DISCONTINUED OPERATIONS - Summary of Statements of Operations, Discontinued Operations (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations		$ (10,370,000)	$ (2,291,000)	$ (43,094,000)
SeaSpine Inc. | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenue	$ 65,775,000		137,808,000	147,314,000
Costs and expenses	80,618,000		140,124,000	192,843,000
Operating income (loss)	(14,843,000)		(2,316,000)	(45,529,000)
Other income (expense), net	(766,000)		(271,000)	(4,559,000)
Income (loss) from discontinued operations before tax	(15,609,000)		(2,587,000)	(50,088,000)
Provision (benefit) for income taxes	(5,239,000)		(296,000)	(6,994,000)
Net income (loss) from discontinued operations	$ (10,370,000)	$ 0	$ (2,291,000)	$ (43,094,000)