Loans and Allowance for Credit Losses (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Allowance for credit losses allocated to:
Beginning balance	$ 15,088	$ 11,090	$ 13,888	$ 10,507
Charge-offs	(56)	(101)	(167)	(1,018)
Recoveries	203	288	439	438
Net (charge-offs) recoveries	147	187	272	(580)
Provision	290	1,500	1,365	2,850
Ending balance	15,525	12,777	15,525	12,777
Construction Loans [Member]
Allowance for credit losses allocated to:
Beginning balance			2,022	1,576
Recoveries			171	13
Net (charge-offs) recoveries			171	13
Provision			428	(31)
Ending balance	2,621	1,558	2,621	1,558
Commercial and Residential Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Allowance for credit losses allocated to:
Beginning balance	2,574	1,497
Recoveries	161	5
Net (charge-offs) recoveries	161	5
Provision	(114)	56
Ending balance	2,621	1,558	2,621	1,558
Residential Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	3,812	2,639	3,699	2,501
Charge-offs		(10)		(201)
Recoveries	9	199	72	206
Net (charge-offs) recoveries	9	189	72	5
Provision	77	456	127	778
Ending balance	3,898	3,284	3,898	3,284
Commercial Real Estate Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	5,600	4,097	5,426	4,032
Charge-offs		(1)		(601)
Recoveries		1	64
Net (charge-offs) recoveries			64	(601)
Provision	(73)	1,002	37	1,668
Ending balance	5,527	5,099	5,527	5,099
Commercial Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	1,879	2,355	2,089	1,929
Charge-offs	(55)	(89)	(162)	(208)
Recoveries	26	81	122	205
Net (charge-offs) recoveries	(29)	(8)	(40)	(3)
Provision	2	(126)	(197)	295
Ending balance	1,852	2,221	1,852	2,221
Consumer Portfolio Segment [Member]
Allowance for credit losses allocated to:
Beginning balance	1,223	502	652	469
Charge-offs	(1)	(1)	(5)	(8)
Recoveries	7	2	10	14
Net (charge-offs) recoveries	6	1	5	6
Provision	398	112	970	140
Ending balance	$ 1,627	$ 615	$ 1,627	$ 615