Loans - Loan Portfolio by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,022,618	$ 1,059,503
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	664,823	641,484
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	170,173	183,021
Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	167,717	213,380
Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	19,905	21,618
Construction, land and land development
Loans and Leases Receivable Disclosure [Line Items]
Loans	118,940	121,093
Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	118,940	121,093
Other commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	545,883	520,391
Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	545,883	520,391
Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	965,864	974,573
Legacy Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	627,068	587,022
Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	159,527	167,714
Legacy Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	161,295	200,800
Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	17,974	19,037
Legacy Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	112,843	109,577
Legacy Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	514,225	477,445
Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	56,754	84,930
Purchased Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	37,755	54,462
Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	10,646	15,307
Purchased Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,422	12,580
Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,931	2,581
Purchased Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,097	11,516
Purchased Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	31,658	42,946
Pass | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	906,303	903,355
Pass | Legacy Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	580,926	529,945
Pass | Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	150,077	157,927
Pass | Legacy Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	157,574	196,749
Pass | Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	17,726	18,734
Pass | Legacy Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	102,379	99,430
Pass | Legacy Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	478,547	430,515
Pass | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	51,494	79,571
Pass | Purchased Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	33,328	52,100
Pass | Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	10,258	14,909
Pass | Purchased Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,076	10,198
Pass | Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,832	2,364
Pass | Purchased Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	5,936	11,275
Pass | Purchased Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	27,392	40,825
Special Mention | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	26,987	43,368
Special Mention | Legacy Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	21,944	36,519
Special Mention | Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,787	3,855
Special Mention | Legacy Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,139	2,870
Special Mention | Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	117	124
Special Mention | Legacy Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,812	2,940
Special Mention | Legacy Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	19,132	33,579
Special Mention | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	3,866	2,434
Special Mention | Purchased Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	3,564	294
Special Mention | Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	299	312
Special Mention | Purchased Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	1,803
Special Mention | Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	3	25
Special Mention | Purchased Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	161	241
Special Mention | Purchased Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	3,403	53
Substandard | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	32,574	27,850
Substandard | Legacy Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	24,198	20,558
Substandard | Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,663	5,932
Substandard | Legacy Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,582	1,181
Substandard | Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	131	179
Substandard | Legacy Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	7,652	7,207
Substandard | Legacy Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	16,546	13,351
Substandard | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,394	2,925
Substandard | Purchased Loans | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	863	2,068
Substandard | Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	89	86
Substandard | Purchased Loans | Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	346	579
Substandard | Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	96	192
Substandard | Purchased Loans | Construction, land and land development | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	0
Substandard | Purchased Loans | Other commercial real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 863	$ 2,068