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Investments (Schedule of Long-term Investments) (Details) $ in Thousands, € in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | [1] | Dec. 31, 2021 EUR (€)
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | $ 15,811 | $ 30,701 |  |  |
Equity method investments |  |  |  | 787 | 393 |  |  |
Total investments |  |  |  | 16,598 | 31,094 |  |  |
Proceeds from sale of Respicardia investment and loan |  |  |  | 23,057 | 0 | [1] | $ 0 |
Equity method investments, required funding |  |  |  | 5,700 |  |  |  | € 5.0
ShiraTronics,Inc |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 3,331 | 2,045 |  |  |
Noctrix Health, Inc. |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 3,159 | 1,359 |  |  |
A Lung Technologies Inc |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 3,000 | 3,000 |  |  |
A Lung Technologies Inc | Convertible Notes Receivable |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Notes receivable gross |  |  |  | 2,500 | 2,500 |  |  |
Ceribell, Inc. |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 3,000 | 3,000 |  |  |
MD Start II |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 1,135 | 1,227 |  |  |
Proceeds from cash dividend received |  | $ 3,100 |  |  |  |  |  |
Rainbow Medical Ltd |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 1,111 | 1,201 |  |  |
Highlife S.A.S. |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 1,075 | 1,163 |  |  |
Respicardia Inc. |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Carrying value |  |  |  | 0 | 17,706 |  |  |
Zoll Medical Corporation | Investee |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Proceeds from sale of Respicardia investment and loan | $ 23,100 |  |  |  |  |  |  |
Gain on sale of investment |  |  | $ 4,600 |  |  |  |  |
Zoll Medical Corporation | Prepaid Expenses and Other Current Assets | Investee |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |
Outstanding loans |  |  |  | $ 17,700 | $ 800 |  |  |
[1] | 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.”

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