Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Components Of Income Before Income Taxes

Income before income tax provision included the following components:

	Year Ended December 31,
(in thousands)	2021		2020		2019
Domestic	$	460,395	$	465,382	$	448,271
Foreign	54,959		28,543		74,312
Total	$	515,354	$	493,925	$	522,583

Components Of Provision For Income Taxes

The provision for income taxes was composed of the following:

	Year Ended December 31,
(in thousands)	2021		2020		2019
Current:
Federal	$	44,805	$	26,855	$	44,824
State	6,626		12,738		9,554
Foreign	43,786		51,377		31,421
Deferred:
Federal	(32,449)		(12,203)		(8,833)
State	(1,691)		(2,119)		(965)
Foreign	(350)		(16,610)		(4,713)
Total	$	60,727	$	60,038	$	71,288

Reconciliation Of U.S. Federal Statutory Tax Rate To Consolidated Effective Tax Rate

The reconciliation of the U.S. federal statutory tax rate to the consolidated effective tax rate was as follows:

	Year Ended December 31,
	2021		2020		2019
Federal statutory tax rate	21.0	%	21.0	%	21.0	%
Nondeductible expenses	2.8		0.7		0.5
State income taxes, net of federal benefit	0.6		1.6		1.5
Foreign rate differential	0.6		0.4		0.8
Valuation allowance release	—		(0.8)		(1.3)
Benefit from tax planning and entity structuring activities	(1.3)		(1.5)		—
Research and development credits	(3.1)		(3.2)		(2.2)
Foreign-derived intangible income deduction	(4.0)		(2.8)		(3.8)
Stock-based compensation	(5.4)		(3.6)		(3.1)
Other	0.6		0.4		0.2
	11.8	%	12.2	%	13.6	%

Components Of Deferred Tax Assets And Liabilities

The components of deferred tax assets and liabilities are as follows:

	December 31,
(in thousands)	2021		2020
Deferred tax assets:
Net operating loss carryforwards	$	47,235	$	47,551
Uncertain tax positions	35,574		18,565
Operating lease liabilities	30,634		34,803
Stock-based compensation	25,578		24,738
Employee benefits	12,902		13,290
Research and development credits	5,393		9,847
Allowance for doubtful accounts	3,522		3,193
Other	1,960		6,856
Valuation allowance	(14,936)		(15,398)
Total deferred tax assets	147,862		143,445
Deferred tax liabilities:
Other intangible assets	(173,895)		(147,960)
Operating lease right-of-use assets	(29,296)		(33,304)
Deferred revenue	(19,521)		(26,839)
Property and equipment	(5,785)		(6,052)
Accounting method change	(34)		(10,781)
Total deferred tax liabilities	(228,531)		(224,936)
Net deferred tax liabilities	$	(80,669)	$	(81,491)

Reconciliation Of Unrecognized Tax Benefits

The following is a reconciliation of the total amounts of unrecognized tax benefits:

	Year Ended December 31,
(in thousands)	2021		2020		2019
Unrecognized tax benefit as of January 1	$	24,075	$	49,085	$	22,827
Gross changes—acquisitions	—		(24,963)		26,914
Gross increases—tax positions in prior period	10,183		1,572		207
Gross decreases—tax positions in prior period	(2,281)		—		(1,743)
Gross increases—tax positions in current period	13,223		1,281		3,563
Reductions due to a lapse of the applicable statute of limitations	(3,226)		(3,502)		(2,230)
Changes due to currency fluctuation	(912)		994		(453)
Settlements	(1,421)		(392)		—
Unrecognized tax benefit as of December 31	$	39,641	$	24,075	$	49,085