Disclosure about Fair Value of Financial Instruments (Details 1) - USD ($)		Jun. 30, 2015		Dec. 31, 2014
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments		$ 43,326,000	[1]	$ 0
Foreign currency forward contracts	[2]	18,912,000
Redeemable OP unitholder interests		114,886,000		$ 46,722,000
Totals		177,124,000
Level 1 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	[1]	43,326,000
Totals		43,326,000
Level 2 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Foreign currency forward contracts	[2]	18,912,000
Redeemable OP unitholder interests		114,886,000
Totals		$ 133,798,000

[1] (1) Unrealized gains or losses on equity investments are recorded in accumulated other comprehensive income (loss) at each measurement date.

[2] (2) Please see Note 11 for additional information.