Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Total revenue	$ 570,932	$ 533,112	$ 1,549,360	$ 1,440,329
Home construction and land sales expenses	455,178	441,788	1,259,922	1,207,023
Inventory impairments and abandonments	231	2,266	696	2,266
Gross profit	115,523	89,058	288,742	231,040
Commissions	20,955	20,851	58,346	55,660
General and administrative expenses	42,186	41,276	119,903	121,025
Depreciation and amortization	3,689	3,780	10,494	10,834
Operating income	48,693	23,151	99,999	43,521
Equity in income of unconsolidated entities	313	4	424	138
Loss on extinguishment of debt	(1,050)	0	(1,613)	0
Other expense, net	(10)	(2,904)	(2,356)	(6,030)
Income from continuing operations before income taxes	47,946	20,251	96,454	37,629
Expense from income taxes	10,804	4,981	22,633	8,940
Income from continuing operations, net of tax	37,142	15,270	73,821	28,689
Loss from discontinued operations, net of tax	(7)	(82)	(161)	(141)
Net income	$ 37,135	$ 15,188	$ 73,660	$ 28,548
Weighted average number of shares:
Basic (in shares)	30,022	29,597	29,915	29,738
Diluted (in shares)	30,562	29,674	30,292	30,014
Basic income (loss) per share:
Continuing Operations (in USD per share)	$ 1.24	$ 0.51	$ 2.47	$ 0.96
Discontinued operations (in USD per share)	0	0	(0.01)	0
Total (in USD per share)	1.24	0.51	2.46	0.96
Diluted income (loss) per share:
Continuing operations (in USD per share)	1.22	0.51	2.44	0.95
Discontinued operations (in USD per share)	0	0	(0.01)	0
Total (in USD per share)	$ 1.22	$ 0.51	$ 2.43	$ 0.95