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Interest Expense, Net (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Interest Income (Expense), Net [Abstract]        
Interest (Income) $ (3) $ (4) $ (6) $ (4)
Interest Expense 7,153 5,348 14,329 9,096
Other Expenses 306 312 616 465
Interest Expense, net $ 7,456 $ 5,656 $ 14,939 $ 9,557