Allowance for Loan Losses - Loan losses by portfolio segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	$ 12,398	$ 11,345
Charge-Offs	(117)	(163)
Recoveries	41	49
Provision (Credit)	(400)	400
Balance at End of Period	11,922	11,631
Allocation for general risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	1,232	1,093
Charge-Offs	0	0
Recoveries	0	0
Provision (Credit)	(55)	68
Balance at End of Period	1,177	1,161
Commercial | Commercial.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	3,071	3,472
Charge-Offs	(72)	(122)
Recoveries	0	17
Provision (Credit)	252	205
Balance at End of Period	3,251	3,572
Commercial | Commercial loans secured by Non-Owner Occupied real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	6,392	5,373
Charge-Offs	0	0
Recoveries	13	13
Provision (Credit)	(475)	62
Balance at End of Period	5,930	5,448
Consumer. | REAL ESTATE - RESIDENTIAL MORTGAGE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	1,590	1,292
Charge-Offs	0	(17)
Recoveries	8	5
Provision (Credit)	(133)	49
Balance at End of Period	1,465	1,329
Consumer. | CONSUMER
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at Beginning of Period	113	115
Charge-Offs	(45)	(24)
Recoveries	20	14
Provision (Credit)	11	16
Balance at End of Period	$ 99	$ 121