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Note 2 - Significant Accounting Policies - Basic and Diluted Earnings (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Net loss attributable to common stockholders $ (2,687) $ (1,318)
Less: income attributable to participating securities 322 162
Subtotal $ (3,009) $ (1,480)
Weighted-average common shares outstanding (in shares) 16,063 16,063
Basic and diluted net loss per share attributable to common stockholders (in dollars per share) $ (0.19) $ (0.09)