|
Contingent Liabilities - Additional Information (Detail) (USD $)
|
Dec. 31, 2012
|
|---|---|
| Environmental Remediation Obligations [Abstract] | |
| Accrued environmental remediation expense | $ 105,000 |
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- Details
|