Accumulated Other Comprehensive Income , Equity and Redeemable Noncontrolling Interests - Changes in Accumulated Other Comprehensive Income (Loss) (Phantoms) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Equity [Abstract]
Other comprehensive income (loss) related to benefit plan liability, tax	$ (280)	$ (74)
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax		(703)
Other comprehensive income (loss) related to fair value change of derivatives, tax	536	(59)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Noncontrolling Interest	$ 300