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Components of Accumulated Other Comprehensive Loss - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Other Operating Income (Expense), Net | $ 292 |  | $ 1,717 |  | $ (5,441) | $ (26)
Product revenues | 447,281 |  | 350,898 |  | 846,122 | 680,800
Interest expense | 14,953 |  | 6,103 |  | 27,602 | 11,610
Income from continuing operations before income taxes | (11,978) |  | 3,380 |  | (20,452) | 16,892
Income tax expense (benefit) | (2,304) |  | 3,994 |  | (2,986) | 5,213
Net income (loss) | (9,455) | $ 1,227 | 10,929 | $ 22,537 | (8,228) | 33,466
Amount Reclassified from Accumulated Other Comprehensive Loss | Accumulated Foreign Currency Adjustment Attributable to Parent [Member] |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Other Operating Income (Expense), Net | 0 |  |  |  |  |
Amount Reclassified from Accumulated Other Comprehensive Loss | Cumulative Unrecognized Actuarial Losses on Pension Obligations |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Income from continuing operations before income taxes | 4,863 |  | 5,176 |  | 15,413 | 10,300
Income tax expense (benefit) | (323) |  | (379) |  | (2,033) | (721)
Net income (loss) | 4,540 |  | 4,797 |  | 13,380 | 9,579
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Income from continuing operations before income taxes | 695 |  | 2,384 |  | (26) | 2,365
Income tax expense (benefit) | (263) |  | (599) |  | (187) | (643)
Net income (loss) | 432 |  | 1,785 |  | (213) | 1,722
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments | Foreign currency exchange forward contracts |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Other Operating Income (Expense), Net |  |  | 0 |  | 0 | (2,271)
Discontinued Operation, Gain From Disposal Of Discontinued Operation, Before Income Tax | 0 |  | 0 |  | 12,906 | 0
Product revenues | (332) |  | (433) |  | (1,736) | (465)
Cost of services sold | 0 |  | 44 |  | 0 | 44
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments | Cross currency interest rate swaps |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Interest expense | 295 |  | 303 |  | 600 | 617
Amount Reclassified from Accumulated Other Comprehensive Loss | Effective Portion of Deriviatives Designated as Hedging Instruments | Interest rate swaps |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Interest expense | 732 |  | (271) |  | 1,110 | (572)
Income from discontinued business | 0 |  | 2,741 |  | 0 | 2,741
Amount Reclassified from Accumulated Other Comprehensive Loss | Actuarial losses |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Defined benefit pension income (expense) | 4,757 |  | 4,982 |  | 9,837 | 10,040
Amount Reclassified from Accumulated Other Comprehensive Loss | Prior service costs (benefits) |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Defined benefit pension income (expense) | 0 |  | 0 |  | 5,363 | 0
Amount Reclassified from Accumulated Other Comprehensive Loss | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Defined benefit pension income (expense) | 106 |  | 65 |  | 213 | 131
Amount Reclassified from Accumulated Other Comprehensive Loss | AOCI Attributable to Parent |  |  |  |  |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |
Defined benefit pension income (expense) | $ 0 |  | $ 129 |  | $ 0 | $ 129

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