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Stock-Based Compensation - Summary of Share Available for Grant Under the 2019 Plan (Details) - Equity Incentive Plan 2019 shares in Thousands	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Shares Available for Grant
Balance at the beginning of the year (in shares)	81
Balance at the end of the period (in shares)	71
Number of Shares
Balance at the beginning of the year (in shares)	159
Balance at the end of the period (in shares)	159
Weighted Average Exercise Prices
Weighted-average exercise price (in dollars per share) | $ / shares	$ 10.82
Weighted-average exercise price (in dollars per share) | $ / shares	$ 10.82
RSU's
Shares Available for Grant
RSUs granted (in shares)	(10)
Weighted Average Exercise Prices
RSUs granted (in dollars per share) | $ / shares	$ 3.25

X

- Definition

Represents the rollforward of Shares Available for Grant under the Plans.

+ References

No definition available.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Publisher FASB
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- 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.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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