Independent Contractor Operations (Schedule Of Independent Contractors) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Independent Contractor Operations [Abstract]
Revenues	$ 9,770	$ 9,527	$ 19,629	$ 18,991
Pretax profits	$ 6,024	$ 5,661	$ 12,180	$ 11,218

Net service revenues attributable to the independent contractors.

No definition available.

Name:	che_RevenuesFromIndependentContractors
Namespace Prefix:	che_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration