Loans and Allowance for Loan Losses - Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual restructured loans	$ 5,633	$ 2,743
Total Past Due	8,235	6,651
Current Loans	2,341,944	1,863,754
Total loans	2,382,243	1,897,392
Financial Asset, 30 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	2,321	3,182
Financial Asset, 61 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	132	119
Financial Asset, Past 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	149	607
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual restructured loans	3,740	124
Total Past Due	3,941	612
Current Loans	992,912	889,439
Total loans	1,012,976	905,306
Commercial Real Estate [Member] | Financial Asset, 30 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	134	466
Commercial Real Estate [Member] | Financial Asset, 61 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	0	22
Commercial Real Estate [Member] | Financial Asset, Past 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	67	0
Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual restructured loans	1,823	1,872
Total Past Due	3,872	3,466
Current Loans	429,800	407,475
Total loans	443,930	417,482
Consumer Real Estate [Member] | Financial Asset, 30 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	1,916	1,564
Consumer Real Estate [Member] | Financial Asset, 61 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	51	30
Consumer Real Estate [Member] | Financial Asset, Past 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	82	0
Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual restructured loans	12	620
Total Past Due	257	1,734
Current Loans	272,470	221,434
Total loans	278,075	227,626
Construction and Land Development [Member] | Financial Asset, 30 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	245	507
Construction and Land Development [Member] | Financial Asset, 61 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	0	0
Construction and Land Development [Member] | Financial Asset, Past 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	0	607
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual restructured loans	36	57
Total Past Due	124	669
Current Loans	634,014	335,999
Total loans	634,446	337,075
Commercial and Industrial [Member] | Financial Asset, 30 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	12	559
Commercial and Industrial [Member] | Financial Asset, 61 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	76	53
Commercial and Industrial [Member] | Financial Asset, Past 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	0	0
Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual restructured loans	22	70
Total Past Due	41	170
Current Loans	12,748	9,407
Total loans	12,816	9,903
Consumer and Other [Member] | Financial Asset, 30 to 60 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	14	86
Consumer and Other [Member] | Financial Asset, 61 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	5	14
Consumer and Other [Member] | Financial Asset, Past 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due and accruing	0	0
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	32,064	26,987
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	16,123	15,255
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	10,258	6,541
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	5,348	4,458
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	308	407
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	$ 27	$ 326