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RESTRUCTURING AND OTHER RELATED CHARGES Rollforward of Liability - 2017 Cost Savings Initiative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 24, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Restructuring Cost and Reserve [Line Items]          
Charges   $ 2,637 $ 0 $ 1,661 $ 0
2017 Cost Savings Initiative          
Restructuring Cost and Reserve [Line Items]          
Charges   2,632   2,869  
Expected annual impact of cost savings initiative $ 30,000        
Employee Severance | 2017 Cost Savings Initiative          
Restructuring Cost and Reserve [Line Items]          
Balance, beginning of period       0  
Charges       2,869  
Payments       (2,527)  
Balance, end of period   $ 342   $ 342