Equity Accumulated Other Comprehensive (Loss) Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Balance, beginning of year	$ (10,337)	$ 5,981
Other Comprehensive Income (Loss), Net of Tax	(7,340)	(5,131)
Balance, end of the period	(17,677)	850
Foreign Currency Translation
Balance, beginning of year	(9,803)	7,197
Other Comprehensive Income (Loss), Net of Tax	(7,220)	(5,069)
Balance, end of the period	(17,023)	2,128
Cash Flow Hedges
Balance, beginning of year	744	0
Other Comprehensive Income (Loss), Net of Tax	(458)	0
Balance, end of the period	286	0
Pension
Balance, beginning of year	(1,278)	(1,216)
Other Comprehensive Income (Loss), Net of Tax	338	(62)
Balance, end of the period	$ (940)	$ (1,278)