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Interest expense (Details) - CAD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Schedule of Interest Expense [Line Items] |  |
Amortization of deferred financing costs | $ 539,000 | $ 797,000
Interest on long term debt | 8,759,000 | 7,087,000
Other interest income | (175,000) | (144,000)
Total interest expense, net | 8,584,000 | 6,943,000
Interest capitalized | 634,000 | 0
Capital lease obligations |  |
Schedule of Interest Expense [Line Items] |  |
Interest on long term debt | 2,984,000 | 3,023,000
Credit Facility |  |
Schedule of Interest Expense [Line Items] |  |
Interest on long term debt | 2,729,000 | 1,507,000
Convertible debentures |  |
Schedule of Interest Expense [Line Items] |  |
Interest on long term debt | 2,200,000 | 1,760,000
Promissory notes |  |
Schedule of Interest Expense [Line Items] |  |
Interest on long term debt | 202,000 | 0
Mortgage |  |
Schedule of Interest Expense [Line Items] |  |
Interest on long term debt | 105,000 | 0
Amortization of deferred financing costs | $ 256,000 | $ 344,000

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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