EARNINGS PER SHARE AND UNIT (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net income attributable to common shareholders	$ (5,605)	$ 54,040	$ 74,630	$ 106,148
Less: (Earnings) loss allocated to unvested participating securities	4	(43)	(50)	(89)
Net income (loss) available for common shareholders - basic	(5,601)	53,997	74,580	106,059
OP and LTIP units	0	0	0	5,883
Net income (loss) available for common shareholders - dilutive	$ (5,601)	$ 53,997	$ 74,580	$ 111,942
Denominator:
Weighted average common shares outstanding - basic (in shares)	116,625	121,087	118,033	119,259
Effect of dilutive securities:
Assumed conversion of OP and LTIP units (in shares)	0	0	0	7,128
Weighted average common shares outstanding - diluted (in shares)	116,625	121,183	118,111	126,489
Earnings per share available to common shareholders:
Earnings per common share - Basic (in dollars per share)	$ (0.05)	$ 0.45	$ 0.63	$ 0.89
Earnings per common share - Diluted (in dollars per share)	$ (0.05)	$ 0.45	$ 0.63	$ 0.89
Urban Edge Properties LP
Numerator:
Net income attributable to common shareholders	$ (5,830)	$ 56,702	$ 78,003	$ 112,683
Less: (Earnings) loss allocated to unvested participating securities	4	(43)	(50)	(89)
Net income (loss) available for common shareholders - basic	$ (5,826)	$ 56,659	$ 77,953	$ 112,594
Denominator:
Weighted average common shares outstanding - basic (in shares)	120,618	126,277	122,332	126,387
Effect of dilutive securities:
Stock options using treasure stock method and restricted stock awards (in shares)	0	96	78	102
Assumed conversion of OP and LTIP units (in shares)	0	0	764	1
Weighted average common shares outstanding - diluted (in shares)	120,618	126,373	123,174	126,490
Earnings per share available to common shareholders:
Earnings per common share - Basic (in dollars per share)	$ (0.05)	$ 0.45	$ 0.64	$ 0.89
Earnings per common share - Diluted (in dollars per share)	$ (0.05)	$ 0.45	$ 0.63	$ 0.89
Restricted share expense
Effect of dilutive securities:
Stock options using treasure stock method and restricted stock awards (in shares)	0	96	78	102