Consolidated Statements Of Cash Flows (Parenthetical)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Cash Flows [Abstract]
Issued shares of common stock pursuant to conversion premium	2,407,911
Issued shares of restricted and unrestricted common stock, pursuant to NNN's performance incentive plan	371,434	298,896	398,578
Issued shares of common stock, to directors pursuant to NNN's performance incentive plan	14,999	16,605	16,078
Issued shares of common stock, pursuant to NNN's Deferred Director Fee Plan	16,016	12,308	19,212
Surrender of shares of restricted stock		241	15,286