Loans and Allowance for Credit Losses (Loans by Class of Loan Portfolio) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,276,993	$ 1,248,654
Allowance for credit losses	(10,378)	(10,507)
Loans, net	1,266,615	1,238,147
Commercial and Residential Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans	109,608	99,829
Allowance for credit losses	(1,128)	(1,576)
Residential Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans	437,197	442,506
Allowance for credit losses	(2,482)	(2,501)
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans	610,889	586,562
Allowance for credit losses	(3,965)	(4,032)
Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans	96,905	102,020
Allowance for credit losses	(2,263)	(1,929)
Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans	22,394	17,737
Allowance for credit losses	$ (540)	$ (469)

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 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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