Loans and Allowance (Activity in Allowance for Loan Losses by Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	$ 13,435	$ 12,729	$ 13,281	$ 12,387
Provision charged (credited) to expense	425	570	1,375	1,520
Losses charged off	(499)	(340)	(1,416)	(1,080)
Recoveries	50	50	171	182
Allowance for loan losses, End of period	13,411	13,009	13,411	13,009
Allowance for loan losses, individually evaluated for impairment, Ending balance					$ 127	$ 100	$ 100
Allowance for loan losses, collectively evaluated for impairment, Ending balance					13,284	13,181	12,909
Total allowance for loan losses	13,435	12,729	13,281	12,387	13,411	13,281	13,009
Loans, individually evaluated for impairment, Ending balance					7,460	8,315	2,802
Loans, collectively evaluated for impairment, Ending balance					1,483,208	1,488,941	1,475,320
Total loans receivable					1,490,668	1,497,256	1,478,122
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	8,540	8,043	8,426	7,704
Provision charged (credited) to expense	134	133	332	600
Losses charged off	(69)	(25)	(167)	(165)
Recoveries	4		18	12
Allowance for loan losses, End of period	8,609	8,151	8,609	8,151
Allowance for loan losses, individually evaluated for impairment, Ending balance						100	100
Allowance for loan losses, collectively evaluated for impairment, Ending balance					8,609	8,326	8,051
Total allowance for loan losses	8,540	8,043	8,426	7,704	8,609	8,426	8,151
Loans, individually evaluated for impairment, Ending balance					6,026	7,178	1,662
Loans, collectively evaluated for impairment, Ending balance					710,975	681,299	676,767
Total loans receivable					717,001	688,477	678,429
Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	1,363	1,606	1,548	1,761
Provision charged (credited) to expense	36	59	(78)	(28)
Losses charged off	(42)	(67)	(115)	(144)
Recoveries	1	1	3	10
Allowance for loan losses, End of period	1,358	1,599	1,358	1,599
Allowance for loan losses, individually evaluated for impairment, Ending balance					40
Allowance for loan losses, collectively evaluated for impairment, Ending balance					1,318	1,548	1,599
Total allowance for loan losses	1,363	1,606	1,548	1,761	1,358	1,548	1,599
Loans, individually evaluated for impairment, Ending balance					1,180	1,137	1,140
Loans, collectively evaluated for impairment, Ending balance					414,534	463,402	469,278
Total loans receivable					415,714	464,539	470,418
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	3,532	3,080	3,307	2,922
Provision charged (credited) to expense	255	378	1,121	948
Losses charged off	(388)	(248)	(1,134)	(771)
Recoveries	45	49	150	160
Allowance for loan losses, End of period	3,444	3,259	3,444	3,259
Allowance for loan losses, individually evaluated for impairment, Ending balance					87
Allowance for loan losses, collectively evaluated for impairment, Ending balance					3,357	3,307	3,259
Total allowance for loan losses	$ 3,532	$ 3,080	$ 3,307	$ 2,922	3,444	3,307	3,259
Loans, individually evaluated for impairment, Ending balance					254
Loans, collectively evaluated for impairment, Ending balance					357,699	344,240	329,275
Total loans receivable					$ 357,953	$ 344,240	$ 329,275