GOODWILL AND INTANGIBLE ASSETS (Details 2) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2015	$ 30,880
Percentage payments on collections of net sales of EXPAREL	1,904
Balance at March 31, 2016	32,784
When annual net sales collected reach $100.0 million
Goodwill
Payment Obligation Arising Due to Net Sales Collected Threshold of $100 Million	8,000
Net Sales Collected Threshold Which Triggers a Payment Obligation	$ 100,000