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Long term debt (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of long term debt |
| Note |  | December 31, 2020 |  | December 31, 2019
Credit Facility | 7(a) |  | $ | 220,000 |  |  | $ | 190,000 |
Convertible debentures | 7(b) |  | 55,000 |  |  | 94,031 |
Mortgages |  |  | 21,206 |  |  | 21,739 |
Financing obligations | 7(c) |  | 51,118 |  |  | 15,435 |
Promissory notes | 7(d) |  | 12,726 |  |  | 14,648 |
Unamortized deferred financing costs | 7(e) |  | (2,196) |  |  | (3,896) |
|  |  | $ | 357,854 |  |  | $ | 331,957 |
Less: current portion of long-term debt |  |  | (16,307) |  |  | (18,514) |
|  |  | $ | 341,547 |  |  | $ | 313,443 |
|  | December 31, 2020 |  | December 31, 2019
Cost |  | $ | 2,784 |  |  | $ | 4,918 |
Accumulated amortization |  | 588 |  |  | 1,022 |
|  | $ | 2,196 |  |  | $ | 3,896 |
Schedule of convertible debt | Due to the November 1, 2019 reorganization of the NL Partnership, amounts outstanding under the Nuna Credit Facility as at December 31, 2019 are now included in investments in affiliates and joint ventures on the Consolidated Balance Sheets (note 10). b) Convertible debentures
| December 31, 2020 |  | December 31, 2019
5.00% convertible debentures | $ | 55,000 |  |  | $ | 55,000 |
5.50% convertible debentures | — |  |  | 39,031 |
| $ | 55,000 |  |  | $ | 94,031 |
The terms of the convertible debentures are summarized as follows:
| Date of issuance |  | Maturity |  | Conversion price |  | Share equivalence per $1000 debenture |  | Debt issuance costs
5.00% convertible debentures | March 20, 2019 |  | March 31, 2026 |  | $ | 26.25 |  |  | $ | 38.0952 |  |  | $ | 2,691 |

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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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