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Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Balance at Dec. 31, 2017 [1] $ 118 $ 134,632 $ (126,088) $ 8,662
Balance, shares at Dec. 31, 2017 [1] 11,802,768      
Issuance of shares in at-the-market transactions, net of fees $ 9 1,141 $ 1,150
Issuance of shares in at-the-market transactions, net of fees, shares 930,857     930,857
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 324,866      
Amortization of stock option awards 26 26
Net loss (1,417) (1,417)
Balance at Jun. 30, 2018 [1] $ 130 136,175 (127,505) 8,800
Balance, shares at Jun. 30, 2018 [1] 13,058,491      
Balance at Dec. 31, 2018 $ 134 136,714 (127,129) 9,719
Balance, shares at Dec. 31, 2018 13,405,838      
Amortization of stock option awards 26 26
Net loss 35 35
Balance at Jun. 30, 2019 $ 134 $ 136,740 $ (127,094) $ 9,780
Balance, shares at Jun. 30, 2019 13,405,838      
[1] Shareholder's equity at December 31, 2017 and June 30, 2018 have been restated to reflect the reclassification of the Company's Series A preferred stock to temporary equity. In addition, $903 thousand at December 31, 2017 related to the change in the fair value of marketable equity securities was reclassified from accumulated other comprehensive loss to accumulated deficit as a result of the adoption of Accounting Standards Update 2016-01.