CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical)

v3.25.2

CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Jun. 30, 2025		Mar. 31, 2025
Schedule of Investments [Line Items]
Investment owned, percent of net assets		213.60%	[1],[2],[3],[4]	196.20%	[5],[6],[7],[8],[9]
Investments owned, fair value		$ 1,036,745		$ 979,320	[8]
Percentage threshold of qualified assets representing total assets in order to acquire non-qualified assets		70.00%		70.00%
Investment, interest rate, paid in cash		4.30%		4.30%
Cumulative net unrealized appreciation				$ 183,300
Cumulative gross unrealized depreciation				144,900
Cumulative gross unrealized appreciation for federal income tax purposes				38,500
Based on a tax cost				940,900
Cost		$ 997,538		939,066	[8]
Pyrotek Special Effects, Inc. And Gladstone Alternative
Schedule of Investments [Line Items]
Percentage of acquired non-qualifying assets of total assets		3.20%
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants
Schedule of Investments [Line Items]
Investments owned, fair value		$ 0	[10],[11],[12]	0	[13],[14],[15]
Cost		$ 0	[10],[11],[12]	$ 0	[13],[14],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 1
Schedule of Investments [Line Items]
Investment, reference rate and spread		2.00%	[1],[2],[3],[4],[10],[11],[16]	2.00%	[5],[6],[7],[9],[13],[15],[17]
Investment interest rate		7.00%	[1],[2],[3],[4],[10],[11],[16]	7.00%	[5],[6],[7],[9],[13],[15],[17]
Line of credit facility, available		$ 0	[1],[2],[3],[4],[10],[11],[16]	$ 0	[5],[6],[7],[9],[13],[15],[17]
Investments owned, fair value		3,080	[10],[11],[16]	3,080	[13],[15],[17]
Principal amount		3,080	[10],[11],[16],[18],[19]	3,080	[13],[15],[17],[20],[21]
Cost		$ 3,080	[10],[11],[16]	$ 3,080	[13],[15],[17]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 2
Schedule of Investments [Line Items]
Investment, reference rate and spread		2.00%	[1],[2],[3],[4],[10],[11],[16]	2.00%	[5],[6],[7],[9],[13],[15],[17]
Investment interest rate		7.00%	[1],[2],[3],[4],[10],[11],[16]	7.00%	[5],[6],[7],[9],[13],[15],[17]
Line of credit facility, available		$ 0	[1],[2],[3],[4],[10],[11],[16]	$ 120	[5],[6],[7],[9],[13],[15],[17]
Investments owned, fair value		1,050	[10],[11],[16]	930	[13],[15],[17]
Principal amount		1,050	[10],[11],[16],[18],[19]	930	[13],[15],[17],[20],[21]
Cost		$ 1,050	[10],[11],[16]	930	[13],[15],[17]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[13],[14],[15]			0
Cost	[13],[14],[15]			$ 4,722
Shares	[13],[14],[15],[20],[21]			14,304
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[13],[15],[17]			2.00%
Investment interest rate	[5],[6],[7],[9],[13],[15],[17]			7.00%
Investments owned, fair value	[13],[15],[17]			$ 3,575
Principal amount	[13],[15],[17],[20],[21]			14,000
Cost	[13],[15],[17]			14,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11],[16]	2.00%
Investment interest rate	[1],[2],[3],[4],[10],[11],[16]	7.00%
Investments owned, fair value	[10],[11],[16]	$ 3,362
Principal amount	[10],[11],[16],[18],[19]	14,000
Cost	[10],[11],[16]	14,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[10],[11],[12]	0
Cost	[10],[11],[12]	$ 4,722
Shares	[10],[11],[12],[18],[19]	14,304
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 45,485	[11],[12]	51,877	[14],[15]
Cost		$ 6,653	[11],[12]	$ 6,653	[14],[15]
Shares		6,653	[11],[12],[18],[19]	6,653	[14],[15],[20],[21]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread		10.00%	[1],[2],[3],[4],[11]	10.00%	[5],[6],[7],[9],[15]
Investment interest rate		14.30%	[1],[2],[3],[4],[11]	14.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 17,700	[11]	$ 17,700	[15]
Principal amount		17,700	[11],[18],[19]	17,700	[15],[20],[21]
Cost		$ 17,700	[11]	$ 17,700	[15]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread		10.00%	[1],[2],[3],[4],[11]	10.00%	[5],[6],[7],[9],[15]
Investment interest rate		14.30%	[1],[2],[3],[4],[11]	14.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 6,850	[11]	$ 6,850	[15]
Principal amount		6,850	[11],[18],[19]	6,850	[15],[20],[21]
Cost		6,850	[11]	6,850	[15]
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]	30,825
Cost	[11],[12]	$ 21,000
Shares	[11],[12],[18],[19]	21,000
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	11.00%
Investment interest rate	[1],[2],[3],[4],[11]	15.30%
Investments owned, fair value	[11]	$ 38,250
Principal amount	[11],[18],[19]	38,250
Cost	[11]	38,250
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]			31,070
Cost	[14],[15]			$ 21,000
Shares	[14],[15],[20],[21]			21,000
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			11.00%
Investment interest rate	[5],[6],[7],[9],[15]			15.30%
Investments owned, fair value	[15]			$ 38,250
Principal amount	[15],[20],[21]			38,250
Cost	[15]			38,250
Investment, Identifier [Axis]: Detroit Defense, Inc. - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[10],[11],[12],[22]	18,169
Cost	[10],[11],[12],[22]	$ 17,388
Shares	[10],[11],[12],[18],[19],[22]	17,388
Investment, Identifier [Axis]: Detroit Defense, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11],[22]	9.00%
Investment interest rate	[1],[2],[3],[4],[10],[11],[22]	13.30%
Investments owned, fair value	[10],[11],[22]	$ 61,305
Principal amount	[10],[11],[18],[19],[22]	61,305
Cost	[10],[11],[22]	61,305
Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants
Schedule of Investments [Line Items]
Investments owned, fair value		0	[11],[12]	0	[14],[15]
Cost		$ 500	[11],[12]	$ 500	[14],[15]
Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		9.00%	[1],[2],[3],[4],[16],[23]	9.00%	[5],[6],[7],[9],[17],[24]
Investment interest rate		13.30%	[1],[2],[3],[4],[16],[23]	13.30%	[5],[6],[7],[9],[17],[24]
Investments owned, fair value		$ 13,000	[16],[23]	$ 12,624	[17],[24]
Principal amount		13,000	[16],[18],[19],[23]	13,000	[17],[20],[21],[24]
Cost		$ 13,000	[16],[23]	13,000	[17],[24]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11],[16]	5.50%
Investment interest rate	[1],[2],[3],[4],[10],[11],[16]	9.80%
Investments owned, fair value	[10],[11],[16]	$ 368
Principal amount	[10],[11],[16],[18],[19]	9,210
Cost	[10],[11],[16]	9,210
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[10],[11],[12]	0
Cost	[10],[11],[12]	$ 8,199
Shares	[10],[11],[12],[18],[19]	8,199
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[13],[14],[15]			0
Cost	[13],[14],[15]			$ 8,199
Shares	[13],[14],[15],[20],[21]			8,199
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[13],[15],[17]			5.50%
Investment interest rate	[5],[6],[7],[9],[13],[15],[17]			9.80%
Investments owned, fair value	[13],[15],[17]			$ 343
Principal amount	[13],[15],[17],[20],[21]			9,210
Cost	[13],[15],[17]			9,210
Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 18,197	[11],[12]	21,501	[14],[15]
Cost		$ 8,560	[11],[12]	$ 8,560	[14],[15]
Shares		8,560	[11],[12],[18],[19]	8,560	[14],[15],[20],[21]
Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		10.50%	[1],[2],[3],[4],[11]	10.50%	[5],[6],[7],[9],[15]
Investment interest rate		14.80%	[1],[2],[3],[4],[11]	14.80%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 30,000	[11]	$ 30,000	[15]
Principal amount		30,000	[11],[18],[19]	30,000	[15],[20],[21]
Cost		30,000	[11]	30,000	[15]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value		0	[11],[12]	3,480	[14],[15]
Cost		$ 11,513	[11],[12]	$ 11,513	[14],[15]
Shares		16,957	[11],[12],[18],[19]	16,957	[14],[15],[20],[21]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread		4.10%	[1],[2],[3],[4],[11]	4.10%	[5],[6],[7],[9],[15]
Investment interest rate		8.40%	[1],[2],[3],[4],[11]	8.40%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 6,900	[11]	$ 6,900	[15]
Principal amount		6,900	[11],[18],[19]	6,900	[15],[20],[21]
Cost		$ 6,900	[11]	$ 6,900	[15]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread		7.00%	[1],[2],[3],[4],[11]	7.00%	[5],[6],[7],[9],[15]
Investment interest rate		11.30%	[1],[2],[3],[4],[11]	11.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 18,796	[11]	$ 18,796	[15]
Principal amount		18,796	[11],[18],[19]	18,796	[15],[20],[21]
Cost		18,796	[11]	18,796	[15]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value		0	[11],[12]	0	[14],[15]
Cost		$ 8	[11],[12]	$ 8	[14],[15]
Shares		63,747	[11],[12],[18],[19]	63,747	[14],[15],[20],[21]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 5,602	[11],[12]	$ 9,070	[14],[15]
Cost		$ 9,583	[11],[12]	$ 9,583	[14],[15]
Shares		19,280	[11],[12],[18],[19]	19,280	[14],[15],[20],[21]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	10.00%
Investment interest rate	[1],[2],[3],[4],[11]	14.30%
Investments owned, fair value	[11]	$ 12,200
Principal amount	[11],[18],[19]	12,200
Cost	[11]	12,200
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			10.00%
Investment interest rate	[5],[6],[7],[9],[15]			14.30%
Investments owned, fair value	[15]			$ 12,200
Principal amount	[15],[20],[21]			12,200
Cost	[15]			12,200
Investment, Identifier [Axis]: Gladstone Alternative Income Fund – Common Equity
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[25]			4,975
Cost	[14],[25]			$ 5,000
Shares	[14],[20],[21],[25]			500,000
Investment, Identifier [Axis]: Gladstone Alternative Income Fund. – Common Equity
Schedule of Investments [Line Items]
Investments owned, fair value	[12],[26]	5,010
Cost	[12],[26]	$ 5,000
Shares	[12],[18],[19],[26]	500,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	6.00%
Investment interest rate	[1],[2],[3],[4],[11]	10.30%
Line of credit facility, available	[1],[2],[3],[4],[11]	$ 0
Investments owned, fair value	[11]	2,000
Principal amount	[11],[18],[19]	2,000
Cost	[11]	$ 2,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	9.00%
Investment interest rate	[1],[2],[3],[4],[11]	13.30%
Investments owned, fair value	[11]	$ 10,611
Principal amount	[11],[18],[19]	12,000
Cost	[11]	$ 12,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			6.00%
Investment interest rate	[5],[6],[7],[9],[15]			10.30%
Line of credit facility, available	[5],[6],[7],[9],[15]			$ 0
Investments owned, fair value	[15]			2,000
Principal amount	[15],[20],[21]			2,000
Cost	[15]			$ 2,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit Two
Schedule of Investments [Line Items]
Investment, reference rate and spread		6.00%	[1],[2],[3],[4],[11]	6.00%	[5],[6],[7],[9],[15]
Investment interest rate		10.30%	[1],[2],[3],[4],[11]	10.30%	[5],[6],[7],[9],[15]
Line of credit facility, available		$ 400	[1],[2],[3],[4],[11]	$ 0	[5],[6],[7],[9],[15]
Investments owned, fair value		0	[11]	400	[15]
Principal amount		0	[11],[18],[19]	400	[15],[20],[21]
Cost		0	[11]	400	[15]
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]			0
Cost	[14],[15]			$ 3,275
Shares	[14],[15],[20],[21]			3,275
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			9.00%
Investment interest rate	[5],[6],[7],[9],[15]			13.30%
Investments owned, fair value	[15]			$ 9,281
Principal amount	[15],[20],[21]			12,000
Cost	[15]			12,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc.- Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]	0
Cost	[11],[12]	$ 3,275
Shares	[11],[12],[18],[19]	3,275
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 0	[11],[12]	0	[14],[15]
Cost		$ 0	[11],[12]	$ 0	[14],[15]
Shares		10,080	[11],[12],[18],[19]	10,080	[14],[15],[20],[21]
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		0.50%	[1],[2],[3],[4],[11]	0.50%	[5],[6],[7],[9],[15]
Investment interest rate		6.00%	[1],[2],[3],[4],[11]	6.00%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 30,734	[11]	$ 29,634	[15]
Principal amount		57,700	[11],[18],[19]	57,700	[15],[20],[21]
Cost		57,700	[11]	57,700	[15]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		18,187	[11],[12]	12,921	[14],[15]
Cost		$ 6,749	[11],[12]	$ 6,749	[14],[15]
Shares		67,490	[11],[12],[18],[19]	67,490	[14],[15],[20],[21]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		11.00%	[1],[2],[3],[4],[11]	11.00%	[5],[6],[7],[9],[15]
Investment interest rate		15.30%	[1],[2],[3],[4],[11]	15.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 22,000	[11]	$ 22,000	[15]
Principal amount		22,000	[11],[18],[19]	22,000	[15],[20],[21]
Cost		$ 22,000	[11]	$ 22,000	[15]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15],[17]			6.00%
Investment interest rate	[5],[6],[7],[9],[15],[17]			10.30%
Line of credit facility, available	[5],[6],[7],[9],[15],[17]			$ 0
Investments owned, fair value	[15],[17]			3,036
Principal amount	[15],[17],[20],[21]			5,000
Cost	[15],[17]			$ 5,000
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread		6.00%	[1],[2],[3],[4],[11],[16]	6.00%	[5],[6],[7],[9],[15],[17]
Investment interest rate		10.30%	[1],[2],[3],[4],[11],[16]	10.30%	[5],[6],[7],[9],[15],[17]
Investments owned, fair value		$ 10,188	[11],[16]	$ 10,019	[15],[17]
Principal amount		16,500	[11],[16],[18],[19]	16,500	[15],[17],[20],[21]
Cost		$ 16,500	[11],[16]	$ 16,500	[15],[17]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15],[17]			10.30%
Investment interest rate	[5],[6],[7],[9],[15],[17]			14.60%
Investments owned, fair value	[15],[17]			$ 15,788
Principal amount	[15],[17],[20],[21]			26,000
Cost	[15],[17]			$ 26,000
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15],[17]			6.00%
Investment interest rate	[5],[6],[7],[9],[15],[17]			10.30%
Investments owned, fair value	[15],[17]			$ 1,480
Principal amount	[15],[17],[20],[21]			2,438
Cost	[15],[17]			2,438
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[16]	6.00%
Investment interest rate	[1],[2],[3],[4],[11],[16]	10.30%
Line of credit facility, available	[1],[2],[3],[4],[11],[16]	$ 0
Investments owned, fair value	[11],[16]	3,087
Principal amount	[11],[16],[18],[19]	5,000
Cost	[11],[16]	$ 5,000
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[16]	10.30%
Investment interest rate	[1],[2],[3],[4],[11],[16]	14.60%
Investments owned, fair value	[11],[16]	$ 16,054
Principal amount	[11],[16],[18],[19]	26,000
Cost	[11],[16]	$ 26,000
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 3
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11],[16]	6.00%
Investment interest rate	[1],[2],[3],[4],[11],[16]	10.30%
Investments owned, fair value	[11],[16]	$ 1,505
Principal amount	[11],[16],[18],[19]	2,438
Cost	[11],[16]	2,438
Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		0	[11],[12]	0	[14],[15]
Cost		$ 10,920	[11],[12]	$ 10,920	[14],[15]
Shares		10,920	[11],[12],[18],[19]	10,920	[14],[15],[20],[21]
Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 15,779	[11],[12]	$ 13,262	[14],[15]
Cost		$ 11,206	[11],[12]	$ 11,206	[14],[15]
Shares		11,206	[11],[12],[18],[19]	11,206	[14],[15],[20],[21]
Investment, Identifier [Axis]: Mason West, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		10.00%	[1],[2],[3],[4],[11]	10.00%	[5],[6],[7],[9],[15]
Investment interest rate		14.30%	[1],[2],[3],[4],[11]	14.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 25,250	[11]	$ 25,250	[15]
Principal amount		25,250	[11],[18],[19]	25,250	[15],[20],[21]
Cost		$ 25,250	[11]	$ 25,250	[15]
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11]	8.50%
Investment interest rate	[1],[2],[3],[4],[10],[11]	13.50%
Investments owned, fair value	[10],[11]	$ 48,082
Principal amount	[10],[11],[18],[19]	48,082
Cost	[10],[11]	48,082
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[13],[15]			5.00%
Investment interest rate	[5],[6],[7],[9],[13],[15]			10.00%
Line of credit facility, available	[5],[6],[7],[9],[13],[15]			$ 2,820
Investments owned, fair value	[13],[15]			1,070
Principal amount	[13],[15],[20],[21]			1,070
Cost	[13],[15]			$ 1,070
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. TL - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[13],[15]			8.50%
Investment interest rate	[5],[6],[7],[9],[13],[15]			13.50%
Investments owned, fair value	[13],[15]			$ 48,082
Principal amount	[13],[15],[20],[21]			48,082
Cost	[13],[15]			48,082
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		23,252	[10],[11],[12]	22,421	[13],[14],[15]
Cost		$ 22,169	[10],[11],[12]	$ 22,169	[13],[14],[15]
Shares		22,169	[10],[11],[12],[18],[19]	22,169	[13],[14],[15],[20],[21]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Term Loan
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			9.50%
Investment interest rate	[5],[6],[7],[9],[15]			13.80%
Investments owned, fair value	[15]			$ 38,000
Principal amount	[15],[20],[21]			38,000
Cost	[15]			38,000
Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 24,912	[11],[12]	23,539	[14],[15]
Cost		$ 0	[11],[12]	$ 0	[14],[15]
Shares		6,180	[11],[12],[18],[19]	6,180	[14],[15],[20],[21]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	9.50%
Investment interest rate	[1],[2],[3],[4],[11]	13.80%
Investments owned, fair value	[11]	$ 38,000
Principal amount	[11],[18],[19]	38,000
Cost	[11]	38,000
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		5,477	[11],[12]	$ 996	[14],[15]
Cost		$ 46,746	[11],[12]	$ 36,130	[14],[15]
Shares		428,773	[11],[12],[18],[19]	322,598	[14],[15],[20],[21]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			1.00%
Investment interest rate	[5],[6],[7],[9],[15]			7.00%
Investments owned, fair value	[15]			$ 10,616
Principal amount	[15],[20],[21]			10,616
Cost	[15]			$ 10,616
Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread		1.40%	[1],[2],[3],[4],[11]	1.40%	[5],[6],[7],[9],[15]
Investment interest rate		5.70%	[1],[2],[3],[4],[11]	5.70%	[5],[6],[7],[9],[15]
Line of credit facility, available		$ 0	[1],[2],[3],[4],[11]	$ 0	[5],[6],[7],[9],[15]
Unused fee percentage		0.30%	[1],[2],[3],[4],[11]	0.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 2,950	[11]	$ 2,950	[15]
Principal amount		2,950	[11],[18],[19]	2,950	[15],[20],[21]
Cost		2,950	[11]	2,950	[15]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value		0	[11],[12]	0	[14],[15]
Cost		$ 1,830	[11],[12]	$ 1,830	[14],[15]
Shares		4,221	[11],[12],[18],[19]	4,221	[14],[15],[20],[21]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		3.40%	[1],[2],[3],[4],[11]	3.40%	[5],[6],[7],[9],[15]
Investment interest rate		7.70%	[1],[2],[3],[4],[11]	7.70%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 1,600	[11]	$ 3,200	[15]
Principal amount		3,200	[11],[18],[19]	3,200	[15],[20],[21]
Cost		$ 3,200	[11]	$ 3,200	[15]
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. - Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15],[27]			5.00%
Investment interest rate	[5],[6],[7],[9],[15],[27]			10.00%
Line of credit facility, available	[5],[6],[7],[9],[15],[27]			$ 500
Investments owned, fair value	[15],[27]			2,500
Principal amount	[15],[20],[21],[27]			2,500
Cost	[15],[27]			$ 2,500
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		8.00%	[1],[2],[3],[4],[11],[28]	8.00%	[5],[6],[7],[9],[15],[27]
Investment interest rate		13.00%	[1],[2],[3],[4],[11],[28]	13.00%	[5],[6],[7],[9],[15],[27]
Investments owned, fair value		$ 20,120	[11],[28]	$ 20,120	[15],[27]
Principal amount		20,120	[11],[18],[19],[28]	20,120	[15],[20],[21],[27]
Cost		20,120	[11],[28]	20,120	[15],[27]
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc.. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		7,907	[11],[12],[28]	7,260	[14],[15],[27]
Cost		$ 7,060	[11],[12],[28]	$ 7,060	[14],[15],[27]
Shares		7,060	[11],[12],[18],[19],[28]	7,060	[14],[15],[20],[21],[27]
Investment, Identifier [Axis]: Ricardo Defense, Inc. - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[13],[14],[15]			$ 17,388
Cost	[13],[14],[15]			$ 17,388
Shares	[13],[14],[15],[20],[21]			17,388
Investment, Identifier [Axis]: Ricardo Defense, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[13],[15]			9.00%
Investment interest rate	[5],[6],[7],[9],[13],[15]			13.30%
Investments owned, fair value	[13],[15]			$ 61,305
Principal amount	[13],[15],[20],[21]			61,305
Cost	[13],[15]			61,305
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock
Schedule of Investments [Line Items]
Investments owned, fair value		$ 55,341	[11],[12]	50,788	[14],[15]
Cost		$ 30,746	[11],[12]	$ 30,746	[14],[15]
Shares		18,721	[11],[12],[18],[19]	18,721	[14],[15],[20],[21]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			7.00%
Investment interest rate	[5],[6],[7],[9],[15]			12.50%
Investments owned, fair value	[15]			$ 54,644
Principal amount	[15],[20],[21]			54,644
Cost	[15]			54,644
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 1
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	7.00%
Investment interest rate	[1],[2],[3],[4],[11]	12.50%
Investments owned, fair value	[11]	$ 54,644
Principal amount	[11],[18],[19]	54,644
Cost	[11]	54,644
Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		23,580	[11],[12]	20,599	[14],[15]
Cost		$ 4,000	[11],[12]	$ 4,000	[14],[15]
Shares		4,000	[11],[12],[18],[19]	4,000	[14],[15],[20],[21]
Investment, Identifier [Axis]: Schylling, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		11.00%	[1],[2],[3],[4],[11]	11.00%	[5],[6],[7],[9],[15]
Investment interest rate		15.30%	[1],[2],[3],[4],[11]	15.30%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 27,981	[11]	$ 27,981	[15]
Principal amount		27,981	[11],[18],[19]	27,981	[15],[20],[21]
Cost		27,981	[11]	27,981	[15]
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC - Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[10],[11],[12]	13,843
Cost	[10],[11],[12]	$ 13,843
Shares	[10],[11],[12],[18],[19]	13,843
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11]	5.50%
Investment interest rate	[1],[2],[3],[4],[10],[11]	10.00%
Line of credit facility, available	[1],[2],[3],[4],[10],[11]	$ 1,436
Investments owned, fair value	[10],[11]	0
Principal amount	[10],[11],[18],[19]	0
Cost	[10],[11]	$ 0
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[10],[11]	9.00%
Investment interest rate	[1],[2],[3],[4],[10],[11]	13.50%
Investments owned, fair value	[10],[11]	$ 35,660
Principal amount	[10],[11],[18],[19]	35,660
Cost	[10],[11]	$ 35,660
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Line of Credit
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	5.00%
Investment interest rate	[1],[2],[3],[4],[11]	10.00%
Line of credit facility, available	[1],[2],[3],[4],[11]	$ 1,760
Investments owned, fair value	[11]	240
Principal amount	[11],[18],[19]	240
Cost	[11]	240
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]	3,059
Cost	[11],[12]	$ 3,059
Shares	[11],[12],[18],[19]	3,059
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	9.00%
Investment interest rate	[1],[2],[3],[4],[11]	13.50%
Investments owned, fair value	[11]	$ 9,520
Principal amount	[11],[18],[19]	9,520
Cost	[11]	9,520
Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		38,536	[11],[12]	35,839	[14],[15]
Cost		$ 11,233	[11],[12]	$ 11,233	[14],[15]
Shares		11,233	[11],[12],[18],[19]	11,233	[14],[15],[20],[21]
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread		9.00%	[1],[2],[3],[4],[11]	9.00%	[5],[6],[7],[9],[15]
Investment interest rate		13.50%	[1],[2],[3],[4],[11]	13.50%	[5],[6],[7],[9],[15]
Investments owned, fair value		$ 33,750	[11]	$ 33,750	[15]
Principal amount		33,750	[11],[18],[19]	33,750	[15],[20],[21]
Cost		33,750	[11]	33,750	[15]
Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value		4,682	[11],[12]	8,410	[14],[15]
Cost		$ 6,640	[11],[12]	$ 6,640	[14],[15]
Shares		6,640	[11],[12],[18],[19]	6,640	[14],[15],[20],[21]
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			10.50%
Investment interest rate	[5],[6],[7],[9],[15]			14.80%
Investments owned, fair value	[15]			$ 28,560
Principal amount	[15],[20],[21]			28,560
Cost	[15]			$ 28,560
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	10.50%
Investment interest rate	[1],[2],[3],[4],[11]	14.80%
Investments owned, fair value	[11]	$ 28,560
Principal amount	[11],[18],[19]	28,560
Cost	[11]	28,560
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[11],[12]	28,505
Cost	[11],[12]	$ 6,000
Shares	[11],[12],[18],[19]	6,000
Investment, Identifier [Axis]: UPB Acquisition, Inc. - Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[5],[6],[7],[9],[15]			10.00%
Investment interest rate	[5],[6],[7],[9],[15]			14.30%
Investments owned, fair value	[15]			$ 15,000
Principal amount	[15],[20],[21]			15,000
Cost	[15]			15,000
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Preferred Stock
Schedule of Investments [Line Items]
Investments owned, fair value	[14],[15]			26,010
Cost	[14],[15]			$ 6,000
Shares	[14],[15],[20],[21]			6,000
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Term Debt
Schedule of Investments [Line Items]
Investment, reference rate and spread	[1],[2],[3],[4],[11]	10.00%
Investment interest rate	[1],[2],[3],[4],[11]	14.30%
Investments owned, fair value	[11]	$ 15,000
Principal amount	[11],[18],[19]	15,000
Cost	[11]	15,000
Collateral Pledged
Schedule of Investments [Line Items]
Investments owned, fair value		827,100		$ 764,700
Aerospace and Defense
Schedule of Investments [Line Items]
Investments owned, fair value		105,170		107,869
Buildings and Real Estate
Schedule of Investments [Line Items]
Investments owned, fair value		69,075		69,320
Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investments owned, fair value		54,980		11,612
Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investments owned, fair value		188,845		170,360
Healthcare, Education, and Childcare
Schedule of Investments [Line Items]
Investments owned, fair value		48,197		51,501
Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investments owned, fair value		150,749		159,236
Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investments owned, fair value		79,588		78,460
Oil and Gas
Schedule of Investments [Line Items]
Investments owned, fair value		72,286		69,589
Printing and Publishing
Schedule of Investments [Line Items]
Investments owned, fair value		12,611		11,681
Cargo Transport
Schedule of Investments [Line Items]
Investments owned, fair value		13,000		12,624
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investments owned, fair value		109,985		105,432
Electronics
Schedule of Investments [Line Items]
Investments owned, fair value		71,334		71,573
Mining, Steel, Iron and Non-Precious Metals
Schedule of Investments [Line Items]
Investments owned, fair value		43,505		41,010
Secured First Lien Debt
Schedule of Investments [Line Items]
Investments owned, fair value		557,057		514,334
Cost		625,596		584,026
Secured Second Lien Debt
Schedule of Investments [Line Items]
Investments owned, fair value		93,340		103,580
Cost		93,340		103,956
Preferred Equity
Schedule of Investments [Line Items]
Investments owned, fair value		325,997		302,163
Cost		229,005		201,487
Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investments owned, fair value		60,351		59,243
Cost		$ 49,597		$ 49,597
Non-Control/Non-Affiliate Investments
Schedule of Investments [Line Items]
Investment owned, percent of net assets		146.00%	[1],[2],[3],[4],[29]	130.00%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 708,357	[29]	$ 648,589	[30]
Cost		$ 624,293	[29]	$ 562,371	[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets		71.40%	[1],[2],[3],[4],[29]	60.30%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 346,601	[29]	$ 300,751	[30]
Cost		$ 376,556	[29]	$ 331,536	[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Aerospace and Defense
Schedule of Investments [Line Items]
Investment owned, percent of net assets		12.60%	[1],[2],[3],[4],[29]	12.30%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Buildings and Real Estate
Schedule of Investments [Line Items]
Investment owned, percent of net assets		7.90%	[1],[2],[3],[4],[29]	7.70%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[29]	7.30%
Investments owned, fair value	[29]	$ 35,660
Cost	[29]	$ 35,660
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.90%	[1],[2],[3],[4],[29]	1.20%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 4,550	[29]	$ 6,150	[30]
Cost		$ 6,150	[29]	$ 6,150	[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets		13.50%	[1],[2],[3],[4],[29]	11.00%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 65,744	[29]	$ 54,884	[30]
Cost		$ 92,710	[29]	$ 82,950	[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Healthcare, Education, and Childcare
Schedule of Investments [Line Items]
Investment owned, percent of net assets		6.20%	[1],[2],[3],[4],[29]	6.00%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets		7.60%	[1],[2],[3],[4],[29]	7.40%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 36,750	[29]	$ 36,750	[30]
Cost		$ 36,750	[29]	$ 36,750	[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets		5.80%	[1],[2],[3],[4],[29]	5.60%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Oil and Gas
Schedule of Investments [Line Items]
Investment owned, percent of net assets		7.00%	[1],[2],[3],[4],[29]	6.80%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Printing and Publishing
Schedule of Investments [Line Items]
Investment owned, percent of net assets		2.60%	[1],[2],[3],[4],[29]	2.30%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 12,611	[29]	$ 11,681	[30]
Cost		$ 14,000	[29]	$ 14,400	[30]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets		19.30%	[1],[2],[3],[4],[29]	18.60%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 93,340	[29]	$ 92,964	[30]
Cost		$ 93,340	[29]	$ 93,340	[30]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Aerospace and Defense
Schedule of Investments [Line Items]
Investment owned, percent of net assets		5.30%	[1],[2],[3],[4],[29]	5.20%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 25,696	[29]	$ 25,696	[30]
Cost		$ 25,696	[29]	$ 25,696	[30]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Cargo Transport
Schedule of Investments [Line Items]
Investment owned, percent of net assets		2.70%	[1],[2],[3],[4],[29]	2.50%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investment owned, percent of net assets		11.30%	[1],[2],[3],[4],[29]	10.90%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Preferred Equity
Schedule of Investments [Line Items]
Investment owned, percent of net assets		43.90%	[1],[2],[3],[4],[29]	40.20%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 213,075	[29]	$ 200,606	[30]
Cost		$ 109,800	[29]	$ 92,898	[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Aerospace and Defense
Schedule of Investments [Line Items]
Investment owned, percent of net assets		3.70%	[1],[2],[3],[4],[29]	3.50%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Buildings and Real Estate
Schedule of Investments [Line Items]
Investment owned, percent of net assets		6.40%	[1],[2],[3],[4],[29]	6.20%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[1],[2],[3],[4],[29]	2.90%
Non-Control/Non-Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets		3.90%	[1],[2],[3],[4],[29]	2.70%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 18,838	[29]	$ 13,262	[30]
Cost		$ 14,265	[29]	$ 11,206	[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Healthcare, Education, and Childcare
Schedule of Investments [Line Items]
Investment owned, percent of net assets		3.70%	[1],[2],[3],[4],[29]	4.30%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets		10.50%	[1],[2],[3],[4],[29]	12.20%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 51,087	[29]	$ 60,947	[30]
Cost		$ 16,236	[29]	$ 16,236	[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets		4.90%	[1],[2],[3],[4],[29]	4.10%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Oil and Gas
Schedule of Investments [Line Items]
Investment owned, percent of net assets		7.90%	[1],[2],[3],[4],[29]	7.20%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Preferred Equity | Printing and Publishing
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[29]	0.00%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investment owned, percent of net assets		11.40%	[1],[2],[3],[4],[29]	10.90%	[5],[6],[7],[9],[30]
Investments owned, fair value		$ 55,341	[29]	$ 54,268	[30]
Cost		$ 44,597	[29]	$ 44,597	[30]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Aerospace and Defense
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[29]	0.70%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[29]	0.00%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[29]	0.00%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Cargo Transport
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[29]	0.00%	[5],[6],[7],[9],[30]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)
Schedule of Investments [Line Items]
Investment owned, percent of net assets		11.40%	[1],[2],[3],[4],[29]	10.20%	[5],[6],[7],[9],[30]
Affiliate Investments
Schedule of Investments [Line Items]
Investment owned, percent of net assets		67.50%	[1],[2],[3],[4],[31]	66.10%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 328,020	[31]	$ 330,388	[32]
Cost		$ 355,836	[31]	$ 359,286	[32]
Affiliate Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets		43.30%	[1],[2],[3],[4],[31]	42.70%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 210,088	[31]	$ 213,240	[32]
Cost		$ 239,830	[31]	$ 243,280	[32]
Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets		16.80%	[1],[2],[3],[4],[31]	16.20%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 81,394	[31]	$ 80,883	[32]
Cost		$ 100,498	[31]	$ 100,498	[32]
Affiliate Investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets		7.80%	[1],[2],[3],[4],[31]	7.60%	[5],[6],[7],[9],[32]
Affiliate Investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets		4.20%	[1],[2],[3],[4],[31]	4.50%	[5],[6],[7],[9],[32]
Investments owned, fair value	[32]			$ 22,620
Cost	[32]			$ 22,620
Affiliate Investments | Secured First Lien Debt | Electronics
Schedule of Investments [Line Items]
Investment owned, percent of net assets		9.90%	[1],[2],[3],[4],[31]	9.90%	[5],[6],[7],[9],[32]
Investments owned, fair value	[32]			$ 49,152
Cost	[32]			$ 49,152
Affiliate Investments | Secured First Lien Debt | Mining, Steel, Iron and Non-Precious Metals
Schedule of Investments [Line Items]
Investment owned, percent of net assets		3.10%	[1],[2],[3],[4],[31]	3.00%	[5],[6],[7],[9],[32]
Affiliate Investments | Secured First Lien Debt | Telecommunications
Schedule of Investments [Line Items]
Investment owned, percent of net assets		1.50%	[1],[2],[3],[4],[31]	1.50%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 7,492	[31]	$ 7,585	[32]
Cost		$ 18,130	[31]	$ 18,010	[32]
Affiliate Investments | Secured Second Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[9],[32]			2.10%
Investments owned, fair value	[32]			$ 10,616
Cost	[32]			$ 10,616
Affiliate Investments | Secured Second Lien Debt | Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[9],[32]			2.10%
Affiliate Investments | Preferred Equity
Schedule of Investments [Line Items]
Investment owned, percent of net assets		23.20%	[1],[2],[3],[4],[31]	20.30%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 112,922	[31]	$ 101,557	[32]
Cost		$ 111,006	[31]	$ 100,390	[32]
Affiliate Investments | Preferred Equity | Chemicals, Plastics, and Rubber
Schedule of Investments [Line Items]
Investment owned, percent of net assets		1.10%	[1],[2],[3],[4],[31]	0.20%	[5],[6],[7],[9],[32]
Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services
Schedule of Investments [Line Items]
Investment owned, percent of net assets		4.70%	[1],[2],[3],[4],[31]	4.30%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 22,869	[31]	$ 21,331	[32]
Cost		$ 24,309	[31]	$ 24,309	[32]
Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products
Schedule of Investments [Line Items]
Investment owned, percent of net assets		5.10%	[1],[2],[3],[4],[31]	4.70%	[5],[6],[7],[9],[32]
Affiliate Investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment
Schedule of Investments [Line Items]
Investment owned, percent of net assets		1.60%	[1],[2],[3],[4],[31]	1.40%	[5],[6],[7],[9],[32]
Affiliate Investments | Preferred Equity | Electronics
Schedule of Investments [Line Items]
Investment owned, percent of net assets		4.80%	[1],[2],[3],[4],[31]	4.50%	[5],[6],[7],[9],[32]
Affiliate Investments | Preferred Equity | Mining, Steel, Iron and Non-Precious Metals
Schedule of Investments [Line Items]
Investment owned, percent of net assets		5.90%	[1],[2],[3],[4],[31]	5.20%	[5],[6],[7],[9],[32]
Affiliate Investments | Preferred Equity | Telecommunications
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[31]	0.00%	[5],[6],[7],[9],[32]
Affiliate Investments | Common Equity/ Equivalents
Schedule of Investments [Line Items]
Investment owned, percent of net assets		1.00%	[1],[2],[3],[4],[31]	1.00%	[5],[6],[7],[9],[32]
Investments owned, fair value		$ 5,010	[31]	$ 4,975	[32]
Cost		$ 5,000	[31]	$ 5,000	[32]
Affiliate Investments | Common Equity/ Equivalents | Telecommunications
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[31]	0.00%	[5],[6],[7],[9],[32]
Affiliate Investments | Common Equity/ Equivalents | Finance
Schedule of Investments [Line Items]
Investment owned, percent of net assets		1.00%	[1],[2],[3],[4],[31]	1.00%	[5],[6],[7],[9],[32]
Control Investments
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.10%	[1],[2],[3],[4],[33]	0.10%	[5],[6],[7],[9],[34]
Investments owned, fair value		$ 368	[33]	$ 343	[34]
Cost		$ 17,409	[33]	$ 17,409	[34]
Control Investments | Secured First Lien Debt
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.10%	[1],[2],[3],[4],[33]	0.10%	[5],[6],[7],[9],[34]
Investments owned, fair value		$ 368	[33]	$ 343	[34]
Cost		$ 9,210	[33]	$ 9,210	[34]
Control Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.10%	[1],[2],[3],[4],[33]	0.10%	[5],[6],[7],[9],[34]
Control Investments | Preferred Equity
Schedule of Investments [Line Items]
Investment owned, percent of net assets	[5],[6],[7],[9],[34]			0.00%
Investments owned, fair value		$ 0	[33]	$ 0	[34]
Cost		$ 8,199	[33]	$ 8,199	[34]
Control Investments | Preferred Equity | Diversified/Conglomerate Manufacturing
Schedule of Investments [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[4],[33]	0.00%	[5],[6],[7],[9],[34]
[1] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of June 30, 2025. [2] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $827.1 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the Investment Company Act of 1940, as amended (the "1940 Act"), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of June 30, 2025, our investments in Pyrotek Special Effects, Inc. and Gladstone Alternative Income Fund ("Gladstone Alternative") are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 3.2% of total investments, at fair value, as of June 30, 2025. [3] Unless indicated otherwise, all cash interest rates are indexed to 30-day Secured Overnight Financing Rate ("SOFR"), which was 4.3% as of June 30, 2025. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or the reference rate plus a spread. Due dates represent the contractual maturity date. [4] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, "Fair Value Measurements and Disclosures" ("ASC 820") fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [5] Unless indicated otherwise, all cash interest rates are indexed to 30-day SOFR, which was 4.3% as of March 31, 2025. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or reference rate plus a spread. Due dates represent the contractual maturity date. [6] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2025. [7] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $764.7 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the 1940 Act, we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. [8] Cumulative gross unrealized appreciation for federal income tax purposes is $183.3 million; cumulative gross unrealized depreciation for federal income tax purposes is $144.9 million. Cumulative net unrealized appreciation is $38.5 million, based on a tax cost of $940.9 million. [9] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the FASB ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [10] (K)One or more of our affiliated funds, Gladstone Capital Corporation and Gladstone Alternative, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission. [11] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [12] Security is non-income producing [13] One or more of our affiliated funds, Gladstone Capital Corporation and Gladstone Alternative Income Fund, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission. [14] Security is non-income producing. [15] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [16] Debt security is on non-accrual status. [17] Debt security is on non-accrual status. [18] Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable. [19] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase. [20] Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable. [21] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase. [22] The portfolio company changed its name from Ricardo Defense, Inc. to Detroit Defense, Inc. [23] Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [24] Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [25] Fair value was based on net asset value provided by the underlying fund as a practical expedient.. [26] Fair value was based on net asset value provided by the underlying fund as a practical expedient. [27] This portfolio company is headquartered in Ontario, Canada. [28] This portfolio company is headquartered in Ontario, Canada. [29] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities. [30] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities. [31] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities. [32] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities. [33] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities. [34] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.