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STANDBY EQUITY PURCHASE AGREEMENT AND CONVERTIBLE PROMISSORY NOTE - Convertible promissory note (Details) |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2022 USD ($) | Jun. 02, 2022 USD ($) item $ / shares | Aug. 31, 2023 USD ($) | Nov. 30, 2022 USD ($) D $ / shares | Oct. 31, 2022 USD ($) $ / shares | Mar. 31, 2022 shares | Dec. 31, 2022 USD ($) $ / shares | Sep. 30, 2022 $ / shares | Jun. 10, 2022
DEBT |  |  |  |  |  |  |  |  |
Proceeds from convertible promissory note |  |  |  |  |  |  | $ 14,700,000 |  |
Loss on extinguishment of debt |  |  |  |  |  |  | $ (2,054,000) |  |
Convertible promissory note |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 4.00% |  |  |  |  |
Interest rate in event of default (a a percent) |  |  |  | 15.00% |  |  |  |  |
Conversion price (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.40 |  |
Effective interest rate of debt |  |  |  |  |  |  |  |  | 7.50%
Equity securities with aggregate gross sale price |  |  |  | $ 5,000,000.0 |  |  |  |  |
Common shares issued on conversion of convertible notes |  |  |  |  |  |  | 8,500,000 |  |
Contractual interest expense |  |  |  |  |  |  | $ 1,100,000 |  |
Unpaid interest converted into shares of common stock | shares |  |  |  |  |  | 8,628,024 |  |  |
Convertible promissory note | Interest Expense. |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Contractual interest expense |  |  |  |  |  |  | $ 13,000 |  |
Convertible promissory note | Yorkville |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Discount on issue (as a percent) |  | 2.00% |  |  |  |  |  |  |
Proceeds from convertible promissory note |  | $ 14,700,000 |  |  |  |  |  |  |
Loan amount |  | $ 15,000,000.0 |  |  |  |  |  |  |
Number of periodic payments | item |  | 5 |  |  |  |  |  |  |
Periodic payments | $ 3,000,000.0 | $ 3,000,000.0 | $ 3,000,000.0 |  |  |  |  |  |
Monthly payment deferral (as a percent) |  | 50.00% |  |  |  |  |  |  |
Number of periodic payments deferral | item |  | 2 |  |  |  |  |  |  |
Deferred periodic payment | $ 1,500,000 |  | $ 1,500,000 |  |  |  |  |  |
Interest rate |  | 4.00% |  |  |  |  |  |  |
Interest rate in event of default (a a percent) |  | 15.00% |  |  |  |  |  |  |
Threshold share price for repayment of debt at premium (in dollars per share) | $ / shares |  | $ 2.25 |  |  |  |  |  |  |
Conversion price (in dollars per share) | $ / shares |  | $ 3.75 |  |  |  |  |  |  |
Notice period for debt redemption if stock price less than conversion price. |  | 5 days |  |  |  |  |  |  |
Notice period for debt redemption |  | 15 days |  |  |  |  |  |  |
Convertible promissory note | Yorkville | Share price greater or equal to $2.25 |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Premium on repayment of debt (as a percent) |  | 6.00% |  |  |  |  |  |  |
Convertible promissory note | Yorkville | Share price less than $2.25 |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Premium on repayment of debt (as a percent) |  | 4.00% |  |  |  |  |  |  |
Convertible promissory note | Accredited Investors |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Loan amount |  |  |  | 3,400,000 |  |  |  |  |
Convertible promissory note | Management |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Loan amount |  |  |  | $ 1,700,000 |  |  |  |  |
Amended and Restated Convertible Promissory Notes |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Cash payment premium |  |  |  |  | 12.00% |  |  |  |
Extinguishment of debt, change in the fair value percentage |  |  |  |  | 10.00% |  |  |  |
Conversion price (in dollars per share) | $ / shares |  |  |  |  | $ 1.26 |  |  | $ 3.75 |
Loss on extinguishment of debt |  |  |  |  | $ 2,100,000 |  |  |  |
Embedded conversion feature |  |  |  |  | 1,600,000 |  |  |  |
Excess of the fair value of the A&R Promissory Note |  |  |  |  | $ 9,400,000 |  |  |  |
Second Amended and Restated Convertible Promissory Notes |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Debt conversion, Weighted Average Price, Percentage |  |  |  | 88.00% |  |  |  |  |
Conversion price (in dollars per share) | $ / shares |  |  |  | $ 1.26 |  |  |  |  |
Threshold Trading Days | D |  |  |  | 3 |  |  |  |  |
Effective interest rate of debt |  |  |  | 3.10% |  |  |  |  |
Embedded conversion feature |  |  |  | $ 20,000 |  |  |  |  |
Second Amended and Restated Convertible Promissory Notes | Due by November 25, 2022 |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Periodic payments |  |  |  | 1,300,000 |  |  |  |  |
Second Amended and Restated Convertible Promissory Notes | Due by November 29, 2022 |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Periodic payments |  |  |  | 1,700,000 |  |  |  |  |
Second Amended and Restated Convertible Promissory Notes | Due by December 23, 2022 |  |  |  |  |  |  |  |  |
DEBT |  |  |  |  |  |  |  |  |
Periodic payments |  |  |  | $ 6,000,000.0 |  |  |  |  |

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