Reclassification of Pension and Post-retirement Benefit Plan Out of Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified			3 Months Ended				3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Parent [Member]	Mar. 31, 2013 Parent [Member]	Mar. 31, 2014 Parent [Member]	Mar. 31, 2013 Parent [Member]	Mar. 31, 2014 Noncontrolling Interest [Member]	Mar. 31, 2013 Noncontrolling Interest [Member]	Mar. 31, 2014 Noncontrolling Interest [Member]	Mar. 31, 2013 Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period			$ (77,080)	$ (132,031)
Amortization of prior service cost			(63)	(80)
Recognized net actuarial losses			2,286	3,465
Tax benefit			(805)	(1,278)
Reclassification from AOCI, current period, net of tax			1,418	2,107
Balance at end of period			(75,662)	(129,924)
Beginning balance			(1,189)	4,959	(2,005)	(81)	(1,602)	(469)	(1,744)	(1,017)
Foreign currency translation adjustments, parent			(816)	(5,040)
Foreign currency translation adjustments, noncontrolling interest							(142)	(548)
Ending balance	$ (77,667)	$ (78,269)