ACQUIRED INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite Lived Intangible Assets

The following table presents the detail of acquired intangible assets as of the periods presented (in thousands):

	Balance at December 31, 2021
	Weighted Average Estimated Useful Life	Cost		Accumulated Amortization		Net
Technology assets	5 years	$	164,977	$	(65,619)	$	99,358
Customer assets	15 years	128,316		(19,244)		109,072
Trade name	9 years	53,051		(14,169)		38,882
Other	9 years	13,743		(4,006)		9,737
Total		$	360,087	$	(103,038)	$	257,049

	Balance at December 31, 2020
	Weighted Average Estimated Useful Life	Cost		Accumulated Amortization		Net
Technology assets	5 years	$	119,508	$	(43,084)	$	76,424
Customer assets	11 years	58,556		(10,796)		47,760
Trade name	6 years	18,529		(8,031)		10,498
Other	8 years	5,733		(2,803)		2,930
Total		$	202,326	$	(64,714)	$	137,612

The changes to the carrying value of intangible assets were as follows (in thousands):

	Year Ended December 31,
	2021		2020		2019
Acquired intangible assets, net, beginning of the period	$	137,612	$	69,079	$	77,102
Acquisitions	159,100		85,960		14,559
Amortization expense	(40,522)		(19,239)		(15,000)
Sale of asset group	—		—		(7,582)
Other adjustments	859		1,812		—
Acquired intangible assets, net, end of the period	$	257,049	$	137,612	$	69,079

Future Amortization Expense of Intangible Assets

The estimated future amortization expense of intangible assets as of December 31, 2021 is as follows (in thousands):

2022	$	42,908
2023	41,657
2024	38,679
2025	31,852
2026	18,201
Thereafter	83,752
Total	$	257,049