Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
Operating activities:
Net income	$ 38,603	$ 47,466
Income from discontinued operations and dispositions, net of income taxes	(2,541)	(5,722)
Income from continuing operations	36,062	41,744
Adjustments to reconcile net income from continuing operations to net cash provided by continuing operations:
Restructuring and contract termination charges, net	9,651	0
Depreciation and amortization	24,747	25,395
Stock-based compensation	4,926	3,846
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	811	1,322
Amortization of deferred debt financing costs and accretion of discount	585	356
Amortization of acquired inventory revaluation	2,176	131
Changes in operating assets and liabilities which provided (used) cash, excluding effects from companies purchased and divested:
Accounts receivable, net	25,093	16,747
Inventories	(6,837)	(16,959)
Accounts payable	(13,883)	1,613
Accrued expenses and other	(42,129)	(47,908)
Net cash provided by operating activities of continuing operations	41,202	26,287
Net cash provided by operating activities of discontinued operations	12,534	5,753
Net cash provided by operating activities	53,736	32,040
Investing activities:
Capital expenditures	(5,981)	(7,659)
Proceeds from Divestiture of Businesses	0	1,000
Changes in restricted cash balances	(15,153)	0
Activity related to acquisitions, net of cash and cash equivalents acquired	(123,578)	(10,484)
Net cash used in investing activities of continuing operations	(114,406)	(17,143)
Net cash used in investing activities of discontinued operations	(280)	(149)
Net cash used in investing activities	(114,686)	(17,292)
Financing activities:
Payments on borrowings	(145,950)	(75,000)
Proceeds from borrowings	146,952	183,000
Settlement of cash flow hedges	(1,569)	2,630
Net payments on other credit facilities	(287)	(275)
Payments for acquisition-related contingent consideration	(8,940)	(93)
Proceeds from issuance of common stock under stock plans	4,627	1,238
Purchases of common stock	(3,127)	(151,159)
Dividends paid	(7,673)	(7,843)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(15,967)	(47,502)
Cash Provided by (Used in) Financing Activities, Discontinued Operations	(214)	(193)
Net cash used in financing activities	(16,181)	(47,695)
Effect of exchange rate changes on cash and cash equivalents	6,195	5,746
Net increase in cash and cash equivalents	(70,936)	(27,201)
Cash and cash equivalents at beginning of period	359,265	237,932
Cash and cash equivalents at end of period	$ 288,329	$ 210,731