Property And Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment	$ 198,687	$ 204,151
Less accumulated depreciation and amortization	89,082	85,033
Property and equipment, net	109,605	119,118
Office Building
Property, Plant and Equipment [Line Items]
Property and equipment	53,543	37,772
Computer Equipment And Software
Property, Plant and Equipment [Line Items]
Property and equipment	50,831	51,144
Furniture, Fixtures And Other Equipment
Property, Plant and Equipment [Line Items]
Property and equipment	64,359	51,860
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment	1,685	1,729
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment	8,421	8,182
Leasehold Land
Property, Plant and Equipment [Line Items]
Property and equipment	5,122	5,794
Residential Property
Property, Plant and Equipment [Line Items]
Property and equipment	785	884
Capital Advances / Work In Progress
Property, Plant and Equipment [Line Items]
Property and equipment	$ 13,941	$ 46,786