Quarterly report pursuant to Section 13 or 15(d)

Significant Transactions - Additional Information (Detail)

v2.4.0.6
Significant Transactions - Additional Information (Detail) (USD $)
1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended
Mar. 31, 2013
Mar. 14, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Mar. 14, 2013
9 5/8% Senior Secured Second Lien Notes
Dec. 12, 2012
9 5/8% Senior Secured Second Lien Notes
Jun. 01, 2012
9 5/8% Senior Secured Second Lien Notes
Mar. 31, 2013
9 5/8% Senior Secured Second Lien Notes
Dec. 31, 2012
9 5/8% Senior Secured Second Lien Notes
Dec. 12, 2011
9 5/8% Senior Secured Second Lien Notes
Sep. 06, 2011
9 5/8% Senior Secured Second Lien Notes
Jun. 01, 2011
9 5/8% Senior Secured Second Lien Notes
Dec. 01, 2010
9 5/8% Senior Secured Second Lien Notes
Jun. 01, 2010
9 5/8% Senior Secured Second Lien Notes
Mar. 31, 2013
Term Loan B
Mar. 14, 2013
Term Loan B
Mar. 31, 2013
Revolver
Mar. 14, 2013
Revolver
Feb. 15, 2013
WJKR-FM, Columbus, Ohio
Feb. 05, 2013
WMUU-FM, Greenville, South Carolina
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]                                            
Class A and Class B common stock, dividend declared date Mar. 18, 2013   Mar. 07, 2012 Mar. 18, 2013                                    
Class A and Class B common stock, dividend declared per share $ 0.05   $ 0.035 $ 0.05                                    
Class A and Class B common stock, dividend paid       $ 1,234,000 $ 850,000                                  
Class A and Class B common stock, payment date       Apr. 01, 2013                                    
Class A and Class B common stock, record date       Mar. 25, 3013                                    
Class A and Class B common stock, expected annual dividends 4,900,000     4,900,000                                    
senior secured credit facility                                 300,000,000 300,000,000   25,000,000    
Debt, interest rate 9.625%     9.625%                                    
Debt, maturity year 2016     2016           2016 2016                      
Loss on early retirement of long-term debt   33,000   (27,721,000)     26,900,000 200,000 900,000 800,000                        
Principal repurchased or redeemed             212,597,000 4,000,000 17,500,000     12,500,000 5,000,000 17,500,000 12,500,000 17,500,000            
Debt, purchase price             240,300,000 4,100,000 18,000,000                          
Percent of debt purchase price             110.65% 103.00% 103.00%                          
Amount paid for redemption             22,700,000                              
Unamortized Discount             837,000 17,000 80,000     62,000 26,000 93,000 70,000 105,000            
Bond issue costs             2,867,000 57,000 287,000     337,000 135,000 472,000 334,000 417,000            
Aggregate principal amount outstanding 306,664,000     306,664,000   268,980,000       899,000 212,622,000           298,509,000   4,000,000      
Restricted cash 970,000     970,000           970,000                        
Redemption price percentage                   103.00%                        
Business acquisition purchase price 9,427,000     9,427,000                                 4,000,000 5,400,000
Amount due on close of Transaction                                           1,000,000
Amount payable                                           2,000,000
Advertising cost                                           3,000,000
Acquisition payment date                                           2014-04
Discount on advertising credits       $ 600,000                                    
Advertising credits payable term       Ten                                    
Amortization period of interest expense       10 years