Other Income (Loss), Net (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule Of Equity Method Investments [Line Items]
Gain (loss) on sales / distributions of ownership interests	$ 269
Other	25	(58)
Total other income (loss) for parent company	294	(58)
Total other income (loss) for consolidated core companies	6	(6)
Other income (loss), net	$ 300	$ (64)