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v2.4.1.9

Real Estate (Held For Sale) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 property | Dec. 31, 2013 property | Dec. 31, 2012 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Number of Properties classified as held for sale | 7 nnn_NumberOfPropertiesClassifiedAsHeldForSale | 8 nnn_NumberOfPropertiesClassifiedAsHeldForSale |
Land and improvements | 3,246 us-gaap_InventoryLandHeldForSale | 5,751 us-gaap_InventoryLandHeldForSale |
Building and improvements | 4,644 nnn_InventoryBuildingHeldForSale | 8,067 nnn_InventoryBuildingHeldForSale |
Real Estate Held-for-sale | 7,890 us-gaap_RealEstateHeldforsale | 13,818 us-gaap_RealEstateHeldforsale |
Less impairment | (1,022)nnn_AccumulatedImpairmentRealEstateHeldForSale | (2,132)nnn_AccumulatedImpairmentRealEstateHeldForSale |
Inventory, Real Estate, Held-for-sale | 5,395 us-gaap_InventoryRealEstateHeldForSale | 9,324 us-gaap_InventoryRealEstateHeldForSale |
Assets Held-for-sale |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Less accumulated depreciation and amortization | (1,473)us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = us-gaap_AssetsHeldForSaleMember | (2,362)us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = us-gaap_AssetsHeldForSaleMember |
Assets Held-for-sale | Discontinued operations |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Number of sold properties | 2 nnn_NumberOfDisposedPropertiesDiscontinuedOperations / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = us-gaap_AssetsHeldForSaleMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | 35 nnn_NumberOfDisposedPropertiesDiscontinuedOperations / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = us-gaap_AssetsHeldForSaleMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | 34 nnn_NumberOfDisposedPropertiesDiscontinuedOperations / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = us-gaap_AssetsHeldForSaleMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember

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- Definition Accumulated Impairment Real Estate Held For Sale + References No definition available. + Details
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- Definition Inventory, Building, Held-for-sale + References No definition available. + Details
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- Definition Number Of Disposed Properties Discontinued Operations + References No definition available. + Details
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- Definition Number Of Properties Classified As Held For Sale + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 + Details
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- Definition Represents properties which were acquired directly or through foreclosure for which a committed plan to sell exists and an active program to market such properties has been initiated. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The cumulative amount of depreciation for real estate property held for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(3)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 7 + Details
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