Condensed Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013
Tax expense (benefit) for the change in unrealized gain (loss) on derivative instruments	$ (38)	$ 105	$ 41	$ 38
Tax expense for pension plan adjustments	$ 408	$ 904	$ 810	$ 1,810