Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Financial instruments (Schedule of Contractual Maturities for Long-Term Debt Repayable) (Details)

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Financial instruments (Schedule of Contractual Maturities for Long-Term Debt Repayable) (Details) - CAD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Disclosure of financial liabilities [line items]
Accounts payable and accrued liabilities $ 6,157 $ 7,575
Amounts due to directors 60 49
Long-term leases 1,208 1,308
Long-term debt 8,373 $ 8,069
Total [Member]
Disclosure of financial liabilities [line items]
Accounts payable and accrued liabilities 6,157
Amounts due to directors 60
Short term and low value leases 52
Long-term leases 2,028
Long-term debt 15,766
Financial liabilities 24,063
Year 1 [Member]
Disclosure of financial liabilities [line items]
Accounts payable and accrued liabilities 6,157
Amounts due to directors 60
Short term and low value leases 18
Long-term leases 239
Long-term debt 263
Financial liabilities 6,737
Years 2 to 3 [Member]
Disclosure of financial liabilities [line items]
Accounts payable and accrued liabilities
Amounts due to directors
Short term and low value leases 25
Long-term leases 479
Long-term debt 2,444
Financial liabilities 2,948
Years 4 to 5 [Member]
Disclosure of financial liabilities [line items]
Accounts payable and accrued liabilities
Amounts due to directors
Short term and low value leases 9
Long-term leases 480
Long-term debt 2,208
Financial liabilities 2,697
After 5 years [Member]
Disclosure of financial liabilities [line items]
Accounts payable and accrued liabilities
Amounts due to directors
Short term and low value leases
Long-term leases 830
Long-term debt 10,851
Financial liabilities $ 11,681