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Mortgage Loans on Real Estate Schedule of Impaired Financing Receivables (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 Months | Dec. 31, 2012
Financing Receivable, Impaired [Line Items] |  |
Impaired Mortgage Loans, Workout Terms, Interest Only Payments, Six Month Terms | 6 |
Impaired Mortgage Loans, Workout Terms, Interest Only Payments, Twelve Month Terms | 12 |
Impaired Mortgage Loans, Workout Terms, Cash Flow Sweep, Number of Months | 12 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment | $ 23,887 | $ 29,976
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 20,413 | 27,765
Impaired Financing Receivable, Recorded Investment | 44,300 | 57,741
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance | 46,518 | 53,110
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 20,413 | 27,765
Impaired Financing Receivable, Unpaid Principal Balance | 66,931 | 80,875
Impaired Financing Receivable, Related Allowance | (22,631) | (23,134)
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 28,384 | 37,480
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 20,505 | 27,696
Impaired Financing Receivable, Average Recorded Investment | 48,889 | 65,176
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | 331 | 1,946
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | 284 | 1,664
Impaired Financing Receivable, Interest Income, Accrual Method | $ 615 | $ 3,610

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- Definition Circumstances in which borrowers pay a protion of their loan payment into an escrow account that can be used for capital and tenant improvements of a period not more than 12 months. + References No definition available. + Details
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- Definition Loan workout terms in which a borrower makes interest only payments on the commerical mortgage loan. + References No definition available. + Details
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- Definition Loan workout terms in which a borrower makes interest only payments on the commerical mortgage loan. + References No definition available. + Details
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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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