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Loans - Pre-Modification Balances of TDR (Details) - Nonperforming Financial Instruments $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan	2	13	9
Pre-Modification Recorded Balance	$ 131	$ 3,127	$ 4,202
Total Modifications	$ 126	$ 2,943	$ 3,614
Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan		7	3
Pre-Modification Recorded Balance		$ 2,908	$ 2,877
Total Modifications		$ 2,748	$ 2,753
Real estate | Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan			1
Pre-Modification Recorded Balance			$ 361
Total Modifications			$ 343
Real estate | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan		2
Pre-Modification Recorded Balance		$ 1,696
Total Modifications		$ 1,694
Real estate | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan	1	5	2
Pre-Modification Recorded Balance	$ 31	$ 1,212	$ 2,516
Total Modifications	$ 26	$ 1,054	$ 2,410
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan	1	5	5
Pre-Modification Recorded Balance	$ 100	$ 217	$ 1,314
Total Modifications	100	$ 193	$ 852
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan		1	1
Pre-Modification Recorded Balance		$ 2	$ 11
Total Modifications		2	9
Term Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	126	1,887	861
Term Concessions | Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		1,694	0
Term Concessions | Real estate | Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications			0
Term Concessions | Real estate | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		1,694
Term Concessions | Real estate | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	26	0	0
Term Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	100	193	852
Term Concessions | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0	9
Interest Rate Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	177	0
Interest Rate Concessions | Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		177	0
Interest Rate Concessions | Real estate | Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications			0
Interest Rate Concessions | Real estate | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0
Interest Rate Concessions | Real estate | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	177	0
Interest Rate Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	0	0
Interest Rate Concessions | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0	0
Combination of Term and Rate Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	879	2,753
Combination of Term and Rate Concessions | Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		877	2,753
Combination of Term and Rate Concessions | Real estate | Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications			343
Combination of Term and Rate Concessions | Real estate | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0
Combination of Term and Rate Concessions | Real estate | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	877	2,410
Combination of Term and Rate Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	$ 0	0	0
Combination of Term and Rate Concessions | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		$ 2	$ 0

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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