Loans and Allowance for loan losses (Schedule of summary loan portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 853,458	$ 876,616
Net deferred loan costs	9,068	8,830
Allowance for loan losses	(7,559)	(11,633)	$ (5,954)
Total net loans	854,967	873,813
Indirect automobile
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	382,088	376,260
Allowance for loan losses	(3,416)	(4,974)	(3,117)
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	311,589	284,120
Allowance for loan losses	(3,317)	(5,354)	(2,009)
Commercial real estate \| Construction
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	10,095	5,392
Commercial real estate \| Non-residential
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	245,568	248,349
Commercial real estate \| Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	55,926	30,379
Residential
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	35,646	39,239
Allowance for loan losses	(54)	(117)	(99)
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	104,323	154,016
Allowance for loan losses	(725)	(1,050)	(603)
Commercial and industrial \| Small Business Administration Paycheck Protection Program
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	29,464	75,366
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	19,812	22,981
Allowance for loan losses	(47)	(138)	$ (126)
Consumer \| Indirect automobile
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	382,088	376,260
Consumer \| Home equity
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	11,857	14,165
Consumer \| Other consumer
Loans and Leases Receivable Disclosure [Line Items]
Total gross loans	$ 7,955	$ 8,816

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 of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts 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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