Stock Compensation - Summary of Restricted Stock Unit Activity (Details) - RSUs	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Number of Shares
Balance as of beginning of period (in shares) | shares	11,615,884
Granted (in shares) | shares	12,299,276
Vested (in shares) | shares	(2,032,476)
Forfeited and canceled (in shares) | shares	(3,268,027)
Balance as of end of period (in shares) | shares	18,614,657
Weighted- Average Grant Date Fair Value
Balance as of beginning of period (in usd per share) | $ / shares	$ 2.44
Granted (in usd per share) | $ / shares	0.88
Vested (in usd per share) | $ / shares	2.77
Forfeited and canceled (in usd per share) | $ / shares	2.51
Balance as of end of period (in usd per share) | $ / shares	$ 1.36