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Discontinued Operations (Schedule Of Estimated Timing Of Payments Of Liabilities) (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Discontinued Operations [Abstract]
2023	$ 826
2024	300
Thereafter	599
Estimated payments of liabilities related to discontinued operations	$ 1,725

X

- Definition

Payment of liabilities, discounted operations, thereafter

+ References

No definition available.

+ Details

Name:	che_PaymentOfLiabilitiesDiscountedOperationsThereafter
Namespace Prefix:	che_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Payment of liabilities, discounted operations, year one

+ References

No definition available.

+ Details

Name:	che_PaymentOfLiabilitiesDiscountedOperationsYearOne
Namespace Prefix:	che_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Payment of liabilities, discounted operations, year two

+ References

No definition available.

+ Details

Name:	che_PaymentOfLiabilitiesDiscountedOperationsYearTwo
Namespace Prefix:	che_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Total estimated timing of payments of liabilities related to discontinued operations.

+ References

No definition available.

+ Details

Name:	che_TotalEstimatedTimingOfPaymentsOfLiabilitiesRelatedToDiscontinuedOperations
Namespace Prefix:	che_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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