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Accumulated Other Comprehensive Loss (Tables) | 6 Months Ended
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Jun. 30, 2017
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Loss | As at June 30, 2017 and December 31, 2016, the Company’s accumulated other comprehensive loss consisted of the following components:
| June 30, |  | December 31,
| 2017 |  | 2016
| $ |  | $
Unrealized loss on qualifying cash flow hedging instruments | (493 | ) |  | (41 | )
Pension adjustments, net of tax recoveries | (12,272 | ) |  | (12,160 | )
Unrealized gain (loss) on marketable securities | 284 |  |  | (416 | )
Foreign exchange gain on currency translation | 2,426 |  |  | 2,014 |
| (10,055 | ) |  | (10,603 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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