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Income Taxes - Deferred Income Tax Assets (Details) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
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Income Tax Disclosure [Abstract] |  |
Gain/Loss on disposals | $ 0 | $ (5,900)
Stock option expense | 242,700 | 154,300
NOL carryforward | 2,668,000 | 1,088,000
AMT credit carryforward | 0 | 1,005,300
Research and development credits | 1,656,500 | 1,656,500
Other | 11,200 |
Other |  | (6,500)
Deferred tax asset, net of deferred tax liabilities | 4,578,400 | 3,891,700
Valuation allowance | (4,578,400) | (3,891,700)
Net deferred tax asset | $ 0 | $ 0

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