Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2015	$ (208,806)
Other comprehensive income before reclassifications	9,976
Amounts reclassified from accumulated other comprehensive loss	1,374
Other comprehensive income	11,350	$ (29,677)
Balance at March 31, 2016	(197,456)	$ (195,301)
Unrecognized Net Defined Benefit Plan Costs [Member]
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2015	(84,280)
Other comprehensive income before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	913
Other comprehensive income	913
Balance at March 31, 2016	(83,367)
Change in Fair Value of Derivatives [Member]
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2015	(988)
Other comprehensive income before reclassifications	(516)
Amounts reclassified from accumulated other comprehensive loss	461
Other comprehensive income	(55)
Balance at March 31, 2016	(1,043)
Foreign Currency Translation [Member]
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2015	(123,538)
Other comprehensive income before reclassifications	10,492
Amounts reclassified from accumulated other comprehensive loss	0
Other comprehensive income	10,492
Balance at March 31, 2016	$ (113,046)