Summary of Option and Stock Appreciation Rights Activity (Details)	9 Months Ended
Sep. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Beginning Balance \| shares	2,456,979
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Beginning Balance	$ 2.90
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross \| shares	894,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 7.16
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period \| shares	(325,111)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 1.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period \| shares	(183,378)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 6.69
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance \| shares	2,842,490
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance	$ 4.10
Minimum [Member]
Range of Exercise Price, Beginning Balance	0.74
Range of Exercise Price, Granted	6.96
Range of Exercise Price, Exercised	0.74
Range of Exercise Price, Forfeited	0.74
Range of Exercise Price, Ending Balance	0.74
Maximum [Member]
Range of Exercise Price, Beginning Balance	35.20
Range of Exercise Price, Granted	9.87
Range of Exercise Price, Exercised	4.52
Range of Exercise Price, Forfeited	35.20
Range of Exercise Price, Ending Balance	$ 9.87

Range of Exercise Price, Ending Balance.

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Sharebased Compensation Shares Authorized Under StockOption Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Exercised.

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- Definition

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.

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

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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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Number of share options (or share units) exercised during the current period.

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