Income Taxes (Tables) (annual)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The components of the Company's income tax expense for the years ended December 31, 2022, 2021 and 2020 are as follows:

	Year ended December 31,
	2022		2021		2020
	(dollars in thousands)
Current tax expense/(benefit)
Federal	$	32,574	$	92,390	$	13,840
State and local	2,799		21,842		5,060
Foreign	4,358		1,867		1,355
Total	$	39,731	$	116,099	$	20,255
Deferred tax expense/(benefit)
Federal	$	(23,194)	$	(9,860)	$	53,231
State and local	(5,705)		(4,861)		17,337
Foreign	(46)		661		(450)
Total	(28,945)		(14,060)		70,118
Total tax expense/(benefit)	$	10,786	$	102,039	$	90,373

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The reconciliations of the Company's federal statutory rate to the effective income tax rate for the years ended December 31, 2022, 2021, and 2020 are as follows:

	Year ended December 31,
	2022		2021		2020
Pre-tax net income at U.S. statutory rate	21.0	%	21.0	%	21.0	%
Nondeductible expenses	11.3		2.6		1.5
Change in valuation allowance	(3.2)		—		—
Tax credits	(4.6)		—		—
Stock compensation	(7.4)		(2.3)		(0.3)
State and foreign tax	(4.4)		5.0		7.3
Reversal of income attributable to non-controlling interests	2.9		(0.4)		0.7
Other, net	(1.5)		(0.8)		0.2
Total	14.1	%	25.1	%	30.4	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of the Company's deferred tax assets and liabilities as of December 31, 2022 and 2021 are as follows:

	As of December 31,
	2022		2021
	(dollars in thousands)
Deferred tax assets, net of valuation allowance
Net operating loss	$	12,061	$	14,649
Deferred compensation	29,967		34,342
Intangible assets	4,894		2,732
Bad debt reserves	2,929		759
Section 174 capitalization	9,460		—
Tax credits	1,057		3,241
Lease liability	17,871		24,373
Other	5,926		3,643
Total deferred tax assets	84,165		83,739
Valuation allowance	(1,932)		(4,226)
Deferred tax assets, net of valuation allowance	82,233		79,513
Deferred tax liabilities
Right-of-use on certain assets	(16,498)		(22,568)
Goodwill	(7,594)		(1,425)
Unrealized gains on investments	(5,070)		(30,393)
Other	(2,261)		(3,362)
Total deferred tax liabilities	(31,423)		(57,748)
Deferred tax assets/(liabilities), net	$	50,810	$	21,765

Summary of Operating Loss Carryforwards [Table Text Block]

The Company has the following net operating loss carryforwards at December 31, 2022:

Jurisdiction:	Federal	New York State	New York City	Hong Kong
Net operating loss (in millions)	$15.2	$16.0	$24.7	$11.7
Year of expiration	2030	2034	2034	Indefinite

Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]

The components of unrecognized tax benefits are as follows:

	As of December 31,
	2022		2021
	(dollars in thousands)
Beginning balance at January 1	$	—	$	299
Settlement of positions	—		(64)
Increases/(Decreases) due to prior year positions	—		(235)
Ending balance at December 31	$	—	$	—

Summary of Income Tax Examinations

The following are the major jurisdictions in which the Company has significant business operations and the earliest open tax year subject to examination in these jurisdictions:

Jurisdiction:	Federal	New York State	New York City	United Kingdom	Luxembourg	Malta	Germany	Switzerland
Tax Year	2018	2019	2019	2019	2018	2017	2018	2018