CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
REVENUE
Rental income	$ 104,609	$ 115,651	$ 116,202
Management and other fee income	$ 2,446	$ 1,032	$ 293
Type of Revenue [Extensible List]	Management and Other Fee Income [Member]	Management and Other Fee Income [Member]	Management and Other Fee Income [Member]
Total revenue	$ 107,055	$ 116,683	$ 116,495
EXPENSES
Property operating	41,770	45,007	41,164
Real estate taxes	23,950	35,256	36,768
Depreciation and amortization	41,114	51,199	95,997
General and administrative	47,634	41,949	28,849
Litigation settlement	35,533
Total expenses	190,001	173,411	202,778
Gain on sale of real estate	211,936	221,681	88,555
(Loss) gain on sale of interests in unconsolidated entities	(677)		1,758
Impairment of real estate assets	(126,887)	(95,826)	(64,108)
Equity in loss of unconsolidated entities	(72,080)	(9,226)	(4,712)
Interest and other income	37,753	9,285	3,394
Interest expense	(86,730)	(107,975)	(91,316)
Loss before income taxes	(119,631)	(38,789)	(152,712)
Income tax expense	(466)	(196)	(252)
Net loss	(120,097)	(38,985)	(152,964)
Net loss attributable to non-controlling interests	46,152	10,836	47,938
Net loss attributable to Seritage	(73,945)	(28,149)	(105,026)
Preferred dividends	(4,900)	(4,900)	(4,900)
Net loss attributable to Seritage common shareholders	$ (78,845)	$ (33,049)	$ (109,926)
Net loss per share attributable to Seritage Class A common shareholders - Basic	$ (1.59)	$ (0.78)	$ (2.87)
Net loss per share attributable to Seritage Class A common shareholders - Diluted	$ (1.59)	$ (0.78)	$ (2.87)
Weighted average Class A common shares outstanding - Basic	49,729	42,393	38,298
Weighted average Class A common shares outstanding - Diluted	49,729	42,393	38,298