Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 02, 2015	Jan. 03, 2014	Dec. 28, 2012
Cash flows from operating activities:
Net income	$ 213,888	$ 218,166	$ 189,716
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	33,129	26,736	23,691
Amortization expense	158,512	162,841	125,707
Provision for doubtful accounts	3,747	1,909	2,030
Deferred income taxes	(1,650)	(14,963)	(1,369)
Stock-based compensation	43,398	36,442	32,660
Income from equity method investments	(12,368)	(20,680)	(24,727)
Gain on an equity sale	(15,091)	0	0
Acquisition / divestiture (gain)/loss	2,899	1,430	(7,257)
Excess tax benefit for stock-based compensation	(14,098)	(13,540)	(25,345)
Provision for excess and obsolete inventories	4,817	3,157	6,234
Other non-cash items	4,653	(657)	(4,221)
Add decrease (increase) in assets:
Accounts receivable	(10,882)	(4,070)	(24,388)
Other receivables	(2,321)	2,302	(5,017)
Inventories	(31,778)	(11,351)	(8,402)
Other current and non-current assets	(7,101)	(11,811)	(7,945)
Add increase (decrease) in liabilities:
Accounts payable	(7,185)	(15,834)	25,985
Accrued compensation and benefits	527	4,047	7,889
Deferred revenue	45,865	29,394	16,560
Accrued warranty expense	3,045	675	(1,520)
Accrued liabilities	(4,923)	20,442	20,419
Net cash provided by operating activities	407,083	414,635	340,700
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(307,945)	(258,797)	(728,114)
Acquisitions of property and equipment	(47,312)	(70,877)	(54,071)
Acquisitions of intangible assets	(7,633)	(242)	(1,170)
(Purchases) sales of equity method investments	(10,939)		0
Sales of equity method investments		2,430
Dividends received from equity method investments	32,231	7,672	13,178
Other	(2,448)	(4,950)	5,891
Net cash used in investing activities	(344,046)	(324,764)	(764,286)
Cash flows from financing activities:
Issuance of common stock, net of tax withholdings	56,094	47,707	59,187
Repurchase and retirement of common stock	(97,757)	0	0
Excess tax benefit for stock-based compensation	14,099	13,540	25,345
Proceeds from debt and revolving credit lines	876,166	407,678	1,199,352
Payments on debt and revolving credit lines	(900,126)	(567,344)	(857,477)
Net cash provided by (used in) financing activities	(51,524)	(98,419)	426,407
Effect of exchange rate changes on cash and cash equivalents	(10,740)	(1,996)	329
Net increase (decrease) in cash and cash equivalents	773	(10,544)	3,150
Cash and cash equivalents, beginning of fiscal year	147,227	157,771	154,621
Cash and cash equivalents, end of fiscal year	$ 148,000	$ 147,227	$ 157,771