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Note 10. Geographic Operating Information (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Revenues $ 3,043,782us-gaap_Revenues $ 3,494,356us-gaap_Revenues
North America    
Revenues 2,473,314us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember		 2,745,206us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_NorthAmericaMember
Europe    
Revenues $ 570,468us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember		 $ 749,150us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= us-gaap_EuropeMember