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Employee Benefit Plan | 12 Months Ended
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Dec. 31, 2017
Retirement Benefits [Abstract] |
Employee Benefit Plan | Employee Benefit Plan: Effective January 1, 1998, NNN adopted a defined contribution retirement plan (the “Retirement Plan”) covering substantially all of the employees of NNN. The Retirement Plan permits participants to defer a portion of their compensation, as defined in the Retirement Plan, subject to limits established by the Code. NNN generally matches 60 percent of the first eight percent of a participant’s contributions. Additionally, NNN may make discretionary contributions. NNN’s contributions to the Retirement Plan for the years ended December 31, 2017, 2016 and 2015 totaled $514,000, $491,000 and $474,000, respectively.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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