GOODWILL AND OTHER INTANGIBLE ASSETS (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Amortized intangible assets:
Gross Carrying Amount	$ 309,830		$ 312,508
Accumulated Amortization	(62,931)		(57,604)
Net Value	246,899		254,904
Aggregate amortization expense	6,002	$ 2,818
Future estimated amortization expense
2019	18,142
2020	22,643
2021	21,831
2022	21,545
2023 and thereafter	$ 162,738
Weighted Average
Amortized intangible assets:
Amortization Period	13 years 2 months 12 days
Patents
Amortized intangible assets:
Gross Carrying Amount	$ 5,545		5,427
Accumulated Amortization	(4,754)		(5,294)
Net Value	$ 791		133
Patents | Weighted Average
Amortized intangible assets:
Amortization Period	1 year 10 months 24 days
Acquired technology
Amortized intangible assets:
Gross Carrying Amount	$ 90,867		92,389
Accumulated Amortization	(19,774)		(18,304)
Net Value	$ 71,093		74,085
Acquired technology | Weighted Average
Amortized intangible assets:
Amortization Period	13 years 6 months
Customer relationships
Amortized intangible assets:
Gross Carrying Amount	$ 178,142		179,597
Accumulated Amortization	(22,784)		(20,439)
Net Value	$ 155,358		159,158
Customer relationships | Weighted Average
Amortized intangible assets:
Amortization Period	14 years 3 months 18 days
Trademarks and trade names
Amortized intangible assets:
Gross Carrying Amount	$ 21,105		21,243
Accumulated Amortization	(7,928)		(5,914)
Net Value	$ 13,177		15,329
Trademarks and trade names | Weighted Average
Amortized intangible assets:
Amortization Period	7 years
License agreements and other
Amortized intangible assets:
Gross Carrying Amount	$ 14,171		13,852
Accumulated Amortization	(7,691)		(7,653)
Net Value	$ 6,480		$ 6,199
License agreements and other | Weighted Average
Amortized intangible assets:
Amortization Period	11 years 10 months 24 days