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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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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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