CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Current assets
Cash and cash equivalents	$ 733,369	$ 658,274
Short-term marketable securities	390,492	911,764
Accounts receivable, net of allowance for expected credit losses ($8,403 and $5,162, respectively)	163,019	163,758
Inventories	142,102	85,544
Derivative asset	984	124,789
Short-term restricted cash	2,287	382,596
Prepaid expenses and other current assets	78,584	132,621
Total current assets	1,510,837	2,459,346
Property, plant and equipment, net	210,940	154,470
Long-term marketable securities	169,422	352,020
Long-term deferred tax assets	599	1,169
Goodwill	793,623	513,623
Intangible assets, net	312,055	178,401
Other assets	71,940	57,093
Total assets	3,069,416	3,716,122
Current liabilities
Accounts payable	37,990	38,654
Deferred revenue	45,207	39,748
Accrued warranty and retrofit costs	6,258	2,890
Accrued compensation and benefits	33,848	41,898
Accrued income taxes payable	2,571	28,419
Accrued expenses and other current liabilities	77,753	78,937
Total current liabilities	203,627	230,546
Long-term tax reserves	1,738	1,684
Long-term deferred tax liabilities	65,700	64,555
Long-term pension liabilities	288	261
Long-term operating lease liabilities	61,799	49,227
Other long-term liabilities	12,764	6,463
Total liabilities	345,916	352,736
Stockholders' equity
Preferred stock, $0.01 par value - 1,000,000 shares authorized, no shares issued or outstanding
Common stock, $0.01 par value - 125,000,000 shares authorized, 74,656,860 shares issued and 61,194,991 shares outstanding at June 30, 2023, 88,482,125 shares issued and 75,020,256 shares outstanding at September 30, 2022	747	885
Additional paid-in capital	1,323,215	1,992,017
Accumulated other comprehensive loss	(37,145)	(83,916)
Treasury stock, at cost - 13,461,869 shares at June 30, 2023 and September 30, 2022	(200,956)	(200,956)
Retained earnings	1,637,639	1,655,356
Total stockholders' equity	2,723,500	3,363,386
Total liabilities and stockholders' equity	$ 3,069,416	$ 3,716,122