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Earnings per share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Earnings per share [Abstract]        
Net income (loss) $ 15 $ (551) $ (109) $ (1,906)
Shares [Abstract]        
Basic: Weighted average common shares outstanding (in shares) 10,103,000 10,006,000 10,077,000 9,992,000
Add: Dilutive effect of outstanding options and restricted stock units as determined by the treasury stock method (in shares) 54,000 0 0 0
Diluted: Weighted average common and common equivalent shares outstanding (in shares) 10,157,000 10,006,000 10,077,000 9,992,000
Net income (loss) per common share [Abstract]        
Basic (in dollars per share) $ 0 $ (0.06) $ (0.01) $ (0.19)
Diluted (in dollars per share) $ 0 $ (0.06) $ (0.01) $ (0.19)
Stock Awards [Member]        
Earnings per share [Abstract]        
Anti-dilutive securities excluded from computation of earnings per dilutive share (in shares) 1,600 1,600 1,800 1,500