WARRANT LIABILITIES (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended			12 Months Ended
	Jun. 30, 2017	Oct. 07, 2016	Jun. 30, 2017	Jan. 31, 2017	Feb. 28, 2011	Dec. 31, 2017	Dec. 31, 2016	Oct. 04, 2017	Aug. 29, 2017	Jun. 16, 2017	Nov. 09, 2010
Sponsors and Management Warrants
Warrant liabilities							$ 332,170
Issuance of management warrants						$ 52,000	1,000
Sponsors Warrants
Sponsors and Management Warrants
Exercise price (in dollars per share)											$ 50.00
Warrants outstanding											1,916,667
Warrants exercised	1,136,517
Warrant liabilities							$ 332,200
Management Warrants
Sponsors and Management Warrants
Proceeds from issuance of Management warrants					$ 19,000
Management Warrants | Chief Executive Officer
Sponsors and Management Warrants
Underlying shares associated with warrant					2,367,985
Exercise price (in dollars per share)									$ 124.64
Total warrant price										$ 50,000
Number of shares called by warrants (in shares)										1,965,409
Number of shares of common stock under warrants exercised			1,614,803
Management Warrants | President
Sponsors and Management Warrants
Underlying shares associated with warrant					315,731
Exercise price (in dollars per share)					$ 42.23			$ 117.01
Total warrant price								$ 2,000
Number of shares called by warrants (in shares)								87,951
Number of shares donated to charitable trust				6,850
Number of shares issued as per warrant provision for which share settled				4,400
Warrants exercised				198,184
Management Warrants | Chief Financial Officer
Sponsors and Management Warrants
Underlying shares associated with warrant					178,971	98,549
Exercise price (in dollars per share)		$ 112.08			$ 54.50
Number of shares called by warrants (in shares)		50,125
Proceeds from issuance of Management warrants		$ 1,000