Allowance for Loan Losses - Allowance for loan losses activity (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	$ 20,032	$ 17,017
Charge-offs	(1)	(1)
Provision		2,365
Ending Balance	20,031	19,381
Collectively evaluated for impairment	20,031	19,381
Ending Balance	1,628,480	1,606,945
Individually evaluated for impairment	542	589
Collectively evaluated for impairment	1,627,938	1,606,356
Unallocated
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	632	350
Provision	(205)	235
Ending Balance	427	585
Collectively evaluated for impairment	427	585
Ending Balance
Collectively evaluated for impairment
Real Estate Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance		10,602
Provision		1,643
Ending Balance		12,245
Collectively evaluated for impairment		12,245
Ending Balance		895,547
Individually evaluated for impairment		141
Collectively evaluated for impairment		895,406
Real Estate Loans \| Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	2,769	2,430
Provision	(12)	(20)
Ending Balance	2,757	2,410
Collectively evaluated for impairment	2,757	2,410
Ending Balance	356,331	281,964
Individually evaluated for impairment	542	448
Collectively evaluated for impairment	355,789	281,516
Real Estate Loans \| Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	13,091
Charge-offs	(1)
Provision	(694)
Ending Balance	12,396
Collectively evaluated for impairment	12,396
Ending Balance	992,126
Collectively evaluated for impairment	992,126
Real Estate Loans \| Construction and land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	2,824	2,617
Provision	922	780
Ending Balance	3,746	3,397
Collectively evaluated for impairment	3,746	3,397
Ending Balance	219,160	250,208
Collectively evaluated for impairment	219,160	250,208
Commercial - Non-Real Estate \| Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	711	1,007
Charge-offs		(1)
Provision	(11)	(271)
Ending Balance	700	735
Collectively evaluated for impairment	700	735
Ending Balance	60,350	178,433
Collectively evaluated for impairment	60,350	178,433
Consumer - Non-Real Estate \| Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Balance	5	11
Provision		(2)
Ending Balance	5	9
Collectively evaluated for impairment	5	9
Ending Balance	513	793
Collectively evaluated for impairment	$ 513	$ 793

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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-Publisher FASB
-Name Accounting Standards Codification
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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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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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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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