Loans (Schedule of Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 39,308	$ 37,805
Unpaid Principal Balance	39,331	37,824
Related Allowance	1,254	1,590
Average Impaired Balance	36,376	35,646
Interest Income Recognized while impaired	1,584	2,232
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	464	243
Without a related allowance, Unpaid Principal Balance	464	243
Without a related allowance, Average Impaired Balance	266	259
Without a related allowance, Interest Income Recognized while impaired	10	13
With a related allowance, Recorded Investment	0	252
With a related allowance, Unpaid Principal Balance	0	252
With a related allowance, Related Allowance	0	252
With a related allowance, Average Impaired Balance	0	262
With a related allowance, Interest Income Recognized while impaired	0	0
Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	4,679	7,109
Without a related allowance, Unpaid Principal Balance	4,685	7,111
Without a related allowance, Average Impaired Balance	2,714	5,149
Without a related allowance, Interest Income Recognized while impaired	129	265
With a related allowance, Recorded Investment	6,737	2,436
With a related allowance, Unpaid Principal Balance	6,737	2,436
With a related allowance, Related Allowance	161	125
With a related allowance, Average Impaired Balance	6,746	2,451
With a related allowance, Interest Income Recognized while impaired	274	161
Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	9,684	9,105
Without a related allowance, Unpaid Principal Balance	9,689	9,106
Without a related allowance, Average Impaired Balance	9,723	9,736
Without a related allowance, Interest Income Recognized while impaired	489	684
With a related allowance, Recorded Investment	194	1,338
With a related allowance, Unpaid Principal Balance	196	1,344
With a related allowance, Related Allowance	14	517
With a related allowance, Average Impaired Balance	263	676
With a related allowance, Interest Income Recognized while impaired	18	43
Land and Land Improvements [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	5,007	5,018
Without a related allowance, Unpaid Principal Balance	5,007	5,018
Without a related allowance, Average Impaired Balance	5,104	4,743
Without a related allowance, Interest Income Recognized while impaired	112	329
With a related allowance, Recorded Investment	1,077	1,464
With a related allowance, Unpaid Principal Balance	1,078	1,464
With a related allowance, Related Allowance	430	524
With a related allowance, Average Impaired Balance	1,083	1,477
With a related allowance, Interest Income Recognized while impaired	54	74
Construction [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	0	0
Without a related allowance, Unpaid Principal Balance	0	0
Without a related allowance, Average Impaired Balance	0	0
Without a related allowance, Interest Income Recognized while impaired	0	0
With a related allowance, Recorded Investment	0	0
With a related allowance, Unpaid Principal Balance	0	0
With a related allowance, Related Allowance	0	0
With a related allowance, Average Impaired Balance	0	0
With a related allowance, Interest Income Recognized while impaired	0	0
Non-Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	3,602	4,190
Without a related allowance, Unpaid Principal Balance	3,612	4,199
Without a related allowance, Average Impaired Balance	3,332	4,214
Without a related allowance, Interest Income Recognized while impaired	152	240
With a related allowance, Recorded Investment	2,989	1,717
With a related allowance, Unpaid Principal Balance	2,989	1,718
With a related allowance, Related Allowance	540	158
With a related allowance, Average Impaired Balance	2,263	1,691
With a related allowance, Interest Income Recognized while impaired	100	100
Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	3,510	3,555
Without a related allowance, Unpaid Principal Balance	3,509	3,554
Without a related allowance, Average Impaired Balance	3,514	3,592
Without a related allowance, Interest Income Recognized while impaired	167	228
With a related allowance, Recorded Investment	829	838
With a related allowance, Unpaid Principal Balance	829	839
With a related allowance, Related Allowance	109	14
With a related allowance, Average Impaired Balance	831	845
With a related allowance, Interest Income Recognized while impaired	49	57
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	523	523
Without a related allowance, Unpaid Principal Balance	523	523
Without a related allowance, Average Impaired Balance	523	523
Without a related allowance, Interest Income Recognized while impaired	29	35
With a related allowance, Recorded Investment	0	0
With a related allowance, Unpaid Principal Balance	0	0
With a related allowance, Related Allowance	0	0
With a related allowance, Average Impaired Balance	0	0
With a related allowance, Interest Income Recognized while impaired	0	0
Mortgage Warehouse Lines [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	0	0
Without a related allowance, Unpaid Principal Balance	0	0
Without a related allowance, Average Impaired Balance	0	0
Without a related allowance, Interest Income Recognized while impaired	0	0
With a related allowance, Recorded Investment	0	0
With a related allowance, Unpaid Principal Balance	0	0
With a related allowance, Related Allowance	0	0
With a related allowance, Average Impaired Balance	0	0
With a related allowance, Interest Income Recognized while impaired	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	13	17
Without a related allowance, Unpaid Principal Balance	13	17
Without a related allowance, Average Impaired Balance	14	28
Without a related allowance, Interest Income Recognized while impaired	1	3
With a related allowance, Recorded Investment	0	0
With a related allowance, Unpaid Principal Balance	0	0
With a related allowance, Related Allowance	0	0
With a related allowance, Average Impaired Balance	0	0
With a related allowance, Interest Income Recognized while impaired	0	0
Total Without a Related Allowance
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	27,482	29,760
Without a related allowance, Unpaid Principal Balance	27,502	29,771
Without a related allowance, Average Impaired Balance	25,190	28,244
Without a related allowance, Interest Income Recognized while impaired	1,089	1,797
Total With a Related Allowance
Financing Receivable, Impaired [Line Items]
With a related allowance, Recorded Investment	11,826	8,045
With a related allowance, Unpaid Principal Balance	11,829	8,053
With a related allowance, Related Allowance	1,254	1,590
With a related allowance, Average Impaired Balance	11,186	7,402
With a related allowance, Interest Income Recognized while impaired	495	435
Total Commercial
Financing Receivable, Impaired [Line Items]
Recorded Investment	27,842	26,965
Unpaid Principal Balance	27,856	26,974
Related Allowance	605	1,418
Average Impaired Balance	25,899	24,753
Interest Income Recognized while impaired	1,086	1,569
Total Residential Real Estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,453	10,823
Unpaid Principal Balance	11,462	10,833
Related Allowance	649	172
Average Impaired Balance	10,463	10,865
Interest Income Recognized while impaired	497	660
Total Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment	13	17
Unpaid Principal Balance	13	17
Related Allowance	0	0
Average Impaired Balance	14	28
Interest Income Recognized while impaired	$ 1	$ 3

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