Loans and Allowance for Credit Losses (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Allowance for credit losses allocated to:
Beginning balance	$ 10,507	$ 10,343
Charge-offs	(1,097)	(1,097)
Recoveries	578	561
Net (charge-offs) recoveries	(519)	(536)
Provision	3,900	700
Ending balance	13,888	10,507
Commercial and Residential Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Allowance for credit losses allocated to:
Beginning balance	1,576	2,662
Charge-offs		(3)
Recoveries	17	18
Net (charge-offs) recoveries	17	15
Provision	429	(1,101)
Ending balance	2,022	1,576
Residential Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	2,501	2,353
Charge-offs	(201)	(646)
Recoveries	211	27
Net (charge-offs) recoveries	10	(619)
Provision	1,188	767
Ending balance	3,699	2,501
Commercial Real Estate Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	4,032	3,077
Charge-offs	(601)
Recoveries	1	206
Net (charge-offs) recoveries	(600)	206
Provision	1,994	749
Ending balance	5,426	4,032
Commercial Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	1,929	1,949
Charge-offs	(286)	(411)
Recoveries	322	306
Net (charge-offs) recoveries	36	(105)
Provision	124	85
Ending balance	2,089	1,929
Consumer Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	469	302
Charge-offs	(9)	(37)
Recoveries	27	4
Net (charge-offs) recoveries	18	(33)
Provision	165	200
Ending balance	$ 652	$ 469