Annual report pursuant to Section 13 and 15(d)

2. Receivables (Tables)

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