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v3.20.4

Acquisitions and Investments (Details) - USD ($) $ in Thousands | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Mar. 31, 2020 | Sep. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill | $ 243,347 |  |  | $ 239,724 | $ 214,489 | $ 199,873
Reference laboratory in Mid-West, U.S. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase price of acquired assets | $ 50,000 |  |  |  |  |
Net tangible liabilities |  | $ 200 |  |  |  |
Goodwill |  | 22,900 |  |  |  |
Software company |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Purchase price of acquired assets |  |  | $ 25,000 |  |  |
Net tangible liabilities |  |  | 300 |  |  |
Goodwill |  |  | 20,300 |  |  |
Customer relationships | Reference laboratory in Mid-West, U.S. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  | $ 26,900 |  |  |  |
Intangible assets useful life |  | 13 years 9 months 18 days |  |  |  |
Customer relationships | Software company |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | 2,400 |  |  |
Technology-based intangible assets | Software company |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Intangible assets |  |  | $ 2,600 |  |  |

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