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Accounts Receivable and Unbilled Accounts Receivable
 12 Months Ended
Dec. 31, 2015
Accounts Receivable and Unbilled Accounts Receivable [Abstract]  
Accounts Receivable and Unbilled Account Receivables [Text Block]
5.
Accounts Receivable and Unbilled Accounts Receivables
 
Accounts receivable consist of the following:
 
 
 
DECEMBER 31,
 
 
 
2015
 
2014
 
 
 
 
 
 
 
 
 
Commercial
 
$
2,616,702
 
$
5,328,988
 
Government
 
 
8,021,789
 
 
3,302,781
 
Gross accounts receivable
 
 
10,638,491
 
 
8,631,769
 
Less: allowances for doubtful accounts
 
 
(73,378)
 
 
(88,719)
 
 
 
 
 
 
 
 
 
Accounts receivable, net
 
$
10,565,113
 
$
8,543,050
 
 
For the years ended December 31, 2015, 2014 and 2013, the Company had no material recoveries of accounts receivable for which an allowance had been previously established.
 
Unbilled accounts receivable consist of the following:
 
 
 
DECEMBER 31,
 
 
 
2015
 
2014
 
 
 
 
 
 
 
 
 
Commercial
 
$
422,138
 
$
550,590
 
Government
 
 
6,215,449
 
 
4,996,826
 
 
 
 
 
 
 
 
 
Unbilled accounts receivable
 
$
6,637,587
 
$
5,547,416