Loans - Age Analysis of Past Due Loans and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans	$ 1,022,618	$ 1,059,503
Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	965,864	974,573
Nonaccrual Loans	8,896	6,610
Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	56,754	84,930
Nonaccrual Loans	309	2,518
30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	748	2,408
30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	684
90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	748	2,408
Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	684
Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	956,220	965,555
Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	56,445	81,728
Construction, land and land development
Financing Receivable, Past Due [Line Items]
Loans	118,940	121,093
Other commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	545,883	520,391
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	664,823	641,484
Commercial real estate | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	627,068	587,022
Nonaccrual Loans	4,917	2,625
Commercial real estate | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	37,755	54,462
Nonaccrual Loans	87	2,185
Commercial real estate | 30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	186	1,543
Commercial real estate | 30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	544
Commercial real estate | 90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | 90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	186	1,543
Commercial real estate | Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	544
Commercial real estate | Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	621,965	582,854
Commercial real estate | Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	37,668	51,733
Commercial real estate | Construction, land and land development
Financing Receivable, Past Due [Line Items]
Loans	118,940	121,093
Commercial real estate | Construction, land and land development | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	112,843	109,577
Nonaccrual Loans	47	80
Commercial real estate | Construction, land and land development | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	6,097	11,516
Nonaccrual Loans	0	117
Commercial real estate | Construction, land and land development | 30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	25	1,314
Commercial real estate | Construction, land and land development | 30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Construction, land and land development | 90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Construction, land and land development | 90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Construction, land and land development | Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	25	1,314
Commercial real estate | Construction, land and land development | Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Construction, land and land development | Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	112,771	108,183
Commercial real estate | Construction, land and land development | Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	6,097	11,399
Commercial real estate | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	545,883	520,391
Commercial real estate | Other commercial real estate | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	514,225	477,445
Nonaccrual Loans	4,870	2,545
Commercial real estate | Other commercial real estate | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	31,658	42,946
Nonaccrual Loans	87	2,068
Commercial real estate | Other commercial real estate | 30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	161	229
Commercial real estate | Other commercial real estate | 30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	544
Commercial real estate | Other commercial real estate | 90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Other commercial real estate | 90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Other commercial real estate | Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	161	229
Commercial real estate | Other commercial real estate | Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	544
Commercial real estate | Other commercial real estate | Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	509,194	474,671
Commercial real estate | Other commercial real estate | Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	31,571	40,334
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	170,173	183,021
Residential real estate | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	159,527	167,714
Nonaccrual Loans	3,237	2,873
Residential real estate | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	10,646	15,307
Nonaccrual Loans	79	85
Residential real estate | 30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	383	667
Residential real estate | 30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	15
Residential real estate | 90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate | 90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Residential real estate | Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	383	667
Residential real estate | Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	15
Residential real estate | Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	155,907	164,174
Residential real estate | Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	10,567	15,207
Commercial, financial & agricultural
Financing Receivable, Past Due [Line Items]
Loans	167,717	213,380
Commercial, financial & agricultural | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	161,295	200,800
Nonaccrual Loans	654	1,010
Commercial, financial & agricultural | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	6,422	12,580
Nonaccrual Loans	47	55
Commercial, financial & agricultural | 30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	164	150
Commercial, financial & agricultural | 30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	125
Commercial, financial & agricultural | 90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial, financial & agricultural | 90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial, financial & agricultural | Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	164	150
Commercial, financial & agricultural | Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	125
Commercial, financial & agricultural | Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	160,477	199,640
Commercial, financial & agricultural | Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	6,375	12,400
Consumer and other
Financing Receivable, Past Due [Line Items]
Loans	19,905	21,618
Consumer and other | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	17,974	19,037
Nonaccrual Loans	88	102
Consumer and other | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	1,931	2,581
Nonaccrual Loans	96	193
Consumer and other | 30-89 Days Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	15	48
Consumer and other | 30-89 Days Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer and other | 90 Days or More Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer and other | 90 Days or More Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer and other | Total Accruing Loans Past Due | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	15	48
Consumer and other | Total Accruing Loans Past Due | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer and other | Current Loans | Legacy Loans
Financing Receivable, Past Due [Line Items]
Loans	17,871	18,887
Consumer and other | Current Loans | Purchased Loans
Financing Receivable, Past Due [Line Items]
Loans	$ 1,835	$ 2,388