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 6 Months Ended
Jun. 30, 2014
Supplier
Jun. 30, 2013
Supplier
Jun. 30, 2014
Supplier
Jun. 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 $ 38,876   $ 38,876   $ 18,839
Inventory reserve 42,700   42,700   31,500
Accounts payable and accrued expenses for key suppliers 703,214   703,214   909,957
Uninsured portion of cash balance 12,648,573   12,648,573   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 0   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 $ 38,876   $ 38,876   $ 18,839