Contingent Liabilities and Commitments with Off-Balance Sheet Risk - Summary of Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Commitments [Line Items]
Commitments to extend credit	$ 1,980,338	$ 1,548,482
Unfunded limited partner equity commitment	36,393	21,390
Secured
Other Commitments [Line Items]
Collateral held	13,300	12,400
Secured
Other Commitments [Line Items]
Standby letters of credit and financial guarantees written	12,091	11,167
Unsecured
Other Commitments [Line Items]
Standby letters of credit and financial guarantees written	$ 1,189	$ 1,197