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Quarterly Results (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |
Revenue | $ 180,000 | $ 0 | $ 0 | $ 360,000 | $ 361,000 | $ 260,000 | $ 0 | $ 0 | $ 540,000 | $ 621,000
Gross Profit (Loss) | 66,000 | (15,000) | 0 | 109,000 | (77,000) | 213,000 | 0 | 0 | 160,000 | 136,000
Operating Expense | 2,659,000 | 2,460,000 | 2,251,000 | 2,502,000 | 2,232,000 | 4,066,000 | 2,442,000 | 2,601,000 | 9,872,000 | 11,341,000
Net Loss | $ (2,593,000) | $ (2,472,000) | $ (2,236,000) | $ (2,379,000) | $ (2,306,000) | $ (3,846,000) | $ (2,431,000) | $ (2,589,000) | $ (9,680,000) | $ (11,173,000)
Net Loss per share - basic and fully diluted (in dollars per share) | $ (0.17) | $ (0.16) | $ (0.17) | $ (0.16) | $ (0.17) | $ (0.30) | $ (0.19) | $ (0.20) | $ (0.63) | $ (0.86)

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