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v3.23.1

Debt - Narrative (Details) $ / shares in Units, € in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Apr. 30, 2021 USD ($) $ / shares | Mar. 31, 2023 USD ($) | Sep. 20, 2022 EUR (€) | Nov. 02, 2021 USD ($)
Senior secured notes, 7.5% | Senior notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest rate, percentage | 7.50% | 7.50% |  |
Face amount | $ 250,000,000 |  |  |
Proceeds from issuance of debt | 245,200,000 |  |  |
Senior secured notes, 7.5% | Level 2 | Senior notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Fair value of debt instrument |  | $ 237,800,000 |  |
Convertible notes | Senior notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Face amount | $ 86,300,000 |  |  |
Percentage of principal amount redeemed | 100.00% |  |  |
Proceeds from convertible notes | $ 83,700,000 |  |  |
Conversion ratio | 0.0533547 |  |  |
Conversion price (in dollars per share) | $ / shares | $ 18.74 |  |  |
Convertible notes | Level 2 | Senior notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Fair value of debt instrument |  | $ 70,700,000 |  |
Revolving credit facility | U.S. revolving credit facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest rate, percentage |  | 8.75% |  |
Credit facility face amount |  | $ 250,000,000 |  |
Revolving credit facility | Iceland revolving line of credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest rate, percentage |  | 7.66% |  |
Credit facility face amount |  | $ 100,000,000.0 |  |
Medium-term Notes |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility face amount | € |  |  | € 13.6 |
Casthouse facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Credit facility face amount |  |  |  | $ 130,000,000
Casthouse facility | Iceland revolving line of credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest rate, percentage |  | 8.08% |  |
Iceland term facility | Iceland revolving line of credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest rate, percentage |  | 5.77% |  |
Iceland term facility | Iceland revolving line of credit | EURIBOR |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Stated interest rate, percentage |  | 3.20% |  |

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