Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional Information (Detail)

v2.4.0.8
Intangible Assets - Additional Information (Detail) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Finite-Lived Intangible Assets [Line Items]        
Amortization expense $ 15,000 $ 35,000 $ 29,405 $ 63,671
License agreements extended period     60 days  
Minimum royalty of agreements     12,500  
Capping total royalties for multiple royalty payments to licensors     3.75%  
Milestone fee upon receiving a Phase II Small Business Innovation Research     15,000  
Selling and Marketing Expense
        
Finite-Lived Intangible Assets [Line Items]        
Royalty fees included in sales and marketing expense 58,000 45,000 105,000 82,000
Licensing agreements
        
Finite-Lived Intangible Assets [Line Items]        
Future amortization of license and patent agreements in 2013 29,000   29,000  
Future amortization of license and patent agreements in 2014 55,000   55,000  
Future amortization of license and patent agreements in 2015 46,000   46,000  
Future amortization of license and patent agreements in 2016 46,000   46,000  
Future amortization of license and patent agreements in 2017 46,000   46,000  
Future amortization of license and patent agreements in 2018 $ 46,000   $ 46,000  
Patents
        
Finite-Lived Intangible Assets [Line Items]        
License agreements amortization periods     3 years  
Minimum
        
Finite-Lived Intangible Assets [Line Items]        
Royalty fees range under the license agreements     1.00%  
Minimum | Licensing agreements
        
Finite-Lived Intangible Assets [Line Items]        
License agreements amortization periods     17 years  
Maximum
        
Finite-Lived Intangible Assets [Line Items]        
Royalty fees range under the license agreements     3.00%  
Maximum | Licensing agreements
        
Finite-Lived Intangible Assets [Line Items]        
License agreements amortization periods     20 years