CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
Mar. 27, 2021	Mar. 28, 2020
OPERATING ACTIVITIES
Net income	$ 57,713	$ 24,644
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,677	13,821
Amortization of intangibles	10,521	9,981
Deferred revenue	(157)	(145)
Non-cash inventory charges	3,489	0
Impairment charges	0	2,237
Stock-based compensation	3,395	2,965
(Gain) loss on investments and other assets	(7,675)	2,604
Deferred income taxes	378	616
Other	8,537	3,547
Changes in operating assets and liabilities:
Trade receivables	(32,973)	(9,457)
Inventories	(6,152)	6,667
Accounts payable	17,070	(3,964)
Accrued liabilities and income taxes	(15,427)	(7,012)
Prepaid expenses and other assets	(2,230)	(1,225)
Net cash provided by operating activities	50,166	45,279
INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired	(109,852)	0
Purchases of property, plant, and equipment	(14,721)	(16,586)
Net proceeds from sale of property, plant and equipment	2,553	50
Net cash used in investing activities	(122,020)	(16,536)
FINANCING ACTIVITIES
Proceeds of revolving credit facility	0	100,000
Payments of revolving credit facility	(30,000)	0
Payments of term loan	0	(2,500)
Net proceeds related to stock-based award activities	7,509	2,956
Purchases of common stock	0	(22,927)
Cash dividends paid	(11,782)	(11,725)
Net cash (used in) provided by financing activities	(34,273)	65,804
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(4,101)	(5,111)
(Decrease) increase in cash, cash equivalents, and restricted cash	(110,228)	89,436
Cash, cash equivalents, and restricted cash at beginning of period	687,525	531,139
Cash, cash equivalents, and restricted cash at end of period	577,297	620,575
Supplementary Cash Flow Information
Cash and cash equivalents	572,771	620,575
Restricted cash included in prepaid expenses and other current assets	3,462	0
Restricted cash included in other assets	1,064	0
Cash paid during the period for interest	6,235	7,354
Capital expenditures, not yet paid	$ 4,141	$ 5,832

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Amount of unrealized gain (loss) on investment.

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