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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands | Common Stock | Paid-In Capital | Accumulated Deficit | Treasury Stock | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2019 | $ 3 | $ 319,758 | $ (302,439) | $ (258) | $ 17,064
Balance, shares at Dec. 31, 2019 | 3,339,541 |  |  |  |
Net Loss |  |  | (15,505) |  | (15,505)
Common stock issued, net of issuance costs | $ 7 | 13,523 |  |  | 13,530
Common stock issued, net of issuance costs (in shares) | 7,093,960 |  |  |  |
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes |  | 170 |  |  | 170
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares) | 511 |  |  |  |
Balance at Sep. 30, 2020 | $ 10 | 333,451 | (317,944) | (258) | 15,259
Balance, shares at Sep. 30, 2020 | 10,434,012 |  |  |  |
Balance at Jun. 30, 2020 | $ 7 | 326,073 | (308,193) | (258) | 17,629
Balance, shares at Jun. 30, 2020 | 6,664,976 |  |  |  |
Net Loss |  |  | (9,751) |  | (9,751)
Common stock issued, net of issuance costs | $ 3 | 7,236 |  |  | 7,239
Common stock issued, net of issuance costs (in shares) | 3,769,036 |  |  |  |
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes |  | 142 |  |  | 142
Balance at Sep. 30, 2020 | $ 10 | 333,451 | (317,944) | (258) | 15,259
Balance, shares at Sep. 30, 2020 | 10,434,012 |  |  |  |
Balance at Dec. 31, 2020 | $ 19 | 383,723 | (326,013) | (258) | 57,471
Balance, shares at Dec. 31, 2020 | 19,172,020 |  |  |  |
Net Loss |  |  | (13,438) |  | (13,438)
Common stock issued, net of issuance costs | $ 15 | 81,850 |  |  | 81,865
Common stock issued, net of issuance costs (in shares) | 15,407,018 |  |  |  |
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes |  | 594 |  |  | 594
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares) | 57,186 |  |  |  |
Minimum withholding taxes on net share settlements of equity awards |  | (150) |  |  | (150)
Balance at Sep. 30, 2021 | $ 34 | 466,017 | (339,451) | (258) | 126,342
Balance, shares at Sep. 30, 2021 | 34,636,224 |  |  |  |
Balance at Jun. 30, 2021 | $ 33 | 461,717 | (334,883) | (258) | 126,609
Balance, shares at Jun. 30, 2021 | 33,536,476 |  |  |  |
Net Loss |  |  | (4,568) |  | (4,568)
Common stock issued, net of issuance costs | $ 1 | 4,001 |  |  | 4,002
Common stock issued, net of issuance costs (in shares) | 1,099,748 |  |  |  |
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes |  | 299 |  |  | 299
Balance at Sep. 30, 2021 | $ 34 | $ 466,017 | $ (339,451) | $ (258) | $ 126,342
Balance, shares at Sep. 30, 2021 | 34,636,224 |  |  |  |

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