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Borrowings and Borrowing Capacity - Additional Information (Details) $ in Thousands			12 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2022 USD ($) bank quarter	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Number of banks containing unsecured federal funds lines of credit | bank			7
Unsecured federal funds line of credit			$ 227,500
Loans pledged as collateral			4,077,484	$ 4,825,359
Subordinated notes			107,800	106,957
Subordinated notes issued			109,500
Write off of deferred debt issuance cost	$ 755
Junior subordinated debentures			$ 41,158	40,602
Maximum
Debt Instrument [Line Items]
Maximum interest deferment period on junior subordinated debentures | quarter			20
Paycheck Protection Program
Debt Instrument [Line Items]
Long-term debt			$ 0	$ 27,144
Stated rate				0.35%
Federal Reserve Bank Discount Window Facility
Debt Instrument [Line Items]
Unused borrowing capacity, amount			510,724
Federal Reserve Bank Discount Window Facility | Asset Pledged as Collateral
Debt Instrument [Line Items]
Loans pledged as collateral			$ 679,897
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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