Financial Risk Management - Additional Information (Details) ¥ in Millions, kr in Millions |
12 Months Ended | |||||||||||||
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Sep. 30, 2025
USD ($)
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Mar. 23, 2023 |
Dec. 31, 2025
USD ($)
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Dec. 31, 2025
SEK (kr)
|
Dec. 31, 2024
USD ($)
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Dec. 31, 2024
SEK (kr)
|
Dec. 31, 2023
USD ($)
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Dec. 31, 2025
SEK (kr)
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Dec. 31, 2025
CNY (¥)
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Sep. 30, 2025
SEK (kr)
|
Mar. 19, 2025
USD ($)
|
Mar. 19, 2025
CNY (¥)
|
Apr. 30, 2023
USD ($)
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Dec. 31, 2022
USD ($)
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|
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Currency derivatives | kr | kr 148.5 | kr 64.9 | ||||||||||||
| Fair value of currency derivatives | $ 100,000 | $ 0 | ||||||||||||
| Convertible notes | 333,145,000 | 324,395,000 | $ 323,528,000 | |||||||||||
| Outstanding amounts | 523,049,000 | 446,368,000 | ||||||||||||
| Impairments loss for outstanding trade receivables | 0 | 0 | ||||||||||||
| Cash and cash equivalents | 64,345,000 | 98,923,000 | $ 249,299,000 | $ 82,644,000 | ||||||||||
| Long term financing | $ 130,000,000 | |||||||||||||
| Liabilities to credit institutions balance | $ 523,049,000 | $ 446,368,000 | ||||||||||||
| Description of Objectives, Policies and Processes for Managing Capital | 3.2. Capital management The Group’s objectives when managing capital are to safeguard its ability to continue as a going concern, so that the Group can continue its business and provide future returns for shareholders and maintain an optimal capital structure to reduce the cost of capital. In order to maintain or adjust the capital structure, the Group may issue new shares or sell assets to reduce debt. Capital is calculated as “equity attributable to shareholders of the parent” as shown in the balance sheet plus total borrowings (including non-current and current interest-bearing loans and borrowings and lease liabilities as shown in the balance sheet) less cash and cash equivalents. |
3.2. Capital management The Group’s objectives when managing capital are to safeguard its ability to continue as a going concern, so that the Group can continue its business and provide future returns for shareholders and maintain an optimal capital structure to reduce the cost of capital. In order to maintain or adjust the capital structure, the Group may issue new shares or sell assets to reduce debt. Capital is calculated as “equity attributable to shareholders of the parent” as shown in the balance sheet plus total borrowings (including non-current and current interest-bearing loans and borrowings and lease liabilities as shown in the balance sheet) less cash and cash equivalents. |
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| CMB Credit Facility | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Utilized Loan Amount | $ 2,800,000 | ¥ 20.0 | ||||||||||||
| Super Senior Revolving Credit Facility Agreement | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Undrawn borrowing facilities | $ 79,800,000 | kr 750.0 | ||||||||||||
| Single External Customer | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Percentage of revenues derived from customer | 6.00% | 6.00% | 10.00% | 10.00% | 12.00% | |||||||||
| SRCF Agreement | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Utilized Loan Amount | $ 0 | |||||||||||||
| Nordic Bonds | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Nordic bonds | $ 180,900,000 | kr 1,700.0 | ||||||||||||
| Interest rate description | The interest risk for the Nordic Bonds is calculated for the three months October 1 to December 31, 2025. | The interest risk for the Nordic Bonds is calculated for the three months October 1 to December 31, 2025. | ||||||||||||
| Outstanding amounts | $ 187,100,000 | 1,716.0 | ||||||||||||
| Maturity | four years | 3 years | 3 years | |||||||||||
| Liabilities to credit institutions balance | $ 187,100,000 | kr 1,716.0 | ||||||||||||
| Nordic Bonds | CAP | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Interest rate | 1.95% | 1.95% | 1.95% | |||||||||||
| Maturity | 3 years | 3 years | ||||||||||||
| Working Capital Credit Facility | CMB Credit Facility | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Outstanding amounts | $ 4,200,000 | ¥ 30.0 | ||||||||||||
| Liabilities to credit institutions balance | $ 4,200,000 | ¥ 30.0 | ||||||||||||
| Liabilities To Credit Institutions And Available Facilities | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Maturity | 40 | 40 | 29 | 29 | 41 | |||||||||
| Super Senior Revolving Credit Facility | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Outstanding amounts | $ 79,800,000 | kr 750.0 | ||||||||||||
| Increase decrease in interest rate basis points | 4.00% | 4.00% | ||||||||||||
| Undrawn borrowing facilities | $ 78,500,000 | $ 190,500,000 | ||||||||||||
| Borrowings, adjustment to interest rate basis | 4.00% | 4.00% | ||||||||||||
| Maturity | two years and six months | |||||||||||||
| Liabilities to credit institutions balance | $ 79,800,000 | kr 750.0 | ||||||||||||
| 9.25% Convertible Senior PIK Notes due 2028 | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Convertible notes, maturity date | Sep. 14, 2028 | Sep. 14, 2028 | Sep. 14, 2028 | |||||||||||
| Commodity Price Risk | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Percentage of increase in general commodity cost price to effect commodity cost | 5.00% | 5.00% | ||||||||||||
| Expected increase in commodity cost due to increase in general commodity cost price | $ 12,800,000 | $ 11,800,000 | $ 12,000,000 | |||||||||||
| Interest Rate Cap | Nordic Bonds | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Nordic bonds | kr | kr 850.0 | |||||||||||||
| Top of Range | Nordic Bonds | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Total net leverage ratio | 2.75% | |||||||||||||
| Top of Range | Super Senior Revolving Credit Facility | ||||||||||||||
| Disclosure Of Financial Risk Management [Line Items] | ||||||||||||||
| Total net leverage ratio | 3.50% | |||||||||||||