CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 27, 2020 USD ($)	Jun. 26, 2021 USD ($)	Jun. 27, 2020 USD ($)
OPERATING ACTIVITIES
Net income (loss)	$ (8,991)	$ 139,808	$ 15,653
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,900	27,251	27,728
Amortization of intangibles	9,827	21,162	19,808
Deferred revenue		(316)	(289)
Non-cash inventory charges		6,807	0
Impairment charges	33,841	0	36,078
Stock-based compensation		12,238	10,852
(Gain) loss on investments and other assets		(8,865)	542
Deferred income taxes		(2,172)	2,512
Other		7,842	(1,222)
Changes in operating assets and liabilities:
Trade receivables		(69,881)	13,914
Inventories		(38,205)	(10,761)
Accounts payable		38,955	3,439
Accrued liabilities and income taxes		4,488	(19,144)
Prepaid expenses and other assets		(12,766)	2,176
Net cash provided by operating activities		126,346	101,286
INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired		(109,852)	0
Purchases of property, plant, and equipment		(32,657)	(29,479)
Net proceeds from sale of property, plant and equipment, and other		2,569	89
Net cash used in investing activities		(139,940)	(29,390)
FINANCING ACTIVITIES
Proceeds of revolving credit facility		0	240,000
Payments of revolving credit facility		(30,000)	0
Payments of term loan		0	(145,000)
Net proceeds related to stock-based award activities		4,413	3,642
Purchases of common stock		0	(22,927)
Debt issuance costs		0	(1,786)
Cash dividends paid		(23,596)	(23,403)
Net cash (used in) provided by financing activities		(49,183)	50,526
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(2,894)	(1,694)
(Decrease) increase in cash, cash equivalents, and restricted cash		(65,671)	120,728
Cash, cash equivalents, and restricted cash at beginning of period		687,525	531,139
Cash, cash equivalents, and restricted cash at end of period	651,867	621,854	651,867
Supplementary Cash Flow Information
Cash and cash equivalents	651,867	616,330	651,867
Restricted cash included in prepaid expenses and other current assets	0	3,790	0
Restricted cash included in other assets	0	1,734	0
Cash paid during the period for interest	$ 3,400	8,719	10,799
Capital expenditures, not yet paid		$ 6,826	$ 4,665