Fair Value Of Assets And Liabilities (Narrative) (Details)	12 Months Ended
Dec. 31, 2015 USD ($) number	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Fair Value Of Assets And Liabilities [Abstract]
Gain/(loss) on instrument specific credit risk \| $	$ 400,000	$ 2,800,000	$ (1,500,000)
Number of levels assets and liabilities are grouped in \| number	3

This item represents the estimated amount of gains or losses included in earnings during the period attributable to changes in instrument-specific credit risk arising from loans and other receivables held as assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612

Name:	us-gaap_FairValueOptionCreditRiskGainsLossesOnAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration