Bank Loans (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

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

	December 31, 2019						December 31, 2018
	Balance			Percent			Balance			Percent
Commercial and industrial	$	3,438,953			35.3	%	$	3,304,234			38.5	%
Residential real estate		3,309,548			33.9			2,875,014			33.5
Securities-based loans		2,098,211			21.5			1,786,966			20.8
Commercial real estate		428,549			4.4			318,961			3.7
Construction and land		398,839			4.1			138,245			1.6
Home equity lines of credit		51,205			0.5			38,098			0.4
Other		27,311			0.3			120,129			1.5
Gross bank loans		9,752,616			100.0	%		8,581,647			100.0	%
Unamortized loan discount, net		(6,588	)					(12,155	)
Loans in process		(27,717	)					27,984
Unamortized loan fees, net		1,310						5,972
Allowance for loan losses		(95,579	)					(85,833	)
Loans held for investment, net	$	9,624,042					$	8,517,615

Activity In The Allowance For Loan Losses By Portfolio Segment

	Year Ended December 31, 2019
	Beginning Balance		Provision			Charge- offs			Recoveries		Ending Balance
Commercial and industrial	$	68,367	$	1,821		$	(239	)	$	—	$	69,949
Residential real estate		11,228		2,974			(41	)		92		14,253
Construction and land		1,241		3,372			—			—		4,613
Commercial real estate		1,778		1,786			—			—		3,564
Securities-based loans		1,978		383			—			—		2,361
Home equity lines of credit		310		129			—			3		442
Other		88		152			(106	)		60		194
Qualitative		843		(640	)		—			—		203
	$	85,833	$	9,977		$	(386	)	$	155	$	95,579

	Year Ended December 31, 2018
	Beginning Balance		Provision			Charge- offs			Recoveries		Ending Balance
Commercial and industrial	$	54,474	$	13,896		$	(12	)	$	9	$	68,367
Residential real estate		8,430		2,798			—			—		11,228
Securities-based loans		2,088		(110	)		—			—		1,978
Commercial real estate		1,520		258			—			—		1,778
Construction and land		100		1,141			—			—		1,241
Home equity lines of credit		162		145			—			3		310
Other		16		71			(2	)		3		88
Qualitative		676		167			—			—		843
	$	67,466	$	18,366		$	(14	)	$	15	$	85,833

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
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
Qualitative		—		203		203		—		—		—
	$	8,182	$	87,397	$	95,579	$	14,587	$	9,738,029	$	9,752,616

	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	$	8,678	$	59,689	$	68,367	$	23,677	$	3,280,557	$	3,304,234
Residential real estate		24		11,204		11,228		519		2,874,495		2,875,014
Securities-based loans		—		1,978		1,978		—		1,786,966		1,786,966
Commercial real estate		—		1,778		1,778		—		318,961		318,961
Construction and land		—		1,241		1,241		—		138,245		138,245
Home equity lines of credit		—		310		310		184		37,914		38,098
Other		1		87		88		21		120,108		120,129
Qualitative		—		843		843		—		—		—
	$	8,703	$	77,130	$	85,833	$	24,401	$	8,557,246	$	8,581,647

Loans That Were Individually Evaluated For Impairment By Portfolio Segment

	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

	December 31, 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	$	23,677	$	242	$	23,435	$	23,677	$	8,678	$	23,807
Residential real estate		544		352		167		519		24		275
Home equity lines of credit		184		184		—		184		—		184
Other		694		11		10		21		1		70
Total	$	25,099	$	789	$	23,612	$	24,401	$	8,703	$	24,336

Aging Of The Recorded Investment In Past Due Loans

	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

	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.

	December 31, 2018
	30 - 89 Days Past Due		90 or More Days Past Due		Total Past Due		Current Balance		Total
Commercial and industrial	$	—	$	14,656	$	14,656	$	3,289,578		3,304,234
Residential real estate		6,970		377		7,347		2,867,667		2,875,014
Securities-based loans		—		—		—		1,786,966		1,786,966
Commercial real estate		—		—		—		318,961		318,961
Construction and land		—		—		—		138,245		138,245
Home equity lines of credit		33		—		33		38,065		38,098
Other		—		134		134		119,995		120,129
Total	$	7,003	$	15,167	$	22,170	$	8,559,477	$	8,581,647

	December 31, 2018 *
	Non-accrual		Restructured		Total
Commercial and industrial	$	14,741	$	8,936	$	23,677
Residential real estate		352		167		519
Home equity lines of credit		184		—		184
Other		21		—		21
Total	$	15,298	$	9,103	$	24,401

* There were no loans past due 90 days and still accruing interest at December 31, 2018.

Risk Category Of Loan Portfolio

	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

	December 31, 2018
	Pass		Special Mention		Substandard		Doubtful		Total
Commercial and industrial	$	3,254,698	$	34,795	$	14,741	$	—	$	3,304,234
Residential real estate		2,874,495		—		519		—		2,875,014
Securities-based loans		1,786,966		—		—		—		1,786,966
Commercial real estate		318,961		—		—		—		318,961
Construction and land		138,245		—		—		—		138,245
Home equity lines of credit		37,914		—		184		—		38,098
Other		119,912		196		—		21		120,129
Total	$	8,531,191	$	34,991	$	15,444	$	21	$	8,581,647