COMMITMENTS AND CONTINGENCIES- Legal Proceedings (Details)		21 Months Ended
	Apr. 30, 2015 claim	Sep. 30, 2015 USD ($) payment shares	Jul. 27, 2015 shares	Mar. 09, 2015 shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 USD ($)
Loss Contingencies
Shares issued (in shares) | shares		635,832			0
Settlement agreement accrual					$ 15,000,000	$ 15,000,000
Reserve on amount due		$ 70,107,000			$ 66,405,000
PIPE Transaction
Loss Contingencies
Claims settled | claim	2
Maximum award of legal fees in lawsuit		750,000
Civil Action
Loss Contingencies
Settlement amount for investigative and administrative costs		$ 1,100,000
Interest rate, legal settlement		3.25%
Number of annual payments | payment		3
Payments related to Settlement Agreements		$ 9,100,000
Litigation settlement paid to Relator		700,000
PBM Services Payment Delay
Loss Contingencies
Loss contingency receivable		6,800,000
Reserve on amount due		$ 0
Class A Warrants
Loss Contingencies
Warrants issued (in shares) | shares			31,025	1,800,000
Class B Warrants
Loss Contingencies
Warrants issued (in shares) | shares			31,025	1,800,000
Series A Preferred Stock
Loss Contingencies
Shares issued (in shares) | shares			10,822	625,000