Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 57,360	$ 34,721	$ 53,683
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	92,929	97,731	97,559
Amortization of deferred financing costs and mortgage premiums, net	2,383	2,219	2,076
Straight-line rent adjustment	(959)	(1,079)	(3,083)
Amortization of above and below market rent	(8,795)	(17,654)	(15,618)
Amortization relating to stock based compensation	11,030	8,914	8,567
Provisions for tenant credit losses	2,779	11,035	1,969
Other noncash interest expense	45	293	524
Gain on sale of real estate	(22,340)	0	(13,175)
Change in operating assets and liabilities:
Tenant and other receivables	(1,039)	(23,120)	543
Prepaid expenses	(597)	(1,641)	962
Accounts payable and accrued expenses	5,072	(1,096)	303
Other assets and liabilities, net	(1,536)	(3,663)	(2,271)
Net cash provided by operating activities	136,332	106,660	132,039
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in real estate	(125,490)	0	(11,601)
Proceeds from sale of real estate	68,003	0	58,930
Improvements to properties	(46,242)	(36,515)	(35,177)
Proceeds on repayment of mortgage note receivable	84	8,041	250
Net cash (used in) provided by investing activities	(103,645)	(28,474)	12,402
CASH FLOWS FROM FINANCING ACTIVITIES
Principal repayments on mortgages	(716)	(577)	(551)
Proceeds from draws on credit facility	30,000	160,000	101,000
Payments on credit facility	(78,000)	(196,000)	(173,000)
Redemption of OP Units	0	(1,999)	(5,043)
Distributions to OP Unitholders	(2,857)	(2,187)	(8,921)
Deferred financing and other costs	0	(1,162)	(2,804)
Proceeds from issuance of common stock	69,602	0	34,162
Repurchase of common stock/OP units	0	(8,846)	0
Registration expenditures	(740)	(567)	(478)
Dividends paid to common shareholders	(39,772)	(23,398)	(90,753)
Common shares issued under the Equity Incentive Plan	428	0	1,942
Shares withheld for employee taxes	(1,905)	(2,272)	(1,986)
Net cash used in financing activities	(23,960)	(77,008)	(146,432)
Net increase (decrease) in cash, cash equivalents and restricted cash	8,727	1,178	(1,991)
Cash, cash equivalents and restricted cash at beginning of period	6,636	5,458	7,449
Cash, cash equivalents and restricted cash at end of period	15,363	6,636	5,458
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	13,218	4,822	3,800
Restricted cash	2,145	1,814	1,658
Total cash, cash equivalents and restricted cash shown in Statements of Cash Flows	15,363	6,636	5,458
Retail Opportunity Investments Partnership L.P.
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	57,360	34,721	53,683
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	92,929	97,731	97,559
Amortization of deferred financing costs and mortgage premiums, net	2,383	2,219	2,076
Straight-line rent adjustment	(959)	(1,079)	(3,083)
Amortization of above and below market rent	(8,795)	(17,654)	(15,618)
Amortization relating to stock based compensation	11,030	8,914	8,567
Provisions for tenant credit losses	2,779	11,035	1,969
Other noncash interest expense	45	293	524
Gain on sale of real estate	(22,340)	0	(13,175)
Change in operating assets and liabilities:
Tenant and other receivables	(1,039)	(23,120)	543
Prepaid expenses	(597)	(1,641)	962
Accounts payable and accrued expenses	5,072	(1,096)	303
Other assets and liabilities, net	(1,536)	(3,663)	(2,271)
Net cash provided by operating activities	136,332	106,660	132,039
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in real estate	(125,490)	0	(11,601)
Proceeds from sale of real estate	68,003	0	58,930
Improvements to properties	(46,242)	(36,515)	(35,177)
Proceeds on repayment of mortgage note receivable	84	8,041	250
Net cash (used in) provided by investing activities	(103,645)	(28,474)	12,402
CASH FLOWS FROM FINANCING ACTIVITIES
Principal repayments on mortgages	(716)	(577)	(551)
Proceeds from draws on credit facility	30,000	160,000	101,000
Payments on credit facility	(78,000)	(196,000)	(173,000)
Redemption of OP Units	0	(1,999)	(5,043)
Distributions to OP Unitholders	(42,629)	(25,585)	(99,674)
Deferred financing and other costs	0	(1,162)	(2,804)
Proceeds from issuance of common stock	69,602	0	34,162
Repurchase of common stock/OP units	0	(8,846)	0
Registration expenditures	(740)	(567)	(478)
Common shares issued under the Equity Incentive Plan	428	0	1,942
Shares withheld for employee taxes	(1,905)	(2,272)	(1,986)
Net cash used in financing activities	(23,960)	(77,008)	(146,432)
Net increase (decrease) in cash, cash equivalents and restricted cash	8,727	1,178	(1,991)
Cash, cash equivalents and restricted cash at beginning of period	6,636	5,458	7,449
Cash, cash equivalents and restricted cash at end of period	15,363	6,636	5,458
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	13,218	4,822	3,800
Restricted cash	2,145	1,814	1,658
Total cash, cash equivalents and restricted cash shown in Statements of Cash Flows	$ 15,363	$ 6,636	$ 5,458