Quarterly report pursuant to sections 13 or 15(d)

Allowance for Bad Debts (Detail)

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Allowance for Bad Debts (Detail) (USD $)
9 Months Ended
Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Allowance for doubtful accounts at January 1 $ 56,931
Additions 10,547
Write-offs (5,547)
Allowance for doubtful accounts at September 30 $ 61,931