Condensed Consolidated Cash Flow Statements (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017
Cash flows from operating activities:
Net income	$ 117,220	$ 62,417
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	111,896	112,538
Share-based compensation	14,657	13,431
Loss on debt extinguishment	22,990	52,441
Changes in operating assets and liabilities, net of the effects of currency exchange rate changes and acquired businesses:
Receivables	(25,338)	(32,950)
Inventories	(16,642)	(50,232)
Accounts payable	(81,296)	30,290
Accrued liabilities	(29,474)	(54,828)
Income taxes	4,463	(32,071)
Other assets	(13,267)	(9,046)
Other liabilities	(4,350)	11,625
Net cash provided by operating activities	100,859	103,615
Cash flows from investing activities:
Cash used to acquire businesses, net of cash acquired	(84,580)	(166,896)
Capital expenditures	(63,451)	(33,430)
Proceeds from disposal of tangible assets	1,556	15
Proceeds from disposal of business	40,171	0
Net cash used for investing activities	(106,304)	(200,311)
Cash flows from financing activities:
Payments under borrowing arrangements	(484,757)	(1,105,892)
Payments under share repurchase program	(125,000)	(11,508)
Cash dividends paid	(32,421)	(32,535)
Debt issuance costs paid	(7,609)	(16,586)
Withholding tax payments for share-based payment awards	(2,004)	(5,421)
Redemption of stockholders' rights agreement	(411)	0
Borrowings under credit arrangements	431,270	866,700
Net cash used for financing activities	(220,932)	(305,242)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(5,704)	15,185
Decrease in cash and cash equivalents	(232,081)	(386,753)
Cash and cash equivalents, beginning of period	561,108	848,116
Cash and cash equivalents, end of period	$ 329,027	$ 461,363