Quarterly report pursuant to Section 13 or 15(d)

Line of Credit, Short-Term and Long-Term Borrowings - Long-Term Borrowings (Parenthetical) (Detail)

v2.4.0.8
Line of Credit, Short-Term and Long-Term Borrowings - Long-Term Borrowings (Parenthetical) (Detail) (USD $)
Sep. 30, 2013
Note payable to banks one [Member]
  
Debt Instrument [Line Items]  
Monthly repayment installment of note payable $ 343,400
Variable interest rate of note payable 3.93%
Balloon payment required under note payable 76,976,000
Due date for note payable 2015-11
Note payable to banks two [Member]
  
Debt Instrument [Line Items]  
Monthly repayment installment of note payable 531,400
Fixed interest rate of note payable 3.54%
Balloon payment required under note payable 12,635,000
Due date for note payable 2015-12
Note payable to banks three [Member]
  
Debt Instrument [Line Items]  
Monthly repayment installment of note payable 483,900
Fixed interest rate of note payable 3.19%
Balloon payment required under note payable 11,670,000
Due date for note payable 2016-06
Note payable to TCF Equipment Finance, Inc. [Member]
  
Debt Instrument [Line Items]  
Monthly repayment installment of note payable $ 30,500
Fixed interest rate of note payable 5.24%
Due date for note payable 2019-07