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Consolidated Statements of Stockholders' Equity (Parentheticals) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Sale of Common Stock in Class A Units [Member] |  |
Issuance of common stock, issuance costs |  | $ 65,816
Issuance of common stock and warrants, issuance costs | $ 1,333,449 | 768,412
Issuance of common stock, issuance costs |  | $ 267,231

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- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock and warrants. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References No definition available. + Details
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- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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