Quarterly report pursuant to Section 13 or 15(d)

Share Repurchases (Details)

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Share Repurchases (Details) (Class A Common Stock, USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 3 Months Ended
Aug. 31, 2011
Jun. 30, 2014
Jun. 30, 2013
August 2011 authorization [Member]
     
Share Repurchases (Textual) [Abstract]      
Stock Repurchase Program $ 20.0    
Treasury Stock, Shares, Acquired   0 0
Stock Repurchase Program Remaining Authorized Repurchases Amount   $ 0.1  
Outside of Publically Announced Repurchase Program [Member]
     
Share Repurchases (Textual) [Abstract]      
Treasury Stock, Shares, Acquired   168,094 147,274
Treasury stock acquired volume weighted-average price   $ 3.48 $ 2.02