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Note Receivable (Details Textual) (USD $)
3 Months Ended
Nov. 30, 2012
May 31, 2013
Note Receivable (Additional Textual) [Abstract]    
Selling expenses paid for sale of idle property, plant and equipment $ 152,000  
Note receivable interest rate 6.00%  
Note receivable interest amortization period 20 years  
Note receivable final payment period 6 years  
Note Receivable less principal payments received   1,678,000
Recreational Vehicles [Member]
   
Note Receivable (Textual) [Abstract]    
Number of idle facilities sold 2  
Down payment received for sale of idle property, plant and equipment 500,000  
Note receivable from sale of idle property, plant and equipment 1,700,000  
Cash received for facilities sold $ 348,000  
Facilities collateral for note 2