Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision for income taxes for the years ended December 31, 2024, 2023, and 2022, consisted of the following (in thousands):

	Year Ended December 31,
	2024		2023		2022
Current:
Federal	$	76,083	$	108,825	$	137,483
State	28,090		38,365		47,032
Foreign	20,400		34,885		40,204
Deferred:
Federal and state	(14,512)		(16,266)		13,542
Foreign	(3,988)		(372)		775
	$	106,073	$	165,437	$	239,036

Schedule of Income Before Provision for Income Taxes

Income before the provision for income taxes for the years ended December 31, 2024, 2023, and 2022, consisted of the following (in thousands):

	Year Ended December 31,
	2024		2023		2022
U.S.	$	332,547	$	485,291	$	780,624
Foreign	25,124		91,292		116,331
	$	357,671	$	576,583	$	896,955

Schedule of Difference of Income Taxes from Statutory Federal Income Tax Rates

The income taxes shown above varied from the statutory federal income tax rates for these periods as follows:

	Year Ended December 31,
	2024		2023		2022
Federal U.S. income tax rate	21.0	%	21.0	%	21.0	%
State income taxes, net of federal tax benefit	5.1		4.7		4.7
Permanent book/tax differences	0.7		0.4		0.3
Compensation book/tax differences	1.8		1.3		0.7
Non-U.S. income taxed at different rates, net of foreign tax credits	2.0		2.5		1.7
Federal tax credits	(1.0)		(0.8)		(1.0)
Tax impact of uncertain tax positions	(0.7)		(0.1)		0.1
Other, net	0.8		(0.3)		(0.9)
Effective tax rate	29.7	%	28.7	%	26.6	%

Schedule of Deferred Portion of Tax Provision (Benefit)

The deferred portion of the tax provision (benefit) consisted of the following (in thousands):

	Year Ended December 31,
	2024		2023		2022
Accrued expenses, deducted for tax when paid	$	(23,871)	$	(23,456)	$	41,953
Internal-use software and capitalized costs	(6,677)		(11,054)		(7,930)
Depreciation	(1,343)		(330)		4,608
Unrealized gains (losses) from investments held in employee deferred compensation trusts	16,578		19,139		(26,009)
Other, net	(3,187)		(937)		1,695
	$	(18,500)	$	(16,638)	$	14,317

Schedule of Components of Deferred Income Tax Amounts

The components of the deferred income tax amounts at December 31, 2024, and 2023, were as follows (in thousands):

	December 31,
	2024		2023
Deferred income tax assets
Employee deferred compensation and other benefit obligations	$	189,407	$	162,803
Deferred revenues, foreign royalties and management fees	72		375
Credits and net operating loss carryforwards	31,337		28,137
Stock-based compensation	7,440		6,318
Allowance for credit losses	5,909		6,825
Workers’ compensation	2,467		3,052
Operating lease liabilities	43,230		48,358
Other	17,010		17,698
Total deferred income tax assets	296,872		273,566
Deferred income tax liabilities
Amortization of intangible assets	(20,816)		(20,162)
Property and equipment basis differences	(757)		(8,612)
Unrealized gains from investments held in employee deferred compensation trusts	(43,709)		(27,131)
Right-of-use assets	(35,213)		(38,837)
Other	(12,230)		(13,258)
Total deferred income tax liabilities	(112,725)		(108,000)
Valuation allowance	(26,417)		(25,772)
Total deferred income tax assets, net	$	157,730	$	139,794

Schedule of Unrecognized Tax Benefits Roll Forward

The following table reconciles the total amounts of gross unrecognized tax benefits from January 1, 2022, through December 31, 2024 (in thousands): 

	2024		2023		2022
Balance at beginning of period	$	11,133	$	12,260	$	11,264
Gross increases—tax positions in prior years	1,085		27		1,528
Gross decreases—tax positions in prior years	0		0		(7)
Gross increases—tax positions in current year	902		769		1,533
Lapse of statute of limitations	(4,501)		(1,923)		(2,058)
Balance at end of period	$	8,619	$	11,133	$	12,260