Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Significant Accounting Policies - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Supplier
Sep. 30, 2013
Supplier
Sep. 30, 2014
Supplier
Sep. 30, 2013
Supplier
Dec. 31, 2013
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]          
Number of dental distributor with guaranteed rights of returns     2    
Revenue deferred under guaranteed rights of return arrangements $ 25,592   $ 25,592   $ 18,839
Inventory reserve 41,200   41,200   31,500
Accounts payable and accrued expenses for key suppliers 604,351   604,351   909,957
Uninsured portion of cash balance 11,514,923   11,514,923   16,026,510
Supplier Concentration Risk [Member]
         
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]          
Number of key suppliers 4 4 4 4  
Accounts payable and accrued expenses for key suppliers 90,504   90,504   146,284
Guaranteed Rights of Return [Member]
         
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]          
Revenue deferred under guaranteed rights of return arrangements $ 25,592   $ 25,592   $ 18,839