Long-Term Debt, Commitments and Contingencies (Details) (USD $)	6 Months Ended				0 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014 Uncommitted bank lines	Jun. 28, 2014 Credit Agreement	Aug. 29, 2014 Subsequent event Credit Agreement Anticipated
Debt Instrument
Amount reclassified from long-term debt to current maturities of long-term debt				$ 74,100,000
Principal payments of long-term debt	5,903,000	29,767,000			85,500,000
Fee for early payment					3,760,000
Letters of credit outstanding			$ 3,653,000