Future Amortization Expense Related to Intangible Assets (Detail) (USD $)
Sep. 29, 2012
Dec. 31, 2011
Expected Amortization Expense [Line Items]    
2012 $ 80,135  
2013 208,761  
2014 59,848  
2015 37,750  
Intangible assets, net $ 386,494 $ 626,900