Quarterly report pursuant to Section 13 or 15(d)

Organization, Consolidation, And Basis Of Presentation (Narrative) (Details)

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Organization, Consolidation, And Basis Of Presentation (Narrative) (Details)
3 Months Ended
Mar. 31, 2018
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Organization, Consolidation, And Basis Of Presentation [Abstract]  
Geographic regions 2
Sub-geographical regions 3