Unbilled Accounts Receivable and Significant Concentrations (Tables)

12 Months Ended

Dec. 31, 2017

Schedule Of Unbilled Accounts Receivable [Table Text Block]

Unbilled receivables consist of the following by customer type as of the periods presented below:

	DECEMBER 31,
	2017		2016
Government	$	7,872,675	$	7,833,828
Commercial		258,773		278,862
Unbilled accounts receivable	$	8,131,448	$	8,112,690

Unbilled receivables [Member]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

Customers representing ten percent or more of consolidated unbilled accounts receivable are set forth in the table below as of the periods presented:

	DECEMBER 31,
	2017	2016
	As a % of	As a % of
Customer Name	Receivables	Receivables
U.S. Department of Homeland Security HQ	11%	18%
U.S. Immigration and Customs Enforcement	27%	13%
U.S. Transportation Safety Administration	12%	—