Goodwill and Acquired Intangibles (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill during fiscal 2023 and 2022 were as follows:

	Gross Carrying Amount
	(In thousands)
Balance as of January 1, 2022	$	928,358
Goodwill resulting from acquisitions	456,323
Effect of foreign currency translation	(10,413)
Balance as of December 31, 2022	1,374,268
Goodwill resulting from acquisitions	160,083
Effect of foreign currency translation	1,494
Balance as of December 31, 2023	$	1,535,845

Acquired intangibles with finite lives (excluding goodwill), excluding intangibles fully amortized at end of prior fiscal year

Acquired intangibles as of December 31, 2023, were as follows, excluding intangibles that were fully amortized as of December 31, 2022:

	Gross Carrying Amount		Accumulated Amortization		Acquired Intangibles, Net
	(In thousands)
Existing technology	$	325,710	$	(141,659)	$	184,051
Agreements and relationships	198,259		(61,395)		136,864
Tradenames, trademarks and patents	13,460		(4,332)		9,128
Total acquired intangibles with definite lives	$	537,429	$	(207,386)	$	330,043
In-process technology	6,800		—		6,800
Total acquired intangibles	$	544,229	$	(207,386)	$	336,843

Acquired intangibles as of December 31, 2022, were as follows, excluding intangibles that were fully amortized as of January 1, 2022:

	Gross Carrying Amount		Accumulated Amortization		Acquired Intangibles, Net
	(In thousands)
Existing technology	$	479,796	$	(278,851)	$	200,945
Agreements and relationships	274,624		(137,847)		136,777
Tradenames, trademarks and patents	12,979		(2,884)		10,095
Total acquired intangibles with definite lives	$	767,399	$	(419,582)	$	347,817
In-process technology	6,800		—		6,800
Total acquired intangibles	$	774,199	$	(419,582)	$	354,617

Amortization of acquired intangibles

Amortization expense for fiscal 2023, 2022 and 2021, by consolidated income statement caption, was as follows:

	2023		2022		2021
	(In thousands)
Cost of product and maintenance	$	43,808	$	41,348	$	47,576
Amortization of acquired intangibles	18,162		18,470		19,640
Total amortization of acquired intangibles	$	61,970	$	59,818	$	67,216

Estimated amortization expense

As of December 31, 2023, the estimated amortization expense for intangible assets with definite lives was as follows for the following five fiscal years and thereafter:

	(In thousands)
2024	$	64,006
2025	51,277
2026	45,698
2027	43,184
2028	39,015
Thereafter	86,863
Total estimated amortization expense	$	330,043