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Broadcast Licenses and Other Intangibles Assets (Details 1) | 12 Months Ended | 3 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2012 Maximum [Member] | Dec. 31, 2011 Maximum [Member] | Dec. 31, 2012 Minimum [Member] | Dec. 31, 2011 Minimum [Member]
Impairment Test Key Estimates and Assumptions [Line Items] |  |  |  |  |
Discount rates |  | 12.20% | 12.20% | 12.00% | 11.90%
Operating profit margin ranges |  | 35.80% | 35.80% | 17.40% | 17.40%
Market long-term revenue growth rates |  | 3.10% | 3.00% | 1.75% | 2.00%
Fair Value Inputs Long Term Revenue Growth Rate Increase From Estimate | 46.00% |  |  |  |

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Long-term pre-tax operating income as a percentage of net sales, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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