Organization (Details)		6 Months Ended	12 Months Ended
	Oct. 15, 2018 property	Jun. 30, 2017 business	Dec. 31, 2016 business	Dec. 31, 2018 jurisdiction facility
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of facilities the entity owned, managed, or had ownership interests in | facility				40
Number of jurisdictions in which the entity operates | jurisdiction				18
Pinnacle
Business Acquisition [Line Items]
Number of properties acquired | property	12
Other acquisitions
Business Acquisition [Line Items]
Number of businesses acquired | business		2	2