Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2013			$ (38,119)
Other comprehensive loss before reclassifications			(42,287)
Amounts reclassified from accumulated other comprehensive loss			2,390
Other comprehensive loss	(33,603)	13,663	(39,897)	3,694
Balance at September 30, 2014	(78,016)	(106,219)	(78,016)	(106,219)
Unrecognized Net Defined Benefit Plan Costs [Member]
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2013			(38,921)
Other comprehensive loss before reclassifications			(267)
Amounts reclassified from accumulated other comprehensive loss			(502)
Other comprehensive loss			(769)
Balance at September 30, 2014	(39,690)		(39,690)
Change in Fair Value of Derivatives [Member]
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2013			(3,790)
Other comprehensive loss before reclassifications			(244)
Amounts reclassified from accumulated other comprehensive loss			2,892
Other comprehensive loss			2,648
Balance at September 30, 2014	(1,142)		(1,142)
Foreign Currency Translation [Member]
Other Comprehensive Income (Loss) [Roll Forward]
Balance at December 31, 2013			4,592
Other comprehensive loss before reclassifications			(41,776)
Amounts reclassified from accumulated other comprehensive loss			0
Other comprehensive loss			(41,776)
Balance at September 30, 2014	$ (37,184)		$ (37,184)