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Stock Compensation Plans and Share-Based Compensation Awards - Share based compensation expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Feb. 25, 2020	May 22, 2018
Stock Compensation Plans and Share-Based Compensation Awards
Share-based compensation expense	$ 7,707	$ 6,489	$ 14,710	$ 12,287
Income tax benefit	$ (1,237)	$ (963)	$ (2,365)	$ (1,921)
2018 Plan \| Class A Common Stock
Stock Compensation Plans and Share-Based Compensation Awards
Shares reserved for issuance						7,792,162
Amended and Restated 2018 Plan \| Class A Common Stock
Stock Compensation Plans and Share-Based Compensation Awards
Shares reserved for issuance					15,142,162