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v3.20.4

Long term debt - Convertible Debentures (Details) |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2020 CAD ($) | Apr. 06, 2020 CAD ($) shares | Apr. 30, 2020 CAD ($) | Mar. 31, 2020 CAD ($) shares | Dec. 31, 2020 CAD ($) | Dec. 31, 2019 CAD ($) | Mar. 23, 2020 | Mar. 20, 2019 CAD ($) | Mar. 20, 2019 $ / shares | Mar. 15, 2017 CAD ($) | Mar. 15, 2017 $ / shares
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 357,854,000 | $ 331,957,000 |  |  |  |  |
Debt issuance costs |  |  |  |  | 2,196,000 | 3,896,000 |  |  |  |  |
Net realized gain (loss) |  |  |  |  | 4,266,000 | 0 |  |  |  |  |
Settled promissory notes |  |  |  |  | 17,022,000 |  |  |  |  |  |
Interest Rate Swap |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net realized gain (loss) | $ 2,142,000 |  | $ (2,210,000) |  |  |  |  |  |  |  |
Unrealized gain |  |  |  |  | 4,334,000 |  |  |  |  |  |
Five Point Five Zero Percent Convertible Debentures |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  | $ 38,605,000 |  | $ 426,000 |  |  |  |  |  |  |
Issuance of common shares | shares |  | 4,583,655,000 |  | 39,261,000 |  |  |  |  |  |  |
Financing obligations |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | 51,118,000 | 15,435,000 |  |  |  |  |
Debt instrument related obligations |  |  |  |  | $ 45,357,000 |  |  |  |  |  |
Financing obligations | Minimum |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 2.38% |  |  |  |  |  |
Financing obligations | Maximum |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 3.34% |  |  |  |  |  |
Convertible Subordinated Debt |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 55,000,000 | 94,031,000 |  |  |  |  |
Redemption price as a percentage of the principal amount |  |  |  |  | 101.00% |  |  |  |  |  |
Wrote off unamortized deferred financing costs |  |  |  |  | $ 1,286,000 |  |  |  |  |  |
Convertible Subordinated Debt | FIve Point Zero Percent Convertible Debentures |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 55,000,000 | $ 55,000,000 |  |  |  |  |
Interest rate |  |  |  |  | 5.00% | 5.00% |  |  |  |  |
Conversion price (in CAD per share) | $ / shares |  |  |  |  |  |  |  |  | $ 26.25 |  |
Share equivalence per $1000 debenture |  |  |  |  |  |  |  | $ 38.0952 |  |  |
Debt issuance costs |  |  |  |  |  |  |  | $ 2,691,000 |  |  |
Convertible Subordinated Debt | Five Point Five Zero Percent Convertible Debentures |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  | $ 0 | $ 39,031,000 |  |  |  |  |
Interest rate | 5.50% | 5.50% | 5.50% |  | 5.50% | 5.50% | 5.50% |  |  | 5.50% |
Conversion price (in CAD per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 10.85
Debt issuance costs |  |  |  |  |  |  |  |  |  | $ 2,133,000 |
Secured Debt | Equipment Promissory Note |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 3.45% |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 15,100,000 |  |  |  |  |  |

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