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Valuation And Qualifying Accounts (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Allowance For Doubtful Accounts And Returns [Member]    
Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance at Beginning of Year $ 131,464 $ 383,077
Additions Charged to Cost and Expenses (9,463) 48,742
Deductions (28,523) (300,355)
Balance at the End of Year 93,478 131,464
Allowance For Inventories Valuation [Member]    
Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance at Beginning of Year 59,634 80,213
Additions Charged to Cost and Expenses 42,258 6,970
Deductions (81,921) (27,549)
Balance at the End of Year $ 19,971 $ 59,634