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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Stock-Based Compensation  
Schedule of expenses relating to employee and non-employee stock-based awards

Three Months Ended

Six Months Ended

June 30, 

June 30, 

    

2020

    

2019

    

2020

    

2019

    

Research and development

$

715

$

800

$

1,584

$

1,598

General and administrative

 

668

 

1,098

 

1,644

 

2,253

Total

$

1,383

$

1,898

$

3,228

$

3,851