Condensed Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Revenue:
Product and maintenance	$ 411,744	$ 383,637
Services	36,118	27,729
Total revenue	447,862	411,366
Costs and Expenses:
Cost of product and maintenance	44,181	42,059
Cost of services	17,873	18,526
Marketing and sales	99,200	100,268
Research and development	179,906	162,996
General and administrative	28,300	27,642
Amortization of acquired intangibles	5,780	6,231
Restructuring and other charges	14,586	4,359
Total costs and expenses	389,826	362,081
Income from operations	58,036	49,285
Interest expense	(5,357)	(11,754)
Other income, net	4,763	4,781
Income before provision for income taxes	57,442	42,312
Provision for income taxes	6,880	6,053
Net income	$ 50,562	$ 36,259
Net income per share - basic (in usd per share)	$ 0.17	$ 0.13
Net income per share - diluted (in usd per share)	$ 0.17	$ 0.12
Weighted average common shares outstanding - basic (in shares)	296,615	284,523
Weighted average common shares outstanding - diluted (in shares)	303,434	311,847