COMMITMENTS AND CONTINGENCIES - LEGAL MATTERS (Details)			1 Months Ended		9 Months Ended
	May 05, 2017	Apr. 11, 2017 defendant patent	Feb. 29, 2016 patent	Jul. 31, 2014 claim	Sep. 30, 2017
Gralise ANDA Filers
Legal matters
Number of patents infringed | patent		3	3
Number of defendants | defendant		3
130 Patent
Legal matters
Number of defendants | defendant		4
Purdue
Legal matters
No of claims declined for 475 patent				2
No of claims declined for 280 patent				2
Number of claims instituted for 475 patent				15
Number of claims instituted for 280 patent				10
Strides
Legal matters
Period of stay for FDA approval	30 months
Banner and Watson | Zipsor
Legal matters
Eligible period of regulatory exclusivity					180 days