Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2018
Summary of significant accounting policies [Abstract]
Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES There have been no material changes to our significant accounting policies as reported in our 2017 Annual Report.

The entire disclosure for all significant accounting policies of the reporting entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-URI http://asc.fasb.org/topic&trid=2122369

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