Financial Assets and Liabilities and Non-Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Goodwill	$ 131,997,000
Broadcast licenses	384,400
Green Bay Option
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial Liabilities	(11,386,000)		(11,398,000)		(8,030,000)
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	516,391,000		376,000
Goodwill	131,997,000	[1]
Broadcast licenses	384,350,000	[2]
Financial Liabilities	(11,386,000)		(11,398,000)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	44,000		376,000
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	516,347,000
Goodwill	131,997,000	[1]
Broadcast licenses	384,350,000	[2]
Financial Liabilities	(11,386,000)		(11,398,000)
Fair Value, Measurements, Recurring | Interest Rate Cap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	44,000	[3]	376,000	[3]
Fair Value, Measurements, Recurring | Interest Rate Cap | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets	44,000	[3]	376,000	[3]
Fair Value, Measurements, Recurring | Green Bay Option
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial Liabilities	(11,386,000)	[4]	(11,398,000)	[4]
Fair Value, Measurements, Recurring | Green Bay Option | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial Liabilities	$ (11,386,000)	[4]	$ (11,398,000)	[4]

[1] As disclosed in Note 6, in accordance with the provisions of ASC 350, goodwill with a carrying amount of $232.0 million was written down to its implied fair value of $132.0 million, resulting in an impairment charge of $100.0 million, which was included in earnings for the period.

[2] As disclosed in Note 6, in accordance with the provisions of ASC 350, FCC licenses with a carrying amount of $399.1 million was written down to its fair value of $384.4 million, resulting in an impairment charge of $14.7 million, which has been included in earnings for the twelve month period ended December 31, 2012.

[3] The Company's only derivative financial instrument is the Interest Rate Cap pursuant to which the Company pays a fixed interest rate on a $71.3 million notional amount of its term loans. The fair value of the Interest Rate Cap is determined based on discounted cash flow analysis on the expected future cash flows using observable inputs, including interest rates and yield curves. Derivative valuations incorporate adjustments that are necessary to reflect the credit risk.

[4] The fair value of the Green Bay Option was determined using inputs that are supported by little or no market activity (a Level 3 measurement). The fair value represents an estimate of the net amount that the Company would pay if the option was transferred to another party as of the date of the valuation. The option valuation incorporates a credit risk adjustment to reflect the probability of default by the Company.