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Organization and Business (Narrative) (Details) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 13, 2021 USD ($) $ / shares shares | Apr. 05, 2021 | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Apr. 14, 2021 shares
Stock split reverse description |  | On April 5, 2021, the Company effected a 1-for-4.4748 reverse stock split of its common stock. The par value and the authorized number of shares of the common stock were not adjusted as a result of the reverse stock split. The reverse stock split resulted in an adjustment to the Series A and Series B convertible preferred stock conversion prices to reflect a proportional decrease in the number of shares of common stock to be issued upon conversion. The accompanying consolidated financial statements and notes to the consolidated financial statements give retroactive effect to the reverse stock split for all periods presented. |  |  |  |
Stock split reverse conversion ratio |  | 0.2235 |  |  |  |
Cash, cash equivalents at carrying value and short term investments |  |  |  | $ 138,700 |  |
Accumulated deficit |  |  | $ 97,764 | 97,800 | $ 84,728 |
Net loss |  |  | 13,036 | 7,212 |  |
Cash used for operating activities |  |  | $ 8,999 | $ 8,589 |  |
IPO [Member] |  |  |  |  |  |
Common stock issued, Shares | shares | 6,250,000 |  |  |  |  |
Share price | $ / shares | $ 15.00 |  |  |  |  |
Proceeds from issuance initial public offering | $ 93,800 |  |  |  |  |
Initial public offering underwriting discounts and commissions | 6,600 |  |  |  |  |
Initial public offering offering expenses | $ 2,600 |  |  |  |  |
Convertible preferred stock [Member] |  |  |  |  |  |
Preferred stock, shares outstanding | shares | 71,183,500 |  |  |  |  | 0
Convertible preferred stock [Member] | IPO [Member] |  |  |  |  |  |
Shares issued from conversion of convertible stock | shares | 15,907,629 |  |  |  |  |

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