Equity Incentive Plans, Employee Stock Purchase Plan and Stock-Based Compensation - Summary of the Status of Call Options (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options vested and exercised	257,834	257,834
Options vested and outstanding	4,445
Options unvested and outstanding	4,445	8,890
Total options granted	266,724	266,724