Disclosure about Fair Value of Financial Instruments (Details 1) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Equity securities, carrying amount	$ 21,903	$ 7,269
Foreign currency forward contracts	50,853
Redeemable OP unitholder interests	97,476
Totals	170,232
Level 1
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Equity securities, carrying amount	21,903
Foreign currency forward contracts	0
Redeemable OP unitholder interests	0
Totals	21,903
Level 2
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Equity securities, carrying amount	0
Foreign currency forward contracts	50,853
Redeemable OP unitholder interests	97,476
Totals	148,329
Level 3
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Equity securities, carrying amount	0
Foreign currency forward contracts	0
Redeemable OP unitholder interests	0
Totals	$ 0

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- Definition

Fair value as of the balance sheet date of all derivatives designated as foreign currency fair value hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

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- Definition

For an unclassified balance sheet, this item represents investments in common and preferred stocks and other forms of securities that provide ownership interests in a corporation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(b))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Fair value assets and liabilities measured on recurring basis.

+ References

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- Definition

Redeemable OP Unit holder Interests

+ References

No definition available.

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