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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Components Of Our Net Assets On A Tax Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
--- | --- | --- | --- | ---
Equity [Abstract] |  |  |  |  |  |  |
Common stock | $ 37 |  | $ 34 |  |  |  |
Capital in excess of par value | 444,706 |  | 401,798 |  |  |  |
Cumulative unrealized appreciation of investments | 64,737 |  | 31,129 |  |  |  |
Cumulative unrealized depreciation of other | 0 |  | 29 |  |  |  |
Undistributed ordinary income | 18,708 |  | 21,380 |  | $ 13,900 |  |
Undistributed capital gain | 1,373 |  | 10,552 |  | 15,700 |  |
Other temporary differences | (36,850) |  | (25,180) |  |  |  |
TOTAL NET ASSETS | $ 492,711 | [1] | $ 439,742 | [1] | $ 445,830 | [1] | $ 382,364
[1] | Refer to Note 9 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(18)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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