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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Series D and E Preferred Stock | Preferred Stock Series A-2 Preferred Stock | Preferred Stock Series C Preferred Stock | Preferred Stock Series D Preferred Stock | Preferred Stock Series E Preferred Stock | Common Stock | Common Stock Series A-2 Preferred Stock | Common Stock Series D and E Preferred Stock | Treasury Stock | Additional Paid-In Capital | Additional Paid-In Capital Series D and E Preferred Stock | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2019 |  |  | 32 | 475 | 1,734,901 | 131,579 | 5,266,828 |  |  | 105,285 |  |  |
Beginning Balance at Dec. 31, 2019 | $ 21,785 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (165) | $ 207,383 |  | $ (185,434)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (3,129) |  |  |  |  |  |  |  |  |  |  |  | (3,129)
Stock-based compensation | 32 |  |  |  |  |  |  |  |  |  | 32 |  |
Preferred stock conversion (in shares) |  |  |  | (150) |  |  | 50,000 |  |  |  |  |  |
Issuance of preferred stock for accrued dividends (in shares) |  |  | 13 |  |  |  |  |  |  |  |  |  |
Issuance of preferred stock for accrued dividends | 98 |  |  |  |  |  |  |  |  |  | 98 |  |
Forfeited restricted stock (in shares) |  |  |  |  | (14,441) |  |  |  |  |  |  |  |
Preferred stock dividends | (4) |  |  |  |  |  |  |  |  |  | (4) |  |
Purchase of treasury stock | (7) |  |  |  |  |  |  |  |  | $ (7) |  |  |
Ending Balance (in shares) at Mar. 31, 2020 |  |  | 45 | 325 | 1,720,460 | 131,579 | 5,316,828 |  |  | 105,285 |  |  |
Ending Balance at Mar. 31, 2020 | 18,775 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (172) | 207,509 |  | (188,563)
Beginning Balance (in shares) at Dec. 31, 2019 |  |  | 32 | 475 | 1,734,901 | 131,579 | 5,266,828 |  |  | 105,285 |  |  |
Beginning Balance at Dec. 31, 2019 | 21,785 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (165) | 207,383 |  | (185,434)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (6,514) |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock conversion (in shares) |  |  |  |  |  |  | 50,000 |  |  |  |  |  |
Ending Balance (in shares) at Jun. 30, 2020 |  |  | 45 | 325 | 1,703,096 | 131,579 | 5,340,162 |  |  | 113,283 |  |  |
Ending Balance at Jun. 30, 2020 | 15,407 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (181) | 207,535 |  | (191,948)
Beginning Balance (in shares) at Dec. 31, 2019 |  |  | 32 | 475 | 1,734,901 | 131,579 | 5,266,828 |  |  | 105,285 |  |  |
Beginning Balance at Dec. 31, 2019 | 21,785 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (165) | 207,383 |  | (185,434)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |  |  | $ (16) |  |  |
Series D Preferred Stock exchanged for taxes (in shares) |  |  |  |  |  |  |  |  |  | (8,000) |  |  |
Ending Balance (in shares) at Dec. 31, 2020 |  |  | 45 |  | 1,697,958 | 131,579 | 7,861,912 |  |  | 113,283 |  |  |
Ending Balance at Dec. 31, 2020 | 22,057 |  | $ 0 |  | $ 0 | $ 0 | $ 1 |  |  | $ (181) | 215,092 |  | (192,855)
Beginning Balance (in shares) at Mar. 31, 2020 |  |  | 45 | 325 | 1,720,460 | 131,579 | 5,316,828 |  |  | 105,285 |  |  |
Beginning Balance at Mar. 31, 2020 | 18,775 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (172) | 207,509 |  | (188,563)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (3,385) |  |  |  |  |  |  |  |  |  |  |  | (3,385)
Stock-based compensation | 29 |  |  |  |  |  |  |  |  |  | 29 |  |
Issuance of preferred stock for accrued dividends | 1 |  |  |  |  |  |  |  |  |  | 1 |  |
Forfeited restricted stock (in shares) |  |  |  |  | (17,364) |  |  |  |  |  |  |  |
Issuance of restricted stock (in shares) |  |  |  |  |  |  | 23,334 |  |  |  |  |  |
Preferred stock dividends | (4) |  |  |  |  |  |  |  |  |  | (4) |  |
Purchase of treasury stock (in shares) |  |  |  |  |  |  |  |  |  | 7,998 |  |  |
Purchase of treasury stock | (9) |  |  |  |  |  |  |  |  | $ (9) |  |  |
Ending Balance (in shares) at Jun. 30, 2020 |  |  | 45 | 325 | 1,703,096 | 131,579 | 5,340,162 |  |  | 113,283 |  |  |
Ending Balance at Jun. 30, 2020 | 15,407 |  | $ 0 | $ 0 | $ 0 | $ 0 | $ 1 |  |  | $ (181) | 207,535 |  | (191,948)
Beginning Balance (in shares) at Dec. 31, 2020 |  |  | 45 |  | 1,697,958 | 131,579 | 7,861,912 |  |  | 113,283 |  |  |
Beginning Balance at Dec. 31, 2020 | 22,057 |  | $ 0 |  | $ 0 | $ 0 | $ 1 |  |  | $ (181) | 215,092 |  | (192,855)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (3,433) |  |  |  |  |  |  |  |  |  |  |  | (3,433)
Stock-based compensation | 33 |  |  |  |  |  |  |  |  |  | 33 |  |
Preferred stock conversion (in shares) |  |  | (45) |  | (1,697,022) | (131,579) |  | 84,292 | 18,762,119 |  |  |  |
Preferred stock conversion |  | $ 0 |  |  |  |  |  |  | $ 2 |  |  | $ (2) |
Issuance of stock for services (in shares) |  |  |  |  |  |  | 21,008 |  |  |  |  |  |
Issuance of stock for services | 274 |  |  |  |  |  |  |  |  |  | 274 |  |
Forfeited restricted stock (in shares) |  |  |  |  | (81) |  |  |  |  |  |  |  |
Series D Preferred Stock exchanged for taxes (in shares) |  |  |  |  | (855) |  |  |  |  |  |  |  |
Ending Balance (in shares) at Mar. 31, 2021 |  |  | 0 |  | 0 | 0 | 26,729,331 |  |  | 113,283 |  |  |
Ending Balance at Mar. 31, 2021 | 18,931 |  | $ 0 |  | $ 0 | $ 0 | $ 3 |  |  | $ (181) | 215,397 |  | (196,288)
Beginning Balance (in shares) at Dec. 31, 2020 |  |  | 45 |  | 1,697,958 | 131,579 | 7,861,912 |  |  | 113,283 |  |  |
Beginning Balance at Dec. 31, 2020 | 22,057 |  | $ 0 |  | $ 0 | $ 0 | $ 1 |  |  | $ (181) | 215,092 |  | (192,855)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (5,679) |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock conversion (in shares) |  |  |  |  |  |  | 18,846,411 |  |  |  |  |  |
Ending Balance (in shares) at Jun. 30, 2021 |  |  | 0 |  | 0 | 0 | 30,729,331 |  |  | 113,283 |  |  |
Ending Balance at Jun. 30, 2021 | 28,305 |  | $ 0 |  | $ 0 | $ 0 | $ 3 |  |  | $ (181) | 227,017 |  | (198,534)
Beginning Balance (in shares) at Mar. 31, 2021 |  |  | 0 |  | 0 | 0 | 26,729,331 |  |  | 113,283 |  |  |
Beginning Balance at Mar. 31, 2021 | 18,931 |  | $ 0 |  | $ 0 | $ 0 | $ 3 |  |  | $ (181) | 215,397 |  | (196,288)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (2,246) |  |  |  |  |  |  |  |  |  |  |  | (2,246)
Issuance of stock from financing, net of issuance costs (in shares) |  |  |  |  |  |  | 4,000,000 |  |  |  |  |  |
Issuance of stock from financing, net of issuance costs | 11,504 |  |  |  |  |  |  |  |  |  | 11,504 |  |
Issuance of stock for services | 116 |  |  |  |  |  |  |  |  |  | 116 |  |
Ending Balance (in shares) at Jun. 30, 2021 |  |  | 0 |  | 0 | 0 | 30,729,331 |  |  | 113,283 |  |  |
Ending Balance at Jun. 30, 2021 | $ 28,305 |  | $ 0 |  | $ 0 | $ 0 | $ 3 |  |  | $ (181) | $ 227,017 |  | $ (198,534)

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