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Financial Statement Details - Summary of Inventories (Detail) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Finished goods | $ 9,814 | $ 14,331
Raw materials and components | 5,211 | 6,072
Total inventories, net | $ 15,025 | $ 20,403

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- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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