Debt (Details) - USD ($) |
1 Months Ended | 3 Months Ended | 5 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|---|
Jul. 13, 2021 |
Dec. 31, 2020 |
Nov. 30, 2020 |
Apr. 23, 2020 |
Sep. 30, 2021 |
May 31, 2021 |
Dec. 31, 2017 |
|
| Debt (Details) [Line Items] | |||||||
| Unpaid accrued interest | $ 191,000 | ||||||
| Conversion shares issued percentage | 25.00% | ||||||
| Initial Public Offering [Member] | |||||||
| Debt (Details) [Line Items] | |||||||
| Principal amount | $ 2,387,000 | ||||||
| Paycheck Protection Program [Member] | |||||||
| Debt (Details) [Line Items] | |||||||
| Debt instrument maturity period, description | the Company entered into an $18,000 loan with Silicon Valley Bank pursuant to the Small Business Administration’s (“SBA”) Paycheck Protection Program (“PPP”) as well as a $1,000 loan pursuant to the Economic Injury Disaster Assistance Program. The PPP loan proceeds are intended to be used for payroll over the eight-week period following the date of the loan. The loan terms provide that no principal or interest payments are due and interest will accrue at 1% per annum commencing on April 23, 2020 through October 23, 2020 (deferral period). Commencing one month after the deferral period and continuing monthly through the maturity of the loan on April 23, 2022, equal monthly payments of principal and interest are due. The Company classified the loans as a current liability, has applied for and received loan forgiveness in February 2021, and recorded a gain on extinguishment of debt in the statement of operations for the three months ended March 31, 2021. | ||||||
| 2021 Notes [Member] | |||||||
| Debt (Details) [Line Items] | |||||||
| Principal amount | $ 1,098,000 | ||||||
| 2018 Notes [Member] | |||||||
| Debt (Details) [Line Items] | |||||||
| Debt instrument maturity period, description | The 2021 Notes bear interest at a rate of 12% per annum, payable at maturity, and mature between January and May, 2022. The 2021 Notes shall automatically convert into shares of the Company’s common stock upon the closing of a financing pursuant to which the Company receives gross proceeds of at least $500,000 (a “Qualified Financing”) or upon a change of control. The 2021 Notes shall convert into such numbers of shares of the Company’s common stock equal to the conversion amount divided by the Conversion Price. “Conversion Price” means (i) in the event of a Qualified Financing, 70% of the price per share (or conversion price, as applicable) of common stock (or securities convertible into common stock, as applicable) sold in such financing or (ii) in the event of a change of control, the price per share reflected in such transaction. | ||||||
| 2020 Notes [Member] | |||||||
| Debt (Details) [Line Items] | |||||||
| Debt instrument maturity period, description | the Company issued convertible notes (the “2020 Notes”) in the aggregate principal amount of $1,290,000. The 2020 Notes bear interest at a rate of 12% per annum, payable at maturity, and mature between July and November, 2021. The 2020 Notes shall automatically convert into shares of the Company’s common stock upon the closing of a financing pursuant to which the Company receives gross proceeds of at least $500,000 (a “Qualified Financing”) or upon a change of control. The 2020 Notes shall convert into such numbers of shares of the Company’s common stock equal to the conversion amount divided by the Conversion Price. | ||||||
| Accrued interest | $ 53,000 | $ 431,000 | |||||
| Convertible notes | $ 186,000 | ||||||