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BUSINESS COMBINATIONS - Purchase Price Allocation (Details) - USD ($) $ in Thousands | Jun. 26, 2021 | Mar. 30, 2021 | Mar. 29, 2021 | Dec. 31, 2020 | Dec. 26, 2020 | Aug. 06, 2020 | Jan. 03, 2020
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Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill | $ 2,540,067 |  |  |  | $ 1,809,168 |  |
Retrogenix Limited |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Trade receivables |  | $ 2,266 |  |  |  |  |
Other current assets (excluding cash) |  | 209 |  |  |  |  |
Property, plant and equipment |  | 400 |  |  |  |  |
Goodwill |  | 33,625 |  |  |  |  |
Definite-lived intangible assets |  | 22,126 |  |  |  |  |
Other long-term assets |  | 1,385 |  |  |  |  |
Current liabilities |  | (1,569) |  |  |  |  |
Deferred tax liabilities |  | (4,174) |  |  |  |  |
Other long-term liabilities |  | (1,205) |  |  |  |  |
Total purchase price allocation |  | $ 53,063 |  |  |  |  |
Cognate BioServices, Inc. |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Trade receivables |  |  | $ 16,564 |  |  |  |
Inventories |  |  | 4,231 |  |  |  |
Other current assets (excluding cash) |  |  | 9,840 |  |  |  |
Property, plant and equipment |  |  | 52,082 |  |  |  |
Operating lease right-of-use assets, net |  |  | 34,349 |  |  |  |
Goodwill |  |  | 603,379 |  |  |  |
Definite-lived intangible assets |  |  | 266,700 |  |  |  |
Other long-term assets |  |  | 6,098 |  |  |  |
Deferred revenue |  |  | (18,582) |  |  |  |
Current liabilities |  |  | (32,517) |  |  |  |
Operating lease right-of-use liabilities |  |  | (31,383) |  |  |  |
Deferred tax liabilities |  |  | (34,256) |  |  |  |
Other long-term liabilities |  |  | (414) |  |  |  |
Total purchase price allocation |  |  | $ 876,091 |  |  |  |
Distributed Bio, Inc. |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Trade receivables |  |  |  | $ 2,722 |  |  |
Other current assets (excluding cash) |  |  |  | 221 |  |  |
Property, plant and equipment |  |  |  | 2,382 |  |  |
Goodwill |  |  |  | 71,585 |  |  |
Definite-lived intangible assets |  |  |  | 24,540 |  |  |
Other long-term assets |  |  |  | 2,055 |  |  |
Current liabilities |  |  |  | (2,823) |  |  |
Deferred tax liabilities |  |  |  | (2,529) |  |  |
Other long-term liabilities |  |  |  | (1,123) |  |  |
Total purchase price allocation |  |  |  | $ 97,030 |  |  |
Cellero, LLC |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  | $ 1,500 |
Inventories |  |  |  |  |  | 551 |
Other current assets (excluding cash) |  |  |  |  |  | 182 |
Property, plant and equipment |  |  |  |  |  | 1,648 |
Goodwill |  |  |  |  |  | 19,457 |
Definite-lived intangible assets |  |  |  |  |  | 16,230 |
Other long-term assets |  |  |  |  |  | 849 |
Current liabilities |  |  |  |  |  | (1,360) |
Deferred tax liabilities |  |  |  |  |  | (1,467) |
Other long-term liabilities |  |  |  |  |  | (740) |
Total purchase price allocation |  |  |  |  |  | $ 36,850 |
HemaCare Corporation |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  | $ 6,451
Inventories |  |  |  |  |  |  | 8,468
Other current assets (excluding cash) |  |  |  |  |  |  | 3,494
Property, plant and equipment |  |  |  |  |  |  | 10,033
Goodwill |  |  |  |  |  |  | 210,196
Definite-lived intangible assets |  |  |  |  |  |  | 183,540
Other long-term assets |  |  |  |  |  |  | 5,920
Current liabilities |  |  |  |  |  |  | (5,188)
Deferred tax liabilities |  |  |  |  |  |  | (38,529)
Other long-term liabilities |  |  |  |  |  |  | (7,664)
Total purchase price allocation |  |  |  |  |  |  | $ 376,721

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