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Notes Receivable - Loans Receivable on Real Estate (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Receivables [Abstract] |  |  |
Balance at January 1 | $ 72,218 ddr_MortgageLoansReceivableBalance | $ 60,378 ddr_MortgageLoansReceivableBalance |
Additions: |  |  |
New mortgage loans | 0 ddr_NewMortgageLoans | 26,508 ddr_NewMortgageLoans |
Interest | 810 ddr_MortgageLoansOnRealEstateInterest | 773 ddr_MortgageLoansOnRealEstateInterest |
Accretion of discount | 926 us-gaap_AccretionOfDiscount | 874 us-gaap_AccretionOfDiscount |
Deductions: |  |  |
Payments of principal and interest | (460)ddr_PaymentsOfPrincipalAndInterest | (16,315)ddr_PaymentsOfPrincipalAndInterest |
Loan loss reserve | (500)us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 | 0 us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 | (4,300)us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1
Other | (20,550)us-gaap_MortgageLoansOnRealEstateOtherDeductions | 0 us-gaap_MortgageLoansOnRealEstateOtherDeductions |
Balance at December 31 | $ 52,444 ddr_MortgageLoansReceivableBalance | $ 72,218 ddr_MortgageLoansReceivableBalance |

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- Definition Mortgage loans on real estate interest. + References No definition available. + Details
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- Definition Amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position related to mortgage loans receivable. + References No definition available. + Details
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- Definition Total amount of new mortgage loans during the reporting period. + References No definition available. + Details
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- Definition Payments of principal and interest. + References No definition available. + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition The amount of reductions in principal on mortgage loans other than foreclosures, costs of mortgages sold, and amortization of premium during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of reserve for write-down of a mortgage loan on real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.7) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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