Organization And Summary Of Significant Accounting Policies (Summary Of NNN's Investment Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 properties sqft states	Sep. 30, 2012	Sep. 30, 2013 properties sqft states	Sep. 30, 2012
Accounting Policies [Abstract]
Total properties	1,850		1,850
Gross leasable area (square feet)	20,292,000		20,292,000
States	47		47
Capitalized interest	$ 470	$ 336	$ 1,010	$ 1,204