Loans - Impaired Loan Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Unpaid Contractual Principal Balance
With No Related Allowance Recorded	$ 8,298	$ 20,129
With An Allowance Recorded	1,115	7,876
Loans Including Purchased Credit Impaired Loans	11,612	28,384
Recorded investment
With No Related Allowance Recorded	7,503	19,249
With An Allowance Recorded	1,256	7,865
Loans Including Purchased Credit Impaired Loans	10,748	27,361
Related allowance
With An Allowance Recorded	256	1,925
Total Impaired Loans	376	2,010
Average Recorded Investment
With No Related Allowance Recorded	13,563	17,376
With An Allowance Recorded	5,538	7,766
Loans Including Purchased Credit Impaired Loans	20,068	25,476
Purchase credit impaired
Unpaid Contractual Principal Balance
Loans Including Purchased Credit Impaired Loans	2,199	379
Recorded investment
Loans Including Purchased Credit Impaired Loans	1,989	247
Related allowance
With An Allowance Recorded	120	85
Purchased Credit Impaired Loans	120	85
Average Recorded Investment
Loans Including Purchased Credit Impaired Loans	967	334
Construction, land & land development
Unpaid Contractual Principal Balance
With No Related Allowance Recorded	62	6,969
With An Allowance Recorded	0	0
Loans Including Purchased Credit Impaired Loans	62	7,087
Recorded investment
With No Related Allowance Recorded	62	6,982
With An Allowance Recorded	0	0
Loans Including Purchased Credit Impaired Loans	62	7,076
Related allowance
With An Allowance Recorded	0	0
Total Impaired Loans	0	0
Average Recorded Investment
With No Related Allowance Recorded	4,311	2,841
With An Allowance Recorded	0	0
Loans Including Purchased Credit Impaired Loans	4,362	2,937
Construction, land & land development | Purchase credit impaired
Unpaid Contractual Principal Balance
Loans Including Purchased Credit Impaired Loans	0	118
Recorded investment
Loans Including Purchased Credit Impaired Loans	0	94
Related allowance
With An Allowance Recorded	0	0
Purchased Credit Impaired Loans	0	0
Average Recorded Investment
Loans Including Purchased Credit Impaired Loans	51	96
Other commercial real estate
Unpaid Contractual Principal Balance
With No Related Allowance Recorded	7,203	11,978
With An Allowance Recorded	430	6,292
Loans Including Purchased Credit Impaired Loans	9,636	18,270
Recorded investment
With No Related Allowance Recorded	6,369	11,105
With An Allowance Recorded	483	6,325
Loans Including Purchased Credit Impaired Loans	8,768	17,430
Related allowance
With An Allowance Recorded	148	1,436
Total Impaired Loans	166	1,436
Average Recorded Investment
With No Related Allowance Recorded	8,113	12,190
With An Allowance Recorded	4,429	5,945
Loans Including Purchased Credit Impaired Loans	13,344	18,198
Other commercial real estate | Purchase credit impaired
Unpaid Contractual Principal Balance
Loans Including Purchased Credit Impaired Loans	2,003	0
Recorded investment
Loans Including Purchased Credit Impaired Loans	1,916	0
Related allowance
With An Allowance Recorded	18	0
Purchased Credit Impaired Loans	18	0
Average Recorded Investment
Loans Including Purchased Credit Impaired Loans	802	63
Residential real estate
Unpaid Contractual Principal Balance
With No Related Allowance Recorded	958	1,140
With An Allowance Recorded	685	1,274
Loans Including Purchased Credit Impaired Loans	1,647	2,428
Recorded investment
With No Related Allowance Recorded	997	1,122
With An Allowance Recorded	773	1,230
Loans Including Purchased Credit Impaired Loans	1,770	2,363
Related allowance
With An Allowance Recorded	108	226
Total Impaired Loans	114	230
Average Recorded Investment
With No Related Allowance Recorded	1,083	2,142
With An Allowance Recorded	1,029	703
Loans Including Purchased Credit Impaired Loans	2,119	2,858
Residential real estate | Purchase credit impaired
Unpaid Contractual Principal Balance
Loans Including Purchased Credit Impaired Loans	4	14
Recorded investment
Loans Including Purchased Credit Impaired Loans	0	11
Related allowance
With An Allowance Recorded	6	4
Purchased Credit Impaired Loans	6	4
Average Recorded Investment
Loans Including Purchased Credit Impaired Loans	7	13
Commercial, financial, & agricultural
Unpaid Contractual Principal Balance
With No Related Allowance Recorded	75	42
With An Allowance Recorded	0	310
Loans Including Purchased Credit Impaired Loans	75	407
Recorded investment
With No Related Allowance Recorded	75	40
With An Allowance Recorded	0	310
Loans Including Purchased Credit Impaired Loans	75	396
Related allowance
With An Allowance Recorded	0	263
Total Impaired Loans	0	263
Average Recorded Investment
With No Related Allowance Recorded	56	203
With An Allowance Recorded	79	1,118
Loans Including Purchased Credit Impaired Loans	170	1,370
Commercial, financial, & agricultural | Purchase credit impaired
Unpaid Contractual Principal Balance
Loans Including Purchased Credit Impaired Loans	0	55
Recorded investment
Loans Including Purchased Credit Impaired Loans	0	46
Related allowance
With An Allowance Recorded	0	0
Purchased Credit Impaired Loans	0	0
Average Recorded Investment
Loans Including Purchased Credit Impaired Loans	35	49
Consumer & other
Unpaid Contractual Principal Balance
With No Related Allowance Recorded	0	0
With An Allowance Recorded	0	0
Loans Including Purchased Credit Impaired Loans	192	192
Recorded investment
With No Related Allowance Recorded	0	0
With An Allowance Recorded	0	0
Loans Including Purchased Credit Impaired Loans	73	96
Related allowance
With An Allowance Recorded	0	0
Total Impaired Loans	96	81
Average Recorded Investment
With No Related Allowance Recorded	0	0
With An Allowance Recorded	1	0
Loans Including Purchased Credit Impaired Loans	73	113
Consumer & other | Purchase credit impaired
Unpaid Contractual Principal Balance
Loans Including Purchased Credit Impaired Loans	192	192
Recorded investment
Loans Including Purchased Credit Impaired Loans	73	96
Related allowance
With An Allowance Recorded	96	81
Purchased Credit Impaired Loans	96	81
Average Recorded Investment
Loans Including Purchased Credit Impaired Loans	$ 72	$ 113