GOODWILL AND INTANGIBLES ASSETS, NET - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Total Intangible Assets
Gross Amount	$ 385,257		$ 385,257		$ 260,185
Accumulated Amortization	(25,755)		(25,755)		(21,604)
Net Amount	359,502		359,502		238,581
Amortization related to finite-lived intangible assets	2,200	$ 800	4,100	$ 1,600
Customer Relationships
Finite-lived intangible assets:
Gross Amount	74,910		74,910		22,497
Accumulated Amortization	(14,551)		(14,551)		(11,575)
Net Amount	60,359		60,359		10,922
Copyrights & designs
Finite-lived intangible assets:
Gross Amount	9,542		9,542		0
Accumulated Amortization	(618)		(618)		0
Net Amount	8,924		8,924		0
Various Intangible Assets
Finite-lived intangible assets:
Gross Amount	13,378		13,378		12,088
Accumulated Amortization	(10,586)		(10,586)		(10,029)
Net Amount	2,792		2,792		2,059
Tradenames
Indefinite-lived intangible assets:
Indefinite-lived intangible assets	$ 287,427		$ 287,427		$ 225,600