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Equity - Equity Incentive Plan (Details) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	12 Months Ended
	Jun. 17, 2021 shares	Dec. 31, 2019 shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Share-based compensation
Ownership Percentage Of Noncontrolling Interest Increase From Amount Granted As Compensation		1
Fair Value of stock award | $			$ 0	$ 1
Grants of stock options			1,065	743
Stock option forfeitures (in shares)			471	60
Exercise of stock options (in shares)			327	117
Share-based Compensation Outstanding - Reserved but unissued shares under the Plan		2,131	2,964	2,697
Exercise price (in dollars per share) | $ / shares			$ 3.15	$ 1.07
Equity Incentive Plan [Member]
Share-based compensation
Outstanding options and restricted stock units		2,697		3,076
Reserved but unissued shares under the Plans			2,901	1,217
Total authorized shares under the Plans			5,977	3,914
2021 Plan
Share-based compensation
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Increase Shares Available for Issuance	400
2011 Plan
Share-based compensation
Share-based Compensation Arrangement by Share-based Payment Award, Award Amount Carryover | $			$ 3,381

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Total amount of award carry forwarded to the new plan under share based payment awards.

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Maximum increase in shares available for issuance under share based payment awards.

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Aggregate number of common shares reserved for future issuance.

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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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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Gross number of share options (or share units) granted during the period.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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