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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

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