Quarterly report pursuant to Section 13 or 15(d)

License Agreements - Additional Information (Detail)

v2.4.0.8
License Agreements - Additional Information (Detail) (USD $)
 3 Months Ended 9 Months Ended 3 Months Ended 0 Months Ended 1 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2014
Agreement
Aug. 31, 2013
Installment
Nov. 30, 2013
Aug. 31, 2013
Ecuador affiliate [Member]
Oct. 17, 2011
Mexico [Member]
Installment
Dec. 31, 2013
Mexico [Member]
License Agreements [Line Items]                
Types of agreements     2          
Date of notification received related to terminating license agreement     Aug. 19, 2011          
Date of amendment to license agreement with Mexico     Oct. 17, 2011          
Total royalty to be received in 37 monthly installments             $ 1,863,000  
Number of installments             37  
Amount of installment to be received related to termination of licenses agreement             50,000  
Final payment to be received related to termination of license agreement             13,000  
Mexico paid the balance due               563,000
Royalty note receivable 0   0   550,782      
Deferred royalty revenue 0   0   551,585      
Number of installments received       9        
Revenue associated with two agreements       50,000        
Accounts receivable, additional allowance for doubtful accounts           150,000    
Processing and storage revenues $ 500,000 $ 381,000 $ 1,313,000 $ 1,134,000