GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details)	3 Months Ended				12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Goodwill [Line Items]
Number of reportable segments (segment) | Segment					6
Goodwill impairment	$ 1,936,000	$ 78,169,000	$ 0	$ 0	$ 0	$ 80,105,000	$ 0
Amortization expense for intangible assets					$ 5,100,000	$ 5,300,000	$ 20,300,000
Minimum
Goodwill [Line Items]
Estimated useful live of other intangible assets					5 years
Maximum
Goodwill [Line Items]
Estimated useful live of other intangible assets					15 years