DISCONTINUED OPERATIONS (Summary of Statements of Operations, Discontinued Operations) (Details) - USD ($)	12 Months Ended			30 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ 0	$ 0	$ (10,370,000)
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
Costs and expenses			80,618,000
Operating loss			(14,843,000)
Other expense, net			(766,000)
Loss from discontinued operations before tax			(15,609,000)
Benefit for income taxes			(5,239,000)
Loss from discontinued operations			$ (10,370,000)	$ 0