Loans (Schedule of Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 46,127	$ 49,211	$ 48,399
Unpaid Principal Balance	46,306	49,227	48,416
Related Allowance	524	610	816
Average Impaired Balance	44,646	46,270	46,643
Interest Income Recognized while impaired	4,810	1,886	1,784
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	310	403	370
Without a related allowance, Unpaid Principal Balance	310	403	369
Without a related allowance, Average Impaired Balance	345	409	430
Without a related allowance, Interest Income Recognized while impaired	63	26	27
With a related allowance, Recorded Investment	0	50	125
With a related allowance, Unpaid Principal Balance	0	51	125
With a related allowance, Related Allowance	0	7	81
With a related allowance, Average Impaired Balance	0	12	38
With a related allowance, Interest Income Recognized while impaired	0	1	0
Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	5,420	5,808	5,362
Without a related allowance, Unpaid Principal Balance	5,421	5,807	5,361
Without a related allowance, Average Impaired Balance	5,450	5,879	5,309
Without a related allowance, Interest Income Recognized while impaired	586	211	192
With a related allowance, Recorded Investment	3,019	4,631	5,446
With a related allowance, Unpaid Principal Balance	3,020	4,631	5,446
With a related allowance, Related Allowance	46	256	287
With a related allowance, Average Impaired Balance	3,005	4,618	5,461
With a related allowance, Interest Income Recognized while impaired	409	214	216
Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	11,635	4,989	3,645
Without a related allowance, Unpaid Principal Balance	11,636	4,991	3,647
Without a related allowance, Average Impaired Balance	10,362	5,014	4,420
Without a related allowance, Interest Income Recognized while impaired	988	248	199
With a related allowance, Recorded Investment	2,063	2,879	2,860
With a related allowance, Unpaid Principal Balance	2,063	2,879	2,860
With a related allowance, Related Allowance	190	87	74
With a related allowance, Average Impaired Balance	2,074	733	1,003
With a related allowance, Interest Income Recognized while impaired	244	28	40
Land and Land Improvements [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	12,136	13,597	13,410
Without a related allowance, Unpaid Principal Balance	12,304	13,596	13,410
Without a related allowance, Average Impaired Balance	11,282	14,099	14,149
Without a related allowance, Interest Income Recognized while impaired	908	478	483
With a related allowance, Recorded Investment	0	817	898
With a related allowance, Unpaid Principal Balance	0	817	898
With a related allowance, Related Allowance	0	10	46
With a related allowance, Average Impaired Balance	0	865	933
With a related allowance, Interest Income Recognized while impaired	0	38	42
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	3,399	4,284	4,289
Without a related allowance, Unpaid Principal Balance	3,408	4,294	4,300
Without a related allowance, Average Impaired Balance	3,930	3,631	3,853
Without a related allowance, Interest Income Recognized while impaired	462	175	185
With a related allowance, Recorded Investment	2,695	2,234	2,627
With a related allowance, Unpaid Principal Balance	2,697	2,234	2,628
With a related allowance, Related Allowance	251	201	282
With a related allowance, Average Impaired Balance	2,714	2,076	2,093
With a related allowance, Interest Income Recognized while impaired	348	99	98
Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	3,794	7,786	7,589
Without a related allowance, Unpaid Principal Balance	3,792	7,791	7,594
Without a related allowance, Average Impaired Balance	3,820	7,817	7,761
Without a related allowance, Interest Income Recognized while impaired	554	310	241
With a related allowance, Recorded Investment	876	890	885
With a related allowance, Unpaid Principal Balance	876	890	886
With a related allowance, Related Allowance	37	49	46
With a related allowance, Average Impaired Balance	880	893	892
With a related allowance, Interest Income Recognized while impaired	134	45	45
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	710	808	809
Without a related allowance, Unpaid Principal Balance	709	808	808
Without a related allowance, Average Impaired Balance	709	186	265
Without a related allowance, Interest Income Recognized while impaired	93	11	14
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
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	70	35	84
Without a related allowance, Unpaid Principal Balance	70	35	84
Without a related allowance, Average Impaired Balance	75	38	36
Without a related allowance, Interest Income Recognized while impaired	21	2	2
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	37,474	37,710	35,558
Without a related allowance, Unpaid Principal Balance	37,650	37,725	35,573
Without a related allowance, Average Impaired Balance	35,973	37,073	36,223
Without a related allowance, Interest Income Recognized while impaired	3,675	1,461	1,343
Total With a Related Allowance
Financing Receivable, Impaired [Line Items]
With a related allowance, Recorded Investment	8,653	11,501	12,841
With a related allowance, Unpaid Principal Balance	8,656	11,502	12,843
With a related allowance, Related Allowance	524	610	816
With a related allowance, Average Impaired Balance	8,673	9,197	10,420
With a related allowance, Interest Income Recognized while impaired	1,135	425	441
Total Commercial
Financing Receivable, Impaired [Line Items]
Recorded Investment	34,583	33,174	32,116
Unpaid Principal Balance	34,754	33,175	32,116
Related Allowance	236	360	488
Average Impaired Balance	32,518	31,629	31,743
Interest Income Recognized while impaired	3,198	1,244	1,199
Total Residential Real Estate
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,474	16,002	16,199
Unpaid Principal Balance	11,482	16,017	16,216
Related Allowance	288	250	328
Average Impaired Balance	12,053	14,603	14,864
Interest Income Recognized while impaired	1,591	640	583
Total Consumer
Financing Receivable, Impaired [Line Items]
Recorded Investment	70	35	84
Unpaid Principal Balance	70	35	84
Related Allowance	0	0	0
Average Impaired Balance	75	38	36
Interest Income Recognized while impaired	$ 21	$ 2	$ 2