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FCC Broadcasting Licenses - Additional Information (Detail)
12 Months Ended
Jun. 25, 2015
USD ($)
License
Feb. 27, 2015
USD ($)
License
May. 01, 2014
USD ($)
License
Feb. 14, 2014
USD ($)
License
Dec. 31, 2015
FCC Broadcasting Licenses [Line Items]          
Translator licenses renewable term         8 years
Reach Communications, Inc. [Member]          
FCC Broadcasting Licenses [Line Items]          
Acquisition of translator licenses | $   $ 200,000      
Number of translator licenses acquired | License   1      
University of Northwestern [Member]          
FCC Broadcasting Licenses [Line Items]          
Acquisition of translator licenses | $ $ 200,000        
Number of translator licenses acquired | License 2        
CTC Media Group [Member]          
FCC Broadcasting Licenses [Line Items]          
Acquisition of translator licenses | $       $ 65,000  
Number of translator licenses acquired | License       1  
Starboard Media Foundation, Inc. [Member]          
FCC Broadcasting Licenses [Line Items]          
Acquisition of translator licenses | $       $ 15,000  
Number of translator licenses acquired | License       1  
Eastern Airwaves, LLC [Member]          
FCC Broadcasting Licenses [Line Items]          
Acquisition of translator licenses | $     $ 75,000    
Number of translator licenses acquired | License     1