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ORGANIZATION, BASIS OF PRESENTATION AND ACCOUNTING POLICIES - Share-Based Compensation (Details) - USD ($)
$ in Millions
6 Months Ended
Jan. 01, 2017
Jun. 30, 2017
Share-Based Compensation    
Dividend yield (as a percent)   0.00%
Accounting Standards Update 2016-09    
Share-Based Compensation    
Net impact on opening accumulated deficit $ 0.0