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Quarterly Results (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Quarterly Results                    
Revenue $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0
Gross Profit (Loss) (252,000) (180,000) 153,000 0       (1,000) (279,000) (1,000)
Operating Expense 1,604,000 1,497,000 1,589,000 1,963,000 1,621,000 2,138,000 2,447,000 2,376,000 6,653,000 8,582,000
Net loss attributed to common stockholders $ (1,854,000) $ (1,677,000) $ (1,390,000) $ (1,963,000) $ (1,616,000) $ (2,108,000) $ (2,426,000) $ (2,329,000) $ (6,884,000) $ (8,479,000)
Net Loss per share - basic and fully diluted (in dollars per share) $ (0.06) $ (0.06) $ (0.05) $ (0.07) $ (0.06) $ (0.08) $ (0.09) $ (0.09) $ 0.25 $ 0.32