| Total Acquisition Consideration Allocated (Detail) (USD $) | Sep. 30, 2013 | 
|---|---|
| Assets | |
| Property and equipment | $ 1,358,000 | 
| Broadcast licenses | 7,429,000 | 
| Goodwill | 58,000 | 
| Customer lists and contracts | 341,000 | 
| Domain and brand names | 409,000 | 
| Software | 80,000 | 
| Favorable and assigned lease | 709,000 | 
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total | 10,384,000 | 
| Broadcast | |
| Assets | |
| Property and equipment | 1,252,000 | 
| Broadcast licenses | 7,429,000 | 
| Goodwill | 37,000 | 
| Favorable and assigned lease | 709,000 | 
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total | 9,427,000 | 
| Internet | |
| Assets | |
| Property and equipment | 106,000 | 
| Goodwill | 21,000 | 
| Customer lists and contracts | 341,000 | 
| Domain and brand names | 409,000 | 
| Software | 80,000 | 
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total | $ 957,000 | 
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- Details 
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- Definition Business Acquisition, Purchase Price Allocation, Broadcast Licenses No definition available. 
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- Definition Business Acquisition Purchase Price Allocation Domain And Brand Names No definition available. 
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- Definition Business Acquisition Purchase Price Allocation Favourable Lease Arrangements No definition available. 
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- Definition Business Acquisition, Purchase Price Allocation, Intangible Assets, Customer Lists No definition available. 
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- Definition Business Acquisition, Purchase Price Allocation, Software No definition available. 
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- Definition Amount of assets acquired at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of property, plant, and equipment recognized as of the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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