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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Stock-based Compensation Expense Stock-based compensation expense has been reported in the Company’s condensed statements of operations for the three and six months ended June 30, 2021 and 2020 as follows (in thousands):
Three Months Ended
June 30,
Six Months Ended
June 30,
2021202020212020
General and administrative
$510 $402 $984 $742 
Research and development
219 173 414 304 
Total stock-based compensation
$729 $575 $1,398 $1,046