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PROPERTY, PLANT AND EQUIPMENT - Schedule of Estimated Useful Lives (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Property, plant and equipment |  |
Property, plant and equipment, at cost | $ 719,487 | $ 589,524
Accumulated depreciation | (195,287) | (137,538)
Property, plant and equipment, net | 524,200 | 451,986
Land |  |
Property, plant and equipment |  |
Property, plant and equipment, at cost | 4,466 | 4,466
Leasehold and building improvements |  |
Property, plant and equipment |  |
Property, plant and equipment, at cost | $ 142,025 | 117,865
Land improvements |  |
Property, plant and equipment |  |
Estimated Useful Life | 15 years |
Property, plant and equipment, at cost | $ 4,894 | 4,864
Buildings |  |
Property, plant and equipment |  |
Property, plant and equipment, at cost | $ 201,040 | 200,980
Computer equipment and computer software |  |
Property, plant and equipment |  |
Estimated Useful Life | 3 years |
Property, plant and equipment, at cost | $ 99,889 | 75,417
Laboratory equipment |  |
Property, plant and equipment |  |
Property, plant and equipment, at cost | 175,393 | 142,110
Furniture and fixtures |  |
Property, plant and equipment |  |
Property, plant and equipment, at cost | 27,593 | 24,968
Assets under construction |  |
Property, plant and equipment |  |
Property, plant and equipment, at cost | $ 64,187 | $ 18,854
Minimum | Buildings |  |
Property, plant and equipment |  |
Estimated Useful Life | 30 years |
Minimum | Laboratory equipment |  |
Property, plant and equipment |  |
Estimated Useful Life | 3 years |
Minimum | Furniture and fixtures |  |
Property, plant and equipment |  |
Estimated Useful Life | 3 years |
Maximum | Buildings |  |
Property, plant and equipment |  |
Estimated Useful Life | 40 years |
Maximum | Laboratory equipment |  |
Property, plant and equipment |  |
Estimated Useful Life | 10 years |
Maximum | Furniture and fixtures |  |
Property, plant and equipment |  |
Estimated Useful Life | 10 years |

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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