Commitments and Contingencies Revenue Recoupments (Details)	Dec. 31, 2018 facilities
Probe Reviews [Abstract]
Facilities under Medicare Probe Reviews	16

Facilities under Medicare Probe reviews relating to Medicare services, billings and potential overpayments

No definition available.

Name:	ensg_FacilitiesunderMedicareProbeReviews
Namespace Prefix:	ensg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant