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Note 10 - Income Taxes - Components of Income Taxes (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Federal $ 58,304 $ 1,091,216
State 80,367 11,580
Total current tax provision 138,671 1,102,796
Deferred:    
Federal (495,233) 831,148
State
Total deferred tax provision (495,228) 831,148
Income tax expense/(benefit) $ (356,562) $ 1,933,944