Loans - Loan Portfolio by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,113,977	$ 968,814
Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	649,938	636,336
Construction, land and land development
Loans and Leases Receivable Disclosure [Line Items]
Loans	131,797	96,097
Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	131,797	96,097
Other commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	518,141	540,239
Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	518,141	540,239
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	188,339	194,796
Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	250,915	114,360
Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	24,785	23,322
Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	988,714	847,100
Legacy Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	570,926	564,979
Legacy Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	104,153	83,036
Legacy Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	466,773	481,943
Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	160,418	171,341
Legacy Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	235,862	91,535
Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	21,508	19,245
Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	125,263	121,714
Purchased Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	79,012	71,357
Purchased Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	27,644	13,061
Purchased Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	51,368	58,296
Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	27,921	23,455
Purchased Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	15,053	22,825
Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	3,277	4,077
Pass | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	939,658	806,021
Pass | Legacy Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	538,217	541,386
Pass | Legacy Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	94,837	82,322
Pass | Legacy Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	443,380	459,064
Pass | Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	149,085	159,194
Pass | Legacy Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	231,187	86,558
Pass | Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	21,169	18,883
Pass | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	120,795	117,494
Pass | Purchased Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	77,907	70,877
Pass | Purchased Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	26,951	12,996
Pass | Purchased Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	50,956	57,881
Pass | Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	27,563	23,097
Pass | Purchased Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	12,136	19,443
Pass | Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	3,189	4,077
Special Mention | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	28,318	20,636
Special Mention | Legacy Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	21,040	13,883
Special Mention | Legacy Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	9,054	445
Special Mention | Legacy Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	11,986	13,438
Special Mention | Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	4,463	4,632
Special Mention | Legacy Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,649	1,973
Special Mention | Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	166	148
Special Mention | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	4,129	3,579
Special Mention | Purchased Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	987	381
Special Mention | Purchased Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	611	0
Special Mention | Purchased Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	376	381
Special Mention | Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	267	249
Special Mention | Purchased Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,875	2,949
Special Mention | Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	0
Substandard | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	20,738	20,443
Substandard | Legacy Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	11,669	9,710
Substandard | Legacy Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	262	269
Substandard | Legacy Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	11,407	9,441
Substandard | Legacy Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,870	7,515
Substandard | Legacy Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	2,026	3,004
Substandard | Legacy Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	173	214
Substandard | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	339	641
Substandard | Purchased Loans | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	118	99
Substandard | Purchased Loans | Construction, land and land development | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	82	65
Substandard | Purchased Loans | Other commercial real estate | Commercial Real Estate Portfolio Segment
Loans and Leases Receivable Disclosure [Line Items]
Loans	36	34
Substandard | Purchased Loans | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	91	109
Substandard | Purchased Loans | Commercial, financial, & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	42	433
Substandard | Purchased Loans | Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 88	$ 0