Condensed Consolidated Interim Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands |
The 2018 ATM Offering [Member]
Common Stock [Member]
|
The 2018 ATM Offering [Member] |
The 2017 Purchase Agreement [Member]
Common Stock [Member]
|
The 2017 Purchase Agreement [Member] |
The 2018 Purchase Agreement [Member]
Common Stock [Member]
|
The 2018 Purchase Agreement [Member] |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
AOCI Attributable to Parent [Member] |
Retained Earnings [Member] |
Total |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance (in shares) at Dec. 31, 2016 | 15,722,000 | ||||||||||
| Balance at Dec. 31, 2016 | $ 218,034 | $ 28,719 | $ (4,298) | $ (235,127) | $ 7,328 | ||||||
| Common shares issued (in shares) | 7,473,000 | ||||||||||
| Common shares issued | $ 8,204 | 8,204 | |||||||||
| Stock-based compensation | 510 | 510 | |||||||||
| Net loss | (5,733) | (5,733) | |||||||||
| Shares issued on redemption of restricted share units (in shares) | 150,000 | ||||||||||
| Shares issued on redemption of restricted share units | $ 171 | (171) | |||||||||
| Balance (in shares) at Jun. 30, 2017 | 23,345,000 | ||||||||||
| Balance at Jun. 30, 2017 | $ 226,409 | 29,058 | (4,298) | (240,860) | 10,309 | ||||||
| Balance (in shares) at Dec. 31, 2016 | 15,722,000 | ||||||||||
| Balance at Dec. 31, 2016 | $ 218,034 | 28,719 | (4,298) | (235,127) | 7,328 | ||||||
| Common shares issued (in shares) | 357,143 | ||||||||||
| Balance (in shares) at Dec. 31, 2017 | 27,502,000 | ||||||||||
| Balance at Dec. 31, 2017 | $ 231,923 | 29,365 | (4,316) | (246,770) | $ 10,202 | ||||||
| Common shares issued (in shares) | 1,430,000 | 1,429,847 | 5,232,000 | 5,231,953 | 170,000 | 170,261 | |||||
| Common shares issued | $ 5,246 | $ 5,246 | $ 14,995 | $ 14,995 | $ 600 | $ 600 | |||||
| Common shares issued upon exercise of stock options (in shares) | 77,000 | 77,000 | |||||||||
| Common shares issued upon exercise of stock options | $ 317 | (134) | $ 183 | ||||||||
| Stock-based compensation | 2,743 | 2,743 | |||||||||
| Other comprehensive loss | (6) | (6) | |||||||||
| Net loss | (17,076) | (17,076) | |||||||||
| Balance (in shares) at Jun. 30, 2018 | 34,411,000 | ||||||||||
| Balance at Jun. 30, 2018 | $ 253,081 | $ 31,974 | $ (4,332) | $ (263,846) | $ 16,887 |
| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of shares issued which are neither cancelled nor held in the treasury. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Value of stock issued as a result of the exercise of stock options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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