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
Mar. 31, 2014
Supplier
Mar. 31, 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    
Inventory reserve $ 34,700   $ 31,500
Accounts payable and accrued expenses for key suppliers 807,376   909,957
Uninsured portion of cash balance 14,388,954   16,026,510
Supplier Concentration Risk [Member]
     
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Number of key suppliers 4 4  
Accounts payable and accrued expenses for key suppliers 0   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 $ 50,400   $ 18,839