Allowance for Loan Losses (Allowance for Loan Losses Rollforward Analysis) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	$ 27,810	$ 27,043	$ 28,023	$ 27,886
Charge-offs	(355)	(267)	(676)	(1,490)
Recoveries	32	43	140	123
Provision	100	450	100	750
Allowance, Ending Balance	27,587	27,269	27,587	27,269
Reclassification of unallocated allowance [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Ending Balance	5,000		5,000
Commercial Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	8,331	6,547	8,202	8,022
Charge-offs	(200)	(32)	(400)	(977)
Recoveries	4	6	84	12
Provision	394	1,671	643	1,135
Allowance, Ending Balance	8,529	8,192	8,529	8,192
Commercial Construction & Development [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	1,229	269	1,300	383
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	455	225	384	111
Allowance, Ending Balance	1,684	494	1,684	494
Commercial & Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	7,803	8,470	7,987	7,835
Charge-offs	(44)	(115)	(51)	(311)
Recoveries	18	20	32	46
Provision	(767)	(487)	(958)	318
Allowance, Ending Balance	7,010	7,888	7,010	7,888
Commercial Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	17,363	15,286	17,489	16,240
Charge-offs	(244)	(147)	(451)	(1,288)
Recoveries	22	26	116	58
Provision	82	1,409	69	1,564
Allowance, Ending Balance	17,223	16,574	17,223	16,574
Residential Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	5,355	7,148	5,430	6,450
Charge-offs	(6)	(30)	(54)	(72)
Recoveries	2	0	4	35
Provision	54	(927)	25	(222)
Allowance, Ending Balance	5,405	6,191	5,405	6,191
Consumer Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	2,731	2,577	2,713	2,511
Charge-offs	(105)	(90)	(171)	(130)
Recoveries	8	17	20	30
Provision	49	73	121	166
Allowance, Ending Balance	2,683	2,577	2,683	2,577
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance, Beginning Balance	2,361	2,032	2,391	2,685
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(85)	(105)	(115)	(758)
Allowance, Ending Balance	$ 2,276	$ 1,927	$ 2,276	$ 1,927