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Segment reporting - Summary of Assets by Segment (Phantom) (Detail) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Equity method and other investments | $ 255,489 | $ 241,983
U.S. dialysis |  |
Segment Reporting Information [Line Items] |  |
Equity method and other investments | 130,732 | 124,188
Other—Ancillary services |  |
Segment Reporting Information [Line Items] |  |
Equity method and other investments | $ 124,757 | $ 117,795

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- Details
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