v3.26.1
Segment Information - Net sales and significant expense (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Segment Information    
Net sales $ 277.8 $ 285.5
Cost of sales 229.2 232.8
Gross profit 48.6 52.7
Selling, general and administrative expenses 27.5 28.8
Restructuring expenses 1.7 3.5
Operating income 19.4 20.4
Heavy-Duty Equipment    
Segment Information    
Net sales 132.7 132.7
Commercial Vehicle    
Segment Information    
Net sales 81.0 86.9
Automotive    
Segment Information    
Net sales 64.1 65.9
Operating segments | Heavy-Duty Equipment    
Segment Information    
Net sales 138.1 135.9
Cost of sales 115.8 109.7
Gross profit 22.3 26.2
Selling, general and administrative expenses 13.2 12.4
Restructuring expenses 1.2 2.4
Operating income 7.9 11.4
Operating segments | Commercial Vehicle    
Segment Information    
Net sales 81.9 89.7
Cost of sales 62.0 72.4
Gross profit 19.9 17.3
Selling, general and administrative expenses 7.4 9.7
Restructuring expenses 0.5 0.9
Operating income 12.0 6.7
Operating segments | Automotive    
Segment Information    
Net sales 65.0 66.5
Cost of sales 58.6 57.3
Gross profit 6.4 9.2
Selling, general and administrative expenses 6.9 6.7
Restructuring expenses   0.2
Operating income (0.5) 2.3
Intersegment Eliminations    
Segment Information    
Net sales (7.2) (6.6)
Cost of sales (7.2) (6.6)
Intersegment Eliminations | Heavy-Duty Equipment    
Segment Information    
Net sales 5.4 3.2
Intersegment Eliminations | Commercial Vehicle    
Segment Information    
Net sales 0.9 2.8
Intersegment Eliminations | Automotive    
Segment Information    
Net sales $ 0.9 $ 0.6