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Note 11 - Earnings (Loss) Per Share (Details Textual) - shares
3 Months Ended 9 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 605,000 605,000 1,414,916 1,414,916