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Note 5 - Notes Payable | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
Debt Disclosure [Text Block] | 5 . Notes Payable On February 28, 2018, we entered into a Senior Note Purchase Agreement with Georgia Research Alliance, Inc. (GRA) pursuant to which we issued a five -year Senior Promissory Note (the “GRA Note”) to GRA in exchange for $50,000. The GRA Note bears an annual interest rate of 5%, payable monthly, with principal repayments beginning in the second year. Future principal repayments are expected to be $ 12,500 in 2020, 2021 and 2022, and $2,243 in 2023. Interest expense related to the GRA Note was $2,097 and $2,083 for the years ended December 31, 2019 and 2018, respectively. On December 27, 2018, we issued short-term non-interest-bearing Term Promissory Notes (the “Term Notes”) to two current investors in exchange for an aggregate of $250,000. These notes are presented as current liabilities on the consolidated balance sheet at December 31, 2018. In February 2019, the Term Notes were cancelled in exchange for shares of our convertible preferred stock (see Note 7 ).

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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