Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2022	Dec. 31, 2021
Stockholders' equity:
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)	5,781,764	3,390,131
Class A common stock
Stockholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	250,000,000	250,000,000
Common stock, issued	47,855,259	47,805,259
Common stock, outstanding	41,789,323	44,130,956
Class B common stock
Stockholders' equity:
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	41,466,964	41,466,964
Class C common stock
Stockholders' equity:
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	1	1
Common stock, issued	1	1
Common stock, outstanding	1	1