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Commercial Mortgage Residual Interests (Schedule Of Amounts Recognized As Unrealized Gains And/Or Losses Recorded As Other Comprehensive Income And Other Than Temporary Valuation Impairments Recorded In Earnings) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Commercial Mortgage Residual Interests [Abstract] |  |  |
Unrealized gains | $ 1,132 | $ 0 | $ 1,272
Unrealized losses | 0 | 246 | 0
Other than temporary valuation impairment | $ 2,812 | $ 1,024 | $ 3,995

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- Definition Other comprehensive Income - Unrealized gain/loss on interest in financial instruments (typically securitized receivables) that continue to be held during the period. + References No definition available. + Details
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- Definition Other Comprehensive Income Unrealized Holding Loss On Residual Interest Of Securitization Arising During Period Net Of Tax + References No definition available. + Details
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- Definition The charge against earnings to reduce the carrying value of an interest continued to be held by the transferor in a securitized financial instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 40 -Section 35 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=16385214&loc=d3e44297-111616 + Details
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