Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Nov. 30, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Class A Common Stock [Member]
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	1,000,000,000		1,000,000,000
Common stock, shares issued	158,931,531		156,966,336	131,886,409
Common stock, shares outstanding	154,989,126	156,679,527	156,916,336		138,938,972	138,921,533	138,593,786
Treasury stock, shares issued	3,942,405		50,000
Class B Common Stock [Member]
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	500,000,000		500,000,000
Common stock, shares issued	21,285,533		21,285,533	21,285,537
Common stock, shares outstanding	21,285,533		21,285,533