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Legal And Regulatory Matters (Narrative) (Details) | Oct. 16, 2020 item
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VITAS [Member] |
Loss Contingencies [Line Items] |
Number of Patients | 32

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- Definition The number of patient records selected by the Office of the Inspector General related to regulatory matters. + References No definition available. + Details
Name: | che_NumberOfPatients
Namespace Prefix: | che_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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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
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_LitigationCaseAxis=che_VitasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |