Retail Opportunity Investments (ROIC) 10-Q 26 Oct 16 2016 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 21, 2016
Document Information [Line Items]
Entity Registrant Name	RETAIL OPPORTUNITY INVESTMENTS CORP
Trading Symbol	ROIC
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		109,298,012
Amendment Flag	false
Entity Central Index Key	1,407,623
Entity Filer Category	Large Accelerated Filer
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Retail Opportunity Investments Partnership L.P.
Document Information [Line Items]
Entity Registrant Name	Retail Opportunity Investments Partnerships L.P.
Current Fiscal Year End Date	--12-31
Entity Central Index Key	1,577,230
Entity Filer Category	Non-accelerated Filer

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Real Estate Investments:
Land	$ 741,255	$ 669,307
Building and improvements	1,859,178	1,627,310
Total real estate investments	2,600,433	2,296,617
Less: accumulated depreciation	176,398	134,311
Real Estate Investments, net	2,424,035	2,162,306
Cash and cash equivalents	10,447	8,844
Restricted cash	161	227
Tenant and other receivables, net	31,100	28,652
Deposits	4,500	500
Acquired lease intangible assets, net of accumulated amortization	79,282	66,942
Prepaid expenses	827	1,953
Deferred charges, net of accumulated amortization	34,388	30,129
Other	1,761	1,895
Total assets	2,586,501	2,301,448
Liabilities:
Term loan	299,094	298,802
Credit facility	5,373	132,028
Mortgage notes payable	71,634	62,156
Acquired lease intangible liabilities, net of accumulated amortization	153,140	124,861
Accounts payable and accrued expenses	25,197	13,205
Tenants’ security deposits	5,778	5,085
Other liabilities	12,327	11,036
Total liabilities	1,262,390	1,136,432
Commitments and contingencies
Non-controlling interests - redeemable OP Units/ Redeemable limited partners	0	33,674
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, 109,156,012 and 99,531,034 shares issued and outstanding at September 30, 2016 and December 31, 2015, respectively	11	10
Additional paid-in-capital	1,355,523	1,166,395
Accumulated dividends in excess of earnings	(155,854)	(122,991)
Accumulated other comprehensive loss	(5,284)	(6,743)
Total Retail Opportunity Investments Corp. stockholders’ equity	1,194,396	1,036,671
Non-controlling interests	129,715	94,671
Total equity/capital	1,324,111	1,131,342
Total liabilities and equity/capital	2,586,501	2,301,448
Senior Notes Due 2026
Liabilities:
Senior Notes	199,732	0
Senior Notes Due 2024
Liabilities:
Senior Notes	245,222	244,833
Senior Notes Due 2023
Liabilities:
Senior Notes	244,893	244,426
Retail Opportunity Investments Partnership L.P.
Real Estate Investments:
Land	741,255	669,307
Building and improvements	1,859,178	1,627,310
Total real estate investments	2,600,433	2,296,617
Less: accumulated depreciation	176,398	134,311
Real Estate Investments, net	2,424,035	2,162,306
Cash and cash equivalents	10,447	8,844
Restricted cash	161	227
Tenant and other receivables, net	31,100	28,652
Deposits	4,500	500
Acquired lease intangible assets, net of accumulated amortization	79,282	66,942
Prepaid expenses	827	1,953
Deferred charges, net of accumulated amortization	34,388	30,129
Other	1,761	1,895
Total assets	2,586,501	2,301,448
Liabilities:
Term loan	299,094	298,802
Credit facility	5,373	132,028
Mortgage notes payable	71,634	62,156
Acquired lease intangible liabilities, net of accumulated amortization	153,140	124,861
Accounts payable and accrued expenses	25,197	13,205
Tenants’ security deposits	5,778	5,085
Other liabilities	12,327	11,036
Total liabilities	1,262,390	1,136,432
Commitments and contingencies
Non-controlling interests - redeemable OP Units/ Redeemable limited partners	0	33,674
Equity/Capital:
ROIC capital (consists of general and limited partnership interests held by ROIC)	1,199,680	1,043,414
Limited partners’ capital (consists of limited partnership interests held by third parties)	129,715	94,671
Accumulated other comprehensive loss	(5,284)	(6,743)
Total equity/capital	1,324,111	1,131,342
Total liabilities and equity/capital	2,586,501	2,301,448
Retail Opportunity Investments Partnership L.P. | Senior Notes Due 2026
Liabilities:
Senior Notes	199,732	0
Retail Opportunity Investments Partnership L.P. | Senior Notes Due 2024
Liabilities:
Senior Notes	245,222	244,833
Retail Opportunity Investments Partnership L.P. | Senior Notes Due 2023
Liabilities:
Senior Notes	$ 244,893	$ 244,426

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Preferred stock par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	109,156,012	99,531,034
Common stock, shares outstanding (in shares)	109,156,012	99,531,034

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues
Base rents	$ 45,429	$ 37,654	$ 134,929	$ 108,884
Recoveries from tenants	13,271	10,279	37,642	29,809
Other income	654	2,144	1,548	2,721
Total revenues	59,354	50,077	174,119	141,414
Operating expenses
Property operating	8,053	7,285	23,761	21,064
Property taxes	6,594	4,933	18,302	14,351
Depreciation and amortization	23,102	18,059	65,856	52,567
General and administrative expenses	3,220	3,092	10,055	9,387
Acquisition transaction costs	179	91	613	507
Other (income) expense	(10)	254	361	507
Total operating expenses	41,138	33,714	118,948	98,383
Operating income	18,216	16,363	55,171	43,031
Non-operating expenses
Interest expense and other finance expenses	(10,001)	(8,526)	(29,393)	(25,407)
Net income	8,215	7,837	25,778	17,624
Net income attributable to non-controlling interests	(813)	(295)	(2,645)	(681)
Net Income Attributable to Retail Opportunity Investments Corp.	$ 7,402	$ 7,542	$ 23,133	$ 16,943
Basic and diluted per share/unit (in dollars per share)	$ 0.07	$ 0.08	$ 0.22	$ 0.18
Dividends per share/unit (in dollars per share)	$ 0.18	$ 0.17	$ 0.54	$ 0.51
Comprehensive income:
Net income	$ 8,215	$ 7,837	$ 25,778	$ 17,624
Other comprehensive income
Unrealized swap derivative gain (loss) arising during the period	416		(402)
Reclassification adjustment for amortization of interest expense included in net income	628	535	1,861	1,604
Other comprehensive income	1,044	535	1,459	1,604
Comprehensive income	9,259	8,372	27,237	19,228
Comprehensive income attributable to non-controlling interests	(813)	(295)	(2,645)	(681)
Comprehensive income attributable to Retail Opportunity Investments Corp.	8,446	8,077	24,592	18,547
Retail Opportunity Investments Partnership L.P.
Revenues
Base rents	45,429	37,654	134,929	108,884
Recoveries from tenants	13,271	10,279	37,642	29,809
Other income	654	2,144	1,548	2,721
Total revenues	59,354	50,077	174,119	141,414
Operating expenses
Property operating	8,053	7,285	23,761	21,064
Property taxes	6,594	4,933	18,302	14,351
Depreciation and amortization	23,102	18,059	65,856	52,567
General and administrative expenses	3,220	3,092	10,055	9,387
Acquisition transaction costs	179	91	613	507
Other (income) expense	(10)	254	361	507
Total operating expenses	41,138	33,714	118,948	98,383
Operating income	18,216	16,363	55,171	43,031
Non-operating expenses
Interest expense and other finance expenses	(10,001)	(8,526)	(29,393)	(25,407)
Net income	$ 8,215	$ 7,837	$ 25,778	$ 17,624
Basic and diluted per share/unit (in dollars per share)	$ 0.07	$ 0.08	$ 0.22	$ 0.18
Dividends per share/unit (in dollars per share)	$ 0.18	$ 0.17	$ 0.54	$ 0.51
Comprehensive income:
Net income	$ 8,215	$ 7,837	$ 25,778	$ 17,624
Other comprehensive income
Unrealized swap derivative gain (loss) arising during the period	416	0	(402)	0
Reclassification adjustment for amortization of interest expense included in net income	628	535	1,861	1,604
Other comprehensive income	1,044	535	1,459	1,604
Comprehensive income	$ 9,259	$ 8,372	$ 27,237	$ 19,228

Consolidated Statement of Equit

Consolidated Statement of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Retained earnings (Accumulated deficit)	Accumulated other comprehensive loss	Non- controlling interests	Officer [Member]	Officer [Member]Retained earnings (Accumulated deficit)	Two Thousand and Nine Stock Plan [Member]Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total (in shares)	99,531,034	99,531,034
Balance (in shares) at Dec. 31, 2015	99,531,034	99,531,034
Balance at Dec. 31, 2015	$ 1,131,342	$ 10	$ 1,166,395	$ (122,991)	$ (6,743)	$ 94,671
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued under the 2009 Plan (in shares)									337,556
Repurchase of common stock (in shares)		(76,262)
Repurchase of common stock	(1,368)		(1,368)
Cancellation of restricted stock (in shares)		(7,332)
Stock based compensation expense	3,650		3,650
Issuance of OP Units to non-controlling interests	$ 48,175					48,175
OP Unit redemption (in shares)	613,762	613,762
OP Unit redemption	$ 12,982		12,982			(12,982)
Cash redemption for non-controlling interests	(7,182)					(7,182)
Adjustment to non-controlling interests ownership in Operating Partnership	0		(3,940)			3,940
Proceeds from the issuance of common stock (in shares)		8,757,254
Proceeds from the issuance of common stock	184,881	$ 1	184,880
Registration expenditures	(7,076)		(7,076)
Cash dividends	(62,125)			(55,863)		(6,262)	$ (133)	$ (133)
Net income attributable to Retail Opportunity Investments Corp.	23,133			23,133
Net income attributable to non-controlling interests	2,645					2,645
Other comprehensive income	$ 1,459				1,459
Total (in shares)	99,531,034	99,531,034
Proceeds on repayment of promissory note receivable secured by equity	$ 6,710					6,710
Balance (in shares) at Sep. 30, 2016	109,156,012	109,156,012
Balance at Sep. 30, 2016	$ 1,324,111	$ 11	1,355,523	(155,854)	(5,284)	129,715
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total (in shares)	109,156,012	109,156,012
Total	$ 1,317,401	$ 11	$ 1,355,523	$ (155,854)	$ (5,284)	$ 123,005

Consolidated Statement of Equi6

Consolidated Statement of Equity (Parentheticals)	9 Months Ended
	Sep. 30, 2016$ / shares
Dividends per share/unit (in dollars per share)	$ 0.54
Retained earnings (Accumulated deficit)
Dividends per share/unit (in dollars per share)	$ 0.54

Consolidated Statement of Partn

Consolidated Statement of Partners' Capital - USD ($) $ in Thousands		Total		Officer [Member]	Retail Opportunity Investments Partnership L.P.	Retail Opportunity Investments Partnership L.P.Officer [Member]	Retail Opportunity Investments Partnership L.P.Limited Partner’s Capital		Retail Opportunity Investments Partnership L.P.ROIC Capital		Retail Opportunity Investments Partnership L.P.ROIC CapitalOfficer [Member]	[2]	Retail Opportunity Investments Partnership L.P.Accumulated other comprehensive loss	Two Thousand and Nine Stock Plan [Member]Retail Opportunity Investments Partnership L.P.ROIC Capital	Common StockRetail Opportunity Investments Partnership L.P.	Common StockRetail Opportunity Investments Partnership L.P.ROIC Capital	[2]
Increase (Decrease) in Partners' Capital [Roll Forward]
Total (in shares)							12,195,603	[1]	99,531,034	[2]
Balance (in shares) at Dec. 31, 2015							12,195,603	[1]	99,531,034	[2]
Balance at Dec. 31, 2015					$ 1,131,342		$ 94,671	[1]	$ 1,043,414	[2]			$ (6,743)
Increase (Decrease) in Partners' Capital [Roll Forward]
OP units issued under the 2009 Plan (in shares)	[2]													337,556
Repurchase of OP Units (in shares)	[2]								(76,262)
Repurchase of OP Units		$ (1,368)			(1,368)				$ (1,368)	[2]
Cancellation of restricted stock (in shares)	[2]								(7,332)
Stock based compensation expense		3,650			3,650				$ 3,650	[2]
Issuance of OP Units (in shares)							2,434,833	[1]								8,757,254
Issuance of OP Units		$ 48,175			48,175		$ 48,175	[1]
Equity redemption of OP Units (in shares)		613,762					(613,762)	[1]	613,762	[2]
OP Unit redemption		$ 12,982			12,982		$ (12,982)	[1]	$ 12,982	[2]
Cash redemption of OP Units (in shares)	[1]						(2,206,613)
Cash redemption of OP Units		(7,182)			(7,182)		$ (7,182)	[1]
Adjustment to non-controlling interests ownership in Operating Partnership		0					3,940	[1]	(3,940)	[2]
Issuance of OP Units in connection with sale of common stock		184,881													$ 184,881	$ 184,881
Registration expenditures		(7,076)			(7,076)				(7,076)	[2]
Cash distributions ($0.54 per unit)					(62,125)		(6,262)	[1]	(55,863)	[2]
Dividends payable to officers		(62,125)		$ (133)		$ (133)					$ (133)
Net income attributable to Retail Opportunity Investments Partnership, LP		25,778			25,778		$ 2,645	[1]	$ 23,133	[2]
Other comprehensive income		$ 1,459			1,459								1,459
Total (in shares)		120,966,073	[2]				12,195,603	[1]	99,531,034	[2]
Proceeds on repayment of promissory note receivable secured by capital		$ 6,710			6,710		$ 6,710	[1]
Balance (in shares) at Sep. 30, 2016		120,966,073	[2]				11,810,061	[1]	109,156,012	[2]
Balance at Sep. 30, 2016					1,324,111		$ 129,715	[1]	$ 1,199,680	[2]			(5,284)
Increase (Decrease) in Partners' Capital [Roll Forward]
Total (in shares)		120,966,073	[2]				11,810,061	[1]	109,156,012	[2]
Total					$ 1,317,401		$ 123,005	[1]	$ 1,199,680	[2]			$ (5,284)
[1]	Consists of limited partnership interests held by third parties.
[2]	Consists of general and limited partnership interests held by ROIC.

Consolidated Statement of Part8

Consolidated Statement of Partners' Capital (Parentheticals)	9 Months Ended
	Sep. 30, 2016$ / shares
Retail Opportunity Investments Partnership L.P.
Cash distributions per unit (in dollars per share)	$ 0.54

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 25,778	$ 17,624
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	65,856	52,567
Amortization of deferred financing costs and mortgage premiums, net	1,558	119
Straight-line rent adjustment	(3,312)	(3,847)
Amortization of above and below market rent	(10,769)	(7,346)
Amortization relating to stock based compensation	3,650	3,490
Provisions for tenant credit losses	1,578	1,574
Other noncash interest expense	1,604	1,604
Change in operating assets and liabilities:
Restricted cash	31	205
Tenant and other receivables	(713)	(1,337)
Prepaid expenses	1,127	1,857
Accounts payable and accrued expenses	12,270	10,369
Other assets and liabilities, net	(149)	(2,284)
Net cash provided by operating activities	98,509	74,595
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in real estate	(207,980)	(235,786)
Improvements to properties	(31,920)	(19,278)
Deposits on real estate acquisitions	(4,000)	3,500
Construction escrows and other	35	23
Net cash used in investing activities	(243,865)	(251,541)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal repayments on mortgages	(7,630)	(65,156)
Proceeds from mortgage loan	0	35,500
Proceeds from term loan	0	300,000
Proceeds from draws on credit facility	242,500	306,000
Payments on credit facility	(370,000)	(446,275)
Proceeds from issuance of Senior Notes Due 2026	200,000	0
Proceeds on repayment of promissory note receivable	6,710	0
Redemption of OP Units	(38,820)	0
Distributions to OP Unitholders	(6,262)	(1,950)
Deferred financing and other costs	(71)	(1,766)
Proceeds from the sale of common stock	184,881	101,293
Registration expenditures	(6,983)	(4,286)
Dividends paid to common stockholders	(55,998)	(48,918)
Repurchase of common stock	(1,368)	(1,316)
Net cash provided by financing activities	146,959	173,126
Net increase (decrease) in cash and cash equivalents	1,603	(3,820)
Cash and cash equivalents at beginning of period	8,844	10,773
Cash and cash equivalents at end of period	10,447	6,953
Other non-cash investing and financing activities increase (decrease):
Issuance of OP Units in connection with acquisitions	46,140	0
Fair value of assumed mortgages upon acquisition	17,618	0
Intangible lease liabilities	26,631	15,609
Interest rate swap liabilities	145	0
Accrued real estate improvement costs	(726)	503
OP Unit redemption	12,982	2,731
Retail Opportunity Investments Partnership L.P.
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	25,778	17,624
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	65,856	52,567
Amortization of deferred financing costs and mortgage premiums, net	1,558	119
Straight-line rent adjustment	(3,312)	(3,847)
Amortization of above and below market rent	(10,769)	(7,346)
Amortization relating to stock based compensation	3,650	3,490
Provisions for tenant credit losses	1,578	1,574
Other noncash interest expense	1,604	1,604
Change in operating assets and liabilities:
Restricted cash	31	205
Tenant and other receivables	(713)	(1,337)
Prepaid expenses	1,127	1,857
Accounts payable and accrued expenses	12,270	10,369
Other assets and liabilities, net	(149)	(2,284)
Net cash provided by operating activities	98,509	74,595
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in real estate	(207,980)	(235,786)
Improvements to properties	(31,920)	(19,278)
Deposits on real estate acquisitions	(4,000)	3,500
Construction escrows and other	35	23
Net cash used in investing activities	(243,865)	(251,541)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal repayments on mortgages	(7,630)	(65,156)
Proceeds from mortgage loan	0	35,500
Proceeds from term loan	0	300,000
Proceeds from draws on credit facility	242,500	306,000
Payments on credit facility	(370,000)	(446,275)
Proceeds from issuance of Senior Notes Due 2026	200,000	0
Proceeds on repayment of promissory note receivable	6,710	0
Redemption of OP Units	(38,820)	0
Deferred financing and other costs	(71)	(1,766)
Proceeds from the sale of common stock	184,881	101,293
Registration expenditures	(6,983)	(4,286)
Dividends paid to common stockholders	(62,260)	(50,868)
Repurchase of common stock	(1,368)	(1,316)
Net cash provided by financing activities	146,959	173,126
Net increase (decrease) in cash and cash equivalents	1,603	(3,820)
Cash and cash equivalents at beginning of period	8,844	10,773
Cash and cash equivalents at end of period	10,447	6,953
Other non-cash investing and financing activities increase (decrease):
Issuance of OP Units in connection with acquisitions	46,140	0
Fair value of assumed mortgages upon acquisition	17,618	0
Intangible lease liabilities	26,631	15,609
Interest rate swap liabilities	145	0
Accrued real estate improvement costs	(726)	503
OP Unit redemption	$ 12,982	$ 2,731

Organization, Basis of Presenta

Organization, Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Basis of Presentation and Summary of Significant Accounting Policies	Organization, Basis of Presentation and Summary of Significant Accounting Policies Business Retail Opportunity Investments Corp., a Maryland corporation (“ROIC”), is a fully integrated and self-managed real estate investment trust (“REIT”). ROIC specializes in the acquisition, ownership and management of necessity-based community and neighborhood shopping centers on the west coast of the United States anchored by supermarkets and drugstores. ROIC is organized in a traditional umbrella partnership real estate investment trust (“UpREIT”) format pursuant to which Retail Opportunity Investments GP, LLC, its wholly-owned subsidiary, serves as the general partner of, and ROIC conducts substantially all of its business through, its operating partnership subsidiary, Retail Opportunity Investments Partnership, LP, a Delaware limited partnership (the “Operating Partnership”), together with its subsidiaries. Unless otherwise indicated or unless the context requires otherwise, all references to the “Company”, “we,” “us,” “our,” or “our company” refer to ROIC together with its consolidated subsidiaries, including the Operating Partnership. With the approval of its stockholders, ROIC reincorporated as a Maryland corporation on June 2, 2011. ROIC began operations as a Delaware corporation, known as NRDC Acquisition Corp., which was incorporated on July 10, 2007, for the purpose of acquiring assets or operating businesses through a merger, capital stock exchange, stock purchase, asset acquisition or other similar business combination. On October 20, 2009, ROIC’s stockholders and warrantholders approved the proposals presented at the special meetings of stockholders and warrantholders, respectively, in connection with the transactions contemplated by the Framework Agreement (the “Framework Agreement”) ROIC entered into on August 7, 2009 with NRDC Capital Management, LLC (“NRDC”), which, among other things, set forth the steps to be taken by ROIC to continue its business as a corporation that has elected to qualify as a REIT for U.S. federal income tax purposes. ROIC’s only material asset is its ownership of direct or indirect partnership interests in the Operating Partnership and membership interest in Retail Opportunity Investments GP, LLC, which is the sole general partner of the Operating Partnership. As a result, ROIC does not conduct business itself, other than acting as the parent company and issuing equity from time to time. The Operating Partnership holds substantially all the assets of the Company and directly or indirectly holds the ownership interests in the Company’s real estate ventures. The Operating Partnership conducts the operations of the Company’s business and is structured as a partnership with no publicly traded equity. Except for net proceeds from equity issuances by ROIC, which are contributed to the Operating Partnership, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s incurrence of indebtedness (directly and through subsidiaries) or through the issuance of operating partnership units (“OP Units”) of the Operating Partnership. Recent Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update (“ASU”) No. 2016-2, “Leases.” The pronouncement requires lessees to put most leases on their balance sheets but recognize expenses on their income statements. The guidance also eliminates real estate-specific provisions for all entities. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company is in the process of evaluating the impact this pronouncement will have on the Company’s consolidated financial statements. In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations: Simplifying the Accounting for Measurement-Period Adjustments.” The pronouncement simplifies the accounting for adjustments made to provisional amounts recognized in a business combination by eliminating the requirement to retrospectively account for those adjustments. The pronouncement requires any adjustments to provisional amounts to be applied prospectively. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. The Company adopted the provisions of ASU No. 2015-16 effective January 1, 2016 and the adoption did not have a material impact on the consolidated financial statements of the Company. In April 2015, the FASB issued ASU No. 2015-3, “Interest – Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs.” The pronouncement requires reporting entities to present debt issuance costs related to a note as a direct deduction from the face amount of that note presented in the balance sheet. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. The Company adopted the provisions of ASU No. 2015-3 effective January 1, 2016 and retrospectively applied the guidance to its debt obligations for all periods presented, which resulted in the presentation of debt issuance costs associated with its term loan, unsecured revolving credit facility, Senior Notes Due 2024, Senior Notes Due 2023, and mortgage notes payable as a direct reduction from the carrying amount of the related debt instrument. These amounts were previously included in deferred charges, net on the Company’s consolidated balance sheets. See Note 4. In February 2015, the FASB issued ASU No. 2015-2, “Amendments to the Consolidation Analysis.” The pronouncement focuses to minimize situations under previously existing guidance in which a reporting entity was required to consolidate another legal entity in which that reporting entity did not have: (1) the ability through contractual rights to act primarily on its own behalf; (2) ownership of the majority of the legal entity's voting rights; or (3) the exposure to a majority of the legal entity's economic benefits. ASU 2015-2 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. ASU 2015-2 is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. The Company adopted the provisions of ASU No. 2015-2 effective January 1, 2016, and there were no changes to the Company’s consolidation conclusions as a result of the adoption of this guidance. In May 2014, the FASB issued ASU No. 2014-9, “Revenue from Contracts with Customers.” The pronouncement was issued to clarify the principles for recognizing revenue and to develop a common revenue standard and disclosure requirements for U.S. GAAP and International Financial Reporting Standards. The pronouncement is effective for fiscal years beginning after December 15, 2017. The Company is in the process of evaluating the impact this pronouncement will have on the Company’s consolidated financial statements. Principles of Consolidation The accompanying consolidated financial statements are prepared on the accrual basis in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for complete financial statement disclosures. In the opinion of management, the consolidated financial statements include all adjustments necessary, which are of a normal and recurring nature, for the fair presentation of the Company’s financial position and the results of operations and cash flows for the periods presented. Results of operations for the three and nine month periods ended September 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 . It is suggested that these financial statements be read in conjunction with the financial statements and notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2015 . The consolidated financial statements include the accounts of the Company and those of its subsidiaries, which are wholly-owned or controlled by the Company. Entities which the Company does not control through its voting interest and entities which are variable interest entities (“VIEs”), but where it is not the primary beneficiary, are accounted for under the equity method. All significant intercompany balances and transactions have been eliminated. The Company follows the FASB guidance for determining whether an entity is a VIE and requires the performance of a qualitative rather than a quantitative analysis to determine the primary beneficiary of a VIE. Under this guidance, an entity would be required to consolidate a VIE if it has (i) the power to direct the activities that most significantly impact the entity’s economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. Effective January 1, 2016, the Company adopted the provisions of ASU No 2015-2, and as a result, concluded that the Operating Partnership is a VIE. The Company has concluded that because they have both the power and the rights to control the Operating Partnership, they are the primary beneficiary and are required to continue to consolidate the Operating Partnership. A non-controlling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to a parent. Non-controlling interests are required to be presented as a separate component of equity in the consolidated balance sheet and modify the presentation of net income by requiring earnings and other comprehensive income to be attributed to controlling and non-controlling interests. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the disclosure of contingent assets and liabilities, the reported amounts of assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the periods covered by the financial statements. The most significant assumptions and estimates relate to the purchase price allocations, depreciable lives, revenue recognition and the collectability of tenant receivables, other receivables, notes receivables, the valuation of performance-based restricted stock, stock options, and derivatives. Actual results could differ from these estimates. Federal Income Taxes Commencing with ROIC’s taxable year ended December 31, 2010, ROIC elected to qualify as a REIT under Sections 856-860 of the Internal Revenue Code (the “Code”). Under those sections, a REIT that, among other things, distributes at least 90% of its REIT taxable income (determined without regard to the dividends paid deduction and by excluding net capital gains) and meets certain other qualifications prescribed by the Code will not be taxed on that portion of its taxable income that is distributed. Although ROIC may qualify as a REIT for U.S. federal income tax purposes, it is subject to state income or franchise taxes in certain states in which some of its properties are located. In addition, taxable income from non-REIT activities managed through the Company’s taxable REIT subsidiary (“TRS”), if any, is fully subject to U.S. federal, state and local income taxes. For all periods from inception through September 26, 2013 the Operating Partnership has been an entity disregarded from its sole owner, ROIC, for U.S. federal income tax purposes and as such has not been subject to federal income taxes. Effective September 27, 2013, the Operating Partnership issued OP Units in connection with the acquisitions of two shopping centers. Accordingly, the Operating Partnership ceased being a disregarded entity and instead is being treated as a partnership for U.S. federal income tax purposes. The Company follows the FASB guidance that defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The FASB also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. The Company records interest and penalties relating to unrecognized tax benefits, if any, as interest expense. As of September 30, 2016 , the statute of limitations for the tax years 2013 through and including 2015 remain open for examination by the Internal Revenue Service (“IRS”) and state taxing authorities. ROIC intends to make regular quarterly distributions to holders of its common stock. U.S. federal income tax law generally requires that a REIT distribute annually at least 90% of its REIT taxable income, without regard to the deduction for dividends paid and excluding net capital gains, and that it pay U.S. federal income tax at regular corporate rates to the extent that it annually distributes less than 100% of its net taxable income. ROIC intends to pay regular quarterly dividends to stockholders in an amount not less than its net taxable income, if and to the extent authorized by its board of directors. Before ROIC pays any dividend, whether for U.S. federal income tax purposes or otherwise, it must first meet both its operating requirements and its debt service on debt. If ROIC’s cash available for distribution is less than its net taxable income, it could be required to sell assets or borrow funds to make cash distributions or it may make a portion of the required distribution in the form of a taxable stock distribution or distribution of debt securities. Real Estate Investments All costs related to the improvement or replacement of real estate properties are capitalized. Additions, renovations and improvements that enhance and/or extend the useful life of a property are also capitalized. Expenditures for ordinary maintenance, repairs and improvements that do not materially prolong the normal useful life of an asset are charged to operations as incurred. The Company expenses transaction costs associated with business combinations in the period incurred. During the nine months ended September 30, 2016 and 2015 , capitalized costs related to the improvement or replacement of real estate properties were approximately $31.2 million and $18.8 million , respectively. Upon the acquisition of real estate properties, the fair value of the real estate purchased is allocated to the acquired tangible assets (consisting of land, buildings and improvements), and acquired intangible assets and liabilities (consisting of above-market and below-market leases and acquired in-place leases). Acquired lease intangible assets include above-market leases and acquired in-place leases, and acquired lease intangible liabilities represent below-market leases, in the accompanying consolidated balance sheets. The fair value of the tangible assets of an acquired property is determined by valuing the property as if it were vacant, which value is then allocated to land, buildings and improvements based on management’s determination of the relative fair values of these assets. In valuing an acquired property’s intangibles, factors considered by management include an estimate of carrying costs during the expected lease-up periods, and estimates of lost rental revenue during the expected lease-up periods based on management’s evaluation of current market demand. Management also estimates costs to execute similar leases, including leasing commissions, tenant improvements, legal and other related costs. Leasing commissions, legal and other related costs (“lease origination costs”) are classified as deferred charges in the accompanying consolidated balance sheets. The value of in-place leases is measured by the excess of (i) the purchase price paid for a property after adjusting existing in-place leases to market rental rates, over (ii) the estimated fair value of the property as if vacant. Above-market and below-market lease values are recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between the contractual amounts to be received and management’s estimate of market lease rates, measured over the terms of the respective leases that management deemed appropriate at the time of acquisition. Such valuations include a consideration of the non-cancellable terms of the respective leases as well as any applicable renewal periods. The fair values associated with below-market rental renewal options are determined based on the Company’s experience and the relevant facts and circumstances that existed at the time of the acquisitions. The value of the above-market and below-market leases is amortized to rental income, over the terms of the respective leases including option periods, if applicable. The value of in-place leases are amortized to expense over the remaining non-cancellable terms of the respective leases. If a lease were to be terminated prior to its stated expiration, all unamortized amounts relating to that lease would be recognized in operations at that time. The Company may record a bargain purchase gain if it determines that the purchase price for the acquired assets was less than the fair value. The Company will record a liability in situations where any part of the cash consideration is deferred. The amounts payable in the future are discounted to their present value. The liability is subsequently re-measured to fair value with changes in fair value recognized in the consolidated statements of operations. If, up to one year from the acquisition date, information regarding fair value of assets acquired and liabilities assumed is received and estimates are refined, appropriate property adjustments are made to the purchase price allocation in the period in which the amounts are adjusted. In conjunction with the Company’s pursuit and acquisition of real estate investments, the Company expensed acquisition transaction costs during the three months ended September 30, 2016 and 2015 of approximately $179,000 and $91,000 , respectively, and approximately $613,000 and $507,000 during the nine months ended September 30, 2016 and 2015 , respectively. Asset Impairment The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of the asset to aggregate future net cash flows (undiscounted and without interest) expected to be generated by the asset. If such assets are considered impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceed the fair value. Management does not believe that the value of any of the Company’s real estate investments was impaired at September 30, 2016 . Cash and Cash Equivalents The Company considers all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents are maintained at financial institutions and, at times, balances may exceed the federally insured limit by the Federal Deposit Insurance Corporation. The Company has not experienced any losses related to these balances. Restricted Cash The terms of several of the Company’s mortgage loans payable require the Company to deposit certain replacement and other reserves with its lenders. Such “restricted cash” is generally available only for property-level requirements for which the reserves have been established and is not available to fund other property-level or Company-level obligations. Revenue Recognition Management has determined that all of the Company’s leases with its various tenants are operating leases. Rental income is generally recognized based on the terms of leases entered into with tenants. In those instances in which the Company funds tenant improvements and the improvements are deemed to be owned by the Company, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. When the Company determines that the tenant allowances are lease incentives, the Company commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. Minimum rental income from leases with scheduled rent increases is recognized on a straight-line basis over the lease term. Percentage rent is recognized when a specific tenant’s sales breakpoint is achieved. Property operating expense recoveries from tenants of common area maintenance, real estate taxes and other recoverable costs are recognized in the period the related expenses are incurred. Termination fees (included in other income) are fees that the Company has agreed to accept in consideration for permitting certain tenants to terminate their lease prior to the contractual expiration date. The Company recognizes termination fees in accordance with Securities and Exchange Commission Staff Accounting Bulletin 104, “Revenue Recognition,” when the following conditions are met: (a) the termination agreement is executed; (b) the termination fee is determinable; (c) all landlord services pursuant to the terminated lease have been rendered; and (d) collectability of the termination fee is assured. Interest income is recognized as it is earned. Gains or losses on disposition of properties are recorded when the criteria for recognizing such gains or losses under GAAP have been met. The Company must make estimates as to the collectability of its accounts receivable related to base rent, straight-line rent, expense reimbursements and other revenues. Management analyzes accounts receivable by considering tenant creditworthiness, current economic trends, and changes in tenants’ payment patterns when evaluating the adequacy of the allowance for doubtful accounts receivable. The Company also provides an allowance for future credit losses of the deferred straight-line rents receivable. The provision for doubtful accounts at September 30, 2016 and December 31, 2015 was approximately $5.1 million and $4.5 million , respectively. Depreciation and Amortization The Company uses the straight-line method for depreciation and amortization. Buildings are depreciated over the estimated useful lives which the Company estimates to be 39 - 40 years. Property improvements are depreciated over the estimated useful lives that range from 10 to 20 years. Furniture and fixtures are depreciated over the estimated useful lives that range from 3 to 10 years. Tenant improvements are amortized over the shorter of the life of the related leases or their useful life. Deferred Leasing and Financing Costs Costs incurred in obtaining tenant leases (principally leasing commissions and acquired lease origination costs) are amortized ratably over the life of the tenant leases. Costs incurred in obtaining long-term financing are amortized ratably over the related debt agreement. The amortization of deferred leasing and financing costs is included in Depreciation and amortization and Interest expense and other finance expenses, respectively, in the Consolidated Statements of Operations. Internal Capitalized Leasing Costs The Company capitalizes a portion of payroll-related costs related to its leasing personnel associated with new leases and lease renewals. These costs are amortized over the life of the respective leases. During the three months ended September 30, 2016 and 2015 , the Company capitalized approximately $313,000 and $279,000 , respectively. During the nine months ended September 30, 2016 and 2015 , the Company capitalized approximately $931,000 and $804,000 , respectively. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and tenant receivables. The Company places its cash and cash equivalents in excess of insured amounts with high quality financial institutions. The Company performs ongoing credit evaluations of its tenants and requires tenants to provide security deposits. Earnings Per Share Basic earnings per share (“EPS”) excludes the impact of dilutive shares and is computed by dividing net income by the weighted average number of shares of common stock outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue shares of common stock were exercised or converted into shares of common stock and then shared in the earnings of the Company. For the three and nine months ended September 30, 2016 and 2015 , basic EPS was determined by dividing net income allocable to common stockholders for the applicable period by the weighted average number of shares of common stock outstanding during such period. Net income during the applicable period is also allocated to the time-based unvested restricted stock as these grants are entitled to receive dividends and are therefore considered a participating security. Time-based unvested restricted stock is not allocated net losses and/or any excess of dividends declared over net income; such amounts are allocated entirely to the common stockholders other than the holders of time-based unvested restricted stock. The performance-based restricted stock awards outstanding under the 2009 Plan described in Note 7 are excluded from the basic EPS calculation, as these units are not participating securities until they vest. The following table sets forth the reconciliation between basic and diluted EPS for ROIC (in thousands, except share data): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Numerator: Net income $ 8,215 $ 7,837 $ 25,778 $ 17,624 Less income attributable to non-controlling interests (813 ) (295 ) (2,645 ) (681 ) Less earnings allocated to unvested shares (67 ) (58 ) (204 ) (173 ) Net income available for common stockholders, basic $ 7,335 $ 7,484 $ 22,929 $ 16,770 Numerator: Net income $ 8,215 $ 7,837 $ 25,778 $ 17,624 Less earnings allocated to unvested shares (67 ) (58 ) (204 ) (173 ) Net income available for common stockholders, diluted $ 8,148 $ 7,779 $ 25,574 $ 17,451 Denominator: Denominator for basic EPS – weighted average common equivalent shares 107,745,991 96,722,628 102,460,495 94,479,375 OP units 12,015,200 3,771,314 11,767,965 3,825,710 Restricted stock awards - performance-based 166,949 163,167 147,751 153,191 Stock options 145,609 98,354 132,936 102,705 Denominator for diluted EPS – weighted average common equivalent shares 120,073,749 100,755,463 114,509,147 98,560,981 Earnings Per Unit The following table sets forth the reconciliation between basic and diluted earnings per unit for the Operating Partnership (in thousands, except unit data): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Numerator: Net income $ 8,215 $ 7,837 $ 25,778 $ 17,624 Less earnings allocated to unvested shares (67 ) (58 ) (204 ) (173 ) Net income available to unitholders, basic and diluted $ 8,148 $ 7,779 $ 25,574 $ 17,451 Denominator: Denominator for basic earnings per unit – weighted average common equivalent units 119,761,191 100,493,942 114,228,460 98,305,085 Restricted stock awards – performance-based 166,949 163,167 147,751 153,191 Stock options 145,609 98,354 132,936 102,705 Denominator for diluted earnings per unit – weighted average common equivalent units 120,073,749 100,755,463 114,509,147 98,560,981 Stock-Based Compensation The Company has a stock-based employee compensation plan, which is more fully described in Note 7. The Company accounts for its stock-based compensation plans based on the FASB guidance which requires that compensation expense be recognized based on the fair value of the stock awards less estimated forfeitures. Restricted stock grants vest based upon the completion of a service period (“time-based grants”) and/or the Company meeting certain established market-specific financial performance criteria (“performance-based grants”). Time-based grants are valued according to the market price for the Company’s common stock at the date of grant. For performance-based grants, a Monte Carlo valuation model is used, taking into account the underlying contingency risks associated with the performance criteria. It is the Company’s policy to grant options with an exercise price equal to the quoted closing market price of stock on the grant date. Awards of stock options and time-based grants of stock are expensed as compensation on a straight-line basis over the vesting period. Depending on the terms of the agreement, certain awards of performance-based grants are expensed as compensation under the accelerated attribution method while certain are expensed as compensation on a straight-line basis over the vesting period. All awards of performance-based grants are recognized in income regardless of the results of the performance criteria. Non-Controlling Interests – Redeemable OP Units / Redeemable Limited Partners OP Units are classified as either mezzanine equity or permanent equity. If ROIC could be required to deliver cash in exchange for the OP Units upon redemption, such OP Units are referred to as Redeemable OP Units and presented in the mezzanine section of the balance sheet. If ROIC could, in its sole discretion, deliver cash or shares of ROIC common stock in exchange for the OP Units upon redemption, such OP Units are classified as permanent equity and presented in the equity section of the balance sheet. As of September 30, 2016 , all outstanding OP Units are classified as permanent equity. See Note 8 for further discussion. Derivatives The Company records all derivatives on the balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. When the Company terminates a derivative for which cash flow hedging was being applied, the balance which was recorded in Other Comprehensive Income is amortized to interest expense over the remaining contractual term of the swap. The Company includes cash payments made to terminate interest rate swaps as an operating activity on the statement of cash flows, given the nature of the underlying cash flows that the derivative was hedging. Segment Reporting The Company’s primary business is the ownership, management, and redevelopment of retail real estate properties. The Company reviews operating and financial information for each property on an individual basis and therefore, each property represents an individual operating segment. The Company evaluates financial performance using property operating income, defined as operating revenues (base rent and recoveries from tenants), less property and related expenses (property operating expenses and property taxes). The Company has aggregated the properties into one reportable segment as the properties share similar long-term econo

Real Estate Investments

Real Estate Investments	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Real Estate Investments	Real Estate Investments The following real estate investment transactions have occurred during the nine months ended September 30, 2016 . Property Acquisitions On March 10, 2016, the Company acquired a two -property portfolio for an adjusted purchase price of approximately $64.3 million . The first property known as Magnolia Shopping Center is located in Santa Barbara, California, is approximately 116,000 square feet and is anchored by Kroger (Ralph’s) Supermarket. The second property, known as Casitas Plaza Shopping Center is located in Carpinteria, California, within Santa Barbara County, is approximately 97,000 square feet and is anchored by Albertson’s Supermarket and CVS Pharmacy. The acquisitions were funded through the issuance of 2,434,833 OP Units with a fair value of approximately $46.1 million , the assumption of $9.3 million and $7.6 million in mortgage loans on Magnolia Shopping Center and Casitas Plaza Shopping Center, respectively, and cash on hand. On April 28, 2016, the Company acquired the property known as Bouquet Center located in Santa Clarita, California, within the Los Angeles metropolitan area, for a purchase price of approximately $ 59.0 million . Bouquet Center is approximately 149,000 square feet and is anchored by Safeway (Vons) Supermarket, CVS Pharmacy and Ross Dress For Less. The property was acquired with borrowings under the Company's unsecured revolving credit facility, proceeds from the ATM program and available cash from operations. On June 1, 2016, the Company acquired the property known as North Ranch Shopping Center located in Westlake Village, California, within the Los Angeles metropolitan area, for a purchase price of approximately $ 122.8 million . North Ranch Shopping Center is approximately 147,000 , square feet and is anchored by Kroger (Ralph's) Supermarket, Trader Joe's, Rite Aid Pharmacy, and Petco. The property was acquired with borrowings under the Company's unsecured revolving credit facility, proceeds from the ATM program and available cash from operations. On July 14, 2016, the Company acquired the property known as Monterey Center, located in downtown Monterey, California, for a purchase price of approximately $12.1 million . Monterey Center is approximately 26,000 square feet and is anchored by Trader Joe's and Pharmaca Pharmacy. The property was acquired with cash on hand. On September 15, 2016, the Company acquired the property known as Rose City Center located in Portland, Oregon, for a purchase price of approximately $12.8 million . Rose City Center is approximately 61,000 square feet and is anchored by Safeway Supermarket. The property was acquired with borrowings under the Company's unsecured revolving credit facility and cash on hand. Any reference to the number of properties and square footage are unaudited and outside the scope of the Company’s independent registered public accounting firm’s review of its financial statements in accordance with the standards of the United States Public Company Accounting Oversight Board. The financial information set forth below summarizes the Company’s purchase price allocation for the properties acquired during the nine months ended September 30, 2016 (in thousands). September 30, 2016 ASSETS Land $ 67,590 Building and improvements 210,858 Acquired lease intangible assets 14,887 Deferred charges 5,035 Assets acquired $ 298,370 LIABILITIES Mortgage notes assumed $ 17,618 Acquired lease intangible liabilities 26,631 Liabilities assumed $ 44,249 The allocations for Magnolia Shopping Center, Casitas Plaza Shopping Center, Bouquet Center and North Ranch Shopping Center are final. The allocations for Monterey Center and Rose City Center are preliminary and will be adjusted as final information becomes available. Pro Forma Financial Information The pro forma financial information set forth below is based upon the Company’s historical consolidated statements of operations for the three and nine months ended September 30, 2016 and 2015 , adjusted to give effect to the acquisition of properties described above as if such transactions had been completed at the beginning of 2015 . The pro forma financial information set forth below is presented for informational purposes only and may not be indicative of what actual results of operations would have been had the transactions occurred at the beginning of 2015 , nor does it purport to represent the results of future operations (in thousands). Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Statement of operations: Revenues $ 45,634 $ 46,834 $ 142,220 $ 143,235 Net income attributable to Retail Opportunity Investments Corp. $ 7,436 $ 7,950 $ 23,360 $ 19,423 The following table summarizes the operating results included in the Company’s historical consolidated statement of operations for the three and nine months ended September 30, 2016 , for the properties acquired during the nine months ended September 30, 2016 (in thousands). Three Months Ended Nine Months Ended Statement of operations: Revenues $ 4,923 $ 8,180 Net income attributable to Retail Opportunity Investments Corp. $ 626 $ 948

Tenant Leases

Tenant Leases	9 Months Ended
	Sep. 30, 2016
Leases [Abstract]
Tenant Leases	Tenant Leases Space in the Company’s shopping centers is leased to various tenants under operating leases that usually grant tenants renewal options and generally provide for additional rents based on certain operating expenses as well as tenants’ sales volume. Future minimum rents to be received under non-cancellable leases as of September 30, 2016 are summarized as follows (in thousands): Minimum Rents Remaining 2016 $ 41,379 2017 157,584 2018 137,103 2019 115,455 2020 96,696 Thereafter 422,250 Total minimum lease payments $ 970,467

Mortgage Notes Payable, Credit

Mortgage Notes Payable, Credit Facilities and Senior Notes	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Mortgage Notes Payable, Credit Facilities and Senior Notes	Mortgage Notes Payable, Credit Facilities and Senior Notes ROIC does not hold any indebtedness. All debt is held directly or indirectly by the Operating Partnership; however, ROIC has guaranteed the Operating Partnership’s term loan, unsecured revolving credit facility, carve-out guarantees on property-level debt, the Senior Notes Due 2026, the Senior Notes Due 2024 and the Senior Notes Due 2023. In April 2015, the FASB issued ASU No. 2015-3, which requires reporting entities to present debt issuance costs related to a note as a direct deduction from the face amount of that note presented in the balance sheet. Effective January 1, 2016, the Company adopted the provisions of ASU 2015-3 and retrospectively applied the guidance to its debt obligations for all periods presented. The unamortized deferred financing costs were previously included in deferred charges, net on the Company’s consolidated Balance Sheets. Mortgage Notes Payable On March 10, 2016, in connection with the acquisitions of Magnolia Shopping Center and Casitas Plaza Shopping Center, the Company assumed two existing mortgage loans with outstanding principal balances of approximately $9.3 million and $7.6 million , respectively. On April 1, 2016, the Company repaid in full the Gateway Village III mortgage note related to Gateway Shopping Center for a total of approximately $7.1 million , without penalty, in accordance with the prepayment provisions of the note. The mortgage notes payable collateralized by respective properties and assignment of leases at September 30, 2016 and December 31, 2015 , respectively, were as follows (in thousands): Property Maturity Date Interest Rate September 30, 2016 December 31, 2015 Gateway Village III July 2016 6.10 % $ — $ 7,166 Bernardo Heights Plaza July 2017 5.70 % 8,265 8,404 Santa Teresa Village February 2018 6.20 % 10,442 10,613 Magnolia Shopping Center October 2018 5.50 % 9,179 — Casitas Plaza Shopping Center June 2022 5.32 % 7,483 — Diamond Hills Plaza October 2025 3.55 % 35,500 35,500 $ 70,869 $ 61,683 Mortgage premiums 1,208 922 Net unamortized deferred financing costs (443 ) (449 ) Total mortgage notes payable $ 71,634 $ 62,156 Term Loan and Credit Facility The carrying values of the Company’s term loan (the “term loan”) were as follows (in thousands): September 30, 2016 December 31, 2015 Term Loan $ 300,000 $ 300,000 Net unamortized deferred financing costs (906 ) (1,198 ) Term Loan: $ 299,094 $ 298,802 On September 29, 2015, the Company entered into a term loan agreement (the “Term Loan Agreement”) with KeyBank National Association, as Administrative Agent, and U.S. Bank National Association, as Syndication Agent and the other lenders party thereto, under which the lenders agreed to provide a $300.0 million unsecured term loan facility. The Term Loan Agreement also provides that the Company may from time to time request increased aggregate commitments of $200.0 million under certain conditions set forth in the Term Loan Agreement, including the consent of the lenders for the additional commitments. The initial maturity date of the term loan is January 31, 2019, subject to two one-year extension options, which may be exercised upon satisfaction of certain conditions including the payment of extension fees. Borrowings under the Term Loan Agreement accrue interest on the outstanding principal amount at a rate equal to an applicable rate based on the credit rating level of the Company, plus, as applicable, (i) a LIBOR rate determined by reference to the cost of funds for U.S. dollar deposits for the relevant period (the “Eurodollar Rate”), or (ii) a base rate determined by reference to the highest of (a) the federal funds rate plus 0.50% , (b) the rate of interest announced by the Administrative Agent as its “prime rate,” and (c) the Eurodollar Rate plus 1.10% . The carrying values of the Company’s unsecured revolving credit facility were as follows (in thousands): September 30, 2016 December 31, 2015 Credit Facility $ 8,000 $ 135,500 Net unamortized deferred financing costs (2,627 ) (3,472 ) Credit Facility: $ 5,373 $ 132,028 The Operating Partnership has an unsecured revolving credit facility (the “credit facility”) with several banks which provides for borrowings of up to $500.0 million . Additionally, the credit facility contains an accordion feature, which allows the Operating Partnership to increase the credit facility amount up to an aggregate of $1.0 billion , subject to lender consents and other conditions. The maturity date of the credit facility is January 31, 2019, subject to a further one-year extension option, which may be exercised by the Operating Partnership upon satisfaction of certain conditions including the payment of extension fees. Borrowings under the credit facility accrue interest on the outstanding principal amount at a rate equal to an applicable rate based on the credit rating level of the Company, plus, as applicable, (i) the Eurodollar Rate, or (ii) a base rate determined by reference to the highest of (a) the federal funds rate plus 0.50% , (b) the rate of interest announced by KeyBank, National Association as its “prime rate,” and (c) the Eurodollar Rate plus 1.00% . Additionally, the Operating Partnership is obligated to pay a facility fee at a rate based on the credit rating level of the Company, currently 0.20% , and a fronting fee at a rate of 0.125% per year with respect to each letter of credit issued under the credit facility. The Company obtained investment grade credit ratings from Moody’s Investors Service (Baa2) and Standard & Poor’s Ratings Services (BBB-) during the second quarter of 2013. Both the term loan and credit facility contain customary representations, financial and other covenants. The Operating Partnership’s ability to borrow under the term loan and credit facility is subject to its compliance with financial covenants and other restrictions on an ongoing basis. The Operating Partnership was in compliance with such covenants at September 30, 2016 . As of September 30, 2016 , $300.0 million and $8.0 million were outstanding under the term loan and credit facility, respectively. The average interest rate on the term loan during both the three and nine months ended September 30, 2016 was 1.6% . The average interest rate on the credit facility during both the three and nine months ended September 30, 2016 was 1.5% . The Company had no available borrowings under the term loan at September 30, 2016 . The Company had $492.0 million available to borrow under the credit facility at September 30, 2016 . Senior Notes Due 2026 The carrying value of the Company’s Senior Notes Due 2026 is as follows (in thousands): September 30, 2016 December 31, 2015 Principal amount $ 200,000 $ — Net unamortized deferred financing costs (268 ) — Senior Notes Due 2026: $ 199,732 $ — On July 26, 2016, the Operating Partnership entered into a Note Purchase Agreement, as amended, which provided for the issuance of $200.0 million principal amount of 3.95% Senior Notes Due 2026 (the “Senior Notes Due 2026”) in a private placement effective September 22, 2016. The Senior Notes Due 2026 pay interest on March 22 and September 22 of each year, commencing on March 22, 2017, and mature on September 22, 2026, unless prepaid earlier by the Operating Partnership. The Operating Partnership's performance of the obligations under the Note Purchase Agreement, including the payment of any outstanding indebtedness thereunder, are guaranteed, jointly and severally, by ROIC. The net proceeds were used to reduce borrowings under the Operating Partnership’s $500.0 million unsecured revolving credit facility. The interest expense recognized on the Senior Notes Due 2026 during the three and nine months ended September 30, 2016 included approximately $198,000 for the contractual coupon interest. In connection with the issuance of the Senior Notes Due 2026, the Company incurred approximately $268,000 of deferred financing costs which are being amortized over the term of the Senior Notes Due 2026. Senior Notes Due 2024 The carrying value of the Company’s Senior Notes Due 2024 is as follows (in thousands): September 30, 2016 December 31, 2015 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (2,967 ) (3,191 ) Net unamortized deferred financing costs (1,811 ) (1,976 ) Senior Notes Due 2024: $ 245,222 $ 244,833 On December 3, 2014, the Operating Partnership completed a registered underwritten public offering of $250.0 million aggregate principal amount of 4.000% Senior Notes due 2024 (the “Senior Notes Due 2024”), fully and unconditionally guaranteed by ROIC. The Senior Notes Due 2024 pay interest semi-annually on June 15 and December 15, commencing on June 15, 2015, and mature on December 15, 2024, unless redeemed earlier by the Operating Partnership. The Senior Notes Due 2024 are the Operating Partnership’s senior unsecured obligations that rank equally in right of payment with the Operating Partnership’s other unsecured indebtedness, and effectively junior to (i) all of the indebtedness and other liabilities, whether secured or unsecured, and any preferred equity of the Operating Partnership’s subsidiaries, and (ii) all of the Operating Partnership’s indebtedness that is secured by its assets, to the extent of the value of the collateral securing such indebtedness outstanding. ROIC fully and unconditionally guaranteed the Operating Partnership’s obligations under the Senior Notes Due 2024 on a senior unsecured basis, including the due and punctual payment of principal of, and premium, if any, and interest on, the notes, whether at stated maturity, upon acceleration, notice of redemption or otherwise. The guarantee is a senior unsecured obligation of ROIC and ranks equally in right of payment with all other senior unsecured indebtedness of ROIC. ROIC’s guarantee of the Senior Notes Due 2024 is effectively subordinated in right of payment to all liabilities, whether secured or unsecured, and any preferred equity of its subsidiaries (including the Operating Partnership and any entity ROIC accounts for under the equity method of accounting). The interest expense recognized on the Senior Notes Due 2024 during the three months ended September 30, 2016 included $2.5 million and approximately $75,000 for the contractual coupon interest and the accretion of the debt discount, respectively. The interest expense recognized on the Senior Notes Due 2024 during the nine months ended September 30, 2016 included $7.5 million and approximately $224,000 for the contractual coupon interest and the accretion of the debt discount, respectively. The interest expense recognized on the Senior Notes Due 2024 during the three months ended September 30, 2015 included $2.5 million and approximately $72,000 for the contractual coupon interest and the accretion of the debt discount, respectively. The interest expense recognized on the Senior Notes Due 2024 during the nine months ended September 30, 2015 included $7.5 million and approximately $215,000 for the contractual coupon interest and the accretion of the debt discount, respectively. In connection with the Senior Notes Due 2024 offering, the Company incurred approximately $2.2 million of deferred financing costs which are being amortized over the term of the Senior Notes Due 2024. Senior Notes Due 2023 The carrying value of the Company’s Senior Notes Due 2023 is as follows (in thousands): September 30, 2016 December 31, 2015 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (3,212 ) (3,482 ) Net unamortized deferred financing costs (1,895 ) (2,092 ) Senior Notes Due 2023: $ 244,893 $ 244,426 On December 9, 2013, the Operating Partnership completed a registered underwritten public offering of $250.0 million aggregate principal amount of 5.000% Senior Notes due 2023 (the “Senior Notes Due 2023”), fully and unconditionally guaranteed by ROIC. The Senior Notes Due 2023 pay interest semi-annually on June 15 and December 15, commencing on June 15, 2014, and mature on December 15, 2023, unless redeemed earlier by the Operating Partnership. The Senior Notes Due 2023 are the Operating Partnership’s senior unsecured obligations that rank equally in right of payment with the Operating Partnership’s other unsecured indebtedness, and effectively junior to (i) all of the indebtedness and other liabilities, whether secured or unsecured, and any preferred equity of the Operating Partnership’s subsidiaries, and (ii) all of the Operating Partnership’s indebtedness that is secured by its assets, to the extent of the value of the collateral securing such indebtedness outstanding. ROIC fully and unconditionally guaranteed the Operating Partnership’s obligations under the Senior Notes Due 2023 on a senior unsecured basis, including the due and punctual payment of principal of, and premium, if any, and interest on, the notes, whether at stated maturity, upon acceleration, notice of redemption or otherwise. The guarantee is a senior unsecured obligation of ROIC and will rank equally in right of payment with all other senior unsecured indebtedness of ROIC. ROIC’s guarantee of the Senior Notes Due 2023 is effectively subordinated in right of payment to all liabilities, whether secured or unsecured, and any preferred equity of its subsidiaries (including the Operating Partnership and any entity ROIC accounts for under the equity method of accounting). The interest expense recognized on the Senior Notes Due 2023 during the three months ended September 30, 2016 included approximately $3.1 million and $91,000 for the contractual coupon interest and the accretion of the debt discount, respectively. The interest expense recognized on the Senior Notes Due 2023 during the nine months ended September 30, 2016 included approximately $9.4 million and $270,000 for the contractual coupon interest and the accretion of the debt discount, respectively. The interest expense recognized on the Senior Notes Due 2023 during the three months ended September 30, 2015 included approximately $3.1 million and $87,000 for the contractual coupon interest and the accretion of the debt discount, respectively. The interest expense recognized on the Senior Notes Due 2023 during the nine months ended September 30, 2015 included approximately $9.4 million and $256,000 for the contractual coupon interest and the accretion of the debt discount, respectively. In connection with the Senior Notes Due 2023 offering, the Company incurred approximately $2.6 million of deferred financing costs which are being amortized over the term of the Senior Notes Due 2023.

Preferred Stock of ROIC

Preferred Stock of ROIC	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Preferred Stock of ROIC	Preferred Stock of ROIC ROIC is authorized to issue 50,000,000 shares of preferred stock with such designations, voting and other rights and preferences as may be determined from time to time by the board of directors. As of September 30, 2016 and December 31, 2015 , there were no shares of preferred stock outstanding.

Common Stock of ROIC

Common Stock of ROIC	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Common Stock of ROIC	Common Stock of ROIC Equity Issuance On July 12, 2016, the Company issued 6,555,000 shares of common stock in a registered public offering, including shares issued upon the exercise in full of the underwriters’ option to purchase additional shares, resulting in net proceeds of approximately $133.0 million , after deducting the underwriters’ discounts and commissions and offering expenses. The net proceeds were used to reduce borrowings under the Operating Partnership’s $500.0 million unsecured revolving credit facility. ATM On September 19, 2014, ROIC entered into four separate Sales Agreements (the “Original Sales Agreements”) with each of Jefferies LLC, KeyBanc Capital Markets Inc., MLV & Co. LLC and Raymond James & Associates, Inc. (each individually, an “Original Agent” and collectively, the “Original Agents”) pursuant to which ROIC may sell, from time to time, shares of ROIC’s common stock, par value $0.0001 per share, having an aggregate offering price of up to $100.0 million through the Original Agents either as agents or principals. On May 23, 2016, ROIC entered into two additional sales agreements (the “Additional Sales Agreements”, and together with the Original Sales Agreements, the “Sales Agreements”) with each of Canaccord Genuity Inc. and Robert W. Baird & Co. Incorporated (the “Additional Agents”, and together with the Original Agents, the “Agents”) pursuant to which the Company may sell shares of ROIC's common stock through the Additional Agents either as agents or principals. In addition, on May 19, 2016, the Company terminated the Original Sales Agreement with MLV & Co. LLC. During the nine months ended September 30, 2016 , ROIC sold a total of 2,202,254 shares under the Sales Agreements, which resulted in gross proceeds of approximately $45.6 million and commissions of approximately $584,000 paid to the Agents. Since the Original Sales Agreements were entered into through September 30, 2016 , ROIC has sold a total of 2,746,821 shares under the Sales Agreements, which resulted in gross proceeds of approximately $55.5 million and commissions of approximately $733,000 paid to the Agents. Stock Repurchase Program On July 31, 2013, the Company’s board of directors authorized a stock repurchase program to repurchase up to a maximum of $50.0 million of the Company’s common stock. During the nine months ended September 30, 2016 , the Company did not repurchase any shares of common stock under this program.

Stock Compensation for ROIC

Stock Compensation for ROIC	9 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Compensation for ROIC	Stock Compensation for ROIC ROIC follows the FASB guidance related to stock compensation which establishes financial accounting and reporting standards for stock-based employee compensation plans, including all arrangements by which employees receive shares of stock or other equity instruments of the employer, or the employer incurs liabilities to employees in amounts based on the price of the employer’s stock. The guidance also defines a fair value-based method of accounting for an employee stock option or similar equity instrument. In 2009, ROIC adopted the 2009 Plan. The 2009 Plan provides for grants of restricted common stock and stock option awards up to an aggregate of 7.5% of the issued and outstanding shares of ROIC’s common stock at the time of the award, subject to a ceiling of 4,000,000 shares. Restricted Stock During the nine months ended September 30, 2016 , ROIC awarded 350,614 shares of restricted common stock under the 2009 Plan, of which 121,150 shares are performance-based grants and the remainder of the shares are time-based grants. The performance-based grants vest based on pre-defined market-specific performance criteria with a vesting date on January 1, 2019. A summary of the status of ROIC’s non-vested restricted stock awards as of September 30, 2016 , and changes during the nine months ended September 30, 2016 are presented below: Shares Weighted Average Grant Date Fair Value Non-vested at December 31, 2015 627,471 $ 14.39 Granted 350,614 $ 15.96 Vested (306,545 ) $ 14.01 Canceled (7,332 ) $ 17.62 Non-vested at September 30, 2016 664,208 $ 15.36 For the three months ended September 30, 2016 and 2015 , the amounts charged to expenses for all stock-based compensation arrangements totaled approximately $1.1 million and $1.3 million , respectively. For the nine months ended September 30, 2016 and 2015 , the amounts charged to expenses for all stock-based compensation arrangements totaled approximately $3.6 million and $3.5 million , respectively.

Capital of the Operating Partne

Capital of the Operating Partnership	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Capital of the Operating Partnership	Capital of the Operating Partnership As of September 30, 2016 , the Operating Partnership had 120,966,073 OP Units outstanding. ROIC owned an approximate 90.2% partnership interest in the Operating Partnership at September 30, 2016 , or 109,156,012 OP Units. The remaining 11,810,061 OP Units are owned by other limited partners. A share of ROIC’s common stock and an OP unit have essentially the same economic characteristics as they share equally in the total net income or loss and distributions of the Operating Partnership. As of September 30, 2016 , subject to certain exceptions, holders are able to redeem their OP Units, at the option of ROIC, for cash or for unregistered shares of ROIC common stock on a one -for-one basis. If cash is paid in the redemption, the redemption price is equal to the average closing price on the NASDAQ Stock Market for shares of ROIC’s common stock over the ten consecutive trading days immediately preceding the date a redemption notice is received by ROIC. During the year ended December 31, 2015 , in connection with the acquisition of Bellevue Marketplace, the property formerly known as Sternco Shopping Center, the Operating Partnership issued 1,946,483 OP Units whereby the Operating Partnership was required to deliver cash in exchange for the OP Units upon redemption if such OP Units were redeemed on or before January 31, 2016 (“Redeemable OP Units”). These Redeemable OP Units were previously classified as mezzanine equity as of December 31, 2015 because, as of such date, ROIC could be required to deliver cash upon the redemption of such OP Units. During the nine months ended September 30, 2016 , the Company received notices of redemption for 1,828,825 Redeemable OP Units. The Company redeemed the OP Units in cash at a price of $17.30 , in accordance with the Third Amendment to the Second Amended and Restated Agreement of Limited Partnership, as amended, of the Operating Partnership, and accordingly, a total of approximately $31.6 million was paid to the holders of the respective Redeemable OP Units. The remaining 117,658 Redeemable OP Units are treated as permanent equity as ROIC now has the option, in its sole discretion, to settle the redemption of the OP Units in cash or unregistered shares of ROIC common stock. During the nine months ended September 30, 2016 , ROIC received notices of redemption for a total of 991,550 OP Units (excluding Redeemable OP Units, described above). ROIC elected to redeem 613,762 OP Units for shares of ROIC common stock on a one -for-one basis, and accordingly, 613,762 shares of ROIC common stock were issued. ROIC elected to redeem the remaining 377,788 OP Units in cash. The redemption value of outstanding OP Units owned by the limited partners as of September 30, 2016 , not including ROIC, had such units been redeemed at September 30, 2016 , was approximately $260.8 million , calculated based on the average closing price on the NASDAQ Stock Market of ROIC common stock for the ten consecutive trading days immediately preceding September 30, 2016 , which amounted to $22.08 per share. Retail Opportunity Investments GP, LLC, ROIC’s wholly-owned subsidiary, is the sole general partner of the Operating Partnership, and as the parent company, ROIC has the full and complete authority over the Operating Partnership’s day-to-day management and control. As the sole general partner of the Operating Partnership, ROIC effectively controls the ability to issue common stock of ROIC upon redemption of any OP Units. The redemption provisions that permit ROIC to settle the redemption of OP Units in either cash or common stock, in the sole discretion of ROIC, are further evaluated in accordance with applicable accounting guidance to determine whether temporary or permanent equity classification on the balance sheet is appropriate. The Company evaluated this guidance, including the ability, in its sole discretion, to settle in unregistered shares of common stock, and determined that the OP Units meet the requirements to qualify for presentation as permanent equity.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company follows the FASB guidance that defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. The guidance applies to reported balances that are required or permitted to be measured at fair value under existing accounting pronouncements; accordingly, the standard does not require any new fair value measurements of reported balances. The guidance emphasizes that fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, the guidance establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy). Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. The following disclosures of estimated fair value were determined by management, using available market information and appropriate valuation methodologies as discussed in Note 1. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts realizable upon disposition of the financial instruments. The use of different market assumptions or estimation methodologies may have a material effect on the estimated fair value amounts. The carrying values of cash and cash equivalents, restricted cash, tenant and other receivables, deposits, prepaid expenses, other assets, accounts payable and accrued expenses are reasonable estimates of their fair values because of the short-term nature of these instruments. The carrying values of the term loan and credit facility are deemed to be at fair value since the outstanding debt is directly tied to monthly LIBOR contracts. The fair value of the outstanding Senior Notes Due 2026 approximates carrying value at September 30, 2016 . The fair value, based on inputs not quoted on active markets, but corroborated by market data, or Level 2, of the outstanding Senior Notes Due 2024 at September 30, 2016 was approximately $252.8 million . The fair value, based on inputs not quoted on active markets, but corroborated by market data, or Level 2, of the outstanding Senior Notes Due 2023 at September 30, 2016 was approximately $272.5 million . Assumed mortgage notes payable were recorded at their fair value at the time they were assumed and were estimated to have a fair value of approximately $36.7 million with an interest rate range of 3.3% to 3.9% and a weighted average interest rate of 3.5% as of September 30, 2016 . Mortgage notes payable originated by the Company were estimated to have a fair value of approximately $34.6 million with an interest rate of 3.9% as of September 30, 2016 . These fair value measurements fall within level 3 of the fair value hierarchy. Derivative and Hedging Activities The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The following is a summary of the terms of the Company’s interest rate swaps as of September 30, 2016 (in thousands): Swap Counterparty Notional Amount Effective Date Maturity Date Bank of Montreal $ 50,000 1/29/2016 1/31/2019 Regions Bank $ 50,000 2/29/2016 1/31/2019 The effective portion of changes in the fair value of derivatives that are designated as cash flow hedges are recorded in accumulated other comprehensive income (“AOCI”) and will be subsequently reclassified into earnings during the period in which the hedged forecasted transaction affects earnings. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of the derivative. This analysis reflects the contractual terms of the derivative, including the period to maturity, and uses observable market-based inputs, including interest rate curves, and implied volatilities. The fair value of interest rate swaps is determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. The Company incorporated credit valuation adjustments to appropriately reflect both its own non-performance risk and the respective counterparty’s non-performance risk in the fair value measurements. In adjusting the fair value of its derivative contract for the effect of non-performance risk, the Company considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. However, as of September 30, 2016 , the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative position and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuation in its entirety is classified in Level 2 of the fair value hierarchy. The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall (in thousands). Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total September 30, 2016: Liabilities Derivative financial instruments $ — $ (145 ) $ — $ (145 ) Amounts paid, or received, to cash settle interest rate derivatives prior to their maturity date are recorded in AOCI at the cash settlement amount, and will be reclassified to interest expense as interest expense is recognized on the hedged debt. During the next twelve months, the Company estimates that $2.3 million will be reclassified as a non-cash increase to interest expense. The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet as of September 30, 2016 and December 31, 2015 , respectively (in thousands): Derivatives designed as hedging instruments Balance sheet location September 30, 2016 Fair Value December 31, 2015 Fair Value Interest rate products Other liabilities $ (145 ) $ — Derivatives in Cash Flow Hedging Relationships The table below details the location in the financial statements of the gain or loss recognized on interest rate derivatives designated as cash flow hedges for the three and nine months ended September 30, 2016 and 2015 , respectively (in thousands). Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Amount of gain (loss) recognized in OCI on derivative $ 416 $ — $ (402 ) $ — Amount of loss reclassified from accumulated OCI into interest $ 628 $ 535 $ 1,861 $ 1,604

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies In the normal course of business, from time to time, the Company is involved in legal actions relating to the ownership and operations of its properties. In management’s opinion, the liabilities, if any, that ultimately may result from such legal actions are not expected to have a material adverse effect on the consolidated financial position, results of operations or liquidity of the Company. The following table represents the Company’s future minimum annual lease payments under operating leases as of September 30, 2016 (in thousands): Operating Leases Remaining 2016 $ 300 2017 1,222 2018 1,260 2019 1,265 2020 1,273 Thereafter 37,934 Total minimum lease payments $ 43,254 Tax Protection Agreements In connection with the acquisition of the remaining 51% of the partnership interests in the Terranomics Crossroads Associates, LP and the acquisition of 100% of the equity interest in SARM Five Points Plaza LLC in September 2013, the Company entered into Tax Protection Agreements with certain limited partners of the Operating Partnership. The Tax Protection Agreements require the Company, subject to certain exceptions, for a period of 12 years from closing, to indemnify the respective sellers receiving OP Units against certain tax liabilities incurred by them, as calculated pursuant to the respective Tax Protection Agreements. If the Company were to trigger the tax protection provisions under these agreements, the Company would be required to pay damages in the amount of the taxes owed by these limited partners (plus additional damages in the amount of the taxes incurred as a result of such payment). In connection with the acquisition of Wilsonville Town Center in December 2014, Iron Horse Plaza, Bellevue Marketplace and Warner Plaza in December 2015, and Magnolia Shopping Center and Casitas Plaza Shopping Center in March 2016 (more fully discussed in Footnote 2), the Company entered into Tax Protection Agreements with certain limited partners of the Operating Partnership. The Tax Protection Agreements require the Company, subject to certain exceptions, for a period of 10 years from closing, to indemnify the respective sellers receiving OP Units against certain tax liabilities incurred by them, as calculated pursuant to the respective Tax Protection Agreements. If the Company were to trigger the tax protection provisions under these agreements, the Company would be required to pay damages in the amount of the taxes owed by these limited partners (plus additional damages in the amount of the taxes incurred as a result of such payment).

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company has entered into several lease agreements with an officer of the Company, whereby pursuant to the lease agreements, the Company is provided the use of storage space. For both the three months ended September 30, 2016 and 2015 , the Company incurred approximately $11,000 of expenses relating to the agreements. For the nine months ended September 30, 2016 and 2015 , the Company incurred approximately $33,000 and $32,000 , respectively, of expenses relating to the agreements. These expenses were included in general and administrative expenses in the accompanying consolidated statements of operations.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 3, 2016, the Company acquired the property known as Trader Joe's at the Knolls, located in Long Beach, California, within the Los Angeles metropolitan area, for a purchase price of approximately $29.2 million . Trader Joe's at the Knolls is approximately 52,000 square feet and is anchored by Trader Joe's . The property was acquired with borrowings under the Company's unsecured revolving credit facility. On October 17, 2016, the Company acquired the property known as Bridle Trails Shopping Center, located in Kirkland, Washington, within the Seattle metropolitan area, for a purchase price of approximately $32.8 million . Bridle Trails Shopping Center is approximately 106,000 square feet and is anchored by Red Apple (Unified) Supermarket and Bartell Drugs. The property was acquired with borrowings under the Company's unsecured revolving credit facility. During the month ended October 31, 2016, the Company received notices of redemption for a total of 142,000 OP Units. ROIC elected to redeem the OP Units for shares of ROIC common stock on a one -for-one basis, and accordingly, 142,000 shares of ROIC common stock were issued. On October 25, 2016, ROIC’s board of directors declared a cash dividend on its common stock and a distribution on the Operating Partnership’s OP Units of $0.18 per share and per OP Unit, payable on December 29, 2016 to holders of record on December 15, 2016.

Organization, Basis of Presen22

Organization, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update (“ASU”) No. 2016-2, “Leases.” The pronouncement requires lessees to put most leases on their balance sheets but recognize expenses on their income statements. The guidance also eliminates real estate-specific provisions for all entities. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company is in the process of evaluating the impact this pronouncement will have on the Company’s consolidated financial statements. In September 2015, the FASB issued ASU No. 2015-16, “Business Combinations: Simplifying the Accounting for Measurement-Period Adjustments.” The pronouncement simplifies the accounting for adjustments made to provisional amounts recognized in a business combination by eliminating the requirement to retrospectively account for those adjustments. The pronouncement requires any adjustments to provisional amounts to be applied prospectively. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. The Company adopted the provisions of ASU No. 2015-16 effective January 1, 2016 and the adoption did not have a material impact on the consolidated financial statements of the Company. In April 2015, the FASB issued ASU No. 2015-3, “Interest – Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs.” The pronouncement requires reporting entities to present debt issuance costs related to a note as a direct deduction from the face amount of that note presented in the balance sheet. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. The Company adopted the provisions of ASU No. 2015-3 effective January 1, 2016 and retrospectively applied the guidance to its debt obligations for all periods presented, which resulted in the presentation of debt issuance costs associated with its term loan, unsecured revolving credit facility, Senior Notes Due 2024, Senior Notes Due 2023, and mortgage notes payable as a direct reduction from the carrying amount of the related debt instrument. These amounts were previously included in deferred charges, net on the Company’s consolidated balance sheets. See Note 4. In February 2015, the FASB issued ASU No. 2015-2, “Amendments to the Consolidation Analysis.” The pronouncement focuses to minimize situations under previously existing guidance in which a reporting entity was required to consolidate another legal entity in which that reporting entity did not have: (1) the ability through contractual rights to act primarily on its own behalf; (2) ownership of the majority of the legal entity's voting rights; or (3) the exposure to a majority of the legal entity's economic benefits. ASU 2015-2 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. ASU 2015-2 is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. The Company adopted the provisions of ASU No. 2015-2 effective January 1, 2016, and there were no changes to the Company’s consolidation conclusions as a result of the adoption of this guidance. In May 2014, the FASB issued ASU No. 2014-9, “Revenue from Contracts with Customers.” The pronouncement was issued to clarify the principles for recognizing revenue and to develop a common revenue standard and disclosure requirements for U.S. GAAP and International Financial Reporting Standards. The pronouncement is effective for fiscal years beginning after December 15, 2017. The Company is in the process of evaluating the impact this pronouncement will have on the Company’s consolidated financial statements.
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements are prepared on the accrual basis in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for complete financial statement disclosures. In the opinion of management, the consolidated financial statements include all adjustments necessary, which are of a normal and recurring nature, for the fair presentation of the Company’s financial position and the results of operations and cash flows for the periods presented. Results of operations for the three and nine month periods ended September 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 . It is suggested that these financial statements be read in conjunction with the financial statements and notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2015 . The consolidated financial statements include the accounts of the Company and those of its subsidiaries, which are wholly-owned or controlled by the Company. Entities which the Company does not control through its voting interest and entities which are variable interest entities (“VIEs”), but where it is not the primary beneficiary, are accounted for under the equity method. All significant intercompany balances and transactions have been eliminated. The Company follows the FASB guidance for determining whether an entity is a VIE and requires the performance of a qualitative rather than a quantitative analysis to determine the primary beneficiary of a VIE. Under this guidance, an entity would be required to consolidate a VIE if it has (i) the power to direct the activities that most significantly impact the entity’s economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. Effective January 1, 2016, the Company adopted the provisions of ASU No 2015-2, and as a result, concluded that the Operating Partnership is a VIE. The Company has concluded that because they have both the power and the rights to control the Operating Partnership, they are the primary beneficiary and are required to continue to consolidate the Operating Partnership. A non-controlling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to a parent. Non-controlling interests are required to be presented as a separate component of equity in the consolidated balance sheet and modify the presentation of net income by requiring earnings and other comprehensive income to be attributed to controlling and non-controlling interests.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the disclosure of contingent assets and liabilities, the reported amounts of assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the periods covered by the financial statements. The most significant assumptions and estimates relate to the purchase price allocations, depreciable lives, revenue recognition and the collectability of tenant receivables, other receivables, notes receivables, the valuation of performance-based restricted stock, stock options, and derivatives. Actual results could differ from these estimates.
Federal Income Taxes	Federal Income Taxes Commencing with ROIC’s taxable year ended December 31, 2010, ROIC elected to qualify as a REIT under Sections 856-860 of the Internal Revenue Code (the “Code”). Under those sections, a REIT that, among other things, distributes at least 90% of its REIT taxable income (determined without regard to the dividends paid deduction and by excluding net capital gains) and meets certain other qualifications prescribed by the Code will not be taxed on that portion of its taxable income that is distributed. Although ROIC may qualify as a REIT for U.S. federal income tax purposes, it is subject to state income or franchise taxes in certain states in which some of its properties are located. In addition, taxable income from non-REIT activities managed through the Company’s taxable REIT subsidiary (“TRS”), if any, is fully subject to U.S. federal, state and local income taxes. For all periods from inception through September 26, 2013 the Operating Partnership has been an entity disregarded from its sole owner, ROIC, for U.S. federal income tax purposes and as such has not been subject to federal income taxes. Effective September 27, 2013, the Operating Partnership issued OP Units in connection with the acquisitions of two shopping centers. Accordingly, the Operating Partnership ceased being a disregarded entity and instead is being treated as a partnership for U.S. federal income tax purposes. The Company follows the FASB guidance that defines a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The FASB also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. The Company records interest and penalties relating to unrecognized tax benefits, if any, as interest expense. As of September 30, 2016 , the statute of limitations for the tax years 2013 through and including 2015 remain open for examination by the Internal Revenue Service (“IRS”) and state taxing authorities. ROIC intends to make regular quarterly distributions to holders of its common stock. U.S. federal income tax law generally requires that a REIT distribute annually at least 90% of its REIT taxable income, without regard to the deduction for dividends paid and excluding net capital gains, and that it pay U.S. federal income tax at regular corporate rates to the extent that it annually distributes less than 100% of its net taxable income. ROIC intends to pay regular quarterly dividends to stockholders in an amount not less than its net taxable income, if and to the extent authorized by its board of directors. Before ROIC pays any dividend, whether for U.S. federal income tax purposes or otherwise, it must first meet both its operating requirements and its debt service on debt. If ROIC’s cash available for distribution is less than its net taxable income, it could be required to sell assets or borrow funds to make cash distributions or it may make a portion of the required distribution in the form of a taxable stock distribution or distribution of debt securities.
Real Estate Investments	Real Estate Investments All costs related to the improvement or replacement of real estate properties are capitalized. Additions, renovations and improvements that enhance and/or extend the useful life of a property are also capitalized. Expenditures for ordinary maintenance, repairs and improvements that do not materially prolong the normal useful life of an asset are charged to operations as incurred. The Company expenses transaction costs associated with business combinations in the period incurred. During the nine months ended September 30, 2016 and 2015 , capitalized costs related to the improvement or replacement of real estate properties were approximately $31.2 million and $18.8 million , respectively. Upon the acquisition of real estate properties, the fair value of the real estate purchased is allocated to the acquired tangible assets (consisting of land, buildings and improvements), and acquired intangible assets and liabilities (consisting of above-market and below-market leases and acquired in-place leases). Acquired lease intangible assets include above-market leases and acquired in-place leases, and acquired lease intangible liabilities represent below-market leases, in the accompanying consolidated balance sheets. The fair value of the tangible assets of an acquired property is determined by valuing the property as if it were vacant, which value is then allocated to land, buildings and improvements based on management’s determination of the relative fair values of these assets. In valuing an acquired property’s intangibles, factors considered by management include an estimate of carrying costs during the expected lease-up periods, and estimates of lost rental revenue during the expected lease-up periods based on management’s evaluation of current market demand. Management also estimates costs to execute similar leases, including leasing commissions, tenant improvements, legal and other related costs. Leasing commissions, legal and other related costs (“lease origination costs”) are classified as deferred charges in the accompanying consolidated balance sheets. The value of in-place leases is measured by the excess of (i) the purchase price paid for a property after adjusting existing in-place leases to market rental rates, over (ii) the estimated fair value of the property as if vacant. Above-market and below-market lease values are recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between the contractual amounts to be received and management’s estimate of market lease rates, measured over the terms of the respective leases that management deemed appropriate at the time of acquisition. Such valuations include a consideration of the non-cancellable terms of the respective leases as well as any applicable renewal periods. The fair values associated with below-market rental renewal options are determined based on the Company’s experience and the relevant facts and circumstances that existed at the time of the acquisitions. The value of the above-market and below-market leases is amortized to rental income, over the terms of the respective leases including option periods, if applicable. The value of in-place leases are amortized to expense over the remaining non-cancellable terms of the respective leases. If a lease were to be terminated prior to its stated expiration, all unamortized amounts relating to that lease would be recognized in operations at that time. The Company may record a bargain purchase gain if it determines that the purchase price for the acquired assets was less than the fair value. The Company will record a liability in situations where any part of the cash consideration is deferred. The amounts payable in the future are discounted to their present value. The liability is subsequently re-measured to fair value with changes in fair value recognized in the consolidated statements of operations. If, up to one year from the acquisition date, information regarding fair value of assets acquired and liabilities assumed is received and estimates are refined, appropriate property adjustments are made to the purchase price allocation in the period in which the amounts are adjusted.
Asset Impairment	Asset Impairment The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of the asset to aggregate future net cash flows (undiscounted and without interest) expected to be generated by the asset. If such assets are considered impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceed the fair value
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents are maintained at financial institutions and, at times, balances may exceed the federally insured limit by the Federal Deposit Insurance Corporation.
Restricted Cash	Restricted Cash The terms of several of the Company’s mortgage loans payable require the Company to deposit certain replacement and other reserves with its lenders. Such “restricted cash” is generally available only for property-level requirements for which the reserves have been established and is not available to fund other property-level or Company-level obligations.
Revenue Recognition	Revenue Recognition Management has determined that all of the Company’s leases with its various tenants are operating leases. Rental income is generally recognized based on the terms of leases entered into with tenants. In those instances in which the Company funds tenant improvements and the improvements are deemed to be owned by the Company, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. When the Company determines that the tenant allowances are lease incentives, the Company commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. Minimum rental income from leases with scheduled rent increases is recognized on a straight-line basis over the lease term. Percentage rent is recognized when a specific tenant’s sales breakpoint is achieved. Property operating expense recoveries from tenants of common area maintenance, real estate taxes and other recoverable costs are recognized in the period the related expenses are incurred. Termination fees (included in other income) are fees that the Company has agreed to accept in consideration for permitting certain tenants to terminate their lease prior to the contractual expiration date. The Company recognizes termination fees in accordance with Securities and Exchange Commission Staff Accounting Bulletin 104, “Revenue Recognition,” when the following conditions are met: (a) the termination agreement is executed; (b) the termination fee is determinable; (c) all landlord services pursuant to the terminated lease have been rendered; and (d) collectability of the termination fee is assured. Interest income is recognized as it is earned. Gains or losses on disposition of properties are recorded when the criteria for recognizing such gains or losses under GAAP have been met. The Company must make estimates as to the collectability of its accounts receivable related to base rent, straight-line rent, expense reimbursements and other revenues. Management analyzes accounts receivable by considering tenant creditworthiness, current economic trends, and changes in tenants’ payment patterns when evaluating the adequacy of the allowance for doubtful accounts receivable. The Company also provides an allowance for future credit losses of the deferred straight-line rents receivable.
Depreciation and Amortization	Depreciation and Amortization The Company uses the straight-line method for depreciation and amortization. Buildings are depreciated over the estimated useful lives which the Company estimates to be 39 - 40 years. Property improvements are depreciated over the estimated useful lives that range from 10 to 20 years. Furniture and fixtures are depreciated over the estimated useful lives that range from 3 to 10 years. Tenant improvements are amortized over the shorter of the life of the related leases or their useful life.
Deferred Leasing and Financing Costs	Deferred Leasing and Financing Costs Costs incurred in obtaining tenant leases (principally leasing commissions and acquired lease origination costs) are amortized ratably over the life of the tenant leases. Costs incurred in obtaining long-term financing are amortized ratably over the related debt agreement. The amortization of deferred leasing and financing costs is included in Depreciation and amortization and Interest expense and other finance expenses, respectively, in the Consolidated Statements of Operations.
Internal Capitalized Leasing Costs	Internal Capitalized Leasing Costs The Company capitalizes a portion of payroll-related costs related to its leasing personnel associated with new leases and lease renewals. These costs are amortized over the life of the respective leases.
Concentration Credit Risk	Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and tenant receivables. The Company places its cash and cash equivalents in excess of insured amounts with high quality financial institutions. The Company performs ongoing credit evaluations of its tenants and requires tenants to provide security deposits.
Earnings Per Share	Earnings Per Share Basic earnings per share (“EPS”) excludes the impact of dilutive shares and is computed by dividing net income by the weighted average number of shares of common stock outstanding for the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue shares of common stock were exercised or converted into shares of common stock and then shared in the earnings of the Company. For the three and nine months ended September 30, 2016 and 2015 , basic EPS was determined by dividing net income allocable to common stockholders for the applicable period by the weighted average number of shares of common stock outstanding during such period. Net income during the applicable period is also allocated to the time-based unvested restricted stock as these grants are entitled to receive dividends and are therefore considered a participating security. Time-based unvested restricted stock is not allocated net losses and/or any excess of dividends declared over net income; such amounts are allocated entirely to the common stockholders other than the holders of time-based unvested restricted stock. The performance-based restricted stock awards outstanding under the 2009 Plan described in Note 7 are excluded from the basic EPS calculation, as these units are not participating securities until they vest.
Share-Based Compensation	Stock-Based Compensation The Company has a stock-based employee compensation plan, which is more fully described in Note 7. The Company accounts for its stock-based compensation plans based on the FASB guidance which requires that compensation expense be recognized based on the fair value of the stock awards less estimated forfeitures. Restricted stock grants vest based upon the completion of a service period (“time-based grants”) and/or the Company meeting certain established market-specific financial performance criteria (“performance-based grants”). Time-based grants are valued according to the market price for the Company’s common stock at the date of grant. For performance-based grants, a Monte Carlo valuation model is used, taking into account the underlying contingency risks associated with the performance criteria. It is the Company’s policy to grant options with an exercise price equal to the quoted closing market price of stock on the grant date. Awards of stock options and time-based grants of stock are expensed as compensation on a straight-line basis over the vesting period. Depending on the terms of the agreement, certain awards of performance-based grants are expensed as compensation under the accelerated attribution method while certain are expensed as compensation on a straight-line basis over the vesting period. All awards of performance-based grants are recognized in income regardless of the results of the performance criteria.
Non-Controlling Interests – Redeemable OP Units / Redeemable Limited Partners	Non-Controlling Interests – Redeemable OP Units / Redeemable Limited Partners OP Units are classified as either mezzanine equity or permanent equity. If ROIC could be required to deliver cash in exchange for the OP Units upon redemption, such OP Units are referred to as Redeemable OP Units and presented in the mezzanine section of the balance sheet. If ROIC could, in its sole discretion, deliver cash or shares of ROIC common stock in exchange for the OP Units upon redemption, such OP Units are classified as permanent equity and presented in the equity section of the balance sheet.
Derivatives	Derivatives The Company records all derivatives on the balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. When the Company terminates a derivative for which cash flow hedging was being applied, the balance which was recorded in Other Comprehensive Income is amortized to interest expense over the remaining contractual term of the swap. The Company includes cash payments made to terminate interest rate swaps as an operating activity on the statement of cash flows, given the nature of the underlying cash flows that the derivative was hedging.
Segment Reporting	Segment Reporting The Company’s primary business is the ownership, management, and redevelopment of retail real estate properties. The Company reviews operating and financial information for each property on an individual basis and therefore, each property represents an individual operating segment. The Company evaluates financial performance using property operating income, defined as operating revenues (base rent and recoveries from tenants), less property and related expenses (property operating expenses and property taxes). The Company has aggregated the properties into one reportable segment as the properties share similar long-term economic characteristics and have other similarities including the fact that they are operated using consistent business strategies, are typically located in major metropolitan areas, and have similar tenant mixes.

Organization, Basis of Presen23

Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the reconciliation between basic and diluted EPS for ROIC (in thousands, except share data): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Numerator: Net income $ 8,215 $ 7,837 $ 25,778 $ 17,624 Less income attributable to non-controlling interests (813 ) (295 ) (2,645 ) (681 ) Less earnings allocated to unvested shares (67 ) (58 ) (204 ) (173 ) Net income available for common stockholders, basic $ 7,335 $ 7,484 $ 22,929 $ 16,770 Numerator: Net income $ 8,215 $ 7,837 $ 25,778 $ 17,624 Less earnings allocated to unvested shares (67 ) (58 ) (204 ) (173 ) Net income available for common stockholders, diluted $ 8,148 $ 7,779 $ 25,574 $ 17,451 Denominator: Denominator for basic EPS – weighted average common equivalent shares 107,745,991 96,722,628 102,460,495 94,479,375 OP units 12,015,200 3,771,314 11,767,965 3,825,710 Restricted stock awards - performance-based 166,949 163,167 147,751 153,191 Stock options 145,609 98,354 132,936 102,705 Denominator for diluted EPS – weighted average common equivalent shares 120,073,749 100,755,463 114,509,147 98,560,981 Earnings Per Unit The following table sets forth the reconciliation between basic and diluted earnings per unit for the Operating Partnership (in thousands, except unit data): Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Numerator: Net income $ 8,215 $ 7,837 $ 25,778 $ 17,624 Less earnings allocated to unvested shares (67 ) (58 ) (204 ) (173 ) Net income available to unitholders, basic and diluted $ 8,148 $ 7,779 $ 25,574 $ 17,451 Denominator: Denominator for basic earnings per unit – weighted average common equivalent units 119,761,191 100,493,942 114,228,460 98,305,085 Restricted stock awards – performance-based 166,949 163,167 147,751 153,191 Stock options 145,609 98,354 132,936 102,705 Denominator for diluted earnings per unit – weighted average common equivalent units 120,073,749 100,755,463 114,509,147 98,560,981

Real Estate Investments (Tables

Real Estate Investments (Tables)	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The financial information set forth below summarizes the Company’s purchase price allocation for the properties acquired during the nine months ended September 30, 2016 (in thousands). September 30, 2016 ASSETS Land $ 67,590 Building and improvements 210,858 Acquired lease intangible assets 14,887 Deferred charges 5,035 Assets acquired $ 298,370 LIABILITIES Mortgage notes assumed $ 17,618 Acquired lease intangible liabilities 26,631 Liabilities assumed $ 44,249
Business Acquisition, Pro Forma Information	The pro forma financial information set forth below is presented for informational purposes only and may not be indicative of what actual results of operations would have been had the transactions occurred at the beginning of 2015 , nor does it purport to represent the results of future operations (in thousands). Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Statement of operations: Revenues $ 45,634 $ 46,834 $ 142,220 $ 143,235 Net income attributable to Retail Opportunity Investments Corp. $ 7,436 $ 7,950 $ 23,360 $ 19,423
Condensed Income Statement	The following table summarizes the operating results included in the Company’s historical consolidated statement of operations for the three and nine months ended September 30, 2016 , for the properties acquired during the nine months ended September 30, 2016 (in thousands). Three Months Ended Nine Months Ended Statement of operations: Revenues $ 4,923 $ 8,180 Net income attributable to Retail Opportunity Investments Corp. $ 626 $ 948

Tenant Leases (Tables)

Tenant Leases (Tables)	9 Months Ended
	Sep. 30, 2016
Leases [Abstract]
Schedule of Future Minimum Base Rentals on Non-Cancellable Operating Leases	Future minimum rents to be received under non-cancellable leases as of September 30, 2016 are summarized as follows (in thousands): Minimum Rents Remaining 2016 $ 41,379 2017 157,584 2018 137,103 2019 115,455 2020 96,696 Thereafter 422,250 Total minimum lease payments $ 970,467 The following table represents the Company’s future minimum annual lease payments under operating leases as of September 30, 2016 (in thousands): Operating Leases Remaining 2016 $ 300 2017 1,222 2018 1,260 2019 1,265 2020 1,273 Thereafter 37,934 Total minimum lease payments $ 43,254

Mortgage Notes Payable, Credi26

Mortgage Notes Payable, Credit Facilities and Senior Notes (Tables)	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Schedule of Debt	The mortgage notes payable collateralized by respective properties and assignment of leases at September 30, 2016 and December 31, 2015 , respectively, were as follows (in thousands): Property Maturity Date Interest Rate September 30, 2016 December 31, 2015 Gateway Village III July 2016 6.10 % $ — $ 7,166 Bernardo Heights Plaza July 2017 5.70 % 8,265 8,404 Santa Teresa Village February 2018 6.20 % 10,442 10,613 Magnolia Shopping Center October 2018 5.50 % 9,179 — Casitas Plaza Shopping Center June 2022 5.32 % 7,483 — Diamond Hills Plaza October 2025 3.55 % 35,500 35,500 $ 70,869 $ 61,683 Mortgage premiums 1,208 922 Net unamortized deferred financing costs (443 ) (449 ) Total mortgage notes payable $ 71,634 $ 62,156
Schedule of Long-term Debt Instruments	The carrying value of the Company’s Senior Notes Due 2023 is as follows (in thousands): September 30, 2016 December 31, 2015 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (3,212 ) (3,482 ) Net unamortized deferred financing costs (1,895 ) (2,092 ) Senior Notes Due 2023: $ 244,893 $ 244,426 The carrying value of the Company’s Senior Notes Due 2024 is as follows (in thousands): September 30, 2016 December 31, 2015 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (2,967 ) (3,191 ) Net unamortized deferred financing costs (1,811 ) (1,976 ) Senior Notes Due 2024: $ 245,222 $ 244,833 The carrying values of the Company’s unsecured revolving credit facility were as follows (in thousands): September 30, 2016 December 31, 2015 Credit Facility $ 8,000 $ 135,500 Net unamortized deferred financing costs (2,627 ) (3,472 ) Credit Facility: $ 5,373 $ 132,028 The carrying value of the Company’s Senior Notes Due 2026 is as follows (in thousands): September 30, 2016 December 31, 2015 Principal amount $ 200,000 $ — Net unamortized deferred financing costs (268 ) — Senior Notes Due 2026: $ 199,732 $ — The carrying values of the Company’s term loan (the “term loan”) were as follows (in thousands): September 30, 2016 December 31, 2015 Term Loan $ 300,000 $ 300,000 Net unamortized deferred financing costs (906 ) (1,198 ) Term Loan: $ 299,094 $ 298,802

Stock Compensation for ROIC (Ta

Stock Compensation for ROIC (Tables)	9 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Restricted Stock Units Activity	A summary of the status of ROIC’s non-vested restricted stock awards as of September 30, 2016 , and changes during the nine months ended September 30, 2016 are presented below: Shares Weighted Average Grant Date Fair Value Non-vested at December 31, 2015 627,471 $ 14.39 Granted 350,614 $ 15.96 Vested (306,545 ) $ 14.01 Canceled (7,332 ) $ 17.62 Non-vested at September 30, 2016 664,208 $ 15.36

Fair Value of Financial Instr28

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Schedule of Derivative Instruments	The following is a summary of the terms of the Company’s interest rate swaps as of September 30, 2016 (in thousands): Swap Counterparty Notional Amount Effective Date Maturity Date Bank of Montreal $ 50,000 1/29/2016 1/31/2019 Regions Bank $ 50,000 2/29/2016 1/31/2019
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The table below presents the Company’s assets and liabilities measured at fair value on a recurring basis, aggregated by the level in the fair value hierarchy within which those measurements fall (in thousands). Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total September 30, 2016: Liabilities Derivative financial instruments $ — $ (145 ) $ — $ (145 )
Fair Value, by Balance Sheet Grouping	The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the balance sheet as of September 30, 2016 and December 31, 2015 , respectively (in thousands): Derivatives designed as hedging instruments Balance sheet location September 30, 2016 Fair Value December 31, 2015 Fair Value Interest rate products Other liabilities $ (145 ) $ —
Derivative Instruments, Gain (Loss)	The table below details the location in the financial statements of the gain or loss recognized on interest rate derivatives designated as cash flow hedges for the three and nine months ended September 30, 2016 and 2015 , respectively (in thousands). Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Amount of gain (loss) recognized in OCI on derivative $ 416 $ — $ (402 ) $ — Amount of loss reclassified from accumulated OCI into interest $ 628 $ 535 $ 1,861 $ 1,604

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum rents to be received under non-cancellable leases as of September 30, 2016 are summarized as follows (in thousands): Minimum Rents Remaining 2016 $ 41,379 2017 157,584 2018 137,103 2019 115,455 2020 96,696 Thereafter 422,250 Total minimum lease payments $ 970,467 The following table represents the Company’s future minimum annual lease payments under operating leases as of September 30, 2016 (in thousands): Operating Leases Remaining 2016 $ 300 2017 1,222 2018 1,260 2019 1,265 2020 1,273 Thereafter 37,934 Total minimum lease payments $ 43,254

Organization, Basis of Presen30

Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)segment	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Capitalized costs related to the improvement or replacement of real estate properties			$ 31,200	$ 18,800
Number of years from acquisition date (years)			1 year
Acquisition transaction costs	$ 179	$ 91	$ 613	507
Allowance for doubtful accounts	5,100		5,100		$ 4,500
Payroll related costs capitalized	$ 313	$ 279	$ 931	$ 804
Number of reportable segments | segment			1
Minimum | Building
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			39 years
Minimum | Property Improvements
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			10 years
Minimum | Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			3 years
Maximum | Building
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			40 years
Maximum | Property Improvements
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			20 years
Maximum | Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Useful life of PPE (in years)			10 years

Organization, Basis of Presen31

Organization, Basis of Presentation and Summary of Significant Accounting Policies (Reconciliation Between Basic and Diluted EPS) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 8,215	$ 7,837	$ 25,778	$ 17,624
Net income attributable to non-controlling interests	813	295	2,645	681
Less earnings allocated to unvested shares	(67)	(58)	(204)	(173)
Net income available for common stockholders, basic	7,335	7,484	22,929	16,770
Less earnings allocated to unvested shares	(67)	(58)	(204)	(173)
Net income available for common stockholders, diluted	$ 8,148	$ 7,779	$ 25,574	$ 17,451
Denominator for basic EPS – weighted average common equivalent shares (in shares)	107,745,991	96,722,628	102,460,495	94,479,375
Denominator for diluted EPS – weighted average common equivalent shares (in shares)	120,073,749	100,755,463	114,509,147	98,560,981
Retail Opportunity Investments Partnership L.P.
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 8,215	$ 7,837	$ 25,778	$ 17,624
Less earnings allocated to unvested shares	(67)	(58)	(204)	(173)
Net income available to unitholders, basic and diluted	$ 8,148	$ 7,779	$ 25,574	$ 17,451
Denominator for basic EPS – weighted average common equivalent shares (in shares)	119,761,191	100,493,942	114,228,460	98,305,085
Denominator for diluted EPS – weighted average common equivalent shares (in shares)	120,073,749	100,755,463	114,509,147	98,560,981
OP units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
OP units (in shares)	12,015,200	3,771,314	11,767,965	3,825,710
Restricted stock awards – performance-based
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	166,949	163,167	147,751	153,191
Restricted stock awards – performance-based | Retail Opportunity Investments Partnership L.P.
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	166,949	163,167	147,751	153,191
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	145,609	98,354	132,936	102,705
Stock options | Retail Opportunity Investments Partnership L.P.
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements (in shares)	145,609	98,354	132,936	102,705

Real Estate Investments (Detail

Real Estate Investments (Details Textual) ft² in Thousands, $ in Millions	Sep. 15, 2016USD ($)ft²	Jul. 14, 2016USD ($)ft²	Jun. 01, 2016USD ($)ft²	Apr. 28, 2016USD ($)ft²	Mar. 10, 2016USD ($)ft²propertyshares
Magnolia Shopping Center and Casitas Plaza Shopping Center
Business Acquisition [Line Items]
Number of properties acquired | property					2
Purchase price					$ 64.3
Units issued for the acquisition (shares) | shares					2,434,833
Fair value of the units acquired					$ 46.1
Magnolia Shopping Center
Business Acquisition [Line Items]
Area of real estate property acquired | ft²					116
Loan incurred for acquisition					$ 9.3
Casitas Plaza Shopping Center
Business Acquisition [Line Items]
Area of real estate property acquired | ft²					97
Loan incurred for acquisition					$ 7.6
Portland, Oregon | Rose City Center [Member]
Business Acquisition [Line Items]
Purchase price	$ 12.8
Area of real estate property acquired | ft²	61
Santa Clarita, California | Bouquet Center
Business Acquisition [Line Items]
Purchase price				$ 59
Area of real estate property acquired | ft²				149
Westlake Village, California | North Ranch Shopping Center
Business Acquisition [Line Items]
Purchase price			$ 122.8
Area of real estate property acquired | ft²			147
Monterey, California [Member] | Monterey Center
Business Acquisition [Line Items]
Purchase price		$ 12.1
Area of real estate property acquired | ft²		26

Real Estate Investments (Purcha

Real Estate Investments (Purchase Price Allocation of Properties Acquired) (Details) $ in Thousands	Sep. 30, 2016USD ($)
ASSETS
Land	$ 67,590
Building and improvements	210,858
Acquired lease intangible assets	14,887
Deferred charges	5,035
Assets acquired	298,370
LIABILITIES
Mortgage notes assumed	17,618
Acquired lease intangible liabilities	26,631
Liabilities assumed	$ 44,249

Real Estate Investments (Pro Fo

Real Estate Investments (Pro Forma Financial Information - Results of Operations Had the Acquisitions Occurred at the Beginning of the Year) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of operations:
Revenues	$ 45,634	$ 46,834	$ 142,220	$ 143,235
Net income attributable to Retail Opportunity Investments Corp.	$ 7,436	$ 7,950	$ 23,360	$ 19,423

Real Estate Investments (Operat

Real Estate Investments (Operating Results Included in the Company's Historical Consolidated Statement of Operations for Properties Acquired During the Reported Periods) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Business Acquisition [Line Items]
Revenues	$ 59,354	$ 50,077	$ 174,119	$ 141,414
Net Income Attributable to Retail Opportunity Investments Corp.	7,402	$ 7,542	23,133	$ 16,943
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Revenues	4,923		8,180
Net Income Attributable to Retail Opportunity Investments Corp.	$ 626		$ 948

Tenant Leases Minimum Future Re

Tenant Leases Minimum Future Rentals to be Received under Non-cancellable Leases (Details) $ in Thousands	Sep. 30, 2016USD ($)
Leases [Abstract]
Remaining 2,016	$ 41,379
2,017	157,584
2,018	137,103
2,019	115,455
2,020	96,696
Thereafter	422,250
Total minimum lease payments	$ 970,467

Mortgage Notes Payable, Credi37

Mortgage Notes Payable, Credit Facilities and Senior Notes (Details Textual)	Apr. 01, 2016USD ($)	Mar. 10, 2016USD ($)loan	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Jul. 26, 2016	Dec. 31, 2015USD ($)	Sep. 29, 2015USD ($)	Dec. 03, 2014USD ($)	Dec. 09, 2013USD ($)
Debt Instrument [Line Items]
Long term debt			$ 70,869,000		$ 70,869,000			$ 61,683,000
Number of loans assumed | loan		2
Principal repayments on mortgages					7,630,000	$ 65,156,000
Term Loan Agreement
Debt Instrument [Line Items]
Long term debt			300,000,000		300,000,000			300,000,000	$ 300,000,000
Additional borrowing capacity									$ 200,000,000
Remaining borrowing capacity			$ 0		0
Interest rate during period (percentage)			1.60%
Senior Notes Due 2024
Debt Instrument [Line Items]
Long term debt			$ 250,000,000		250,000,000			250,000,000
Debt instrument, face amount										$ 250,000,000
Interest rate (percentage)										4.00%
Interest expense, debt			2,500,000	$ 2,500,000	7,500,000	7,500,000
Amortization of debt discount (premium)			75,000	72,000	224,000	215,000
Debt issuance costs, gross										$ 2,200,000
Senior Notes Due 2023
Debt Instrument [Line Items]
Long term debt			250,000,000		250,000,000			250,000,000
Debt instrument, face amount											$ 250,000,000
Interest rate (percentage)											5.00%
Interest expense, debt			3,100,000	3,100,000	9,400,000	9,400,000
Amortization of debt discount (premium)			91,000	$ 87,000	270,000	$ 256,000
Debt issuance costs, gross											$ 2,600,000
Gateway Shopping Center WA
Debt Instrument [Line Items]
Principal repayments on mortgages	$ 7,100,000
Magnolia Shopping Center
Debt Instrument [Line Items]
Long term debt			$ 9,179,000		$ 9,179,000			0
Loan incurred for acquisition		$ 9,300,000
Interest rate (percentage)			5.50%		5.50%
Casitas Plaza Shopping Center
Debt Instrument [Line Items]
Long term debt			$ 7,483,000		$ 7,483,000			0
Loan incurred for acquisition		$ 7,600,000
Interest rate (percentage)			5.32%		5.32%
Federal Funds Effective Swap Rate | Term Loan Agreement
Debt Instrument [Line Items]
Variable rate (percentage)					0.50%
Eurodollar | Term Loan Agreement
Debt Instrument [Line Items]
Variable rate (percentage)					1.10%
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 500,000,000		$ 500,000,000
Long-term, line of credit			8,000,000		8,000,000			135,500,000
Remaining borrowing capacity			$ 492,000,000		$ 492,000,000
Line of credit facility, interest rate during the period ( percentage)			1.50%
Revolving Credit Facility | Federal Funds Effective Swap Rate | Loan Agreements
Debt Instrument [Line Items]
Variable rate (percentage)					0.50%
Revolving Credit Facility | Eurodollar | Loan Agreements
Debt Instrument [Line Items]
Variable rate (percentage)					1.00%
Loan Agreements
Debt Instrument [Line Items]
Commitment fee (percentage)					0.20%
Fronting fee (percentage)			0.125%		0.125%
Accordion Feature | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,000,000,000		$ 1,000,000,000
Senior Notes | Senior Notes Due 2026
Debt Instrument [Line Items]
Long term debt								$ 0
Debt instrument, face amount			200,000,000		200,000,000
Interest rate (percentage)							3.95%
Interest expense, debt			200,000		200,000
Debt issuance costs, gross			$ 300,000		$ 300,000

Mortgage Notes Payable (Details

Mortgage Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long term debt	$ 70,869	$ 61,683
Mortgage premiums	1,208	922
Net unamortized deferred financing costs	(443)	(449)
Total mortgage notes payable	$ 71,634	62,156
Gateway Village III
Debt Instrument [Line Items]
Interest Rate	6.10%
Long term debt	$ 0	7,166
Bernardo Heights Plaza
Debt Instrument [Line Items]
Interest Rate	5.70%
Long term debt	$ 8,265	8,404
Santa Teresa Village
Debt Instrument [Line Items]
Interest Rate	6.20%
Long term debt	$ 10,442	10,613
Magnolia Shopping Center
Debt Instrument [Line Items]
Interest Rate	5.50%
Long term debt	$ 9,179	0
Casitas Plaza Shopping Center
Debt Instrument [Line Items]
Interest Rate	5.32%
Long term debt	$ 7,483	0
Diamond Hills Plaza
Debt Instrument [Line Items]
Interest Rate	3.55%
Long term debt	$ 35,500	$ 35,500

Mortgage Notes Payable, Credi39

Mortgage Notes Payable, Credit Facilities and Senior Notes (Carrying Value of Debt) (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015	Sep. 29, 2015	Dec. 03, 2014	Dec. 09, 2013
Debt Instrument [Line Items]
Long term debt	$ 70,869,000	$ 61,683,000
Net unamortized deferred financing costs	(443,000)	(449,000)
Credit Facility:	5,373,000	132,028,000
Term Loan Agreement
Debt Instrument [Line Items]
Long term debt	300,000,000	300,000,000	$ 300,000,000
Net unamortized deferred financing costs	(906,000)	(1,198,000)
Term Loan:	299,094,000	298,802,000
Senior Notes Due 2024
Debt Instrument [Line Items]
Debt instrument, face amount				$ 250,000,000
Long term debt	250,000,000	250,000,000
Unamortized debt discount	(2,967,000)	(3,191,000)
Net unamortized deferred financing costs	(1,811,000)	(1,976,000)
Senior Notes	245,222,000	244,833,000
Senior Notes Due 2023
Debt Instrument [Line Items]
Debt instrument, face amount					$ 250,000,000
Long term debt	250,000,000	250,000,000
Unamortized debt discount	(3,212,000)	(3,482,000)
Net unamortized deferred financing costs	(1,895,000)	(2,092,000)
Senior Notes	244,893,000	244,426,000
Senior Notes Due 2026
Debt Instrument [Line Items]
Senior Notes	199,732,000	0
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term, line of credit	8,000,000	135,500,000
Net unamortized deferred financing costs	(2,627,000)	(3,472,000)
Credit Facility:	5,373,000	132,028,000
Senior Notes | Senior Notes Due 2026
Debt Instrument [Line Items]
Debt instrument, face amount	200,000,000
Long term debt		0
Net unamortized deferred financing costs	(268,000)	0
Senior Notes	$ 199,732,000	$ 0

Preferred Stock of ROIC (Detail

Preferred Stock of ROIC (Details Textual) - shares	Sep. 30, 2016	Dec. 31, 2015
Equity [Abstract]
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Preferred Stock, Shares Outstanding	0	0

Common Stock of ROIC (Details T

Common Stock of ROIC (Details Textual)	Jul. 12, 2016USD ($)shares	Sep. 19, 2014USD ($)agreement$ / shares	Sep. 30, 2016USD ($)$ / sharesshares	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)$ / sharesshares	Dec. 31, 2015$ / shares	Jul. 31, 2013USD ($)
Class of Stock [Line Items]
Proceeds from the sale of common stock	$ 133,000,000		$ 184,881,000	$ 101,293,000
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001		$ 0.0001	$ 0.0001
Registration expenditures			$ 6,983,000	$ 4,286,000
Stock repurchase program, authorized amount							$ 50,000,000
Sales Agreement
Class of Stock [Line Items]
Shares sold during the year (shares) | shares			2,202,254		2,746,821
Proceeds from the sale of common stock			$ 45,600,000		$ 55,500,000
Number of sales agreements entered into | agreement		4
Common stock, par value (in dollars per share) | $ / shares		$ 0.0001
Common shares that may be sold under a sales agreement, aggregate offering price, maximum		$ 100,000,000
Registration expenditures			584,000		733,000
Revolving Credit Facility
Class of Stock [Line Items]
Maximum borrowing capacity			$ 500,000,000		$ 500,000,000
Common Stock | Public Offering [Member]
Class of Stock [Line Items]
Shares sold during the year (shares) | shares	6,555,000

Stock Compensation for ROIC (De

Stock Compensation for ROIC (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1.1	$ 1.3	$ 3.6	$ 3.5
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)			350,614
The 2009 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding stock maximum (percentage)			7.50%
Maximum number of shares per employee (shares)			4,000,000
The 2009 Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)			350,614
The 2009 Plan | Performance Shares | Vesting on January 1, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)			121,150

Stock Compensation for ROIC (St

Stock Compensation for ROIC (Status of Non-vested Restricted Stock Awards) (Details) - Restricted Stock	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Shares
Beginning balance (shares) | shares	627,471
Granted (shares) | shares	350,614
Vested (shares) | shares	(306,545)
Canceled (shares) | shares	(7,332)
Ending balance (shares) | shares	664,208
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 14.39
Granted (in dollars per share) | $ / shares	15.96
Vested (in dollars per share) | $ / shares	14.01
Canceled (in dollars per share) | $ / shares	17.62
Ending balance (in dollars per share) | $ / shares	$ 15.36

Capital of the Operating Part44

Capital of the Operating Partnership (Details Textual)		9 Months Ended
		Sep. 30, 2016USD ($)$ / sharesshares	Dec. 31, 2015shares
Limited Partners' Capital Account [Line Items]
Limited Partnership (LP), ownership interest ( percentage)		90.20%
Remaining units (in shares)	[1]	120,966,073
Equity, redemption basis		1
Redemption price, threshold consecutive trading days (days)		10 days
Temporary equity transferred to permanent equity (in shares)		117,658
Equity redemption of OP Units, Total Units (in shares)		991,550
OP Unit redemption (in shares)		613,762
Equity redemption, cash (in shares)		377,788
OP Units
Limited Partners' Capital Account [Line Items]
Redemption value (usd per share) | $ / shares		$ 22.08
Non-controlling interest redemption value | $		$ 260,800,000
Bellevue Marketplace [Member] | OP Units Classified as Mezzanine Equity
Limited Partners' Capital Account [Line Items]
Temporary equity, shares issued (shares)			1,946,483
Redeemable OP unit redemption (shares) | $		$ 1,828,825
Sternco Shopping Center | OP Units Classified as Mezzanine Equity
Limited Partners' Capital Account [Line Items]
Redemption value (usd per share) | $ / shares		$ 17.30
Payments for redemption of redeemable OP units | $		$ 31,600,000
ROIC Capital | Retail Opportunity Investments Partnership L.P.
Limited Partners' Capital Account [Line Items]
Remaining units (in shares)	[1]	109,156,012	99,531,034
OP Unit redemption (in shares)	[1]	613,762
Limited Partner’s Capital | Retail Opportunity Investments Partnership L.P.
Limited Partners' Capital Account [Line Items]
Remaining units (in shares)	[2]	11,810,061	12,195,603
OP Unit redemption (in shares)	[2]	(613,762)
[1]	Consists of general and limited partnership interests held by ROIC.
[2]	Consists of limited partnership interests held by third parties.

Fair Value of Financial Instr45

Fair Value of Financial Instruments (Details Textual) $ in Millions	9 Months Ended
	Sep. 30, 2016USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate cash flow hedge reclassified as non-cash increase to interest expense in the next 12 months	$ 2.3
Originated Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.90%
Minimum | Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.30%
Maximum | Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.90%
Weighted Average | Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	3.50%
Significant Other Observable Inputs (Level 2) | Senior Notes 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	$ 252.8
Significant Other Observable Inputs (Level 2) | Senior Notes Due 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long term debt	272.5
Significant Unobservable Inputs (Level 3) | Assumed Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of note payable	36.7
Significant Unobservable Inputs (Level 3) | Originated Mortgage Notes Payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of note payable	$ 34.6

Fair Value of Financial Instr46

Fair Value of Financial Instruments (Interest Rate Swaps) (Details) - Interest Rate Swap	9 Months Ended
	Sep. 30, 2016USD ($)
Bank of Montreal
Derivatives, Fair Value [Line Items]
Notional Amount	$ 50,000,000
Effective Date	Jan. 29, 2016
Maturity Date	Jan. 31, 2019
Regions Bank
Derivatives, Fair Value [Line Items]
Notional Amount	$ 50,000,000
Effective Date	Feb. 29, 2016
Maturity Date	Jan. 31, 2019

Fair Value of Financial Instr47

Fair Value of Financial Instruments (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - Fair Value, Measurements, Recurring $ in Thousands	Sep. 30, 2016USD ($)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative financial instruments	$ (145)
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative financial instruments	0
Significant Other Observable Inputs (Level 2)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative financial instruments	(145)
Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Derivative financial instruments	$ 0

Fair Value of Financial Instr48

Fair Value of Financial Instruments (Balance Sheet Classification) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Other Liabilities | Derivatives designed as hedging instruments | Interest Rate Contract
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate products	$ (145)	$ 0

(Location of Gain or Loss on In

(Location of Gain or Loss on Interest Rate Derivatives Designated as Cash Flow Hedges) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Amount of gain (loss) recognized in OCI on derivative	$ 416	$ 0	$ (402)	$ 0
Amount of loss reclassified from accumulated OCI into interest	$ 628	$ 535	$ 1,861	$ 1,604

Commitments and Contingencies50

Commitments and Contingencies (Details Textual)	1 Months Ended
	Sep. 30, 2013
Terranomics Crossroads Associates LP
Income Tax Contingency [Line Items]
Ownership percentage	51.00%
SARM Five Points LLC
Income Tax Contingency [Line Items]
Ownership percentage	100.00%
Terranomics Crossroads Associates LP Member and SARM Five Points LLC
Income Tax Contingency [Line Items]
Tax protection agreements period	12 years
Wilsonville Town Center
Income Tax Contingency [Line Items]
Tax protection agreements period	10 years

Commitments and Contingencies51

Commitments and Contingencies (Future Minimum Annual Lease Payments Under Operating Leases) (Details) $ in Thousands	Sep. 30, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remaining 2,016	$ 300
2,017	1,222
2,018	1,260
2,019	1,265
2,020	1,273
Thereafter	37,934
Total minimum lease payments	$ 43,254

Related Party Transactions (Det

Related Party Transactions (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
General and Administrative Expense | Related Party Lease Agreements
Related Party Transaction [Line Items]
SG&A expense	$ 11,000	$ 11,000	$ 33,000	$ 32,000

Subsequent Events (Details Text

Subsequent Events (Details Textual) $ / shares in Units, ft² in Thousands, $ in Thousands	Oct. 25, 2016$ / shares	Oct. 15, 2016USD ($)ft²	Oct. 03, 2016USD ($)ft²	Jul. 12, 2016USD ($)	Oct. 31, 2016shares	Sep. 30, 2016USD ($)shares	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)shares
Subsequent Event [Line Items]
Proceeds from the sale of common stock				$ 133,000		$ 184,881	$ 101,293
OP Unit redemption (in shares) | shares						613,762
Equity, redemption basis						1
Registration expenditures						$ (6,983)	$ (4,286)
Subsequent Event [Member]
Subsequent Event [Line Items]
Shares sold during the year (shares) | shares					142,000
OP Unit redemption (in shares) | shares					142,000
Equity, redemption basis					1
Dividend declared (usd per share) | $ / shares	$ 0.18
Sales Agreement
Subsequent Event [Line Items]
Shares sold during the year (shares) | shares						2,202,254		2,746,821
Proceeds from the sale of common stock						$ 45,600		$ 55,500
Registration expenditures						$ (584)		$ (733)
Long Beach, California [Member] | Trader Joe's at the Knolls [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase price			$ 29,200
Area of real estate property acquired | ft²			52
Kirkland, Washington [Member] | Bridle Trail Shopping Center [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Purchase price		$ 32,800
Area of real estate property acquired | ft²		106