Bank Loans (Tables)

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

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

	September 30, 2018						December 31, 2017
	Balance			Percent			Balance			Percent
Commercial and industrial	$	3,127,435			37.5	%	$	2,437,938			34.8	%
Residential real estate		2,792,269			33.5			2,593,576			37.0
Securities-based loans		1,836,450			22.0			1,819,206			25.9
Commercial real estate		328,814			3.9			116,258			1.7
Construction and land		120,969			1.4			7,896			0.1
Home equity lines of credit		29,118			0.3			15,039			0.2
Other		109,571			1.4			24,508			0.3
Gross bank loans		8,344,626			100.0	%		7,014,421			100.0	%
Unamortized loan premium/(discount), net		(13,419	)					788
Loans in process		(2,755	)					(856	)
Unamortized loan fees, net		6,237						872
Allowance for loan losses		(80,700	)					(67,466	)
Bank loans, net	$	8,253,989					$	6,947,759

Activity In The Allowance For Loan Losses By Portfolio Segment

	Three Months Ended September 30, 2018
	Beginning Balance		Provision			Charge-offs		Recoveries		Ending Balance
Commercial and industrial	$	59,572	$	5,008		$	—	$	—	$	64,580
Residential real estate		9,328		1,165			—		—		10,493
Securities-based loans		1,928		(5	)		—		—		1,923
Commercial real estate		1,672		90			—		—		1,762
Construction and land		303		600			—		—		903
Home equity lines of credit		229		—			—		—		229
Other		13		(3	)		—		1		11
Qualitative		730		69			—		—		799
	$	73,775	$	6,924		$	—	$	1	$	80,700

	Nine Months Ended September 30, 2018
	Beginning Balance		Provision			Charge-offs			Recoveries		Ending Balance
Commercial and industrial	$	54,474	$	10,118		$	(12	)	$	—	$	64,580
Residential real estate		8,430		2,063			—			—		10,493
Securities-based loans		2,088		(165	)		—			—		1,923
Commercial real estate		1,520		242			—			—		1,762
Construction and land		100		803			—			—		903
Home equity lines of credit		162		65			—			2		229
Other		16		(5	)		(2	)		2		11
Qualitative		676		123			—			—		799
	$	67,466	$	13,244		$	(14	)	$	4	$	80,700

	Three Months Ended September 30, 2017
	Beginning Balance		Provision			Charge-offs		Recoveries		Ending Balance
Commercial and industrial	$	40,805	$	6,312		$	—	$	35	$	47,152
Residential real estate		5,569		1,566			—		—		7,135
Securities-based loans		3,600		(288	)		—		—		3,312
Commercial real estate		932		95			—		—		1,027
Home equity lines of credit		283		(13	)		—		1		271
Construction and land		224		9			—		—		233
Other		105		(3	)		—		1		103
Qualitative		2,684		312			—		—		2,996
	$	54,202	$	7,990		$	—	$	37	$	62,229

	Nine Months Ended September 30, 2017
	Beginning Balance		Provision			Charge-offs			Recoveries		Ending Balance
Commercial and industrial	$	35,127	$	12,239		$	(250	)	$	36	$	47,152
Residential real estate		2,660		4,475			—			—		7,135
Securities-based loans		3,094		218			—			—		3,312
Commercial real estate		1,363		2,367			(2,703	)		—		1,027
Home equity lines of credit		371		(102	)		—			2		271
Construction and land		232		1			—			—		233
Other		129		(27	)		—			1		103
Qualitative		2,187		809			—			—		2,996
	$	45,163	$	19,980		$	(2,953	)	$	39	$	62,229

Recorded Balance 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
Commercial and industrial	$	8,677	$	55,903	$	64,580	$	23,630	$	3,103,805	$	3,127,435
Residential real estate		24		10,469		10,493		328		2,791,941		2,792,269
Securities-based loans		—		1,923		1,923		—		1,836,450		1,836,450
Commercial real estate		—		1,762		1,762		—		328,814		328,814
Construction and land		—		903		903		—		120,969		120,969
Home equity lines of credit		—		229		229		231		28,887		29,118
Other		—		11		11		58		109,513		109,571
Qualitative		—		799		799		—		—		—
	$	8,701	$	71,999	$	80,700	$	24,247	$	8,320,379	$	8,344,626

	Allowance for Loan Losses						Recorded Investment in Loans
	Individually Evaluatedfor 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
Home equity lines of credit		20		142		162		184		14,855		15,039
Construction and land		—		100		100		—		7,896		7,896
Other		2		14		16		2		24,506		24,508
Qualitative		—		676		676		—		—		—
	$	9,105	$	58,361	$	67,466	$	29,213	$	6,985,208	$	7,014,421

Loans That Were Individually Evaluated For Impairment By Portfolio Segment

	September 30, 2018
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment with Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment
Commercial and industrial	$	23,630	$	196	$	23,434	$	23,630	$	8,677	$	23,783
Residential real estate		353		80		248		328		24		355
Home equity lines of credit		231		184		47		231		—		236
Other		731		26		32		58		—		60
Total	$	24,945	$	486	$	23,761	$	24,247	$	8,701	$	24,434

	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
Home equity lines of credit		184		—		184		184		20		300
Residential real estate		171		—		171		171		24		174
Other		677		—		2		2		2		5
Total	$	29,888	$	5,211	$	24,002	$	29,213	$	9,105	$	30,756

Aging Of The Recorded Investment In Past Due Loans

	As of September 30, 2018
	30 – 89 Days Past Due		90 or More Days Past Due		TotalPast Due		Current Balance		Total
Commercial and industrial	$	—	$	14,656	$	14,656	$	3,112,779	$	3,127,435
Residential real estate		3,745		184		3,929		2,788,340		2,792,269
Securities-based loans		—		—		—		1,836,450		1,836,450
Commercial real estate		—		—		—		328,814		328,814
Construction and land		—		—		—		120,969		120,969
Home equity lines of credit		47		—		47		29,071		29,118
Other		—		67		67		109,504		109,571
Total	$	3,792	$	14,907	$	18,699	$	8,325,927	$	8,344,626

	As of September 30, 2018*
	Non-Accrual		Restructured		Total
Commercial and industrial	$	14,694	$	8,936	$	23,630
Residential real estate		159		169		328
Home equity lines of credit		231		—		231
Other		58		—		58
Total	$	15,142	$	9,105	$	24,247

* There were no loans past due 90 days and still accruing interest at September 30, 2018.

	As of 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
Home equity lines of credit		184		—		184		14,855		15,039
Construction and land		—		—		—		7,896		7,896
Other		2		—		2		24,506		24,508
Total	$	19,961	$	—	$	19,961	$	6,994,460	$	7,014,421

	As of 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
Other		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.

Risk Category Of Loan Portfolio

	As of September 30, 2018
	Pass		SpecialMention		Substandard		Doubtful		Total
Commercial and industrial	$	3,069,237	$	34,488	$	23,710	$	—	$	3,127,435
Residential real estate		2,791,627		394		248		—		2,792,269
Securities-based loans		1,836,450		—		—		—		1,836,450
Commercial real estate		328,814		—		—		—		328,814
Construction and land		120,969		—		—		—		120,969
Home equity lines of credit		28,887		—		231		—		29,118
Other		109,513		—		47		11		109,571
Total	$	8,285,497	$	34,882	$	24,236	$	11	$	8,344,626

	As of December 31, 2017
	Pass		SpecialMention		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
Home equity lines of credit		14,855		—		184		—		15,039
Construction and land		7,896		—		—		—		7,896
Other		24,506		—		2		—		24,508
Total	$	6,960,969	$	22,752	$	30,700	$	—	$	7,014,421