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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (CAPITAL DEFICIENCY) - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital Adjustment | Additional Paid-in Capital | Accumulated Deficit Adjustment | Accumulated Deficit | Adjustment | Total
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2022 |  | $ 54 |  | $ 379,167 |  | $ (389,861) |  | $ (10,640)
Beginning balance (in shares) at Dec. 31, 2022 | [1] | 53,790,167 |  |  |  |  |  |
Issuance of common stock under the Sales Agreement, net |  | $ 8 |  | 14,225 |  |  |  | 14,233
Issuance of common stock under the Sales Agreement, net (in shares) | [1] | 8,212,482 |  |  |  |  |  |
Share-based compensation related to stock options |  |  |  | 453 |  |  |  | 453
Share-based compensation related to restricted stock awards |  |  |  | 93 |  |  |  | 93
Net Income (Loss) |  |  |  |  |  | (3,131) |  | (3,131)
Ending balance at Mar. 31, 2023 |  | $ 62 |  | 393,938 |  | (392,992) |  | 1,008
Ending balance (in shares) at Mar. 31, 2023 | [1] | 62,002,649 |  |  |  |  |  |
Beginning balance at Dec. 31, 2023 |  | $ 73 |  | 415,045 |  | (381,549) |  | 33,569
Beginning balance (in shares) at Dec. 31, 2023 | [1] | 72,952,124 |  |  |  |  |  |
Share-based compensation related to stock options |  |  |  | 500 |  |  |  | 500
Share-based compensation related to restricted stock awards |  |  |  | 481 |  |  |  | 481
Share-based compensation related to restricted stock awards (in shares) | [1] | 100,000 |  |  |  |  |  |
Net Income (Loss) |  |  |  |  |  | (4,595) |  | (4,595)
Ending balance (ASU 2020-06) at Mar. 31, 2024 |  |  | $ (393) |  | $ 224 |  | $ (169) |
Ending balance at Mar. 31, 2024 |  | $ 73 |  | $ 415,633 |  | $ (385,920) |  | $ 29,786
Ending balance (in shares) at Mar. 31, 2024 | [1] | 73,052,124 |  |  |  |  |  |
[1] | Common stock, $0.001 par value; Authorized – as of March 31, 2024 and December 31, 2023 – 185,000,000 shares.

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