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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL DEFICIENCY - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Beginning balance | $ (30,881) | $ (59,855) | $ (70,322) | $ (52,881)
Share-based compensation | 267 | 113 | 698 | 403
Issuance of common stock and warrants, net of issuance cost |  |  | 41,343 |
Note receivable from issuance of common stock and warrants |  |  | (4,000) |
Net loss for the period | (4,150) | (7,743) | (2,483) | (15,007)
Ending balance | (34,764) | (67,485) | (34,764) | (67,485)
Common Stock [Member] |  |  |  |
Beginning balance | $ 33 | $ 15 | $ 15 | $ 15
Beginning balance (in shares) | 32,442,636 | 14,838,213 | 14,838,213 | 14,838,213
Issuance of common stock and warrants, net of issuance cost |  |  | $ 18 |
Issuance of common stock and warrants, net of issuance cost (in shares) |  |  | 17,604,423 |
Ending balance | $ 33 | $ 15 | $ 33 | $ 15
Ending balance (in shares) | 32,442,636 | 14,838,213 | 32,442,636 | 14,838,213
Additional Paid-in Capital [Member] |  |  |  |
Beginning balance | $ 308,248 | $ 269,947 | $ 270,492 | $ 269,657
Share-based compensation | 267 | 113 | 698 | 403
Issuance of common stock and warrants, net of issuance cost |  |  | 41,325 |
Note receivable from issuance of common stock and warrants |  |  | (4,000) |
Ending balance | 308,515 | 270,060 | 308,515 | 270,060
Accumulated Deficit [Member] |  |  |  |
Beginning balance | (339,162) | (329,817) | (340,829) | (322,553)
Net loss for the period | (4,150) | (7,743) | (2,483) | (15,007)
Ending balance | $ (343,312) | $ (337,560) | $ (343,312) | $ (337,560)

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