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Note 2 - Income (Loss) Per Share - Basic and Diluted Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Net loss $ 3,113 $ (2,452) $ (55,844) $ (13,889)
Weighted average shares outstanding (in shares) 79,898,219 78,441,740 79,620,308 77,866,621
Weighted average restricted shares vested not delivered (in shares) 1,694,097 1,691,666 1,707,331 1,887,041
Total basic weighted average shares outstanding (in shares) 81,592,316 80,133,406 81,327,639 79,753,662
Total diluted weighted average shares outstanding (in shares) 81,699,966 80,133,406 81,327,639 79,753,662
Basic (in dollars per share) $ 0.04 $ (0.03) $ (0.69) $ (0.17)
Diluted (in dollars per share) $ 0.04 $ (0.03) $ (0.69) $ (0.17)
Restricted Stock Units (RSUs) [Member]        
Dilutive effect of assumed conversion of restricted stock units (in shares) 107,650 0 0 0