Loans and Allowance for Credit Losses (Effect on Loan Loss Provision as a Result of Changes in Methodology) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	$ 650	$ 1,000	$ 1,075	$ 1,350
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	56	153	50	322
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	439	463	110	666
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	(119)	68	(199)	421
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	501	(48)	572	28
Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses			$ 542	$ (87)
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	$ (227)	$ 364