Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Real Estate Investments:
Land	$ 896,573	$ 878,797
Building and improvements	2,238,793	2,230,600
Total real estate investments	3,135,366	3,109,397
Less: accumulated depreciation	275,708	260,115
Real Estate Investments, net	2,859,658	2,849,282
Cash and cash equivalents	13,012	11,553
Restricted cash	1,998	5,412
Tenant and other receivables, net	43,560	43,257
Deposits	500	500
Acquired lease intangible assets, net	81,262	82,778
Prepaid expenses	2,941	2,853
Deferred charges, net	37,151	37,167
Other	9,641	6,396
Total assets	3,049,723	3,039,198
Liabilities:
Term loan	298,879	298,816
Credit facility	156,544	140,329
Senior Notes	940,422	940,086
Mortgage notes payable	98,201	107,915
Acquired lease intangible liabilities, net	177,212	178,984
Accounts payable and accrued expenses	30,607	18,638
Tenants’ security deposits	6,919	6,771
Other liabilities	18,508	18,018
Total liabilities	1,727,292	1,709,557
Commitments and contingencies
Equity/Capital:
Preferred stock, $.0001 par value 50,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.0001 par value, 500,000,000 shares authorized; 112,721,459 and 112,347,451 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	11	11
Additional paid-in capital	1,413,887	1,412,590
Dividends in excess of earnings	(221,841)	(210,490)
Accumulated other comprehensive income	5,664	1,856
Total Retail Opportunity Investments Corp. stockholders’ equity	1,197,721	1,203,967
Non-controlling interests	124,710	125,674
Total equity/capital	1,322,431	1,329,641
Total liabilities and equity/capital	3,049,723	3,039,198
Retail Opportunity Investments Partnership L.P.
Real Estate Investments:
Land	896,573	878,797
Building and improvements	2,238,793	2,230,600
Total real estate investments	3,135,366	3,109,397
Less: accumulated depreciation	275,708	260,115
Real Estate Investments, net	2,859,658	2,849,282
Cash and cash equivalents	13,012	11,553
Restricted cash	1,998	5,412
Tenant and other receivables, net	43,560	43,257
Deposits	500	500
Acquired lease intangible assets, net	81,262	82,778
Prepaid expenses	2,941	2,853
Deferred charges, net	37,151	37,167
Other	9,641	6,396
Total assets	3,049,723	3,039,198
Liabilities:
Term loan	298,879	298,816
Credit facility	156,544	140,329
Senior Notes	940,422	940,086
Mortgage notes payable	98,201	107,915
Acquired lease intangible liabilities, net	177,212	178,984
Accounts payable and accrued expenses	30,607	18,638
Tenants’ security deposits	6,919	6,771
Other liabilities	18,508	18,018
Total liabilities	1,727,292	1,709,557
Commitments and contingencies
Equity/Capital:
ROIC capital	1,192,057	1,202,111
Limited partners’ capital	124,710	125,674
Accumulated other comprehensive income	5,664	1,856
Total equity/capital	1,322,431	1,329,641
Total liabilities and equity/capital	$ 3,049,723	$ 3,039,198