Stock Compensation - Summary of Restricted Stock Unit Activity (Details) - RSUs	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Number of Shares
Balance as of beginning of period (in shares) | shares	11,615,884
Granted (in shares) | shares	14,164,946
Vested (in shares) | shares	(4,925,493)
Forfeited and canceled (in shares) | shares	(4,224,836)
Balance as of end of period (in shares) | shares	16,630,501
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	0.91
Vested (in usd per share) | $ / shares	1.98
Forfeited and canceled (in usd per share) | $ / shares	2.24
Balance as of end of period (in usd per share) | $ / shares	$ 1.32