CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current assets
Cash and cash equivalents	$ 1,474,189	$ 227,427
Marketable securities	709,063	81
Accounts receivable, net of allowance for expected credit losses ($4,326 and $4,318, respectively)	150,274	119,877
Inventories	81,213	60,398
Prepaid expenses and other current assets	160,557	58,198
Current assets held for sale		311,385
Total current assets	2,575,296	777,366
Property, plant and equipment, net	154,596	130,719
Long-term marketable securities	312,027	3,598
Long-term deferred tax assets	1,926	10,043
Goodwill	464,885	469,356
Intangible assets, net	160,691	186,534
Other assets	53,296	58,068
Non-current assets held for sale		183,828
Total assets	3,722,717	1,819,512
Current liabilities
Accounts payable	34,576	42,360
Deferred revenue	33,132	25,724
Accrued warranty and retrofit costs	2,524	2,330
Accrued compensation and benefits	44,279	33,183
Accrued restructuring costs	169	304
Accrued income taxes payable	7,095	8,711
Accrued expenses and other current liabilities	73,152	103,537
Current liabilities held for sale		128,939
Total current liabilities	194,927	345,088
Long-term debt		49,677
Long-term tax reserves	1,681	1,973
Long-term deferred tax liabilities	44,286	13,030
Long-term pension liabilities	698	705
Long-term operating lease liabilities	46,719	45,088
Other long-term liabilities	6,620	6,173
Non-current liabilities held for sale		32,444
Total liabilities	294,931	494,178
Commitments and contingencies (Note 16)
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, 88,451,223 shares issued and 74,989,354 shares outstanding at June 30, 2022, 87,808,922 shares issued and 74,347,053 shares outstanding at September 30, 2021	885	878
Additional paid-in capital	1,990,281	1,976,112
Accumulated other comprehensive income	(38,493)	19,351
Treasury stock, at cost - 13,461,869 shares at June 30, 2022 and September 30, 2021	(200,956)	(200,956)
Retained earnings (accumulated deficit)	1,676,069	(470,051)
Total stockholders' equity	3,427,786	1,325,334
Total liabilities and stockholders' equity	$ 3,722,717	$ 1,819,512