ACQUISITIONS (Acquired Intangibles) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
2020 Acquisitions
Acquired finite-lived intangible assets
Estimated fair value of asset	$ 79,900
2020 Acquisitions | Acquired technology
Acquired finite-lived intangible assets
Weighted average useful life (in years)	4 years
Estimated fair value of asset	$ 4,600
2020 Acquisitions | Customer relationships
Acquired finite-lived intangible assets
Weighted average useful life (in years)	13 years
Estimated fair value of asset	$ 62,300
2020 Acquisitions | Trademarks and trade names
Acquired finite-lived intangible assets
Weighted average useful life (in years)	4 years
Estimated fair value of asset	$ 10,300
2020 Acquisitions | License agreements and other
Acquired finite-lived intangible assets
Weighted average useful life (in years)	3 months
Estimated fair value of asset	$ 2,700
2019 Acquisitions
Acquired finite-lived intangible assets
Estimated fair value of asset		$ 52,980
2019 Acquisitions | Acquired technology
Acquired finite-lived intangible assets
Weighted average useful life (in years)		8 years
Estimated fair value of asset		$ 9,160
2019 Acquisitions | Customer relationships
Acquired finite-lived intangible assets
Weighted average useful life (in years)		11 years
Estimated fair value of asset		$ 39,379
2019 Acquisitions | Trademarks and trade names
Acquired finite-lived intangible assets
Weighted average useful life (in years)		4 years
Estimated fair value of asset		$ 2,457
2019 Acquisitions | License agreements and other
Acquired finite-lived intangible assets
Weighted average useful life (in years)		1 year
Estimated fair value of asset		$ 1,984