CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net income (loss)	$ (16,162)	$ 2,163,193
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	42,140	26,005
Stock-based compensation	6,096	7,230
Contingent consideration adjustment	(17,145)	600
Amortization of deferred financing costs		66
Amortization of premium on marketable securities and deferred financing costs	(5,284)
Deferred income taxes	(20,843)	11,054
Loss on extinguishment of debt		632
Purchase accounting impact on inventory	5,781
(Gain) loss on disposals of property, plant and equipment	31	(30)
Gain on divestiture, net of tax		(2,130,351)
Fees paid stemming from divestiture		(52,461)
Changes in operating assets and liabilities, net of acquisitions and divestiture:
Accounts receivable	23,925	(456)
Inventories	(11,504)	(55,033)
Accounts payable	(5,677)	(7,906)
Deferred revenue	3,625	5,215
Accrued warranty and retrofit costs	622	(198)
Accrued compensation and tax withholdings	(21,797)	10,875
Accrued restructuring costs	820	(113)
Other current assets and liabilities	(23,798)	(34,061)
Net cash used in operating activities	(39,170)	(55,739)
Cash flows from investing activities
Purchases of property, plant and equipment	(21,705)	(44,326)
Purchases of technology intangibles		(4,000)
Purchases of marketable securities	(233,584)	(1,074,428)
Sales and maturities of marketable securities	728,171	3,710
Net Investment hedge settlement	29,313
Proceeds from divestiture, net of cash transferred		2,927,245
Acquisitions, net of cash acquired	(387,665)
Net cash provided by investing activities	114,530	1,808,201
Cash flows from financing activities
Proceeds from issuance of common stock		3,461
Payments of financing costs		(312)
Principal payments on debt		(49,725)
Common stock dividends paid		(7,494)
Payment for contingent consideration related to acquisition		(9,400)
Payments of finance leases	(230)
Stock repurchase	(500,000)
Withholding tax payments on net share settlements on equity awards	(4,906)
Net cash used in financing activities	(505,136)	(63,470)
Effects of exchange rate changes on cash and cash equivalents	60,355	(25,372)
Net decrease in cash, cash equivalents and restricted cash	(369,421)	1,663,620
Cash, cash equivalents and restricted cash, beginning of period	1,041,296	285,333
Cash, cash equivalents and restricted cash, end of period	671,875	1,948,953
Supplemental disclosures:
Cash paid for income taxes, net	$ 35,286	$ 20,782