Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Revenue:
Product and maintenance	$ 1,683,771	$ 1,578,944	$ 1,479,151
Services	132,312	123,147	101,781
Total revenue	1,816,083	1,702,091	1,580,932
Costs and expenses:
Cost of product and maintenance	183,291	155,659	156,333
Cost of service	73,201	82,794	67,373
Marketing and sales	395,194	402,432	399,688
Research and development	735,340	637,567	603,006
General and administrative	125,106	109,982	113,619
Amortization of acquired intangibles	18,095	23,716	24,017
Restructuring and other charges	40,955	4,511	10,252
Total costs and expenses	1,571,182	1,416,661	1,374,288
Income from operations	244,901	285,430	206,644
Interest expense	(23,670)	(28,311)	(34,121)
Other income, net	15,922	10,477	8,479
Income before provision for income taxes	237,153	267,596	181,002
Provision for income taxes	34,067	15,179	22,104
Net income	$ 203,086	$ 252,417	$ 158,898
Net income per share - basic (in usd per share)	$ 0.71	$ 0.88	$ 0.56
Net income per share - diluted (in usd per share)	$ 0.70	$ 0.81	$ 0.52
Weighted average common shares outstanding - basic (shares)	284,502	288,018	283,349
Weighted average common shares outstanding - diluted (shares)	291,256	312,302	306,775