Shareholders' Equity and Capital Stock - o/s warrants (Details) - $ / shares |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Class of Warrant or Right | ||||
| Exercise price | $ 0.97 | $ 1.02 | $ 1.71 | $ 1.20 |
| Number of warrants | 5,844,567 | 5,844,567 | 8,224,112 | 8,374,112 |
| $1.35 [Member] | ||||
| Class of Warrant or Right | ||||
| Exercise price | $ 0.96 | |||
| Number of warrants | 4,294,167 | |||
| Remaining contractual life (years) | 6 months | |||
| Expiry | Jun. 24, 2018 | |||
| $0.91 [Member] | ||||
| Class of Warrant or Right | ||||
| Exercise price | $ 1.00 | |||
| Number of warrants | 1,550,400 | |||
| Remaining contractual life (years) | 8 months 12 days | |||
| Expiry | Aug. 27, 2018 | |||
| $0.95 [Member] | ||||
| Class of Warrant or Right | ||||
| Exercise price | $ 0.97 | |||
| Number of warrants | 5,844,567 | |||
| Remaining contractual life (years) | 6 months |
| X | ||||||||||
- Definition Weighted average remaining contractual term for warrants option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Expiration date of warrants issued. No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Number of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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