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Investments - Schedule of Investment Interest Income and Fee Income (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Schedule Of Investments [Line Items] |  |  |
Interest Income |  | $ 99,897 | $ 62,252
Fee Income |  | 5,193 | 2,905
Contractual Interest Income |  |  |
Schedule Of Investments [Line Items] |  |  |
Interest Income |  | 82,791 | 49,544
Exit fee interest income |  |  |
Schedule Of Investments [Line Items] |  |  |
Interest Income |  | 9,382 | 6,726
PIK interest income |  |  |
Schedule Of Investments [Line Items] |  |  |
Interest Income |  | 5,528 | 4,975
Other Interest Income |  |  |
Schedule Of Investments [Line Items] |  |  |
Interest Income | [1] | 2,196 | 1,007
Recurring Fee Income |  |  |
Schedule Of Investments [Line Items] |  |  |
Fee Income |  | 2,040 | 1,779
Accelerated Fee Income - Expired Commitments |  |  |
Schedule Of Investments [Line Items] |  |  |
Fee Income |  | 243 | 87
Accelerated Fee Income - Early Repayments |  |  |
Schedule Of Investments [Line Items] |  |  |
Fee Income |  | $ 2,910 | $ 1,039
[1] | Other interest income includes OID interest income and interest recorded on other assets.

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- Definition Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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