v3.7.0.1
Income Taxes - Schedule of Income Tax Expense (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Current:      
Federal $ 30,362 $ 29,082 $ 12,299
State 4,855 4,750 3,044
Foreign 17,800 17,034 20,585
Total current income tax expense 53,017 50,866 35,928
Deferred income tax expense (benefit)      
Federal 857 (3,706) 25,113
State 590 124 1,771
Foreign 8 2,829 5,002
Total deferred income tax expense (benefit) 1,455 (753) 31,886
Income tax expense $ 54,472 $ 50,113 $ 67,814