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Discontinued Operations - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended |  | 0 Months Ended
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Dec. 31, 2012 | Sep. 30, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 17, 2012 Thermax and Raydex [Member] | Dec. 31, 2013 Thermax and Raydex [Member] | Dec. 31, 2012 Thermax and Raydex [Member] | Dec. 31, 2011 Thermax and Raydex [Member] | Dec. 31, 2010 Trapeze [Member] | Dec. 31, 2012 Trapeze [Member] | Dec. 31, 2011 Trapeze [Member] | Dec. 31, 2013 Trapeze [Member] | Dec. 31, 2012 Communications cable operation in Phoenix, Arizona [Member] Uncertain tax positions liability [Member] | Dec. 31, 2012 Communications cable operation in Phoenix, Arizona [Member] Uncertain tax positions liability [Member] Reversal of accrued interest and penalties [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount received in cash from the sales of business units |  |  |  |  |  | $ 265,600,000 |  |  |  | $ 152,100,000 |  |  |  |  |
Gain/(Loss) on disposal of discontinued operations, before tax |  |  |  |  |  | 211,600,000 |  |  |  | 88,300,000 | (7,000,000) |  |  |  |
Gain/(Loss) on disposal of discontinued operations, net of tax | 124,697,000 | 9,783,000 |  | 134,480,000 |  | 124,700,000 |  |  |  | 44,800,000 | (4,300,000) |  |  | 14,100,000 |
Income tax expense for discontinued operations |  |  | 1,400,000 | 78,700,000 | 7,600,000 |  | 1,400,000 |  |  |  |  |  |  |  |
Net current liability of discontinued operations | 86,860,000 |  |  | 86,860,000 |  |  |  | 86,900,000 |  |  |  |  |  |  |
Amount received in cash at the end of transaction |  |  |  |  |  |  |  |  |  | 136,900,000 |  |  |  |  |
Amount in escrow as partial security for Company's indemnity obligations under transaction's purchase and sale agreement |  |  |  |  |  |  |  |  |  | 15,200,000 |  |  |  |  |
Receivable, net | 300,864,000 |  | 304,204,000 | 300,864,000 |  |  |  |  |  |  |  |  | 3,800,000 |  |
Partial settlement received from escow |  |  | 4,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Income/(Loss) from Discontinued Operations, before tax |  |  |  | 25,459,000 | 20,647,000 |  |  | 21,479,000 | 21,792,000 |  |  | (196,000) |  |  | 4,000,000
Income/(Loss) from Discontinued Operations, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,600,000

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- Definition Amount of cash flows that are expected to continue with the disposal group that is a component of the entity (discontinued operation) after it has been sold or otherwise disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Continuation of Activities -URI http://asc.fasb.org/extlink&oid=6508610 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Continuing Cash Flows -URI http://asc.fasb.org/extlink&oid=6508624 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1482-107760 + Details
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