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BUSINESS COMBINATIONS - Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 30, 2021	Mar. 29, 2021	Dec. 31, 2020	Aug. 06, 2020	Jan. 03, 2020
Retrogenix Limited
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 22,126
Weighted-average amortization life	11 years
Cognate BioServices, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired		$ 266,700
Weighted-average amortization life		13 years
Distributed Bio, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired			$ 24,540
Weighted-average amortization life			7 years
Cellero, LLC
Business Acquisition [Line Items]
Definite-lived intangible assets acquired				$ 16,230
Weighted-average amortization life				12 years
HemaCare Corporation
Business Acquisition [Line Items]
Definite-lived intangible assets acquired					$ 183,540
Weighted-average amortization life					18 years
Customer and client relationships | Retrogenix Limited
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 17,340
Weighted-average amortization life	13 years
Customer and client relationships | Cognate BioServices, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired		$ 252,900
Weighted-average amortization life		14 years
Customer and client relationships | Distributed Bio, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired			$ 16,080
Weighted-average amortization life			9 years
Customer and client relationships | Cellero, LLC
Business Acquisition [Line Items]
Definite-lived intangible assets acquired				$ 14,740
Weighted-average amortization life				13 years
Customer and client relationships | HemaCare Corporation
Business Acquisition [Line Items]
Definite-lived intangible assets acquired					$ 170,390
Weighted-average amortization life					19 years
Developed technology | Retrogenix Limited
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 3,685
Weighted-average amortization life	3 years
Developed technology | Distributed Bio, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired			$ 3,940
Weighted-average amortization life			5 years
Trade name | HemaCare Corporation
Business Acquisition [Line Items]
Definite-lived intangible assets acquired					$ 7,330
Weighted-average amortization life					10 years
Other intangible assets | Retrogenix Limited
Business Acquisition [Line Items]
Definite-lived intangible assets acquired	$ 1,101
Weighted-average amortization life	2 years
Other intangible assets | Cognate BioServices, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired		$ 4,900
Weighted-average amortization life		2 years
Other intangible assets | Distributed Bio, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired			$ 4,520
Weighted-average amortization life			4 years
Other intangible assets | Cellero, LLC
Business Acquisition [Line Items]
Definite-lived intangible assets acquired				$ 1,490
Weighted-average amortization life				3 years
Other intangible assets | HemaCare Corporation
Business Acquisition [Line Items]
Definite-lived intangible assets acquired					$ 5,820
Weighted-average amortization life					3 years
Backlog | Cognate BioServices, Inc.
Business Acquisition [Line Items]
Definite-lived intangible assets acquired		$ 8,900
Weighted-average amortization life		1 year

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