Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Income Taxes
Consolidated effective tax rates (as a percent)	32.50%	23.30%	38.90%	28.50%
Reversal of deferred tax assets			$ 2,350