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Loans, Allowance for Credit Losses and Impaired Loans - Loan Impairment and Allowance for Credit Losses (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) customer	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) customer	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Allowance for credit losses
Beginning Balance	$ 14,059		$ 14,656	$ 13,203	$ 13,203
Charge-offs	(722)		(1,780)		(988)
Recoveries	62		139		118
Provisions for credit losses	419	$ (30)	803	2,568	2,323
Ending Balance	13,818		13,818		14,656
Purchased credit impaired loans: Balance in allowance					9
Purchased credit impaired loans: Related loan balance	1,086		1,086		2,181
Individually evaluated for impairment: Balance in allowance	300		300		1,455
Individually evaluated for impairment: Related loan balance	6,788		6,788		13,218
Collectively evaluated for impairment: Balance in allowance	13,518		13,518		13,192
Collectively evaluated for impairment: Related loan balance	1,196,086		1,196,086		1,101,796
Unamortized discounts on acquired loans	1,800		1,800		2,300
Nonaccrual loans
Loans past due 90 days or more still accruing interest	275		275
Paycheck Protection Program
Carrying amount	1,203,960		1,203,960		1,117,195
PPP Loans
Paycheck Protection Program
Loans funded	95,100		95,100
Carrying amount	$ 0		$ 0		8,200
PPP Loans \| Minimum
Paycheck Protection Program
Number of customers through PPP \| customer	1,130		1,130
Real Estate Mortgage \| Construction and Land Development
Allowance for credit losses
Beginning Balance	$ 935		$ 1,143	903	903
Recoveries	1				1
Provisions for credit losses	157		(50)		239
Ending Balance	1,093		1,093		1,143
Purchased credit impaired loans: Related loan balance					46
Individually evaluated for impairment: Related loan balance	575		575		598
Collectively evaluated for impairment: Balance in allowance	1,093		1,093		1,143
Collectively evaluated for impairment: Related loan balance	118,636		118,636		107,339
Paycheck Protection Program
Carrying amount	119,211		119,211		107,983
Real Estate Mortgage \| Residential Real Estate
Allowance for credit losses
Beginning Balance	1,869		1,893	2,351	2,351
Charge-offs					(39)
Recoveries	16		56		23
Provisions for credit losses	98		34		(442)
Ending Balance	1,983		1,983		1,893
Purchased credit impaired loans: Balance in allowance					9
Purchased credit impaired loans: Related loan balance	715		715		1,633
Individually evaluated for impairment: Balance in allowance	21		21		3
Individually evaluated for impairment: Related loan balance	1,731		1,731		2,082
Collectively evaluated for impairment: Balance in allowance	1,962		1,962		1,881
Collectively evaluated for impairment: Related loan balance	221,875		221,875		197,515
Nonaccrual loans
Loans past due 90 days or more still accruing interest	230		230
Paycheck Protection Program
Carrying amount	224,321		224,321		201,230
Real Estate Mortgage \| Nonresidential
Allowance for credit losses
Beginning Balance	9,203		9,239	7,584	7,584
Charge-offs	(659)		(1,545)		(692)
Recoveries	6		22		53
Provisions for credit losses	(387)		447		2,294
Ending Balance	8,163		8,163		9,239
Purchased credit impaired loans: Related loan balance	353		353		376
Individually evaluated for impairment: Balance in allowance					1,000
Individually evaluated for impairment: Related loan balance	4,092		4,092		9,901
Collectively evaluated for impairment: Balance in allowance	8,163		8,163		8,239
Collectively evaluated for impairment: Related loan balance	693,869		693,869		631,940
Paycheck Protection Program
Carrying amount	698,314		698,314		642,217
Real Estate Mortgage \| Home Equity Loans
Allowance for credit losses
Beginning Balance	234		212	271	271
Charge-offs			(27)		(7)
Recoveries			6		3
Provisions for credit losses	14		57		(55)
Ending Balance	248		248		212
Individually evaluated for impairment: Related loan balance	53		53		53
Collectively evaluated for impairment: Balance in allowance	248		248		212
Collectively evaluated for impairment: Related loan balance	30,716		30,716		30,342
Nonaccrual loans
Loans past due 90 days or more still accruing interest	45		45
Paycheck Protection Program
Carrying amount	30,769		30,769		30,395
Commercial
Allowance for credit losses
Beginning Balance	1,663		1,885	1,943	1,943
Charge-offs	(47)		(167)		(184)
Recoveries	2		13		16
Provisions for credit losses	273		160		110
Ending Balance	1,891		1,891		1,885
Purchased credit impaired loans: Related loan balance	18		18		126
Individually evaluated for impairment: Balance in allowance	279		279		452
Individually evaluated for impairment: Related loan balance	337		337		584
Collectively evaluated for impairment: Balance in allowance	1,612		1,612		1,433
Collectively evaluated for impairment: Related loan balance	127,318		127,318		130,198
Paycheck Protection Program
Carrying amount	127,673		127,673		130,908
Consumer and Other
Allowance for credit losses
Beginning Balance	31		36	37	37
Charge-offs	(16)		(41)		(66)
Recoveries	37		42		22
Provisions for credit losses	34		49		43
Ending Balance	86		86		36
Collectively evaluated for impairment: Balance in allowance	86		86		36
Collectively evaluated for impairment: Related loan balance	3,672		3,672		4,462
Paycheck Protection Program
Carrying amount	3,672		3,672		4,462
Unallocated
Allowance for credit losses
Beginning Balance	124		248	$ 114	114
Provisions for credit losses	230		106		134
Ending Balance	354		354		248
Collectively evaluated for impairment: Balance in allowance	354		354		248
Originated Loans
Paycheck Protection Program
Carrying amount	1,058,424		1,058,424		913,314
Originated Loans \| Real Estate Mortgage \| Construction and Land Development
Paycheck Protection Program
Carrying amount	119,172		119,172		107,478
Originated Loans \| Real Estate Mortgage \| Residential Real Estate
Paycheck Protection Program
Carrying amount	196,772		196,772		159,701
Originated Loans \| Real Estate Mortgage \| Nonresidential
Paycheck Protection Program
Carrying amount	603,738		603,738		513,873
Originated Loans \| Real Estate Mortgage \| Home Equity Loans
Paycheck Protection Program
Carrying amount	21,769		21,769		19,246
Originated Loans \| Commercial
Paycheck Protection Program
Carrying amount	113,814		113,814		109,470
Originated Loans \| Consumer and Other
Paycheck Protection Program
Carrying amount	3,159		3,159		3,546
Acquired Loans
Paycheck Protection Program
Carrying amount	145,536		145,536		203,881
Acquired Loans \| Real Estate Mortgage \| Construction and Land Development
Paycheck Protection Program
Carrying amount	39		39		505
Acquired Loans \| Real Estate Mortgage \| Residential Real Estate
Paycheck Protection Program
Carrying amount	27,549		27,549		41,529
Acquired Loans \| Real Estate Mortgage \| Nonresidential
Paycheck Protection Program
Carrying amount	94,576		94,576		128,344
Acquired Loans \| Real Estate Mortgage \| Home Equity Loans
Paycheck Protection Program
Carrying amount	9,000		9,000		11,149
Acquired Loans \| Commercial
Paycheck Protection Program
Carrying amount	13,859		13,859		21,438
Acquired Loans \| Consumer and Other
Paycheck Protection Program
Carrying amount	$ 513		$ 513		$ 916