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Income Taxes - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 3 Months Ended | 12 Months Ended | 1 Months Ended |
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Apr. 01, 2012 | Sep. 26, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Jun. 30, 2012 | Dec. 31, 2012 Minimum | Dec. 31, 2012 Maximum | Jun. 30, 2012 Hotspur Technologies | Apr. 01, 2012 Excess Tax Deductions | Dec. 31, 2012 Excess Tax Deductions | Dec. 31, 2011 Excess Tax Deductions | Dec. 31, 2011 Cargo And Container Businesses | Dec. 31, 2012 No Expiration Date | Dec. 31, 2012 After 2012 but before the end of 2017 | Dec. 31, 2012 After 2017
Income Tax Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on the sale of business |  |  | $ 2,205,000 | [1] | $ 270,630,000 | [1] | $ 114,702,000 | [1] |  |  |  |  |  |  |  | $ 217,800,000 |  |  |
Gain on sale of business, related taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 91,000,000 |  |  |
Cumulative unremitted earnings |  |  | 677,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective income tax rate, total |  |  | (9.93%) |  | 17.77% |  | 16.18% |  |  |  |  |  |  | 9.90% | 17.80% |  |  |  |
Goodwill impairment charges | 332,000,000 |  |  |  |  |  |  |  |  |  |  |  | 45,000,000 |  |  |  |  |  |
Future tax effects of enacted legislation |  |  | 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Realized net benefit as result of reducing our reserves with respect to uncertain tax positions |  |  | 8,000,000 |  | 3,900,000 |  | 3,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Adjustment associated with tax returns filed and tax audit conclusions |  | 5,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax effect, carry forwards |  |  | 87,500,000 |  |  |  |  |  |  |  |  | 10,800,000 |  |  |  |  | 12,300,000 | 800,000 | 74,400,000
Percentage of change in ownership |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized tax losses related to acquisition |  |  |  |  |  |  |  |  | 2,500,000 |  |  |  |  |  |  |  |  |  |
Deferred tax assets, valuation allowance |  |  | 70,469,000 |  | 66,305,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits that would impact effective tax rate |  |  | 26,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits, interest (benefit) expense |  |  | 800,000 |  | (100,000) |  | (2,500,000) |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits, penalties |  |  | 200,000 |  | 300,000 |  | 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits, interest (benefit) expense accrued |  |  | 6,700,000 |  | 11,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits, penalties accrued |  |  | 9,200,000 |  | 9,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits change within next twelve months due to potential for resolution of foreign and U.S. examinations |  |  | $ 169,000 |  | $ (411,000) |  | $ (3,026,000) |  |  | $ 0 | $ 7,600,000 |  |  |  |  |  |  |  |
[1] | The $2.2 million pre-tax gain on disposition during 2012 primarily reflects the gain recognized on the working capital adjustment related to the sale of the cargo systems and cargo container businesses.

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