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SHARE CAPITAL (Details 2) Numberofunits in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 CAD ($) Numberofunits | Dec. 31, 2016 CAD ($) Numberofunits
Share capital [Line Items] |  |
Balance | Numberofunits | 14,855 | 16,998
Granted | Numberofunits | 1,957 | 2,676
Exercised | Numberofunits | (235) | (3,626)
Forfeited | Numberofunits | (985) | (1,014)
Expired | Numberofunits | (2,505) | (179)
Balance | Numberofunits | 13,087 | 14,855
Begining balance | $ | $ 5.84 | $ 5.76
Granted | $ | 3.88 | 4.42
Exercised | $ | 3.31 | 3.49
Forfeited | $ | 5.01 | 8.16
Expired | $ | 8.87 | 10.74
Ending balance | $ | $ 5.08 | $ 5.84

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- Definition The number of share options exercised in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2017-01-01 -Paragraph 45 -Subparagraph b -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2017-03-01&anchor=para_45_b_iv&doctype=Standard -URIDate 2017-03-09 + Details
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