Noncontrolling Interests (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Noncontrolling Interest [Line Items]
Beginning noncontrolling interests	$ 45,403	$ 40,280
Net income attributable to noncontrolling interests	10,285	5,123	13,842
Ending noncontrolling interests	$ 55,688	$ 45,403	$ 40,280