Stock-Based Compensation (Schedule of Summary of Stock Option Activity) (Details)	9 Months Ended
Sep. 30, 2021 $ / shares shares
Options
Outstanding at January 1, 2021 \| shares	3,732,149
Granted \| shares	1,049,355
Exercised \| shares	(582,936)
Cancelled (forfeited) \| shares	(53,600)
Cancelled (expired) \| shares	(104)
Outstanding at September 30, 2021 \| shares	4,144,864
Weighted Average Exercise Price
Outstanding at January 1, 2021 \| $ / shares	$ 5.57
Granted \| $ / shares	15.66
Exercised \| $ / shares	3.98
Cancelled (forfeited) \| $ / shares	7.71
Cancelled (expired) \| $ / shares	162.09
Outstanding at September 30, 2021 \| $ / shares	$ 8.32

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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No definition available.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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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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No definition available.

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

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