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Borrowings - General, Narrative (Details) - USD ($) | Mar. 31, 2023 | Mar. 31, 2022 | Jun. 09, 2018 | Jun. 08, 2018 | Nov. 05, 2014
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Debt Disclosure [Abstract] |  |  |  |  |
Minimum asset coverage ratio |  |  | 150.00% | 200.00% | 150.00%
Borrowings allowable per dollar of equity |  |  | $ 2 |  |
Debt to equity ratio, maximum |  |  |  |  | 1.65
Maximum secured debt ratio |  |  |  |  | 0.70
Asset coverage ratio | 177.55% | 181.26% |  |  |

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