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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |
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Mar. 31, 2017 | Mar. 31, 2016
Income Tax Disclosure [Abstract] |  |
Federal statutory tax rate | 35.00% |
Valuation allowance | $ 2,327 | $ 4,705
Unrecognized deferred tax liability for temporary differences related to investments in foreign subsidiaries estimated amount | $ 435,000 |
Foreign tax credit carry-forwards expiry period | 2022 |
Income tax penalties and interest | $ 7,000 |

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