Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.3.1.900
Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2015
USD ($)
Supplier
Segment
Customer
Dec. 31, 2014
USD ($)
Supplier
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Number of dental distributor with guaranteed rights of returns | Customer 2  
Revenue deferred under guaranteed rights of return arrangements $ 14,215 $ 21,222
Cash and cash equivalents with original maturity period Three months or less  
Allowance for doubtful accounts $ 1,400 1,000
Inventory reserve $ 60,660 50,184
Number of business operating segment | Segment 1  
Impairment losses $ 0 0
Advertising and marketing expense $ 35,887 61,085
Uncertain income tax position, unrecognized Less than a 50%  
Accounts payable and accrued expenses for key suppliers $ 969,787 710,210
Uninsured portion of cash balance $ 4,833,355 $ 10,198,921
Supplier Concentration Risk [Member]    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Number of key suppliers | Supplier 4 4
Accounts payable and accrued expenses for key suppliers $ 91,138 $ 189,120
Guaranteed Rights of Return [Member]    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Revenue deferred under guaranteed rights of return arrangements $ 14,215 $ 21,222
Leasehold Improvements [Member]    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful lives of assets 3 years  
Minimum [Member]    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful lives of assets 3 years  
Maximum [Member]    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful lives of assets 7 years