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Commitments (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Dec. 31, 2015
Mar. 31, 2015
Mar. 31, 2014
Other Commitments [Line Items]      
Rent expenses $ 68,839 $ 72,826 $ 67,972
Contractual obligation payment schedule      
Fiscal 2016 72,822    
Fiscal 2017 60,757    
Fiscal 2018 55,487    
Fiscal 2019 50,389    
Fiscal 2020 41,435    
Thereafter 90,933    
Total $ 371,823    
Minimum      
Other Commitments [Line Items]      
Operating leases renewal period (in years) 1 year    
Maximum      
Other Commitments [Line Items]      
Operating leases renewal period (in years) 5 years