v3.26.1
Income Attributable to Tennant Company Per Share - Narrative (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Antidilutive securities (in shares) 21,850 278,450 253,430 157,775