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Note 2 - Income Per Share - Calculation of Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Numerators:    
Income from continuing operations $ 6,563 $ 3,824
Income from discontinued operations 0 150
Net income (loss) $ 6,563 $ 3,974
Denominator:    
Denominator for basic income per share – weighted-average shares (in shares) 26,538 26,174
Effect of dilutive securities:    
Diluted weighted average shares outstanding (in shares) 27,877 27,600
Basic income per share: (1)    
Income from continuing operations (in dollars per share) $ 0.25 $ 0.15
Income from discontinued operations (in dollars per share) 0 0.01
Net income per share (in dollars per share) [1] 0.25 0.15
Diluted income per share: (1)    
Income from continuing operations (in dollars per share) 0.24 0.14
Income from discontinued operations (in dollars per share) 0 0.01
Net income per share (in dollars per share) [1] $ 0.24 $ 0.14
Restricted Stock [Member]    
Effect of dilutive securities:    
Equivalent shares issuable upon conversion of unvested restricted shares (in shares) 129 158
Share-Based Payment Arrangement, Option [Member]    
Effect of dilutive securities:    
Equivalent shares issuable upon conversion of unvested restricted shares (in shares) 1,210 1,268
[1] Total may not sum due to rounding.