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Revenue Recognition - Schedule of Estimated Amount of Deferred Revenue and Customer Advances (Detail) $ in Thousands | Jun. 30, 2018 USD ($)
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Revenue Recognition [Line Items] |
Deferred revenue and customer advances expected to be recognized | $ 240,755
In One Year or Less [Member] |
Revenue Recognition [Line Items] |
Deferred revenue and customer advances expected to be recognized | 203,715
In 13-24 Months [Member] |
Revenue Recognition [Line Items] |
Deferred revenue and customer advances expected to be recognized | 24,522
In 25 Months and Beyond [Member] |
Revenue Recognition [Line Items] |
Deferred revenue and customer advances expected to be recognized | $ 12,518

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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045 + Details
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