Additional increase to allowance for loan and lease losses.

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Commitment required for evaluating individually at management discretion.

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Minimum commitment required for evaluating idividually.

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Percentage of loan portfolio.

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Transition adjustment increase in loan loss reserves.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

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Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Loans and Allowance for Credit Losses - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Jan. 01, 2023	Mar. 31, 2022	Dec. 31, 2021
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans and Leases Receivable, Related Parties, Ending Balance	$ 100,000	$ 200,000
Loans and Leases Receivable, Related Parties, Additions	0	0
Loans and Leases Receivable, Related Parties, Proceeds	0	100,000
Transition adjustment increase in allowance for credit losses			$ 2,100,000
Decrease to retained earnings	84,757,000	85,135,000		$ 87,807,000	$ 90,064,000
Minimum commitment required for evaluating idividually	500,000
Commitment required for evaluating individually at management discretion	500,000
Loans, allowance for credit losses	11,599,000	9,422,000		8,484,000	8,320,000
Retained Earnings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Decrease to retained earnings	104,427,000	104,460,000		$ 99,604,000	$ 98,428,000
Impact of Adopting CECL [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Transition adjustment increase in allowance for credit losses			2,400,000
Decrease to retained earnings	(1,811,000)
Loans, allowance for credit losses	2,123,000		2,100,000
Additional increase to allowance for credit losses	300,000
Impact of Adopting CECL [Member] \| Retained Earnings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Decrease to retained earnings	(1,811,000)		1,800,000
Reserve for Unfunded Commitments [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Transition adjustment increase in allowance for credit losses			300,000
Loans, allowance for credit losses	$ 300,000	$ 0
Reserve for Unfunded Commitments [Member] \| Impact of Adopting CECL [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans, allowance for credit losses			$ 300,000
Real Estate [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Percentage of Loan Portfolio	53.80%	53.00%
Pledged as Collateral [Member] \| FHLB Borrowings [Member]
Debt Securities Heldtomaturity Allowance For Credit Loss [Line Items]
Loans pledged as collateral	$ 112,100,000	$ 100,200,000