Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020
Operating activities
Net income before attribution to noncontrolling interests	$ 68,873	$ 30,944
Adjustments to reconcile net income to net cash provided by operating activities:
(Credit) provision for allowance for credit losses on accounts and notes receivable	(1,200)	1,051
Depreciation and amortization	25,353	24,672
Deferred income taxes	(1,397)	(1,502)
Stock-based compensation expense	8,202	8,742
Other	467	1,090
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	13,299	(8,571)
Income tax receivable	189	4,278
Inventories	430	(5,017)
Prepaid expenses and other current assets	1,092	9,657
Other assets and liabilities	(11,380)	8,065
Accounts payable	(5,874)	1,558
Income and other taxes payable	18,500	3,601
Accrued expenses and other current liabilities	12,123	10,269
Deferred revenue	(647)	(1,179)
Net cash provided by operating activities	128,030	87,658
Investing activities
Purchases of property and equipment	(21,543)	(13,795)
Notes issued	(5,263)	(9,596)
Repayments of notes issued	7,922	6,462
Acquisitions, net of cash acquired	(699)
Other	116	14
Net cash used in investing activities	(19,467)	(16,915)
Financing activities
Repayments of term loan	(10,000)	(10,000)
Net proceeds (repayments) of revolving credit facilities	85,000	(9,884)
Proceeds from exercise of stock options	8,100	21,704
Dividends paid to common stockholders	(14,844)	(14,520)
Dividends paid to preferred stockholders	(6,394)	(6,825)
Tax payments for equity award issuances	(3,887)	(1,579)
Repurchase of Series B Convertible Preferred Stock	(188,647)
Acquisition of Company common stock	(8,188)
Distributions to noncontrolling interests	(2,320)	(945)
Other	(1,691)	(704)
Net cash used in financing activities	(142,871)	(22,753)
Effect of exchange rate changes on cash and cash equivalents	317	(202)
Change in cash and cash equivalents	(33,991)	47,788
Cash and cash equivalents at beginning of period	130,204	27,911
Cash and cash equivalents at end of period	$ 96,213	$ 75,699