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Acquisitions (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Ruckus Sports LLC and UK Elite Soccer, Inc. [Member]
Jun. 30, 2013
Ruckus Sports LLC and UK Elite Soccer, Inc. [Member]
Dec. 31, 2012
Ruckus Sports LLC and UK Elite Soccer, Inc. [Member]
Jan. 31, 2013
Ruckus Sports LLC [Member]
director
Jun. 30, 2013
Ruckus Sports LLC [Member]
May 31, 2013
Ruckus Sports LLC [Member]
Jun. 30, 2013
UK Elite Soccer, Inc. [Member]
Jul. 31, 2013
Subsequent Event [Member]
Ruckus Sports LLC [Member]
Equity Method Investment, Ownership Percentage (as a percent)               20.00% 30.00%      
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred             $ 0.1          
Cost of Acquired Entity, Cash Paid             3.1          
Percentage of Voting Interests Acquired, Additional Membership Interest (as a percent)               40.00%        
Period During Which Company has the Option to Acquire Additional Interest (in years)               2 years        
Number of Directors Appointed (in directors)               2        
Number of Directors on Board (in directors)               3        
Control Premium (as a percent)               50.00%        
Percentage of voting interests acquired (as a percent)                   10.00% 80.00% 15.00%
Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual         0.9 0.9            
Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual         0.5 0.8            
Income Benefit, Measurement Period Adjustment $ 15.1 $ 15.1 $ 15.1 $ 15.1