Annual report pursuant to Section 13 and 15(d)

2. Receivables (Details)

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2. Receivables (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Allowance for doubtful accounts $ 0 $ 0
Accounts receivable, net 1,157,387 1,298,029
Billed-federal government    
Accounts receivable gross 693,321 754,540
Billed-commercial and other    
Accounts receivable gross 67,201 180,474
Total billed    
Accounts receivable gross 760,522 935,014
Unbilled    
Accounts receivable gross $ 396,865 $ 363,015