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Subsequent Events - Additional Information (Detail) (USD $)
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1 Months Ended | |||||||||||||||||||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 03, 2012
WMUU-FM
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Dec. 12, 2012
9 5/8% Senior Secured Second Lien Notes
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Jun. 01, 2012
9 5/8% Senior Secured Second Lien Notes
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Dec. 12, 2011
9 5/8% Senior Secured Second Lien Notes
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Dec. 11, 2011
9 5/8% Senior Secured Second Lien Notes
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Sep. 06, 2011
9 5/8% Senior Secured Second Lien Notes
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Jun. 01, 2011
9 5/8% Senior Secured Second Lien Notes
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Dec. 01, 2010
9 5/8% Senior Secured Second Lien Notes
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Jun. 01, 2010
9 5/8% Senior Secured Second Lien Notes
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Dec. 01, 2009
9 5/8% Senior Secured Second Lien Notes
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Feb. 25, 2013
Subsequent Event
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Feb. 05, 2013
Subsequent Event
WMUU-FM
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Feb. 25, 2013
Subsequent Event
9 5/8% Senior Secured Second Lien Notes
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Dec. 15, 2013
Subsequent Event
9 5/8% Senior Secured Second Lien Notes
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Dec. 12, 2013
Subsequent Event
9 5/8% Senior Secured Second Lien Notes
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Jun. 01, 2013
Subsequent Event
9 5/8% Senior Secured Second Lien Notes
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Feb. 25, 2013
Subsequent Event
Revolving Credit Facilities [Member]
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| Subsequent Event [Line Items] | ||||||||||||||||||||
| Debt, issuance of principal amount | $ 300,000,000 | $ 300,000,000 | ||||||||||||||||||
| Credit facility, borrowing capacity | 25,000,000 | |||||||||||||||||||
| Percent of debt purchase price | 103.00% | 103.00% | 103.00% | 102.875% | 103.00% | 103.00% | 103.00% | 100.00% | 103.00% | 10.00% | 10.00% | |||||||||
| Redemption period | 12 months | |||||||||||||||||||
| Principal repurchased or redeemed | 4,000,000 | 17,500,000 | 12,500,000 | 12,500,000 | 5,000,000 | 17,500,000 | 12,500,000 | 17,500,000 | 30,000,000 | 4,000,000 | 26,000,000 | |||||||||
| Business acquisition total purchase price | 8,560,000 | 6,000,000 | 6,000,000 | |||||||||||||||||
| Business acquisition due on close of transaction | 10,695,000 | 9,151,000 | 1,000,000 | |||||||||||||||||
| Business acquisition liability incurred | 2,000,000 | |||||||||||||||||||
| Business acquisition liability incurred | $ 3,000,000 | $ 3,000,000 |