Rental Revenue (Details) - Sales Revenue, Net [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Concentration Risk, Percentage	4.00%			4.00%
Plano Facility [Member]
Concentration Risk, Percentage		6.00%		7.00%
Tennessee facilities [Member]
Concentration Risk, Percentage		5.00%
All Other Facilities [Member]
Concentration Risk, Percentage	47.00%	36.00%	54.00%	33.00%
Great Bend Facility [Member]
Concentration Risk, Percentage	5.00%	9.00%	5.00%	6.00%
Sherman facility [Member]
Concentration Risk, Percentage	6.00%		7.00%
Encompass facilities [Member]
Concentration Risk, Percentage	11.00%	21.00%	12.00%	25.00%
Austin Facility [Member]
Concentration Risk, Percentage	7.00%		7.00%
Dallas Facility [Member]
Concentration Risk, Percentage	6.00%
Belpre Facilities [Member]
Concentration Risk, Percentage	9.00%		5.00%
Omaha Facility [Member]
Concentration Risk, Percentage		6.00%	10.00%	8.00%
No Facilities Member [Member]
Concentration Risk, Percentage		4.00%	4.00%
Oklahoma Center for Orthopedic Multi-Specialty Surgery, LLC [Member]
Concentration Risk, Percentage	9.00%	17.00%		10.00%
Marina Facility [Member]
Concentration Risk, Percentage				5.00%