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Equity Incentive Plans - Employee Stock Purchase Plan (Details) - ESPP $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Shares Available for Grant
Shares available for grant, beginning (shares)	349,647
Shares purchased (shares)	(386,664)
Shares available for grant, ending (shares)	898,982
Number of Shares Purchased
Purchased, beginning (shares)	661,611
Shares purchased (shares)	(386,664)
Purchased, ending (shares)	1,048,275
Purchase Price per Share (in dollars per share) | $ / shares	$ 2.12
Gross Proceeds | $	$ 819

X

- Definition

Employee Stock Purchase Plan, Shares Available

+ References

No definition available.

+ Details

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- Definition

Employee Stock Purchase Plan, Shares Purchased

+ References

No definition available.

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- Definition

The amount of gross proceeds received from shares issued to employees under the plan.

+ References

No definition available.

+ Details

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- Definition

Share-Based Compensation Arrangement By Share-based Payment Award, Employees Stock Purchase Plan, Purchased, Number

+ References

No definition available.

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X

- Definition

Represents share based compensation arrangement by share based payment award number of shares available for grants options, purchase during the period.

+ References

No definition available.

+ Details

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- Definition

Represents the purchase price per share of shares issued to employees under the plan.

+ References

No definition available.

+ Details

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X

- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Number of shares issued under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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