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v2.4.1.9

Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Receivables allowance | $ 1,887 us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables | $ 1,784 us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables
Accrued rental income allowance | 3,086 nnn_AllowanceRentalIncome | 3,086 nnn_AllowanceRentalIncome
Debt costs accumulated amortization | 13,787 us-gaap_AccumulatedAmortizationDeferredFinanceCosts | 14,353 us-gaap_AccumulatedAmortizationDeferredFinanceCosts
Unamortized premium - mortgages payable | 839 us-gaap_DebtInstrumentUnamortizedPremium | 890 us-gaap_DebtInstrumentUnamortizedPremium
Unamortized discount - notes payable | $ 9,968 us-gaap_DebtInstrumentUnamortizedDiscount | $ 10,285 us-gaap_DebtInstrumentUnamortizedDiscount
Preferred stock, par value (in dollars per share) | $ 0.01 us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.01 us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized (in shares) | 15,000,000 us-gaap_PreferredStockSharesAuthorized | 15,000,000 us-gaap_PreferredStockSharesAuthorized
Common stock, par value (in dollars per share) | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.01 us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) | 375,000,000 us-gaap_CommonStockSharesAuthorized | 375,000,000 us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) | 133,446,857 us-gaap_CommonStockSharesIssued | 132,010,104 us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) | 133,446,857 us-gaap_CommonStockSharesOutstanding | 132,010,104 us-gaap_CommonStockSharesOutstanding
Series D |  |
Dividend rate | 6.625%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember | 6.625%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember
Preferred stock, depositary shares issued (in shares) | 115,000 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember | 115,000 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember
Preferred stock, depositary shares outstanding (in shares) | 115,000 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember | 115,000 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember
Preferred stock, stated liquidation value per share (in dollars per share) | $ 2,500 us-gaap_PreferredStockLiquidationPreference / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember | $ 2,500 us-gaap_PreferredStockLiquidationPreference / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember
Series E |  |
Dividend rate | 5.70%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember | 5.70%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember
Preferred stock, depositary shares issued (in shares) | 115,000 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember | 115,000 us-gaap_PreferredStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember
Preferred stock, depositary shares outstanding (in shares) | 115,000 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember | 115,000 us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember
Preferred stock, stated liquidation value per share (in dollars per share) | $ 2,500 us-gaap_PreferredStockLiquidationPreference / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember | $ 2,500 us-gaap_PreferredStockLiquidationPreference / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesEPreferredStockMember

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