Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 27, 2014		Jun. 28, 2013		Jun. 27, 2014		Jun. 28, 2013
Net earnings	$ 16,573		$ 17,892		$ 28,030		$ 25,046
Foreign currency translation adjustments	1,755		(244)		1,460		(4,758)
Unrealized gain on derivative instruments, net of tax expense (benefit) of $(38) and $105, and $41 and $38, respectively	0	[1]	172	[1]	69	[1]	61	[1]
Change in pension and post-retirement benefit plan liabilities, net of tax expense of $408 and $904, and $810 and $1,810, respectively	673	[2]	1,476	[2]	1,337	[2]	2,951	[2]
Other Comprehensive Income (Loss)	2,428		1,404		2,866		(1,746)
Comprehensive Income	$ 19,001		$ 19,296		$ 30,896		$ 23,300

[1] See Note 7, Derivative Financial Instruments, for additional information regarding our derivative instruments.

[2] These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 10, Pension Plans for additional information.)