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Income Taxes (Operating Loss Carryforward Expirations) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Operating loss carryforwards | $ (67,822) |  |
Total | 67,822 |  |
Equity component for share-issuance cost deduction | (382) | $ 32 | $ 41
Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (43,399) |  |
Capital loss carryforwards | 55,367 |  |
Equity component for share-issuance cost deduction | 370 |  |
U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (18,455) |  |
Mexico [Member] |  |  |
Expiring net operating loss carryforwards | (5,813) |  |
Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (155) |  |
Australia [Member] |  |  |
Operating loss carryforwards | (25,909) |  |
Tax Year 2016 [Member] |  |  |
Total | 2 |  |
Tax Year 2016 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (2) |  |
Tax Year 2017 [Member] |  |  |
Total | 1 |  |
Tax Year 2017 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (1) |  |
Tax Year 2018 [Member] |  |  |
Total | 6 |  |
Tax Year 2018 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (6) |  |
Tax Year 2019 [Member] |  |  |
Total | 20 |  |
Tax Year 2019 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (20) |  |
Tax Year 2020[Member] |  |  |
Total | 42 |  |
Tax Year 2020[Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (42) |  |
Tax Year 2021 [Member] |  |  |
Total | 20 |  |
Tax Year 2021 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (20) |  |
Tax Year 2022 [Member] |  |  |
Total | 5,542 |  |
Tax Year 2022 [Member] | Mexico [Member] |  |  |
Expiring net operating loss carryforwards | (5,511) |  |
Tax Year 2022 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (31) |  |
Tax Year 2023 [Member] |  |  |
Total | 325 |  |
Tax Year 2023 [Member] | Mexico [Member] |  |  |
Expiring net operating loss carryforwards | (302) |  |
Tax Year 2023 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (23) |  |
Tax Year 2024 [Member] |  |  |
Total | 4 |  |
Tax Year 2024 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (4) |  |
Tax Year 2025 [Member] |  |  |
Total | 6 |  |
Tax Year 2025 [Member] | Barbados [Member] |  |  |
Expiring net operating loss carryforwards | (6) |  |
Tax Year 2026 [Member] |  |  |
Total | 1,027 |  |
Tax Year 2026 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (1,027) |  |
Tax Year 2027 [Member] |  |  |
Total | 2,134 |  |
Tax Year 2027 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (847) |  |
Tax Year 2027 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (1,287) |  |
Tax Year 2028 [Member] |  |  |
Total | 6,964 |  |
Tax Year 2028 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (5,245) |  |
Tax Year 2028 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (1,719) |  |
Tax Year 2029 [Member] |  |  |
Total | 5,992 |  |
Tax Year 2029 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (4,022) |  |
Tax Year 2029 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (1,970) |  |
Tax Year 2030 [Member] |  |  |
Total | 6,859 |  |
Tax Year 2030 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (5,032) |  |
Tax Year 2030 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (1,827) |  |
Tax Year 2031 [Member] |  |  |
Total | 7,213 |  |
Tax Year 2031 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (3,806) |  |
Tax Year 2031 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (3,407) |  |
Tax Year 2032 [Member] |  |  |
Total | 8,720 |  |
Tax Year 2032 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (6,397) |  |
Tax Year 2032 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (2,323) |  |
Tax Year 2033 [Member] |  |  |
Total | 9,174 |  |
Tax Year 2033 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (6,076) |  |
Tax Year 2033 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (3,098) |  |
Tax Year 2034 [Member] |  |  |
Total | 7,244 |  |
Tax Year 2034 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (4,420) |  |
Tax Year 2034 [Member] | U.S. [Member] |  |  |
Expiring net operating loss carryforwards | (2,824) |  |
Tax year 2035 [Member] |  |  |
Total | 3,729 |  |
Tax year 2035 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | (3,729) |  |
Tax Year 2036 [Member] |  |  |
Total | 2,798 |  |
Tax Year 2036 [Member] | Canada [Member] |  |  |
Expiring noncapital loss carryforwards | $ (2,798) |  |

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