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Significant Accounting Policies - Comprehensive Income (Loss) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |
Accumulated other comprehensive loss | $ (34,247,000) | $ (35,068,000) | $ 9,200,000
Tax from unrealized gains and losses on marketable securities | 100,000 | 100,000 | 200,000
Reclassifications from AOCI | $ 0 | $ 0 | $ 0

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