CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (20,612)	$ (13,987)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	9,443	12,208
Equity-based awards	4,941	4,258
Loss on asset disposals	227	200
Non-cash interest expense	2,050	2,163
Deferred income tax provision	(7,992)	(5,104)
Change in fair value of contingent consideration	203	308
Net losses recognized during the period on equity securities	61	46
Loss on disposition of business	965	0
Restructuring and impairment	12,901	0
(Increase) decrease in assets:
Accounts receivable	(9,045)	(15,540)
Inventories	(30,352)	(11,363)
Prepaid expenses and other current assets	8,536	22,417
Other assets	(545)	(1,182)
Increase (decrease) in liabilities:
Accounts payable	(2,286)	13,163
Other payables and accrued expenses	(1,465)	1,907
Customer deposits	9,126	(18,475)
Net cash used in operating activities	(23,844)	(8,981)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment and construction in progress	(4,203)	(7,360)
Proceeds from disposal of property and equipment	40	311
Cash used for additions to intangible assets	(311)	(284)
Cash received in acquisitions	0	713
Proceeds from disposal of a business	48,735	0
Net cash provided by (used in) investing activities	44,261	(6,620)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings from floor plan	53,385	65,639
Proceeds from long-term debt	14,401	20,265
Payments on long-term debt	(72,754)	(17,258)
Payments of debt issuance costs	(2,528)	(935)
Payments of contingent consideration	0	(2,419)
Payments of tax withholdings for equity-based awards	(1,558)	(1,823)
Proceeds from issuance of Class A common stock as part of employee stock purchase plan	438	535
Distributions to members	0	(186)
Payments on financing lease obligations	(116)	0
Net cash (used in) provided by financing activities	(8,732)	63,818
Effects of exchange rate changes on cash and restricted cash	17	(1)
Net change in cash and restricted cash	11,702	48,216
Cash and restricted cash at beginning of period	64,820	27,337
Cash and restricted cash at end of period	76,522	75,553
Supplemental cash flow disclosures:
Cash paid for interest	27,799	30,908
Cash paid (received) for income taxes and income tax refunds	405	(104)
Noncash items:
Purchase of property and equipment funded by long-term debt	340	151
Right-of-use assets obtained in exchange for new lease liabilities	$ 2,370	$ 5,881