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Restructuring, Impairment and Costs of Terminated Program - Restructuring Reserve Rollforward (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Dec. 31, 2023
Employee Severance |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | $ 196 | $ 802 | $ 5,483 | $ 3,299 | $ 196 | $ 3,299
Expense recognized during the period |  |  |  | 535 | 1,943 | 5,483 | 0 |
Payments during the period |  |  |  | (887) | (6,624) | (3,299) | (196) |
Restructuring reserve, ending balance | $ 0 |  |  | 450 | 802 | 5,483 | 0 | 196
Employee Severance | 2023 Restructuring Plan |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | 196 | 802 | 5,483 | 0 | 196 | 0
Expense recognized during the period |  |  |  | 535 | 1,943 | 5,483 | 0 | 7,900
Payments during the period |  |  | (200) | (887) | (6,624) | 0 | (196) |
Restructuring reserve, ending balance | 0 |  |  | 450 | 802 | 5,483 | 0 | 196
Employee Severance | 2022 Restructuring Plan |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance |  |  | 0 | 0 | 0 | 3,299 | 0 | 3,299
Expense recognized during the period |  |  |  | 0 | 0 | 0 | 0 |
Payments during the period |  |  |  | 0 | 0 | (3,299) | 0 |
Restructuring reserve, ending balance | 0 |  |  | 0 | 0 | 0 | 0 | 0
Contract Termination and Other Costs | Restructuring Plan |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |
Restructuring reserve, beginning balance | 9,662 | $ 5,589 | 5,542 | 6,229 | 7,493 | 7,710 | 5,542 | 7,710
Expense recognized during the period | 46 | 4,960 | 975 | 0 | 0 | 912 |  |
Payments during the period | (886) | (887) | (928) | (460) | (1,264) | (1,129) |  |
Restructuring reserve, ending balance | $ 8,822 | $ 9,662 | $ 5,589 | $ 5,769 | $ 6,229 | $ 7,493 | $ 8,822 | $ 5,542

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-17 + Details
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