CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
Total revenue	$ 409,846	$ 565,339	$ 773,337	$ 1,034,292
Home construction and land sales expenses	359,851	478,813	683,768	875,688
Inventory impairments and abandonments	1,295	528	3,665	528
Gross profit	48,700	85,998	85,904	158,076
Commissions	13,390	18,783	25,406	34,896
General and administrative expenses	50,194	49,199	103,183	98,971
Depreciation and amortization	4,084	4,647	8,126	8,702
Operating income (loss)	(18,968)	13,369	(50,811)	15,507
Other income, net	433	799	1,211	1,827
Loss before income taxes	(18,535)	14,168	(49,600)	17,334
(Benefit) expense from income taxes	(17,631)	1,390	(16,099)	1,426
Net (loss) income	$ (904)	$ 12,778	$ (33,501)	$ 15,908
Weighted-average number of shares:
Basic (in shares)	27,990	30,119	28,464	30,274
Diluted (in shares)	27,990	30,265	28,464	30,479
(Loss) income per share:
Basic (in USD per share)	$ (0.03)	$ 0.42	$ (1.18)	$ 0.53
Diluted (in USD per share)	$ (0.03)	$ 0.42	$ (1.18)	$ 0.52