Loans and Allowance (Activity in Allowance for Loan Losses by Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	$ 13,281	$ 12,387
Provision charged (credited) to expense	475	450
Losses charged off	(443)	(372)
Recoveries	51	72
Allowance for loan losses, End of period	13,364	12,537
Allowance for loan losses, individually evaluated for impairment, Ending balance			$ 40	$ 100	$ 100
Allowance for loan losses, collectively evaluated for impairment, Ending balance			13,324	13,181	12,437
Total allowance for loan losses	13,281	12,387	13,364	13,281	12,537
Loans, individually evaluated for impairment, Ending balance			8,009	8,315	3,246
Loans, collectively evaluated for impairment, Ending balance			1,495,927	1,488,941	1,448,903
Total loans receivable			1,503,936	1,497,256	1,452,461
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	8,426	7,704
Provision charged (credited) to expense	26	408
Losses charged off	(55)	(138)
Recoveries	4
Allowance for loan losses, End of period	8,401	7,974
Allowance for loan losses, individually evaluated for impairment, Ending balance				100	100
Allowance for loan losses, collectively evaluated for impairment, Ending balance			8,401	8,326	7,874
Total allowance for loan losses	8,426	7,704	8,401	8,426	7,974
Loans, individually evaluated for impairment, Ending balance			6,830	7,178	1,835
Loans, collectively evaluated for impairment, Ending balance			687,976	681,299	693,903
Total loans receivable			694,806	688,477	696,050
Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	1,548	1,761
Provision charged (credited) to expense	37	(49)
Losses charged off	(41)	(20)
Recoveries	1	8
Allowance for loan losses, End of period	1,545	1,700
Allowance for loan losses, individually evaluated for impairment, Ending balance			40
Allowance for loan losses, collectively evaluated for impairment, Ending balance			1,505	1,548	1,700
Total allowance for loan losses	1,548	1,761	1,545	1,548	1,700
Loans, individually evaluated for impairment, Ending balance			1,179	1,137	1,411
Loans, collectively evaluated for impairment, Ending balance			457,319	463,402	475,011
Total loans receivable			458,498	464,539	476,422
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, Beginning of period	3,307	2,922
Provision charged (credited) to expense	412	91
Losses charged off	(347)	(214)
Recoveries	46	64
Allowance for loan losses, End of period	3,418	2,863
Allowance for loan losses, collectively evaluated for impairment, Ending balance			3,418	3,307	2,863
Total allowance for loan losses	$ 3,307	$ 2,922	3,418	3,307	2,863
Loans, collectively evaluated for impairment, Ending balance			350,632	344,240	279,989
Total loans receivable			$ 350,632	$ 344,240	$ 279,989