Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues	$ 116.2	$ 72.8
Cost of sales	41.1	26.3
Gross profit	75.1	46.5
Operating expenses
Research and development	32.2	19.8
Selling, general and administrative	62.1	39.4
Total operating expenses	94.3	59.2
Operating loss	(19.2)	(12.7)
Interest Income, Other	0.1	0.0
Interest expense	(0.1)	(0.2)
Net loss	$ (19.2)	$ (12.9)
Basic and diluted net loss per share	$ (0.23)	$ (0.17)
Shares used to compute basic and diluted net loss per share	82.1	77.8