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Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member] | Accumulated Other Comprehensive Loss [Member] | Total
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2016 | $ 61 | $ 125,577 | $ (123,825) | $ (55) | $ 1,758
Balance, shares at Dec. 31, 2016 | 6,134,506 |  |  |  |
Placement fees recorded in equity |  | (114) |  |  | (114)
Revised 2016 option grants | $ (1) | 196 |  |  | $ 195
Revised 2016 option grants, shares | (151,008) |  |  |  | 170,000
Shares issued in Exchange Transaction | $ 58 | 8,845 |  |  | $ 8,903
Shares issued in Exchange Transaction, shares | 5,819,270 |  |  |  |
Stock-based compensation |  | 128 |  |  | 128
Unrealized loss on marketable equity securities |  |  |  | (848) | (848)
Net loss |  |  | (1,361) |  | (1,361)
Balance at Dec. 31, 2017 | $ 118 | 134,632 | (125,186) | (903) | $ 8,661
Balance, shares at Dec. 31, 2017 | 11,802,768 |  |  |  |
Revised 2016 option grants, shares |  |  |  |  |
Accumulated other comprehensive loss related to marketable securities |  |  | (903) | 903 |
Issuance of shares in at-the-market transactions, net of fees | $ 13 | 1,653 |  |  | $ 1,666
Issuance of shares in at-the-market transactions, net of fees, shares | 1,288,537 |  |  |  | 1,288,537
Issuance of shares to employees, net of shares withheld for taxes | $ 3 | 376 |  |  | $ 379
Issuance of shares to employees, net of shares withheld for taxes, shares | 314,533 |  |  |  |
Amortization of stock option awards |  | 53 |  |  | 53
Net loss |  |  | (1,040) |  | (1,040)
Balance at Dec. 31, 2018 | $ 134 | $ 136,714 | $ (127,129) |  | $ 9,719
Balance, shares at Dec. 31, 2018 | 13,405,838 |  |  |  |

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