CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Cash flows from operating activities of continuing operations:
Net income	$ 40,897	$ 56,184
Adjustments to reconcile net income to net cash provided by operating activities:
(Income) loss from discontinued operations	1,021	(1,253)
Depreciation expense	15,645	14,832
Amortization expense of intangible assets	37,751	37,816
Amortization expense of deferred financing costs and debt discount	1,179	1,178
Gain on sale of assets	(2,739)	0
Changes in contingent consideration	13,057	9,592
Asset impairment	3,030	0
Stock-based compensation	5,781	4,787
Deferred income taxes, net	2,603	(1,472)
Payments for contingent consideration	(25,935)	0
Other	654	(1,272)
Changes in assets and liabilities, net of effects of acquisitions and disposals:
Accounts receivable	(14,102)	(3,402)
Inventories	(19,200)	32
Prepaid expenses and other assets	(11,524)	(3,406)
Accounts payable, accrued expenses and other liabilities	8,856	(27,185)
Income taxes receivable and payable, net	3,192	417
Net cash provided by operating activities from continuing operations	60,166	86,848
Cash flows from investing activities of continuing operations:
Expenditures for property, plant and equipment	(23,494)	(15,747)
Proceeds from sale of assets	991	0
Payments for businesses and intangibles acquired, net of cash acquired	(1,025)	(3,684)
Net cash used in investing activities from continuing operations	(23,528)	(19,431)
Cash flows from financing activities of continuing operations:
Reduction in borrowings	0	(18,500)
Debt extinguishment, issuance and amendment fees	0	(74)
Net proceeds from share based compensation plans and the related tax impacts	2,242	1,400
Payments for contingent consideration	(110,953)	(91)
Dividends paid	(15,650)	(15,447)
Net cash provided by (used in) financing activities from continuing operations	(124,361)	(32,712)
Cash flows from discontinued operations:
Net cash used in operating activities	3,610	(206)
Net cash used in discontinued operations	3,610	(206)
Effect of exchange rate changes on cash and cash equivalents	(1,836)	10,815
Net (decrease) increase in cash and cash equivalents	(85,949)	45,314
Cash and cash equivalents at the beginning of the period	357,161	333,558
Cash and cash equivalents at the end of the period	271,212	378,872
Non cash financing activities of continuing operations:
Acquisition of treasury stock associated with settlement and exchange of convertible note hedge and warrant agreements	$ 0	$ 17,872