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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Reconciliation of Unrecognized Tax Benefits |  |  |
Unrecognized tax benefits, beginning balance | $ 7,795 | $ 20,165 | $ 1,568
Increases related to current year tax positions | 346 | 598 | 129
Increases related to the Alpha acquisition | 0 | 769 | 7,840
Increases related to prior year tax positions | 325 | 0 | 11,463
Decreases related to prior tax positions due to foreign currency translation | 0 | (11,463) | (544)
Decreases related to prior year tax positions | 0 | 0 | (93)
Lapse of statute of limitations | (1,681) | (2,274) | (198)
Unrecognized tax benefits, ending balance | $ 6,785 | $ 7,795 | $ 20,165

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- Definition Unrecognized Tax Benefits Decrease Resulting from Prior Year Tax Position Due to Foreign Currency Translation + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=116821951&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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