CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Jan. 01, 2022	Dec. 26, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 223,334	$ 142,350		$ 31,025
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation	9,378	14,435		13,832
Amortization of intangibles	55,284	51,366	$ 51,366	53,746
Share-based compensation	24,426	19,542		17,662
Research and Development Asset Acquired Other than Through Business Combination, Written-off	5,652	0		0
Acquired inventory step-up amortization	0	393		10,678
Provision for inventory valuation	9,313	8,175		14,703
Deferred income taxes	(33,601)	(12,618)		(11,631)
Other, net	(563)	2,267		4,711
Change in operating assets and liabilities net of assets acquired and liabilities assumed in merger and acquisition:
Accounts receivable	(65,140)	(27,829)		(25,816)
Income taxes	(5,006)	1,307		1,196
Inventories	(93,905)	(57,175)		(42,409)
Prepaid expenses and other assets	(4,954)	(768)		11,409
Accounts payable	1,181	12,142		(11,403)
Accrued and other liabilities	11,304	21,694		(17,867)
Net cash and cash equivalents provided by operating activities	136,703	175,281		105,984
Cash flows from investing activities:
Purchases of marketable securities	(371,287)	(361,022)		(313,027)
Proceeds from maturities and sales of marketable securities	338,645	255,063		265,409
Purchases of property, plant and equipment	(18,405)	(12,039)		(3,829)
Purchase of business, net of cash acquired	(4,644)	(23,795)		0
Cash received from convertible note receivable	0		0	2,848
Net cash and cash equivalents provided by (used in) investing activities	(55,691)	(141,793)		48,599
Cash flows from financing activities:
Purchases of common stock	(65,257)		0	(52,000)
Tax payments related to shares withheld for share-based compensation plans	(8,874)	(7,403)		(4,052)
Payment of contingent consideration for acquired business	(2,287)	0		(569)
Issuance of shares through share-based compensation plans	8,068	10,073		2,919
Net cash and cash equivalents provided by (used in) financing activities	(68,350)	2,670		(53,702)
Effect of exchange rate changes on cash and cash equivalents	(6,391)	(3,276)		2,364
Net increase in cash and cash equivalents	6,270	32,882		6,047
Cash and cash equivalents at beginning of year	169,602	136,720		130,673
Cash and cash equivalents at end of year	175,872	169,602	$ 169,602	$ 136,720	$ 130,673
Supplemental disclosure of cash flow information:
Income taxes paid (received), net	$ 58,687	$ 23,766			$ (6,415)