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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | November 2019 Offering | At-the-Market Program | March 2020 Offering | October 2020 Private Placement | Common Stock $0.001 par value | Common Stock $0.001 par value November 2019 Offering | Common Stock $0.001 par value At-the-Market Program | Common Stock $0.001 par value March 2020 Offering | Common Stock $0.001 par value October 2020 Private Placement | Additional Paid-In Capital | Additional Paid-In Capital November 2019 Offering | Additional Paid-In Capital At-the-Market Program | Additional Paid-In Capital March 2020 Offering | Additional Paid-In Capital October 2020 Private Placement | Accumulated Deficit | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2018 | $ 9,854 |  |  |  |  | $ 1 |  |  |  |  | $ 105,436 |  |  |  |  | $ (94,992) | $ (591)
Beginning Balance, Shares at Dec. 31, 2018 |  |  |  |  |  | 737,938 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  | $ 1,685 |  |  |  |  |  |  |  |  |  | $ 1,685 |  |  |  |  |
Proceeds from the issuance of common stock, Shares |  |  |  |  |  |  | 137,571 |  |  |  |  |  |  |  |  |  |
Share issuance costs |  | $ (553) |  |  |  |  |  |  |  |  |  | $ (553) |  |  |  |  |
Proceeds from exercise of stock options and warrants | 215 |  |  |  |  |  |  |  |  |  | 215 |  |  |  |  |  |
Proceeds from exercise of stock options and warrants, Shares |  |  |  |  |  | 2,136 |  |  |  |  |  |  |  |  |  |  |
Settlement of vested restricted stock units, net of taxes, Shares |  |  |  |  |  | 27 |  |  |  |  |  |  |  |  |  |  |
Reclassification of derivative financial instruments from exercise of warrants | 35 |  |  |  |  |  |  |  |  |  | 35 |  |  |  |  |  |
Stock-based compensation | 4,691 |  |  |  |  |  |  |  |  |  | 4,691 |  |  |  |  |  |
Foreign currency translation adjustments | (311) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (311)
Net loss | (9,781) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9,781) |
Ending Balance at Dec. 31, 2019 | 5,835 |  |  |  |  | $ 1 |  |  |  |  | 111,509 |  |  |  |  | (104,773) | (902)
Ending Balance, Shares at Dec. 31, 2019 |  |  |  |  |  | 877,672 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  |  | $ 5,043 | $ 1,348 | $ 2,791 |  |  |  |  |  |  |  | $ 5,043 | $ 1,348 | $ 2,791 |  |
Proceeds from the issuance of common stock, Shares |  |  |  |  |  |  |  | 232,526 | 178,776 | 187,646 |  |  |  |  |  |  |
Warrant issued |  |  |  | $ 842 | $ 629 |  |  |  |  |  |  |  |  | $ 842 | $ 629 |  |
Share issuance costs | (819) |  |  |  |  |  |  |  |  |  | (819) |  |  |  |  |  |
Settlement of vested restricted stock units, net of taxes, Shares |  |  |  |  |  | 7,792 |  |  |  |  |  |  |  |  |  |  |
Reverse stock split rounddown |  |  |  |  |  | (50) |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | 2,529 |  |  |  |  |  |  |  |  |  | 2,529 |  |  |  |  |  |
Foreign currency translation adjustments | (197) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (197)
Net loss | (14,130) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (14,130) |
Ending Balance at Dec. 31, 2020 | $ 3,871 |  |  |  |  | $ 1 |  |  |  |  | $ 123,872 |  |  |  |  | $ (118,903) | $ (1,099)
Ending Balance, Shares at Dec. 31, 2020 |  |  |  |  |  | 1,484,362 |  |  |  |  |  |  |  |  |  |  |

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