Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 27, 2014	Mar. 28, 2013	Dec. 26, 2013
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 1.0	$ 0.5
Effective tax rates (as a percent)	38.50%	41.70%
Valuation allowance against deferred tax assets	$ 2.4		$ 2.4