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Summary of Debt other than Related Party Debt (Parenthetical) (Detail) (USD $)
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6 Months Ended |
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Jun. 30, 2013
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| Debt Instrument [Line Items] | |
| Number of installment of note payable | Payable in 36 to 60 monthly installments |
| Total notes payable | $ 10,020 |
| Interest rate, minimum | 2.90% |
| Interest rate, maximum | 10.35% |