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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Intangible assets were as follows:
|  | Estimated weighted average useful life in years |  |  | 2017 |  |  | 2016 |
Cost |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles [note 6] |  |  | 10 |  |  | $ | 438 |  |  | $ | 392 |
Computer software |  |  | 3 |  |  |  | 348 |  |  |  | 316 |
Patent and licenses |  |  | 13 |  |  |  | 342 |  |  |  | 278 |
|  |  |  |  |  |  | 1,128 |  |  |  | 986 |
Accumulated depreciation |  |  |  |  |  |  |  |  |  |  |  |
Customer relationship intangibles [note 6] |  |  |  |  |  |  | (162 | ) |  |  | (96 | )
Computer software |  |  |  |  |  |  | (263 | ) |  |  | (242 | )
Patent and licenses |  |  |  |  |  |  | (53 | ) |  |  | (27 | )
|  |  |  |  |  | $ | 650 |  |  | $ | 621 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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