CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (12,479)	$ 38,465
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	10,470	12,542
Equity-based awards	4,669	5,063
Loss on asset disposals	109	210
Non-cash interest expense	1,665	3,077
Deferred income tax provision	2,837	1,453
Change in fair value of contingent consideration	1,928	327
Loss on equity investment	135	280
(Increase) decrease in assets:
Accounts receivable	(38,464)	(22,893)
Inventories	(77,606)	(214,150)
Prepaid expenses and other current assets	10,848	11,181
Other assets	4,697	(1,812)
Increase (decrease) in liabilities:
Accounts payable	10,735	5,726
Other payables and accrued expenses	(760)	(1,288)
Customer deposits	(5,112)	(7,440)
Net cash used in operating activities	(86,328)	(169,259)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment and construction in progress	(14,823)	(12,029)
Proceeds from disposal of property and equipment	119	287
Cash used for additions to intangible assets	(621)	(26)
Cash used in acquisitions, net of cash acquired	0	(28,611)
Proceeds from disposal of a business	45,100	0
Net cash provided by (used in) investing activities	29,775	(40,379)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings from floor plan	90,671	216,063
Proceeds from long-term debt	20,000	30,000
Payments on long-term debt	(58,864)	(11,874)
Payments of debt issuance costs	(695)	0
Payments of contingent consideration	(5,888)	(11,787)
Payments of tax withholdings for equity-based awards	(1,883)	(1,140)
Proceeds from issuance of Class A common stock as part of employee stock purchase plan	732	1,063
Distributions to members	(3,800)	(391)
Purchase of non-controlling interest	(18,840)	0
Repurchase and retirement of Class A common stock	0	(1,579)
Net cash provided by financing activities	21,433	220,355
Effects of exchange rate changes on cash and restricted cash	(5)	19
Net change in cash	(35,125)	10,736
Cash and restricted cash at beginning of period	93,310	60,947
Cash and restricted cash at end of period	58,185	71,683
Supplemental cash flow disclosures:
Cash paid for interest	33,016	23,362
Cash paid for income taxes	5,852	13,388
Noncash items:
Acquisition purchase price funded by contingent consideration	0	2,550
Purchase of property and equipment funded by long-term debt	156	1,053
Right-of-use assets obtained in exchange for new operating lease liabilities	5,342	7,978
Acquisition purchase price funded by affiliate financing	0	10,600
Settlement of affiliate financing with proceeds from sale and leaseback	$ 0	$ 10,600