Bank Loans (Activity In The Allowance For Loan Losses By Portfolio Segment) (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 [Line Items]
Beginning Balance	$ 22,567	$ 14,131	$ 20,731	$ 12,668
Provision	1,416	2,968	3,262	4,878
Charge-offs	(69)		(116)	(472)
Recoveries	9	5	46	30
Ending Balance	23,923	17,104	23,923	17,104
Commercial And Industrial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	18,104	11,089	16,609	9,832
Provision	1,193	2,436	2,688	4,161
Charge-offs				(468)
Ending Balance	19,297	13,525	19,297	13,525
Consumer [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,392	800	1,255	892
Provision	176	137	313	49
Charge-offs				(4)
Ending Balance	1,568	937	1,568	937
Residential Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	857	473	787	408
Provision	114	90	229	154
Charge-offs	(69)		(116)
Recoveries	2	1	4	2
Ending Balance	904	564	904	564
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	305	194	232	198
Provision	(26)	45	12	17
Recoveries	7	4	42	28
Ending Balance	286	243	286	243
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	269	290	267	174
Provision	(4)	(10)	(2)	106
Ending Balance	265	280	265	280
Qualitative [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,640	1,285	1,581	1,152
Provision	(37)	270	22	403
Ending Balance	$ 1,603	$ 1,555	$ 1,603	1,555
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance				12
Provision				$ (12)