Basis of Presentation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 29, 2012	Jun. 29, 2012
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Reduction to revenue due to prior period adjustments	$ 3.2
Impact of prior period adjustment on net loss	$ 3.2	$ 2.9
Impact of prior period adjustment on earnings, per share	$ 0.01	$ 0.01