SPONSORS AND MANAGEMENT WARRANTS (Details) - USD ($)		1 Months Ended		12 Months Ended
	Oct. 07, 2016	Jan. 31, 2017	Feb. 28, 2011	Dec. 31, 2016	Dec. 31, 2015	Nov. 09, 2010
Sponsors and Management Warrants
Warrant liabilities				$ 332,170,000	$ 307,760,000
Issuance of management warrants				$ 1,000,000
Sponsors Warrants
Sponsors and Management Warrants
Exercise price (in dollars per share)						$ 50.00
Issuance of warrants to purchase common stock (in shares)				1,916,667
Warrant liabilities				$ 123,500,000	123,100,000
Warrants exercised				1,916,667
Management Warrants
Sponsors and Management Warrants
Underlying shares associated with warrant			2,862,687
Fair value exchange			$ 19,000,000
Issuance of warrants to purchase common stock (in shares)				2,862,687
Proceeds from issuance of Management warrants			$ 19,000,000
Warrant liabilities				$ 208,700,000	$ 184,700,000
Management Warrants | Chief Executive Officer
Sponsors and Management Warrants
Warrants exercised			42.23
Management Warrants | President | Subsequent Event
Sponsors and Management Warrants
Fair value exchange		$ 202,579
Proceeds from issuance of Management warrants		$ 202,579
Management Warrants | Chief Financial Officer
Sponsors and Management Warrants
Underlying shares associated with warrant	50,125
Exercise price (in dollars per share)	$ 112.08		$ 54.50
Fair value exchange	$ 1,000,000
Proceeds from issuance of Management warrants	$ 1,000,000