Equity Investments in Real Estate (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	$ 2,172	$ 3,215
Equity Earnings from Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	3,420	3,270
Amortization of Basis Differences on Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	(1,248)	(55)
Net Lease | Equity Earnings from Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	3,552	3,717
Net Lease | Amortization of Basis Differences on Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	(820)	196
Self-Storage | Equity Earnings from Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	(394)	(439)
Self-Storage | Amortization of Basis Differences on Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	(39)	(39)
All Other | Equity Earnings from Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	262	(8)
All Other | Amortization of Basis Differences on Equity Investments:
Schedule of Equity Method Investments
Equity in earnings of equity method investments in real estate	$ (389)	$ (212)