Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]: Share-based Compensation, Option and Incentive Plans Policy (Policies)	12 Months Ended
Dec. 31, 2017
Policies
Share-based Compensation, Option and Incentive Plans Policy	Compensation costs for liability-classified awards, such as share appreciation rights (“SARs”), are measured and accrued each reporting period in the Consolidated Statements of Income as the requisite service or performance conditions are met.

Disclosure of accounting policy for stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b),(f)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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