Borrowings - SBA-guaranteed Debenture, Other Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Amortization of financing costs			$ 5,082	$ 5,660
SBA-guaranteed debentures
Debt Instrument [Line Items]
Interest expense	$ 2,042	$ 2,042	6,061	6,061
Amortization of financing costs	$ 253	$ 253	$ 750	$ 750
Weighted average interest rate	2.70%	2.70%	2.70%	2.70%
Effective interest rate	3.00%	3.00%	3.00%	3.00%
Average debt outstanding	$ 300,000	$ 300,000	$ 300,000	$ 300,000

Amount of amortization expense attributable to debt issuance costs.

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