Bank Loans (Tables)

12 Months Ended

Dec. 31, 2017

Receivables [Abstract]

Schedule Of Balance And Associated Percentage Of Each Major Loan Category In Bank Loan Portfolio

	December 31, 2017						December 31, 2016
	Balance			Percent			Balance			Percent
Residential real estate	$	2,593,576			37.0	%	$	2,161,400			38.4	%
Commercial and industrial		2,437,938			34.8			1,710,399			30.3
Securities-based loans		1,819,206			25.9			1,614,033			28.6
Commercial real estate		116,258			1.7			78,711			1.4
Consumer		24,508			0.3			45,391			0.8
Home equity lines of credit		15,039			0.2			15,008			0.3
Construction and land		7,896			0.1			12,623			0.2
Gross bank loans		7,014,421			100.0	%		5,637,565			100.0	%
Unamortized loan premium/(discount), net		788						858
Loans in process		(856	)					(49	)
Unamortized loan fees, net		872						(2,021	)
Allowance for loan losses		(67,466	)					(45,163	)
Bank loans, net	$	6,947,759					$	5,591,190

Activity In The Allowance For Loan Losses By Portfolio Segment

	Year Ended December 31, 2017
	Beginning Balance		Provision			Charge- offs			Recoveries		Ending Balance
Commercial and industrial	$	35,127	$	19,666		$	(355	)	$	36	$	54,474
Securities-based loans		3,094		(1,006	)		—			—		2,088
Residential real estate		2,660		5,770			—			—		8,430
Commercial real estate		1,363		2,860			(2,703	)		—		1,520
Home equity lines of credit		371		(212	)		—			3		162
Construction and land		232		(132	)		—			—		100
Consumer		129		(115	)		—			2		16
Qualitative		2,187		(1,511	)		—			—		676
	$	45,163	$	25,320		$	(3,058	)	$	41	$	67,466

	Year Ended December 31, 2016
	Beginning Balance		Provision		Charge- offs			Recoveries		Ending Balance
Commercial and industrial	$	24,748	$	10,646	$	(267	)	$	—	$	35,127
Securities-based loans		1,607		1,487		—			—		3,094
Residential real estate		1,241		1,430		(13	)		2		2,660
Commercial real estate		264		1,090		—			9		1,363
Home equity lines of credit		290		81		—			—		371
Construction and land		78		154		—			—		232
Consumer		105		38		(16	)		2		129
Qualitative		1,454		733		—			—		2,187
	$	29,787	$	15,659	$	(296	)	$	13	$	45,163

Unpaid Principal Balances Of Loans And Amount Of Allowance Allocated Based Upon Impairment Method By Portfolio Segment

	Allowance for Loan Losses						Recorded Investment in Loans
	Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Total		Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Total
Residential real estate	$	24	$	8,406	$	8,430	$	171	$	2,593,405	$	2,593,576
Commercial and industrial		9,059		45,415		54,474		28,856		2,409,082		2,437,938
Securities-based loans		—		2,088		2,088		—		1,819,206		1,819,206
Commercial real estate		—		1,520		1,520		—		116,258		116,258
Consumer		2		14		16		2		24,506		24,508
Home equity lines of credit		20		142		162		184		14,855		15,039
Construction and land		—		100		100		—		7,896		7,896
Qualitative		—		676		676		—		—		—
	$	9,105	$	58,361	$	67,466	$	29,213	$	6,985,208	$	7,014,421

	Allowance for Loan Losses						Recorded Investment in Loans
	Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Total		Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Total
Residential real estate	$	24	$	2,636	$	2,660	$	178	$	2,161,222	$	2,161,400
Commercial and industrial		2,392		32,735		35,127		16,815		1,693,584		1,710,399
Securities-based loans	—			3,094		3,094	—			1,614,033		1,614,033
Commercial real estate		722		641		1,363		9,522		69,189		78,711
Consumer		6		123		129		6		45,385		45,391
Home equity lines of credit		231		140		371		413		14,595		15,008
Construction and land	—			232		232	—			12,623		12,623
Qualitative	—			2,187		2,187	—		—			—
	$	3,375	$	41,788	$	45,163	$	26,934	$	5,610,631	$	5,637,565

Loans That Were Individually Evaluated For Impairment By Portfolio Segment

	December 31, 2017
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment with Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment
Commercial and industrial	$	28,856	$	5,211	$	23,645	$	28,856	$	9,059	$	30,277
Consumer		677		—		2		2		2		5
Home equity lines of credit		184		—		184		184		20		300
Residential real estate		171		—		171		171		24		174
Total	$	29,888	$	5,211	$	24,002	$	29,213	$	9,105	$	30,756

	December 31, 2016
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment with Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment
Commercial and industrial	$	16,815	$	—	$	16,815	$	16,815	$	2,392	$	22,559
Commercial real estate		10,503	—			9,522		9,522		722		9,080
Consumer		833	—			6		6		6		9
Home equity lines of credit		413	—			413		413		231		413
Residential real estate		178	—			178		178		24		181
Total	$	28,742	$	—	$	26,934	$	26,934	$	3,375	$	32,242

Aging Of The Recorded Investment In Past Due Loans

	December 31, 2017
	30-89 Days Past Due		90 or More Days Past Due		Total Past Due		Current Balance		Total
Residential real estate	$	7,892	$	—	$	7,892	$	2,585,684		2,593,576
Commercial and industrial		11,883		—		11,883		2,426,055		2,437,938
Securities-based loans		—		—		—		1,819,206		1,819,206
Commercial real estate		—		—		—		116,258		116,258
Consumer		2		—		2		24,506		24,508
Home equity lines of credit		184		—		184		14,855		15,039
Construction and land		—		—		—		7,896		7,896
Total	$	19,961	$	—	$	19,961	$	6,994,460	$	7,014,421

	December 31, 2017 *
	Non-accrual		Restructured		Total
Commercial and industrial	$	19,904	$	8,952	$	28,856
Home equity lines of credit		184		—		184
Residential real estate		—		171		171
Consumer		2		—		2
Total	$	20,090	$	9,123	$	29,213

* There were no loans past due 90 days and still accruing interest at December 31, 2017.

	December 31, 2016
	30 – 89 Days Past Due		90 or More Days Past Due		Total Past Due		Current Balance		Total
Residential real estate	$	1,923	$	—	$	1,923	$	2,159,477		2,161,400
Commercial and industrial	—		—			—		1,710,399		1,710,399
Securities-based loans	—		—			—		1,614,033		1,614,033
Commercial real estate		9,522	—			9,522		69,189		78,711
Consumer	—			2		2		45,389		45,391
Home equity lines of credit		78		196		274		14,734		15,008
Construction and land	—		—			—		12,623		12,623
Total	$	11,523	$	198	$	11,721	$	5,625,844	$	5,637,565

	December 31, 2016 *
	Non-accrual		Restructured		Total
Commercial and industrial	$	16,815	$	—	$	16,815
Commercial real estate		—		9,522		9,522
Home equity lines of credit		413		—		413
Residential real estate		—		178		178
Consumer		6		—		6
Total	$	17,234	$	9,700	$	26,934

* There were no loans past due 90 days and still accruing interest at December 31, 2016.

Risk Category Of Loan Portfolio

	December 31, 2017
	Pass		Special Mention		Substandard		Doubtful		Total
Residential real estate	$	2,593,096	$	309	$	171	$	—	$	2,593,576
Commercial and industrial		2,385,152		22,443		30,343		—		2,437,938
Securities-based loans		1,819,206		—		—		—		1,819,206
Commercial real estate		116,258		—		—		—		116,258
Consumer		24,506		—		2		—		24,508
Home equity lines of credit		14,855		—		184		—		15,039
Construction and land		7,896		—		—		—		7,896
Total	$	6,960,969	$	22,752	$	30,700	$	—	$	7,014,421

	December 31, 2016
	Pass		Special Mention		Substandard		Doubtful		Total
Residential real estate	$	2,161,223	$	—	$	177	$	—		2,161,400
Commercial and industrial		1,652,211		27,905		30,283	—			1,710,399
Securities-based loans		1,614,033	—		—		—			1,614,033
Commercial real estate		69,189	—			9,522	—			78,711
Consumer		45,385	—			6	—			45,391
Home equity lines of credit		14,595	—			413	—			15,008
Construction and land		12,623	—		—		—			12,623
Total	$	5,569,259	$	27,905	$	40,401	$	—	$	5,637,565