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Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in goodwill

The following table reflects the changes in goodwill for the periods ended December 31, 2020, December 31, 2019 and March 31, 2021:

			(in thousands)
Balance at December 31, 2018			$	832,521
Acquisitions			11,257
Foreign currency translation and other adjustments			(7,135)
Balance at December 31, 2019			$	836,643
Foreign currency translation			37,440
Balance at December 31, 2020			$	874,083
Foreign currency translation			(18,505)
Balance at March 31, 2021 (unaudited)			$	855,578

The following table reflects the changes in goodwill for the six months ended June 30, 2021:

			(in thousands)
Balance at December 31, 2020			$	874,083
Foreign currency translation			(13,587)
Balance at June 30, 2021			$	860,496

Intangible assets

Intangible assets, net consisted of the following at December 31, 2020, December 31, 2019 and March 31, 2021:

			December 31, 2020																		December 31, 2019
			Gross Carrying Amount						Accumulated Amortization						Net						Gross Carrying Amount						Accumulated Amortization						Net
			(in thousands)
Developed product technologies			$	127,057					$	(119,392)					$	7,665					$	124,792					$	(93,351)					$	31,441
Customer relationships			131,045						(111,336)						19,709						126,788						(83,545)						43,243
Trademarks			1,162						(1,162)						—						1,402						(1,312)						90
Total intangible assets, net			$	259,264					$	(231,890)					$	27,374					$	252,982					$	(178,208)					$	74,774

Intangible asset amortization expense

Intangible asset amortization expense was as follows:

			Year Ended December 31,
			2020						2019						2018
			(in thousands)
Intangible asset amortization expense			$	48,105					$	47,289					$	50,168

Amortization of acquired technologies included in cost of revenue relate to our subscription products as follows:

			Three Months Ended June 30,												Six Months Ended June 30,
			2021						2020						2021						2020
			(in thousands)
Amortization of acquired technologies			$	1,037					$	6,132					$	3,741					$	11,876

Estimated intangible asset amortization expense

As of December 31, 2020, we estimate aggregate intangible asset amortization expense to be as follows:

			Estimated Amortization
			(in thousands)
2021			$	19,182
2022			7,637
2023			555
2024			—
2025			—

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-Name Accounting Standards Codification
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