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Note 2 - (Loss) Income Per Share - Calculation of Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Numerators:            
(Loss) income from continuing operations $ (23,168)   $ 5,245   $ (26,252) $ 9,003
Income from discontinued operations 825   826   1,696 1,501
Net Income (Loss) Attributable to Parent, Total $ (22,343) $ (2,213) $ 6,071 $ 4,433 $ (24,556) $ 10,504
Denominator:            
Denominator for basic (loss) income per share – weighted-average shares (in shares) 17,089   18,438   17,584 18,410
Effect of dilutive securities:            
Equivalent shares issuable upon conversion of unvested restricted shares (in shares) 0   168   0 160
Diluted weighted average shares outstanding (in shares) 17,089   18,606   17,584 18,570
Basic and diluted (loss) income per share:            
(Loss) income from continuing operations (in dollars per share) $ (1.36)   $ 0.28   $ (1.49) $ 0.49
Income from discontinued operations (in dollars per share) 0.05   0.04   0.10 0.08
Net (loss) income (1) (in dollars per share) [1] $ (1.31)   $ 0.33   $ (1.40) $ 0.57
[1] Sum of the individual amounts may not add due to rounding.