Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefits	$ 20,443		$ 43,793
Customer deposits	21,077		14,260
Accrued interest	23,327		23,211
Warranty reserves	11,202	$ 11,900	13,564	$ 11,554	$ 12,005	$ 12,717
Litigation accruals	27,607		9,930
Income tax liabilities	0		32
Obligations related to land not owned under option agreements	21,691		0
Other	52,981		55,655
Total	$ 178,328		$ 160,445