Annual report pursuant to Section 13 and 15(d)

Accounts Receivable (Details)

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Accounts Receivable (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Trade receivables $ 803,599 $ 231,412
Grant receivables 0 132,227
Other receivables 84,420 107,657
Accounts Receivable, Gross, Current 888,019 471,296
Allowance for doubtful accounts (15,145) (24,775)
Accounts Receivable, Net, Current $ 872,874 $ 446,521