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Goodwill and Acquired Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016 | Apr. 03, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |
Increase (decrease) in goodwill | $ 2,800 |  |
Amortization of acquired intangible assets | 10,788 | $ 16,438 | $ 17,966
Arconics [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Change in goodwill related to an acquisition | 3,800 |  |
Increase in other intangible assets related to acquisition | $ 19,300 |  |
Engreen [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Increase in other intangible assets related to acquisition |  | $ 7,700 |
Minimum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other acquired intangible assets estimated useful lives | 2 years |  |
Maximum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Other acquired intangible assets estimated useful lives | 10 years |  |

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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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