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SHARE-BASED COMPENSATION Schedule of Share-Based Compensation Activity (Details)
shares in Thousands
6 Months Ended
Jun. 30, 2017
shares
Restricted stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted 763
Vested 710
Performance share units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted 348
Vested 160