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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Allowance for doubtful accounts $ 4.1 $ 8.0
Preferred stock par value per share $ 0.01 $ 0.01
Preferred stock shares authorized 20,000,000 20,000,000
Preferred stock shares issued 0 0
Preferred stock shares outstanding 0 0
Common Class A    
Common stock par value per share $ 0.01 $ 0.01
Common stock shares authorized 120,000,000 120,000,000
Common stock shares issued 3,097,193 3,000,000
Common stock shares outstanding 3,097,193 3,000,000
Common Class B    
Common stock par value per share $ 0.01 $ 0.01
Common stock shares authorized 60,000,000 60,000,000
Common stock shares issued 10,750,000 10,750,000
Common stock shares outstanding 10,750,000 10,750,000