Basis of Presentation and Significant Events (Immaterial Correction of an Error) (Details) - Shares Correction	3 Months Ended
Mar. 31, 2019 shares
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Common shares increased (in shares)	47,680
Treasury shares issued decrease (in shares)	368
Treasury shares reclassified (in shares)	25,542

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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