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Note 9. Geographic Operating Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Revenues $ 3,106,389 $ 3,638,269 $ 6,150,171 $ 7,132,625
North America        
Revenues 2,564,841 2,860,789 5,038,155 5,605,995
Europe        
Revenues $ 541,548 $ 777,480 $ 1,112,016 $ 1,526,630