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Note 2 - Income Per Share - Basic and Diluted Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Net income $ 408 $ 1,045
Weighted average shares outstanding (in shares) 75,771,019 75,621,360
Weighted average restricted shares vested not delivered (in shares) 2,833,261 3,476,066
Total basic weighted average shares outstanding (in shares) 78,604,280 79,097,426
Dilutive effect of assumed conversion of restricted stock units (in shares) 149,490 769,495
Dilutive effect of assumed conversion of warrants (in shares) 197,068
Total diluted weighted average shares outstanding (in shares) 78,753,770 80,063,989
Basic (in dollars per share) $ 0.01 $ 0.01
Diluted (in dollars per share) $ 0.01 $ 0.01