Allowance for Loan Losses - Segregated by Class of Loan (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 6,863	$ 7,277
Charge-offs	(513)	(944)
Recoveries	78	125
Provision	1,956	131
Ending balance	8,384	6,589
Period end amount allocated to
Individually evaluated for impairment	3,157		$ 3,149
Collectively evaluated for impairment	5,127		3,708
Loans
Individually evaluated for impairment	24,006	23,808
Collectively evaluated for impairment	964,505	944,859
Loans	989,026	968,814	968,814
Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	6
Ending balance	100
Loans
Loans	515	147
Construction, land and land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	215	131
Charge-offs	0	(29)
Recoveries	13	17
Provision	126	(99)
Ending balance	354	20
Period end amount allocated to
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	354		215
Loans
Individually evaluated for impairment	66	67
Collectively evaluated for impairment	133,852	95,965
Loans	134,037	96,097
Construction, land and land development \| Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending balance	0
Loans
Loans	119	65
Other commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,908	5,251
Charge-offs	(30)	(119)
Recoveries	5	34
Provision	938	(104)
Ending balance	4,821	5,062
Period end amount allocated to
Individually evaluated for impairment	2,077		1,939
Collectively evaluated for impairment	2,744		1,969
Loans
Individually evaluated for impairment	18,595	18,024
Collectively evaluated for impairment	505,764	522,181
Loans	524,484	540,239
Other commercial real estate \| Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending balance	0
Loans
Loans	125	34
Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	980	1,181
Charge-offs	(64)	(629)
Recoveries	4	49
Provision	283	348
Ending balance	1,203	949
Period end amount allocated to
Individually evaluated for impairment	99		137
Collectively evaluated for impairment	1,092		837
Loans
Individually evaluated for impairment	2,990	3,471
Collectively evaluated for impairment	187,961	191,314
Loans	190,969	194,796	194,796
Residential real estate \| Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	6
Ending balance	12
Loans
Loans	18	11
Commercial, financial, & agricultural
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,657	618
Charge-offs	(68)	(97)
Recoveries	1	6
Provision	190	(61)
Ending balance	1,780	466
Period end amount allocated to
Individually evaluated for impairment	981		1,073
Collectively evaluated for impairment	799		584
Loans
Individually evaluated for impairment	2,355	2,246
Collectively evaluated for impairment	114,369	112,077
Loans	116,786	114,360	114,360
Commercial, financial, & agricultural \| Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending balance	0
Loans
Loans	62	37
Consumer and other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	103	96
Charge-offs	(351)	(70)
Recoveries	55	19
Provision	419	47
Ending balance	226	92
Period end amount allocated to
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	138		103
Loans
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	22,559	23,322
Loans	22,750	23,322	$ 23,322
Consumer and other \| Financial Asset Acquired with Credit Deterioration
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	0
Ending balance	88
Loans
Loans	$ 191	$ 0

Loans And Leases, Additional Information

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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