Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) (USD $)
 1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2013
sqft
May 30, 2012
Directors
Dec. 31, 2005
Aug. 31, 2013
CompensationPlan
Aug. 31, 2012
Aug. 31, 2013
Deliverables
CompensationPlan
Aug. 31, 2012
Nov. 30, 2012
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]                
Number of deliverables for revenue recognized           2    
Deferred revenue recognition period           12 months    
Valuation allowance       $ 10,723,000   $ 10,723,000   $ 10,947,000
U.S. Income tax expense       0   0 1,700,000  
Amount transferred to reserve against losses         1,700,000   1,700,000  
Foreign income tax expense       42,000 45,000 127,000 127,000  
Minimum percentage probability of realized tax benefit on settlement           50.00%    
Provision for interest or penalties related to uncertain tax positions       0 0 0 0  
Impairment on long lived assets       0 0 0 0  
Abandonment of patents           378,837    
Area of building lease terminated 9,600              
Savings on early lease termination 280,000              
Net savings on early lease termination 130,000              
Lease termination fee       150,000   150,000    
Rent saving period due to lease amendment 18 months              
Number of employee stock based compensation plan       3   3    
Stock option compensation expense       63,000 54,000 225,000 1,074,000  
Number of individuals nominated directors   6            
Immediate vesting of the options included in stock compensation expense           225,177 1,073,536  
Payment Warranty     50,000          
Increased payment warranty           75,000    
Additional payment warranty           10,000    
Reserves recorded under programs       15,346   15,346   14,485
Chief Executive Officer [Member]
                
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]                
Immediate vesting of the options included in stock compensation expense             $ 700,000  
Minimum [Member]
                
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]                
Contracted storage periods           1 year    
Maximum [Member]
                
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]                
Contracted storage periods           21 years