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v3.25.1

PROPERTY, PLANT AND EQUIPMENT, NET - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 29, 2025 | Mar. 30, 2024 | Dec. 29, 2024 | Dec. 28, 2024
Property, Plant and Equipment [Line Items] |  |  |  |
Depreciation | $ 43,400 | $ 45,700 |  |
Net income available to Charles River Laboratories International, Inc. common shareholders | $ 25,469 | $ 67,329 |  |
Basic (in dollars per share) | $ 0.50 | $ 1.31 |  |
Diluted (in dollars per share) | $ 0.50 | $ 1.30 |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Assets held for sale | $ 20,000 |  |  |
Service Life |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Depreciation | (4,500) |  |  |
Net income available to Charles River Laboratories International, Inc. common shareholders | $ 3,400 |  |  |
Basic (in dollars per share) | $ 0.07 |  |  |
Diluted (in dollars per share) | $ 0.07 |  |  |
Machinery and equipment |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  |  | 7 years | 5 years
Building Improvements |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, plant and equipment, useful life |  |  | 15 years | 10 years

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