SPONSORS AND MANAGEMENT WARRANTS (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
	Feb. 28, 2011	Mar. 31, 2016	Dec. 31, 2015	Nov. 09, 2010
Sponsors and Management Warrants
Warrant liabilities		$ 277,940	$ 307,760
Sponsors Warrants
Sponsors and Management Warrants
Exercise price (in dollars per share)				$ 50.00
Warrants outstanding				1,916,667
Issuance of warrants to purchase common stock (in shares)		1,916,667
Warrant liabilities		$ 109,000	123,100
Management Warrants
Sponsors and Management Warrants
Issuance of warrants to purchase common stock (in shares)	2,862,687	2,862,687
Proceeds from issuance of Management warrants	$ 19,000
Warrant liabilities		$ 168,900	$ 184,700
Management Warrants | Chief Executive Officer
Sponsors and Management Warrants
Exercise price (in dollars per share)	$ 42.23
Management Warrants | President
Sponsors and Management Warrants
Exercise price (in dollars per share)	42.23
Management Warrants | Chief Financial Officer
Sponsors and Management Warrants
Exercise price (in dollars per share)	$ 54.50