Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Schedule of Share-Based Compensation Expense is Classified in Consolidated Statements of Comprehensive Loss (Detail)

v3.2.0.727
Share-Based Compensation - Schedule of Share-Based Compensation Expense is Classified in Consolidated Statements of Comprehensive Loss (Detail) - USD ($)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation $ 431,504 $ 339,780
Selling General And Administrative Expenses [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation 370,524 297,929
Research And Development Expense [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation $ 60,980 $ 41,851