Real Estate Investments (Schedule of Allocation of Fair Value of Business Combinations) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015
Business Acquisition [Line Items]
Land	$ 19,469
Buildings and improvements	101,251
In-place leases	15,819
Tenant improvements	1,123
Above-market leases	635
Total assets acquired	138,297
Below-market leases	(870)
Total liabilities acquired	(870)
Net assets acquired	137,427
21st Century Oncology Portfolio [Member]
Business Acquisition [Line Items]
Land	17,489	$ 7,930
Buildings and improvements	85,833	87,586
In-place leases	13,006	$ 5,241
Tenant improvements	1,123
Above-market leases	635
Total assets acquired	118,086
Below-market leases	(870)
Total liabilities acquired	(870)
Net assets acquired	$ 117,216