CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Statement [Abstract]
Revenues	$ 273.0	$ 250.4
Cost of sales	218.0	195.4
Selling, general and administrative expense	36.5	36.0
Equity in earnings of unconsolidated ventures	0.0	(0.6)
Interest and other income	(2.3)	(2.3)
Income before income taxes	20.8	21.9
Income tax expense	5.4	5.4
Net income	$ 15.4	$ 16.5
Basic net income per common share	$ 0.30	$ 0.32
Weighted average number of common shares	50,997,187	50,820,797
Diluted net income per common share	$ 0.30	$ 0.32
Adjusted weighted average number of common shares	51,181,204	51,085,919