The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Amortized intangible assets
Gross Carrying Amount	$ 517,612		$ 517,612		$ 466,741
Accumulated Amortization	(144,798)		(144,798)		(122,432)
Net Value	372,814		372,814		344,309
Aggregate amortization expense	10,249	$ 9,686	$ 29,871	$ 30,020
Weighted Average
Amortized intangible assets
Amortization Period (in years)			14 years 4 months 24 days
Patents
Amortized intangible assets
Gross Carrying Amount	2,785		$ 2,785		2,861
Accumulated Amortization	(1,436)		(1,436)		(1,477)
Net Value	1,349		$ 1,349		1,384
Patents \| Weighted Average
Amortized intangible assets
Amortization Period (in years)			13 years 10 months 24 days
Acquired technology
Amortized intangible assets
Gross Carrying Amount	140,224		$ 140,224		111,854
Accumulated Amortization	(42,803)		(42,803)		(36,943)
Net Value	97,421		$ 97,421		74,911
Acquired technology \| Weighted Average
Amortized intangible assets
Amortization Period (in years)			11 years 6 months
Customer relationships
Amortized intangible assets
Gross Carrying Amount	312,905		$ 312,905		286,644
Accumulated Amortization	(71,872)		(71,872)		(56,714)
Net Value	241,033		$ 241,033		229,930
Customer relationships \| Weighted Average
Amortized intangible assets
Amortization Period (in years)			15 years 4 months 24 days
Trademarks and trade names
Amortized intangible assets
Gross Carrying Amount	45,194		$ 45,194		46,174
Accumulated Amortization	(21,544)		(21,544)		(17,437)
Net Value	23,650		$ 23,650		28,737
Trademarks and trade names \| Weighted Average
Amortized intangible assets
Amortization Period (in years)			6 years 10 months 24 days
License agreements and other
Amortized intangible assets
Gross Carrying Amount	16,504		$ 16,504		19,208
Accumulated Amortization	(7,143)		(7,143)		(9,861)
Net Value	$ 9,361		$ 9,361		$ 9,347
License agreements and other \| Weighted Average
Amortized intangible assets
Amortization Period (in years)			37 years 7 months 6 days