Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Schedule of Provision For Income Taxes

Income tax provision (benefit) for the years ended December 31, consists of the following (in thousands): 

	2022		2021		2020
Current:
Federal	$	139,423	$	134,111	$	4,877
State	20,367		14,508		2,614
Foreign	48,165		28,266		19,560
	207,955		176,885		27,051
Deferred:
Federal	(12,313)		(2,169)		(30,779)
State	(7,761)		(3,795)		(11,579)
Foreign	4,138		(1,708)		(1,721)
	(15,936)		(7,672)		(44,079)
	$	192,019	$	169,213	$	(17,028)

Schedule of Components Of Income Before Taxes

The components of Income (loss) before income taxes for the years ended December 31, were as follows (in thousands): 

	2022		2021		2020
Domestic	$	750,793	$	698,578	$	(81,522)
Foreign	180,440		120,659		65,792
	$	931,233	$	819,237	$	(15,730)

Schedule of Provision For Income Tax Rate To Statutory Rate Reconciliation

Income tax provision (benefit) differs from the amount that would be provided by applying the statutory U.S. corporate income tax rate for the years ended December 31, due to the following items (in thousands): 

	2022		2021		2020
Provision (benefit) at statutory rate	$	195,553	$	172,040	$	(3,303)
State taxes, net of federal benefit	19,223		16,568		822
Foreign rate differential	3,620		4,303		60
Foreign derived intangible income	(8,187)		—		—
Research and development credit	(18,809)		(8,046)		(8,442)
Unrecognized tax benefits including interest and penalties	(11,793)		(6,554)		(8,567)
Valuation allowance adjustments	6,714		(1,928)		9,675
State credits	(6,954)		(5,403)		(13,106)
Global intangible low-taxed income	1,607		1,143		1,480
Adjustments for previously accrued taxes	(6,318)		(8,500)		(4,951)
Executive compensation limitation	4,893		3,104		2,543
Other foreign inclusions	16,562		34		4,415
Other	(4,092)		2,452		2,346
Income tax provision (benefit)	$	192,019	$	169,213	$	(17,028)

Schedule of Principal Components Of The Company's Deferred Tax Assets And Liabilities

The principal components of the Company’s deferred income tax assets and liabilities as of December 31, include the following (in thousands):

	2022		2021
Deferred income tax assets:
Accruals not yet tax deductible	$	133,349	$	133,150
Stock compensation	11,616		10,908
Net operating loss and research & development tax credit carryforwards	63,517		60,401
Amortization of research and experimental costs	43,034		—
Other	55,800		66,245
	307,316		270,704
Valuation allowance	(40,878)		(33,596)
	266,438		237,108
Deferred income tax liabilities:
Depreciation, tax in excess of book	(49,889)		(66,301)
Pension and postretirement healthcare plan obligations	(58,843)		(67,741)
Withholding tax	(23,632)		(7,927)
Other	(28,561)		(21,478)
	(160,925)		(163,447)
	$	105,513	$	73,661

Schedule of Gross Operating Loss Carryforwards

The Company's gross state net operating loss carryforwards were as follows at December 31, (in thousands):

Year of Expiration	2022		2021
2031	$	219,726	$	236,624
2032	24		—
2033	46		46
2034	109		112
2035	553		7,882
2036	60		—
2037	195		433
2038	820		5,601
2039	9,375		13,581
2040	31,879		34,613
2041	2,135		3,486
2042	458		—
Indefinite	2,923		8,441
	$	268,303	$	310,819

Schedule of Changes In Gross Liability For Unrecognized Tax Benefits Excluding Interest And Penalties

The Company recognizes interest and penalties related to unrecognized tax benefits in Income tax provision (benefit). Changes in the Company’s gross liability for unrecognized tax benefits, excluding interest and penalties, were as follows (in thousands): 

	2022		2021
Unrecognized tax benefits, beginning of period	$	44,856	$	50,597
Increase in unrecognized tax benefits for tax positions taken in a prior period	373		35
Decrease in unrecognized tax benefits for tax positions taken in a prior period	(8,885)		(6,402)
Increase in unrecognized tax benefits for tax positions taken in the current period	3,158		3,188
Statute lapses	(2,753)		(2,340)
Settlements with taxing authorities	(4,720)		(222)
Unrecognized tax benefits, end of period	$	32,029	$	44,856