Earnings Per Share - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Sep. 24, 2011	Sep. 29, 2012	Sep. 24, 2011
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Basic EPS for common shares	$ (0.25)	$ 0.29	$ (0.33)	$ 0.17
Basic EPS for redeemable preferred shares		$ 0.29
Diluted Earnings Per Share		$ 0.28
Options and non-vested shares excluded from computation of diluted earnings per share	17.5	16.0	15.6	12.4
Redeemable Preferred Stock | Distributed
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Basic EPS for redeemable preferred shares		$ 0.13
Redeemable Preferred Stock | Undistributed
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Basic EPS for redeemable preferred shares		$ 0.16