Organization And Summary Of Significant Accounting Policies (Summary Of NNN's Investment Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 property sqft states	Mar. 31, 2013
Accounting Policies [Abstract]
Total properties	1,903
Gross leasable area (square feet)	20,632,000
States	47
Capitalized interest	$ 434	$ 219