Loans and Allowance for Credit Losses - Additional Information (Details) - USD ($)		3 Months Ended		12 Months Ended
	Jan. 01, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Allowance for credit losses	$ 67,300,000
Troubled Debt Restructurings Internal Grading System Substandard		$ 2,800,000		$ 2,900,000
Financing Receivables, Troubled Debt Restructuring		3,700,000		3,900,000
Non-accrual loans for no related allowance amortized cost		3,300,000
TDR loans evaluated on individual	100,000
After-tax effect decreased retained earnings	14,200,000
Troubled Debt Restructurings Returned to Accrual Status		221,000	$ 27,000
Loans and Leases Receivable, Allowance		60,797,000		60,754,000
Impaired Financing Receivable, Related Allowance		218,000		495,000
Provision for Loan and Lease Losses		0	300,000
FDIC-acquired loans and remaining Accretable yield		204,000		$ 429,000
Minimum loan balance with addition to TDR status for classification of loans into Collateral-dependent loans		100,000
Allowance for unfunded commitment
Allowance for credit losses	8,700,000
PCI [Member]
Allowance for credit losses	1,900,000
Adopted ASC 326 [Member]
Loans and Leases Receivable, Allowance	$ 11,600,000
CECL Methodology [Member]
Provision for Loan and Lease Losses			300,000
CECL Methodology [Member] | Allowance for unfunded commitment
Provision for Loan and Lease Losses		$ 193,000	$ 673,000