Significant Accounting Policies - Goodwill, Intangible Assets and Other Long-Lived Assets (Narrative) (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2023 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Accounting Policies [Abstract] | ||||
| Goodwill | $ 94,898,000 | $ 167,731,000 | $ 363,305,000 | |
| Goodwill impairment | $ 68,500,000 | $ 68,524,000 | $ 173,786,000 | $ 0 |
| Minimum | ||||
| Finite-Lived Intangible Assets [Line Items] | ||||
| Useful life | 4 years | |||
| Maximum | ||||
| Finite-Lived Intangible Assets [Line Items] | ||||
| Useful life | 10 years | |||
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- References No definition available.
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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