Stockholders' Equity - Schedule of Company's Stock Awards Granted (Details) - 2016 Equity Incentive Plan - $ / shares	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stock Options
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Grants		396,200	409,500	2,557,600	1,853,900
Weighted Average Grant Date Fair Value		$ 4.91	$ 2.45	$ 5.05	$ 4.61
Restricted Stock Units RSU
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Grants	228,200		228,200		228,200
Weighted Average Grant Date Fair Value			$ 8.13		$ 8.13