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v3.20.1

Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | AOCI Attributable to Parent [Member] | Total
--- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2017 |  | 22,987,434 |  |  |
Balance at Dec. 31, 2017 |  | $ 230 | $ 364,806 | $ (443,735) | $ (78,699)
Issuance of shares pursuant to ATM offerings (in shares) |  | 1,256,824 |  |  |
Issuance of shares pursuant to ATM offerings |  | $ 13 | 15,490 |  | 15,503
Issuance of shares pursuant to bond conversions (in shares) |  | 376,463 |  |  |
Issuance of shares pursuant to bond conversions |  | $ 4 | 2,752 |  | 2,756
Stock compensation expense (in shares) |  | 34,190 |  |  |
Stock compensation expense |  |  | 473 |  | 473
Net Loss |  |  |  | (26,273) | (26,273)
Balance (in shares) at Dec. 31, 2018 |  | 24,654,911 |  |  |
Balance at Dec. 31, 2018 |  | $ 247 | 383,521 | (470,008) | (86,240)
Issuance of shares pursuant to ATM offerings (in shares) |  | 1,863,072 |  |  |
Issuance of shares pursuant to ATM offerings |  | $ 19 | 19,376 |  | $ 19,395
Issuance of shares pursuant to bond conversions (in shares) |  | 1,918,444 |  |  | 1,918,444
Issuance of shares pursuant to bond conversions |  | $ 19 | 12,809 |  | $ 12,828
Stock compensation expense (in shares) |  | 44,140 |  |  |
Stock compensation expense |  |  | 562 |  | 562
Net Loss |  |  |  | (29,528) | (29,528)
Reclassification of warrant liability to Additional paid-in capital(1) | [1] |  | 2,896 | (2,031) | 865
Impact of warrant down-round feature |  |  | 30 | (30) |
Balance (in shares) at Dec. 31, 2019 |  | 28,480,567 |  |  |
Balance at Dec. 31, 2019 |  | $ 285 | $ 419,194 | $ (501,597) | $ (82,118)
[1] | A cumulative effect adjustment of $2,031 thousand was recognized as of January 1, 2019, upon adoption of ASU 2017-11.

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