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BUSINESS COMBINATIONS - Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | Jan. 03, 2020 | Apr. 29, 2019
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HemaCare Corporation |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired | $ 183,540 |
Weighted-average amortization life | 18 years |
Citoxlab |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired |  | $ 162,400
Weighted-average amortization life |  | 12 years
Customer Relationships | HemaCare Corporation |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired | $ 170,390 |
Weighted-average amortization life | 19 years |
Customer Relationships | Citoxlab |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired |  | $ 134,600
Weighted-average amortization life |  | 13 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 | HemaCare Corporation |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired | $ 5,820 |
Weighted-average amortization life | 3 years |
Developed Technology | Citoxlab |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired |  | $ 19,900
Weighted-average amortization life |  | 3 years
Backlog | Citoxlab |  |
Business Acquisition [Line Items] |  |
Definite-lived intangible assets acquired |  | $ 7,900
Weighted-average amortization life |  | 1 year

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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