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RESTRUCTURING (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended 60 Months Ended
Sep. 30, 2012
USD ($)
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2016
USD ($)
ft²
item
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2015
USD ($)
RESTRUCTURING                      
Restructuring Charges, Total           $ 1,060          
Exit costs     $ 874     1,060 $ 2,153 $ 5,331 $ 4,769 $ 874 $ 14,187
Impairment charges   $ 186                  
Percentage of facility footprint planned to be reduced through the sale and/or closure         40.00%            
Area of facilities planned to be reduced through the sale and/or closure (in square feet) | ft²         600,000            
Number of facilities for which agreement has been reached to close or reduce leased presence | item         6            
Area of facilities for which agreement has been reached to close or reduce leased presence | ft²         400,000            
Number of remaining properties vacated and marketed for sale | item         1            
Liability associated with environmental remediation costs         $ 1,241            
Non-cash restructuring charges           4,800          
Addition in liability associated with environmental remediation costs $ 352     $ 258              
Capital Expenditures                      
RESTRUCTURING                      
Exit costs             674 2,352 2,596 5 5,627
Gain On Sale Of Brandon Facility                      
RESTRUCTURING                      
Exit costs               3,585     3,585
Accelerated Depreciation                      
RESTRUCTURING                      
Exit costs               898 819   1,717
Severance                      
RESTRUCTURING                      
Exit costs               435   430 865
Impairment Charges                      
RESTRUCTURING                      
Exit costs           186   2,365     2,551
Moving And Other Exit Related Costs                      
RESTRUCTURING                      
Exit costs           $ 874 $ 1,479 $ 2,866 $ 1,354 $ 439 7,012
Brandon Facility                      
RESTRUCTURING                      
Gain on sale of Brandon, SD Facility                     $ 3,585