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Note 3 - Significant Accounting Policies - Basic and Diluted Earnings (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Net loss attributable to common stockholders $ (469) $ (973)
Less: net income attributable to participating securities (43) (41)
Subtotal $ (512) $ (1,014)
Weighted average common shares outstanding (in shares) 14,644 11,423
Basic and diluted loss per share (in dollars per share) $ (0.03) $ (0.09)