Quarterly report pursuant to Section 13 or 15(d)

Long Term Debt (Parenthetical) (Detail)

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Long Term Debt (Parenthetical) (Detail) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Note payable to bank one
   
Debt Instrument [Line Items]    
Monthly repayment installment of note payable $ 531,400 $ 531,400
Fixed interest rate of note payable 3.54% 3.54%
Balloon payment required under note payable 12,635,000 12,635,000
Note payable to bank two
   
Debt Instrument [Line Items]    
Monthly repayment installment of note payable 483,900 483,900
Fixed interest rate of note payable 3.19% 3.19%
Balloon payment required under note payable 11,670,000 11,670,000
Note payable to TCF Equipment Finance Inc
   
Debt Instrument [Line Items]    
Monthly repayment installment of note payable $ 30,500 $ 30,500
Fixed interest rate of note payable 5.24% 5.24%