Real Property Acquisitions and Development (Details 2) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Development projects:
Total development projects	$ 333,320	$ 35,363
Expansion projects	2,798	2,879
Total construction in progress conversions	336,118	38,242
Triple Net [Member]
Development projects:
Total development projects	266,650	0
Seniors housing operating [Member]
Development projects:
Total development projects	3,634	0
Outpatient Medical [Member]
Development projects:
Total development projects	$ 63,036	$ 35,363