Consolidated Income Statements (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Revenue:
Product and maintenance	$ 1,479,151	$ 1,357,934	$ 1,212,429
Services	101,781	102,182	113,995
Total revenue	1,580,932	1,460,116	1,326,424
Costs and expenses:
Cost of product and maintenance	156,333	132,245	118,516
Cost of service	67,373	67,956	72,607
Marketing and sales	399,688	378,157	342,278
Research and development	603,006	534,022	454,085
General and administrative	113,619	121,314	112,076
Amortization of acquired intangibles	24,017	19,416	15,077
Restructuring and other charges	10,252	17,999	113
Total costs and expenses	1,374,288	1,271,109	1,114,752
Income from operations	206,644	189,007	211,672
Interest expense	(34,121)	(37,581)	(34,742)
Other income, net	8,479	7,570	11,341
Income before provision (benefit) for income taxes	181,002	158,996	188,271
Provision (benefit) for income taxes	22,104	(5,247)	(251,677)
Net income	$ 158,898	$ 164,243	$ 439,948
Net income per share - basic (in usd per share)	$ 0.56	$ 0.59	$ 1.63
Net income per share - diluted (in usd per share)	$ 0.52	$ 0.56	$ 1.57
Weighted average common shares outstanding - basic (shares)	283,349	277,796	270,479
Weighted average common shares outstanding - diluted (shares)	306,775	294,564	280,667