CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Total revenue	$ 2,206,785	$ 2,316,988	$ 2,140,303
Home construction and land sales expenses	1,763,449	1,776,518	1,735,195
Inventory impairments and abandonments	641	2,963	853
Gross profit	442,695	537,507	404,255
Commissions	73,450	74,336	80,125
General and administrative expenses	179,794	177,320	163,285
Depreciation and amortization	12,198	13,360	13,976
Operating income	177,253	272,491	146,869
(Loss) gain on extinguishment of debt, net	(546)	309	(2,025)
Other income (expense), net	5,939	1,189	(1,118)
Income from continuing operations before income taxes	182,646	273,989	143,726
Expense from income taxes	23,958	53,271	21,546
Income from continuing operations	158,688	220,718	122,180
Loss from discontinued operations, net of tax	(77)	(14)	(159)
Net income	$ 158,611	$ 220,704	$ 122,021
Weighted-average number of shares:
Basic (in shares)	30,353	30,432	29,954
Diluted (in shares)	30,747	30,796	30,437
Basic income (loss) per share:
Continuing operations (in dollars per share)	$ 5.23	$ 7.25	$ 4.08
Discontinued operations (in dollars per share)	0	0	(0.01)
Total (in dollars per share)	5.23	7.25	4.07
Diluted income per share:
Continuing operations (in dollars per share)	5.16	7.17	4.01
Discontinued operations (in dollars per share)	0	0	0
Total (in dollars per share)	$ 5.16	$ 7.17	$ 4.01