Organization And Summary Of Significant Accounting Policies (Summary Of NNN's Investment Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013 properties sqft states	Jun. 30, 2012	Jun. 30, 2013 properties sqft states	Jun. 30, 2012
Accounting Policies [Abstract]
Total properties	1,838		1,838
Gross leasable area (square feet)	20,218,000		20,218,000
States	47		47
Capitalized interest	$ 321	$ 436	$ 540	$ 868