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Borrowings - Schedule of Debt Obligations (Parenthetical) (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
4.875% Notes due 2026
Debt Instrument [Line Items]
Deferred financing costs and original issue discount, net	$ 644	$ 1,017
Deferred financing costs, net	200	300
Great Lakes Portman Ridge Funding LLC Revolving Credit Facility
Debt Instrument [Line Items]
Deferred financing costs, net	$ 1,073	$ 1,322

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