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Other income (expense) and finance costs (gains)
 12 Months Ended
Dec. 31, 2023
Analysis of income and expense [abstract]  
Other income (expense) and finance costs (gains)
18. Other income (expense) and finance costs (gains)
(a) Other income (expense)December 31, 2023December 31, 2022
Interest income and other$23,953 $8,856 
(Loss) gain on disposal of assets(605)2,959 
Unrealized loss on derivative instruments(9,584)— 
Realized gain on derivative instruments431 — 
Asset retirement obligation provision for closed facility— (13)
$14,195 $11,802 
(b) Finance costs (gains)December 31, 2023December 31, 2022
 Interest cost on senior notes due 2029 (Note 16)
$31,486 $31,385 
Interest cost on Term Facility (Note 16)
4,526 — 
 Other interest and financing costs9,835 2,189 
 (Gain) loss on redemption option derivative (Note 16)
(1,959)4,429 
 Interest expense on lease liabilities1,747 1,642 
 Asset retirement obligation accretion4,291 1,980 
 Total finance costs$49,926 $41,625 
 Less: capitalized interest(17,087)— 
$32,839 $41,625