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Note 8 - Earnings Per Share (Details Textual) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Employee Stock Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 3,400,000 3,400,000
Warrant [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 7,400,000 7,400,000
Restricted Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 259,000 259,000