Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Changes in accumulated OCI [Roll Forward]
Beginning balance	$ (10,819)	$ (42,623)
Other comprehensive income (loss) before reclassifications	(193)	(6,009)
Amounts reclassified from accumulated OCI	227	575
Net current-period other comprehensive income	34	(5,434)
Ending balance	(10,785)	(48,057)
Reclassification adjustments out of accumulated OCI [Abstract]
Cost of goods sold	(495,777)	(482,850)
Noncontrolling interest	0	0
Net of tax and noncontrolling interest	(1,116)	(1,724)
Selling, general, and administrative expense	(32,183)	(31,343)
Cumulative Translation Adjustment [Member]
Changes in accumulated OCI [Roll Forward]
Beginning balance	(462)	(3,033)
Other comprehensive income (loss) before reclassifications	1,162	(5,290)
Amounts reclassified from accumulated OCI	0	0
Net current-period other comprehensive income	1,162	(5,290)
Ending balance	700	(8,323)
Unrealized (Losses)/Gains on Derivatives [Member]
Changes in accumulated OCI [Roll Forward]
Beginning balance	1,546	(166)
Other comprehensive income (loss) before reclassifications	(1,233)	(1,650)
Amounts reclassified from accumulated OCI	117	(74)
Net current-period other comprehensive income	(1,116)	(1,724)
Ending balance	430	(1,890)
Unrealized (Losses)/Gains on Derivatives [Member] | Amount Reclassified from Accumulated OCI [Member]
Reclassification adjustments out of accumulated OCI [Abstract]
Cost of goods sold	357	(90)
Property, plant and equipment, net	(276)
Amount before tax to be reclassified	81	(90)
Income tax benefit/expense	36	16
Net of tax	117	(74)
Net of tax and noncontrolling interest	117	(74)
Minimum Pension/OPEB Liability Adjustment [Member]
Changes in accumulated OCI [Roll Forward]
Beginning balance	(12,158)	(39,527)
Other comprehensive income (loss) before reclassifications	(107)	890
Amounts reclassified from accumulated OCI	110	649
Net current-period other comprehensive income	3	1,539
Ending balance	(12,155)	(37,988)
Minimum Pension/OPEB Liability Adjustment [Member] | Amount Reclassified from Accumulated OCI [Member]
Reclassification adjustments out of accumulated OCI [Abstract]
Selling, general, and administrative expense	124	968
Income tax expense	(14)	(319)
Net of tax	110	649
Noncontrolling interest	0	0
Net of tax and noncontrolling interest	110	649
Unrealized Gains on Equity Investments [Member]
Changes in accumulated OCI [Roll Forward]
Beginning balance	255	103
Other comprehensive income (loss) before reclassifications	(15)	41
Amounts reclassified from accumulated OCI	0	0
Net current-period other comprehensive income	(15)	41
Ending balance	$ 240	$ 144