Loans - Segregated by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,062,775	$ 1,059,503
Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	992,993	974,573
Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	69,783	84,930
Construction, land and land development
Loans and Leases Receivable Disclosure [Line Items]
Loans	115,967	121,093
Other commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	538,080	520,391
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	654,047	641,484
Commercial real estate | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	609,189	587,022
Commercial real estate | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	44,860	54,462
Commercial real estate | Construction, land and land development
Loans and Leases Receivable Disclosure [Line Items]
Loans	115,967	121,093
Commercial real estate | Construction, land and land development | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	109,585	109,577
Commercial real estate | Construction, land and land development | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	6,383	11,516
Commercial real estate | Other commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	538,080	520,391
Commercial real estate | Other commercial real estate | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	499,604	477,445
Commercial real estate | Other commercial real estate | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	38,477	42,946
Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans	178,211	183,021
Residential real estate | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	165,887	167,714
Residential real estate | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	12,324	15,307
Commercial, financial & agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	210,315	213,380
Commercial, financial & agricultural | Paycheck Protection Program, CARES Act
Loans and Leases Receivable Disclosure [Line Items]
Loans	102,600	101,100
Commercial, financial & agricultural | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	199,862	200,800
Commercial, financial & agricultural | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	10,452	12,580
Consumer and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	20,202	21,618
Consumer and other | Legacy Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	18,055	19,037
Consumer and other | Purchased Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 2,147	$ 2,581