CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jun. 30, 2024		Dec. 31, 2023
Current assets:
Cash and cash equivalents		$ 421,904		$ 757,571
Marketable securities		38,654		62,154
Accounts receivable, less allowance for credit losses of $1,944 and $1,988 at June 30, 2024 and December 31, 2023, respectively		470,297		422,124
Inventories, net	[1]	288,748		309,974
Prepayments	[2]	515,906		548,970
Other current assets		20,884		37,992
Current assets held for sale		0		23,250
Total current assets		1,756,393		2,162,035
Property, plant and equipment, net		472,457		445,492
Operating lease right-of-use assets, net		72,381		73,417
Marketable securities		123,723		117,434
Deferred tax assets		192,901		175,775
Retirement plans assets		11,293		11,504
Equity method investment		524,060		0
Other assets		47,923		38,580
Acquired intangible assets, net		25,465		35,404
Goodwill		405,110		415,652
Long-term assets held for sale		0		11,531
Total assets		3,631,706	[3]	3,486,824
Current liabilities:
Accounts payable		160,808		180,131
Accrued employees' compensation and withholdings		161,187		191,750
Deferred revenue and customer advances		102,988		99,804
Other accrued liabilities		108,746		114,712
Operating lease liabilities		18,280		17,522
Income taxes payable		74,365		48,653
Current liabilities held for sale		0		7,379
Total current liabilities		626,374		659,951
Retirement plans liabilities		135,167		132,090
Long-term deferred revenue and customer advances		36,146		37,282
Long-term other accrued liabilities		16,632		19,998
Deferred tax liabilities		96		183
Long-term operating lease liabilities		61,883		65,092
Long-term incomes taxes payable		24,596		44,331
Long-term liabilities held for sale		0		2,000
Total liabilities		900,894		960,927
Commitments and contingencies (Note R)
SHAREHOLDERS' EQUITY
Common stock, $0.125 par value, 1,000,000 shares authorized; 161,802 and 152,698 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively		20,225		19,087
Additional paid-in capital		1,865,351		1,827,274
Accumulated other comprehensive loss		(44,104)		(26,978)
Retained earnings		889,340		706,514
Total shareholders' equity		2,730,812		2,525,897
Total liabilities and shareholders' equity		$ 3,631,706		$ 3,486,824

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

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

[3] Total assets are attributable to each segment. Corporate assets consist of cash and cash equivalents, marketable securities, and certain other assets.