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Commitments and Contingencies - Additional Information (Detail) $ in Thousands |  | 1 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 15, 2017 legal_matter | Dec. 31, 2017 USD ($) | Sep. 30, 2021 USD ($)
Commitments and Contingencies: |  |  |
Corporate Integrity Agreement Period |  |  | 5 years
Corporate Integrity Agreement Expiration Date |  |  | Oct. 22, 2019
Commitments to provide operating capital |  |  |
Commitments and Contingencies: |  |  |
Other potential commitments to provide operating capital to several dialysis centers |  |  | $ 11,100
US Attorney Prescription Drug Investigation |  |  |
Commitments and Contingencies: |  |  |
Litigation Settlement, Amount Awarded to Other Party |  | $ 63,700 |
Stockholder Derivative Litigation |  |  |
Commitments and Contingencies: |  |  |
Loss Contingency Number of Previously Disclosed Lawsuits Consolidated Into One | legal_matter | 3 |  |
Incremental Cash Portion | US Attorney Prescription Drug Investigation |  |  |
Commitments and Contingencies: |  |  |
Litigation Settlement, Amount Awarded to Other Party |  | 41,500 |
Cash Paid For Portion Previously Refunded | US Attorney Prescription Drug Investigation |  |  |
Commitments and Contingencies: |  |  |
Litigation Settlement, Amount Awarded to Other Party |  | $ 22,200 |

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- Definition Corporate Integrity Agreement Expiration Date, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Corporate Integrity Agreement Period, in PnYnMnDn format. + References No definition available. + Details
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- Definition Loss Contingency Number of Lawsuits Consolidated Into One. + References No definition available. + Details
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- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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