Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	$ (38,250)	$ (41,485)	$ (25,599)
Other comprehensive income before reclassifications	5,300	929	(17,831)
Amounts reclassified from AOCI	3,422	2,306	1,945
Other comprehensive income (loss)	8,722	3,235	(15,886)
Accumulated Other Comprehensive Income (Loss), ending Balance	(29,528)	(38,250)	(41,485)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	(2,886)	(9,086)	3,485
Other comprehensive income before reclassifications	(8,085)	6,200	(12,571)
Amounts reclassified from AOCI
Other comprehensive income (loss)	(8,085)	6,200	(12,571)
Accumulated Other Comprehensive Income (Loss), ending Balance	(10,971)	(2,886)	(9,086)
Defined Benefit Pension Plan Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	(35,498)	(32,398)	(29,084)
Other comprehensive income before reclassifications	13,417	(5,387)	(5,259)
Amounts reclassified from AOCI	3,409	2,287	1,945
Other comprehensive income (loss)	16,826	(3,100)	(3,314)
Accumulated Other Comprehensive Income (Loss), ending Balance	(18,672)	(35,498)	(32,398)
Cash Flow Hedge Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), beginning balance	134	(1)
Other comprehensive income before reclassifications	(32)	116	(1)
Amounts reclassified from AOCI	13	19
Other comprehensive income (loss)	(19)	135	(1)
Accumulated Other Comprehensive Income (Loss), ending Balance	$ 115	$ 134	$ (1)