Servicing Asset - Unpaid principal balance (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Loans serviced for others		$ 2,833,776
Loan servicing
Servicing Assets at Fair Value [Line Items]
Loans serviced for others	$ 254,545	230,514
Loan servicing \| SBA guaranteed loans
Servicing Assets at Fair Value [Line Items]
Loans serviced for others	$ 254,545	$ 230,514

Amount, before allowance for credit loss, of financing receivable.

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