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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]    
Renewable terms of FCC broadcasting licenses 8 years  
Weighted-average period before the next renewal of the Company's FCC broadcasting licenses 4 years 4 months 24 days  
Advertising agency commissions of gross revenue 15.00%  
Barter sales revenue from Broadcasting Service $ 3,700,000 $ 3,700,000
Barter sales expenses from Broadcasting Service 4,000,000 3,900,000
Unamortized debt issuance expense $ 1,804,390 1,555,992
Restatement Adjustment [Member] | Adjustments for New Accounting Principle, Early Adoption [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Deferred tax assets current, reclassified   200,000
Other Assets [Member] | Restatement Adjustment [Member] | Adjustments for New Accounting Principle, Early Adoption [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Unamortized debt issuance expense   1,600,000
Geographic Concentration Risk [Member] | Sales Revenue, Net [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Radio stations contributed to net revenue 49.70%  
Quu, Inc. [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Carrying value of the investment in Quu, Inc. $ 900,000 $ 900,000