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Debt - Additional Information (Detail) (USD $)	6 Months Ended
Debt - Additional Information (Detail) (USD $)	Jun. 30, 2013 Property	Mar. 26, 2012
Debt Instrument [Line Items]
Revolving line of credit		$ 500,000
Leases buyout at lease end		1
Revolving line of credit, borrowed	455,000
Number of leases	7
Lease term	60 months
Lease, Imputed interest rate	4.20%
Minimum
Debt Instrument [Line Items]
Financial covenants, tangible net worth	15,000,000
Financial covenants, minimum liquidity	$ 2,000,000

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

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