Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)

v3.5.0.2
Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 9 Months Ended
Feb. 01, 2012
USD ($)
Dec. 31, 2015
USD ($)
Aug. 31, 2016
USD ($)
CompensationPlan
Aug. 31, 2015
USD ($)
Aug. 31, 2016
USD ($)
CompensationPlan
Deliverables
Aug. 31, 2015
USD ($)
Nov. 30, 2015
USD ($)
Schedule of Available-for-sale Securities [Line Items]              
Number of deliverables for revenue recognized | Deliverables         2    
Period of doubtful for accounts receivable due from client         21 years    
Contracted storage periods option two         21 years    
Contracted storage periods option one         1 year    
Contracted storage periods option three         Lifetime    
Deferred revenue recognition period         12 months    
Reversal of accounts receivable         $ 287,000    
Valuation allowance     $ 2,630,000   2,630,000   $ 2,630,000
U.S. Income tax expense     990,000   (842,000)    
Income tax (expense) benefit     898,838 $ 6,931,423 697,103 $ 6,880,599  
Income tax benefit, net of foreign taxes       6,931,000   6,881,000  
Foreign income tax expense     91,000 25,000 $ 145,000 76,000  
Minimum percentage probability of realized tax benefit on settlement         50.00%    
Provisions for interest or penalties related to uncertain tax positions     0 0 $ 0 0  
Uncertain tax provisions     0 0 0 0  
Impairment on long lived assets     $ 0 0 $ 0 0  
Number of employee stock based compensation plan | CompensationPlan     2   2    
Stock-based option compensation expense     $ 433,000 60,000 $ 821,000 305,000  
Unrealized holding gain (losses), trading securities     (29,371) (11,529) (50,023) (4,813)  
Unrealized gain (losses) on marketable securities, net of tax     (14,122) (82,958) (114,342) 143,318  
Payment warranty   $ 50,000          
Increased payment warranty $ 75,000            
Additional payment warranty $ 10,000            
Reserves recorded under programs     17,000   $ 17,000   $ 17,000
United States [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Valuation allowance       $ 6,957,000   $ 6,957,000  
Accounts Receivable [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Period of doubtful for accounts receivable due from client         30 days    
Other Income and Expense [Member]              
Schedule of Available-for-sale Securities [Line Items]              
Realized gains on disposition of available for sale securities     $ 0   $ 7,361