Loans and Allowance (Activity in Allowance for Loan Losses by Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period				$ 13,281				$ 12,387				$ 12,382	$ 13,281	$ 12,387	$ 12,382
Provision charged (credited) to expense	$ 575	$ 425	$ 475	475	$ 600	$ 570	$ 500	450	$ 350	$ 370	$ 300	200	1,950	2,120	1,220
Losses charged off													(2,157)	(1,466)	(1,412)
Recoveries													233	240	197
Allowance for loan losses, End of period	13,307				13,281				12,387				13,307	13,281	12,387
Allowance for loan losses, individually evaluated for impairment, Ending balance																$ 127	$ 100	$ 100
Allowance for loan losses, collectively evaluated for impairment, Ending balance																13,180	13,181	12,287
Total allowance for loan losses	13,307			13,281	13,281			12,387	12,387			12,382	13,307	13,281	12,387	13,307	13,281	12,387
Loans, individually evaluated for impairment, Ending balance																7,660	8,315	3,607
Loans, collectively evaluated for impairment, Ending balance																1,481,288	1,488,941	1,183,106
Total loans receivable																1,488,948	1,497,256	1,186,713
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period				8,426				7,704				7,358	8,426	7,704	7,358
Provision charged (credited) to expense													322	914	483
Losses charged off													(202)	(204)	(161)
Recoveries													28	12	24
Allowance for loan losses, End of period	8,574				8,426				7,704				8,574	8,426	7,704
Allowance for loan losses, individually evaluated for impairment, Ending balance																	100	100
Allowance for loan losses, collectively evaluated for impairment, Ending balance																8,574	8,326	7,604
Total allowance for loan losses	8,574			8,426	8,426			7,704	7,704			7,358	8,574	8,426	7,704	8,574	8,426	7,704
Loans, individually evaluated for impairment, Ending balance																6,228	7,178	2,064
Loans, collectively evaluated for impairment, Ending balance																713,528	681,299	475,863
Total loans receivable																719,756	688,477	477,927
Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period				1,548				1,761				2,303	1,548	1,761	2,303
Provision charged (credited) to expense													(79)	(57)	(271)
Losses charged off													(241)	(174)	(284)
Recoveries													4	18	13
Allowance for loan losses, End of period	1,232				1,548				1,761				1,232	1,548	1,761
Allowance for loan losses, individually evaluated for impairment, Ending balance																40
Allowance for loan losses, collectively evaluated for impairment, Ending balance																1,192	1,548	1,761
Total allowance for loan losses	1,232			1,548	1,548			1,761	1,761			2,303	1,232	1,548	1,761	1,232	1,548	1,761
Loans, individually evaluated for impairment, Ending balance																1,181	1,137	1,543
Loans, collectively evaluated for impairment, Ending balance																414,684	463,402	442,700
Total loans receivable																415,865	464,539	444,243
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period				3,307				2,922				2,721	3,307	2,922	2,721
Provision charged (credited) to expense													1,707	1,263	1,008
Losses charged off													(1,714)	(1,088)	(967)
Recoveries													201	210	160
Allowance for loan losses, End of period	3,501				3,307				2,922				3,501	3,307	2,922
Allowance for loan losses, individually evaluated for impairment, Ending balance																87
Allowance for loan losses, collectively evaluated for impairment, Ending balance																3,414	3,307	2,922
Total allowance for loan losses	$ 3,501			$ 3,307	$ 3,307			$ 2,922	$ 2,922			$ 2,721	$ 3,501	$ 3,307	$ 2,922	3,501	3,307	2,922
Loans, individually evaluated for impairment, Ending balance																251
Loans, collectively evaluated for impairment, Ending balance																353,076	344,240	264,543
Total loans receivable																$ 353,327	$ 344,240	$ 264,543