COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Thousands				1 Months Ended	12 Months Ended	16 Months Ended	24 Months Ended
	Apr. 22, 2016	Dec. 17, 2015	Sep. 19, 2014	Nov. 30, 2016	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2016
Other Commitments [Line Items]
Legal fees sought		5
Martin Shkreli
Other Commitments [Line Items]
Legal fees paid In advance				$ 2,800	$ 1,800		$ 2,800
Contingent future legal fee advance payment				$ 2,000
Legal fees reimbursed from director and officer insurance carriers					700
Legal fees					5,200
Legal fees paid					$ 2,200
Donoghue v. Retrophin, Inc.
Other Commitments [Line Items]
Settlement amount			$ 2,025
Donoghue v. Retrophin, Inc. | Martin Shkreli
Other Commitments [Line Items]
Settlement amount			600
Retrophin, Inc. v. Shkreli, | Martin Shkreli
Other Commitments [Line Items]
Settlement amount			$ 2,025
Legal fees paid In advance	$ 400					$ 2,800