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Unaudited Proforma Information of Summary of Results of Operations (Detail) - Shannon Systems - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] |  |
Net sales | $ 364,670 | $ 293,562
Net income | $ 58,468 | $ 42,483
Earnings per share |  |
Basic | $ 0.42 | $ 0.31
Diluted | $ 0.42 | $ 0.31
Weighted average ordinary shares outstanding (thousand) |  |
Basic | 138,880 | 136,164
Diluted | 140,414 | 138,347

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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