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Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | LPC Purchase Agreement | At-the-Market Program | March 2020 Offering | February 2021 Offering | Common Stock $0.001 par value | Common Stock $0.001 par value LPC Purchase Agreement | 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 February 2021 Offering | Additional Paid-In Capital | Additional Paid-In Capital LPC Purchase Agreement | Additional Paid-In Capital At-the-Market Program | Additional Paid-In Capital March 2020 Offering | Additional Paid-In Capital February 2021 Offering | Accumulated Other Comprehensive Loss | Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2019 | $ 5,835 |  |  |  |  | $ 1 |  |  |  |  | $ 111,509 |  |  |  |  | $ (902) | $ (104,773)
Beginning Balance, Shares at Dec. 31, 2019 |  |  |  |  |  | 877,672 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  |  | $ 5,043 | $ 1,348 |  |  |  |  |  |  |  |  | $ 5,043 | $ 1,348 |  |  |
Proceeds from the issuance of common stock, Shares |  |  |  |  |  |  |  | 232,526 | 178,776 |  |  |  |  |  |  |  |
Warrant issued |  |  |  | $ 842 |  |  |  |  |  |  |  |  |  | $ 842 |  |  |
Share issuance costs | (506) |  |  |  |  |  |  |  |  |  | (506) |  |  |  |  |  |
Settlement of restricted stock units, Shares |  |  |  |  |  | 6,831 |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | 2,021 |  |  |  |  |  |  |  |  |  | 2,021 |  |  |  |  |  |
Foreign currency translation adjustments | 209 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 209 |
Net loss | (11,595) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (11,595)
Ending Balance at Sep. 30, 2020 | 3,197 |  |  |  |  | $ 1 |  |  |  |  | 120,257 |  |  |  |  | (693) | (116,368)
Ending Balance, Shares at Sep. 30, 2020 |  |  |  |  |  | 1,295,805 |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Jun. 30, 2020 | 6,396 |  |  |  |  | $ 1 |  |  |  |  | 119,807 |  |  |  |  | (521) | (112,891)
Beginning Balance, Shares at Jun. 30, 2020 |  |  |  |  |  | 1,288,974 |  |  |  |  |  |  |  |  |  |  |
Settlement of restricted stock units, Shares |  |  |  |  |  | 6,831 |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | 450 |  |  |  |  |  |  |  |  |  | 450 |  |  |  |  |  |
Foreign currency translation adjustments | (172) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (172) |
Net loss | (3,477) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,477)
Ending Balance at Sep. 30, 2020 | 3,197 |  |  |  |  | $ 1 |  |  |  |  | 120,257 |  |  |  |  | (693) | (116,368)
Ending Balance, Shares at Sep. 30, 2020 |  |  |  |  |  | 1,295,805 |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2020 | 3,871 |  |  |  |  | $ 1 |  |  |  |  | 123,872 |  |  |  |  | (1,099) | (118,903)
Beginning Balance, Shares at Dec. 31, 2020 |  |  |  |  |  | 1,484,362 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  | $ 577 |  |  | $ 8,399 |  |  |  |  | $ 1 |  | $ 577 |  |  | $ 8,398 |  |
Proceeds from the issuance of common stock, Shares |  |  |  |  |  |  | 40,000 |  |  | 744,936 |  |  |  |  |  |  |
Warrant issued |  |  |  |  | $ 2,638 |  |  |  |  |  |  |  |  |  | $ 2,638 |  |
Share issuance costs | (1,608) |  |  |  |  |  |  |  |  |  | (1,608) |  |  |  |  |  |
Share issuance costs, Shares |  |  |  |  |  | 31,958 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the exercise of warrants | 1,318 |  |  |  |  |  |  |  |  |  | 1,318 |  |  |  |  |  |
Proceeds from the exercise of warrants, Shares |  |  |  |  |  | 81,895 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the exercise of stock options | $ 2 |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Proceeds from the exercise of stock options, Shares | 214 |  |  |  |  | 214 |  |  |  |  |  |  |  |  |  |  |
Settlement of restricted stock units, Shares |  |  |  |  |  | 3,428 |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | $ 3,896 |  |  |  |  |  |  |  |  |  | 3,896 |  |  |  |  |  |
Stock-based compensation, Shares |  |  |  |  |  | 5,337 |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustments | (26) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (26) |
Net loss | (14,030) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (14,030)
Ending Balance at Sep. 30, 2021 | 5,037 |  |  |  |  | $ 2 |  |  |  |  | 139,093 |  |  |  |  | (1,125) | (132,933)
Ending Balance, Shares at Sep. 30, 2021 |  |  |  |  |  | 2,392,130 |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Jun. 30, 2021 | 8,367 |  |  |  |  | $ 2 |  |  |  |  | 138,023 |  |  |  |  | (1,412) | (128,246)
Beginning Balance, Shares at Jun. 30, 2021 |  |  |  |  |  | 2,317,772 |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of common stock |  | $ 577 |  |  |  |  |  |  |  |  |  | $ 577 |  |  |  |  |
Proceeds from the issuance of common stock, Shares |  |  |  |  |  |  | 40,000 |  |  |  |  |  |  |  |  |  |
Share issuance costs | (247) |  |  |  |  |  |  |  |  |  | (247) |  |  |  |  |  |
Share issuance costs, Shares |  |  |  |  |  | 31,958 |  |  |  |  |  |  |  |  |  |  |
Settlement of restricted stock units, Shares |  |  |  |  |  | 2,400 |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | 740 |  |  |  |  |  |  |  |  |  | 740 |  |  |  |  |  |
Foreign currency translation adjustments | 287 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 287 |
Net loss | (4,687) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4,687)
Ending Balance at Sep. 30, 2021 | $ 5,037 |  |  |  |  | $ 2 |  |  |  |  | $ 139,093 |  |  |  |  | $ (1,125) | $ (132,933)
Ending Balance, Shares at Sep. 30, 2021 |  |  |  |  |  | 2,392,130 |  |  |  |  |  |  |  |  |  |  |

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