CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 01, 2022	Sep. 25, 2021
Cash flows from operating activities:
Net income	$ 157,120	$ 95,612
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Amortization of intangibles	41,461	37,674
Depreciation	6,980	11,044
Share-based compensation	18,929	15,107
Write-off of acquired in-process research and development	4,406
Acquired inventory step-up amortization		253
Provision for inventory valuation	7,175	6,262
Deferred income taxes	(24,560)
Other, net	2,742	893
Changes in operating assets and liabilities, net of effects of business acquired	(127,045)	(40,565)
Net cash and cash equivalents provided by operating activities	87,208	126,280
Cash flows from investing activities:
Purchases of marketable securities	(289,504)	(250,486)
Proceeds from maturities and sales of marketable securities	274,636	177,529
Acquisitions, net of cash acquired	(4,572)	(26,795)
Purchases of property, plant and equipment	(9,786)	(11,176)
Net cash and cash equivalents used in investing activities	(29,226)	(110,928)
Cash flows from financing activities:
Purchases and retirement of common stock	(11,540)
Tax payments related to shares withheld for share-based compensation plans	(8,569)	(6,780)
Payment of contingent consideration for acquired business	(2,287)
Issuance of shares through share-based compensation plans	4,499	6,409
Net cash and cash equivalents used in financing activities	(17,897)	(371)
Effect of exchange rate changes on cash and cash equivalents	(9,304)	506
Net increase in cash and cash equivalents	30,781	15,487
Cash and cash equivalents at beginning of period	169,602	136,720
Cash and cash equivalents at end of period	200,383	152,207
Supplemental disclosure of cash flow information:
Income taxes paid (net of refunds)	$ 47,107	$ 16,524