Consolidated Statements of Partners' Capital - USD ($) $ in Thousands		Total	Retail Opportunity Investments Partnership L.P.	Retail Opportunity Investments Partnership L.P. Officer	Retail Opportunity Investments Partnership L.P. Limited Partner’s Capital	[1]	Retail Opportunity Investments Partnership L.P. Limited Partner’s Capital Officer	[1]	Retail Opportunity Investments Partnership L.P. ROIC Capital		Retail Opportunity Investments Partnership L.P. ROIC Capital Officer	[2]	Retail Opportunity Investments Partnership L.P. Accumulated other comprehensive income (loss)
Balance (in shares) at Dec. 31, 2022					8,447,117				124,538,811	[2]
Balance at Dec. 31, 2022			$ 1,384,598		$ 88,429				$ 1,296,154	[2]			$ 15
Increase (Decrease) in Partners' Capital [Roll Forward]
OP units issued under the Equity Incentive Plan (in shares)	[2]								697,691
OP Units issued under the Equity Incentive Plan		$ 32	32						$ 32	[2]
OP Units withheld for employee taxes (in shares)	[2]								(211,615)
OP Units withheld for employee taxes		(3,181)	(3,181)						$ (3,181)	[2]
Stock based compensation expense		2,927	2,927		87				2,840	[2]
Adjustment to non-controlling interests ownership in Operating Partnership		0	0		(343)				343	[2]
Registration expenditures		(10)	(10)						(10)	[2]
Cash distributions			(20,020)	$ (143)	(1,267)		$ (52)		(18,753)	[2]	$ (91)
Net income attributable to Retail Opportunity Investments Partnership, LP			8,696		$ 554				$ 8,142	[2]
Other comprehensive income (loss)		(5)	(5)										(5)
Balance (in shares) at Mar. 31, 2023					8,447,117				125,024,887	[2]
Balance at Mar. 31, 2023			1,372,894		$ 87,408				$ 1,285,476	[2]			10
Balance (in shares) at Dec. 31, 2022					8,447,117				124,538,811	[2]
Balance at Dec. 31, 2022			1,384,598		$ 88,429				$ 1,296,154	[2]			15
Increase (Decrease) in Partners' Capital [Roll Forward]
Equity redemption of OP Units		13,389	13,389
Net income attributable to Retail Opportunity Investments Partnership, LP		19,214	19,214
Balance (in shares) at Jun. 30, 2023					7,437,117				126,003,795	[2]
Balance at Jun. 30, 2023			1,367,931		$ 76,590				$ 1,289,925	[2]			1,416
Balance (in shares) at Mar. 31, 2023					8,447,117				125,024,887	[2]
Balance at Mar. 31, 2023			1,372,894		$ 87,408				$ 1,285,476	[2]			10
Increase (Decrease) in Partners' Capital [Roll Forward]
OP units issued under the Equity Incentive Plan (in shares)	[2]								1,000
OP Units issued under the Equity Incentive Plan		0	0						$ 0	[2]
OP Units withheld for employee taxes (in shares)	[2]								(8,667)
OP Units withheld for employee taxes		(110)	(110)						$ (110)	[2]
Cancellation of OP Units (in shares)	[2]								(23,425)
Stock based compensation expense		3,430	3,430		$ 669				$ 2,761	[2]
Equity Redemption of OP Units (in shares)					(1,010,000)				1,010,000	[2]
Equity redemption of OP Units			0		$ (13,389)				$ 13,389	[2]
Adjustment to non-controlling interests ownership in Operating Partnership		0	0		2,486				(2,486)	[2]
Registration expenditures		(36)	(36)						(36)	[2]
Cash distributions			(20,015)	(156)	(1,116)		(57)		(18,899)	[2]	(99)
Net income attributable to Retail Opportunity Investments Partnership, LP		10,518	10,518		$ 589				$ 9,929	[2]
Other comprehensive income (loss)		1,406	1,406										1,406
Balance (in shares) at Jun. 30, 2023					7,437,117				126,003,795	[2]
Balance at Jun. 30, 2023			1,367,931		$ 76,590				$ 1,289,925	[2]			1,416
Balance (in shares) at Dec. 31, 2023					7,437,117				126,904,085	[2]
Balance at Dec. 31, 2023			1,363,207		$ 75,854				$ 1,286,761	[2]			592
Increase (Decrease) in Partners' Capital [Roll Forward]
OP units issued under the Equity Incentive Plan (in shares)	[2]								810,507
OP Units issued under the Equity Incentive Plan		0
OP Units withheld for employee taxes (in shares)	[2]								(251,738)
OP Units withheld for employee taxes		(3,532)	(3,532)						$ (3,532)	[2]
Cancellation of OP Units (in shares)	[2]								(5,000)
Stock based compensation expense		2,787	2,787		926				$ 1,861	[2]
Adjustment to non-controlling interests ownership in Operating Partnership		0	0		(1,096)				1,096	[2]
Registration expenditures		(33)	(33)						(33)	[2]
Cash distributions			(20,234)	(174)	(1,116)		(134)		(19,118)	[2]	(40)
Net income attributable to Retail Opportunity Investments Partnership, LP			11,665		$ 647				$ 11,018	[2]
Other comprehensive income (loss)		(40)	(40)										(40)
Balance (in shares) at Mar. 31, 2024					7,437,117				127,457,854	[2]
Balance at Mar. 31, 2024			1,353,646		$ 75,081				$ 1,278,013	[2]			552
Balance (in shares) at Dec. 31, 2023					7,437,117				126,904,085	[2]
Balance at Dec. 31, 2023			1,363,207		$ 75,854				$ 1,286,761	[2]			592
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income attributable to Retail Opportunity Investments Partnership, LP		$ 19,464	19,464
Balance (in shares) at Jun. 30, 2024		134,891,471			7,437,117				127,454,354	[2]
Balance at Jun. 30, 2024			1,343,999		$ 74,562				$ 1,269,189	[2]			248
Balance (in shares) at Mar. 31, 2024					7,437,117				127,457,854	[2]
Balance at Mar. 31, 2024			1,353,646		$ 75,081				$ 1,278,013	[2]			552
Increase (Decrease) in Partners' Capital [Roll Forward]
Cancellation of OP Units (in shares)	[2]								(3,500)
Stock based compensation expense		$ 3,283	3,283		1,129				$ 2,154	[2]
Adjustment to non-controlling interests ownership in Operating Partnership		0	0		(849)				849	[2]
Registration expenditures		(36)	(36)						(36)	[2]
Cash distributions			(20,232)	$ (157)	(1,115)		$ (117)		(19,117)	[2]	$ (40)
Net income attributable to Retail Opportunity Investments Partnership, LP		7,799	7,799		$ 433				$ 7,366	[2]
Other comprehensive income (loss)		$ (304)	(304)										(304)
Balance (in shares) at Jun. 30, 2024		134,891,471			7,437,117				127,454,354	[2]
Balance at Jun. 30, 2024			$ 1,343,999		$ 74,562				$ 1,269,189	[2]			$ 248

[1] Consists of limited partnership interests held by third parties.

[2] Consists of general and limited partnership interests held by ROIC.