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Note 10 - Income (loss) per Share (Details Textual) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 188,000 66,000 196,000 66,000