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Earnings Per Share - Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Net income (loss) attributable to Quaker Chemical Corporation $ 26,835 $ (66,580) $ 46,504 $ (53,658)
Less: (income) loss allocated to participating securities (127) 82 (153) 90
Net income (loss) available to common shareholders $ 26,708 $ (66,498) $ 46,351 $ (53,568)
Basic weighted average common shares outstanding (in shares) 17,109,417 17,572,447 17,217,771 17,605,920
Effect of dilutive securities (in shares) 90,249 20,524 81,511 24,621
Diluted weighted average common shares outstanding (in shares) 17,199,666 17,592,971 17,299,282 17,630,541
Diluted earnings per common share (in dollars per share) $ 1.55 $ (3.78) $ 2.68 $ (3.04)