DISTRIBUTIONS TO COMMON STOCKHOLDERS - Schedule of Components Of Our Net Assets On A Tax Basis (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
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|---|---|---|---|---|---|---|---|---|---|
| Equity [Abstract] | |||||||||
| Common stock | $ 40 | $ 37 | |||||||
| Capital in excess of par value | 486,717 | 445,512 | |||||||
| Cumulative unrealized appreciation of investments | 254,793 | 38,460 | |||||||
| Cumulative unrealized depreciation of other | (46) | 0 | |||||||
| Undistributed ordinary income | 21,283 | 36,673 | $ 18,700 | ||||||
| Undistributed capital (loss) gain | (17,260) | 18,663 | |||||||
| Other temporary differences | (77,302) | (40,261) | |||||||
| TOTAL NET ASSETS | $ 668,225 | [1] | $ 499,084 | [1] | $ 492,711 | [1] | $ 439,742 | ||
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| X | ||||||||||
- Definition Cumulative Unrealized Appreciation Of Investments No definition available.
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| X | ||||||||||
- Definition Investment Company, Distributable Earnings (Loss), Accumulated Depreciation, Other No definition available.
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| X | ||||||||||
- Definition Investment Company, Distributable Earnings (Loss), Accumulated Other Temporary Differences No definition available.
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| X | ||||||||||
- Definition Investment Company, Distributions Paid Subsequent to Fiscal Year-End, Classified in Prior Year, Ordinary Income No definition available.
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| X | ||||||||||
- Definition Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of accumulated undistributed earnings (deficit) from long-term capital gain (loss) of investment company. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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