CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Total revenue	$ 543,908	$ 508,506	$ 988,836	$ 962,655
Home construction and land sales expenses	440,901	387,821	799,871	744,570
Inventory impairments and abandonments	111	935	301	935
Gross profit	102,896	119,750	188,664	217,150
Commissions	18,305	16,578	32,410	32,391
General and administrative expenses	42,779	45,530	83,427	83,297
Depreciation and amortization	3,020	3,031	5,533	5,912
Operating income	38,792	54,611	67,294	95,550
Loss on extinguishment of debt, net	0	(164)	(515)	(164)
Other income, net	1,007	303	1,583	722
Income from continuing operations before income taxes	39,799	54,750	68,362	96,108
Expense from income taxes	5,092	10,072	9,247	16,535
Income from continuing operations	34,707	44,678	59,115	79,573
Loss from discontinued operations, net of tax	0	(6)	(77)	(16)
Net income	$ 34,707	$ 44,672	$ 59,038	$ 79,557
Weighted-average number of shares:
Basic (in shares)	30,394	30,594	30,464	30,464
Diluted (in shares)	30,610	30,823	30,702	30,772
Basic income per share:
Continuing operations (in USD per share)	$ 1.14	$ 1.46	$ 1.94	$ 2.61
Discontinued operations (in USD per share)	0	0	0	0
Total (in USD per share)	1.14	1.46	1.94	2.61
Diluted income per share:
Continuing operations (in USD per share)	1.13	1.45	1.93	2.59
Discontinued operations (in USD per share)	0	0	0	0
Total (in USD per share)	$ 1.13	$ 1.45	$ 1.93	$ 2.59