Loans (Schedule of Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 37,367	$ 42,147	$ 37,647
Unpaid Principal Balance	37,380	42,159	37,659
Related Allowance	1,526	597	1,404
Average Impaired Balance	36,987	41,912	37,895
Interest Income Recognized while impaired	1,290	1,404	1,324
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	275	200	285
Without a related allowance, Unpaid Principal Balance	275	200	285
Without a related allowance, Average Impaired Balance	275	200	247
Without a related allowance, Interest Income Recognized while impaired	9	9	10
With a related allowance, Recorded Investment	0	0	0
With a related allowance, Unpaid Principal Balance	0	0	0
With a related allowance, Related Allowance	0	0	0
With a related allowance, Average Impaired Balance	0	0	0
With a related allowance, Interest Income Recognized while impaired	0	0	0
Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	806	5,446	520
Without a related allowance, Unpaid Principal Balance	806	5,446	520
Without a related allowance, Average Impaired Balance	806	5,446	534
Without a related allowance, Interest Income Recognized while impaired	44	211	31
With a related allowance, Recorded Investment	6,847	2,929	6,864
With a related allowance, Unpaid Principal Balance	6,847	2,929	6,864
With a related allowance, Related Allowance	375	89	347
With a related allowance, Average Impaired Balance	6,847	2,929	6,879
With a related allowance, Interest Income Recognized while impaired	268	112	269
Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	9,678	11,352	10,203
Without a related allowance, Unpaid Principal Balance	9,679	11,353	10,205
Without a related allowance, Average Impaired Balance	9,679	11,353	10,675
Without a related allowance, Interest Income Recognized while impaired	271	299	294
With a related allowance, Recorded Investment	1,300	1,841	1,311
With a related allowance, Unpaid Principal Balance	1,300	1,841	1,311
With a related allowance, Related Allowance	200	151	197
With a related allowance, Average Impaired Balance	1,300	1,841	1,327
With a related allowance, Interest Income Recognized while impaired	42	71	43
Land and Land Improvements [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	4,884	7,451	5,227
Without a related allowance, Unpaid Principal Balance	4,885	7,452	5,227
Without a related allowance, Average Impaired Balance	4,885	7,452	5,270
Without a related allowance, Interest Income Recognized while impaired	81	163	80
With a related allowance, Recorded Investment	2,065	1,152	2,066
With a related allowance, Unpaid Principal Balance	2,066	1,152	2,066
With a related allowance, Related Allowance	589	139	585
With a related allowance, Average Impaired Balance	2,066	1,152	2,074
With a related allowance, Interest Income Recognized while impaired	79	0	80
Construction [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	0	0	0
Without a related allowance, Unpaid Principal Balance	0	0	0
Without a related allowance, Average Impaired Balance	0	0	0
Without a related allowance, Interest Income Recognized while impaired	0	0	0
With a related allowance, Recorded Investment	0	0	0
With a related allowance, Unpaid Principal Balance	0	0	0
With a related allowance, Related Allowance	0	0	0
With a related allowance, Average Impaired Balance	0	0	0
With a related allowance, Interest Income Recognized while impaired	0	0	0
Non-Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	4,173	4,060	4,055
Without a related allowance, Unpaid Principal Balance	4,183	4,071	4,065
Without a related allowance, Average Impaired Balance	4,049	3,824	3,910
Without a related allowance, Interest Income Recognized while impaired	157	169	193
With a related allowance, Recorded Investment	2,298	2,337	2,055
With a related allowance, Unpaid Principal Balance	2,300	2,337	2,057
With a related allowance, Related Allowance	337	187	251
With a related allowance, Average Impaired Balance	2,041	2,337	1,851
With a related allowance, Interest Income Recognized while impaired	96	112	78
Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	3,626	3,740	3,640
Without a related allowance, Unpaid Principal Balance	3,625	3,739	3,639
Without a related allowance, Average Impaired Balance	3,625	3,739	3,693
Without a related allowance, Interest Income Recognized while impaired	172	178	175
With a related allowance, Recorded Investment	852	867	853
With a related allowance, Unpaid Principal Balance	852	868	853
With a related allowance, Related Allowance	25	31	24
With a related allowance, Average Impaired Balance	852	868	862
With a related allowance, Interest Income Recognized while impaired	43	43	44
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	524	710	524
Without a related allowance, Unpaid Principal Balance	523	709	523
Without a related allowance, Average Impaired Balance	523	709	523
Without a related allowance, Interest Income Recognized while impaired	24	32	22
With a related allowance, Recorded Investment	0	0	0
With a related allowance, Unpaid Principal Balance	0	0	0
With a related allowance, Related Allowance	0	0	0
With a related allowance, Average Impaired Balance	0	0	0
With a related allowance, Interest Income Recognized while impaired	0	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	39	62	44
Without a related allowance, Unpaid Principal Balance	39	62	44
Without a related allowance, Average Impaired Balance	39	62	50
Without a related allowance, Interest Income Recognized while impaired	4	5	5
With a related allowance, Recorded Investment	0	0	0
With a related allowance, Unpaid Principal Balance	0	0	0
With a related allowance, Related Allowance	0	0	0
With a related allowance, Average Impaired Balance	0	0	0
With a related allowance, Interest Income Recognized while impaired	0	0	0
Total Without a Related Allowance
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	24,005	33,021	24,498
Without a related allowance, Unpaid Principal Balance	24,015	33,032	24,508
Without a related allowance, Average Impaired Balance	23,881	32,785	24,902
Without a related allowance, Interest Income Recognized while impaired	762	1,066	810
Total With a Related Allowance
Financing Receivable, Impaired [Line Items]
With a related allowance, Recorded Investment	13,362	9,126	13,149
With a related allowance, Unpaid Principal Balance	13,365	9,127	13,151
With a related allowance, Related Allowance	1,526	597	1,404
With a related allowance, Average Impaired Balance	13,106	9,127	12,993
With a related allowance, Interest Income Recognized while impaired	528	338	514
Total Commercial
Financing Receivable, Impaired [Line Items]
Recorded Investment	25,855	30,371	26,476
Unpaid Principal Balance	25,858	30,373	26,478
Related Allowance	1,164	379	1,129
Average Impaired Balance	25,858	30,373	27,006
Interest Income Recognized while impaired	794	865	807
Total Residential Real Estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,473	11,714	11,127
Unpaid Principal Balance	11,483	11,724	11,137
Related Allowance	362	218	275
Average Impaired Balance	11,090	11,477	10,839
Interest Income Recognized while impaired	492	534	512
Total Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment	39	62	44
Unpaid Principal Balance	39	62	44
Related Allowance	0	0	0
Average Impaired Balance	39	62	50
Interest Income Recognized while impaired	$ 4	$ 5	$ 5