Borrowings - SBA-guaranteed Debenture, Other Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Debt Instrument [Line Items]
Amortization of financing costs	$ 1,637	$ 1,692
SBA-guaranteed debentures
Debt Instrument [Line Items]
Interest expense	1,998	1,998
Amortization of financing costs	$ 247	$ 247
Weighted average interest rate	2.70%	2.70%
Effective interest rate	3.00%	3.00%
Average debt outstanding	$ 300,000	$ 300,000

Amount of amortization expense attributable to debt issuance costs.

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