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Other long term obligations (Tables) | 12 Months Ended
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Dec. 31, 2014
Other Liabilities Disclosure [Abstract] |
Schedule of other long term obligations | Other long term obligations are as follows:
|  | December 31, 2014 |  |  | December 31, 2013 |
Deferred lease inducements liability (note 16(b)) |  | 252 |  |  | 359 |
Asset retirement obligation (note 16(c)) |  | 562 |  |  | 512 |
Senior executive stock option plan (note 23(c)) |  | 22 |  |  | 940 |
Restricted share unit plan (note 23(d)) |  | 1,779 |  |  | 3,667 |
Directors' deferred stock unit plan (note 23(e)) |  | 2,005 |  |  | 3,662 |
Deferred gain on sale leaseback (note 16(d)) |  | 371 |  |  | — |
|  | $ | 4,991 |  |  | $ | 9,140 |
Less current portion of: |  |  |  |
Senior executive stock option plan (note 23(c)) |  | (22 | ) |  | — |
Restricted share unit plan (note 23(d)) |  | (1,009 | ) |  | (1,933 | )
Directors' deferred share unit plan (note 23(f)) |  | (408 | ) |  | — |
Deferred gain on sale leaseback (note 16(d)) |  | (93 | ) |  | — |
|  | $ | 3,459 |  |  | $ | 7,207 |
Schedule of changes in deferred lease inducements |
|  | December 31, 2014 |  |  | December 31, 2013 |
Balance, beginning of year |  | $ | 359 |  |  | $ | 466 |
Amortization of deferred lease inducements |  | (107 | ) |  | (107 | )
Balance, end of year |  | $ | 252 |  |  | $ | 359 |
Schedule of changes in asset retirement obligation | The following table presents a continuity of the liability for the asset retirement obligation:
|  | December 31, 2014 |  |  | December 31, 2013 |
Balance, beginning of year |  | $ | 512 |  |  | $ | 466 |
Accretion expense |  | 50 |  |  | 46 |
Balance, end of year |  | $ | 562 |  |  | $ | 512 |
Schedule of deferred lease inducement assets | The Company recorded a gain on the sale leaseback of certain heavy equipment. The gain on sale has been deferred and is being amortized over the term of the capital lease.
|  | December 31, 2014 |  |  | December 31, 2013 |
Balance, beginning of year |  | $ | — |  |  | $ | — |
Addition |  | 371 |  |  | — |
Balance, end of year |  | $ | 371 |  |  | $ | — |

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- Definition Schedule of Other Liabilities [Table Text Block] + References No definition available. + Details
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- Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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- Definition Tabular disclosure of leases entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller was accounted for as an operating or capital lease. If the sale of the asset(s) did not meet the requirements to be accounted for as a sale whether the transaction was accounted for using the deposit method or as a financing. Disclosure may also include a description of the terms of the sale-leaseback transaction, including future commitments, obligations, provisions, or circumstances that require or result in the seller-lessee's continuing involvement. For leasing transactions involving "Special Purpose Entities"', disclosure may include a general description of the significant terms of the leasing arrangement including renewal or purchase options, escalation clauses, obligations with respect to refinancing of the lessor's debt, significant penalties and the provisions of any significant guarantees, such as residual value guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6452660&loc=d3e36991-112694 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6456341&loc=d3e50796-112755 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6456377&loc=d3e50824-112756 + Details
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