Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) $ in Thousands	3 Months Ended
Dec. 31, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss) [Abstract]
Portfolio Method Reclassified From Accumulated Other Comprehensive Income Loss To Retained Earnings	$ 196

Portfolio Method Reclassified From Accumulated Other Comprehensive Income Loss To Retained Earnings

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration