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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 30, 2024
Apr. 01, 2023
Cash flows from operating activities:    
Net income $ 102,196 $ 140,923
Adjustments to reconcile net income to net cash provided by operating activities:    
Stock-based compensation 10,913 12,805
Deferred income taxes 4,453 (5,078)
Depreciation 22,129 19,411
Amortization of intangibles 26,385 11,743
Change in operating assets and liabilities:    
Decrease in accounts receivable 62,592 44,047
Increase in inventories (28,309) (42,621)
Increase in other current assets (4,707) (2,123)
Decrease in other assets 7,369 6,662
Decrease in accounts payable and other current liabilities (18,418) (71,257)
Increase in deferred revenue and customer advances 85,901 77,206
(Decrease) increase in other liabilities (7,634) 5,033
Net cash provided by operating activities 262,870 196,751
Cash flows from investing activities:    
Additions to property, plant, equipment and software capitalization (28,655) (34,390)
Investments in unaffiliated companies (1,064) 0
Purchases of investments (923) (893)
Maturities and sales of investments 898 877
Net cash used in investing activities (29,744) (34,406)
Cash flows from financing activities:    
Proceeds from debt issuances 0 50,040
Payments on debt (300,000) (145,000)
Proceeds from stock plans 13,932 2,378
Purchases of treasury shares (13,089) (69,505)
Proceeds from derivative contracts 6,981 2,876
Net cash used in financing activities (292,176) (159,211)
Effect of exchange rate changes on cash and cash equivalents 1,264 2,407
(Decrease) increase in cash and cash equivalents (57,786) 5,541
Cash and cash equivalents at beginning of period 395,076 480,529
Cash and cash equivalents at end of period $ 337,290 $ 486,070