GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Oct. 02, 2017	Sep. 06, 2017
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 3,500,000
Excess purchase price over fair value of net assets acquired assigned to goodwill	102,003,000	$ 102,003,000
Goodwill and Intangible Asset Impairment	$ 3,500,000	$ 0	$ 0
Minimum
Finite-Lived Intangible Assets [Line Items]
Economic useful life	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Economic useful life	14 years
Novae
Finite-Lived Intangible Assets [Line Items]
Finite lived other intangible assets				$ 385,000,000
Value of business acquired - definite lived intangible asset				256,942,000
Indefinite lived intangible assets				94,748,000
Excess purchase price over fair value of net assets acquired assigned to goodwill				54,047,000
Contessa Limited
Finite-Lived Intangible Assets [Line Items]
Excess purchase price over fair value of net assets acquired assigned to goodwill					$ 1,000,000
Distribution networks | Novae
Finite-Lived Intangible Assets [Line Items]
Finite lived other intangible assets				$ 128,463,000