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Note 10 - Income Taxes (Detail) - The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities: (USD $)
Dec. 31, 2012
Dec. 31, 2011
Deferred tax assets:    
Deferred revenue $ 5,429,220 $ 5,648,563
Amortization 541,242 1,231,814
Total gross deferred tax assets 5,970,462 6,880,377
Net deferred tax assets 5,970,462 6,880,377
Deferred income tax asset, long-term portion 5,970,462 6,880,377
5,970,462 6,880,377
Deferred tax liabilities:    
Reserves and other (914,429) (880,008)
Limited life intangible assets (394,100) (505,700)
Indefinite life intangible assets (4,840,000) (4,840,000)
Total deferred tax liabilities (6,148,529) (6,225,708)
Less deferred tax liability, current portion (914,429) (880,008)
Deferred tax liability, long-term portion $ (5,234,100) $ (5,345,700)