Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Total revenue	$ 86,937	$ 85,747	$ 91,736	$ 89,763	$ 88,919	$ 87,138	$ 92,649	$ 90,112	$ 354,184	$ 358,819	$ 354,122
Gains on sale of operating properties, net	(4,725)	(177)	7,829	500	0	0	6,290	8,870	3,424	15,160	4,253
Operating income (loss)	(13,757)	20,549	15,771	(1,532)	19,312	16,229	27,376	16,988	21,031	79,905	69,676
Consolidated net income (loss)	(31,709)	4,317	(1,062)	(17,997)	2,795	(204)	10,858	437	$ (46,451)	$ 13,888	$ 3,116
Net income (loss) attributable to Kite Realty Group Trust common shareholders	$ (31,221)	$ 3,938	$ (1,366)	$ (17,917)	$ 2,309	$ (622)	$ 10,180	$ 5
Net income (loss) per common share – basic and diluted (in dollars per share)	$ (0.37)	$ 0.05	$ (0.02)	$ (0.21)	$ 0.03	$ (0.01)	$ 0.12	$ 0.00
Weighted average Common Shares outstanding - basic (in shares)	83,762,664	83,706,704	83,672,896	83,629,669	83,595,677	83,594,163	83,585,736	83,565,325	83,693,385	83,585,333	83,436,511
Weighted average Common Shares outstanding - diluted (in shares)	83,762,664	83,767,655	83,672,896	83,629,669	83,705,764	83,594,163	83,652,627	83,643,608	83,693,385	83,690,418	83,465,500