Goodwill and Intangibles, Net - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Finite-Lived Intangible Assets [Line Items] | ||||
| Amortization expense | $ 16,700 | $ 14,600 | $ 50,200 | $ 30,600 |
| Impairment of intangible assets | 31,000 | $ 0 | ||
| LNTH-2620 In Process Research and Development [Member] | ||||
| Finite-Lived Intangible Assets [Line Items] | ||||
| Impairment charges | 21,000 | |||
| Impairment of intangible assets | 21,000 | 21,000 | ||
| Fair Value of Assets Acquired | 21,000 | |||
| LNTH-2515 In Process Research And Development [Member] | ||||
| Finite-Lived Intangible Assets [Line Items] | ||||
| Impairment charges | 10,000 | |||
| Impairment of intangible assets | 10,000 | $ 10,000 | ||
| Fair Value of Assets Acquired | $ 13,000 | |||
| X | ||||||||||
- Definition Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The fair value of assets acquired in noncash investing or financing activities. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- 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/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of impairment loss for finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of impairment loss for indefinite-lived intangible asset. Excludes goodwill. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|