Components of Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 441,615	$ 443,338
Less: accumulated depreciation	(186,913)	(187,435)
Property and equipment, net	254,702	255,903
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	105,876	96,071
Broadcasting and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	219,346	227,578
Broadcasting and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Broadcasting and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	7 years
Computer and capitalized software costs
Property, Plant and Equipment [Line Items]
Property and equipment, gross	22,750	20,457
Computer and capitalized software costs | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	1 year
Computer and capitalized software costs | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Property and equipment, gross	12,401	13,709
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Property and equipment, gross	30,521	32,386
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	49,804	50,296
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	9 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	20 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 917	$ 2,841