Consolidated Statements Of Comprehensive Income (Loss) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 6,417,000	$ (761,000)	$ 13,973,000	$ 5,610,000
Other comprehensive income - unrealized gain (loss) on change in fair value of cash flow hedges	1,279,000	2,506,000	1,591,000	(7,060,000)
Comprehensive income (loss)	7,696,000	1,745,000	15,564,000	(1,450,000)
Comprehensive (income) loss attributable to noncontrolling interests	(122,000)	59,000	(377,000)	279,000
Comprehensive income (loss) attributable to Cedar Realty Trust, Inc.	$ 7,574,000	$ 1,804,000	$ 15,187,000	$ (1,171,000)