Stock-based Awards (Details 2 - RSUs) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Weighted-Average Grant Date Fair Value
Stock based compensation expense	$ 5,189	$ 4,450	$ 13,174	$ 15,992
Non-vested restricted stock unit awards
Number of Shares
Non-vested at the beginning of period (in shares)			7,536,114
Granted (in shares)			6,657,994
Vested (in shares)			(2,305,391)
Canceled/forfeited (in shares)			(1,436,311)
Non-vested at the end of the period (in per share)	10,452,406		10,452,406
Weighted-Average Grant Date Fair Value
Non-vested at the beginning of period (in dollars per share)			$ 4.60
Granted (in dollars per share)			4.03
Vested (in dollars per share)			4.64
Canceled/forfeited (in dollars per share)			4.54
Non-vested at the end of the period (in dollars per share)	$ 4.24		$ 4.24
Remaining stock based compensation expense for non vested restricted stock units	$ 37,500		$ 37,500
Weighted average period over which remaining stock based compensation expense for unvested awards is expected to be recognized (in years)			2 years 10 months 24 days
Stock based compensation expense	$ 4,800	$ 3,900	$ 12,100	$ 12,900