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Discontinued Operations - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 27, 2015 | Jun. 28, 2015 | Dec. 31, 2014 | Mar. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Gain/(Loss) on disposal of discontinued operations, net of tax |  | $ (86) |  | $ (562) | $ (86) | $ (562) |  |  |
Income (loss) from discontinued operations, net of tax | $ (242) |  | $ 579 |  | (242) | 579 | $ (1,421) |  |
Thermax and Raydex [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Cash proceeds from the sales of discontinued operations |  |  |  |  |  |  |  | $ 265,600 |
Gain/(Loss) on disposal of discontinued operations, before income tax |  |  |  |  |  | (900) |  | 211,600 |
Gain/(Loss) on disposal of discontinued operations, net of tax |  |  |  |  |  | (600) |  | $ 124,700 |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  | 1,400 |  |
Trapeze [Member] |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Cash proceeds from the sales of discontinued operations |  |  |  |  |  |  |  |  | $ 136,900
Gain/(Loss) on disposal of discontinued operations, before income tax |  |  |  |  | (200) |  |  |  | 88,300
Gain/(Loss) on disposal of discontinued operations, net of tax |  |  |  |  | (100) | $ 600 |  |  | 44,800
Income (loss) from discontinued operations, net of tax |  |  |  |  | (200) |  |  |  |
Sale price for business |  |  |  |  |  |  |  |  | 152,100
Amount in escrow as partial security for Company's indemnity obligations under transaction's purchase and sale agreement |  |  |  |  |  |  |  |  | $ 15,200
Escrow receivable collected |  |  |  |  | $ 3,500 |  | $ 4,200 |  |

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- Definition Amount of cash inflow (outflow) from (to) the discontinued operation after the disposal transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=51717284&loc=SL51721665-107760 + Details
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