GOODWILL AND OTHER INTANGIBLE ASSETS (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) segment	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 469,433,000	$ 469,433,000	$ 469,433,000	$ 469,433,000	$ 469,433,000
Number of operating segments | segment			3
Goodwill impairment					$ 0
Amortization expense	$ 2,050,000	$ 2,337,000	$ 4,154,000	$ 4,728,000