Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Preferred Stock, par value (usd per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized (shares)	5,000,000	5,000,000
Preferred Stock, Shares Issued (shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Treasury Stock, Shares (shares)	10,710,000	10,710,000
Common Class A [Member]
Common Stock, Shares Authorized (shares)	500,000,000	500,000,000
Common Stock, Shares, Issued	119,472,000	117,922,000
Common stock outstanding (shares)	119,472,000	117,922,000
Common Class B [Member]
Common Stock, Shares Authorized (shares)	150,000,000	150,000,000
Common Stock, Shares, Issued	28,888,000	28,897,000
Common stock outstanding (shares)	28,888,000	28,897,000