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Other assets - Schedule of other assets (Details) - CAD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |  |
Long term prepaid lease payments | $ 1,853 | $ 1,779 |
Other long term receivable | 619 | 0 |
Intangible assets | 2,916 | 938 |
Deferred financing costs | 1,178 | 707 |
Deferred lease inducement assets | 641 | 784 | $ 927
Loan to DNSS | 689 | 969 |
Contract costs | 2,308 | 422 |
Total other assets, noncurrent | $ 10,204 | $ 5,599 |

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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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