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Contingent Liabilities - Additional Information (Detail) (USD $)
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Dec. 31, 2012
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| Site Contingency [Line Items] | |
| Accrued environmental remediation expense | $ 400,000 |
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Environmental Remediation Expense
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| Site Contingency [Line Items] | |
| Accrued environmental remediation expense | $ 105,000 |
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- Definition
Carrying amount of the liability for remediation of environmental damage pertaining to assets or businesses previously disposed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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