Note 9 - Share Capital - Loss Per Share (Details) - shares shares in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Statement Line Items [Line Items] | |||
| Issued common shares, beginning of year (in shares) | 15,722 | 12,048 | 11,700 |
| Effect of ATM issuances (in shares) | 6,402 | 695 | |
| Effect of shares issued pursuant to share purchase agreement (in shares) | 113 | ||
| Effect of RSU redemptions (in shares) | 76 | ||
| Effect of warrant exercises (in shares) | 49 | ||
| Effect of option and DSU exercises (in shares) | 103 | ||
| Effect of promissory note conversions (in shares) | 54 | ||
| Balance, end of year (in shares) | 22,313 | 12,743 | 11,906 |
| X | ||||||||||
- Definition The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's ATM issuances. No definition available.
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| X | ||||||||||
- Definition The number of dilutive potential ordinary shares that relate to RSU redemption. No definition available.
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| X | ||||||||||
- Definition The number of dilutive potential ordinary shares that relate to purchase agreements. No definition available.
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| X | ||||||||||
- Definition The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's warrant exercises. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The weighted average number of shares outstanding at the beginning of the period. No definition available.
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| X | ||||||||||
- Definition The number of dilutive potential ordinary shares that relate to the assumed conversion of the entity's convertible instruments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The number of dilutive potential ordinary shares that relate to the assumed exercise of the entity's share options. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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