CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 60,899	$ 59,038
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	5,806	5,533
Stock-based compensation expense	3,062	3,258
Inventory impairments and abandonments	0	301
Deferred and other income tax expense	7,920	9,225
(Gain) loss on disposal of fixed assets	(194)	1,265
Gain on sale of investment	(8,591)	0
Loss on extinguishment of debt, net	437	515
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	(8,628)	7,429
(Increase) decrease in income tax receivable	(246)	9,667
Increase in inventory	(299,116)	(2,275)
Decrease (increase) in other assets	4,350	(1,755)
Increase (decrease) in trade accounts payable	14,413	(18,401)
Decrease in other liabilities	(19,685)	(33,532)
Net cash (used in) provided by operating activities	(239,573)	40,268
Cash flows from investing activities:
Capital expenditures	(11,501)	(7,824)
Proceeds from sale of fixed assets	194	52
Purchases of investment securities	(7,454)	0
Other	0	(2)
Net cash used in investing activities	(18,761)	(7,774)
Cash flows from financing activities:
Repayment of debt	(202,195)	0
Proceeds from issuance of debt	250,000	0
Repayment of borrowings from credit facility	(115,000)	0
Borrowings from credit facility	115,000	0
Debt issuance costs	(5,162)	(2,575)
Tax payments for stock-based compensation awards	(5,220)	(2,597)
Stock option exercises	16	0
Net cash provided by (used in) financing activities	37,439	(5,172)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(220,895)	27,322
Cash, cash equivalents, and restricted cash at beginning of period	386,289	251,828
Cash, cash equivalents, and restricted cash at end of period	$ 165,394	$ 279,150