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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, 2021	Dec. 31, 2020
FINANCIAL ASSETS: Carrying Value
Investment securities - HTM, Carrying Value	$ 53,942	$ 44,222
Loans held for sale, Carrying Value		6,250
Loans, net of allowance for loan loss and unearned income, Carrying Value	983,905	960,750
Investment securities - HTM, Fair Value	56,070	47,106
Loans held for sale, Fair Value		6,428
Loans, net of allowance for loan loss and unearned income, Fair Value	988,679	969,433
FINANCIAL LIABILITIES: Carrying Value
Deposits with stated maturities, Carrying Value	303,025	311,064
All other borrowings, Carrying Value	70,253	85,493
Deposits with stated maturities, Fair Value	305,424	314,845
All other borrowings, Fair Value	$ 71,207	90,907
Assets and liabilities considered financial instruments, percentage	90.00%
Level 1
FINANCIAL ASSETS: Carrying Value
Loans held for sale, Fair Value		6,428
Level 2
FINANCIAL ASSETS: Carrying Value
Investment securities - HTM, Fair Value	$ 53,071	44,108
Level 3
FINANCIAL ASSETS: Carrying Value
Investment securities - HTM, Fair Value	2,999	2,998
Loans, net of allowance for loan loss and unearned income, Fair Value	988,679	969,433
FINANCIAL LIABILITIES: Carrying Value
Deposits with stated maturities, Fair Value	305,424	314,845
All other borrowings, Fair Value	$ 71,207	$ 90,907

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

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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