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Note 12 - Convertible Note | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Debt Disclosure [Text Block] | NOTE 12. CONVERTIBLE NOTE On March 26, 2019, the Company entered into a Securities Purchase Agreement with Iliad Research and Trading, L.P. (the “Lender”), pursuant to which the Company issued a Secured Convertible Promissory Note (the “Convertible Note”) to the Lender dated as of March 26, 2019. The Convertible Note had an original principal amount of $2.2 million, beared interest at a rate of 10% per annum and matured on September 26, 2020, unless earlier paid, redeemed or converted in accordance with its terms. The Company received net proceeds of $2.0 million after deducting an original issue discount of $0.2 million and debt issuance cost of Lender’s transaction fees of $15 thousand. The Company recognized an additional $0.2 million of debt issuance costs associated with the issuance of the Convertible Note. The Convertible Note was repaid in full during the third quarter of 2020. Upon full repayment, the Company was released from the Convertible Note. During the year ended December 31, 2020, the effective interest rate on the Convertible Note was 20%. Interest expense recognized, including amortization of the issuance costs and debt discount, was $0.2 million during the year ended December 31, 2020.

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