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Disclosures about Fair Value Measurements and Financial Instruments - Schedule of estimated fair value and recorded carrying value (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
FINANCIAL ASSETS: Carrying Value
Investment securities - HTM, Carrying Value	$ 42,636	$ 39,936
Loans held for sale	7,587	4,868
Loans, net of allowance for loan loss and unearned income, Carrying Value	931,496	873,427
Investment securities - HTM, Fair Value	45,308	41,082
Loans held for sale, Fair Value	7,766	4,970
Loans, net of allowance for loan loss and unearned income, Fair Value	941,988	873,908
FINANCIAL LIABILITIES: Carrying Value
Deposits with no stated maturities, Carrying Value	728,507	651,469
Deposits with stated maturities, Carrying Value	313,728	309,044
All other borrowings, Carrying Value	94,830	74,134
Deposits with no stated maturities, Fair Value	745,879	631,023
Deposits with stated maturities, Fair Value	317,679	310,734
All other borrowings, Fair Value	$ 100,945	76,323
Assets and liabilities considered financial instruments, percentage	90.00%
Level 1
FINANCIAL ASSETS: Carrying Value
Loans held for sale, Fair Value	$ 7,766	4,970
Level 2
FINANCIAL ASSETS: Carrying Value
Investment securities - HTM, Fair Value	42,311	38,129
Level 3
FINANCIAL ASSETS: Carrying Value
Investment securities - HTM, Fair Value	2,997	2,953
Loans, net of allowance for loan loss and unearned income, Fair Value	941,988	873,908
FINANCIAL LIABILITIES: Carrying Value
Deposits with no stated maturities, Fair Value	745,879	631,023
Deposits with stated maturities, Fair Value	317,679	310,734
All other borrowings, Fair Value	$ 100,945	$ 76,323

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Amount of investment in debt security measured at amortized cost (held-to-maturity).

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