Equity Incentive Plans - Stock Option Activity (Parenthetical) (Details)	12 Months Ended
Dec. 31, 2020 $ / shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Change of equity awards outstanding or equity awards, exercise price	$ 3.88

Change in the weighted average exercise price of options outstanding.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPeriodIncreaseDecreaseWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration