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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Apr. 01, 2023
Apr. 02, 2022
Cash flows from operating activities:    
Net income $ 140,923 $ 159,831
Adjustments to reconcile net income to net cash provided by operating activities:    
Stock-based compensation 12,805 10,933
Deferred income taxes (5,078) 4,175
Depreciation 19,411 17,209
Amortization of intangibles 11,743 15,455
Acquired in-process research and development and other non-cash items 0 9,381
Change in operating assets and liabilities:    
Decrease (increase) in accounts receivable 44,047 (907)
Increase in inventories (42,621) (26,832)
Increase in other current assets (2,123) (1,805)
Decrease (increase) in other assets 6,662 (13,491)
Decrease in accounts payable and other current liabilities (71,257) (69,548)
Increase in deferred revenue and customer advances 77,206 91,514
Increase in other liabilities 5,033 2,045
Net cash provided by operating activities 196,751 197,960
Cash flows from investing activities:    
Additions to property, plant, equipment and software capitalization (34,390) (27,751)
Proceeds from equity investments, net 0 6,785
Payments for intellectual property licenses 0 (4,897)
Purchases of investments (893) (9,219)
Maturities and sales of investments 877 54,074
Net cash (used in) provided by investing activities (34,406) 18,992
Cash flows from financing activities:    
Proceeds from debt issuances 50,040 0
Payments on debt (145,000) (70,000)
Proceeds from stock plans 2,378 12,832
Purchases of treasury shares (69,505) (170,136)
Proceeds from (payments for) derivative contracts 2,876 (107)
Net cash used in financing activities (159,211) (227,411)
Effect of exchange rate changes on cash and cash equivalents 2,407 (10,705)
Increase (decrease) in cash and cash equivalents 5,541 (21,164)
Cash and cash equivalents at beginning of period 480,529 501,234
Cash and cash equivalents at end of period $ 486,070 $ 480,070