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Note 10 - Income Taxes (Details) - Tax Effects of Temporary Differences That Give Rise to Significant Portions of the Deferred Tax Assets and Liabilities (USD $)
Dec. 31, 2013
Dec. 31, 2012
Deferred tax assets:    
Deferred revenue $ 5,300,868 $ 5,429,220
Losses 290,714  
Foreign tax credit 1,914,090  
Amortization 69,169 541,242
Accruals, including foreign exchange and other (1,123,278)  
Deferred tax assets 6,451,563 5,970,462
Deferred income tax asset, current portion 1,081,526  
Deferred income tax asset, long-term portion 5,370,037 5,970,462
Deferred tax liabilities:    
Accruals, including foreign exchange and other   (914,429)
Limited life intangible assets (301,500) (394,100)
Indefinite life intangible assets (4,840,000) (4,840,000)
Total deferred tax liabilities (5,141,500) (6,148,529)
Less deferred tax liability, current portion   (914,429)
Deferred tax liability, long-term portion $ (5,141,500) $ (5,234,100)