Net Income (Loss) Per Common Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011
Earnings Per Share [Abstract]
Loss from continuing operations available for common stockholders (A)	$ (4.4)	$ (7.2)	$ (21.8)	$ (16.3)
Weighted average outstanding shares of common stock (B)	56.6	30.8	43.8	25.3
Dilutive effect of employee stock options and awards	0	0	0	0
Common stock and common stock equivalents (C)	56.6	30.8	43.8	25.3
Basic (A/B)	$ (0.08)	$ (0.23)	$ (0.50)	$ (0.64)
Diluted (A/C)	$ (0.08)	$ (0.23)	$ (0.50)	$ (0.64)
Shares from stock options and awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares from stock options and awards	4.3	2.8	3.3	2.0