The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Bank Loans (Recorded Balances Of Loans and Amount Of Allowance Allocated Based Upon Impairment Method by Portfolio Segment) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 2,728		$ 187	$ 229
Allowance for Loan Losses, Collectively Evaluated for Impairment	33,138		29,600	23,694
Allowance for Loan Losses, Total	35,866	$ 34,050	29,787	23,923	$ 22,567	$ 20,731
Recorded Investment in Loans, Individually Evaluated for Impairment	35,060		519	5,845
Recorded Investment in Loans, Collectively Evaluated for Impairment	4,179,003		3,180,065	2,469,970
Recorded Investment in Loans, Total	4,214,063		3,180,584	2,475,815
Commercial And Industrial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	2,538			21
Allowance for Loan Losses, Collectively Evaluated for Impairment	27,278		24,748	19,276
Allowance for Loan Losses, Total	29,816	27,700	24,748	19,297	18,104	16,609
Recorded Investment in Loans, Individually Evaluated for Impairment	25,381
Recorded Investment in Loans, Collectively Evaluated for Impairment	1,399,290		1,216,656	1,010,810
Recorded Investment in Loans, Total	1,424,671		1,216,656	1,010,810
Securities Based Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,731		1,607	1,445
Allowance for Loan Losses, Total	1,731	1,605	1,607	1,445	1,288	1,099
Recorded Investment in Loans, Collectively Evaluated for Impairment	1,418,986		1,388,953	963,090
Recorded Investment in Loans, Total	1,418,986		1,388,953	963,090
Consumer [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	17		14	19
Allowance for Loan Losses, Collectively Evaluated for Impairment	90		91	104
Allowance for Loan Losses, Total	107	84	105	123	104	156
Recorded Investment in Loans, Individually Evaluated for Impairment	17		14	20
Recorded Investment in Loans, Collectively Evaluated for Impairment	36,609		36,832	20,249
Recorded Investment in Loans, Total	36,626		36,846	20,269
Residential Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	24		24	40
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,505		1,217	864
Allowance for Loan Losses, Total	1,529	1,330	1,241	904	857	787
Recorded Investment in Loans, Individually Evaluated for Impairment	511		182	5,283
Recorded Investment in Loans, Collectively Evaluated for Impairment	1,227,723		428,950	443,711
Recorded Investment in Loans, Total	1,228,234		429,132	448,994
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	512		264	286
Allowance for Loan Losses, Total	512	1,289	264	286	305	232
Recorded Investment in Loans, Individually Evaluated for Impairment	8,828			219
Recorded Investment in Loans, Collectively Evaluated for Impairment	74,800		92,623	19,834
Recorded Investment in Loans, Total	83,628		92,623	20,053
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	149		149	149
Allowance for Loan Losses, Collectively Evaluated for Impairment	134		141	116
Allowance for Loan Losses, Total	283	267	290	265	269	267
Recorded Investment in Loans, Individually Evaluated for Impairment	323		323	323
Recorded Investment in Loans, Collectively Evaluated for Impairment	13,833		12,152	12,276
Recorded Investment in Loans, Total	14,156		12,475	12,599
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	144		78
Allowance for Loan Losses, Total	144	118	78
Recorded Investment in Loans, Collectively Evaluated for Impairment	7,762		3,899
Recorded Investment in Loans, Total	7,762		3,899
Qualitative [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,744		1,454	1,603
Allowance for Loan Losses, Total	$ 1,744	$ 1,657	$ 1,454	$ 1,603	$ 1,640	$ 1,581