Note 8. Concentrations (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016
Customer Concentration Risk [Member] | U.S. Government [Member] | Sales Revenue, Segment [Member]
Concentration Risk, Percentage	78.40%	55.40%
Customer Concentration Risk [Member] | Government Customers [Member]
Concentration Risk, Percentage	78.40%	50.70%
Number of Major Customers	5	3
Customer Concentration Risk [Member] | Commercial Customers [Member] | Sales Revenue, Segment [Member]
Concentration Risk, Percentage	21.60%	44.60%
Customer Concentration Risk [Member] | Commercial Customers [Member]
Concentration Risk, Percentage	18.90%	31.60%
Number of Major Customers	1	2
Number of Areas in Which Operations are Concentrated			1