Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Changes in Accumulated Other Comprehensive Income
Accumulated other comprehensive income - balance at January 1, 2014	$ (81,897)
Other comprehensive earnings before reclassifications	171
Amounts reclassified from accumulated other comprehensive income	987
Other comprehensive earnings/(loss)	1,158	(129)
Accumulated other comprehensive income - balance at March 30, 2014	(80,739)
Cumulative translation adjustment [Member]
Changes in Accumulated Other Comprehensive Income
Accumulated other comprehensive income - balance at January 1, 2014	1,804
Other comprehensive earnings before reclassifications	204
Amounts reclassified from accumulated other comprehensive income
Other comprehensive earnings/(loss)	204
Accumulated other comprehensive income - balance at March 30, 2014	2,008
Defined benefit pension item [Member]
Changes in Accumulated Other Comprehensive Income
Accumulated other comprehensive income - balance at January 1, 2014	(83,105)
Other comprehensive earnings before reclassifications
Amounts reclassified from accumulated other comprehensive income	914
Other comprehensive earnings/(loss)	914
Accumulated other comprehensive income - balance at March 30, 2014	(82,191)
Unrealized gains and losses on cash flow hedges [Member]
Changes in Accumulated Other Comprehensive Income
Accumulated other comprehensive income - balance at January 1, 2014	(596)
Other comprehensive earnings before reclassifications	(33)
Amounts reclassified from accumulated other comprehensive income	73
Other comprehensive earnings/(loss)	40
Accumulated other comprehensive income - balance at March 30, 2014	$ (556)