Consolidated Statement Of Equity - USD ($)	Total	Limited Partners' OP Units [Member]	Preferred Stock [Member]	Preferred Stock [Member] Series C [Member]	Preferred Stock [Member] Series B [Member]	Common Stock [Member]	Treasury Stock, At Cost [Member]	Additional Paid-In Capital [Member]	Additional Paid-In Capital [Member] Series C [Member]	Additional Paid-In Capital [Member] Series B [Member]	Cumulative Distributions In Excess Of Net Income [Member]	Cumulative Distributions In Excess Of Net Income [Member] Series B [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Cedar Shopping Centers, Inc. [Member]	Cedar Shopping Centers, Inc. [Member] Series C [Member]	Cedar Shopping Centers, Inc. [Member] Series B [Member]	Minority Interests In Consolidated Joint Ventures [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2015	$ 597,542,000	$ 2,462,000	$ 190,661,000			$ 5,103,000	$ (17,284,000)	$ 825,979,000			$ (404,350,000)		$ (4,059,000)	$ 596,050,000			$ (970,000)	$ 1,492,000
Balance, shares at Dec. 31, 2015			7,950,000			85,049,000
Net income (loss)	8,764,000	(17,000)									8,943,000			8,943,000			(162,000)	(179,000)
Unrealized gain on change in fair value of cash flow hedges	4,901,000	24,000											4,877,000	4,877,000				24,000
Share-based compensation, net	2,468,000					$ 16,000	(845,000)	3,297,000						2,468,000
Share-based compensation, net, shares						261,000
Common stock sales, net of issuance expenses	(142,000)							(142,000)						(142,000)
Common stock sales, net of issuance expenses, shares						6,000
Preferred stock dividends	(14,408,000)										(14,408,000)			(14,408,000)
Distributions to common shareholders/noncontrolling interests	(17,120,000)	(71,000)									(17,049,000)			(17,049,000)				(71,000)
Redemptions of OP Units	(8,000)	(8,000)																(8,000)
Reallocation adjustment of limited partners' interest		(1,000)						392,000					(391,000)	1,000				(1,000)
Balance at Dec. 31, 2016	581,997,000	2,389,000	$ 190,661,000			$ 5,119,000	(18,129,000)	829,526,000			(426,864,000)		427,000	580,740,000			(1,132,000)	1,257,000
Balance, shares at Dec. 31, 2016			7,950,000			85,316,000
Net income (loss)	19,653,000	(13,000)									19,143,000			19,143,000			523,000	510,000
Unrealized gain on change in fair value of cash flow hedges	5,287,000	20,000											5,267,000	5,267,000				20,000
Share-based compensation, net	3,513,000					$ 15,000	(334,000)	3,832,000						3,513,000
Share-based compensation, net, shares						249,000
Net proceeds from sales of Series C Shares	120,432,000			$ 124,774,000					$ (4,342,000)						$ 120,432,000
Net proceeds from sales of Series C Shares, Shares				5,000,000
Redemptions of Series B Shares	(112,510,000)		$ (107,927,000)					3,307,000			(7,890,000)			(112,510,000)
Redemptions of Series B Shares, Shares			(4,500,000)
Common stock sales, net of issuance expenses	43,166,000					$ 345,000		42,821,000						43,166,000
Common stock sales, net of issuance expenses, shares						5,752,000
Preferred stock dividends	(13,652,000)										(13,652,000)			(13,652,000)
Distributions to common shareholders/noncontrolling interests	(17,751,000)	(70,000)									(17,681,000)			(17,681,000)				(70,000)
Redemptions of OP Units	(24,000)	(24,000)																(24,000)
Reallocation adjustment of limited partners' interest		82,000						(82,000)						(82,000)				82,000
Balance at Dec. 31, 2017	630,111,000	2,384,000	$ 207,508,000			$ 5,479,000	(18,463,000)	875,062,000			(446,944,000)		5,694,000	628,336,000			(609,000)	1,775,000
Balance, shares at Dec. 31, 2017			8,450,000			91,317,000
Net income (loss)	4,358,000	(28,000)									3,889,000			3,889,000			497,000	469,000
Unrealized gain on change in fair value of cash flow hedges	1,518,000	21,000											1,497,000	1,497,000				21,000
Share-based compensation, net	3,351,000					$ (7,000)	1,891,000	1,467,000						3,351,000
Share-based compensation, net, shares						(111,000)
Redemptions of Series B Shares	(50,016,000)				$ (47,967,000)					$ 1,458,000		$ (3,507,000)				$ (50,016,000)
Redemptions of Series B Shares, Shares					(2,000,000)
Common stock sales, net of issuance expenses	9,000							9,000						9,000
Common stock sales, net of issuance expenses, shares						2,000
Common stock repurchases	(2,329,000)					$ (46,000)		(2,283,000)						(2,329,000)
Common stock repurchases. Shares						(772,000)
Preferred stock dividends	(10,863,000)										(10,863,000)			(10,863,000)
Distributions to common shareholders/noncontrolling interests	(18,391,000)	(90,000)									(18,301,000)			(18,301,000)				(90,000)
Redemptions of OP Units	(7,000)	(7,000)																(7,000)
Issuance of OP Units	975,000	975,000																975,000
Reallocation adjustment of limited partners' interest		148,000						(148,000)						(148,000)				148,000
Balance at Dec. 31, 2018	$ 558,716,000	$ 3,403,000	$ 159,541,000			$ 5,426,000	$ (16,572,000)	$ 875,565,000			$ (475,726,000)		$ 7,191,000	$ 555,425,000			$ (112,000)	$ 3,291,000
Balance, shares at Dec. 31, 2018			6,450,000			90,436,000