Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Expense (benefit) from income taxes	$ 3,230	$ 2,172	$ (35,679)	$ (18,472)
Effective income tax rate	(36.00%)	(9.00%)	32.00%	27.00%
U.S. statutory federal income tax rate, percent			21.00%	35.00%
Increase (decrease) in gross unrecognized tax benefits			$ 5,100

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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