Acquisitions, Goodwill and Identified Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Acquisitions Goodwill And Identified Intangible Assets [Abstract]

Identified Intangible Assets

Identified intangible assets consisted of the following (in thousands):

	Average	March 31, 2020							December 31, 2019
	Life (Years)	Gross Assets		Accumulated Amortization			Net		Gross Assets		Accumulated Amortization			Net
Acquired patents / core technology	3-15	$	151,184	$	(137,086	)	$	14,098	$	151,184	$	(135,952	)	$	15,232
Existing technology	5-10		206,878		(139,590	)		67,288		206,878		(130,890	)		75,988
Customer contracts and related relationships	3-9		291,769		(186,173	)		105,596		291,769		(174,741	)		117,028
Trademarks/trade name	4-10		40,083		(17,299	)		22,784		40,083		(16,056	)		24,027
Non-competition agreements	1		2,231		(2,231	)		—		2,231		(2,231	)		—
Total intangible assets		$	692,145	$	(482,379	)	$	209,766	$	692,145	$	(459,870	)	$	232,275

Estimated Future Amortization Expense

As of March 31, 2020, the estimated future amortization expense of total intangible assets was as follows (in thousands):

2020 (remaining 9 months)	$	66,285
2021		81,084
2022		32,645
2023		21,766
2024		5,462
Thereafter		2,524
	$	209,766