Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Total revenue	$ 327.0	$ 355.7
Cost of sales	226.9	247.7
Gross margin	$ 100.1	$ 108.0
Gross margin %	30.60%	30.40%
Operating expenses:
Research and development	$ 40.1	$ 41.7
Selling, general and administrative	48.6	52.7
Amortization of acquisition-related intangibles	1.9	2.1
Restructuring, impairments, and other costs	(10.9)	4.7
Goodwill impairment charge		0.6
Total operating expenses	79.7	101.8
Operating income	20.4	6.2
Other expense, net	1.6	1.2
Income before income taxes	18.8	5.0
Provision for income taxes	4.0	3.9
Net income	$ 14.8	$ 1.1
Net income per common share:
Basic	$ 0.13	$ 0.01
Diluted	$ 0.13	$ 0.01
Weighted average common shares:
Basic	113.8	117.3
Diluted	116.5	120.0