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Components of Accumulated Other Comprehensive Loss - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Interest expense | $ 28,353 |  |  | $ 28,813 |  |  | $ 82,527 | $ 84,869
Income (loss) from continuing operations before income taxes and equity in income | (19,151) |  |  | 2,305 |  |  | (64,588) | (5,602)
Income tax expense (benefit) | 1,066 |  |  | 13,437 |  |  | 12,621 | 31,372
Net income (loss) | (21,358) | $ (46,549) | $ (12,195) | (12,267) | $ (11,120) | $ (16,846) | (80,102) | (40,233)
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Derivatives Designated as Hedging Instruments |  |  |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Income (loss) from continuing operations before income taxes and equity in income | 384 |  |  | (325) |  |  | 1,043 | (2,575)
Income tax expense (benefit) | 103 |  |  | 63 |  |  | (134) | 592
Net income (loss) | 487 |  |  | (262) |  |  | 909 | (1,983)
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Derivatives Designated as Hedging Instruments | Foreign currency exchange forward contracts |  |  |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Product revenues | 503 |  |  | 541 |  |  | 1,392 | 44
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Derivatives Designated as Hedging Instruments | Interest rate swaps |  |  |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Interest expense | (119) |  |  | (866) |  |  | (349) | (2,619)
Amount Reclassified from Accumulated Other Comprehensive Loss | Defined benefit pension items |  |  |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Income (loss) from continuing operations before income taxes and equity in income | 4,882 |  |  | 5,028 |  |  | 14,460 | 14,948
Income tax expense (benefit) | (204) |  |  | (263) |  |  | (611) | (788)
Net income (loss) | 4,678 |  |  | 4,765 |  |  | 13,849 | 14,160
Amount Reclassified from Accumulated Other Comprehensive Loss | Actuarial losses |  |  |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Defined benefit pension income (expense) | 4,759 |  |  | 4,909 |  |  | 14,100 | 14,594
Amount Reclassified from Accumulated Other Comprehensive Loss | Prior service costs |  |  |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |
Defined benefit pension income (expense) | $ 123 |  |  | $ 119 |  |  | $ 360 | $ 354

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