Quarterly report pursuant to Section 13 or 15(d)

Other Long-Term Assets (Details)

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Other Long-Term Assets (Details) (USD $)
 9 Months Ended 1 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Jun. 30, 2013
KXMZ-FM
Sep. 30, 2014
KXMZ-FM
Other long-term assets          
Patents, net of amortization $ 7,091,000   $ 7,636,000    
Long-term security deposits 4,956,000   4,736,000    
Other 1,939,000   1,343,000    
Total other long-term assets 13,986,000   13,715,000    
Purchase price of assets of KXMZ-FM       600,000  
Purchase price of assets of KXMZ-FM paid in cash $ 0 $ 400,000     $ 400,000