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Borrowings and Borrowing Capacity - Additional Information (Details) $ in Thousands		9 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) quarter bank	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Total			$ 27,144	$ 191,860
Number of banks containing unsecured federal funds lines of credit | bank			7
Unsecured federal funds line of credit			$ 227,500
Subordinated notes			106,957	87,509
Subordinated notes issued			109,500
Write off of deferred debt issuance cost		$ 755
Junior subordinated debentures			$ 40,602	40,072
Maximum
Debt Instrument [Line Items]
Maximum interest deferment period on junior subordinated debentures | quarter			20
Paycheck Protection Program
Debt Instrument [Line Items]
Total			$ 27,144	$ 191,860
Stated rate			0.35%	0.35%
Federal Reserve Bank Discount Window Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount			$ 501,293
Loans pledged as collateral			$ 727,261
Fixed-to-Floating Rate Subordinated Notes due 2026
Debt Instrument [Line Items]
Subordinated notes issued	$ 50,000
Current Interest Rate	6.50%
Fixed-to-Floating Rate Subordinated Notes due 2026 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Description of floating rate basis	three-month LIBOR
Interest rate	5.345%

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