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Capital Stock (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 12 Months Ended | 132 Months Ended
--- | --- | --- | ---
Dec. 31, 2012 | Aug. 31, 2012 | Jul. 31, 2012 item | Apr. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012
Proceeds from issuance of common shares | $ 11,500 | $ 265 |  | $ 1,100 | $ 733 |  | $ 733 |  | $ 733
Common shares issued (in shares) |  | 115,217 |  | 478,261 | 225,000 |  |  |  |
Warrants issued (Note 9) (in shares) | 4,757,941 |  |  |  |  |  | 4,757,941 |  | 4,757,941
Exercises of compensation options (in shares) |  |  |  |  | 225,000 |  | 225,000 |  |
Private placement number of units sold |  |  | 5,000,000 |  |  |  |  |  |
Private placement proceeds from sale of units gross |  |  | 15,000 |  |  |  |  |  |
Private placement, number of common share in each unit |  |  | 1 |  |  |  |  |  |
Private placement, number of common share purchase warrant in each unit |  |  | 0.5 |  |  |  |  |  |
Private placement, warrant exercisable period |  |  | 24 months |  |  |  |  |  |
Public Offering, number of units sold | 4,182,550 |  |  |  |  |  |  |  |
Over-allotment option units issued | 545,550 |  |  |  |  |  |  |  |
Public Offering, number of common shares in each unit | 1 |  |  |  |  |  |  |  |
Public Offering, number of common share purchase warrants in each unit | 0.5 |  |  |  |  |  |  |  |
Public Offering, warrant exercisable period | 24 months |  |  |  |  |  |  |  |
Compensation Options Issued to Underwriters |  |  | 166,667 |  |  |  |  | 450,000 |
Number of shares placed by brokers |  |  | 3,333,334 |  |  |  |  |  |
Equity issuance commissions and other costs | $ 1,258 |  | $ 770 |  |  |  |  |  |
Compensation options exercised, shares |  |  |  |  |  | 450,000 | 32,500 |  |
Warrants [Member] |  |  |  |  |  |  |  |  |
Private placement, warrant exercisable period |  |  | 24 months |  |  |  |  |  |
Private placement price per common share |  |  | $ 3.60 |  |  |  |  |  |
Public Offering, price per common share | 3.30 |  |  |  |  |  |  |  |
Compensation Warrants [Member] |  |  |  |  |  |  |  |  |
Private placement, number of common share in each unit |  |  | 1 |  |  |  |  |  |
Private placement price per common share |  |  | $ 3.18 |  |  |  |  |  |

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