Notes Payable	6 Months Ended
Jun. 30, 2013
Debt Disclosure [Abstract]
Notes Payable	Notes Payable: In April 2013, NNN filed a prospectus supplement to the prospectus contained in its February 2012 shelf registration statement and issued $350,000,000 aggregate principal amount of 3.300% Notes due April 2023 (the “2023 Notes”). The 2023 Notes were sold at a discount with an aggregate purchase price of $347,406,000 with interest payable semi-annually commencing on October 15, 2013. The discount of $2,594,000 is being amortized to interest expense over the term of the note using the effective interest method. The effective interest rate for the 2023 Notes after accounting for note discount is 3.388%. NNN previously entered into four forward starting swaps with an aggregate notional amount of $240,000,000. Upon issuance of the 2023 Notes, NNN terminated the forward starting swaps resulting in a liability of $3,156,000, of which $3,141,000 was deferred in other comprehensive income. The deferred liability is being amortized to interest expense over the term of the 2023 Notes using the effective interest method. The 2023 Notes are senior unsecured obligations of NNN and are subordinated to all secured indebtedness and to the indebtedness and other liabilities of NNN's subsidiaries. Additionally, the 2023 Notes are redeemable at NNN's option, in whole or part anytime, for an amount equal to (i) the sum of the outstanding principal balance of the notes being redeemed plus accrued interest thereon to the redemption date, and (ii) the make whole amount, if any, as defined in the supplemental indenture dated April 9, 2013, relating to the 2023 Notes. NNN received approximately $344,266,000 of proceeds in connection with the issuance of the 2023 Notes, net of debt issuance cost totaling $5,734,000 consisting primarily of underwriting discounts and commissions, legal and accounting fees, rating agency fees and printing expenses.

Notes Payable:

In April 2013, NNN filed a prospectus supplement to the prospectus contained in its February 2012 shelf registration statement and issued $350,000,000 aggregate principal amount of 3.300% Notes due April 2023 (the “2023 Notes”). The 2023 Notes were sold at a discount with an aggregate purchase price of $347,406,000 with interest payable semi-annually commencing on October 15, 2013. The discount of $2,594,000 is being amortized to interest expense over the term of the note using the effective interest method. The effective interest rate for the 2023 Notes after accounting for note discount is 3.388%. NNN previously entered into four forward starting swaps with an aggregate notional amount of $240,000,000. Upon issuance of the 2023 Notes, NNN terminated the forward starting swaps resulting in a liability of $3,156,000, of which $3,141,000 was deferred in other comprehensive income. The deferred liability is being amortized to interest expense over the term of the 2023 Notes using the effective interest method.

The 2023 Notes are senior unsecured obligations of NNN and are subordinated to all secured indebtedness and to the indebtedness and other liabilities of NNN's subsidiaries. Additionally, the 2023 Notes are redeemable at NNN's option, in whole or part anytime, for an amount equal to (i) the sum of the outstanding principal balance of the notes being redeemed plus accrued interest thereon to the redemption date, and (ii) the make whole amount, if any, as defined in the supplemental indenture dated April 9, 2013, relating to the 2023 Notes.

NNN received approximately $344,266,000 of proceeds in connection with the issuance of the 2023 Notes, net of debt issuance cost totaling $5,734,000 consisting primarily of underwriting discounts and commissions, legal and accounting fees, rating agency fees and printing expenses.