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RESTRUCTURING CHARGES - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Employee
Jun. 30, 2016
USD ($)
Employee
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Employee
Mar. 31, 2015
USD ($)
Jun. 30, 2017
USD ($)
Restructuring Cost and Reserve [Line Items]            
Restructuring charges     $ 4,001 $ 468 $ 0  
Employee-Related            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges   $ 2,000 1,900 $ 500    
Number of employees terminated | Employee 41 19   1    
Facilities Related            
Restructuring Cost and Reserve [Line Items]            
Restructuring charges     $ 400      
Forecast | Employee-Related            
Restructuring Cost and Reserve [Line Items]            
Anticipated restructuring cost           $ 700