Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net revenue	$ 150.6	$ 178.6	$ 306.0	$ 357.5
Cost of goods sold	121.6	144.7	243.0	289.9
Gross profit	29.0	33.9	63.0	67.6
Operating expenses:
Selling, general and administrative	38.6	44.3	79.6	87.7
Research and development	4.8	4.5	9.6	8.8
Restructuring and other	1.5	5.2	2.7	7.3
Total	44.9	54.0	91.9	103.8
Operating loss from continuing operations	(15.9)	(20.1)	(28.9)	(36.2)
Other (income) expense:
Interest income	(0.1)	(0.1)	(0.2)	(0.2)
Interest expense	0.6	0.6	1.2	1.2
Other, net expense	0.8	0.8	1.6	1.0
Total	1.3	1.3	2.6	2.0
Loss from continuing operations before income taxes	(17.2)	(21.4)	(31.5)	(38.2)
Income tax provision (benefit)	0.2	(1.6)	0.3	(1.6)
Loss from continuing operations	(17.4)	(19.8)	(31.8)	(36.6)
Discontinued operations:
Loss on sale of discontinued businesses, net of income taxes	0.0	(1.2)	0.0	(1.7)
Loss from operations of discontinued businesses, net of income taxes	0.0	(0.4)	0.0	(0.6)
Loss from discontinued operations, net of income taxes	0.0	(1.6)	0.0	(2.3)
Net loss	$ (17.4)	$ (21.4)	$ (31.8)	$ (38.9)
Loss per common share — basic:
Continuing operations - basic (in dollars per share)	$ (0.42)	$ (0.48)	$ (0.77)	$ (0.89)
Discontinued operations - basic (in dollars per share)	0.00	(0.04)	0.00	(0.06)
Net loss - basic (in dollars per share)	(0.42)	(0.52)	(0.77)	(0.95)
Loss per common share — diluted:
Continuing operations - diluted (in dollars per share)	(0.42)	(0.48)	(0.77)	(0.89)
Discontinued operations - diluted (in dollars per share)	0.00	(0.04)	0.00	(0.06)
Net loss - diluted (dollars per share)	$ (0.42)	$ (0.52)	$ (0.77)	$ (0.95)
Weighted average shares outstanding - basic (in shares)	41.1	41.2	41.1	41.0
Weighted average shares outstanding - diluted (in shares)	41.1	41.2	41.1	41.0