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CERTAIN RELATIONSHIPS AND RELATED-PARTY TRANSACTIONS (Details) (USD $)
Share data in Millions, unless otherwise specified |
1 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | |||||||||||||
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Jun. 30, 2011
Liberty Media [Member]
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Feb. 28, 2011
Liberty Media [Member]
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Sep. 30, 2012
Liberty Media [Member]
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Sep. 30, 2012
ATC Aviation, Inc. [Member]
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Sep. 30, 2011
ATC Aviation, Inc. [Member]
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Sep. 30, 2012
ATC Aviation, Inc. [Member]
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Sep. 30, 2011
ATC Aviation, Inc. [Member]
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Jan. 31, 2011
Front Line [Member]
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Jan. 31, 2011
Azoff Trust [Member]
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Jan. 31, 2011
Employee of Subsidiary [Member]
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Sep. 30, 2012
Other Related Parties [Member]
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Sep. 30, 2011
Other Related Parties [Member]
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Sep. 30, 2012
Other Related Parties [Member]
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Sep. 30, 2011
Other Related Parties [Member]
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Dec. 31, 2011
Other Related Parties [Member]
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Sep. 30, 2012
Director Related Parties [Member]
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Sep. 30, 2011
Director Related Parties [Member]
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Sep. 30, 2012
Director Related Parties [Member]
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Sep. 30, 2011
Director Related Parties [Member]
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Jan. 31, 2011
Board of Directors Chairman [Member]
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Sep. 30, 2011
Management of Subsidiary [Member]
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Sep. 30, 2012
Sublease [Member]
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Sep. 30, 2011
Sublease [Member]
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Sep. 30, 2012
Sublease [Member]
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Sep. 30, 2011
Sublease [Member]
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| Related Party Transaction [Line Items] | |||||||||||||||||||||||||
| Number of directors nominated by related party | 2 | ||||||||||||||||||||||||
| Common shares sold to related party pursuant to the subscription agreement (in shares) | 5.5 | 1.8 | |||||||||||||||||||||||
| Aggregate cash consideration of common shares sold | $ 57,700,000 | $ 18,800,000 | |||||||||||||||||||||||
| Revenue from transactions with related parties | 1,651,000 | 1,256,000 | 3,604,000 | 3,196,000 | 3,188,000 | 7,066,000 | 11,509,000 | 7,066,000 | |||||||||||||||||
| Expenses from transactions with related party | 100,000 | 600,000 | 1,200,000 | 1,200,000 | 10,123,000 | 1,837,000 | 13,980,000 | 7,667,000 | 4,021,000 | 6,940,000 | 13,174,000 | 8,369,000 | (200,000) | (200,000) | (600,000) | (600,000) | |||||||||
| Dividend paid by consolidated subsidiary | 20,100,000 | 3,000,000 | |||||||||||||||||||||||
| Dividend paid by consolidated subsidiary to parent | 15,000,000 | ||||||||||||||||||||||||
| Gross-up payment received by a related party | 600,000 | ||||||||||||||||||||||||
| Principal amount of promissory note made by a wholly owned subsidiary to a majority owned subsidiary | 20,700,000 | ||||||||||||||||||||||||
| Interest rate of promissory note (in hundredths) | 4.50% | ||||||||||||||||||||||||
| Deferred consideration paid in connection with business combination | 6,800,000 | ||||||||||||||||||||||||
| Noncontrolling interest in clubs and theaters venue promotion business sold (in hundredths) | 49.90% | ||||||||||||||||||||||||
| Number of employees that partially own business | 2 | ||||||||||||||||||||||||
| Cash and assets received from divestiture of noncontrolling interest in a business | 12,600,000 | ||||||||||||||||||||||||
| Receivable balance | $ 12,300,000 | $ 12,300,000 | $ 13,300,000 | ||||||||||||||||||||||