Bank Loans (Tables)

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

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

	June 30, 2020						December 31, 2019
	Balance			Percent			Balance			Percent
Commercial and industrial	$	4,149,307			39.2	%	$	3,438,953			35.3	%
Residential real estate		3,710,657			35.1			3,309,548			33.9
Securities-based loans		1,716,786			16.2			2,098,211			21.5
Commercial real estate		406,788			3.8			428,549			4.4
Construction and land		472,216			4.5			398,839			4.1
Home equity lines of credit		62,699			0.6			51,205			0.5
Other		55,844			0.6			27,311			0.3
Gross bank loans		10,574,297			100.0	%		9,752,616			100.0	%
Unamortized loan discount, net		(8,184	)					(6,588	)
Loans in process		(2,920	)					(27,717	)
Unamortized loan fees, net		941						1,310
Allowance for loan losses		(115,821	)					(95,579	)
Loans held for investment, net	$	10,448,313					$	9,624,042

Activity In The Allowance For Loan Losses By Portfolio Segment

	Three Months Ended June 30, 2020
	Beginning Balance		Provision			Charge-offs			Recoveries		Ending Balance
Commercial and industrial	$	59,962	$	5,691		$	(150	)	$	—	$	65,503
Residential real estate		19,985		4,058			—			—		24,043
Construction and land		10,953		2,122			—			—		13,075
Commercial real estate		8,165		2,482			—			—		10,647
Securities-based loans		2,915		(1,108	)		—			—		1,807
Home equity lines of credit		539		(40	)		—			—		499
Other		283		(37	)		—			1		247
	$	102,802	$	13,168		$	(150	)	$	1	$	115,821

	Six Months Ended June 30, 2020
	Beginning Balance		CECL Adoption			Provision			Charge-offs			Recoveries		Ending Balance
Commercial and industrial	$	69,949	$	(19,940	)	$	15,646		$	(152	)	$	—	$	65,503
Residential real estate		14,253		3,499			6,291			—			—		24,043
Construction and land		4,613		2,674			5,788			—			—		13,075
Commercial real estate		3,564		791			6,292			—			—		10,647
Securities-based loans		2,361		1,346			(1,900	)		—			—		1,807
Home equity lines of credit		442		39			17			—			1		499
Other		194		58			12			(18	)		1		247
Unallocated		203		(203	)		—			—			—		—
	$	95,579	$	(11,736	)	$	32,146		$	(170	)	$	2	$	115,821

	Three Months Ended June 30, 2019
	Beginning Balance		Provision		Charge-offs			Recoveries		Ending Balance
Commercial and industrial	$	68,566	$	743	$	(46	)	$	—	$	69,263
Residential real estate		11,585		457		—			—		12,042
Securities-based loans		2,227		84		—			—		2,311
Commercial real estate		2,421		57		—			—		2,478
Construction and land		1,724		678		—			—		2,402
Home equity lines of credit		372		49		—			—		421
Other		146		40		(8	)		1		179
Unallocated		1,131		245		—			—		1,376
	$	88,172	$	2,353	$	(54	)	$	1	$	90,472

	Six Months Ended June 30, 2019
	Beginning Balance		Provision		Charge-offs			Recoveries		Ending Balance
Commercial and industrial	$	68,367	$	954	$	(58	)	$	—	$	69,263
Residential real estate		11,228		727		—			87		12,042
Securities-based loans		1,978		333		—			—		2,311
Commercial real estate		1,778		700		—			—		2,478
Construction and land		1,241		1,161		—			—		2,402
Home equity lines of credit		310		110		—			1		421
Other		88		118		(52	)		25		179
Unallocated		843		533		—			—		1,376
	$	85,833	$	4,636	$	(110	)	$	113	$	90,472

Recorded 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
Commercial and industrial	$	8,158	$	57,345	$	65,503	$	12,940	$	4,136,367	$	4,149,307
Residential real estate		24		24,019		24,043		1,410		3,709,247		3,710,657
Securities-based loans		—		1,807		1,807		—		1,716,786		1,716,786
Commercial real estate		—		10,647		10,647		—		406,788		406,788
Construction and land		—		13,075		13,075		—		472,216		472,216
Home equity lines of credit		—		499		499		—		62,699		62,699
Other		—		247		247		—		55,844		55,844
	$	8,182	$	107,639	$	115,821	$	14,350	$	10,559,947	$	10,574,297

	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	$	8,158	$	61,791	$	69,949	$	12,991	$	3,425,962	$	3,438,953
Residential real estate		24		14,229		14,253		1,412		3,308,136		3,309,548
Securities-based loans		—		2,361		2,361		—		2,098,211		2,098,211
Commercial real estate		—		3,564		3,564		—		428,549		428,549
Construction and land		—		4,613		4,613		—		398,839		398,839
Home equity lines of credit		—		442		442		184		51,021		51,205
Other		—		194		194		—		27,311		27,311
Unallocated		—		203		203		—		—		—
	$	8,182	$	87,397	$	95,579	$	14,587	$	9,738,029	$	9,752,616

Loans That Were Individually Evaluated For Impairment By Portfolio Segment

	June 30, 2020
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment with Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment
Commercial and industrial	$	12,940	$	—	$	12,940	$	12,940	$	8,158	$	12,940
Residential real estate		1,410		1,249		161		1,410		24		1,411
Home equity lines of credit		—		—		—		—		—		61
Other		150		—		—		—		—		—
Total	$	14,500	$	1,249	$	13,101	$	14,350	$	8,182	$	14,412

	December 31, 2019
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment with Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment
Commercial and industrial	$	12,991	$	51	$	12,940	$	12,991	$	8,158	$	14,172
Residential real estate		1,412		1,412		—		1,412		24		1,231
Home equity lines of credit		184		184		—		184		—		184
Other		150		—		—		—		—		—
Total	$	14,737	$	1,647	$	12,940	$	14,587	$	8,182	$	15,587

Aging Of The Recorded Investment In Past Due Loans

	As of June 30, 2020
	30 – 89 Days Past Due		90 or More Days Past Due		Total Past Due		Current Balance		Total
Commercial and industrial	$	—	$	12,940	$	12,940	$	4,136,367	$	4,149,307
Residential real estate		17,714		1,249		18,963		3,691,694		3,710,657
Securities-based loans		—		—		—		1,716,786		1,716,786
Commercial real estate		—		—		—		406,788		406,788
Construction and land		—		—		—		472,216		472,216
Home equity lines of credit		101		—		101		62,598		62,699
Other		—		—		—		55,844		55,844
Total	$	17,815	$	14,189	$	32,004	$	10,542,293	$	10,574,297

	As of June 30, 2020*
	Non-Accrual		Restructured		Nonperforming loans with no allowance		Total
Commercial and industrial	$	12,940	$	—	$	—	$	12,940
Residential real estate		—		161		1,249		1,410
Total	$	12,940	$	161	$	1,249	$	14,350

* There were no loans past due 90 days and still accruing interest at June 30, 2020.

	As of December 31, 2019
	30 – 89 Days Past Due		90 or More Days Past Due		Total Past Due		Current Balance		Total
Commercial and industrial	$	—	$	12,940	$	12,940	$	3,426,013	$	3,438,953
Residential real estate		10,476		1,249		11,725		3,297,823		3,309,548
Securities-based loans		—		—		—		2,098,211		2,098,211
Commercial real estate		—		—		—		428,549		428,549
Construction and land		—		—		—		398,839		398,839
Home equity lines of credit		83		184		267		50,938		51,205
Other		5		—		5		27,306		27,311
Total	$	10,564	$	14,373	$	24,937	$	9,727,679	$	9,752,616

	As of December 31, 2019*
	Non-Accrual		Restructured		Total
Commercial and industrial	$	12,940	$	—	$	12,940
Residential real estate		1,249		163		1,412
Home equity lines of credit		184		—		184
Total	$	14,373	$	163	$	14,536

* There were no loans past due 90 days and still accruing interest at December 31, 2019.

Risk Category Of Loan Portfolio

	As of June 30, 2020
	Pass		Special Mention		Substandard		Doubtful		Total
Commercial and industrial	$	3,926,827	$	158,513	$	51,027	$	12,940	$	4,149,307
Residential real estate		3,709,274		134		—		1,249		3,710,657
Securities-based loans		1,716,786		—		—		—		1,716,786
Commercial real estate		405,471		1,173		144		—		406,788
Construction and land		438,555		33,661		—		—		472,216
Home equity lines of credit		61,831		868		—		—		62,699
Other		55,844		—		—		—		55,844
Total	$	10,314,588	$	194,349	$	51,171	$	14,189	$	10,574,297

	As of December 31, 2019
	Pass		Special Mention		Substandard		Doubtful		Total
Commercial and industrial	$	3,365,800	$	48,241	$	11,972	$	12,940	$	3,438,953
Residential real estate		3,307,719		417		1,412		—		3,309,548
Securities-based loans		2,098,211		—		—		—		2,098,211
Commercial real estate		427,963		586		—		—		428,549
Construction and land		398,839		—		—		—		398,839
Home equity lines of credit		51,021		—		184		—		51,205
Other		27,311		—		—		—		27,311
Total	$	9,676,864	$	49,244	$	13,568	$	12,940	$	9,752,616

Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis

	Term Loans Amortized Cost Basis by Origination Year – June 30, 2020
	2020		2019		2018		2017		2016		Prior		Revolving Loans Amortized Cost Basis		Total
Commercial and industrial:
Pass	$	368,449	$	68,674	$	2,422,517	$	8,699	$	21,647	$	35,096	$	1,001,745	$	3,926,827
Special Mention		—		—		156,946		—		—		—		1,567		158,513
Substandard		—		—		41,977		—		—		28		9,022		51,027
Doubtful		—		—		—		12,940		—		—		—		12,940
	$	368,449	$	68,674	$	2,621,440	$	21,639	$	21,647	$	35,124	$	1,012,334	$	4,149,307
Residential real estate:
Pass	$	893,802	$	1,037,080	$	444,563	$	355,418	$	324,468	$	653,943	$	—	$	3,709,274
Special Mention		—		—		—		—		—		134		—		134
Substandard		—		—		—		—		—		—		—		—
Doubtful		—		—		—		149		—		1,100		—		1,249
	$	893,802	$	1,037,080	$	444,563	$	355,567	$	324,468	$	655,177	$	—	$	3,710,657
Securities-based loans:
Pass	$	15,217	$	102,590	$	1,614	$	140	$	300	$	22,993	$	1,573,932	$	1,716,786
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Doubtful		—		—		—		—		—		—		—		—
	$	15,217	$	102,590	$	1,614	$	140	$	300	$	22,993	$	1,573,932	$	1,716,786
Commercial real estate:
Pass	$	74,126	$	154,844	$	44,272	$	54,879	$	19,175	$	57,186	$	989	$	405,471
Special Mention		—		—		—		—		1,173		—		—		1,173
Substandard		—		—		144		—		—		—		—		144
Doubtful		—		—		—		—		—		—		—		—
	$	74,126	$	154,844	$	44,416	$	54,879	$	20,348	$	57,186	$	989	$	406,788
Construction and land:
Pass	$	25,968	$	205,501	$	123,863	$	65,126	$	7,484	$	1,542	$	9,071	$	438,555
Special Mention		—		—		33,661		—		—		—		—		33,661
Substandard		—		—		—		—		—		—		—		—
Doubtful		—		—		—		—		—		—		—		—
	$	25,968	$	205,501	$	157,524	$	65,126	$	7,484	$	1,542	$	9,071	$	472,216
Home equity lines of credit:
Pass	$	—	$	—	$	—	$	—	$	—	$	—	$	61,831	$	61,831
Special Mention		—		—		—		—		—		—		868		868
Substandard		—		—		—		—		—		—		—		—
Doubtful		—		—		—		—		—		—		—		—
	$	—	$	—	$	—	$	—	$	—	$	—	$	62,699	$	62,699
Other:
Pass	$	—	$	—	$	6	$	—	$	1,006	$	51	$	54,781	$	55,844
Special Mention		—		—		—		—		—		—		—		—
Substandard		—		—		—		—		—		—		—		—
Doubtful		—		—		—		—		—		—		—		—
	$	—	$	—	$	6	$	—	$	1,006	$	51	$	54,781	$	55,844