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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Accounts receivable, allowance for doubtful accounts (in dollars) $ 5.2 $ 5.7
Preferred Stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred Stock, shares authorized 100,000 100,000
Preferred Stock, shares issued 0 0
Preferred Stock, shares outstanding 0 0
Common Stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common Stock, shares authorized 240,000,000 240,000,000
Common Stock, shares issued 80,336,211 81,084,751
Common Stock, shares outstanding 80,336,211 81,084,751
Non-voting Common Stock    
Common Stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common Stock, shares authorized 7,125,000 7,125,000
Common Stock, shares issued 0 0
Common Stock, shares outstanding 0 0
Class C Common Stock    
Common Stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common Stock, shares authorized 20,000,000 20,000,000
Common Stock, shares issued 0 0
Common Stock, shares outstanding 0 0