Summary of Option and Stock Appreciation Rights Activity (Details)	12 Months Ended
Dec. 31, 2020 $ / shares shares
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Number of Options/SARs, Outstanding, Beginning Balance \| shares	1,857,599
Weighted Average Exercise Price per Share, Outstanding, Beginning Balance	$ 2.22
Number of Options/SARs, Granted \| shares	917,250
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 4.49
Number of Options/SARs, Exercised \| shares	(133,852)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 1.27
Number of Options/SARs, Forfeited \| shares	(184,018)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 5.17
Number of Options/SARs, Outstanding, Beginning Balance \| shares	2,456,979
Weighted Average Exercise Price per Share, Outstanding, Beginning Balance	$ 2.90
Minimum [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Range of Exercise Price, Begining Balance	0.74
Range of Exercise Price, Granted	3.22
Range of Exercise Price, Exercised	0.74
Range of Exercise Price, Forfeited	0.74
Range of Exercise Price, Ending Balance	0.74
Maximum [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Range of Exercise Price, Begining Balance	36.20
Range of Exercise Price, Granted	5.13
Range of Exercise Price, Exercised	2.15
Range of Exercise Price, Forfeited	36.20
Range of Exercise Price, Ending Balance	$ 35.20

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

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