Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Stockholders' equity (deficit)
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	20,000,000	20,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Treasury Stock, (In shares)	1,501,690	572,447
Common Class A
Stockholders' equity (deficit)
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	250,000,000	250,000,000
Common stock, issued	47,264,560	43,083,008
Common stock, outstanding	45,478,698	42,226,389
Common Class B
Stockholders' equity (deficit)
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	75,000,000	75,000,000
Common stock, issued	69,066,445	69,066,445
Common stock, outstanding	42,007,663	45,999,132
Common Class C
Stockholders' equity (deficit)
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	1	1
Common stock, issued	1	1
Common stock, outstanding	1	1