BASIS OF PRESENTATION (Details) - USD ($)				3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 07, 2015	Jun. 19, 2015	Aug. 22, 2014	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2012
Other Commitments [Line Items]
Deferred revenue recognized from the terminated Telles joint venture								$ 38,885,000
Unrestricted cash, cash equivalents and investments				$ 17,894,000		$ 17,894,000
Period over which company's present capital resources are not sufficient to fund its planned operations						12 months
Proceeds from private placement offerings, net of issuance costs		$ 14,703,000	$ 24,913,000	$ 14,703	$ 24,913,000	$ 14,703,000	$ 24,913,000
Subsequent Event [Member] | Private Placement [Member] | Aspire [Member]
Other Commitments [Line Items]
Term of contractual service agreement	30 months
Other Commitment	$ 20,000,000