CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income	$ 15,584	$ 88,109
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	13,273	9,698
Stock-based compensation expense	5,442	5,536
Inventory impairments and abandonments	10,867	200
(Benefit) expense from income taxes	(756)	10,373
Gain on disposal of fixed assets	(192)	(350)
Gain on sale of investment	0	(8,591)
Loss on extinguishment of debt, net	0	437
Changes in operating assets and liabilities:
Increase in accounts receivable	(10,701)	(18,968)
Increase in income tax receivable	(1,532)	(1,675)
Increase in inventory	(258,908)	(412,665)
Increase in other assets	(4,377)	(1,374)
Increase in trade accounts payable	20,139	34,616
Decrease in other liabilities	(7,035)	(28,327)
Net cash used in operating activities	(218,196)	(322,981)
Cash flows from investing activities:
Capital expenditures	(21,027)	(16,691)
Proceeds from sale of fixed assets	192	352
Purchases of investment securities	(965)	(7,536)
Proceeds from maturities of investment securities	9,144	0
Net cash used in investing activities	(12,656)	(23,875)
Cash flows from financing activities:
Repayment of debt	0	(202,195)
Proceeds from issuance of debt	0	250,000
Repayment of borrowings from credit facility	(260,000)	(150,000)
Borrowings from credit facility	375,000	195,000
Debt issuance costs	(230)	(5,653)
Repurchase of common stock	(33,077)	(12,928)
Tax payments for stock-based compensation awards	(3,136)	(5,237)
Stock option exercises	107	16
Net cash provided by financing activities	78,664	69,003
Net decrease in cash, cash equivalents, and restricted cash	(152,188)	(277,853)
Cash, cash equivalents, and restricted cash at beginning of period	242,610	386,289
Cash, cash equivalents, and restricted cash at end of period	$ 90,422	$ 108,436