Real Property Acquisitions and Development (Details 2) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Development projects:
Total development projects	$ 68,648	$ 122,363
Expansion projects	2,879	38,808
Total construction in progress conversions	71,527	161,171
Triple Net [Member]
Development projects:
Total development projects	24,535	85,902
Seniors housing operating [Member]
Development projects:
Total development projects	0	19,869
Outpatient Medical [Member]
Development projects:
Total development projects	$ 44,113	$ 16,592