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Lease Obligations - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Lessee, Lease, Description [Line Items] |  |  |  |  |
Remaining lease term | 4 years 3 months 18 days |  | 4 years 3 months 18 days |  | 4 years 7 months 6 days
Discount rate | 5.98% |  | 5.98% |  | 6.12%
Operating lease expense | $ 5.7 | $ 5.7 | $ 16.4 | $ 17.2 |
Variable lease expense | 1.2 | 0.0 | 3.0 | 1.5 |
Cash paid for amounts included in lease liabilities | 6.4 | 6.0 | 16.7 | 18.8 |
Sublease income | 0.0 | $ 1.3 | 0.7 | $ 3.9 |
Total future undiscounted lease payments under leases not yet commenced | $ 7.1 |  | $ 7.1 |  |
Operating lease not yet commenced, term of contract | 4 years 4 months 24 days |  | 4 years 4 months 24 days |  |
Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Term of lease contract | 1 year |  | 1 year |  |
Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Term of lease contract | 10 years |  | 10 years |  |

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-4 + Details
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