Consolidated Statements Of Comprehensive Income (Loss) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 9,937,000	$ (4,389,000)	$ (6,683,000)	$ 7,556,000
Other comprehensive income - unrealized gain (loss) on change in fair value of cash flow hedges	1,937,000	(1,028,000)	7,827,000	312,000
Comprehensive income (loss)	11,874,000	(5,417,000)	1,144,000	7,868,000
Comprehensive (income) attributable to noncontrolling interests	(167,000)	(81,000)	(237,000)	(255,000)
Comprehensive income (loss) attributable to Cedar Realty Trust, Inc.	$ 11,707,000	$ (5,498,000)	$ 907,000	$ 7,613,000