Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 28, 2013	Jun. 28, 2013	Jun. 28, 2013 CANADA	Jun. 28, 2013 CANADA	Sep. 28, 2013 Internal Revenue Service (IRS) Scenario, Forecast Minimum	Sep. 28, 2013 Internal Revenue Service (IRS) Scenario, Forecast Maximum
Income Taxes [Line Items]
Statutory tax rate			26.00%	26.00%
Effective tax rate on income from operations	74.50%	53.00%
Expected income tax refund					$ 11.5	$ 13.5