Stock Incentive Plans - Schedule of Stock Options Valuation Assumptions Using a Black-Scholes Option Pricing Model (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, minimum	64.80%	62.70%	63.20%	62.70%
Expected volatility, maximum	65.40%	63.10%	65.40%	64.70%
Weighted-average risk-free interest rate, minimum	0.33%	1.95%	0.33%	1.95%
Weighted-average risk-free interest rate, maximum	0.54%	2.38%	1.73%	2.60%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	5 years 6 months	6 years 3 months	5 years 6 months	6 years 3 months
Underlying common stock fair value	$ 12.66	$ 19.51	$ 12.66	$ 19.51
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 years 3 months		6 years 3 months
Underlying common stock fair value	$ 18.04	$ 30.34	$ 21.75	$ 30.34