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Earnings per share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Earnings per share [Abstract]    
Net (loss) income $ (1,036) $ 3,139
Shares [Abstract]    
Basic: Weighted average common shares outstanding (in shares) 9,972 9,930
Add: Dilutive effect of outstanding options and restricted stock units as determined by the treasury stock method (in shares) 0 113
Diluted: Weighted average common and common equivalent shares outstanding (in shares) 9,972 10,043
Net (loss) income per common share [Abstract]    
Basic (in dollars per share) $ (0.1) $ 0.32
Diluted (in dollars per share) $ (0.1) $ 0.31
Stock Awards [Member]    
Earnings per share [Abstract]    
Anti-dilutive securities excluded from computation of earnings per dilutive share (in shares) 89