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Debt - Additional information (Details)
€ in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
Oct. 15, 2021
USD ($)
Sep. 09, 2021
USD ($)
Aug. 26, 2021
USD ($)
Mar. 30, 2020
USD ($)
Aug. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
Feb. 28, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
EUR (€)
Dec. 31, 2021
CAD ($)
Aug. 31, 2021
USD ($)
Dec. 31, 2020
EUR (€)
Dec. 31, 2020
CAD ($)
Dec. 31, 2019
USD ($)
Jun. 05, 2019
May 31, 2019
USD ($)
Disclosure of financial liabilities [line items]                                    
Proceeds from borrowings, classified as financing activities                 $ 500,000,000 $ 150,000,000                
Borrowings $ 489,763,000               489,763,000 501,132,000                
Debt redemption premium paid                 517,286,000 132,714,000                
Debt redemption premium paid                 21,400,000 6,274,000                
Interest paid                 23,643,000 38,099,000                
Fair value                                    
Disclosure of financial liabilities [line items]                                    
Redemption option derivative asset 8,105,000               8,105,000 7,357,000                
Senior Notes due 2029                                    
Disclosure of financial liabilities [line items]                                    
Notional amount       $ 500,000,000                 $ 500,000,000          
Debt fixed interest rate (as a percent)       6.25%                 6.25%          
Proceeds from borrowings, classified as financing activities       $ 496,250,000                            
Borrowings 497,868,000               497,868,000 0                
Senior Notes due 2029 | Tüprag Metal Madencilik Sanayi ve Ticaret AS ("Tüprag")                                    
Disclosure of financial liabilities [line items]                                    
Payments of guarantee fees                 971,000 1,344,000                
Senior Notes due 2029 | Fair value                                    
Disclosure of financial liabilities [line items]                                    
Notional amount 508,405,000               508,405,000                  
Redemption option derivative asset 4,806,000               4,806,000                  
Gains on change in fair value of derivatives                 3,299,000                  
Senior Notes due 2029 | After September 1, 2026                                    
Disclosure of financial liabilities [line items]                                    
Redemption percentage of aggregate principal amount of borrowings (as a percent)       100.00%                            
Senior Notes due 2029 | Prior to September 1, 2024                                    
Disclosure of financial liabilities [line items]                                    
Percentage of aggregate principal amount of borrowings (as a percent)       100.00%                            
Premium percentage of principal amount of borrowings (as a percent)       1.00%                            
Borrowings, additional basis points       0.50%                            
Percentage of original principal amount of borrowings (as a percent)       40.00%                            
Redemption percentage of aggregate principal amount of borrowings (as a percent)       106.25%                            
Senior Notes due 2029 | September 1, 2024                                    
Disclosure of financial liabilities [line items]                                    
Redemption percentage of aggregate principal amount of borrowings (as a percent)       103.125%                            
Senior Notes due 2029 | September 1, 2025                                    
Disclosure of financial liabilities [line items]                                    
Redemption percentage of aggregate principal amount of borrowings (as a percent)       101.563%                            
Senior Notes due 2029 | Commission Payment and Certain Transaction Costs                                    
Disclosure of financial liabilities [line items]                                    
Borrowings       $ 3,750,000                            
Senior Notes due 2029 | Transaction Costs                                    
Disclosure of financial liabilities [line items]                                    
Borrowings       $ 3,259,000                            
Senior Secured Notes due 2024                                    
Disclosure of financial liabilities [line items]                                    
Debt fixed interest rate (as a percent)                                 9.50%  
Borrowings $ 0               0 226,647,000                
Debt redemption premium paid     $ 233,953,000           $ 233,953,000 66,047,000                
Debt redemption premium paid     21,400,000                              
Interest paid     6,050,000                              
Unamortized original discount and deferred financing costs     6,976,000                              
Write off of embedded derivative asset     $ 500,000                              
Senior Secured Credit Facility                                    
Disclosure of financial liabilities [line items]                                    
Notional amount   $ 250,000,000                               $ 450,000,000
Debt redemption premium paid             $ 22,233,000 $ 11,100,000                    
Borrowings, interest rate basis spread on LIBOR rate (as a percent) 2.125%               2.125%   2.125% 2.125%            
Additional borrowing capacity   $ 100,000,000                                
Loan undrawn standby fee (as a percent) 0.47813%                                  
Senior Secured Credit Facility | Bottom of range                                    
Disclosure of financial liabilities [line items]                                    
Borrowings, interest rate basis spread on LIBOR rate (as a percent)   2.125%                                
Loan undrawn standby fee (as a percent)   0.47813%                                
Senior Secured Credit Facility | Top of range                                    
Disclosure of financial liabilities [line items]                                    
Borrowings, interest rate basis spread on LIBOR rate (as a percent)   3.25%                                
Loan undrawn standby fee (as a percent)   0.73125%                                
Term loan                                    
Disclosure of financial liabilities [line items]                                    
Notional amount                                   200,000,000
Borrowings $ 0               $ 0 131,842,000                
Debt redemption premium paid                 133,333,000 66,667,000                
Revolving credit facility                                    
Disclosure of financial liabilities [line items]                                    
Notional amount                                   $ 250,000,000
Proceeds from borrowings, classified as financing activities         $ 150,000,000         150,000,000                
Borrowings 0               0 150,000,000           $ 0    
Debt redemption premium paid           $ 100,000,000 $ 50,000,000   150,000,000                  
Revolving credit facility | Bottom of range                                    
Disclosure of financial liabilities [line items]                                    
Borrowings, interest rate basis spread on LIBOR rate (as a percent)                                   2.25%
Revolving credit facility | Top of range                                    
Disclosure of financial liabilities [line items]                                    
Borrowings, interest rate basis spread on LIBOR rate (as a percent)                                   3.25%
Non-Financial Letters of Credit                                    
Disclosure of financial liabilities [line items]                                    
Borrowings $ 66,417,000               $ 66,417,000 $ 70,800,000 € 58,216 $ 426   € 57,600 $ 400      
Borrowings, interest rate basis spread on LIBOR rate (as a percent) 1.03%               1.03%   1.03% 1.03%            
Non-Financial Letters of Credit | Bottom of range                                    
Disclosure of financial liabilities [line items]                                    
Debt fixed interest rate (as a percent)   0.90%                                
Non-Financial Letters of Credit | Top of range                                    
Disclosure of financial liabilities [line items]                                    
Debt fixed interest rate (as a percent)   1.33%                                
Financial Letters of Credit                                    
Disclosure of financial liabilities [line items]                                    
Borrowings, interest rate basis spread on LIBOR rate (as a percent) 2.125%               2.125%   2.125% 2.125%