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v3.23.1

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Cumulative Effect, Period of Adoption, Adjusted Balance | Preferred Stock | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Loss | Accumulated Deficit | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjusted Balance
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2021 |  |  | 876 | 6,368 |  |  |  |
Beginning balance at Dec. 31, 2021 | $ 6,209 |  | $ 0 | $ 0 | $ 144,953 | $ (3) | $ (138,741) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Issuance of common stock upon the exercise of warrants (in shares) |  |  |  | 85 |  |  |  |
Stock-based compensation | 44 |  |  |  | 44 |  |  |
Net loss | (2,821) |  |  |  |  |  | (2,821) |
Ending balance (in shares) at Mar. 31, 2022 |  |  | 876 | 6,453 |  |  |  |
Ending balance at Mar. 31, 2022 | 3,432 |  | $ 0 | $ 0 | 144,997 | (3) | (141,562) |
Beginning balance (in shares) at Dec. 31, 2021 |  |  | 876 | 6,368 |  |  |  |
Beginning balance at Dec. 31, 2021 | 6,209 |  | $ 0 | $ 0 | 144,953 | (3) | (138,741) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net loss | (10,300) |  |  |  |  |  |  |
Ending balance (in shares) at Dec. 31, 2022 |  |  | 876 | 9,849 |  |  |  |
Ending balance at Dec. 31, 2022 | $ (477) | $ (2) | $ 0 | $ 1 | 148,545 | (3) | (149,020) | $ (2)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Accounting Standards Update [Extensible List] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |  |
Issuance of common stock (in shares) |  |  |  | 1,995 |  |  |  |
Issuance of common stock | $ 3,025 |  |  | $ 1 | 3,024 |  |  |
Stock issued in exchange transactions (in shares) |  |  |  | 7,400 |  |  |  |
Stock issued in exchange transactions | 1,716 |  |  |  | 1,716 |  |  |
Stock-based compensation | 26 |  |  |  | 26 |  |  |
Net loss | (1,333) |  |  |  |  |  | (1,333) |
Ending balance (in shares) at Mar. 31, 2023 |  |  | 876 | 19,244 |  |  |  |
Ending balance at Mar. 31, 2023 | $ 2,955 |  | $ 0 | $ 2 | $ 153,311 | $ (3) | $ (150,355) |

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