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Investments (Carrying Amount for Equity Method Investment) (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Debt Securities, Available-for-sale [Line Items] |  |
Investment in corporate debt securities | $ 15,000 |
Maximum exposure to loss | 113,460 | $ 122,593
Investment in corporate debt securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Investment in corporate debt securities | 15,000 |
Maximum exposure to loss | $ 15,000 |

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