Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Accumulated dividends in excess of earnings	Accumulated other comprehensive income (loss)	Non- controlling interests	Officer	Officer Accumulated dividends in excess of earnings	Officer Non- controlling interests
Balance (in shares) at Dec. 31, 2022		124,538,811
Balance at Dec. 31, 2022	$ 1,384,598	$ 12	$ 1,612,126	$ (315,984)	$ 14	$ 88,430
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under the Equity Incentive Plan (in shares)		697,691
Shares issued under the Equity Incentive Plan	32		32
Shares withheld for employee taxes (in shares)		(211,615)
Shares withheld for employee taxes	(3,181)		(3,181)
Stock based compensation expense	2,927		2,840			87
Adjustment to non-controlling interests ownership in Operating Partnership	0		343			(343)
Registration expenditures	(10)		(10)
Cash dividends	(20,020)			(18,753)		(1,267)	$ (143)	$ (91)	$ (52)
Net income attributable to Retail Opportunity Investments Corp.	8,142			8,142
Net income attributable to non-controlling interests	554					554
Other comprehensive income (loss)	(5)				(5)	0
Balance (in shares) at Mar. 31, 2023		125,024,887
Balance at Mar. 31, 2023	$ 1,372,894	$ 12	1,612,150	(326,686)	9	87,409
Balance (in shares) at Dec. 31, 2023	126,904,085	126,904,085
Balance at Dec. 31, 2023	$ 1,363,207	$ 13	1,643,908	(357,160)	559	75,887
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under the Equity Incentive Plan (in shares)		810,507
Shares issued under the Equity Incentive Plan	0		0
Shares withheld for employee taxes (in shares)		(251,738)
Shares withheld for employee taxes	(3,532)		(3,532)
Cancellation of restricted stock (in shares)		(5,000)
Stock based compensation expense	2,787		1,861			926
Adjustment to non-controlling interests ownership in Operating Partnership	0		1,096			(1,096)
Registration expenditures	(33)		(33)
Cash dividends	(20,234)			(19,118)		(1,116)	$ (174)	$ (40)	$ (134)
Net income attributable to Retail Opportunity Investments Corp.	11,018			11,018
Net income attributable to non-controlling interests	647					647
Other comprehensive income (loss)	$ (40)				(38)	(2)
Balance (in shares) at Mar. 31, 2024	127,457,854	127,457,854
Balance at Mar. 31, 2024	$ 1,353,646	$ 13	$ 1,643,300	$ (365,300)	$ 521	$ 75,112