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v3.20.1

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands | Total | Preferred Stock | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Loss | Accumulated Deficit
--- | --- | --- | --- | --- | --- | ---
Balance at the beginning of the period (in shares) at Dec. 31, 2018 |  |  | 12,091 |  |  |
Balance at the beginning of the period at Dec. 31, 2018 | $ 11,052 |  | $ 1 | $ 128,367 | $ (1) | $ (117,315)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans |  |  | 150 |  |  |
Issuance of common stock under employee stock option and stock purchase plans | 0 |  |  |  |  |
Common stock withheld in lieu of income tax withholding on vesting of restricted stock units (in shares) |  |  | (50) |  |  |
Common stock withheld in lieu of income tax withholding on vesting of restricted stock units | (111) |  |  | (111) |  |
Stock-based compensation | 543 |  |  | 543 |  |
Net loss from continuing operations | (2,865) |  |  |  |  | (2,865)
Balance at the end of the period (in shares) at Mar. 31, 2019 |  |  | 12,191 |  |  |
Balance at the end of the period at Mar. 31, 2019 | 8,433 |  | $ 1 | 128,799 | (1) | (120,366)
Balance at the beginning of the period (in shares) at Dec. 31, 2019 |  | 0 | 12,428 |  |  |
Balance at the beginning of the period at Dec. 31, 2019 | 3,996 | $ 0 | $ 1 | 128,872 | (3) | (124,874)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans |  |  | 27 |  |  |
Issuance of common stock under employee stock option and stock purchase plans | 0 |  |  |  |  |
Issuance of common stock and warrants (in shares) |  |  | 3,442 |  |  |
Issuance of common stock and warrants | 2,750 |  | $ 1 | 2,749 |  |
Offering costs on issuance of common stock and warrants | (474) |  |  | (474) |  |
Warrant liability | (1,636) |  |  | (1,636) |  |
Conversion of notes to preferred stock | 1,769 |  |  | 1,769 |  |
Conversion of notes to preferred stock |  | 2,709 |  |  |  |
Stock-based compensation | 20 |  |  | 20 |  |
Net loss from continuing operations | (541) |  |  |  |  | (541)
Balance at the end of the period (in shares) at Mar. 31, 2020 |  | 2,709 | 15,897 |  |  |
Balance at the end of the period at Mar. 31, 2020 | $ 5,884 | $ 0 | $ 2 | $ 131,300 | $ (3) | $ (125,415)

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