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Note 12 - Convertible Notes Payable - Convertible Notes Payable (Details) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Senior Secured Convertible Note [Member] | The Amended and Original Notes [Member] |  |
Securities Purchase Agreement dated July 10, 2019 |  | $ 2,255,454
Principal amount | 3,789,000 | 3,060,000
Less: conversion of principal into shares of common stock | (3,789,000) |
Net Principal amount |  | 3,060,000
Less: unamortized debt discount and beneficial conversion feature |  | (574,330)
Less: unamortized debt issuance costs |  | (230,216)
Notes payable, net of unamortized debt discount and debt issuance costs |  | 2,255,454
Principal amount |  | 3,060,000
Secured Redeemable Convertible Note [Member] |  |
Securities Purchase Agreement dated July 10, 2019 | 2,201,017 |
Notes payable, net of unamortized debt discount and debt issuance costs | 2,201,017 |
Secured Redeemable Convertible Note [Member] | February 2020 Note [Member] |  |
Securities Purchase Agreement dated July 10, 2019 | 150,849 |
Net Principal amount | 126,000 |
Less: unamortized debt issuance costs | (17,151) |
Notes payable, net of unamortized debt discount and debt issuance costs | 150,849 |
Principal amount | 126,000 |
Add: prepayment premium | 37,170 |
Add: accrued interest | 4,830 |
Secured Redeemable Convertible Note [Member] | May 2020 Note [Member] |  |
Securities Purchase Agreement dated July 10, 2019 | 1,196,837 |
Net Principal amount | 2,415,000 |
Less: unamortized debt discount and beneficial conversion feature | (1,013,146) |
Less: unamortized debt issuance costs | (205,017) |
Notes payable, net of unamortized debt discount and debt issuance costs | 1,196,837 |
Principal amount | 2,415,000 |
Secured Redeemable Convertible Note [Member] | June 2020 Note [Member] |  |
Securities Purchase Agreement dated July 10, 2019 | 853,331 |
Net Principal amount | 1,811,250 |
Less: unamortized debt discount and beneficial conversion feature | (745,575) |
Less: unamortized debt issuance costs | (212,344) |
Notes payable, net of unamortized debt discount and debt issuance costs | 853,331 |
Principal amount | 1,811,250 |
Secured Redeemable Convertible Note [Member] | January 2020 Note [Member] |  |
Securities Purchase Agreement dated July 10, 2019 |  |
Notes payable, net of unamortized debt discount and debt issuance costs |  |
Convertible Debt [Member] |  |
Securities Purchase Agreement dated July 10, 2019 |  | 2,255,454
Notes payable, net of unamortized debt discount and debt issuance costs |  | $ 2,255,454

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs and amount converted, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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