Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (45,003,000)	$ (520,000)	$ 1,566,000
Unrealized gain (loss) on change in fair value of cash flow hedges	10,624,000	(11,878,000)	(14,286,000)
Comprehensive loss	(34,379,000)	(12,398,000)	(12,720,000)
Comprehensive income attributable to noncontrolling interests	(162,000)	(481,000)	(404,000)
Comprehensive loss attributable to Cedar Realty Trust, Inc.	$ (34,541,000)	$ (12,879,000)	$ (13,124,000)