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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Mar. 31, 2013
Geographic Information          
Revenues $ 256,089 $ 263,633 $ 492,759 $ 501,943  
Countries other than US | Foreign subsidiaries
         
Geographic Information          
Revenues 13,207 13,681 26,245 27,030  
Long-lived assets $ 32,206   $ 32,206   $ 36,192