Share Based Compensation - Schedule of Outstanding Restricted Stock Awards And Restricted Stock Units Activity (Details) - Restricted Stock Award (RSAs) And Restricted Stock Units (RSU) - Class A Common Stock - $ / shares		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested, Beginning Balance			1,818,675
Granted		3,000,229	1,148,844
Forfeited	[1]	152,976	47,847	[2]
Vested		575,301	501,818
Unvested, Ending Balance		2,271,952	2,417,854
Weighted average grant date fair value, Beginning Balance			$ 12.39
Weighted average grant date fair value, Granted		$ 11.73	17.36
Weighted average grant date fair value, Forfeited	[1]	11.82	13.56	[2]
Weighted average grant date fair value, Vested		11.64	12.01
Weighted average grant date fair value, Ending Balance		$ 11.75	$ 23.33

[1] Upon vesting, award-holders elected to sell shares to the Company in order to satisfy the associated tax obligations. The awards are not deemed outstanding; further, these forfeited shares are added back to the amount of shares available for grant under the 2019 Equity Incentive Plan.

[2] The forfeited shares include employee terminations during the nine months ended September 30, 2020; further, these forfeited shares are added back to the amount of shares available for grant under the 2019 Equity Incentive Plan.