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Note 9 - Recent Accounting Pronouncements (Details Textual) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Deferred Tax Liabilities, Net, Noncurrent $ 42,386
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent 2,382
Scenario, Previously Reported [Member]    
Deferred Tax Liabilities, Net, Noncurrent   252,135
Deferred Tax Assets, Net of Valuation Allowance, Current   254,517
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent   $ 2,382