Other Comprehensive Income Components of Other Comprehensive Income (Details) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Dec. 28, 2013
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax			$ 7,500,000
Net earnings	33,445,000	25,902,000
Currency Translation Adjustment	1,574,000	(4,684,000)
Pension liability adjustment, net of tax	57,000	166,000
Unrealized gain on interest rate swaps, net of tax	264,000	(306,000)
Comprehensive income	$ 35,226,000	$ 21,078,000