Real Property Acquisitions and Development (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Development projects:
Total development projects	$ 187,004	$ 35,363
Total construction in progress conversions	187,004	35,363
Triple Net [Member]
Development projects:
Total development projects	157,460	0
Seniors housing operating [Member]
Development projects:
Total development projects	3,634	0
Outpatient Medical [Member]
Development projects:
Total development projects	$ 25,910	$ 35,363