CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income	$ 102,855	$ 133,881
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	8,440	9,101
Stock-based compensation expense	5,247	6,515
Inventory impairments and abandonments	616	935
Deferred and other income tax expense	15,466	29,683
Loss (gain) on disposal of fixed assets	1,178	(252)
Change in allowance for doubtful accounts	0	(6)
Loss on extinguishment of debt, net	533	78
Changes in operating assets and liabilities:
Decrease in accounts receivable	2,695	554
Decrease in income tax receivable	9,987	0
Increase in inventory	(1,228)	(351,424)
Increase in other assets	(5,346)	(4,614)
(Decrease) increase in trade accounts payable	(6,828)	12,473
Decrease in other liabilities	(37,783)	(1,428)
Net cash provided by (used in) operating activities	95,832	(164,504)
Cash flows from investing activities:
Capital expenditures	(14,122)	(11,192)
Proceeds from sale of fixed assets	143	257
Purchases of investment securities	(7,838)	0
Other	(2)	0
Net cash used in investing activities	(21,819)	(10,935)
Cash flows from financing activities:
Repayment of debt	(4,998)	(7,750)
Repayment of borrowings from credit facility	0	(80,000)
Borrowings from credit facility	0	80,000
Debt issuance costs	(2,575)	0
Repurchase of common stock	0	(2,527)
Tax payments for stock-based compensation awards	(2,615)	(6,631)
Stock option exercises	12	5
Net cash used in financing activities	(10,176)	(16,903)
Net increase (decrease) in cash, cash equivalents, and restricted cash	63,837	(192,342)
Cash, cash equivalents, and restricted cash at beginning of period	251,828	274,143
Cash, cash equivalents, and restricted cash at end of period	$ 315,665	$ 81,801