Real Property Acquisitions and Development (Details 2) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Development projects:
Total development projects	$ 35,363	$ 109,236
Expansion projects	2,879	38,808
Total construction in progress conversions	38,242	148,044
Triple Net [Member]
Development projects:
Total development projects	0	72,775
Seniors housing operating [Member]
Development projects:
Total development projects	0	19,869
Outpatient Medical [Member]
Development projects:
Total development projects	$ 35,363	$ 16,592