Future Minimum Rental Commitments under Non Cancelable Long-Term Operating Leases (Detail) (USD $)	Dec. 31, 2012
Leases Future Minimum Payments [Line Items]
2013	$ 243
2014	131
2015	$ 131

- Definition

Amount of minimum lease payments maturing in the fourth fiscal year following the latest fiscal year for sale-leaseback transactions accounted for using the deposit method or as a financing.

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- Definition

Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for sale-leaseback transactions accounted for using the deposit method or as a financing.

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- Definition

Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for sale-leaseback transactions accounted for using the deposit method or as a financing.

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