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Income Taxes - Schedule of Earning Before Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Income Tax Disclosure [Abstract]      
United States $ 53,339 $ 74,440 $ 80,436
Foreign 128,872 163,886 132,259
Earnings before income taxes $ 182,211 $ 238,326 $ 212,695