Allowance for Loan Losses - Segregated by Class of Loan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 12,693	$ 8,384	$ 12,127	$ 6,863
Charge-offs	(68)	(384)	(94)	(897)
Recoveries	246	89	338	167
Provision	0	2,200	500	4,156
Ending balance	12,871	10,289	12,871	10,289
Period end amount allocated to
Individually evaluated for impairment	1,574		1,574		$ 1,925
Collectively evaluated for impairment	11,150		11,150		10,117
Purchase credit impaired	1,574		1,574		1,925
Loans
Individually evaluated for impairment	21,012		21,012		27,114
Collectively evaluated for impairment	1,000,498		1,000,498		1,032,142
Purchase credit impaired	22,119		22,119		27,361
Loans	1,022,618		1,022,618		1,059,503
Purchase credit impaired
Period end amount allocated to
Purchase credit impaired	147		147		85
Loans
Purchase credit impaired	1,108		1,108		247
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,411	1,203	2,278	980
Charge-offs	0	(16)	0	(80)
Recoveries	44	6	110	10
Provision	(182)	438	(115)	721
Ending balance	2,273	1,631	2,273	1,631
Period end amount allocated to
Individually evaluated for impairment	224		224		226
Collectively evaluated for impairment	2,040		2,040		2,048
Purchase credit impaired	224		224		226
Loans
Individually evaluated for impairment	2,166		2,166		2,352
Collectively evaluated for impairment	167,995		167,995		180,658
Purchase credit impaired	2,178		2,178		2,363
Loans	170,173		170,173		183,021
Residential real estate | Purchase credit impaired
Period end amount allocated to
Purchase credit impaired	9		9		4
Loans
Purchase credit impaired	12		12		11
Commercial, financial & agricultural
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,666	1,780	1,713	1,657
Charge-offs	0	0	(15)	(68)
Recoveries	15	19	18	20
Provision	92	114	57	304
Ending balance	1,773	1,913	1,773	1,913
Period end amount allocated to
Individually evaluated for impairment	0		0		263
Collectively evaluated for impairment	1,769		1,769		1,450
Purchase credit impaired	0		0		263
Loans
Individually evaluated for impairment	85		85		350
Collectively evaluated for impairment	167,585		167,585		212,984
Purchase credit impaired	132		132		396
Loans	167,717		167,717		213,380
Commercial, financial & agricultural | Purchase credit impaired
Period end amount allocated to
Purchase credit impaired	4		4		0
Loans
Purchase credit impaired	47		47		46
Consumer and other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	435	226	243	103
Charge-offs	(32)	(364)	(43)	(715)
Recoveries	22	31	30	86
Provision	(2)	382	193	801
Ending balance	423	275	423	275
Period end amount allocated to
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	327		327		162
Purchase credit impaired	0		0		0
Loans
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	19,809		19,809		21,522
Purchase credit impaired	96		96		96
Loans	19,905		19,905		21,618
Consumer and other | Purchase credit impaired
Period end amount allocated to
Purchase credit impaired	96		96		81
Loans
Purchase credit impaired	96		96		96
Construction, land and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,053	354	1,013	215
Charge-offs	0	(4)	0	(4)
Recoveries	70	12	85	25
Provision	2	397	27	523
Ending balance	1,125	759	1,125	759
Period end amount allocated to
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	1,125		1,125		1,013
Purchase credit impaired	0		0		0
Loans
Individually evaluated for impairment	6,968		6,968		6,982
Collectively evaluated for impairment	111,881		111,881		114,017
Purchase credit impaired	7,058		7,058		7,076
Loans	118,940		118,940		121,093
Construction, land and land development | Purchase credit impaired
Period end amount allocated to
Purchase credit impaired	0		0		0
Loans
Purchase credit impaired	91		91		94
Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	7,128	4,821	6,880	3,908
Charge-offs	(36)	0	(36)	(30)
Recoveries	95	21	95	26
Provision	90	869	338	1,807
Ending balance	7,277	$ 5,711	7,277	$ 5,711
Period end amount allocated to
Individually evaluated for impairment	1,350		1,350		1,436
Collectively evaluated for impairment	5,889		5,889		5,444
Purchase credit impaired	1,350		1,350		1,436
Loans
Individually evaluated for impairment	11,793		11,793		17,430
Collectively evaluated for impairment	533,228		533,228		502,961
Purchase credit impaired	12,655		12,655		17,430
Loans	545,883		545,883		520,391
Other commercial real estate | Purchase credit impaired
Period end amount allocated to
Purchase credit impaired	38		38		0
Loans
Purchase credit impaired	$ 862		$ 862		$ 0