XML 54 R37.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Notes Payable - Convertible (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Convertible Notes Payable [Abstract] |
Debt Interest Expense | NNN recorded the following in interest expense relating to the 2028 Notes and the 2026 Notes for the year ended December 31 (dollars in thousands):
|  | 2013
Noncash interest charges |  | $ | 2,072 |
Contractual interest expense |  | 5,400 |
Amortization of debt costs |  | 566 |
|  | $ | 8,038 |

X
- Definition Schedule of Debt Instrument Interest Expense [Table Text Block] + References No definition available. + Details
Name: | nnn_ScheduleOfDebtInstrumentInterestExpenseTableTextBlock
Namespace Prefix: | nnn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ConvertibleLongtermNotesPayableCurrentAndNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration