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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income Tax Disclosure [Abstract] |  |  |  |
Expense (benefit) from income taxes | $ 2,390 | $ (9,704) | $ (4,820) | $ (38,909)
Effective income tax rate | 26.00% | 27.00% | (53.00%) | 38.00%
Increase (decrease) in gross unrecognized tax benefits | $ 3,200 |  | $ 6,400 |

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