Loans and Allowance for Loan Losses - Schedule of Activity in Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Analysis of allowance for loan losses
Beginning balance	$ 16,123	$ 15,352
(Reversal of) provision for loan losses	546	(16)
Charge-offs	(14)	0
Recoveries	17	3
Ending balance	16,672	15,339
Provision (reversal) for loan losses	341	620
Uncollectible Accrued Interest Receivable
Analysis of allowance for loan losses
Provision (reversal) for loan losses	(205)	636
Commercial real estate
Analysis of allowance for loan losses
Beginning balance	8,150	8,505
(Reversal of) provision for loan losses	(1,670)	89
Charge-offs	0	0
Recoveries	0	0
Ending balance	6,480	8,594
SBA loans—real estate
Analysis of allowance for loan losses
Beginning balance	2,022	1,802
(Reversal of) provision for loan losses	(258)	228
Charge-offs	(14)	0
Recoveries	0	0
Ending balance	1,750	2,030
SBA loans—non-real estate
Analysis of allowance for loan losses
Beginning balance	199	278
(Reversal of) provision for loan losses	(47)	14
Charge-offs	0	0
Recoveries	17	0
Ending balance	169	292
Commercial and industrial ("C&I")
Analysis of allowance for loan losses
Beginning balance	2,848	2,563
(Reversal of) provision for loan losses	644	(232)
Charge-offs	0	0
Recoveries	0	0
Ending balance	3,492	2,331
Home mortgage
Analysis of allowance for loan losses
Beginning balance	2,891	2,185
(Reversal of) provision for loan losses	1,877	(110)
Charge-offs	0	0
Recoveries	0	0
Ending balance	4,768	2,075
Consumer
Analysis of allowance for loan losses
Beginning balance	13	19
(Reversal of) provision for loan losses	0	(5)
Charge-offs	0	0
Recoveries	0	3
Ending balance	$ 13	$ 17

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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