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Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands | Preferred Stock [Member] Series C Preferred Stock [Member] | Preferred Stock [Member] Series D Preferred Stock [Member] | Preferred Stock [Member] Series E Preferred Stock [Member] | Preferred Stock [Member] Series F Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | AOCI Attributable to Parent [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2021 |  |  |  |  | $ 1 | $ 63,189 | $ 60 | $ (56,937) | $ 6,313
Balance, shares at Dec. 31, 2021 |  |  |  |  | 1,399,890 |  |  |  |
Stock-based compensation |  |  |  |  |  | 354 |  |  | 190
Issuance of common stock, net of offering costs of $785,084 |  |  |  |  | $ 1 | 2,089 |  |  | 2,090
Issuance of common stock, net of offering costs of shares |  |  |  |  | 240,000 |  |  |  |
Issuance of redeemable Series F preferred stock |  |  |  |  |  |  |  |  |
Issuance of redeemable SeriesF preferred stock, shares |  |  |  | 27,998,000 |  |  |  |  |
Redemption of redeemable Series F preferred stock |  |  |  |  |  |  |  |  |
Redemption of redeemable SeriesF preferredstock, shares |  |  |  | (27,998,000) |  |  |  |  |
Exercise of options |  |  |  |  |  | 2 |  |  | 2
Exercise of options, shares |  |  |  |  | 1,256 |  |  |  |
Other comprehensive loss |  |  |  |  |  |  | (78) |  | (78)
Net loss |  |  |  |  |  |  |  | (5,448) | (5,448)
Balance at Dec. 31, 2022 |  |  |  |  | $ 2 | 65,634 | (18) | (62,385) | 3,233
Balance, shares at Dec. 31, 2022 |  |  |  |  | 1,641,146 |  |  |  |
Stock-based compensation |  |  |  |  |  | 293 |  |  | 293
Issuance of common stock, net of offering costs of $785,084 |  |  |  |  |  | 4,215 |  |  | 4,215
Issuance of common stock, net of offering costs of shares |  |  |  |  | 180,000 |  |  |  |
Exercise of options |  |  |  |  |  | 7 |  |  | 7
Exercise of options, shares |  |  |  |  | 5,458 |  |  |  |
Other comprehensive loss |  |  |  |  |  |  | (49) |  | (49)
Net loss |  |  |  |  |  |  |  | (3,711) | (3,711)
Exercise of pre-funded warrants |  |  |  |  |  |  |  |  |
Exercise of pre-funded warrants, shares |  |  |  |  | 203,977 |  |  |  |
Rounding-up of fractional shares due to reverse stock split |  |  |  |  |  |  |  |  |
Rounding up of fractional shares due to stock split, shares |  |  |  |  | 15,726 |  |  |  |
Balance at Dec. 31, 2023 |  |  |  |  | $ 2 | $ 70,149 | $ (67) | $ (66,096) | $ 3,988
Balance, shares at Dec. 31, 2023 |  |  |  |  | 2,046,307 |  |  |  |

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