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STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Costs and expenses:        
Research and development $ 372 $ 440 $ 737 $ 1,102
General and administrative 938 1,068 1,913 2,187
Total costs and expenses 1,310 1,508 2,650 3,289
Loss from operations (1,310) (1,508) (2,650) (3,289)
Interest and other income 2 48 26 86
Interest expense (3) (3) (7) (6)
Loss before income taxes (1,311) (1,463) (2,631) (3,209)
Income tax benefit 9 27 9 109
Net loss $ (1,302) $ (1,436) $ (2,622) $ (3,100)
Net loss per share:        
Basic and diluted $ (0.73) $ (1.14) $ (1.55) $ (2.87)
Weighted average shares outstanding:        
Basic and diluted 1,793,900 1,263,768 1,693,985 1,080,885