Annual report pursuant to Section 13 and 15(d)

2. Receivables (Details)

v3.3.1.900
2. Receivables (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Allowance for doubtful accounts $ 0 $ 878
Accounts receivable, net 1,298,029 970,621
Billed-federal government    
Accounts receivable gross 754,540 758,818
Billed-commercial and other    
Accounts receivable gross 180,474 212,324
Total billed    
Accounts receivable gross 935,014 971,142
Unbilled    
Accounts receivable gross $ 363,015 $ 357