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Goodwill and Intangible Assets - Narrative (Details) $ in Thousands, £ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 GBP (£) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |
Recognition of goodwill | £ | £ 1.5 |  |
Cumulative goodwill impairment charges |  | $ 0 |
Goodwill |  | 1,893 | $ 1,798
Amortization expense |  | $ 0 | $ 914

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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