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v3.23.1

Debt (Details Textual) $ / shares in Units, $ in Thousands |  |  |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 28, 2022 USD ($) | Apr. 29, 2022 USD ($) | Jan. 04, 2022 USD ($) $ / shares shares | Jul. 02, 2021 USD ($) | Apr. 18, 2020 USD ($) | Dec. 17, 2019 USD ($) d $ / shares shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Sep. 12, 2021 $ / shares shares | Sep. 13, 2020 $ / shares shares
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Common stock shares issued | shares |  |  |  |  |  |  |  |  | 3,623,189 |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.001 | $ 0.001 | $ 0.001 |
Proceeds from issuance of short-term notes |  |  |  |  |  |  | $ 2,000 | $ 2,000 |  |
Proceeds of the Loan |  |  |  |  |  |  | 767 | 0 |  |
Short-term debt |  |  |  |  |  |  | 3,732 | 3,481 |  |
Offering price (Per share) | $ / shares |  |  |  |  |  |  |  |  | $ 2.76 |
Principal and interest payments received as forgiveness |  | $ 953 |  |  |  |  |  |  |  |
Bridge Loan |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  |  | Oct. 01, 2021 |  |  |  |  |  |
Short-term debt |  |  |  | $ 2,000 |  |  |  |  |  |
Extended debt instrument maturity date |  |  |  | Jan. 03, 2022 |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Common stock shares issued | shares |  |  |  |  |  |  |  |  |  | 1,058,025
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.001
Warrants, Initial exercise price per share | $ / shares |  |  |  |  |  |  |  |  |  | 2.43
Offering price (Per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 2.4925
Beneficial owner | Common Stock |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Beneficial owner of the Company’s issued and outstanding shares of Common Stock |  |  |  |  |  | 46.60% |  |  |  |
Edward D. Bagley | Bridge Loan |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Principal amount of loan obtained |  |  | $ 2,000 |  |  |  |  |  |  |
Promissory note issuance date |  |  | Jul. 02, 2021 |  |  |  |  |  |  |
Debt Instrument Amended Date |  |  | Sep. 11, 2021 |  |  |  |  |  |  |
Edward D. Bagley | Bridge Loan | Notes Payable |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Interest rate of the loan | 12.00% |  |  | 8.00% |  |  |  |  |  |
Principal amount of loan obtained | $ 2,000 |  |  | $ 2,000 |  |  |  |  |  |
Promissory note issuance date | Oct. 28, 2022 |  |  | Jul. 02, 2021 |  |  |  |  |  |
Debt Instrument, Maturity Date | Oct. 28, 2023 |  |  |  |  |  |  |  |  |
Short-term debt | $ 2,000 |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] | Edward D. Bagley | Private Placement | Common Stock |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Common stock shares issued | shares |  |  | 1,538,461 |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  | $ 0.001 |  |  |  |  |  |  |
Offering price (Per share) | $ / shares |  |  | $ 1.3 |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Issuance and sale of secured convertible notes |  |  |  |  |  | $ 3,000 |  |  |  |
Original issue discount and issuance costs |  |  |  |  |  | 346 |  |  |  |
Proceeds from issuance of short-term notes |  |  |  |  |  | $ 2,654 |  |  |  |
Amortization of debt issuance costs and discounts |  |  |  |  |  |  | $ 197 | $ 196 |  |
Senior Convertible Notes and Warrants | Common Stock |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Warrants to purchase of common stock, shares | shares |  |  |  |  |  | 340,909 |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.001 |  |  |  |
Senior Convertible Notes |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Interest accrual at a variable rate adjusted on a quarterly basis, percent |  |  |  |  |  | 2.50% |  |  |  |
Published in the Wall Street Journal (New York edition) as of the beginning of such calendar quarter |  |  |  |  |  | Prime Rate |  |  |  |
Debt Instrument, Maturity Date |  |  |  |  |  | Dec. 17, 2023 |  |  |  |
Senior Convertible Notes | Greater of |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Interest accrual at a variable rate adjusted on a quarterly basis, percent |  |  |  |  |  | 5.25% |  |  |  |
Senior Convertible Notes | Common Stock |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes, Initial conversion price per share | $ / shares |  |  |  |  |  | $ 2.11 |  |  |  |
Senior Convertible Notes, Threshold percentage of stock price trigger |  |  |  |  |  | 120.00% |  |  |  |
Senior Convertible Notes, Threshold consecutive trading days | d |  |  |  |  |  | 90 |  |  |  |
Senior Convertible Notes | Common Stock | Greater of |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes, Threshold percentage of stock price trigger |  |  |  |  |  | 200.00% |  |  |  |
Warrants | Common Stock |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Warrants, Initial exercise price per share | $ / shares |  |  |  |  |  | $ 1.76 |  |  |  |
Paycheck Protection Program Loan |  |  |  |  |  |  |  |  |  |
Senior Convertible Notes and Warrants |  |  |  |  |  |  |  |  |  |
Loan term |  |  |  |  | 2 years |  |  |  |  |
Interest rate of the loan |  |  |  |  | 1.00% |  |  |  |  |
Principal amount of loan obtained |  | 1,499 |  |  | $ 1,499 |  |  |  |  |
Debt Instrument, deferred period for periodic payments of principal and interest |  |  |  |  | 16 months |  |  |  |  |
Interest amount of loan obtained |  | 31 |  |  |  |  |  |  |  |
Extinguishment of debt |  | 1,499 |  |  |  |  |  |  |  |
Gain on extinguishment of debt |  | $ 29 |  |  |  |  |  |  |  |

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