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Statements of Stockholders' Equity (Parenthetical) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Statement of Stockholders' Equity [Abstract] |  |
Common stock, public offering costs | $ 315,818 | $ 586,779
Common stock, private placement costs | $ 15,836 | $ 303,450

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- Definition Offering Costs. + References No definition available. + Details
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- Definition Placement Costs. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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