CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Total revenue	$ 2,316,988	$ 2,140,303	$ 2,127,077
Home construction and land sales expenses	1,776,518	1,735,195	1,776,534
Inventory impairments and abandonments	2,963	853	2,903
Gross profit	537,507	404,255	347,640
Commissions	74,336	80,125	82,507
General and administrative expenses	177,320	163,285	170,386
Depreciation and amortization	13,360	13,976	15,640
Operating income	272,491	146,869	79,107
Equity in income of unconsolidated entities	521	594	347
Gain (loss) on extinguishment of debt, net	309	(2,025)	0
Other income (expense), net	668	(1,712)	(8,165)
Income from continuing operations before income taxes	273,989	143,726	71,289
Expense from income taxes	53,271	21,546	17,973
Income from continuing operations	220,718	122,180	53,316
Loss from discontinued operations, net of tax	(14)	(159)	(1,090)
Net income	$ 220,704	$ 122,021	$ 52,226
Weighted-average number of shares:
Basic (in shares)	30,432	29,954	29,704
Diluted (in shares)	30,796	30,437	29,948
Basic income (loss) per share:
Continuing operations (in dollars per share)	$ 7.25	$ 4.08	$ 1.80
Discontinued operations (in dollars per share)	0	(0.01)	(0.04)
Total (in dollars per share)	7.25	4.07	1.76
Diluted income (loss) per share:
Continuing operations (in dollars per share)	7.17	4.01	1.78
Discontinued operations (in dollars per share)	0	0	(0.04)
Total (in dollars per share)	$ 7.17	$ 4.01	$ 1.74