CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Mar. 31, 2024		Dec. 31, 2023
Current assets:
Cash and cash equivalents		$ 707,403		$ 757,571
Marketable securities		41,300		62,154
Accounts receivable, less allowance for credit losses of $1,947 and $1,988 at March 31, 2024 and December 31, 2023, respectively		426,333		422,124
Inventories, net	[1]	314,232		309,974
Prepayments	[2]	537,642		548,970
Other current assets		16,057		37,992
Current assets held for sale		22,426		23,250
Total current assets		2,065,393		2,162,035
Property, plant and equipment, net		457,248		445,492
Operating lease right-of-use assets, net		74,625		73,417
Marketable securities		121,905		117,434
Deferred tax assets		185,734		175,775
Retirement plans assets		11,449		11,504
Other assets		45,098		38,580
Acquired intangible assets, net		30,234		35,404
Goodwill		407,576		415,652
Long-term assets held for sale		11,458		11,531
Total assets		3,410,720	[3]	3,486,824
Current liabilities:
Accounts payable		153,873		180,131
Accrued employees' compensation and withholdings		121,144		191,750
Deferred revenue and customer advances		100,058		99,804
Other accrued liabilities		101,275		114,712
Operating lease liabilities		17,400		17,522
Income taxes payable		55,922		48,653
Current liabilities held for sale		4,687		7,379
Total current liabilities		554,359		659,951
Retirement plans liabilities		134,878		132,090
Long-term deferred revenue and customer advances		35,044		37,282
Long-term other accrued liabilities		16,653		19,998
Deferred tax liabilities		134		183
Long-term operating lease liabilities		65,554		65,092
Long-term incomes taxes payable		44,331		44,331
Long-term liabilities held for sale		1,938		2,000
Total liabilities		852,891		960,927
Commitments and contingencies (Note Q)
SHAREHOLDERS' EQUITY
Common stock, $0.125 par value, 1,000,000 shares authorized; 153,757 and 152,698 shares issued and outstanding at March 31, 2024 and December 31, 2023, respectively		19,220		19,087
Additional paid-in capital		1,848,088		1,827,274
Accumulated other comprehensive loss		(39,739)		(26,978)
Retained earnings		730,260		706,514
Total shareholders' equity		2,557,829		2,525,897
Total liabilities and shareholders' equity		$ 3,410,720		$ 3,486,824

[1] Inventories, net at March 31, 2024 and December 31, 2023 excludes $19.3 million and $18.0 million, respectively, of primarily work-in-process inventories, net classified as assets held for sale. See Note E: "Assets held for sale" for additional information.

[2] Excludes $3.2 million and $5.3 million at March 31, 2024 and December 31, 2023, respectively, of contract manufacturer and supplier prepayments, classified as assets held for sale. See Note E: “Assets held for sale” for additional information.

[3] Total assets are attributable to each segment. Semiconductor Test includes $33.9 million of total assets classified as assets held for sale. See Note E: "Assets held for sale" for additional information. Corporate assets consist of cash and cash equivalents, marketable securities, and certain other assets.