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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | $ 14,264 | $ 13,475
SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 6,364 | 3,673
Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 1,486 | $ 532
2031 Expiration |  |
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | 0 |
2031 Expiration | SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 0 |
2031 Expiration | Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 45 |
2032 Expiration |  |
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | 13 |
2032 Expiration | SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 0 |
2032 Expiration | Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 117 |
2033 Expiration |  |
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | 11,235 |
2033 Expiration | SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 0 |
2033 Expiration | Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 232 |
2034 Expiration |  |
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | 825 |
2034 Expiration | SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 0 |
2034 Expiration | Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 197 |
2035 Expiration |  |
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | 2,191 |
2035 Expiration | SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 0 |
2035 Expiration | Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 895 |
Indefinite |  |
Tax Credit Carryforward [Line Items] |  |
Non-capital tax losses | 0 |
Indefinite | SR&ED Expenditures |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | 6,364 |
Indefinite | Investment Tax Credits |  |
Tax Credit Carryforward [Line Items] |  |
Tax credits | $ 0 |

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