CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES (Parenthetical) - USD ($) $ in Thousands |
Sep. 30, 2025 |
Mar. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Investments, cost | $ 1,037,200 | $ 939,066 | [1] | |||||||||||||||
| Line of credit, cost | $ 97,700 | $ 0 | ||||||||||||||||
| Common stock, par value (in USD per share) | $ 0.001 | $ 0.001 | ||||||||||||||||
| Common stock, authorized (in shares) | 100,000,000 | 100,000,000 | ||||||||||||||||
| Common stock, issued (in shares) | 39,591,037 | 36,837,381 | ||||||||||||||||
| Common stock, outstanding (in shares) | 39,591,037 | 36,837,381 | ||||||||||||||||
| Non-Control/Non-Affiliate Investments | ||||||||||||||||||
| Investments, cost | $ 693,893 | [2] | $ 562,371 | [3] | ||||||||||||||
| Affiliate Investments | ||||||||||||||||||
| Investments, cost | 325,898 | [4] | 359,286 | [5] | ||||||||||||||
| Control Investments | ||||||||||||||||||
| Investments, cost | $ 17,409 | [6] | $ 17,409 | [7] | ||||||||||||||
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