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Interest Expense, Net (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Interest Income (Expense), Net [Abstract]        
Interest (Income) $ (1) $ (1) $ (2) $ (2)
Interest Expense 4,160 3,510 8,456 7,170
Interest Expense – Income Taxes   174   348
Other Expenses 183 218 374 437
Interest Expense, net $ 4,342 $ 3,901 $ 8,828 $ 7,953