Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity and Stock-Based Compensation (Details 3)

v3.20.1
Stockholders' Equity and Stock-Based Compensation (Details 3) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Stockholders' Equity and Stock-Based Compensation (Details 3)    
Research and development expenses $ 398,000 $ 966,000
General and administrative expenses 425,000 1,414,000
Total stock-based compensation expense $ 823,000 $ 2,380,000