Other Comprehensive Income Changes in accumulated other comprehensive income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Accumulated Other Comprehensive Income/(Loss) [Line Items]
Currency Translation Adjustment	$ 1,574	$ (4,684)
Accumulated Other Comprehensive Income [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(8,635)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	1,760
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(57)	(166)
Reclassification from accumulated other comprehensive income, current period, net of tax	21
Other Comprehensive Income (Loss), before Reclassifications, before Tax	1,781
Accumulated Other Comprehensive Income (Loss), Net of Tax	(6,854)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income/(Loss) [Line Items]
Currency Translation Adjustment	1,574
Accumulated Other Comprehensive Income [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(5,885)
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Other Comprehensive Income (Loss), before Reclassifications, before Tax	1,574
Accumulated Other Comprehensive Income (Loss), Net of Tax	(4,311)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,120)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	57
Reclassification from accumulated other comprehensive income, current period, net of tax	0
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(57)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,177)
Interest Rate Swap [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(630)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	243
Reclassification from accumulated other comprehensive income, current period, net of tax	21
Other Comprehensive Income (Loss), before Reclassifications, before Tax	264
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (366)