GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of change in carrying value of goodwill

The change in the carrying value of goodwill is summarized as follows (in thousands):

	Carrying Value
Balance at December 31, 2015	$	30,880
Percentage payments on collections of net sales of DepoBupivacaine products	7,857
Milestone payment triggered by collections of net sales of DepoBupivacaine products	8,000
Balance at December 31, 2016	46,737
Percentage payments on collections of net sales of DepoBupivacaine products	8,460
Balance at December 31, 2017	$	55,197