Concentration of Risk - Narrative (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($) state facility bed
Concentration Risk [Line Items]
Number of living facilities	202
Description of highest concentration of properties	The four states in which Ensign leases the highest concentration of properties are California, Texas, Utah and Arizona.
Skilled Nursing, Assisted Living and Independent Living Facilities \| Assets Leased to Ensign
Concentration Risk [Line Items]
Number of living facilities	199
Number of units available in living facilities \| bed	19,668
Ensign
Concentration Risk [Line Items]
Number of states where Ensign leases the highest concentration of properties \| state	4
Ensign \| Skilled Nursing, Assisted Living and Independent Living Facilities \| Assets Leased to Ensign
Concentration Risk [Line Items]
Number of living facilities	93
Number of units available in living facilities \| bed	9,860
Ensign \| Customer Concentration Risk \| Rental Income
Concentration Risk [Line Items]
Annualized run-rate basis revenue \| $	$ 59.8
Concentration risk (percent)	40.00%

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Number of states where the entity's major tenants lease the highest concentration of properties.

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Number of licensed nursing center beds.

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Description of risks that arise due to concentrations of operating facilities, revenues, assets, customers, vendors or the like in a certain geographic area, either domestic or foreign. The description may address risks inherent in the geographic area, and, at a minimum, informs users of the general nature of the risk, but excludes "Information about Geographic Areas" that may be disclosed elsewhere (for instance, segment disclosures)..

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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