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Geographic and Segment Information (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended | 63 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 02, 2020 USD ($) | Nov. 30, 2019 USD ($) | Dec. 31, 2021 USD ($) geographic_region | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) segment geographic_region | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Number of geographic regions in which entity operates | geographic_region |  |  | 3 |  |  |  |  |  |  |  |  | 3 |  |  |  |  |  |
Net sales |  |  | $ 270,064 | $ 253,215 | $ 264,483 | $ 247,603 | $ 269,555 |  | $ 240,083 | $ 182,206 | $ 242,397 | $ 1,035,365 | $ 934,241 | [1] | $ 1,084,170 | [1] |  |
Reportable segments income (loss) before income taxes |  |  |  |  |  |  |  |  |  |  |  | 36,183 | (220,683) |  | (95,468) |  |  |
Operating loss from continuing operations |  |  | 24,754 | $ 16,422 | $ (36,262) | $ (5,698) | (249,023) |  | $ (7,552) | $ (16,743) | $ (581) | (784) | (273,899) | [1] | (171,554) | [1] |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  | 435 | 131 | [1] | 803 | [1] |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  | (50,151) | (40,837) | [1] | (15,091) | [1] |  |
Loss on debt extinguishment |  |  |  |  |  |  |  |  |  |  |  | (60,238) | (1,407) | [1],[2] | 0 | [1],[2] |  |
Foreign exchange and other gains/(losses) |  |  |  |  |  |  |  |  |  |  |  | (13,734) | (32,010) | [1] | (2,536) | [1] |  |
Loss from continuing operations before tax |  |  |  |  |  |  |  |  |  |  |  | (124,472) | (348,022) | [1] | (188,378) | [1] |  |
Litigation provision, net |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |
Impairment of long-lived assets |  | $ 89,000 |  |  |  |  |  |  |  |  |  | 0 | 6,762 | [2] | 142,517 | [2] |  |
Impairment of disposal group and loss on sale |  |  |  |  |  |  |  |  |  |  |  | 0 | 180,160 | [1] | 0 | [1] |  |
Impairment of goodwill | $ 21,300 | $ 42,400 |  |  |  |  |  |  |  |  |  | 0 | 21,269 | [1],[2] | 42,417 | [1],[2] | $ 63,700 |
Decommissioning provision |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |
Total Assets |  |  | 2,200,951 |  |  |  | 2,399,961 | [3] |  |  |  | 2,200,951 | 2,399,961 | [3] |  |  | 2,399,961 | [3]
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 22,313 | 35,916 |  | 27,977 |  |  |
Heart Valves |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of disposal group and loss on sale |  |  |  |  |  |  |  |  |  |  |  |  | 180,200 |  |  |  |  |
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 21,300 |  |  |  |  |
Caisson Interventional LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 89,000 |  |  |
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 42,400 |  |  |
ImThera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,300 |  |  |
Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other expenses |  |  |  |  |  |  |  |  |  |  |  | 36,967 | 53,216 |  | 76,086 |  |  |
Cardiopulmonary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation provision, net |  |  |  |  |  |  |  |  |  |  |  | 38,100 | 3,900 |  | (600) |  |  |
United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 571,299 | 468,634 |  | 546,484 |  |  |
Europe |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 201,525 | 193,367 |  | 223,183 |  |  |
Rest of World |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 262,541 | 272,240 |  | 314,503 |  |  |
United Kingdom |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 35,800 | 29,700 |  | 37,700 |  |  |
Saluggia, Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation provision, net |  |  |  |  |  |  | 42,200 |  |  |  |  | 39,300 | 43,000 |  |  |  |  |
Decommissioning provision |  |  |  |  |  |  |  |  |  |  |  |  | 42,200 |  |  |  |  |
Operating Segments | Cardiopulmonary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 482,979 | 446,732 |  | 504,716 |  |  |
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Operating Segments | Cardiopulmonary | Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reportable segments income (loss) before income taxes |  |  |  |  |  |  |  |  |  |  |  | (6,429) | 35,735 |  | 50,533 |  |  |
Total Assets |  |  | 921,481 |  |  |  | 1,040,318 |  |  |  |  | 921,481 | 1,040,318 |  |  |  | 1,040,318 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 14,824 | 20,975 |  | 16,302 |  |  |
Operating Segments | Neuromodulation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 456,172 | 354,444 |  | 424,547 |  |  |
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Operating Segments | Neuromodulation | Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reportable segments income (loss) before income taxes |  |  |  |  |  |  |  |  |  |  |  | 169,499 | 109,273 |  | 83,333 |  |  |
Total Assets |  |  | 646,394 |  |  |  | 673,579 |  |  |  |  | 646,394 | 673,579 |  |  |  | 673,579 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 179 | 7,318 |  | 3,415 |  |  |
Operating Segments | Advanced Circulatory Support |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 55,459 | 42,321 |  | 31,923 |  |  |
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Operating Segments | Advanced Circulatory Support | Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reportable segments income (loss) before income taxes |  |  |  |  |  |  |  |  |  |  |  | 2,195 | (575) |  | 3,941 |  |  |
Total Assets |  |  | 231,846 |  |  |  | 239,404 |  |  |  |  | 231,846 | 239,404 |  |  |  | 239,404 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 1,326 | 733 |  | 540 |  |  |
Operating Segments | United States | Cardiopulmonary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 154,073 | 132,543 |  | 161,471 |  |  |
Operating Segments | United States | Neuromodulation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 358,476 | 282,509 |  | 335,332 |  |  |
Operating Segments | United States | Advanced Circulatory Support |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 53,821 | 41,094 |  | 30,781 |  |  |
Operating Segments | Europe | Cardiopulmonary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 134,562 | 122,062 |  | 135,632 |  |  |
Operating Segments | Europe | Neuromodulation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 51,435 | 39,019 |  | 46,262 |  |  |
Operating Segments | Europe | Advanced Circulatory Support |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 1,120 | 1,027 |  | 741 |  |  |
Operating Segments | Rest of World | Cardiopulmonary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 194,344 | 192,127 |  | 207,613 |  |  |
Operating Segments | Rest of World | Neuromodulation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 46,261 | 32,916 |  | 42,953 |  |  |
Operating Segments | Rest of World | Advanced Circulatory Support |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 518 | 200 |  | 401 |  |  |
Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 40,755 | 90,744 |  | 122,984 |  |  |
Impairment of goodwill |  |  |  |  |  |  |  |  |  |  |  |  | 21,269 |  |  |  |  |
Other | Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reportable segments income (loss) before income taxes |  |  |  |  |  |  |  |  |  |  |  | (129,082) | (365,116) |  | (233,275) |  |  |
Total Assets |  |  | $ 401,230 |  |  |  | $ 446,660 |  |  |  |  | 401,230 | 446,660 |  |  |  | $ 446,660 |
Capital expenditures |  |  |  |  |  |  |  |  |  |  |  | 5,984 | 6,890 |  | 7,720 |  |  |
Other | United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 4,929 | 12,488 |  | 18,900 |  |  |
Other | Europe |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | 14,407 | 31,259 |  | 40,548 |  |  |
Other | Rest of World |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | $ 21,419 | $ 46,997 |  | $ 63,536 |  |  |
[1] | The consolidated statements of income (loss) for the years ended December 31, 2020 and 2019 have been revised. For further details refer to “Note 1. Nature of Operations.”
[2] | The consolidated statements of cash flows for the years ended December 31, 2020 and 2019 have been revised. For further details refer to “Note 1. Nature of Operations.”
[3] | The consolidated balance sheet as of December 31, 2020 has been revised. For further details refer to “Note 1. Nature of Operations.”

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