Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,566,000	$ 4,358,000	$ 19,653,000
Other comprehensive income - unrealized (loss) gain on change in fair value of cash flow hedges	(14,286,000)	1,518,000	5,287,000
Comprehensive (loss) income	(12,720,000)	5,876,000	24,940,000
Comprehensive (income) attributable to noncontrolling interests	(404,000)	(490,000)	(530,000)
Comprehensive (loss) income attributable to Cedar Realty Trust, Inc.	$ (13,124,000)	$ 5,386,000	$ 24,410,000