Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012	Dec. 30, 2011
Cash flows from operating activities:
Net income	$ 218,166	$ 189,716	$ 148,909
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	26,736	23,691	20,509
Amortization expense	162,841	125,707	85,902
Provision for doubtful accounts	1,909	2,030	1,913
Deferred income taxes	(14,963)	(1,369)	(26,305)
Stock-based compensation	36,442	32,660	28,451
Income from equity method investments	(20,680)	(24,727)	(15,349)
Acquisition / divestiture (gain)/loss	1,430	(7,257)	(264)
Excess tax benefit for stock-based compensation	(13,540)	(25,345)	(14,762)
Provision for excess and obsolete inventories	3,157	6,234	8,410
Other non-cash items	(657)	(4,221)	2,407
Add decrease (increase) in assets:
Accounts receivable	(4,070)	(24,388)	(31,874)
Other receivables	2,302	(5,017)	30,141
Inventories	(11,351)	(8,402)	(30,139)
Other current and non-current assets	(11,811)	(7,945)	10,519
Add increase (decrease) in liabilities:
Accounts payable	(15,834)	25,985	(4,310)
Accrued compensation and benefits	4,047	7,889	2,469
Deferred revenue	29,394	16,560	18,775
Accrued warranty expense	675	(1,520)	644
Accrued liabilities	20,442	20,419	5,583
Net cash provided by operating activities	414,635	340,700	241,629
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(258,797)	(728,114)	(759,737)
Acquisitions of property and equipment	(70,877)	(54,071)	(23,278)
Dividends received from equity method investments	7,672	13,178	12,398
Other	(2,762)	4,721	(2,948)
Net cash used in investing activities	(324,764)	(764,286)	(773,565)
Cash flows from financing activities:
Issuance of common stock, net of tax withholdings	47,707	59,187	45,869
Excess tax benefit for stock-based compensation	13,540	25,345	14,762
Proceeds from debt and revolving credit lines	407,678	1,199,352	734,225
Payments on debt and revolving credit lines	(567,344)	(857,477)	(330,689)
Net cash provided by (used in) financing activities	(98,419)	426,407	464,167
Effect of exchange rate changes on cash and cash equivalents	(1,996)	329	1,602
Net increase (decrease) in cash and cash equivalents	(10,544)	3,150	(66,167)
Cash and cash equivalents, beginning of fiscal year	157,771	154,621	220,788
Cash and cash equivalents, end of fiscal year	$ 147,227	$ 157,771	$ 154,621