CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Current assets
Cash and cash equivalents	$ 667,365	$ 658,274
Short-term marketable securities	513,651	911,764
Accounts receivable, net of allowance for expected credit losses ($7,696 and $5,162, respectively)	167,960	163,758
Inventories	150,727	85,544
Derivative asset	1,278	124,789
Short-term restricted cash	4,021	382,596
Prepaid expenses and other current assets	80,732	132,621
Total current assets	1,585,734	2,459,346
Property, plant and equipment, net	215,301	154,470
Long-term marketable securities	266,176	352,020
Long-term deferred tax assets	490	1,169
Goodwill	790,494	513,623
Intangible assets, net	323,927	178,401
Other assets	67,692	57,093
Total assets	3,249,814	3,716,122
Current liabilities
Accounts payable	45,306	38,654
Deferred revenue	46,048	39,748
Accrued warranty and retrofit costs	5,380	2,890
Accrued compensation and benefits	27,632	41,898
Accrued income taxes payable	5,228	28,419
Accrued expenses and other current liabilities	83,050	78,937
Total current liabilities	212,644	230,546
Long-term tax reserves	1,720	1,684
Long-term deferred tax liabilities	70,104	64,555
Long-term pension liabilities	280	261
Long-term operating lease liabilities	57,137	49,227
Other long-term liabilities	12,702	6,463
Total liabilities	354,587	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, 82,602,702 shares issued and 69,147,387 shares outstanding at March 31, 2023, 88,482,125 shares issued and 75,020,256 shares outstanding at September 30, 2022	826	885
Additional paid-in capital	1,495,118	1,992,017
Accumulated other comprehensive loss	(38,870)	(83,916)
Treasury stock, at cost - 13,461,869 shares at March 31, 2023 and September 30, 2022	(200,956)	(200,956)
Retained earnings	1,639,109	1,655,356
Total stockholders' equity	2,895,227	3,363,386
Total liabilities and stockholders' equity	$ 3,249,814	$ 3,716,122