Retail Opportunity Investments (ROIC) 10-K 24 Feb 16 2015 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 19, 2016	Jun. 30, 2015
Document Information [Line Items]
Entity Registrant Name	Retail Opportunity Investments Corp
Trading Symbol	roic
Document Type	10-K
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		99,590,468
Entity Public Float			$ 1,400,000,000
Amendment Flag	false
Entity Central Index Key	1,407,623
Entity Current Reporting Status	Yes
Entity Voluntary Filers	Yes
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Retail Opportunity Investments Partnership L.P. [Member]
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	Dec. 31, 2015	Dec. 31, 2014
Real Estate Investments:
Land	$ 669,307	$ 550,078
Building and improvements	1,627,310	1,235,820
Total real estate investments	2,296,617	1,785,898
Less: accumulated depreciation	134,311	88,173
Real Estate Investments, net	2,162,306	1,697,725
Cash and cash equivalents	8,844	10,773
Restricted cash	227	514
Tenant and other receivables, net	28,652	23,025
Deposits	500	4,500
Acquired lease intangible asset, net of accumulated amortization	66,942	71,433
Prepaid expenses	1,953	2,454
Deferred charges, net of accumulated amortization	39,316	39,731
Other	1,895	1,541
Total assets	2,310,635	1,851,696
Liabilities:
Term loan	300,000
Credit facility	135,500	156,500
Mortgage notes payable	62,605	94,183
Acquired lease intangibles liability, net of accumulated amortization	124,861	118,359
Accounts payable and accrued expenses	13,205	12,173
Tenants' security deposits	5,085	3,961
Other liabilities	11,036	11,043
Total liabilities	$ 1,145,619	$ 888,914
Commitments and contingencies
Non-controlling interests – redeemable OP Units	$ 33,674
Equity:
Preferred stock, $.0001 par value 50,000,000 shares authorized; none issued and outstanding	0	$ 0
Common stock, $.0001 par value 500,000,000 shares authorized; and 99,531,034 and 92,991,333 shares issued and outstanding at December 31, 2015 and 2014, respectively	10	9
Additional paid-in-capital	1,166,395	1,013,561
Dividends in excess of earnings	(122,991)	(80,976)
Accumulated other comprehensive loss	(6,743)	(8,882)
Total Retail Opportunity Investments Corp. stockholders' equity	1,036,671	923,712
Non-controlling interests	94,671	39,070
Total equity	1,131,342	962,782
Total liabilities and equity	2,310,635	1,851,696
Retail Opportunity Investments Partnership L.P. [Member]
Real Estate Investments:
Land	669,307	550,078
Building and improvements	1,627,310	1,235,820
Total real estate investments	2,296,617	1,785,898
Less: accumulated depreciation	134,311	88,173
Real Estate Investments, net	2,162,306	1,697,725
Cash and cash equivalents	8,844	10,773
Restricted cash	227	514
Tenant and other receivables, net	28,652	23,025
Deposits	500	4,500
Acquired lease intangible asset, net of accumulated amortization	66,942	71,433
Prepaid expenses	1,953	2,454
Deferred charges, net of accumulated amortization	39,316	39,731
Other	1,895	1,541
Total assets	2,310,635	1,851,696
Liabilities:
Term loan	300,000
Credit facility	135,500	156,500
Mortgage notes payable	62,605	94,183
Acquired lease intangibles liability, net of accumulated amortization	124,861	118,359
Accounts payable and accrued expenses	13,205	12,173
Tenants' security deposits	5,085	3,961
Other liabilities	11,036	11,043
Total liabilities	$ 1,145,619	$ 888,914
Commitments and contingencies
Non-controlling interests – redeemable OP Units	$ 33,674
Equity:
ROIC capital (consists of general and limited partnership interests held by ROIC)	1,043,414	$ 932,594
Limited partners’ capital (consists of limited partnership interests held by third parties)	94,671	39,070
Accumulated other comprehensive loss	(6,743)	(8,882)
Total equity	1,131,342	962,782
Total liabilities and equity	2,310,635	1,851,696
Senior Notes 2024 [Member]
Liabilities:
Senior Notes	246,809	246,521
Senior Notes 2024 [Member] | Retail Opportunity Investments Partnership L.P. [Member]
Liabilities:
Senior Notes	246,809	246,521
Senior Notes 2023 [Member]
Liabilities:
Senior Notes	246,518	246,174
Senior Notes 2023 [Member] | Retail Opportunity Investments Partnership L.P. [Member]
Liabilities:
Senior Notes	$ 246,518	$ 246,174

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Preferred stock par value (in Dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	99,531,034	92,991,333
Common stock, shares outstanding	99,531,034	92,991,333

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues
Base rents	$ 148,622	$ 119,842	$ 86,195
Recoveries from tenants	40,562	32,945	22,497
Mortgage interest income			624
Other income	3,515	3,077	1,916
Total revenues	192,699	155,864	111,232
Operating expenses
Property operating	28,475	25,036	19,750
Property taxes	19,690	15,953	11,247
Depreciation and amortization	70,957	58,435	40,398
General and administrative expenses	12,650	11,200	10,059
Acquisition transaction costs	965	961	1,688
Other expenses	627	505	315
Total operating expenses	133,364	112,090	83,457
Operating income	59,335	43,774	27,775
Non-operating income (expenses)
Interest expense and other finance expenses	(34,243)	(27,593)	(15,855)
Gain on consolidation of joint venture			20,382
Equity in earnings from unconsolidated joint ventures			2,390
Gain on sale of real estate		4,869
Income from continuing operations	25,092	21,050	34,692
Loss from discontinued operations			(714)
Net income	25,092	21,050	33,978
Net income attributable to non-controlling interest	(1,228)	(749)	(165)
Net Income Attributable to Retail Opportunity Investments Corp.	$ 23,864	$ 20,301	$ 33,813
Net income per share – basic:
Income from continuing operations per share or unit, basic (in Dollars per share)	$ 0.25	$ 0.24	$ 0.51
Loss from discontinued operations per share or unit, basic (in Dollars per share)			(0.01)
Net income per share or unit, basic (in Dollars per share)	0.25	0.24	0.50
Net income per share – diluted:
Income from continuing operations per share or unit, diluted (in Dollars per share)	0.25	0.24	0.49
Loss from discontinued operations per share or unit, diluted (in Dollars per share)			(0.01)
Net income per share or unit, diluted (in Dollars per share)	0.25	0.24	0.48
Dividends per common share or unit (in Dollars per share)	$ 0.68	$ 0.64	$ 0.60
Comprehensive income:
Net income	$ 25,092	$ 21,050	$ 33,978
Unrealized gain on swap derivative
Unrealized swap derivative gain (loss) arising during the period		(3,132)	4,565
Reclassification adjustment for amortization of interest expense included in net income	2,139	3,219	4,621
Other comprehensive income (loss)	2,139	87	9,186
Comprehensive income	27,231	21,137	43,164
Comprehensive income attributable to non-controlling interests	(1,228)	(749)	(165)
Comprehensive income attributable to Retail Opportunity Investments Corp	26,003	20,388	42,999
Retail Opportunity Investments Partnership L.P. [Member]
Revenues
Base rents	148,622	119,842	86,195
Recoveries from tenants	40,562	32,945	22,497
Mortgage interest income			624
Other income	3,515	3,077	1,916
Total revenues	192,699	155,864	111,232
Operating expenses
Property operating	28,475	25,036	19,750
Property taxes	19,690	15,953	11,247
Depreciation and amortization	70,957	58,435	40,398
General and administrative expenses	12,650	11,200	10,059
Acquisition transaction costs	965	961	1,688
Other expenses	627	505	315
Total operating expenses	133,364	112,090	83,457
Operating income	59,335	43,774	27,775
Non-operating income (expenses)
Interest expense and other finance expenses	(34,243)	(27,593)	(15,855)
Gain on consolidation of joint venture			20,382
Equity in earnings from unconsolidated joint ventures			2,390
Gain on sale of real estate		4,869
Income from continuing operations	25,092	21,050	34,692
Loss from discontinued operations			(714)
Net income	$ 25,092	$ 21,050	$ 33,978
Net income per share – basic:
Income from continuing operations per share or unit, basic (in Dollars per share)	$ 0.25	$ 0.24	$ 0.51
Loss from discontinued operations per share or unit, basic (in Dollars per share)			(0.01)
Net income per share or unit, basic (in Dollars per share)	0.25	0.24	0.50
Net income per share – diluted:
Income from continuing operations per share or unit, diluted (in Dollars per share)	0.25	0.24	0.49
Loss from discontinued operations per share or unit, diluted (in Dollars per share)			(0.01)
Net income per share or unit, diluted (in Dollars per share)	0.25	0.24	0.48
Dividends per common share or unit (in Dollars per share)	$ 0.68	$ 0.64	$ 0.60
Comprehensive income:
Net income	$ 25,092	$ 21,050	$ 33,978
Unrealized gain on swap derivative
Unrealized swap derivative gain (loss) arising during the period		(3,132)	4,565
Reclassification adjustment for amortization of interest expense included in net income	2,139	3,219	4,621
Other comprehensive income (loss)	2,139	87	9,186
Comprehensive income	$ 27,231	$ 21,137	$ 43,164

Consolidated Statement of Equit

Consolidated Statement of Equity - USD ($) $ in Thousands	Total	Officer [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member]Officer [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]
Total (in Shares)			52,596,754
Balance at Dec. 31, 2012	$ 466,542		$ 5	$ 523,541	$ (38,851)		$ (18,155)	$ 2
Balance (in Shares) at Dec. 31, 2012			52,596,754
Shares issued under the 2009 Plan (in Shares)			313,364
Repurchase of common stock	(407)			(407)
Repurchase of common stock (in Shares)			(30,333)
Retirement of options	(275)			(275)
Stock based compensation expense	2,856			2,856
Proceeds from the exercise of warrants	226,530		$ 2	226,528
Proceeds from the exercise of warrants (in Shares)			18,877,482
Exercise of Sponsor warrants (in Shares)			688,500
Buyback of warrants	(32,786)			(32,786)
Issuance of OP Units to non-controlling interests	45,373							45,373
Distributions to non-controlling interests	(277)							(277)
Cash redemption for non-controlling interests | Cash Redemption for Non-controlling Interests [Member]	(2,190)							(2,190)
Cash redemption for non-controlling interests | Purchase of Non-controlling Interests [Member]	(2)							(2)
Registration expenditures	(69)			(69)
Cash dividends	(42,939)	$ (110)			(42,469)	$ (110)		(470)
Net income attributable to Retail Opportunity Investments Corp.	33,813				33,813
Net income attributable to non-controlling interests	165							165
Other comprehensive income	9,186						9,186
Total (in Shares)			52,596,754
Adjustment to non-controlling interests ownership in Operating Partnership				13,314				(13,314)
Balance at Dec. 31, 2013	705,410		$ 7	732,702	(47,617)		(8,969)	29,287
Balance (in Shares) at Dec. 31, 2013			72,445,767
Total (in Shares)			72,445,767
Shares issued under the 2009 Plan (in Shares)			340,621
Repurchase of common stock	(631)			(631)
Repurchase of common stock (in Shares)			(42,438)
Cancellation of restricted stock (in Shares)			(5,833)
Stock based compensation expense	3,662			3,662
Proceeds from the exercise of warrants	70,539		$ 1	70,538
Proceeds from the exercise of warrants (in Shares)			5,878,216
Issuance of OP Units to non-controlling interests	16,343							16,343
Cash redemption for non-controlling interests | Cash Redemption for Non-controlling Interests [Member]	(3,280)							(3,280)
Registration expenditures	(9,635)			(9,635)
Cash dividends	(55,531)	(138)			(53,522)	(138)		(2,009)
Net income attributable to Retail Opportunity Investments Corp.	20,301				20,301
Net income attributable to non-controlling interests	749							749
Other comprehensive income	$ 87						87
Total (in Shares)	92,991,333		72,445,767
Adjustment to non-controlling interests ownership in Operating Partnership				2,020				(2,020)
Proceeds from the issuance of common stock	$ 214,906		$ 1	214,905
Proceeds from the issuance of common stock (in Shares)			14,375,000
Balance at Dec. 31, 2014	$ 962,782		$ 9	1,013,561	(80,976)		(8,882)	39,070
Balance (in Shares) at Dec. 31, 2014	92,991,333		92,991,333
Total (in Shares)	92,991,333		92,991,333
Shares issued under the 2009 Plan (in Shares)			381,577
Repurchase of common stock	$ (1,317)			(1,317)
Repurchase of common stock (in Shares)	0		(78,570)
Cancellation of restricted stock (in Shares)			(2,832)
Stock based compensation expense	$ 4,684			4,684
Redemption of OP Units				3,184				(3,184)
Redemption of OP Units (in Shares)	174,959		174,959
Issuance of OP Units to non-controlling interests	$ 116,640							116,640
Registration expenditures	(4,618)			(4,618)
Cash dividends	(68,482)	$ (161)			(65,718)	$ (161)		(2,764)
Net income attributable to Retail Opportunity Investments Corp.	23,864				23,864
Net income attributable to non-controlling interests	1,228							1,228
Other comprehensive income	2,139						2,139
Total	$ 1,138,052		$ 10	1,166,395	(122,991)		(6,743)	101,381
Total (in Shares)	99,531,034		92,991,333
Less: Promissory note secured by equity	$ (6,710)							(6,710)
Adjustment to non-controlling interests ownership in Operating Partnership				49,609				(49,609)
Proceeds from the issuance of common stock	101,293		$ 1	101,292
Proceeds from the issuance of common stock (in Shares)			6,064,567
Balance at Dec. 31, 2015	$ 1,131,342		$ 10	$ 1,166,395	$ (122,991)		$ (6,743)	$ 94,671
Balance (in Shares) at Dec. 31, 2015	99,531,034		99,531,034
Total (in Shares)	99,531,034		99,531,034

Consolidated Statement of Equi6

Consolidated Statement of Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Dividends per share/unit	$ 0.68	$ 0.64	$ 0.60

Consolidated Statements of Cash

Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 25,092	$ 21,050	$ 33,978
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	70,957	58,435	40,398
Amortization of deferred financing costs and mortgage premiums, net	662	(432)	(144)
Gain on consolidation of joint venture			(20,382)
Straight-line rent adjustment	(5,013)	(3,795)	(3,734)
Amortization of above and below market rent	(9,890)	(6,945)	(4,444)
Amortization relating to stock based compensation	4,684	3,662	2,856
Provisions for tenant credit losses	1,984	2,316	1,623
Equity in earnings from unconsolidated joint ventures			(2,390)
Other noncash interest expense	2,139	1,848
Gain on sale of real estate		(4,869)
Loss on sale of discontinued operations			714
Settlement of interest rate swap agreements		(3,230)	(8,750)
Other			792
Change in operating assets and liabilities
Restricted cash	264	190	74
Tenant and other receivables	(2,599)	(1,605)	(4,820)
Prepaid expenses	501	(1,106)	(105)
Accounts payable and accrued expenses	512	(1,164)	2,943
Other asset and liabilities, net	(2,376)	852	(856)
Net cash provided by operating activities	86,917	65,207	37,753
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in real estate	(313,623)	(398,205)	(289,399)
Acquisition of entities			(43,378)
Proceeds from sale of real estate		27,622	5,608
Investments in mortgage notes receivables			(294)
Improvements to properties	(27,515)	(26,142)	(19,067)
Deposits on real estate acquisitions	4,000	(3,725)	1,225
Construction escrows and other	23	594	328
Net cash used in investing activities	(337,115)	(399,856)	(344,977)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal repayment on mortgages	(84,308)	(21,982)	(14,902)
Proceeds from mortgage loan	35,500
Proceeds from term loan	300,000
Payments on term loan		(200,000)
Proceeds from draws on credit facility	430,000	549,300	342,950
Payments on credit facility	(451,000)	(449,750)	(405,000)
Payment of contingent consideration			(1,864)
Proceeds from exercise of warrants		70,723	226,530
Payments to acquire warrants			(32,786)
Issuance of promissory note	(6,710)
Proceeds from the sale of common stock	101,293	214,906
Purchase of non-controlling interest			(2)
Redemption of OP Units		(3,280)	(2,190)
Distributions to Operating Partnership	(2,764)	(2,009)	(747)
Deferred financing and other costs	(1,849)	(3,188)	(4,098)
Registration expenditures	(4,739)	(9,513)	(69)
Dividends paid	(65,837)	(53,574)	(42,513)
Repurchase of common stock	(1,317)	(631)	(407)
Retirement of options			(275)
Net cash provided by financing activities	248,269	337,502	310,452
Net (decrease) increase in cash and cash equivalents	(1,929)	2,853	3,228
Cash and cash equivalents at beginning of period	10,773	7,920	4,692
Cash and cash equivalents at end of period	8,844	10,773	7,920
Supplemental disclosure of cash activities:
Cash paid on gross receipts and income for federal and state purposes	241	331	242
Interest paid	31,996	26,006	14,579
Other non-cash investing and financing activities – increase (decrease):
Issuance of OP Units in connection with acquisitions	150,315	16,343	45,373
Assumed mortgage upon acquisition	19,024		62,750
Intangible lease liabilities	20,925	44,264	35,039
Transfer of equity investment in property to real estate investment			15,991
Interest rate swap asset		(1,948)	1,948
Interest rate swap liabilities		(2,529)	6,734
Accrued real estate improvement costs	590	1,372	592
Retail Opportunity Investments Partnership L.P. [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	25,092	21,050	33,978
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	70,957	58,435	40,398
Amortization of deferred financing costs and mortgage premiums, net	662	(432)	(144)
Gain on consolidation of joint venture			(20,382)
Straight-line rent adjustment	(5,013)	(3,795)	(3,734)
Amortization of above and below market rent	(9,890)	(6,945)	(4,444)
Amortization relating to stock based compensation	4,684	3,662	2,856
Provisions for tenant credit losses	1,984	2,316	1,623
Equity in earnings from unconsolidated joint ventures			(2,390)
Other noncash interest expense	2,139	1,848
Gain on sale of real estate		(4,869)
Loss on sale of discontinued operations			714
Settlement of interest rate swap agreements		(3,230)	(8,750)
Other			792
Change in operating assets and liabilities
Restricted cash	264	190	74
Tenant and other receivables	(2,599)	(1,605)	(4,820)
Prepaid expenses	501	(1,106)	(105)
Accounts payable and accrued expenses	512	(1,164)	2,943
Other asset and liabilities, net	(2,376)	852	(856)
Net cash provided by operating activities	86,917	65,207	37,753
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in real estate	(313,623)	(398,205)	(289,399)
Acquisition of entities			(43,378)
Proceeds from sale of real estate		27,622	5,608
Investments in mortgage notes receivables			(294)
Improvements to properties	(27,515)	(26,142)	(19,067)
Deposits on real estate acquisitions	4,000	(3,725)	1,225
Construction escrows and other	23	594	328
Net cash used in investing activities	(337,115)	(399,856)	(344,977)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal repayment on mortgages	(84,308)	(21,982)	(14,902)
Proceeds from mortgage loan	35,500
Proceeds from term loan	300,000
Payments on term loan		(200,000)
Proceeds from draws on credit facility	430,000	549,300	342,950
Payments on credit facility	(451,000)	(449,750)	(405,000)
Payment of contingent consideration			(1,864)
Proceeds from exercise of warrants		70,723	226,530
Payments to acquire warrants			(32,786)
Issuance of promissory note	(6,710)
Proceeds from the sale of common stock	101,293	214,906
Purchase of non-controlling interest			(2)
Redemption of OP Units		(3,280)	(2,190)
Deferred financing and other costs	(1,849)	(3,188)	(4,098)
Registration expenditures	(4,739)	(9,513)	(69)
Dividends paid	(68,601)	(55,583)	(43,260)
Repurchase of common stock	(1,317)	(631)	(407)
Retirement of options			(275)
Net cash provided by financing activities	248,269	337,502	310,452
Net (decrease) increase in cash and cash equivalents	(1,929)	2,853	3,228
Cash and cash equivalents at beginning of period	10,773	7,920	4,692
Cash and cash equivalents at end of period	8,844	10,773	7,920
Supplemental disclosure of cash activities:
Cash paid on gross receipts and income for federal and state purposes	241	331	242
Interest paid	31,996	26,006	14,579
Other non-cash investing and financing activities – increase (decrease):
Issuance of OP Units in connection with acquisitions	150,315	16,343	45,373
Assumed mortgage upon acquisition	19,024		62,750
Intangible lease liabilities	20,925	44,264	35,039
Transfer of equity investment in property to real estate investment			15,991
Interest rate swap asset		(1,948)	1,948
Interest rate swap liabilities		(2,529)	6,734
Accrued real estate improvement costs	$ 590	1,372	592
Senior Notes 2024 [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of senior notes		246,500
Senior Notes 2024 [Member] | Retail Opportunity Investments Partnership L.P. [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of senior notes		$ 246,500
Senior Notes 2023 [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of senior notes			245,825
Senior Notes 2023 [Member] | Retail Opportunity Investments Partnership L.P. [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of senior notes			$ 245,825

Consolidated Statement of Partn

Consolidated Statement of Partners' Capital - USD ($) $ in Thousands		Retail Opportunity Investments Partnership L.P. [Member]Limited Partner’s Capital [Member]		Retail Opportunity Investments Partnership L.P. [Member]ROIC Capital [Member]Officer [Member]	[1]	Retail Opportunity Investments Partnership L.P. [Member]ROIC Capital [Member]		Retail Opportunity Investments Partnership L.P. [Member]AOCI Attributable to Parent [Member]	Retail Opportunity Investments Partnership L.P. [Member]Noncontrolling Interest [Member]	Retail Opportunity Investments Partnership L.P. [Member]Officer [Member]	Retail Opportunity Investments Partnership L.P. [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Officer [Member]	Total
Total (in Shares)	[1]					52,596,754
Balance at Dec. 31, 2012						$ 484,695	[1]	$ (18,155)	$ 2		$ 466,542
Balance (in Shares) at Dec. 31, 2012	[1]					52,596,754
OP Units issued under the 2009 Plan (in Shares)	[1]					313,364
Repurchase of OP Units						$ (407)	[1]				(407)				$ (407)
Repurchase of OP Units (in Shares)	[1]					(30,333)
Retirement of options						$ (275)	[1]				(275)				(275)
Stock based compensation expense						2,856	[1]				2,856				2,856
Issuance of OP Units upon exercise of warrants						$ 226,530	[1]				226,530				226,530
Issuance of OP Units upon exercise of warrants (in Shares)	[1]					18,877,482
Issuance of OP Units upon exercise of Sponsor warrants (in Shares)	[1]					688,500
Repurchase of warrants						$ (32,786)	[1]				(32,786)				(32,786)
Issuance of OP Units in connection with acquisition		$ 45,373	[2]								45,373
Issuance of OP Units in connection with acquisition (in Shares)	[2]	3,290,263
Limited Partner distributions		$ (277)	[2]								(277)		$ (277)		(277)
Cash redemption of OP Units | Cash Redemption for Non-controlling Interests [Member]		$ (2,190)	[2]								(2,190)		(2,190)		(2,190)
Cash redemption of OP Units | Purchase of Non-controlling Interests [Member]									$ (2)		(2)		(2)		(2)
Cash redemption of OP Units (in Shares) | Cash Redemption for Non-controlling Interests [Member]	[2]	(158,221)
Registration expenditures						(69)	[1]				(69)				(69)
Cash distributions		$ (470)	[2]			(42,469)	[1]				(42,939)
Dividends payable to officers				$ (110)						$ (110)			470	$ 110	42,939
Net income attributable to Retail Opportunity Investments Partnership, LP		$ 165	[2]			$ 33,813	[1]				33,978				33,978
Other comprehensive income								9,186			9,186	$ 9,186			9,186
Total (in Shares)		3,132,042	[2]			52,596,754	[1]
Adjustment to non-controlling interests		$ (13,314)	[2]			$ 13,314	[1]						(13,314)
Balance at Dec. 31, 2013		$ 29,287	[2]			$ 685,092	[1]	(8,969)			705,410
Balance (in Shares) at Dec. 31, 2013		3,132,042	[2]			72,445,767	[1]
Total (in Shares)		3,132,042	[2]			72,445,767	[1]
OP Units issued under the 2009 Plan (in Shares)	[1]					340,621
Repurchase of OP Units						$ (631)	[1]				(631)				(631)
Repurchase of OP Units (in Shares)	[1]					(42,438)
Cancellation of OP Units (in Shares)	[1]					(5,833)
Stock based compensation expense						$ 3,662	[1]				3,662				3,662
Issuance of OP Units upon exercise of warrants						$ 70,539	[1]				70,539				70,539
Issuance of OP Units upon exercise of warrants (in Shares)	[1]					5,878,216
Issuance of OP Units in connection with acquisition		$ 16,343	[2]								16,343
Issuance of OP Units in connection with acquisition (in Shares)	[2]	989,272
Cash redemption of OP Units | Cash Redemption for Non-controlling Interests [Member]		$ (3,280)	[2]								(3,280)		(3,280)		(3,280)
Cash redemption of OP Units (in Shares) | Cash Redemption for Non-controlling Interests [Member]	[2]	(200,000)
Registration expenditures						$ (9,635)	[1]				(9,513)				(9,513)
Cash distributions		$ (2,009)	[2]			(53,522)	[1]				(55,531)
Dividends payable to officers				(138)						(138)			2,009	138	55,531
Net income attributable to Retail Opportunity Investments Partnership, LP		$ 749	[2]			$ 20,301	[1]				21,050				21,050
Other comprehensive income								87			87	87			87
Total (in Shares)		3,132,042	[2]			72,445,767	[1]
Adjustment to non-controlling interests		$ (2,020)	[2]			$ 2,020	[1]						(2,020)
Issuance of OP Units in connection with common stock offering						$ 214,906	[1]				214,906				214,906
Issuance of OP Units in connection with common stock offering (in Shares)	[1]					14,375,000
Balance at Dec. 31, 2014		$ 39,070	[2]			$ 932,594	[1]	(8,882)			962,782
Balance (in Shares) at Dec. 31, 2014		3,921,314	[2]			92,991,333	[1]
Total (in Shares)		3,921,314	[2]			92,991,333	[1]
OP Units issued under the 2009 Plan (in Shares)	[1]					381,577
Repurchase of OP Units						$ (1,317)	[1]				(1,317)				$ (1,317)
Repurchase of OP Units (in Shares)						(78,570)	[1]								0
Cancellation of OP Units (in Shares)	[1]					(2,832)
Stock based compensation expense						$ 4,684	[1]				4,684				$ 4,684
Issuance of OP Units in connection with acquisition		$ 116,640	[2]								116,640
Issuance of OP Units in connection with acquisition (in Shares)	[2]	8,449,248
Cash redemption of OP Units		$ (3,184)	[2]			$ 3,184	[1]
Cash redemption of OP Units (in Shares)		(174,959)	[2]			174,959	[1]								(174,959)
Registration expenditures						$ (4,618)	[1]				(4,739)				$ (4,739)
Cash distributions		$ (2,764)	[2]			(65,718)	[1]				(68,482)
Dividends payable to officers				$ (161)						$ (161)			2,764	$ 161	68,482
Net income attributable to Retail Opportunity Investments Partnership, LP		1,228	[2]			23,864	[1]				25,092				25,092
Other comprehensive income								2,139			2,139	$ 2,139			2,139
Total		$ 101,381	[2]			$ 1,043,414	[1]	(6,743)			1,138,052
Total (in Shares)		3,921,314	[2]			92,991,333	[1]
Less: Promissory note secured by capital		$ (6,710)	[2]								(6,710)		(6,710)		(6,710)
Adjustment to non-controlling interests		(49,609)	[2]			$ 49,609	[1]						$ (49,609)
Issuance of OP Units in connection with common stock offering						$ 101,293	[1]				101,293				$ 101,293
Issuance of OP Units in connection with common stock offering (in Shares)	[1]					6,064,567
Balance at Dec. 31, 2015		$ 94,671	[2]			$ 1,043,414	[1]	$ (6,743)			$ 1,131,342
Balance (in Shares) at Dec. 31, 2015		12,195,603	[2]			99,531,034	[1]
Total (in Shares)		12,195,603	[2]			99,531,034	[1]
[1]	Consists of general and limited partnership interests held by ROIC.
[2]	Consists of limited partnership interests held by third parties.

Consolidated Statement of Part9

Consolidated Statement of Partners' Capital (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Retail Opportunity Investments Partnership L.P. [Member]
Cash distributions per unit	$ 0.68	$ 0.64	$ 0.60

Note 1 - Organization, Basis of

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	1. 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 with one or more assets or control of one or more operating businesses. On October 20, 2009, ROIC’s stockholders and warrantholders approved each of 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, which, among other things, sets 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 warrants exercised and 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 September 2015, the FASB issued Accounting Standards Update (“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 does not expect that the adoption of this pronouncement will have a material impact on the consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-03, “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. A reporting entity may apply the amendments in the ASU retrospectively to all prior periods. The Company expects that the adoption of the pronouncement will result in the presentation of debt issuance costs associated with its term loan, credit facility, Senior Notes Due 2024, Senior Notes Due 2023, and mortgage notes payable which are currently included in deferred charges in its consolidated balance sheets, as a direct reduction from the carrying amount of the related debt instrument. In May 2014, the FASB issued ASU No. 2014-09, “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 reporting periods 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 GAAP. The consolidated financial statements include the accounts 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. 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 modifies 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 The Company has 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 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 it may qualify as a REIT for U.S. federal income tax purposes, the Company 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 3,290,263 OP Units in connection with the acquisitions of two shopping centers, Crossroads Shopping Center and Five Points Plaza. Accordingly, the Operating Partnership ceased being a disregarded entity and instead is being treated as a partnership for 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 December 31, 2015, the statute of limitations for tax years 2012 through and including 2014 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 years ended December 31, 2015 and 2014, capitalized costs related to the improvements or replacement of real estate properties were approximately $28.1 million and $27.5 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 as of the acquisition date is received and estimates are refined, appropriate property adjustments are made to the purchase price allocation on a retrospective basis. In conjunction with the Company’s pursuit and acquisition of real estate investments, the Company expensed acquisition transaction costs during the years ended December 31, 2015, 2014 and 2013 of approximately $1.0 million, $1.0 million and $1.7 million, respectively. Regarding certain of the Company’s 2015 and all of the Company’s 2014 property acquisitions (see Note 2), the fair value of in-place leases and other intangibles have been allocated to intangible asset and liability accounts. Sales of real estate are recognized only when sufficient down payments have been obtained, possession and other attributes of ownership have been transferred to the buyer and the Company has no significant continuing involvement. The application of these criteria can be complex and requires the Company to make assumptions. Management has determined that all of these criteria were met for all real estate sold during the periods presented. Any reference to square footage or occupancy is unaudited and outside the scope of our independent registered public accounting firm’s audit of the Company’s financial statements in accordance with the standards of the United States Public Company Accounting Oversight Board. 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 December 31, 2015. 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 and lease incentive amortization 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. Lease incentives are amortized as a reduction of rental revenue over the respective tenant lease terms. 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’s guidance 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) collectivity 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 generally accepted accounting principles 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 and the allowance for bad debts 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 December 31, 2015 and December 31, 2014 was approximately $4.5 million and $3.6 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 Charges Deferred charges consist principally of leasing commissions and acquired lease origination costs (which are amortized ratably over the life of the tenant leases) and financing fees (which are amortized over the term of the related debt obligation). Deferred charges in the accompanying consolidated balance sheets are shown at cost, net of accumulated amortization of approximately $24.1 million and $18.8 million, as of December 31, 2015 and 2014, respectively. The unamortized balances of deferred charges as of December 31, 2015 that will be charged to future operations are as follows (in thousands): Lease Origination Costs Financing Costs Total 2016 $ 6,697 $ 2,089 $ 8,786 2017 5,384 2,068 7,452 2018 4,138 2,036 6,174 2019 3,168 647 3,815 2020 2,544 521 3,065 Thereafter 8,164 1,860 10,024 $ 30,095 $ 9,221 $ 39,316 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 years ended December 31, 2015, 2014 and 2013, the Company capitalized approximately $1.1 million, $947,000 and $742,000, respectively, of such payroll-related costs. 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. During the years ended December 31, 2014 and 2013, the effect of approximately 41,400,000 warrants to purchase the Company’s common stock (the “Public Warrants”) issued in connection with the Company’s initial public offering (the “IPO”), and the 8,000,000 warrants (the “Private Placement Warrants”) purchased by NRDC Capital Management, LLC simultaneously with the consummation of the IPO, for the time these were outstanding during these periods, were included in the calculation of diluted EPS since the weighted average share price was greater than the exercise price during these periods. No warrants were outstanding during the year ended December 31, 2015. For the years ended December 31, 2015, 2014 and 2013, 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 grants awarded under the 2009 Plan described in Note 9 are excluded from the basic EPS calculation, as these units are not participating securities. The following table sets forth the reconciliation between basic and diluted EPS for ROIC (in thousands, except share data): Year Ended December 31, 2015 2014 2013 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less income from continuing operations attributable to non-controlling interests (1,228 ) (749 ) (165 ) Less earnings allocated to unvested shares (229 ) (160 ) (78 ) Income from continuing operations available for common shareholders, basic 23,635 20,141 34,449 Loss from discontinued operations available to common shareholders, basic — — (714 ) Net income available to common stockholders, basic $ 23,635 $ 20,141 $ 33,735 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less earnings allocated to unvested shares (229 ) (160 ) (78 ) Income from continuing operations available for common shareholders, diluted 24,863 20,890 34,614 Loss from discontinued operations available to common shareholders, diluted — — (714 ) Net income available to common stockholders, diluted $ 24,863 $ 20,890 $ 33,900 Denominator: Denominator for basic EPS – weighted average common equivalent shares 95,651,780 83,411,230 67,419,497 Warrants — 631,086 2,568,822 OP Units 4,086,724 3,162,658 838,508 Restricted stock awards – performance-based 174,198 162,327 113,066 Stock options 105,079 86,108 64,487 Denominator for diluted EPS – weighted average common equivalent shares 100,017,781 87,453,409 71,004,380 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): Year Ended December 31, 2015 2014 2013 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less earnings allocated to unvested units (229 ) (160 ) (78 ) Income from continuing operations available for unitholders, basic and diluted 24,863 20,890 34,614 Loss from discontinued operations available to unitholders, basic and diluted — — (714 ) Net income available to unitholders, basic and diluted $ 24,863 $ 20,890 $ 33,900 Denominator: Denominator for basic EPS – weighted average common equivalent units 99,738,504 86,573,888 68,258,005 Warrants — 631,086 2,568,822 Restricted stock awards – performance-based 174,198 162,327 113,066 Stock Options 105,079 86,108 64,487 Denominator for diluted EPS – weighted average common equivalent units 100,017,781 87,453,409 71,004,380 Stock-Based Compensation The Company has a stock-based employee compensation plan, which is more fully described in Note 9. 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 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. Awards of performance-based grants are expensed as compensation under an accelerated method and 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 differentiated and referred to as Redeemable OP Units. OP Units that could require settlement in cash result in presentation in the mezzanine section of the balance sheet. See Note 10 for further discussion. Derivatives The Company records all derivatives on the balance sheet 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 financing 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. Reclassifications Certain reclassifications have been made to the prior period consolidated financial statements and notes to conform to the current year presentation.

Note 2 - Real Estate Investment

Note 2 - Real Estate Investments	12 Months Ended
	Dec. 31, 2015
Real Estate Investments Disclosure [Abstract]
Real Estate Investments Disclosure [Text Block]	2. Real Estate Investments The following real estate investment transactions occurred during the years ended December 31, 2015 and 2014. Property Acquisitions in 2015 On January 6, 2015, the Company acquired the property known as Park Oaks Shopping Center located in Thousand Oaks, California, for a purchase price of approximately $47.7 million. Park Oaks Shopping Center is approximately 110,000 square feet and is anchored by Safeway (Vons) Supermarket. The property was acquired with borrowings under the Company’s credit facility. On January 6, 2015, the Company acquired the property known as Ontario Plaza located in Ontario, California, for a purchase price of approximately $31.0 million. Ontario Plaza is approximately 150,000 square feet and is anchored by El Super Supermarket and Rite Aid Pharmacy. The property was acquired with borrowings under the Company’s credit facility. On January 7, 2015, the Company acquired the property known as Winston Manor Shopping Center located in South San Francisco, California, for a purchase price of approximately $20.5 million. Winston Manor Shopping Center is approximately 50,000 square feet and is anchored by Grocery Outlet Supermarket, a west coast based grocer. The property was acquired with borrowings under the Company’s credit facility. On May 6, 2015, the Company acquired key anchor spaces at two of its existing shopping centers for a purchase price of approximately $23.1 million including Lucky Supermarket at its Pinole Vista Shopping Center, located in Pinole, California, and Petco at its Canyon Park Shopping Center, located in Bothell, Washington. These anchor spaces were acquired with borrowings under the Company’s credit facility. On July 1, 2015, the Company acquired the property known as Jackson Square located in Hayward, California, within the San Francisco metropolitan area, for a purchase price of approximately $32.5 million. Jackson Square is approximately 114,000 square feet and is anchored by Safeway Supermarket, CVS Pharmacy and 24 Hour Fitness. The property was acquired with borrowings under the Company’s credit facility. On July 28, 2015, the Company acquired the property known as Sunnyside Village Square located in Happy Valley, Oregon, within the Portland metropolitan area, for a purchase price of approximately $17.5 million. Sunnyside Village Square is approximately 85,000 square feet and is anchored by Haggen Supermarket. The property was acquired with borrowings under the Company’s credit facility. On July 28, 2015, the Company acquired the property known as Tigard Promenade located in Tigard, Oregon, within the Portland metropolitan area, for a purchase price of approximately $21.0 million. Tigard Promenade is approximately 88,000 square feet and is anchored by Safeway Supermarket. The property was acquired with borrowings under the Company’s credit facility. On September 1, 2015, the Company acquired the property known as Gateway Centre located in San Ramon, California, within the San Francisco metropolitan area, for a purchase price of approximately $42.5 million. Gateway Centre is approximately 110,000 square feet and is anchored by SaveMart (Lucky) Supermarket and Walgreens. The property was acquired with borrowings under the Company’s credit facility. On November 9, 2015, the Company acquired the property known as Johnson Creek Center located in Happy Valley, Oregon, within the Portland metropolitan area, for an adjusted purchase price of approximately $31.4 million. Johnson Creek is approximately 109,000 square feet and is anchored by Trader Joe’s and Walgreens. The property was acquired with borrowings under the Company’s credit facility. On December 4, 2015, the Company acquired the property known as Iron Horse Plaza located in Danville, California, within the San Francisco metropolitan area, for an adjusted purchase price of approximately $45.6 million. Iron Horse Plaza is approximately 62,000 square feet and is anchored by Lunardi’s Markets, a San Francisco based grocer. The acquisition was funded through the issuance of 1,232,394 OP Units with a fair value of approximately $22.4 million, the assumption of a $19.0 million mortgage loan on the property and cash on hand. The $19.0 million mortgage loan was defeased in conjunction with the closing of the property, which was funded with borrowings under the Company’s credit facility. Further, in connection with this acquisition, the Company issued a promissory note for a total of approximately $6.7 million, secured by the OP Units of a Unitholder. It is the Company’s policy to treat all promissory notes that are secured by OP Units as a reduction of equity. On December 10, 2015, the Company acquired the property known as Sternco Shopping Center located in Bellevue, Washington, within the Seattle metropolitan area, for an adjusted purchase price of approximately $49.4 million. Sternco Shopping Center is approximately 114,000 square feet and is anchored by Asian Food Center, a Seattle based grocer. The acquisition was funded through the issuance of 2,823,790 OP Units with a fair value of $49.3 million and cash on hand. On December 21, 2015, the Company acquired the property known as Four Corner Square located in Maple Valley, Washington, within the Seattle metropolitan area, for a purchase price of approximately $41.8 million. Four Corner Square is approximately 120,000 square feet and is anchored by Grocery Outlet Supermarket, a west coast based grocer, and Walgreens. The property was acquired with borrowings under the Company’s credit facility. On December 31, 2015, the Company acquired the property known as Warner Plaza located in Woodland Hills, California, within the Los Angeles metropolitan area, for an adjusted purchase price of approximately $78.9 million. Warner Plaza is approximately 114,000 square feet and is anchored by Sprouts Market. The acquisition was funded through the issuance of 4,393,064 OP Units with a fair value of $78.6 million and cash on hand. Property Acquisitions in 2014 During the year ended December 31, 2014, the Company acquired eight properties throughout the west coast with a total of approximately 1.6 million square feet for a net adjusted purchase price of approximately $414.5 million The financial information set forth below summarizes the Company’s preliminary purchase price allocation for the properties acquired during the year ended December 31, 2015 and the final purchase price allocation for the properties acquired during the year ended December 31, 2014 (in thousands). December 31, 2015 December 31, 2014 ASSETS Land $ 118,898 $ 98,891 Building and improvements 366,977 317,385 Acquired lease intangible asset 13,214 32,200 Deferred charges 4,799 10,336 Assets acquired $ 503,888 $ 458,812 LIABILITIES Acquired lease intangible liability $ 20,925 $ 44,264 Liabilities assumed $ 20,925 $ 44,264 With respect to these acquisitions, the fair value of in-place leases and other intangibles have been allocated to intangible asset and liability accounts. All allocations are preliminary and may be adjusted as final information becomes available. Pro Forma Financial Information The pro forma financial information is based upon the Company’s historical consolidated statements of operations for the years ended December 31, 2015 and 2014, adjusted to give effect to these transactions at the beginning of 2014. 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 each year, nor does it purport to represent the results of future operations (in thousands). Year Ended December 31, Statement of operations: 2015 2014 Revenues $ 213,475 $ 204,584 Property operating and other expenses 104,629 94,709 Depreciation and amortization 80,709 80,012 Net income attributable to Retail Opportunity Investments Corp. $ 28,137 $ 29,863 The following table summarizes the operating results included in the Company’s historical consolidated statement of operations for the year ended December 31, 2015 for the properties acquired during the year ended December 31, 2015 (in thousands). Year Ended December 31, 2015 Statement of operations: Revenues $ 12,706 Property operating and other expenses 3,849 Depreciation and amortization 6,008 Net income attributable to Retail Opportunity Investments Corp. $ 2,849 The following table summarizes the operating results included in the Company’s historical consolidated statement of operations for the year ended December 31, 2014 for the properties acquired during the year ended December 31, 2014 (in thousands). Year Ended December 31, 2014 Statement of operations: Revenues $ 16,234 Property operating and other expenses 4,643 Depreciation and amortization 7,674 Net income attributable to Retail Opportunity Investments Corp. $ 3,917 Property Dispositions On June 5, 2014, the Company sold Phillips Village Shopping Center, a non-core shopping center located in Pomona, California with an occupancy rate of approximately 10.4% as of May 31, 2014. The sales price of this property of approximately $16.0 million, less costs to sell, resulted in net proceeds to the Company of approximately $15.6 million. Accordingly, the Company recorded a gain on sale of approximately $3.3 million for the year ended December 31, 2014 related to this property. On August 25, 2014, the Company sold the Oregon City Point Shopping Center, a non-core shopping center located in Oregon City, Oregon. The sales price of this property of approximately $12.4 million, less costs to sell, resulted in net proceeds of approximately $12.0 million. Accordingly, the Company recorded a gain on sale of approximately $1.6 million for year ended December 31, 2014 related to this property. The Company did not have any properties dispositions during the year ended December 31, 2015. Unconsolidated Joint Ventures At December 31, 2012, investment in and advances to unconsolidated joint venture consisted of a 49% ownership in Terranomics Crossroads Associates, LP of $15.3 million. On September 27, 2013, the Company acquired the remaining interests in Terranomics Crossroads Associates, LP from its joint venture partner. The purchase of its remaining interest was funded through the issuance of 2,639,632 OP Units with a fair value of approximately $36.4 million and the assumption of a $49.6 million mortgage loan on the property. Upon the acquisition of the remaining interest in the property, the Company reclassified approximately $16.0 million from “Investment in and advances to unconsolidated joint ventures” to “Real estate investments” in the accompanying consolidated balance sheets. The acquisition-date fair value of the previous equity interest was $36.0 million and is included in the measurement of the consideration transferred. The Company recognized a gain of $20.4 million as a result of remeasuring its prior equity interest in the venture held before the acquisition. The gain is included in the line item Gain on consolidation of joint venture in the consolidated statements of operations and comprehensive income. As of December 31, 2015, the Company has no remaining unconsolidated joint ventures.

Note 3 - Acquired Lease Intangi

Note 3 - Acquired Lease Intangibles	12 Months Ended
	Dec. 31, 2015
Disclosure Text Block [Abstract]
Intangible Assets Disclosure [Text Block]	3. Acquired Lease Intangibles Intangible assets and liabilities as of December 31, 2015 and 2014 consisted of the following (in thousands): December 31, 2015 December 31, 2014 Assets: In-place leases $ 79,996 $ 78,549 Accumulated amortization (28,535 ) (25,482 ) Above-market leases 25,575 26,197 Accumulated amortization (10,094 ) (7,831 ) Acquired lease intangible assets, net $ 66,942 $ 71,433 Liabilities: Below-market leases $ 155,169 $ 141,552 Accumulated amortization (30,308 ) (23,193 ) Acquired lease intangible liabilities, net $ 124,861 $ 118,359 For the years ended December 31, 2015, 2014 and 2013, the net amortization of acquired lease intangible assets and acquired lease intangible liabilities for above and below market leases was $9.9 million, $6.9 million and $4.4 million, respectively, which amounts are included in base rents in the accompanying consolidated statements of operations and comprehensive income. For the years ended December 31, 2015, 2014 and 2013, the net amortization of in-place leases was $13.2 million, $12.5 million and $10.3 million, respectively, which amounts are included in depreciation and amortization in the accompanying consolidated statements of operations and comprehensive income. The scheduled future amortization of acquired lease intangible assets as of December 31, 2015 is as follows (in thousands): Year ending December 31: 2016 $ 13,116 2017 10,421 2018 7,687 2019 5,146 2020 4,291 Thereafter 26,281 Total future amortization of acquired lease intangible assets $ 66,942 The scheduled future amortization of acquired lease intangible liabilities as of December 31, 2015 is as follows (in thousands): Year ending December 31: 2016 $ 11,260 2017 10,362 2018 9,508 2019 8,764 2020 7,950 Thereafter 77,017 Total future amortization of acquired lease intangible liabilities $ 124,861

Note 4 - Tenant Leases

Note 4 - Tenant Leases	12 Months Ended
	Dec. 31, 2015
Leases, Operating [Abstract]
Operating Leases of Lessor Disclosure [Text Block]	4. 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 December 31, 2015 are summarized as follows (in thousands): Year ending December 31: 2016 $ 147,424 2017 133,215 2018 113,062 2019 92,300 2020 74,680 Thereafter 351,703 Total minimum lease payments $ 912,384

Note 5 - Discontinued Operation

Note 5 - Discontinued Operations	12 Months Ended
	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	5. Discontinued Operations On June 5, 2013, the Company sold the Nimbus Village Shopping Center, a non-grocery anchored, non-core shopping center located in Rancho Cordova, California. The sales price of this property of approximately $6.3 million, less costs to sell, resulted in proceeds to the Company of approximately $5.6 million. Accordingly, the Company recorded a loss on sale of property of approximately $714,000 for the year ended December 31, 2013, which has been included in discontinued operations. The carrying value of the property as of December 31, 2012 was approximately $6.3 million.

Note 6 - Mortgage Notes Payable

Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	6. Mortgage Notes Payable, Credit Facility 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, revolving credit facility, carve-out guarantees on property-level debt, the Senior Notes Due 2024 and the Senior Notes Due 2023. Mortgage Notes Payable The mortgage notes payable collateralized by respective properties and assignment of leases at December 31, 2015 and December 31, 2014, respectively, were as follows (in thousands, except interest rates): Property Maturity Date Interest Rate December 31, 2015 December 31, 2014 Renaissance Towne Centre June 2015 5.13 % $ — $ 16,205 Crossroads Shopping Center September 2015 6.50 % — 48,581 Gateway Village III July 2016 6.10 % 7,166 7,270 Bernardo Heights Plaza July 2017 5.70 % 8,404 8,581 Santa Teresa Village February 2018 6.20 % 10,613 10,830 Diamond Hills Plaza October 2025 3.55 % 35,500 — $ 61,683 $ 91,467 Mortgage Premium 922 2,716 Total mortgage notes payable $ 62,605 $ 94,183 The combined aggregate principal maturities of mortgage notes payable during the next five years and thereafter are as follows (in thousands): Principal Repayments Scheduled Amortization Mortgage Premium Total 2016 $ 7,112 $ 474 $ 517 $ 8,103 2017 8,099 361 381 8,841 2018 10,094 43 24 10,161 2019 — — — — 2020 — — — — Thereafter 32,787 2,713 — 35,500 Total $ 58,092 $ 3,591 $ 922 $ 62,605 During the year ended December 31, 2015, the Company repaid the outstanding principal balance on the Renaissance Towne Center and Crossroads Shopping Center mortgage notes payable of $16.1 million and $48.3 million, respectively, without penalty, in accordance with the prepayment provisions of the notes. On September 1, 2015, the Company entered into a $35.5 million loan with PNC Bank, National Association. The loan is secured by the Diamond Hills Plaza property and bears interest at 3.55% annually. The loan matures on October 1, 2025, is interest only through September 30, 2021 and amortizes thereafter, on a 30-year amortization. Term Loan and Credit Facility 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 Operating Partnership has an unsecured revolving 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 facility amount up to an aggregate of $1.0 billion, subject to lender consents and other conditions. The maturity date of the credit facility has been extended to January 31, 2019, subject to a further one-year extension option, which may be exercised by the Operating Partnership upon satisfaction of certain conditions. 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 are subject to its compliance with financial covenants and other restrictions on an ongoing basis. The Operating Partnership was in compliance with such covenants at December 31, 2015. As of December 31, 2015, $300.0 million and $135.5 million were outstanding under the term loan and credit facility, respectively. The average interest rates on the term loan and the credit facility during the year ended December 31, 2015 were 1.3% and 1.2%, respectively. The Company had no available borrowings under the term loan at December 31, 2015. The Company had $364.5 million available to borrow under the credit facility at December 31, 2015. Senior Notes Due 2024 The carrying value of the Company’s Senior Notes Due 2024 is as follows (in thousands): December 31, 2015 December 31, 2014 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (3,191 ) (3,479 ) Senior Notes Due 2024: $ 246,809 $ 246,521 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 year ended December 31, 2015 includes $10.0 million and approximately $288,000 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 year ended December 31, 2014 includes $750,000 and approximately $21,000 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): December 31, 2015 December 31, 2014 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (3,482 ) (3,826 ) Senior Notes Due 2023: $ 246,518 $ 246,174 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 year ended December 31, 2015 includes approximately $12.5 million and approximately $344,000 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 year ended December 31, 2014 includes approximately $12.4 million and approximately $329,000 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.

Note 7 - Preferred Stock of ROI

Note 7 - Preferred Stock of ROIC	12 Months Ended
	Dec. 31, 2015
Disclosure Text Block Supplement [Abstract]
Preferred Stock [Text Block]	7. Preferred Stock of ROIC The Company 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 December 31, 2015 and 2014, there were no shares of preferred stock outstanding.

Note 8 - Common Stock and Warra

Note 8 - Common Stock and Warrants of ROIC	12 Months Ended
	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	8. Common Stock and Warrants of ROIC Equity Issuance On August 10, 2015, ROIC issued 5,520,000 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 $87.4 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 During the year ended December 31, 2014, ROIC entered into four separate Sales Agreements (the “2014 sales agreements”) with Jefferies LLC, KeyBanc Capital Markets Inc., MLV & Co. LLC and Raymond James & Associates, Inc. (each individually, an “Agent” and collectively, the “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 Agents either as agents or principals. During the year ended December 31, 2015, ROIC sold a total of 544,567 shares under one of the 2014 sales agreements, which resulted in gross proceeds of approximately $9.9 million and commissions of approximately $149,000 paid to the agent. Warrants Simultaneously with the consummation of the IPO, NRDC Capital Management, LLC purchased 8,000,000 Private Placement Warrants at a purchase price of $1.00 per warrant. The Private Placement Warrants were identical to the Public Warrants except that the Private Placement Warrants were exercisable on a cashless basis as long as they were still held by NRDC Capital Management, LLC or its members, members of its members’ immediate family or their controlled affiliates. The purchase price of the Private Placement Warrants approximated the fair value of such warrants at the purchase date. On February 4, 2013, NRDC exercised the outstanding 8,000,000 Private Placement Warrants on a cashless basis pursuant to which ROIC issued 688,500 shares to NRDC. ROIC had the right to redeem all of the outstanding warrants it issued in the IPO, at a price of $0.01 per warrant upon 30 days’ notice while the warrants were exercisable, only in the event that the last sale price of the common stock is at least a specified price. The terms of the warrants were as follows: · The exercise price of the warrants was $12.00. · The price at which ROIC’s common stock must trade before ROIC was able to redeem the warrants it issued in the IPO was $18.75. · To provide that a warrantholder’s ability to exercise warrants was limited to ensure that such holder’s “Beneficial Ownership” or “Constructive Ownership,” each as defined in ROIC’s charter, did not exceed the restrictions contained in the charter limiting the ownership of shares of ROIC’s common stock. ROIC had reserved 53,400,000 shares for the exercise of the Public Warrants and the Private Placement Warrants, and issuance of shares under ROIC’s 2009 Equity Incentive Plan (the “2009 Plan”). During the year ended December 31, 2014, the third-party warrant holders exercised a total of 5,878,216 Public Warrants, resulting in approximately $70.5 million of proceeds. During the year ended December 31, 2013, the third-party warrant holders exercised a total of 18,877,482 Public Warrants, resulting in approximately $226.5 million of proceeds. In May 2010, ROIC’s board of directors authorized a warrant repurchase program to repurchase up to a maximum of $40.0 million of ROIC’s warrants. During the year ended December 31, 2013, ROIC repurchased 744,850 warrants under the program in open market transactions for approximately $1.4 million. During the year ended December 31, 2013, ROIC repurchased an additional 15,834,000 warrants in privately negotiated transactions for approximately $31.3 million. No such repurchases occurred during the years ended December 31, 2014 and 2015. On October 23, 2014, ROIC's remaining outstanding warrants expired and 64,452 warrants expired unexercised. Stock Repurchase Program On July 31, 2013, ROIC’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 year ended December 31, 2015, the Company did not repurchase any shares of common stock under this program.

Note 9 - Stock Compensation and

Note 9 - Stock Compensation and Other Benefit Plans for ROIC	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	9. Stock Compensation and Other Benefit Plans for ROIC The Company 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. During 2009, the Company 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 the Company’s common stock at the time of the award, subject to a ceiling of 4,000,000 shares. Restricted Stock During the year ended December 31, 2015, ROIC awarded 343,070 shares of restricted common stock under the 2009 Plan, of which 117,275 shares are performance-based grants and the remainder of the shares are time based grants. The performance-based grants vest in three equal annual tranches, based on pre-defined market-specific performance criteria with vesting dates on January 1, 2016, 2017 and 2018. A summary of the status of the Company’s non-vested restricted stock awards as of December 31, 2015, and changes during the year ended December 31, 2015 are presented below: Shares Weighted Average Non-vested at December 31, 2014 559,358 $ 11.51 Granted 343,070 $ 15.58 Vested (272,125 ) $ 12.10 Forfeited (2,832 ) $ 15.88 Non-vested at December 31, 2015 627,471 $ 14.39 As of December 31, 2015, there remained a total of $4.0 million of unrecognized restricted stock compensation related to outstanding non-vested restricted stock grants awarded under the 2009 Plan. Restricted stock compensation is expected to be expensed over a remaining weighted average period of 1.7 years (irrespective of achievement of the performance conditions). The total fair value of restricted stock that vested during the years ended December 31, 2015, 2014 and 2013 was $4.6 million, $2.9 million and $2.4 million, respectively. Stock Based Compensation Expense For the years ended December 31, 2015, 2014 and 2013, the amounts charged to expense for all stock based compensation totaled approximately $4.7 million, $3.7 million and $2.9 million, respectively. Profit Sharing and Savings Plan During 2011, the Company established a profit sharing and savings plan (the “401K Plan”), which permits eligible employees to defer a portion of their compensation in accordance with the Code. Under the 401K Plan, the Company made matching contributions on behalf of eligible employees. The Company made contributions to the 401K Plan of approximately $31,000, $25,000 and $20,000 for the years ended December 31, 2015, 2014 and 2013, respectively.

Note 10 - Capital of the Operat

Note 10 - Capital of the Operating Partnership	12 Months Ended
	Dec. 31, 2015
Partners' Capital Notes [Abstract]
Partners' Capital Notes Disclosure [Text Block]	10. Capital of the Operating Partnership As of December 31, 2015, the Operating Partnership had 111,726,637 OP Units outstanding. ROIC owned an approximate 89.0% interest in the Operating Partnership at December 31, 2015, or 99,531,034 OP Units. The remaining 12,195,603 OP Units are owned by other limited partners. A share of ROIC’s common stock and the OP Units have essentially the same economic characteristics as they share equally in the total net income or loss and distributions of the Operating Partnership. Subject to certain exceptions, holders of 10,249,120 OP Units may 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 the property known as Sternco Shopping Center, the Operating Partnership issued 1,946,483 OP Units whereby the Operating Partnership is required to deliver cash in exchange for the OP Units upon redemption if such OP Units are redeemed on or before January 31, 2016 (“Redeemable OP Units”). During the year ended December 31, 2015, ROIC received notices of redemption for a total of 174,959 OP Units. ROIC elected to redeem the OP Units for shares of ROIC common stock on a one-for-one basis, and accordingly, 174,959 shares of ROIC common stock were issued. 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 differentiated and referred to as Redeemable OP Units. OP Units that could require settlement in cash result in presentation in the mezzanine section of the balance sheet. ROIC has the ability to deliver unregistered common shares for the remaining portion of the OP Units that are classified in permanent equity as of December 31, 2015 and 2014. The redemption value of the OP Units owned by the limited partners, not including ROIC, had such units been redeemed at December 31, 2015, was approximately $218.1 million, calculated for the OP Units classified as permanent equity based on the average closing price on the NASDAQ Stock Market of ROIC common stock for the ten consecutive trading days immediately preceding December 31, 2015, which amounted to $17.99 per share, and calculated for mezzanine equity at the cash settlement price of $17.30. 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 (excluding Redeemable OP Units). The redemption provisions that permit ROIC to settle in either cash or common stock, at the option 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 requirement to settle in unregistered shares, and determined that the OP Units meet the requirements to qualify for presentation as permanent equity.

Note 11 - Fair Value of Financi

Note 11 - Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	11. 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 value of the revolving credit facility is deemed to be at fair value since the outstanding debt is directly tied to monthly LIBOR contracts. 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 December 31, 2015 is approximately $238.5 million.

Note 12 - Derivative and Hedgin

Note 12 - Derivative and Hedging Activities	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	12. Derivative and Hedging Activities During the year ended December 31, 2014, the Company cash settled the remaining outstanding interest rate swaps, and accordingly, none are outstanding as of December 31, 2015. The Company’s objectives in using interest rate derivatives historically were to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company used 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 effective portion of changes in the fair value of derivatives that are designated as cash flow hedges are recorded in 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. 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 $2.1 million will be reclassified as an increase to interest expense. 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 years ended December 31, 2015, 2014, and 2013, respectively (in thousands). Amounts reclassified from other comprehensive income (“OCI”) due to ineffectiveness are recognized as interest expense. Year Ended Year Ended Year Ended Amount of (loss) gain recognized in OCI on derivative $ — $ (3,132 ) $ 4,565 Amount of loss reclassified from accumulated OCI into interest $ 2,139 $ 3,219 $ 4,621 Amount of gain recognized in income on derivative (ineffective portion and amount excluded from effectiveness testing) $ — $ — $ 3

Note 13 - Commitments and Conti

Note 13 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	13. 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 Company has signed several ground leases for certain properties. For financial reporting purposes, rent expense is recognized on a straight-line basis over the term of the lease. Accordingly, rent expense recognized in excess of rent paid is reflected as a liability in the accompanying consolidated balance sheets. Rent expense, for both ground leases and corporate office space, was approximately $1.2 million, $1.2 million, and $1.1 million for the years ended December 31, 2015, 2014 and 2013, respectively. The following table represents the Company’s future minimum annual lease payments under operating leases as of December 31, 2015 (in thousands): Operating Leases 2016 $ 981 2017 1,049 2018 1,054 2019 1,059 2020 1,067 Thereafter 36,204 Total minimum lease payments $ 41,414 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, to indemnify the respective sellers receiving OP Units against certain tax liabilities incurred by them, as calculated pursuant to the respective Tax Protection Agreements. In connection with the acquisition of Wilsonville Town Center in December 2014 and Iron Horse Plaza, Sternco Shopping Center and Warner Plaza in December 2015 (all 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, to indemnify the respective sellers receiving OP Units against certain tax liabilities incurred by them, as calculated pursuant to the respective Tax Protection Agreements.

Note 14 - Related Party Transac

Note 14 - Related Party Transactions	12 Months Ended
	Dec. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	14. 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 the years ended December 31, 2015, 2014 and 2013, the Company incurred approximately $42,000, $37,000 and $25,000, respectively, of expenses relating to the agreements which were included in general and administrative expenses in the accompanying consolidated statements of operations and other comprehensive income.

Note 15 - Quarterly Results of

Note 15 - Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	15. Quarterly Results of Operations (Unaudited) The unaudited quarterly results of operations for the years ended December 31, 2015 and 2014 for ROIC are as follows (in thousands, except share data): Year Ended December 31, 2015 March 31 June 30 September 30 December 31 Total revenues $ 45,122 $ 46,215 $ 50,077 $ 51,285 Net income $ 4,376 $ 5,411 $ 7,837 $ 7,468 Net income attributable to ROIC $ 4,200 $ 5,201 $ 7,542 $ 6,921 Basic income per share $ 0.04 $ 0.05 $ 0.08 $ 0.07 Diluted income per share $ 0.04 $ 0.05 $ 0.08 $ 0.07 Year Ended December 31, 2014 March 31 June 30 September 30 December 31 Total revenues $ 36,350 $ 36,915 $ 40,856 $ 41,743 Net income $ 3,266 $ 6,051 $ 6,981 $ 4,752 Net income attributable to ROIC $ 3,132 $ 5,834 $ 6,748 $ 4,587 Basic income per share $ 0.04 $ 0.08 $ 0.07 $ 0.05 Diluted income per share $ 0.04 $ 0.07 $ 0.07 $ 0.05 The unaudited quarterly results of operations for the years ended December 31, 2015 and 2014 for the Operating Partnership are as follows (in thousands, except unit data): Year Ended December 31, 2015 March 31 June 30 September 30 December 31 Total revenues $ 45,122 $ 46,215 $ 50,077 $ 51,285 Net income attributable to the Operating Partnership $ 4,376 $ 5,411 $ 7,837 $ 7,468 Basic income per unit $ 0.04 $ 0.05 $ 0.08 $ 0.07 Diluted income per unit $ 0.04 $ 0.05 $ 0.08 $ 0.07 Year Ended December 31, 2014 March 31 June 30 September 30 December 31 Total revenues $ 36,350 $ 36,915 $ 40,856 $ 41,743 Net income attributable to the Operating Partnership $ 3,266 $ 6,051 $ 6,981 $ 4,752 Basic income per unit $ 0.04 $ 0.07 $ 0.07 $ 0.05 Diluted income per unit $ 0.04 $ 0.07 $ 0.07 $ 0.05

Note 16 - Subsequent Events

Note 16 - Subsequent Events	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent Events [Text Block]	16. Subsequent Events Prior to January 31, 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 Contribution Agreement for the closing of the property known as Sternco Shopping Center, 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 converted to OP Units on January 31, 2016 and are treated as permanent equity as ROIC now has the sole election to settle the OP Units in cash or unregistered shares of ROIC common stock. On January 15, 2016, the Company entered into a $50.0 million interest rate swap with Bank of Montreal. The swap has an effective date of January 29, 2016 and a termination date of January 31, 2019. Further, on February 2, 2016, the Company entered into a $50.0 million interest rate swap with Regions Bank. The swap has an effective date of February 29, 2016 and a termination date of January 31, 2019. These swaps are being used to hedge the anticipated variable cash flows associated with the Company’s variable rate debt that is outstanding as of December 31, 2015. On February 23, 2016, the Company’s board of directors declared a cash dividend on its common stock of $0.18 per share, payable on March 30, 2016 to holders of record on March 16, 2016.

Schedule III - Real Estate and

Schedule III - Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Text Block]	December 31, 2015 (in thousands) Initial Cost to Company Cost Capitalized Subsequent to Acquisition Amount at Which Carried at Close of Period Building & Building & Building & Accumulated (1) Date of (a) Paramount Plaza, CA $ — $ 6,347 $ 10,274 $ 214 $ 1,306 $ 6,561 $ 11,580 $ 18,141 $ 2,093 12/22/2009 Santa Ana Downtown Plaza, CA — 7,895 9,890 — 1,018 7,895 10,908 18,803 1,989 1/26/2010 Meridian Valley Plaza, WA — 1,881 4,795 — 555 1,881 5,350 7,231 964 2/1/2010 The Market at Lake Stevens, WA — 3,087 12,397 — 313 3,087 12,710 15,797 2,216 3/16/2010 Norwood Shopping Center, CA — 3,031 11,534 122 1,086 3,153 12,620 15,773 2,101 4/5/2010 Pleasant Hill Marketplace, CA — 6,359 6,927 — 741 6,359 7,668 14,027 1,538 4/8/2010 Vancouver Market Center, WA — 4,080 6,912 — 735 4,080 7,647 11,727 1,183 6/17/2010 Happy Valley Town Center, OR — 11,678 27,011 — 1,742 11,678 28,753 40,431 4,838 7/14/2010 Cascade Summit, OR — 8,853 7,732 — 332 8,853 8,064 16,917 1,638 8/20/2010 Heritage Market Center, WA — 6,595 17,399 — 408 6,595 17,807 24,402 2,928 9/23/2010 Claremont Center, CA (2) — 5,975 1,019 183 4,360 6,158 5,379 11,537 1,580 9/23/2010 Shops At Sycamore Creek, CA — 3,747 11,584 — 880 3,747 12,464 16,211 2,520 9/30/2010 Gateway Village, CA 7,166 5,917 27,298 — 510 5,917 27,808 33,725 4,053 12/16/2010 Division Crossing, OR — 3,706 8,327 — 5,713 3,706 14,040 17,746 1,967 12/22/2010 Halsey Crossing, OR (2) — — 7,773 — 798 — 8,571 8,571 1,401 12/22/2010 Marketplace Del Rio,CA — 13,420 22,251 — 1,681 13,420 23,932 37,352 3,774 1/3/2011 Pinole Vista, CA — 12,894 30,670 — 2,134 12,894 32,804 45,698 3,645 1/6/2011 Desert Spring Marketplace, CA — 8,517 18,761 (160 ) 1,513 8,357 20,274 28,631 3,327 2/17/2011 Mills Shopping Center, CA — 4,084 16,833 — 6,570 4,084 23,403 27,487 3,675 2/17/2011 Morada Ranch, CA — 2,504 19,547 — 509 2,504 20,056 22,560 3,007 5/20/2011 Renaissance, CA — 8,640 13,848 — 441 8,640 14,289 22,929 1,947 8/3/2011 Country Club Gate, CA — 6,487 17,341 — 1,000 6,487 18,341 24,828 2,672 7/8/2011 Canyon Park, WA — 9,352 15,916 — 3,215 9,352 19,131 28,483 2,281 7/29/2011 Hawks Prairie, WA — 5,334 20,694 — 436 5,334 21,130 26,464 2,797 9/8/2011 Kress Building, WA — 5,693 20,866 — 4,672 5,693 25,538 31,231 3,351 9/30/2011 Round Hill Square, CA — 6,358 17,734 — 950 6,358 18,684 25,042 2,681 8/23/2011 Hillsboro, OR (2) — — 18,055 — 587 — 18,642 18,642 2,486 11/23/2011 Gateway Shopping Center, WA (2) — 6,242 23,462 — 30 6,242 23,492 29,734 2,732 2/16/2012 Euclid Plaza, CA — 7,407 7,753 — 2,859 7,407 10,612 18,019 1,527 3/28/2012 Green Valley, CA — 1,685 8,999 — 414 1,685 9,413 11,098 1,282 4/2/2012 Aurora Square, WA — 3,002 1,693 — (28 ) 3,002 1,665 4,667 324 5/3/2012 Marlin Cove, CA — 8,815 6,797 — 1,384 8,815 8,181 16,996 1,160 5/4/2012 Seabridge, CA — 5,098 17,164 — 658 5,098 17,822 22,920 2,257 5/31/2012 Novato, CA — 5,329 4,412 — 937 5,329 5,349 10,678 527 7/24/2012 Glendora, CA — 5,847 8,758 — 164 5,847 8,922 14,769 1,139 8/1/2012 Wilsonville, WA — 4,181 15,394 — 249 4,181 15,643 19,824 1,703 8/1/2012 Bay Plaza, CA — 5,454 14,857 — 1,274 5,454 16,131 21,585 1,748 10/5/2012 Santa Theresa, CA 10,613 14,965 17,162 — 2,954 14,965 20,116 35,081 2,202 11/8/2012 Cypress West, CA — 15,480 11,819 5 1,966 15,485 13,785 29,270 1,480 12/7/2012 Redondo Beach, CA — 16,242 13,625 5 16 16,247 13,641 29,888 1,326 12/28/2012 Harbor Place, CA — 16,506 10,527 — 324 16,506 10,851 27,357 977 12/28/2012 Diamond Bar Town Center, CA — 9,540 16,795 — 3,608 9,540 20,403 29,943 2,019 2/1/2013 Bernardo Heights, CA 8,404 3,192 8,940 — 720 3,192 9,660 12,852 849 2/6/2013 Canyon Crossing, WA — 7,941 24,659 — 2,649 7,941 27,308 35,249 2,529 4/15/2013 Diamond Hills, CA 35,500 15,458 29,353 — 383 15,458 29,736 45,194 2,701 4/22/2013 Granada Shopping Center, CA — 3,673 13,459 — 387 3,673 13,846 17,519 1,161 6/27/2013 Hawthorne Crossings, CA — 10,383 29,277 — 554 10,383 29,831 40,214 2,399 6/27/2013 Robinwood, CA — 3,997 11,317 — 518 3,997 11,835 15,832 938 8/23/2013 Five Points Plaza, CA — 18,420 36,965 — 2,600 18,420 39,565 57,985 2,456 9/27/2013 Crossroads Shopping Center, CA — 68,366 67,756 — 6,524 68,366 74,280 142,646 5,674 9/27/2013 Peninsula Marketplace, CA — 14,730 19,214 — 49 14,730 19,263 33,993 1,341 11/1/2013 Country Club Village, CA — 9,986 26,579 — 1,603 9,986 28,182 38,168 2,067 11/26/2013 Plaza de la Canada, CA — 10,351 24,819 — 331 10,351 25,150 35,501 1,556 12/13/2013 Tigard Marketplace, CA — 13,587 9,603 — 390 13,587 9,993 23,580 797 2/18/2014 Creekside Plaza, CA — 14,807 29,476 — 122 14,807 29,598 44,405 1,945 2/28/2014 North Park Plaza, CA — 13,593 17,733 — 6 13,593 17,739 31,332 884 4/30/2014 Aurora Square II, WA — 6,862 9,798 — 31 6,862 9,829 16,691 609 5/22/2014 Fallbrook Shopping Center (2) — 21,232 186,197 83 3,556 21,315 189,753 211,068 9,043 6/13/2014 Moorpark Town Center, CA — 7,063 19,694 — 1,096 7,063 20,790 27,853 798 12/4/2014 Mission Foothill Marketplace, CA — 11,415 17,783 — 207 11,415 17,990 29,405 672 12/4/2014 Wilsonville Town Center, OR — 10,334 27,101 — 81 10,334 27,182 37,516 1,059 12/11/2014 Ontario Plaza — 9,825 26,635 — 35 9,825 26,670 36,495 893 1/6/2015 Winston Manor — 10,018 9,762 — 1,729 10,018 11,491 21,509 336 1/7/2015 Jackson Square — 6,886 24,558 — 234 6,886 24,792 31,678 389 7/1/2015 Tigard Promenade — 9,844 10,843 — 7 9,844 10,850 20,694 163 7/28/2015 Sunnyside Village Square — 4,428 13,324 — — 4,428 13,324 17,752 192 7/28/2015 Gateway Centre — 16,275 28,308 — 40 16,275 28,348 44,623 301 9/1/2015 Johnson Creek — 6,290 25,160 — 374 6,290 25,534 31,824 108 11/9/2015 Iron Horse Plaza — 9,111 36,444 — — 9,111 36,444 45,555 78 12/4/2015 Sternco Shopping Center — 9,889 39,558 — — 9,889 39,558 49,447 86 12/10/2015 Four Corner Square — 8,368 33,470 — — 8,368 33,470 41,838 72 12/21/2015 Warner Plaza Shopping Center — 15,777 63,109 — — 15,777 63,109 78,886 — 12/31/2015 $ 61,683 $ 668,855 $ 1,541,563 $ 452 $ 85,747 $ 669,307 $ 1,627,310 $ 2,296,617 $ 134,311 (a) RECONCILIATION OF REAL ESTATE – OWNED SUBJECT TO OPERATING LEASES (in thousands) Year Ended December 31, 2015 2014 2013 Balance at beginning of period: $ 1,785,898 $ 1,372,434 $ 871,694 Property improvements during the year 28,104 27,515 19,514 Properties acquired during the year 485,853 416,298 487,309 Properties sold during the year — (23,676 ) (6,083 ) Assets written off during the year (3,238 ) (6,673 ) — Balance at end of period: $ 2,296,617 $ 1,785,898 $ 1,372,434 (b) RECONCILIATION OF ACCUMULATED DEPRECIATION (in thousands) Year Ended December 31, 2015 2014 2013 Balance at beginning of period: $ 88,173 $ 57,500 $ 32,365 Depreciation expenses 49,619 38,890 25,653 Properties sold during the year — (2,081 ) (433 ) Property assets fully depreciated and written off (3,481 ) (6,136 ) (85 ) Balance at end of period: $ 134,311 $ 88,173 $ 57,500 (1) Depreciation and investments in building and improvements reflected in the consolidated statement of operations is calculated over the estimated useful life of the assets as follows: Building: 39-40 years Property Improvements: 10-20 years (2) Property is subject to a ground lease. (3) The aggregate cost for Federal Income Tax Purposes for real estate was approximately $2.1 billion at December 31, 2015.

Schedule IV - Mortgage Loans on

Schedule IV - Mortgage Loans on Real Estate	12 Months Ended
	Dec. 31, 2015
Mortgage Loans on Real Estate [Abstract]
Mortgage Loans on Real Estate, by Loan Disclosure [Text Block]	SCHEDULE IV – MORTGAGE LOANS ON REAL ESTATE December 31, 2015 (in thousands) The Company has no remaining mortgage loans on real estate as of December 31, 2015 and 2014, respectively. (a) RECONCILIATION OF MORTGAGE LOANS ON REAL ESTATE Year Ended December 31, 2015 2014 2013 Balance at beginning of period: $ — $ — $ 10,000 Mortgage loans eliminated upon consolidation of joint venture — — (10,000 ) Balance at end of period: $ — $ — $ —

Accounting Policies, by Policy

Accounting Policies, by Policy (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In September 2015, the FASB issued Accounting Standards Update (“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 does not expect that the adoption of this pronouncement will have a material impact on the consolidated financial statements. In April 2015, the FASB issued ASU No. 2015-03, “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. A reporting entity may apply the amendments in the ASU retrospectively to all prior periods. The Company expects that the adoption of the pronouncement will result in the presentation of debt issuance costs associated with its term loan, credit facility, Senior Notes Due 2024, Senior Notes Due 2023, and mortgage notes payable which are currently included in deferred charges in its consolidated balance sheets, as a direct reduction from the carrying amount of the related debt instrument. In May 2014, the FASB issued ASU No. 2014-09, “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 reporting periods 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.
Consolidation, Policy [Policy Text Block]	Principles of Consolidation The accompanying consolidated financial statements are prepared on the accrual basis in accordance with GAAP. The consolidated financial statements include the accounts 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. 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 modifies the presentation of net income by requiring earnings and other comprehensive income to be attributed to controlling and non-controlling interests.
Use of Estimates, Policy [Policy Text Block]	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.
Income Tax, Policy [Policy Text Block]	Federal Income Taxes The Company has 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 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 it may qualify as a REIT for U.S. federal income tax purposes, the Company 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 3,290,263 OP Units in connection with the acquisitions of two shopping centers, Crossroads Shopping Center and Five Points Plaza. Accordingly, the Operating Partnership ceased being a disregarded entity and instead is being treated as a partnership for 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 December 31, 2015, the statute of limitations for tax years 2012 through and including 2014 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, Policy [Policy Text Block]	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 years ended December 31, 2015 and 2014, capitalized costs related to the improvements or replacement of real estate properties were approximately $28.1 million and $27.5 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 as of the acquisition date is received and estimates are refined, appropriate property adjustments are made to the purchase price allocation on a retrospective basis. In conjunction with the Company’s pursuit and acquisition of real estate investments, the Company expensed acquisition transaction costs during the years ended December 31, 2015, 2014 and 2013 of approximately $1.0 million, $1.0 million and $1.7 million, respectively. Regarding certain of the Company’s 2015 and all of the Company’s 2014 property acquisitions (see Note 2), the fair value of in-place leases and other intangibles have been allocated to intangible asset and liability accounts. Sales of real estate are recognized only when sufficient down payments have been obtained, possession and other attributes of ownership have been transferred to the buyer and the Company has no significant continuing involvement. The application of these criteria can be complex and requires the Company to make assumptions. Management has determined that all of these criteria were met for all real estate sold during the periods presented. Any reference to square footage or occupancy is unaudited and outside the scope of our independent registered public accounting firm’s audit of the Company’s financial statements in accordance with the standards of the United States Public Company Accounting Oversight Board.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	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 December 31, 2015.
Cash and Cash Equivalents, Policy [Policy Text Block]	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.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	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, Policy [Policy Text Block]	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 and lease incentive amortization 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. Lease incentives are amortized as a reduction of rental revenue over the respective tenant lease terms. 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’s guidance 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) collectivity 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 generally accepted accounting principles 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 and the allowance for bad debts 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 December 31, 2015 and December 31, 2014 was approximately $4.5 million and $3.6 million, respectively.
Depreciation, Depletion, and Amortization [Policy Text Block]	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 Charges, Policy [Policy Text Block]	Deferred Charges Deferred charges consist principally of leasing commissions and acquired lease origination costs (which are amortized ratably over the life of the tenant leases) and financing fees (which are amortized over the term of the related debt obligation). Deferred charges in the accompanying consolidated balance sheets are shown at cost, net of accumulated amortization of approximately $24.1 million and $18.8 million, as of December 31, 2015 and 2014, respectively. The unamortized balances of deferred charges as of December 31, 2015 that will be charged to future operations are as follows (in thousands):
Capitalized Leasing Costs, Policy [Policy Text Block]	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 years ended December 31, 2015, 2014 and 2013, the Company capitalized approximately $1.1 million, $947,000 and $742,000, respectively, of such payroll-related costs.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	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, Policy [Policy Text Block]	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. During the years ended December 31, 2014 and 2013, the effect of approximately 41,400,000 warrants to purchase the Company’s common stock (the “Public Warrants”) issued in connection with the Company’s initial public offering (the “IPO”), and the 8,000,000 warrants (the “Private Placement Warrants”) purchased by NRDC Capital Management, LLC simultaneously with the consummation of the IPO, for the time these were outstanding during these periods, were included in the calculation of diluted EPS since the weighted average share price was greater than the exercise price during these periods. No warrants were outstanding during the year ended December 31, 2015. For the years ended December 31, 2015, 2014 and 2013, 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 grants awarded under the 2009 Plan described in Note 9 are excluded from the basic EPS calculation, as these units are not participating securities. The following table sets forth the reconciliation between basic and diluted EPS for ROIC (in thousands, except share data): Year Ended December 31, 2015 2014 2013 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less income from continuing operations attributable to non-controlling interests (1,228 ) (749 ) (165 ) Less earnings allocated to unvested shares (229 ) (160 ) (78 ) Income from continuing operations available for common shareholders, basic 23,635 20,141 34,449 Loss from discontinued operations available to common shareholders, basic — — (714 ) Net income available to common stockholders, basic $ 23,635 $ 20,141 $ 33,735 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less earnings allocated to unvested shares (229 ) (160 ) (78 ) Income from continuing operations available for common shareholders, diluted 24,863 20,890 34,614 Loss from discontinued operations available to common shareholders, diluted — — (714 ) Net income available to common stockholders, diluted $ 24,863 $ 20,890 $ 33,900 Denominator: Denominator for basic EPS – weighted average common equivalent shares 95,651,780 83,411,230 67,419,497 Warrants — 631,086 2,568,822 OP Units 4,086,724 3,162,658 838,508 Restricted stock awards – performance-based 174,198 162,327 113,066 Stock options 105,079 86,108 64,487 Denominator for diluted EPS – weighted average common equivalent shares 100,017,781 87,453,409 71,004,380 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): Year Ended December 31, 2015 2014 2013 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less earnings allocated to unvested units (229 ) (160 ) (78 ) Income from continuing operations available for unitholders, basic and diluted 24,863 20,890 34,614 Loss from discontinued operations available to unitholders, basic and diluted — — (714 ) Net income available to unitholders, basic and diluted $ 24,863 $ 20,890 $ 33,900 Denominator: Denominator for basic EPS – weighted average common equivalent units 99,738,504 86,573,888 68,258,005 Warrants — 631,086 2,568,822 Restricted stock awards – performance-based 174,198 162,327 113,066 Stock Options 105,079 86,108 64,487 Denominator for diluted EPS – weighted average common equivalent units 100,017,781 87,453,409 71,004,380
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-Based Compensation The Company has a stock-based employee compensation plan, which is more fully described in Note 9. 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 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. Awards of performance-based grants are expensed as compensation under an accelerated method and are recognized in income regardless of the results of the performance criteria.
Non-Controlling Interests, Policy [Policy Text Block]	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 differentiated and referred to as Redeemable OP Units. OP Units that could require settlement in cash result in presentation in the mezzanine section of the balance sheet. See Note 10 for further discussion.
Derivatives, Policy [Policy Text Block]	Derivatives The Company records all derivatives on the balance sheet 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, Policy [Policy Text Block]	Segment Reporting The Company’s primary business is the ownership, management, and redevelopment of retail real estate properties. The Company reviews operating and financing 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.
Reclassification, Policy [Policy Text Block]	Reclassifications Certain reclassifications have been made to the prior period consolidated financial statements and notes to conform to the current year presentation.

Note 1 - Organization, Basis 29

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables) [Line Items]
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]	Lease Origination Costs Financing Costs Total 2016 $ 6,697 $ 2,089 $ 8,786 2017 5,384 2,068 7,452 2018 4,138 2,036 6,174 2019 3,168 647 3,815 2020 2,544 521 3,065 Thereafter 8,164 1,860 10,024 $ 30,095 $ 9,221 $ 39,316
ROIC [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables) [Line Items]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year Ended December 31, 2015 2014 2013 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less income from continuing operations attributable to non-controlling interests (1,228 ) (749 ) (165 ) Less earnings allocated to unvested shares (229 ) (160 ) (78 ) Income from continuing operations available for common shareholders, basic 23,635 20,141 34,449 Loss from discontinued operations available to common shareholders, basic — — (714 ) Net income available to common stockholders, basic $ 23,635 $ 20,141 $ 33,735 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less earnings allocated to unvested shares (229 ) (160 ) (78 ) Income from continuing operations available for common shareholders, diluted 24,863 20,890 34,614 Loss from discontinued operations available to common shareholders, diluted — — (714 ) Net income available to common stockholders, diluted $ 24,863 $ 20,890 $ 33,900 Denominator: Denominator for basic EPS – weighted average common equivalent shares 95,651,780 83,411,230 67,419,497 Warrants — 631,086 2,568,822 OP Units 4,086,724 3,162,658 838,508 Restricted stock awards – performance-based 174,198 162,327 113,066 Stock options 105,079 86,108 64,487 Denominator for diluted EPS – weighted average common equivalent shares 100,017,781 87,453,409 71,004,380 Year Ended December 31, 2015 2014 2013 Numerator: Income from continuing operations $ 25,092 $ 21,050 $ 34,692 Less earnings allocated to unvested units (229 ) (160 ) (78 ) Income from continuing operations available for unitholders, basic and diluted 24,863 20,890 34,614 Loss from discontinued operations available to unitholders, basic and diluted — — (714 ) Net income available to unitholders, basic and diluted $ 24,863 $ 20,890 $ 33,900 Denominator: Denominator for basic EPS – weighted average common equivalent units 99,738,504 86,573,888 68,258,005 Warrants — 631,086 2,568,822 Restricted stock awards – performance-based 174,198 162,327 113,066 Stock Options 105,079 86,108 64,487 Denominator for diluted EPS – weighted average common equivalent units 100,017,781 87,453,409 71,004,380

Note 2 - Real Estate Investme30

Note 2 - Real Estate Investments (Tables)	12 Months Ended
	Dec. 31, 2015
Real Estate Investments Disclosure [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	December 31, 2015 December 31, 2014 ASSETS Land $ 118,898 $ 98,891 Building and improvements 366,977 317,385 Acquired lease intangible asset 13,214 32,200 Deferred charges 4,799 10,336 Assets acquired $ 503,888 $ 458,812 LIABILITIES Acquired lease intangible liability $ 20,925 $ 44,264 Liabilities assumed $ 20,925 $ 44,264
Business Acquisition, Pro Forma Information [Table Text Block]	Year Ended December 31, Statement of operations: 2015 2014 Revenues $ 213,475 $ 204,584 Property operating and other expenses 104,629 94,709 Depreciation and amortization 80,709 80,012 Net income attributable to Retail Opportunity Investments Corp. $ 28,137 $ 29,863
Condensed Income Statement [Table Text Block]	Year Ended December 31, 2015 Statement of operations: Revenues $ 12,706 Property operating and other expenses 3,849 Depreciation and amortization 6,008 Net income attributable to Retail Opportunity Investments Corp. $ 2,849 Year Ended December 31, 2014 Statement of operations: Revenues $ 16,234 Property operating and other expenses 4,643 Depreciation and amortization 7,674 Net income attributable to Retail Opportunity Investments Corp. $ 3,917

Note 3 - Acquired Lease Intan31

Note 3 - Acquired Lease Intangibles (Tables)	12 Months Ended
	Dec. 31, 2015
Note 3 - Acquired Lease Intangibles (Tables) [Line Items]
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	December 31, 2015 December 31, 2014 Assets: In-place leases $ 79,996 $ 78,549 Accumulated amortization (28,535 ) (25,482 ) Above-market leases 25,575 26,197 Accumulated amortization (10,094 ) (7,831 ) Acquired lease intangible assets, net $ 66,942 $ 71,433 Liabilities: Below-market leases $ 155,169 $ 141,552 Accumulated amortization (30,308 ) (23,193 ) Acquired lease intangible liabilities, net $ 124,861 $ 118,359
Acquired Lease Intangible Assets [Member]
Note 3 - Acquired Lease Intangibles (Tables) [Line Items]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year ending December 31: 2016 $ 13,116 2017 10,421 2018 7,687 2019 5,146 2020 4,291 Thereafter 26,281 Total future amortization of acquired lease intangible assets $ 66,942
Acquired Lease Intangible Liabilities [Member]
Note 3 - Acquired Lease Intangibles (Tables) [Line Items]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year ending December 31: 2016 $ 11,260 2017 10,362 2018 9,508 2019 8,764 2020 7,950 Thereafter 77,017 Total future amortization of acquired lease intangible liabilities $ 124,861

Note 4 - Tenant Leases (Tables)

Note 4 - Tenant Leases (Tables)	12 Months Ended
	Dec. 31, 2015
Leases, Operating [Abstract]
Schedule of Future Minimum Base Rentals on NonCancellable Operating Leases [Table Text Block]	Year ending December 31: 2016 $ 147,424 2017 133,215 2018 113,062 2019 92,300 2020 74,680 Thereafter 351,703 Total minimum lease payments $ 912,384

Note 6 - Mortgage Notes Payab33

Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of Debt [Table Text Block]	Property Maturity Date Interest Rate December 31, 2015 December 31, 2014 Renaissance Towne Centre June 2015 5.13 % $ — $ 16,205 Crossroads Shopping Center September 2015 6.50 % — 48,581 Gateway Village III July 2016 6.10 % 7,166 7,270 Bernardo Heights Plaza July 2017 5.70 % 8,404 8,581 Santa Teresa Village February 2018 6.20 % 10,613 10,830 Diamond Hills Plaza October 2025 3.55 % 35,500 — $ 61,683 $ 91,467 Mortgage Premium 922 2,716 Total mortgage notes payable $ 62,605 $ 94,183
Schedule of Maturities of Long-term Debt [Table Text Block]	Principal Repayments Scheduled Amortization Mortgage Premium Total 2016 $ 7,112 $ 474 $ 517 $ 8,103 2017 8,099 361 381 8,841 2018 10,094 43 24 10,161 2019 — — — — 2020 — — — — Thereafter 32,787 2,713 — 35,500 Total $ 58,092 $ 3,591 $ 922 $ 62,605
Schedule of Long-term Debt Instruments [Table Text Block]	December 31, 2015 December 31, 2014 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (3,191 ) (3,479 ) Senior Notes Due 2024: $ 246,809 $ 246,521 December 31, 2015 December 31, 2014 Principal amount $ 250,000 $ 250,000 Unamortized debt discount (3,482 ) (3,826 ) Senior Notes Due 2023: $ 246,518 $ 246,174

Note 9 - Stock Compensation a34

Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Tables)	12 Months Ended
	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	Shares Weighted Average Non-vested at December 31, 2014 559,358 $ 11.51 Granted 343,070 $ 15.58 Vested (272,125 ) $ 12.10 Forfeited (2,832 ) $ 15.88 Non-vested at December 31, 2015 627,471 $ 14.39

Note 12 - Derivative and Hedg35

Note 12 - Derivative and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments, Gain (Loss) [Table Text Block]	Year Ended Year Ended Year Ended Amount of (loss) gain recognized in OCI on derivative $ — $ (3,132 ) $ 4,565 Amount of loss reclassified from accumulated OCI into interest $ 2,139 $ 3,219 $ 4,621 Amount of gain recognized in income on derivative (ineffective portion and amount excluded from effectiveness testing) $ — $ — $ 3

Note 13 - Commitments and Con36

Note 13 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Operating Leases 2016 $ 981 2017 1,049 2018 1,054 2019 1,059 2020 1,067 Thereafter 36,204 Total minimum lease payments $ 41,414

Note 15 - Quarterly Results o37

Note 15 - Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2015
Note 15 - Quarterly Results of Operations (Unaudited) (Tables) [Line Items]
Schedule of Quarterly Financial Information [Table Text Block]	Year Ended December 31, 2015 March 31 June 30 September 30 December 31 Total revenues $ 45,122 $ 46,215 $ 50,077 $ 51,285 Net income $ 4,376 $ 5,411 $ 7,837 $ 7,468 Net income attributable to ROIC $ 4,200 $ 5,201 $ 7,542 $ 6,921 Basic income per share $ 0.04 $ 0.05 $ 0.08 $ 0.07 Diluted income per share $ 0.04 $ 0.05 $ 0.08 $ 0.07 Year Ended December 31, 2014 March 31 June 30 September 30 December 31 Total revenues $ 36,350 $ 36,915 $ 40,856 $ 41,743 Net income $ 3,266 $ 6,051 $ 6,981 $ 4,752 Net income attributable to ROIC $ 3,132 $ 5,834 $ 6,748 $ 4,587 Basic income per share $ 0.04 $ 0.08 $ 0.07 $ 0.05 Diluted income per share $ 0.04 $ 0.07 $ 0.07 $ 0.05
Retail Opportunity Investments Partnership L.P. [Member]
Note 15 - Quarterly Results of Operations (Unaudited) (Tables) [Line Items]
Schedule of Quarterly Financial Information [Table Text Block]	Year Ended December 31, 2015 March 31 June 30 September 30 December 31 Total revenues $ 45,122 $ 46,215 $ 50,077 $ 51,285 Net income attributable to the Operating Partnership $ 4,376 $ 5,411 $ 7,837 $ 7,468 Basic income per unit $ 0.04 $ 0.05 $ 0.08 $ 0.07 Diluted income per unit $ 0.04 $ 0.05 $ 0.08 $ 0.07 Year Ended December 31, 2014 March 31 June 30 September 30 December 31 Total revenues $ 36,350 $ 36,915 $ 40,856 $ 41,743 Net income attributable to the Operating Partnership $ 3,266 $ 6,051 $ 6,981 $ 4,752 Basic income per unit $ 0.04 $ 0.07 $ 0.07 $ 0.05 Diluted income per unit $ 0.04 $ 0.07 $ 0.07 $ 0.05

Schedule III - Real Estate an38

Schedule III - Real Estate and Accumulated Depreciation (Tables)	12 Months Ended
	Dec. 31, 2015
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule of Real Estate Properties [Table Text Block]	Initial Cost to Company Cost Capitalized Subsequent to Acquisition Amount at Which Carried at Close of Period Building & Building & Building & Accumulated (1) Date of (a) Paramount Plaza, CA $ — $ 6,347 $ 10,274 $ 214 $ 1,306 $ 6,561 $ 11,580 $ 18,141 $ 2,093 12/22/2009 Santa Ana Downtown Plaza, CA — 7,895 9,890 — 1,018 7,895 10,908 18,803 1,989 1/26/2010 Meridian Valley Plaza, WA — 1,881 4,795 — 555 1,881 5,350 7,231 964 2/1/2010 The Market at Lake Stevens, WA — 3,087 12,397 — 313 3,087 12,710 15,797 2,216 3/16/2010 Norwood Shopping Center, CA — 3,031 11,534 122 1,086 3,153 12,620 15,773 2,101 4/5/2010 Pleasant Hill Marketplace, CA — 6,359 6,927 — 741 6,359 7,668 14,027 1,538 4/8/2010 Vancouver Market Center, WA — 4,080 6,912 — 735 4,080 7,647 11,727 1,183 6/17/2010 Happy Valley Town Center, OR — 11,678 27,011 — 1,742 11,678 28,753 40,431 4,838 7/14/2010 Cascade Summit, OR — 8,853 7,732 — 332 8,853 8,064 16,917 1,638 8/20/2010 Heritage Market Center, WA — 6,595 17,399 — 408 6,595 17,807 24,402 2,928 9/23/2010 Claremont Center, CA (2) — 5,975 1,019 183 4,360 6,158 5,379 11,537 1,580 9/23/2010 Shops At Sycamore Creek, CA — 3,747 11,584 — 880 3,747 12,464 16,211 2,520 9/30/2010 Gateway Village, CA 7,166 5,917 27,298 — 510 5,917 27,808 33,725 4,053 12/16/2010 Division Crossing, OR — 3,706 8,327 — 5,713 3,706 14,040 17,746 1,967 12/22/2010 Halsey Crossing, OR (2) — — 7,773 — 798 — 8,571 8,571 1,401 12/22/2010 Marketplace Del Rio,CA — 13,420 22,251 — 1,681 13,420 23,932 37,352 3,774 1/3/2011 Pinole Vista, CA — 12,894 30,670 — 2,134 12,894 32,804 45,698 3,645 1/6/2011 Desert Spring Marketplace, CA — 8,517 18,761 (160 ) 1,513 8,357 20,274 28,631 3,327 2/17/2011 Mills Shopping Center, CA — 4,084 16,833 — 6,570 4,084 23,403 27,487 3,675 2/17/2011 Morada Ranch, CA — 2,504 19,547 — 509 2,504 20,056 22,560 3,007 5/20/2011 Renaissance, CA — 8,640 13,848 — 441 8,640 14,289 22,929 1,947 8/3/2011 Country Club Gate, CA — 6,487 17,341 — 1,000 6,487 18,341 24,828 2,672 7/8/2011 Canyon Park, WA — 9,352 15,916 — 3,215 9,352 19,131 28,483 2,281 7/29/2011 Hawks Prairie, WA — 5,334 20,694 — 436 5,334 21,130 26,464 2,797 9/8/2011 Kress Building, WA — 5,693 20,866 — 4,672 5,693 25,538 31,231 3,351 9/30/2011 Round Hill Square, CA — 6,358 17,734 — 950 6,358 18,684 25,042 2,681 8/23/2011 Hillsboro, OR (2) — — 18,055 — 587 — 18,642 18,642 2,486 11/23/2011 Gateway Shopping Center, WA (2) — 6,242 23,462 — 30 6,242 23,492 29,734 2,732 2/16/2012 Euclid Plaza, CA — 7,407 7,753 — 2,859 7,407 10,612 18,019 1,527 3/28/2012 Green Valley, CA — 1,685 8,999 — 414 1,685 9,413 11,098 1,282 4/2/2012 Aurora Square, WA — 3,002 1,693 — (28 ) 3,002 1,665 4,667 324 5/3/2012 Marlin Cove, CA — 8,815 6,797 — 1,384 8,815 8,181 16,996 1,160 5/4/2012 Seabridge, CA — 5,098 17,164 — 658 5,098 17,822 22,920 2,257 5/31/2012 Novato, CA — 5,329 4,412 — 937 5,329 5,349 10,678 527 7/24/2012 Glendora, CA — 5,847 8,758 — 164 5,847 8,922 14,769 1,139 8/1/2012 Wilsonville, WA — 4,181 15,394 — 249 4,181 15,643 19,824 1,703 8/1/2012 Bay Plaza, CA — 5,454 14,857 — 1,274 5,454 16,131 21,585 1,748 10/5/2012 Santa Theresa, CA 10,613 14,965 17,162 — 2,954 14,965 20,116 35,081 2,202 11/8/2012 Cypress West, CA — 15,480 11,819 5 1,966 15,485 13,785 29,270 1,480 12/7/2012 Redondo Beach, CA — 16,242 13,625 5 16 16,247 13,641 29,888 1,326 12/28/2012 Harbor Place, CA — 16,506 10,527 — 324 16,506 10,851 27,357 977 12/28/2012 Diamond Bar Town Center, CA — 9,540 16,795 — 3,608 9,540 20,403 29,943 2,019 2/1/2013 Bernardo Heights, CA 8,404 3,192 8,940 — 720 3,192 9,660 12,852 849 2/6/2013 Canyon Crossing, WA — 7,941 24,659 — 2,649 7,941 27,308 35,249 2,529 4/15/2013 Diamond Hills, CA 35,500 15,458 29,353 — 383 15,458 29,736 45,194 2,701 4/22/2013 Granada Shopping Center, CA — 3,673 13,459 — 387 3,673 13,846 17,519 1,161 6/27/2013 Hawthorne Crossings, CA — 10,383 29,277 — 554 10,383 29,831 40,214 2,399 6/27/2013 Robinwood, CA — 3,997 11,317 — 518 3,997 11,835 15,832 938 8/23/2013 Five Points Plaza, CA — 18,420 36,965 — 2,600 18,420 39,565 57,985 2,456 9/27/2013 Crossroads Shopping Center, CA — 68,366 67,756 — 6,524 68,366 74,280 142,646 5,674 9/27/2013 Peninsula Marketplace, CA — 14,730 19,214 — 49 14,730 19,263 33,993 1,341 11/1/2013 Country Club Village, CA — 9,986 26,579 — 1,603 9,986 28,182 38,168 2,067 11/26/2013 Plaza de la Canada, CA — 10,351 24,819 — 331 10,351 25,150 35,501 1,556 12/13/2013 Tigard Marketplace, CA — 13,587 9,603 — 390 13,587 9,993 23,580 797 2/18/2014 Creekside Plaza, CA — 14,807 29,476 — 122 14,807 29,598 44,405 1,945 2/28/2014 North Park Plaza, CA — 13,593 17,733 — 6 13,593 17,739 31,332 884 4/30/2014 Aurora Square II, WA — 6,862 9,798 — 31 6,862 9,829 16,691 609 5/22/2014 Fallbrook Shopping Center (2) — 21,232 186,197 83 3,556 21,315 189,753 211,068 9,043 6/13/2014 Moorpark Town Center, CA — 7,063 19,694 — 1,096 7,063 20,790 27,853 798 12/4/2014 Mission Foothill Marketplace, CA — 11,415 17,783 — 207 11,415 17,990 29,405 672 12/4/2014 Wilsonville Town Center, OR — 10,334 27,101 — 81 10,334 27,182 37,516 1,059 12/11/2014 Ontario Plaza — 9,825 26,635 — 35 9,825 26,670 36,495 893 1/6/2015 Winston Manor — 10,018 9,762 — 1,729 10,018 11,491 21,509 336 1/7/2015 Jackson Square — 6,886 24,558 — 234 6,886 24,792 31,678 389 7/1/2015 Tigard Promenade — 9,844 10,843 — 7 9,844 10,850 20,694 163 7/28/2015 Sunnyside Village Square — 4,428 13,324 — — 4,428 13,324 17,752 192 7/28/2015 Gateway Centre — 16,275 28,308 — 40 16,275 28,348 44,623 301 9/1/2015 Johnson Creek — 6,290 25,160 — 374 6,290 25,534 31,824 108 11/9/2015 Iron Horse Plaza — 9,111 36,444 — — 9,111 36,444 45,555 78 12/4/2015 Sternco Shopping Center — 9,889 39,558 — — 9,889 39,558 49,447 86 12/10/2015 Four Corner Square — 8,368 33,470 — — 8,368 33,470 41,838 72 12/21/2015 Warner Plaza Shopping Center — 15,777 63,109 — — 15,777 63,109 78,886 — 12/31/2015 $ 61,683 $ 668,855 $ 1,541,563 $ 452 $ 85,747 $ 669,307 $ 1,627,310 $ 2,296,617 $ 134,311
Other Real Estate, Roll Forward [Table Text Block]	Year Ended December 31, 2015 2014 2013 Balance at beginning of period: $ 1,785,898 $ 1,372,434 $ 871,694 Property improvements during the year 28,104 27,515 19,514 Properties acquired during the year 485,853 416,298 487,309 Properties sold during the year — (23,676 ) (6,083 ) Assets written off during the year (3,238 ) (6,673 ) — Balance at end of period: $ 2,296,617 $ 1,785,898 $ 1,372,434
Reconciliation of Real Estate Accumulated Depreciation [Table Text Block]	Year Ended December 31, 2015 2014 2013 Balance at beginning of period: $ 88,173 $ 57,500 $ 32,365 Depreciation expenses 49,619 38,890 25,653 Properties sold during the year — (2,081 ) (433 ) Property assets fully depreciated and written off (3,481 ) (6,136 ) (85 ) Balance at end of period: $ 134,311 $ 88,173 $ 57,500

Schedule IV - Mortgage Loans 39

Schedule IV - Mortgage Loans on Real Estate (Tables)	12 Months Ended
	Dec. 31, 2015
Mortgage Loans on Real Estate [Abstract]
Movement in Mortgage Loans on Real Estate Roll Forward [Table Text Block]	Year Ended December 31, 2015 2014 2013 Balance at beginning of period: $ — $ — $ 10,000 Mortgage loans eliminated upon consolidation of joint venture — — (10,000 ) Balance at end of period: $ — $ — $ —

Note 1 - Organization, Basis 40

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details)	Sep. 27, 2013shares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)shares	Dec. 31, 2013USD ($)shares
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Taxable Income Minimum Distribution Portion Not Subject to Federal Taxation, Percentage		90.00%
Real Estate, Improvements		$ 28,100,000	$ 27,500,000
Number of Years from Aquisition Date		1 year
Acquisition Costs, Period Cost		$ 965,000	961,000	$ 1,688,000
Allowance for Doubtful Accounts Receivable		4,500,000	3,600,000
Deferred Costs, Leasing, Accumulated Amortization		24,100,000	18,800,000
Payroll Related Costs Capitalized		$ 1,100,000	$ 947,000	$ 742,000
Class of Warrant or Right, Outstanding (in Shares) | shares		0
Number of Reportable Segments		1
OP Units [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares	3,290,263
Public Warrants [Member] | Original Number Outstanding [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Class of Warrant or Right, Outstanding (in Shares) | shares			41,400,000	41,400,000
Private Placement Warrants [Member] | Original Number Outstanding [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Class of Warrant or Right, Outstanding (in Shares) | shares			8,000,000	8,000,000
Minimum [Member] | Building [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		39 years
Minimum [Member] | Building Improvements [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Minimum [Member] | Furniture and Fixtures [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		3 years
Maximum [Member] | Building [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		40 years
Maximum [Member] | Building Improvements [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		20 years
Maximum [Member] | Furniture and Fixtures [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life		10 years

Note 1 - Organization, Basis 41

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges [Line Items]
2,016	$ 8,786
2,017	7,452
2,018	6,174
2,019	3,815
2,020	3,065
Thereafter	10,024
	39,316	$ 39,731
Deferred Lease Origination Costs [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges [Line Items]
2,016	6,697
2,017	5,384
2,018	4,138
2,019	3,168
2,020	2,544
Thereafter	8,164
	30,095
Deferred Financing Costs [Member]
Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Unamortized Balances of Deferred Charges [Line Items]
2,016	2,089
2,017	2,068
2,018	2,036
2,019	647
2,020	521
Thereafter	1,860
	$ 9,221

Note 1 - Organization, Basis 42

Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Reconciliation Between Basic and Diluted EPS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator:
Income from Continuing Operations	$ 25,092	$ 21,050	$ 34,692
Less income from continuing operations attributable to non-controlling interests	(1,228)	(749)	(165)
Less Earnings Allocated to Unvested Shares	(229)	(160)	(78)
Less earnings allocated to unvested shares	(229)	(160)	(78)
Denominator:
Income from continuing operations available for common shareholders, diluted	24,863	20,890	34,614
Loss from discontinued operations available to common shareholders, diluted			(714)
Net income available to common stockholders, diluted	$ 24,863	$ 20,890	$ 33,900
Denominator:
Denominator for basic EPS – weighted average common equivalent shares (in Shares)	95,651,780	83,411,230	67,419,497
Denominator for diluted EPS – weighted average common equivalent shares (in Shares)	100,017,781	87,453,409	71,004,380
Income from continuing operations available for common shareholders, basic	$ 23,635	$ 20,141	$ 34,449
Loss from discontinued operations available to common shareholders, basic			(714)
Net income available to common stockholders, basic	23,635	$ 20,141	$ 33,735
Warrant [Member]
Denominator:
Warrants (in Shares)		631,086	2,568,822
Retail Opportunity Investments Partnership L.P. [Member]
Numerator:
Income from Continuing Operations	25,092	$ 21,050	$ 34,692
Less Earnings Allocated to Unvested Shares	(229)	(160)	(78)
Income from continuing operations available for unitholders, basic and diluted	24,863	20,890	34,614
Loss from discontinued operations available to unitholders, basic and diluted			(714)
Net income available to unitholders, basic and diluted	$ 24,863	$ 20,890	$ 33,900
Denominator:
Denominator for basic EPS – weighted average common equivalent shares (in Shares)	99,738,504	86,573,888	68,258,005
Denominator for diluted EPS – weighted average common equivalent shares (in Shares)	100,017,781	87,453,409	71,004,380
Retail Opportunity Investments Partnership L.P. [Member] | Warrant [Member]
Denominator:
Warrants (in Shares)		631,086	2,568,822
OP Units [Member]
Denominator:
OP Units (in Shares)	4,086,724	3,162,658	838,508
Performance Shares [Member]
Denominator:
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements (in Shares)	174,198	162,327	113,066
Performance Shares [Member] | Retail Opportunity Investments Partnership L.P. [Member]
Denominator:
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements (in Shares)	174,198	162,327	113,066
Employee Stock Option [Member]
Denominator:
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements (in Shares)	105,079	86,108	64,487
Employee Stock Option [Member] | Retail Opportunity Investments Partnership L.P. [Member]
Denominator:
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements (in Shares)	105,079	86,108	64,487

Note 2 - Real Estate Investme43

Note 2 - Real Estate Investments (Details) $ in Thousands

Dec. 31, 2015USD ($)ft²shares

Dec. 21, 2015USD ($)ft²

Dec. 10, 2015USD ($)ft²shares

Dec. 04, 2015USD ($)ft²shares

Nov. 09, 2015USD ($)ft²

Sep. 01, 2015USD ($)ft²

Jul. 28, 2015USD ($)ft²

Jul. 01, 2015USD ($)ft²

May. 06, 2015USD ($)

Jan. 07, 2015USD ($)ft²

Jan. 06, 2015USD ($)ft²

Aug. 25, 2014USD ($)

Jun. 05, 2014USD ($)

May. 31, 2014

Sep. 27, 2013USD ($)shares

Sep. 26, 2013USD ($)

Dec. 31, 2014USD ($)ft²

Dec. 31, 2013USD ($)

Dec. 31, 2012USD ($)

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 414,500

Area of Real Estate Property (in Square Feet) | ft²

1,600,000

NumberofRealEstatePropertiesAcquired

8

Proceeds from Sale of Real Estate

$ 27,622

$ 5,608

Gains (Losses) on Sales of Investment Real Estate

4,869

Transfer of Equity Investment in Property to Real Estate Investment

15,991

Gain On Consolidation of Joint Venture

$ 20,382

Park Oaks Shopping Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 47,700

Area of Real Estate Property (in Square Feet) | ft²

110,000

Ontario Plaza [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 31,000

Area of Real Estate Property (in Square Feet) | ft²

150,000

Winston Manor Shopping Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 20,500

Area of Real Estate Property (in Square Feet) | ft²

50,000

Pinole Vista Shopping Center and Canyon Park Shopping Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 23,100

Jackson Square [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 32,500

Area of Real Estate Property (in Square Feet) | ft²

114,000

Sunnyside Village Square [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 17,500

Area of Real Estate Property (in Square Feet) | ft²

85,000

Tigard Promenade [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 21,000

Area of Real Estate Property (in Square Feet) | ft²

88,000

Gateway Centre [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 42,500

Area of Real Estate Property (in Square Feet) | ft²

110,000

Johnson Creek Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Area of Real Estate Property (in Square Feet) | ft²

109,000

Business Acquisition Adjusted Purchase Price

$ 31,400

Iron Horse Plaza [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Area of Real Estate Property (in Square Feet) | ft²

62,000

Business Acquisition Adjusted Purchase Price

$ 45,600

Limited Partners' Capital Account, Units Issued (in Shares) | shares

1,232,394

Stock Issued During Period, Value, Acquisitions

$ 22,400

Business Combination, Consideration Transferred, Liabilities Incurred

19,000

Iron Horse Plaza [Member] | Notes Payable, Other Payables [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Debt Instrument, Face Amount

$ 6,700

Sternoco Shopping Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Area of Real Estate Property (in Square Feet) | ft²

114,000

Business Acquisition Adjusted Purchase Price

$ 49,400

Limited Partners' Capital Account, Units Issued (in Shares) | shares

2,823,790

Stock Issued During Period, Value, Acquisitions

$ 49,300

Four Corner Square [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Business Combination, Consideration Transferred

$ 41,800

Area of Real Estate Property (in Square Feet) | ft²

120,000

Warner Plaza [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Area of Real Estate Property (in Square Feet) | ft²

114,000

Business Acquisition Adjusted Purchase Price

$ 78,900

Limited Partners' Capital Account, Units Issued (in Shares) | shares

4,393,064

Stock Issued During Period, Value, Acquisitions

$ 78,600

Phillips Village Shopping Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Shopping Center Occupancy, Percentage

10.40%

Sales Price of Property Sold

$ 16,000

Proceeds from Sale of Real Estate

$ 15,600

Gains (Losses) on Sales of Investment Real Estate

3,300

Oregon City Point Shopping Center [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Sales Price of Property Sold

$ 12,400

Proceeds from Sale of Real Estate

$ 12,000

Gains (Losses) on Sales of Investment Real Estate

$ 1,600

Terranomics Crossroads Associates, LP [Member]

Note 2 - Real Estate Investments (Details) [Line Items]

Limited Partners' Capital Account, Units Issued (in Shares) | shares

2,639,632

Stock Issued During Period, Value, Acquisitions

$ 36,400

Business Combination, Consideration Transferred, Liabilities Incurred

49,600

Equity Method Investment, Ownership Percentage

49.00%

Equity Method Investments

$ 15,300

Transfer of Equity Investment in Property to Real Estate Investment

$ 16,000

Equity Method Investments Fair Value Disclosure Prior To Acquisition

$ 36,000

Gain On Consolidation of Joint Venture

$ 20,400

Note 2 - Real Estate Investme44

Note 2 - Real Estate Investments (Details) - Purchase Price Allocation of Properties Acquired - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Land	$ 118,898	$ 98,891
Building and improvements	366,977	317,385
Acquired lease intangible asset	13,214	32,200
Deferred charges	4,799	10,336
Assets acquired	503,888	458,812
LIABILITIES
Acquired lease intangible liability	20,925	44,264
Liabilities assumed	$ 20,925	$ 44,264

Note 2 - Real Estate Investme45

Note 2 - Real Estate Investments (Details) - Pro Forma Financial Information - Results of Operations Had the Acquisitions Occured at the Beginning of the Year - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Pro Forma Financial Information - Results of Operations Had the Acquisitions Occured at the Beginning of the Year [Abstract]
Revenues	$ 213,475	$ 204,584
Property operating and other expenses	104,629	94,709
Depreciation and amortization	80,709	80,012
Net income attributable to Retail Opportunity Investments Corp.	$ 28,137	$ 29,863

Note 2 - Real Estate Investme46

Note 2 - Real Estate Investments (Details) - Operating Results Included in the Company's Historical Consolidated Statement of Operations for Properties Acquired During the Reported Periods - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of operations:
Revenues	$ 51,285	$ 50,077	$ 46,215	$ 45,122	$ 41,743	$ 40,856	$ 36,915	$ 36,350	$ 192,699	$ 155,864	$ 111,232
Depreciation and amortization									70,957	58,435	40,398
Net income attributable to Retail Opportunity Investments Corp.	$ 6,921	$ 7,542	$ 5,201	$ 4,200	$ 4,587	$ 6,748	$ 5,834	$ 3,132	23,864	20,301	$ 33,813
Attributable to Acquired Properties During the Reporting Periods [Member]
Statement of operations:
Revenues									12,706	16,234
Property operating and other expenses									3,849	4,643
Depreciation and amortization									6,008	7,674
Net income attributable to Retail Opportunity Investments Corp.									$ 2,849	$ 3,917

Note 3 - Acquired Lease Intan47

Note 3 - Acquired Lease Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disclosure Text Block [Abstract]
Amortization of above and below Market Leases	$ (9,890)	$ (6,945)	$ (4,444)
Amortization of Acquired in Place Leases	$ 13,200	$ 12,500	$ 10,300

Note 3 - Acquired Lease Intan48

Note 3 - Acquired Lease Intangibles (Details) - Intangible Assets and Liabilities - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets:
Assets aquired in place	$ 66,942	$ 71,433
Liabilities:
Below-market leases	155,169	141,552
Accumulated amortization	(30,308)	(23,193)
Acquired lease intangible liabilities, net	124,861	118,359
Leases, Acquired-in-Place [Member]
Assets:
Assets aquired in place	79,996	78,549
Accumulated amortization	(28,535)	(25,482)
Above Market Leases [Member]
Assets:
Assets aquired in place	25,575	26,197
Accumulated amortization	$ (10,094)	$ (7,831)

Note 3 - Acquired Lease Intan49

Note 3 - Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Assets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 3 - Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Assets [Line Items]
Total future amortization of acquired lease intangible assets	$ 66,942	$ 71,433
Acquired Lease Intangible Assets [Member]
Note 3 - Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Assets [Line Items]
2,016	13,116
2,017	10,421
2,018	7,687
2,019	5,146
2,020	4,291
Thereafter	26,281
Total future amortization of acquired lease intangible assets	$ 66,942

Note 3 - Acquired Lease Intan50

Note 3 - Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Liabilities - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 3 - Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Liabilities [Line Items]
Total future amortization of acquired lease intangible liabilities	$ 124,861	$ 118,359
Acquired Lease Intangible Liabilities [Member]
Note 3 - Acquired Lease Intangibles (Details) - Future Amortization of Acquired Lease Intangible Liabilities [Line Items]
2,016	11,260
2,017	10,362
2,018	9,508
2,019	8,764
2,020	7,950
Thereafter	77,017
Total future amortization of acquired lease intangible liabilities	$ 124,861

Note 4 - Tenant Leases (Details

Note 4 - Tenant Leases (Details) - Minimum Future Rentals to be Received under Non-cancellable Leases $ in Thousands	Dec. 31, 2015USD ($)
Minimum Future Rentals to be Received under Non-cancellable Leases [Abstract]
2,016	$ 147,424
2,017	133,215
2,018	113,062
2,019	92,300
2,020	74,680
Thereafter	351,703
Total minimum lease payments	$ 912,384

Note 5 - Discontinued Operati52

Note 5 - Discontinued Operations (Details) - USD ($)	Jun. 05, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 5 - Discontinued Operations (Details) [Line Items]
Proceeds from Sale of Real Estate		$ 27,622,000	$ 5,608,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			(714,000)
Nimbus Village Shopping Center [Member]
Note 5 - Discontinued Operations (Details) [Line Items]
Sales Price of Property Sold	$ 6,300,000
Proceeds from Sale of Real Estate	$ 5,600,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			$ (714,000)
Real Estate Held-for-sale				$ 6,300,000

Note 6 - Mortgage Notes Payab53

Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - USD ($)	Sep. 01, 2015	Dec. 03, 2014	Dec. 09, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 29, 2015	Aug. 10, 2015
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Repayments of Secured Debt				$ 84,308,000	$ 21,982,000	$ 14,902,000
Long-term Debt, Gross				61,683,000	91,467,000
Loans Payable				300,000,000
Long-term Line of Credit				135,500,000	156,500,000
Revolving Credit Facility [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 500,000,000				$ 500,000,000
Line of Credit Facility, Expiration Date				Jan. 31, 2019
Long-term Line of Credit				$ 135,500,000
Line of Credit Facility, Interest Rate During Period				1.20%
Line of Credit Facility, Remaining Borrowing Capacity				$ 364,500,000
Revolving Credit Facility [Member] | Accordion Feature [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,000,000,000
Loan Agreements [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Line of Credit Facility, Commitment Fee Percentage				0.20%
Line of Credit, Fronting Fee				0.125%
Eurodollar [Member] | Loan Agreements [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.00%
Federal Funds Rate [Member] | Loan Agreements [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				0.50%
Renaissance Towne Centre Mortgage Note [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Repayments of Secured Debt				$ 16,100,000
Crossroads Shopping Center [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Repayments of Secured Debt				$ 48,300,000
Term Loan Agreement [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Maturity Date				Jan. 31, 2019
Debt Instrument, Face Amount							$ 300,000,000
Term Loan, Additional Borrowing Capacity							$ 200,000,000
Loans Payable				$ 300,000,000
Debt Instrument, Interest Rate During Period				1.30%
Term Loan Agreement [Member] | Federal Funds Effective Swap Rate [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				0.50%
Term Loan Agreement [Member] | Eurodollar [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.10%
Senior Notes 2024 [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.00%
Debt Instrument, Maturity Date		Dec. 15, 2024
Debt Instrument, Face Amount		$ 250,000,000		$ 250,000,000	250,000,000
Interest Expense, Debt				10,000,000	750,000
Amortization of Debt Discount (Premium)				288,000	21,000
Deferred Finance Costs, Gross		$ 2,200,000
Senior Notes 2023 [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.00%
Debt Instrument, Maturity Date			Dec. 15, 2023
Debt Instrument, Face Amount			$ 250,000,000	250,000,000	250,000,000
Interest Expense, Debt				12,500,000	12,400,000
Amortization of Debt Discount (Premium)				344,000	329,000
Deferred Finance Costs, Gross			$ 2,600,000
Diamond Hills Plaza [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Long-term Debt, Gross				$ 35,500,000	$ 0
Debt Instrument, Interest Rate, Stated Percentage				3.55%
Diamond Hills Plaza [Member] | PNC Bank, National Association [Member] | Secured Debt [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) [Line Items]
Long-term Debt, Gross	$ 35,500,000
Debt Instrument, Interest Rate, Stated Percentage	3.55%
Debt Instrument, Maturity Date				Oct. 1, 2025
Debt Instrument, Interest Only Date				Sep. 30, 2021
Debt Instrument, Amortization Period	30 years

Note 6 - Mortgage Notes Payab54

Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Balance	$ 61,683	$ 91,467
Mortgage Premium	922	2,716
Total mortgage notes payable	$ 62,605	94,183
Renaissance Towne Center [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Interest Rate	5.13%
Balance	$ 0	16,205
Crossroads Shopping Center [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Interest Rate	6.50%
Balance	$ 0	48,581
Gateway Village III [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Interest Rate	6.10%
Balance	$ 7,166	7,270
Bernardo Heights Plaza [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Interest Rate	5.70%
Balance	$ 8,404	8,581
Santa Teresa Village [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Interest Rate	6.20%
Balance	$ 10,613	10,830
Diamond Hills Plaza [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Mortgage Notes Payable [Line Items]
Interest Rate	3.55%
Balance	$ 35,500	$ 0

Note 6 - Mortgage Notes Payab55

Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Combined Aggregate Principal Maturities of Mortgage Notes Payable - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Combined Aggregate Principal Maturities of Mortgage Notes Payable [Line Items]
2,016	$ 474
2,016	517
2,016	8,103
2,017	361
2,017	381
2,017	8,841
2,018	43
2,018	24
2,018	10,161
2,019	0
2,019	0
2,019	0
2,020	0
2,020	0
2,020	0
Thereafter	2,713
Thereafter	0
Thereafter	35,500
Total	3,591
Total	922	$ 2,716
Total	62,605	$ 94,183
Mortgage Notes Payable [Member]
Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Combined Aggregate Principal Maturities of Mortgage Notes Payable [Line Items]
2,016	7,112
2,017	8,099
2,018	10,094
2,019	0
2,020	0
Thereafter	32,787
Total	$ 58,092

Note 6 - Mortgage Notes Payab56

Note 6 - Mortgage Notes Payable, Credit Facilities and Senior Notes (Details) - Carrying Value of the Company’s Senior Notes - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 03, 2014	Dec. 09, 2013
Senior Notes 2024 [Member]
Debt Instrument [Line Items]
Principal amount	$ 250,000	$ 250,000	$ 250,000
Unamortized debt discount	(3,191)	(3,479)
Senior Notes	246,809	246,521
Senior Notes 2023 [Member]
Debt Instrument [Line Items]
Principal amount	250,000	250,000		$ 250,000
Unamortized debt discount	(3,482)	(3,826)
Senior Notes	$ 246,518	$ 246,174

Note 7 - Preferred Stock of R57

Note 7 - Preferred Stock of ROIC (Details) - shares	Dec. 31, 2015	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Preferred Stock, Shares Outstanding	0	0

Note 8 - Common Stock and War58

Note 8 - Common Stock and Warrants of ROIC (Details)	Aug. 10, 2015USD ($)shares	Oct. 23, 2014shares	Sep. 19, 2014	Feb. 04, 2013shares	Jun. 23, 2011$ / sharesshares	May. 31, 2010USD ($)	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014USD ($)$ / sharesshares	Dec. 31, 2013USD ($)shares	Jul. 31, 2013USD ($)
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Stock Issued During Period, Shares, New Issues	5,520,000
Proceeds from Issuance of Common Stock (in Dollars) | $	$ 87,400,000						$ 101,293,000	$ 214,906,000
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares							$ 0.0001	$ 0.0001
Payments of Stock Issuance Costs (in Dollars) | $							$ 4,739,000	$ 9,513,000	$ 69,000
Proceeds from Warrant Exercises (in Dollars) | $								$ 70,723,000	226,530,000
Warrant Repurchase Program, Authorized Amount (in Dollars) | $						$ 40,000,000
Warrants Repurchased During Period, Shares							0	0
Payments for Repurchase of Warrants (in Dollars) | $									$ 32,786,000
Stock Repurchase Program, Authorized Amount (in Dollars) | $										$ 50,000,000
Stock Repurchased During Period, Shares							0
2014 Sales Agreements ATM Program [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Stock Issued During Period, Shares, New Issues							544,567
Proceeds from Issuance of Common Stock (in Dollars) | $							$ 9,900,000
Number of Sales Agreements Entered Into			4
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares								$ 0.0001
Common Shares That May be Sold Under a Sales Agreement Aggregate Offering Price, Maximum								100,000,000
Payments of Stock Issuance Costs (in Dollars) | $							149,000
Open Market Transactions [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Warrants Repurchased During Period, Shares									744,850
Payments for Repurchase of Warrants (in Dollars) | $									$ 1,400,000
Privately Negotiated Transactions [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Warrants Repurchased During Period, Shares									15,834,000
Payments for Repurchase of Warrants (in Dollars) | $									$ 31,300,000
Minimum Price Company's Common Stock Must Trade Before Warrants Issued in The IPO Can Be Redeemed [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Share Price (in Dollars per share) | $ / shares					$ 18.75
Revolving Credit Facility [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) | $	$ 500,000,000						$ 500,000,000
Private Placement Warrants [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Warrants Purchased By Sponsor During IPO					8,000,000
Warrants, Sales Price Per Warrant (in Dollars per share) | $ / shares					$ 1
Sponsor Warrants Exercised				8,000,000
NRDC [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Stock Issued During Period, Shares, New Issues				688,500
Public Warrants [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Warrants, Repurchase Price Per Warrant (in Dollars per share) | $ / shares					$ 0.01
Number of Days Notice					30 days
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) | $ / shares					$ 12
Class Of Warrant Or Right Number Of Warrants Exercised								5,878,216	18,877,482
Proceeds from Warrant Exercises (in Dollars) | $								$ 70,500,000	$ 226,500,000
Class of Warrant or Right, Cancelled During Period		64,452
Public and Private Placement Warrants [Member]
Note 8 - Common Stock and Warrants of ROIC (Details) [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance					53,400,000

Note 9 - Stock Compensation a59

Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) [Line Items]
Allocated Share-based Compensation Expense	$ 4,700,000	$ 3,700,000	$ 2,900,000
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 31,000	25,000	20,000
The 2009 Plan [Member]
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum	7.50%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares (in Shares)	4,000,000
Vesting on January 1, 2016, 2017 and 2018 [Member]
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted Stock [Member]
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	343,070
Restricted Stock [Member] | The 2009 Plan [Member]
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	343,070
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 4,000,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 255 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 4,600,000	$ 2,900,000	$ 2,400,000
Performance Shares [Member] | Vesting on January 1, 2016, 2017 and 2018 [Member] | The 2009 Plan [Member]
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	117,275

Note 9 - Stock Compensation a60

Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) - Status of Non-vested Restricted Stock Awards - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Note 9 - Stock Compensation and Other Benefit Plans for ROIC (Details) - Status of Non-vested Restricted Stock Awards [Line Items]
Non-vested at December 31, 2014 | shares	559,358
Non-vested at December 31, 2014 | $ / shares	$ 11.51
Granted | shares	343,070
Granted | $ / shares	$ 15.58
Vested | shares	(272,125)
Vested | $ / shares	$ 12.10
Forfeited | shares	(2,832)
Forfeited | $ / shares	$ 15.88
Non-vested at December 31, 2015 | shares	627,471
Non-vested at December 31, 2015 | $ / shares	$ 14.39

Note 10 - Capital of the Oper61

Note 10 - Capital of the Operating Partnership (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Note 10 - Capital of the Operating Partnership (Details) [Line Items]
Limited Partners' Capital Account, Units Outstanding	111,726,637
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	89.00%
Common Stock, Shares, Outstanding	99,531,034	92,991,333
Minority Interest Decrease From Redemptions, Number of Units	174,959
ROIC common stock	174,959
OP Units [Member]
Note 10 - Capital of the Operating Partnership (Details) [Line Items]
Partners' Capital Account, Units	12,195,603
Non Controlling Interest Redemption Value (in Dollars)	$ 218.1
OP Units Classified as Permanent Equity [Member]
Note 10 - Capital of the Operating Partnership (Details) [Line Items]
Partners' Capital Account, Units	10,249,120
OP Units Classified as Mezzanine Equity [Member]
Note 10 - Capital of the Operating Partnership (Details) [Line Items]
Non Controlling Interests Redemption Value Price Per Share (in Dollars per share)	$ 17.30
OP Units Classifed as Permanent Equity [Member]
Note 10 - Capital of the Operating Partnership (Details) [Line Items]
Non Controlling Interests Redemption Value Price Per Share (in Dollars per share)	$ 17.99
Sternco Shopping Center [Member] | OP Units Classified as Mezzanine Equity [Member]
Note 10 - Capital of the Operating Partnership (Details) [Line Items]
Partners' Capital Account, Units	1,946,483

Note 11 - Fair Value of Finan62

Note 11 - Fair Value of Financial Instruments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)
Originated Mortgage Notes Payable [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Mortgage Loans on Real Estate, Interest Rate	4.50%
Minimum [Member] | Assumed Mortgage Notes Payable [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Mortgage Loans on Real Estate, Interest Rate	3.40%
Maximum [Member] | Assumed Mortgage Notes Payable [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Mortgage Loans on Real Estate, Interest Rate	3.80%
Weighted Average [Member] | Assumed Mortgage Notes Payable [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Mortgage Loans on Real Estate, Interest Rate	3.60%
Fair Value, Inputs, Level 2 [Member] | Senior Notes 2024 [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Long-term Debt, Fair Value	$ 238.5
Fair Value, Inputs, Level 2 [Member] | Senior Notes 2023 [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Long-term Debt, Fair Value	257.7
Fair Value, Inputs, Level 3 [Member] | Assumed Mortgage Notes Payable [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Notes Payable, Fair Value Disclosure	26.9
Fair Value, Inputs, Level 3 [Member] | Originated Mortgage Notes Payable [Member]
Note 11 - Fair Value of Financial Instruments (Details) [Line Items]
Notes Payable, Fair Value Disclosure	$ 32.8

Note 12 - Derivative and Hedg63

Note 12 - Derivative and Hedging Activities (Details) $ in Millions	Dec. 31, 2015USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	$ 2.1

Note 12 - Derivative and Hedg64

Note 12 - Derivative and Hedging Activities (Details) - Location of Gain or Loss on Interest Rate Derivatives Designated as Cash Flow Hedges - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Location of Gain or Loss on Interest Rate Derivatives Designated as Cash Flow Hedges [Abstract]
Amount of (loss) gain recognized in OCI on derivative		$ (3,132)	$ 4,565
Amount of loss reclassified from accumulated OCI into interest	$ 2,139	$ 3,219	4,621
Amount of gain recognized in income on derivative (ineffective portion and amount excluded from effectiveness testing)			$ 3

Note 13 - Commitments and Con65

Note 13 - Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 13 - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Rent Expense	$ 1.2	$ 1.2	$ 1.1
Terranomics Crossroads Associates, LP [Member]
Note 13 - Commitments and Contingencies (Details) [Line Items]
Equity Method Investment, Ownership Percentage			51.00%
Tax Protection Agreements, Period	12 years
SARM Five Points LLC [Member]
Note 13 - Commitments and Contingencies (Details) [Line Items]
Equity Method Investment, Ownership Percentage			100.00%
Wilsonville Town Center [Member]
Note 13 - Commitments and Contingencies (Details) [Line Items]
Tax Protection Agreements, Period		10 years

Note 13 - Commitments and Con66

Note 13 - Commitments and Contingencies (Details) - Future Minimum Annual Lease Payments Under Operating Leases $ in Thousands	Dec. 31, 2015USD ($)
Future Minimum Annual Lease Payments Under Operating Leases [Abstract]
2,016	$ 981
2,017	1,049
2,018	1,054
2,019	1,059
2,020	1,067
Thereafter	36,204
Total minimum lease payments	$ 41,414

Note 14 - Related Party Trans67

Note 14 - Related Party Transactions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Lease Agreements [Member] | General and Administrative Expense [Member]
Note 14 - Related Party Transactions (Details) [Line Items]
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	$ 42,000	$ 37,000	$ 25,000

Note 15 - Quarterly Results o68

Note 15 - Quarterly Results of Operations (Unaudited) (Details) - Quarterly Results of Operations for ROIC - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Results of Operations for ROIC [Abstract]
Total revenues	$ 51,285	$ 50,077	$ 46,215	$ 45,122	$ 41,743	$ 40,856	$ 36,915	$ 36,350	$ 192,699	$ 155,864	$ 111,232
Net income	7,468	7,837	5,411	4,376	4,752	6,981	6,051	3,266	25,092	21,050	33,978
Net income attributable to ROIC	$ 6,921	$ 7,542	$ 5,201	$ 4,200	$ 4,587	$ 6,748	$ 5,834	$ 3,132	$ 23,864	$ 20,301	$ 33,813
Basic income per share (in Dollars per share)	$ 0.07	$ 0.08	$ 0.05	$ 0.04	$ 0.05	$ 0.07	$ 0.08	$ 0.04	$ 0.25	$ 0.24	$ 0.50
Diluted income per share (in Dollars per share)	$ 0.07	$ 0.08	$ 0.05	$ 0.04	$ 0.05	$ 0.07	$ 0.07	$ 0.04	$ 0.25	$ 0.24	$ 0.48

Note 15 - Quarterly Results o69

Note 15 - Quarterly Results of Operations (Unaudited) (Details) - Quarterly Results of Operations for the Operating Partnership - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 15 - Quarterly Results of Operations (Unaudited) (Details) - Quarterly Results of Operations for the Operating Partnership [Line Items]
Total revenues	$ 51,285	$ 50,077	$ 46,215	$ 45,122	$ 41,743	$ 40,856	$ 36,915	$ 36,350	$ 192,699	$ 155,864	$ 111,232
Net income attributable to the Operating Partnership	$ 7,468	$ 7,837	$ 5,411	$ 4,376	$ 4,752	$ 6,981	$ 6,051	$ 3,266	$ 25,092	$ 21,050	$ 33,978
Basic income per unit	$ 0.07	$ 0.08	$ 0.05	$ 0.04	$ 0.05	$ 0.07	$ 0.08	$ 0.04	$ 0.25	$ 0.24	$ 0.50
Diluted income per unit	$ 0.07	$ 0.08	$ 0.05	$ 0.04	$ 0.05	$ 0.07	$ 0.07	$ 0.04	$ 0.25	$ 0.24	$ 0.48
Retail Opportunity Investments Partnership L.P. [Member]
Note 15 - Quarterly Results of Operations (Unaudited) (Details) - Quarterly Results of Operations for the Operating Partnership [Line Items]
Total revenues	$ 51,285	$ 50,077	$ 46,215	$ 45,122	$ 41,743	$ 40,856	$ 36,915	$ 36,350	$ 192,699	$ 155,864	$ 111,232
Net income attributable to the Operating Partnership	$ 7,468	$ 7,837	$ 5,411	$ 4,376	$ 4,752	$ 6,981	$ 6,051	$ 3,266	$ 25,092	$ 21,050	$ 33,978
Basic income per unit	$ 0.07	$ 0.08	$ 0.05	$ 0.04	$ 0.05	$ 0.07	$ 0.07	$ 0.04	$ 0.25	$ 0.24	$ 0.50
Diluted income per unit	$ 0.07	$ 0.08	$ 0.05	$ 0.04	$ 0.05	$ 0.07	$ 0.07	$ 0.04	$ 0.25	$ 0.24	$ 0.48

Note 16 - Subsequent Events (De

Note 16 - Subsequent Events (Details) - USD ($)	Feb. 23, 2016	Jan. 31, 2016	Jan. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jan. 15, 2016
Note 16 - Subsequent Events (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)				$ 0.68	$ 0.64	$ 0.60
Subsequent Event [Member]
Note 16 - Subsequent Events (Details) [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests			$ 1,828,825
OP Unit, Redemption Price Per Share (in Dollars per share)		$ 17.30	$ 17.30
Payments for OP Unit Redemption			$ 31,600,000
Number of Redeemable OP Units Converted to OP Units (in Shares)		117,658
Common Stock, Dividends, Per Share, Declared (in Dollars per share)	$ 0.18
Designated as Hedging Instrument [Member] | Subsequent Event [Member] | Interest Rate Swap [Member] | Bank of Montreal [Member]
Note 16 - Subsequent Events (Details) [Line Items]
Derivative, Notional Amount							$ 50,000,000
Designated as Hedging Instrument [Member] | Subsequent Event [Member] | Interest Rate Swap [Member] | Regions Bank [Member]
Note 16 - Subsequent Events (Details) [Line Items]
Derivative, Notional Amount							$ 50,000,000

Schedule III - Real Estate an71

Schedule III - Real Estate and Accumulated Depreciation (Details) $ in Billions	12 Months Ended
	Dec. 31, 2015USD ($)
Schedule III - Real Estate and Accumulated Depreciation (Details) [Line Items]
SEC Schedule III, Real Estate, Federal Income Tax Basis (in Dollars)	$ 2.1
Minimum [Member] | Building [Member]
Schedule III - Real Estate and Accumulated Depreciation (Details) [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Minimum [Member] | Building Improvements [Member]
Schedule III - Real Estate and Accumulated Depreciation (Details) [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] | Building [Member]
Schedule III - Real Estate and Accumulated Depreciation (Details) [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] | Building Improvements [Member]
Schedule III - Real Estate and Accumulated Depreciation (Details) [Line Items]
Property, Plant and Equipment, Useful Life	20 years

Schedule III - Real Estate an72

Schedule III - Real Estate and Accumulated Depreciation (Details) - Real Estate and Accumulated Depreciation - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate Properties [Line Items]
Encumbrances		$ 61,683
Initial Cost to Company, Land		668,855
Initial Cost to Company, Buildings & Improvements		1,541,563
Cost Capitalized Subsequent to Acquisition, Land		452
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		85,747
Amount at Which Carried at Close of Period. Land		669,307
Amount at Which Carried at Close of Period, Buildings & Improvements		1,627,310
Total		2,296,617	$ 1,785,898	$ 1,372,434	$ 871,694
Accumulated Depreciation	[1]	134,311
Paramount Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		6,347
Initial Cost to Company, Buildings & Improvements		10,274
Cost Capitalized Subsequent to Acquisition, Land		214
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,306
Amount at Which Carried at Close of Period. Land		6,561
Amount at Which Carried at Close of Period, Buildings & Improvements		11,580
Total		18,141
Accumulated Depreciation	[1]	$ 2,093
Date of Acquisition	[2]	Dec. 22, 2009
Santa Ana Downtown Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 7,895
Initial Cost to Company, Buildings & Improvements		9,890
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,018
Amount at Which Carried at Close of Period. Land		7,895
Amount at Which Carried at Close of Period, Buildings & Improvements		10,908
Total		18,803
Accumulated Depreciation	[1]	$ 1,989
Date of Acquisition	[2]	Jan. 26, 2010
Meridian Valley Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 1,881
Initial Cost to Company, Buildings & Improvements		4,795
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		555
Amount at Which Carried at Close of Period. Land		1,881
Amount at Which Carried at Close of Period, Buildings & Improvements		5,350
Total		7,231
Accumulated Depreciation	[1]	$ 964
Date of Acquisition	[2]	Feb. 1, 2010
The Market at Lake Stevens [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,087
Initial Cost to Company, Buildings & Improvements		12,397
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		313
Amount at Which Carried at Close of Period. Land		3,087
Amount at Which Carried at Close of Period, Buildings & Improvements		12,710
Total		15,797
Accumulated Depreciation	[1]	$ 2,216
Date of Acquisition	[2]	Mar. 16, 2010
Norwood Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,031
Initial Cost to Company, Buildings & Improvements		11,534
Cost Capitalized Subsequent to Acquisition, Land		122
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,086
Amount at Which Carried at Close of Period. Land		3,153
Amount at Which Carried at Close of Period, Buildings & Improvements		12,620
Total		15,773
Accumulated Depreciation	[1]	$ 2,101
Date of Acquisition	[2]	Apr. 5, 2010
Pleasant Hill Marketplace [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,359
Initial Cost to Company, Buildings & Improvements		6,927
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		741
Amount at Which Carried at Close of Period. Land		6,359
Amount at Which Carried at Close of Period, Buildings & Improvements		7,668
Total		14,027
Accumulated Depreciation	[1]	$ 1,538
Date of Acquisition	[2]	Apr. 8, 2010
Vancouver Market Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 4,080
Initial Cost to Company, Buildings & Improvements		6,912
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		735
Amount at Which Carried at Close of Period. Land		4,080
Amount at Which Carried at Close of Period, Buildings & Improvements		7,647
Total		11,727
Accumulated Depreciation	[1]	$ 1,183
Date of Acquisition	[2]	Jun. 17, 2010
Happy Valley Town Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 11,678
Initial Cost to Company, Buildings & Improvements		27,011
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,742
Amount at Which Carried at Close of Period. Land		11,678
Amount at Which Carried at Close of Period, Buildings & Improvements		28,753
Total		40,431
Accumulated Depreciation	[1]	$ 4,838
Date of Acquisition	[2]	Jul. 14, 2010
Cascade Summit [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 8,853
Initial Cost to Company, Buildings & Improvements		7,732
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		332
Amount at Which Carried at Close of Period. Land		8,853
Amount at Which Carried at Close of Period, Buildings & Improvements		8,064
Total		16,917
Accumulated Depreciation	[1]	$ 1,638
Date of Acquisition	[2]	Aug. 20, 2010
Heritage Market Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,595
Initial Cost to Company, Buildings & Improvements		17,399
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		408
Amount at Which Carried at Close of Period. Land		6,595
Amount at Which Carried at Close of Period, Buildings & Improvements		17,807
Total		24,402
Accumulated Depreciation	[1]	$ 2,928
Date of Acquisition	[2]	Sep. 23, 2010
Claremont Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land	[3]	$ 5,975
Initial Cost to Company, Buildings & Improvements	[3]	1,019
Cost Capitalized Subsequent to Acquisition, Land	[3]	183
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements	[3]	4,360
Amount at Which Carried at Close of Period. Land	[3]	6,158
Amount at Which Carried at Close of Period, Buildings & Improvements	[3]	5,379
Total	[3]	11,537
Accumulated Depreciation	[1],[3]	$ 1,580
Date of Acquisition	[2],[3]	Sep. 23, 2010
Shops at Sycamore Creek [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,747
Initial Cost to Company, Buildings & Improvements		11,584
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		880
Amount at Which Carried at Close of Period. Land		3,747
Amount at Which Carried at Close of Period, Buildings & Improvements		12,464
Total		16,211
Accumulated Depreciation	[1]	$ 2,520
Date of Acquisition	[2]	Sep. 30, 2010
Gateway Village [Member]
Real Estate Properties [Line Items]
Encumbrances		$ 7,166
Initial Cost to Company, Land		5,917
Initial Cost to Company, Buildings & Improvements		27,298
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		510
Amount at Which Carried at Close of Period. Land		5,917
Amount at Which Carried at Close of Period, Buildings & Improvements		27,808
Total		33,725
Accumulated Depreciation	[1]	$ 4,053
Date of Acquisition	[2]	Dec. 16, 2010
Division Crossing [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,706
Initial Cost to Company, Buildings & Improvements		8,327
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		5,713
Amount at Which Carried at Close of Period. Land		3,706
Amount at Which Carried at Close of Period, Buildings & Improvements		14,040
Total		17,746
Accumulated Depreciation	[1]	$ 1,967
Date of Acquisition	[2]	Dec. 22, 2010
Halsey Crossing [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land	[3]
Initial Cost to Company, Buildings & Improvements	[3]	$ 7,773
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements	[3]	$ 798
Amount at Which Carried at Close of Period. Land	[3]
Amount at Which Carried at Close of Period, Buildings & Improvements	[3]	$ 8,571
Total	[3]	8,571
Accumulated Depreciation	[1],[3]	$ 1,401
Date of Acquisition	[2],[3]	Dec. 22, 2010
Marketplace Del Rio [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 13,420
Initial Cost to Company, Buildings & Improvements		22,251
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,681
Amount at Which Carried at Close of Period. Land		13,420
Amount at Which Carried at Close of Period, Buildings & Improvements		23,932
Total		37,352
Accumulated Depreciation	[1]	$ 3,774
Date of Acquisition	[2]	Jan. 3, 2011
Pinole Vista [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 12,894
Initial Cost to Company, Buildings & Improvements		30,670
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		2,134
Amount at Which Carried at Close of Period. Land		12,894
Amount at Which Carried at Close of Period, Buildings & Improvements		32,804
Total		45,698
Accumulated Depreciation	[1]	$ 3,645
Date of Acquisition	[2]	Jan. 6, 2011
Desert Spring Marketplace [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 8,517
Initial Cost to Company, Buildings & Improvements		18,761
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,513
Amount at Which Carried at Close of Period. Land		8,357
Amount at Which Carried at Close of Period, Buildings & Improvements		20,274
Total		28,631
Accumulated Depreciation	[1]	$ 3,327
Date of Acquisition	[2]	Feb. 17, 2011
Capitalized Cost Subsequent to Acquisition, Land		$ (160)
Mills Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		4,084
Initial Cost to Company, Buildings & Improvements		16,833
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		6,570
Amount at Which Carried at Close of Period. Land		4,084
Amount at Which Carried at Close of Period, Buildings & Improvements		23,403
Total		27,487
Accumulated Depreciation	[1]	$ 3,675
Date of Acquisition	[2]	Feb. 17, 2011
Morada Ranch [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 2,504
Initial Cost to Company, Buildings & Improvements		19,547
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		509
Amount at Which Carried at Close of Period. Land		2,504
Amount at Which Carried at Close of Period, Buildings & Improvements		20,056
Total		22,560
Accumulated Depreciation	[1]	$ 3,007
Date of Acquisition	[2]	May 20, 2011
Renaissance [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 8,640
Initial Cost to Company, Buildings & Improvements		13,848
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		441
Amount at Which Carried at Close of Period. Land		8,640
Amount at Which Carried at Close of Period, Buildings & Improvements		14,289
Total		22,929
Accumulated Depreciation	[1]	$ 1,947
Date of Acquisition	[2]	Aug. 3, 2011
Country Club Gate [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,487
Initial Cost to Company, Buildings & Improvements		17,341
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,000
Amount at Which Carried at Close of Period. Land		6,487
Amount at Which Carried at Close of Period, Buildings & Improvements		18,341
Total		24,828
Accumulated Depreciation	[1]	$ 2,672
Date of Acquisition	[2]	Jul. 8, 2011
Canyon Park [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,352
Initial Cost to Company, Buildings & Improvements		15,916
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		3,215
Amount at Which Carried at Close of Period. Land		9,352
Amount at Which Carried at Close of Period, Buildings & Improvements		19,131
Total		28,483
Accumulated Depreciation	[1]	$ 2,281
Date of Acquisition	[2]	Jul. 29, 2011
Hawks Prairie [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 5,334
Initial Cost to Company, Buildings & Improvements		20,694
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		436
Amount at Which Carried at Close of Period. Land		5,334
Amount at Which Carried at Close of Period, Buildings & Improvements		21,130
Total		26,464
Accumulated Depreciation	[1]	$ 2,797
Date of Acquisition	[2]	Sep. 8, 2011
Kress Building [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 5,693
Initial Cost to Company, Buildings & Improvements		20,866
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		4,672
Amount at Which Carried at Close of Period. Land		5,693
Amount at Which Carried at Close of Period, Buildings & Improvements		25,538
Total		31,231
Accumulated Depreciation	[1]	$ 3,351
Date of Acquisition	[2]	Sep. 30, 2011
Round Hill Square [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,358
Initial Cost to Company, Buildings & Improvements		17,734
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		950
Amount at Which Carried at Close of Period. Land		6,358
Amount at Which Carried at Close of Period, Buildings & Improvements		18,684
Total		25,042
Accumulated Depreciation	[1]	$ 2,681
Date of Acquisition	[2]	Aug. 23, 2011
Hillsboro [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land	[3]
Initial Cost to Company, Buildings & Improvements	[3]	$ 18,055
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements	[3]	$ 587
Amount at Which Carried at Close of Period. Land	[3]
Amount at Which Carried at Close of Period, Buildings & Improvements	[3]	$ 18,642
Total	[3]	18,642
Accumulated Depreciation	[1],[3]	$ 2,486
Date of Acquisition	[2],[3]	Nov. 23, 2011
Gateway Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land	[3]	$ 6,242
Initial Cost to Company, Buildings & Improvements	[3]	23,462
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements	[3]	30
Amount at Which Carried at Close of Period. Land	[3]	6,242
Amount at Which Carried at Close of Period, Buildings & Improvements	[3]	23,492
Total	[3]	29,734
Accumulated Depreciation	[1],[3]	$ 2,732
Date of Acquisition	[2],[3]	Feb. 16, 2012
Euclid Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 7,407
Initial Cost to Company, Buildings & Improvements		7,753
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		2,859
Amount at Which Carried at Close of Period. Land		7,407
Amount at Which Carried at Close of Period, Buildings & Improvements		10,612
Total		18,019
Accumulated Depreciation	[1]	$ 1,527
Date of Acquisition	[2]	Mar. 28, 2012
Green Valley [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 1,685
Initial Cost to Company, Buildings & Improvements		8,999
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		414
Amount at Which Carried at Close of Period. Land		1,685
Amount at Which Carried at Close of Period, Buildings & Improvements		9,413
Total		11,098
Accumulated Depreciation	[1]	$ 1,282
Date of Acquisition	[2]	Apr. 2, 2012
Aurora Square [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,002
Initial Cost to Company, Buildings & Improvements		1,693
Amount at Which Carried at Close of Period. Land		3,002
Amount at Which Carried at Close of Period, Buildings & Improvements		1,665
Total		4,667
Accumulated Depreciation	[1]	$ 324
Date of Acquisition	[2]	May 3, 2012
Capitalized Cost Subsequent to Acquisition, Buildings & Improvements		$ (28)
Marlin Cove [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		8,815
Initial Cost to Company, Buildings & Improvements		6,797
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,384
Amount at Which Carried at Close of Period. Land		8,815
Amount at Which Carried at Close of Period, Buildings & Improvements		8,181
Total		16,996
Accumulated Depreciation	[1]	$ 1,160
Date of Acquisition	[2]	May 4, 2012
Seabridge [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 5,098
Initial Cost to Company, Buildings & Improvements		17,164
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		658
Amount at Which Carried at Close of Period. Land		5,098
Amount at Which Carried at Close of Period, Buildings & Improvements		17,822
Total		22,920
Accumulated Depreciation	[1]	$ 2,257
Date of Acquisition	[2]	May 31, 2012
Novato [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 5,329
Initial Cost to Company, Buildings & Improvements		4,412
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		937
Amount at Which Carried at Close of Period. Land		5,329
Amount at Which Carried at Close of Period, Buildings & Improvements		5,349
Total		10,678
Accumulated Depreciation	[1]	$ 527
Date of Acquisition	[2]	Jul. 24, 2012
Glendora [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 5,847
Initial Cost to Company, Buildings & Improvements		8,758
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		164
Amount at Which Carried at Close of Period. Land		5,847
Amount at Which Carried at Close of Period, Buildings & Improvements		8,922
Total		14,769
Accumulated Depreciation	[1]	$ 1,139
Date of Acquisition	[2]	Aug. 1, 2012
Wilsonville [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 4,181
Initial Cost to Company, Buildings & Improvements		15,394
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		249
Amount at Which Carried at Close of Period. Land		4,181
Amount at Which Carried at Close of Period, Buildings & Improvements		15,643
Total		19,824
Accumulated Depreciation	[1]	$ 1,703
Date of Acquisition	[2]	Aug. 1, 2012
Bay Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 5,454
Initial Cost to Company, Buildings & Improvements		14,857
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,274
Amount at Which Carried at Close of Period. Land		5,454
Amount at Which Carried at Close of Period, Buildings & Improvements		16,131
Total		21,585
Accumulated Depreciation	[1]	$ 1,748
Date of Acquisition	[2]	Oct. 5, 2012
Santa Theresa [Member]
Real Estate Properties [Line Items]
Encumbrances		$ 10,613
Initial Cost to Company, Land		14,965
Initial Cost to Company, Buildings & Improvements		17,162
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		2,954
Amount at Which Carried at Close of Period. Land		14,965
Amount at Which Carried at Close of Period, Buildings & Improvements		20,116
Total		35,081
Accumulated Depreciation	[1]	$ 2,202
Date of Acquisition	[2]	Nov. 8, 2012
Cypress West [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 15,480
Initial Cost to Company, Buildings & Improvements		11,819
Cost Capitalized Subsequent to Acquisition, Land		5
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,966
Amount at Which Carried at Close of Period. Land		15,485
Amount at Which Carried at Close of Period, Buildings & Improvements		13,785
Total		29,270
Accumulated Depreciation	[1]	$ 1,480
Date of Acquisition	[2]	Dec. 7, 2012
Redondo Beach [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 16,242
Initial Cost to Company, Buildings & Improvements		13,625
Cost Capitalized Subsequent to Acquisition, Land		5
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		16
Amount at Which Carried at Close of Period. Land		16,247
Amount at Which Carried at Close of Period, Buildings & Improvements		13,641
Total		29,888
Accumulated Depreciation	[1]	$ 1,326
Date of Acquisition	[2]	Dec. 28, 2012
Harbor Place [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 16,506
Initial Cost to Company, Buildings & Improvements		10,527
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		324
Amount at Which Carried at Close of Period. Land		16,506
Amount at Which Carried at Close of Period, Buildings & Improvements		10,851
Total		27,357
Accumulated Depreciation	[1]	$ 977
Date of Acquisition	[2]	Dec. 28, 2012
Diamond Bar Town Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,540
Initial Cost to Company, Buildings & Improvements		16,795
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		3,608
Amount at Which Carried at Close of Period. Land		9,540
Amount at Which Carried at Close of Period, Buildings & Improvements		20,403
Total		29,943
Accumulated Depreciation	[1]	$ 2,019
Date of Acquisition	[2]	Feb. 1, 2013
Bernardo Heights [Member]
Real Estate Properties [Line Items]
Encumbrances		$ 8,404
Initial Cost to Company, Land		3,192
Initial Cost to Company, Buildings & Improvements		8,940
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		720
Amount at Which Carried at Close of Period. Land		3,192
Amount at Which Carried at Close of Period, Buildings & Improvements		9,660
Total		12,852
Accumulated Depreciation	[1]	$ 849
Date of Acquisition	[2]	Feb. 6, 2013
Canyon Crossing [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 7,941
Initial Cost to Company, Buildings & Improvements		24,659
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		2,649
Amount at Which Carried at Close of Period. Land		7,941
Amount at Which Carried at Close of Period, Buildings & Improvements		27,308
Total		35,249
Accumulated Depreciation	[1]	$ 2,529
Date of Acquisition	[2]	Apr. 15, 2013
Diamond Hills [Member]
Real Estate Properties [Line Items]
Encumbrances		$ 35,500
Initial Cost to Company, Land		15,458
Initial Cost to Company, Buildings & Improvements		29,353
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		383
Amount at Which Carried at Close of Period. Land		15,458
Amount at Which Carried at Close of Period, Buildings & Improvements		29,736
Total		45,194
Accumulated Depreciation	[1]	$ 2,701
Date of Acquisition	[2]	Apr. 22, 2013
Granada Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,673
Initial Cost to Company, Buildings & Improvements		13,459
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		387
Amount at Which Carried at Close of Period. Land		3,673
Amount at Which Carried at Close of Period, Buildings & Improvements		13,846
Total		17,519
Accumulated Depreciation	[1]	$ 1,161
Date of Acquisition	[2]	Jun. 27, 2013
Hawthorne Crossings [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 10,383
Initial Cost to Company, Buildings & Improvements		29,277
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		554
Amount at Which Carried at Close of Period. Land		10,383
Amount at Which Carried at Close of Period, Buildings & Improvements		29,831
Total		40,214
Accumulated Depreciation	[1]	$ 2,399
Date of Acquisition	[2]	Jun. 27, 2013
Robinwood [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 3,997
Initial Cost to Company, Buildings & Improvements		11,317
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		518
Amount at Which Carried at Close of Period. Land		3,997
Amount at Which Carried at Close of Period, Buildings & Improvements		11,835
Total		15,832
Accumulated Depreciation	[1]	$ 938
Date of Acquisition	[2]	Aug. 23, 2013
Five Points Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 18,420
Initial Cost to Company, Buildings & Improvements		36,965
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		2,600
Amount at Which Carried at Close of Period. Land		18,420
Amount at Which Carried at Close of Period, Buildings & Improvements		39,565
Total		57,985
Accumulated Depreciation	[1]	$ 2,456
Date of Acquisition	[2]	Sep. 27, 2013
Crossroads Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 68,366
Initial Cost to Company, Buildings & Improvements		67,756
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		6,524
Amount at Which Carried at Close of Period. Land		68,366
Amount at Which Carried at Close of Period, Buildings & Improvements		74,280
Total		142,646
Accumulated Depreciation	[1]	$ 5,674
Date of Acquisition	[2]	Sep. 27, 2013
Peninsula Marketplace [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 14,730
Initial Cost to Company, Buildings & Improvements		19,214
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		49
Amount at Which Carried at Close of Period. Land		14,730
Amount at Which Carried at Close of Period, Buildings & Improvements		19,263
Total		33,993
Accumulated Depreciation	[1]	$ 1,341
Date of Acquisition	[2]	Nov. 1, 2013
Country Club Village [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,986
Initial Cost to Company, Buildings & Improvements		26,579
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,603
Amount at Which Carried at Close of Period. Land		9,986
Amount at Which Carried at Close of Period, Buildings & Improvements		28,182
Total		38,168
Accumulated Depreciation	[1]	$ 2,067
Date of Acquisition	[2]	Nov. 26, 2013
Plaza de la Canada [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 10,351
Initial Cost to Company, Buildings & Improvements		24,819
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		331
Amount at Which Carried at Close of Period. Land		10,351
Amount at Which Carried at Close of Period, Buildings & Improvements		25,150
Total		35,501
Accumulated Depreciation	[1]	$ 1,556
Date of Acquisition	[2]	Dec. 13, 2013
Tigard Marketplace [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 13,587
Initial Cost to Company, Buildings & Improvements		9,603
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		390
Amount at Which Carried at Close of Period. Land		13,587
Amount at Which Carried at Close of Period, Buildings & Improvements		9,993
Total		23,580
Accumulated Depreciation	[1]	$ 797
Date of Acquisition	[2]	Feb. 18, 2014
Creekside Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 14,807
Initial Cost to Company, Buildings & Improvements		29,476
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		122
Amount at Which Carried at Close of Period. Land		14,807
Amount at Which Carried at Close of Period, Buildings & Improvements		29,598
Total		44,405
Accumulated Depreciation	[1]	$ 1,945
Date of Acquisition	[2]	Feb. 28, 2014
North Park Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 13,593
Initial Cost to Company, Buildings & Improvements		17,733
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		6
Amount at Which Carried at Close of Period. Land		13,593
Amount at Which Carried at Close of Period, Buildings & Improvements		17,739
Total		31,332
Accumulated Depreciation	[1]	$ 884
Date of Acquisition	[2]	Apr. 30, 2014
Aurora Square II [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,862
Initial Cost to Company, Buildings & Improvements		9,798
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		31
Amount at Which Carried at Close of Period. Land		6,862
Amount at Which Carried at Close of Period, Buildings & Improvements		9,829
Total		16,691
Accumulated Depreciation	[1]	$ 609
Date of Acquisition	[2]	May 22, 2014
Fallbrook Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land	[3]	$ 21,232
Initial Cost to Company, Buildings & Improvements	[3]	186,197
Cost Capitalized Subsequent to Acquisition, Land	[3]	83
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements	[3]	3,556
Amount at Which Carried at Close of Period. Land	[3]	21,315
Amount at Which Carried at Close of Period, Buildings & Improvements	[3]	189,753
Total	[3]	211,068
Accumulated Depreciation	[1],[3]	$ 9,043
Date of Acquisition	[2],[3]	Jun. 13, 2014
Moorpark Town Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 7,063
Initial Cost to Company, Buildings & Improvements		19,694
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,096
Amount at Which Carried at Close of Period. Land		7,063
Amount at Which Carried at Close of Period, Buildings & Improvements		20,790
Total		27,853
Accumulated Depreciation	[1]	$ 798
Date of Acquisition	[2]	Dec. 4, 2014
Mission Foothill Marketplace [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 11,415
Initial Cost to Company, Buildings & Improvements		17,783
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		207
Amount at Which Carried at Close of Period. Land		11,415
Amount at Which Carried at Close of Period, Buildings & Improvements		17,990
Total		29,405
Accumulated Depreciation	[1]	$ 672
Date of Acquisition	[2]	Dec. 4, 2014
Wilsonville Town Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 10,334
Initial Cost to Company, Buildings & Improvements		27,101
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		81
Amount at Which Carried at Close of Period. Land		10,334
Amount at Which Carried at Close of Period, Buildings & Improvements		27,182
Total		37,516
Accumulated Depreciation	[1]	$ 1,059
Date of Acquisition	[2]	Dec. 11, 2014
Ontario Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,825
Initial Cost to Company, Buildings & Improvements		26,635
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		35
Amount at Which Carried at Close of Period. Land		9,825
Amount at Which Carried at Close of Period, Buildings & Improvements		26,670
Total		36,495
Accumulated Depreciation	[1]	$ 893
Date of Acquisition	[2]	Jan. 6, 2015
Winston Manor Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 10,018
Initial Cost to Company, Buildings & Improvements		9,762
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		1,729
Amount at Which Carried at Close of Period. Land		10,018
Amount at Which Carried at Close of Period, Buildings & Improvements		11,491
Total		21,509
Accumulated Depreciation	[1]	$ 336
Date of Acquisition	[2]	Jan. 7, 2015
Jackson Square [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,886
Initial Cost to Company, Buildings & Improvements		24,558
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		234
Amount at Which Carried at Close of Period. Land		6,886
Amount at Which Carried at Close of Period, Buildings & Improvements		24,792
Total		31,678
Accumulated Depreciation	[1]	$ 389
Date of Acquisition	[2]	Jul. 1, 2015
Tigard Promenade [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,844
Initial Cost to Company, Buildings & Improvements		10,843
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		7
Amount at Which Carried at Close of Period. Land		9,844
Amount at Which Carried at Close of Period, Buildings & Improvements		10,850
Total		20,694
Accumulated Depreciation	[1]	$ 163
Date of Acquisition	[2]	Jul. 28, 2015
Sunnyside Village Square [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 4,428
Initial Cost to Company, Buildings & Improvements		13,324
Amount at Which Carried at Close of Period. Land		4,428
Amount at Which Carried at Close of Period, Buildings & Improvements		13,324
Total		17,752
Accumulated Depreciation	[1]	$ 192
Date of Acquisition	[2]	Jul. 28, 2015
Gateway Centre [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 16,275
Initial Cost to Company, Buildings & Improvements		28,308
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		40
Amount at Which Carried at Close of Period. Land		16,275
Amount at Which Carried at Close of Period, Buildings & Improvements		28,348
Total		44,623
Accumulated Depreciation	[1]	$ 301
Date of Acquisition	[2]	Sep. 1, 2015
Johnson Creek [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 6,290
Initial Cost to Company, Buildings & Improvements		25,160
Cost Capitalized Subsequent to Acquisition, Buildings & Improvements		374
Amount at Which Carried at Close of Period. Land		6,290
Amount at Which Carried at Close of Period, Buildings & Improvements		25,534
Total		31,824
Accumulated Depreciation	[1]	$ 108
Date of Acquisition	[2]	Nov. 9, 2015
Iron Horse Plaza [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,111
Initial Cost to Company, Buildings & Improvements		36,444
Amount at Which Carried at Close of Period. Land		9,111
Amount at Which Carried at Close of Period, Buildings & Improvements		36,444
Total		45,555
Accumulated Depreciation	[1]	$ 78
Date of Acquisition	[2]	Dec. 4, 2015
Sternco Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 9,889
Initial Cost to Company, Buildings & Improvements		39,558
Amount at Which Carried at Close of Period. Land		9,889
Amount at Which Carried at Close of Period, Buildings & Improvements		39,558
Total		49,447
Accumulated Depreciation	[1]	$ 86
Date of Acquisition	[2]	Dec. 10, 2015
Four Corner Square [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 8,368
Initial Cost to Company, Buildings & Improvements		33,470
Amount at Which Carried at Close of Period. Land		8,368
Amount at Which Carried at Close of Period, Buildings & Improvements		33,470
Total		41,838
Accumulated Depreciation	[1]	$ 72
Date of Acquisition	[2]	Dec. 21, 2015
Warner Plaza Shopping Center [Member]
Real Estate Properties [Line Items]
Initial Cost to Company, Land		$ 15,777
Initial Cost to Company, Buildings & Improvements		63,109
Amount at Which Carried at Close of Period. Land		15,777
Amount at Which Carried at Close of Period, Buildings & Improvements		63,109
Total		$ 78,886
Date of Acquisition	[2]	Dec. 31, 2015
[1]	Depreciation and investments in building and improvements reflected in the consolidated statement of operations is calculated over the estimated useful life of the assets as follows:Building: 39-40 yearsProperty Improvements: 10-20 years
[2]	The aggregate cost for Federal Income Tax Purposes for real estate was approximately $2.1 billion at December 31, 2015.
[3]	Property is subject to a ground lease.

Schedule III - Real Estate an73

Schedule III - Real Estate and Accumulated Depreciation (Details) - Reconciliation of Real Estate - Owned Subject to Operating Leases - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Real Estate - Owned Subject to Operating Leases [Abstract]
Balance	$ 1,785,898	$ 1,372,434	$ 871,694
Property improvements during the year	28,104	27,515	19,514
Properties acquired during the year	485,853	416,298	487,309
Properties sold during the year		(23,676)	(6,083)
Assets written off during the year	(3,238)	(6,673)
Balance	$ 2,296,617	$ 1,785,898	$ 1,372,434

Schedule III - Real Estate an74

Schedule III - Real Estate and Accumulated Depreciation (Details) - Reconciliation of Accumulated Depreciation - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Accumulated Depreciation [Abstract]
Balance	$ 88,173	$ 57,500	$ 32,365
Depreciation expenses	49,619	38,890	25,653
Properties sold during the year		(2,081)	(433)
Property assets fully depreciated and written off	(3,481)	(6,136)	(85)
Balance	$ 134,311	$ 88,173	$ 57,500

Schedule IV - Mortgage Loans 75

Schedule IV - Mortgage Loans on Real Estate (Details) - Reconciliation of Mortgage Loans on Real Estate - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule IV - Mortgage Loans on Real Estate (Details) - Reconciliation of Mortgage Loans on Real Estate [Line Items]
Balance	$ 0	$ 0	$ 10,000
Balance	0	0	0
Eliminations from Consolidation of Joint Ventures [Member]
Schedule IV - Mortgage Loans on Real Estate (Details) - Reconciliation of Mortgage Loans on Real Estate [Line Items]
Mortgage loans eliminated upon consolidation of joint venture	$ 0	$ 0	$ (10,000)