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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Summary of Outstanding Stock Option Activity
The following table summarizes stock option activity during the years ended December 31, 2020 and 2019. All stock option activity was retroactively restated to reflect the converted options. See Note 2 for the conversion in connection with the Merger.

SharesWeighted-Average
Exercise Price		Weighted-Average
Remaining
Contractual Term
(years)
Options Outstanding at December 31, 2018
303,028 $26.20 2.8
Granted254,882 $9.54 
Cancelled/Forfeited(165,072)$27.24 
Options Outstanding at December 31, 2019
392,838 $15.09 5.4
Granted1,972,679 $9.07 
Cancelled/Forfeited(221,881)$18.57 
Options Outstanding at December 31, 2020
2,143,636 $9.19 9.5
Options Exercisable at December 31, 2020
15,859 $26.81 1.7
Weighted-Average Assumptions Used to Determine the Fair Value of Options Granted The weighted average assumptions used to determine the fair value of options granted in 2020 and 2019 are as follows:
20202019
Volatility52.99 %58.20 %
Risk free interest rate0.39 %1.89 %
Expected life (years)5.196.25
Dividend yield0 %0 %