SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands |
12 Months Ended | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2025
USD ($)
segment
|
Mar. 31, 2024
USD ($)
|
|||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Money market funds | $ 1,800 | $ 1,900 | ||||||||||||||||||
Cost | 939,066 | [1] | 854,290 | [2] | ||||||||||||||||
Fair Value | $ 979,320 | [1] | 920,504 | [2] | ||||||||||||||||
Number of reportable segments | segment | 1 | |||||||||||||||||||
B+T Group Acquisition, Inc., Edge Adhesives Holdings Inc., And J.R. Hobbs Co | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Cost | $ 90,200 | |||||||||||||||||||
Cost percentage | 13.10% | |||||||||||||||||||
Fair Value | $ 50,900 | |||||||||||||||||||
Fair value percentage | 8.20% | |||||||||||||||||||
Edge Adhesives Holdings, Inc., J.R. Hobbs Co. and The Mountain | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Cost | $ 59,100 | |||||||||||||||||||
Cost percentage | 9.00% | |||||||||||||||||||
Fair Value | $ 29,700 | |||||||||||||||||||
Fair value percentage | 4.80% | |||||||||||||||||||
Non-Control/Non-Affiliate investments | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Investment owned, percent of voting securities | 5.00% | |||||||||||||||||||
Cost | $ 562,371 | [3] | $ 544,799 | [4] | ||||||||||||||||
Fair Value | 648,589 | [3] | 622,233 | [4] | ||||||||||||||||
Affiliate investments | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Cost | 359,286 | [5] | 292,082 | [6] | ||||||||||||||||
Fair Value | $ 330,388 | [5] | 295,366 | [6] | ||||||||||||||||
Affiliate investments | Minimum | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Investment owned, percent of voting securities | 5.00% | |||||||||||||||||||
Affiliate investments | Maximum | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Investment owned, percent of voting securities | 25.00% | |||||||||||||||||||
Control investments | ||||||||||||||||||||
Summary of Investment Holdings [Line Items] | ||||||||||||||||||||
Investment owned, percent of voting securities | 25.00% | |||||||||||||||||||
Cost | $ 17,409 | [7] | 17,409 | [8] | ||||||||||||||||
Fair Value | $ 343 | [7] | $ 2,905 | [8] | ||||||||||||||||
|
X | ||||||||||
- Definition Investment Owned, Percent of Cost Basis No definition available.
|
X | ||||||||||
- Definition Investment Owned, Percent of Fair Value No definition available.
|
X | ||||||||||
- Definition Investment Owned, Percent of Voting Securities No definition available.
|
X | ||||||||||
- Definition Cost of the investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
X | ||||||||||
- Definition Fair value of investment in security owned. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Definition Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. No definition available.
|
X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|