InvenTrust Properties (IVT) 10-Q 6 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 01, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	InvenTrust Properties Corp.
Entity Central Index Key	1,307,748
Entity Filer Category	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		727,895,082
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investment properties
Land	$ 586,710	$ 628,487
Building and other improvements	1,744,864	1,887,598
Construction in progress	7,543	4,975
Total	2,339,117	2,521,060
Less accumulated depreciation	(306,123)	(348,337)
Net investment properties	2,032,994	2,172,723
Cash and cash equivalents	157,351	162,747
Restricted cash	28,035	9,131
Investment in marketable securities	1,385	4,758
Investment in unconsolidated entities	188,135	180,764
Intangible assets, net	106,862	115,411
Accounts and rents receivable (net of allowance of $1,743 and $1,266)	28,064	30,522
Deferred costs and other assets, net	21,010	22,548
Total assets	2,563,836	2,698,604
Liabilities
Debt, net	589,994	667,861
Accounts payable and accrued expenses	45,809	37,798
Distributions payable	13,030	13,441
Intangible liabilities, net	48,952	53,532
Other liabilities	18,778	20,250
Total liabilities	716,563	792,882
Commitments and contingencies
Stockholders' Equity
Preferred stock, $.001 par value, 40,000,000 shares authorized, none outstanding	0	0
Common stock, $.001 par value, 1,460,000,000 shares authorized, 727,949,198 shares issued and outstanding as of September 30, 2018 and 774,293,197 shares issued and outstanding as of December 31, 2017, respectively	728	773
Additional paid-in capital	5,584,538	5,681,912
Distributions in excess of accumulated net income	(3,740,288)	(3,778,908)
Accumulated comprehensive income	2,295	1,945
Total stockholders' equity	1,847,273	1,905,722
Total liabilities and stockholders' equity	$ 2,563,836	$ 2,698,604

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Accounts and rents receivable, allowance	$ 1,743	$ 1,266
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	40,000,000	40,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,460,000,000	1,460,000,000
Common stock, shares issued (in shares)	727,949,198	774,293,197
Common stock, shares outstanding (in shares)	727,949,198	774,293,197

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income
Rental income	$ 44,297	$ 46,808	$ 135,893	$ 140,146
Total income	60,493	62,851	186,183	187,290
Expenses
General and administrative expenses	9,628	11,051	26,617	33,484
Property operating expenses	8,615	9,200	26,629	25,654
Real estate taxes	8,712	9,874	27,742	27,041
Depreciation and amortization	29,684	23,941	77,768	69,815
Provision for asset impairment	2,713	0	3,510	16,440
Total expenses	59,352	54,066	162,266	172,434
Operating income	1,141	8,785	23,917	14,856
Interest and dividend income	340	938	1,489	3,853
Gain on sale of investment properties, net	13,476	7,253	51,741	21,634
(Loss) gain on extinguishment of debt, net	(4)	(42)	10,693	840
Other income (expense)	21	2,611	515	(671)
Interest expense	(5,954)	(7,588)	(19,047)	(22,795)
Equity in (losses) earnings of unconsolidated entities	(43)	648	(2,795)	1,895
Realized and unrealized investment gains, net	13	71	236	30,940
Income from continuing operations before income taxes	8,990	12,676	66,749	50,552
Income tax expense	(43)	(432)	(407)	(943)
Net income from continuing operations	8,947	12,244	66,342	49,609
Net income from discontinued operations	0	9,721	0	8,372
Net income	$ 8,947	$ 21,965	$ 66,342	$ 57,981
Weighted average number of common shares outstanding, basic and diluted (in shares)	768,385,770	773,517,492	772,341,263	773,405,710
Net income per common share, from continuing operations, basic and diluted (in dollars per share)	$ 0.01	$ 0.02	$ 0.09	$ 0.06
Net income per common share, from discontinued operations, basic and diluted (in dollars per share)	0	0.01	0	0.01
Net income per common share, basic and diluted (in dollars per share)	0.01	0.03	0.09	0.07
Distributions declared per common share outstanding (in dollars per share)	0.01	0.02	0.05	0.05
Distributions paid per common share outstanding (in dollars per share)	$ 0.01	$ 0.02	$ 0.05	$ 0.05
Comprehensive income
Net income	$ 8,947	$ 21,965	$ 66,342	$ 57,981
Unrealized gain (loss) on investment securities	0	4,257	0	(13,407)
Unrealized gain on derivatives	142	111	1,218	426
Reclassification for amounts recognized in net income	(284)	(71)	(593)	(30,940)
Comprehensive income	8,805	26,262	66,967	14,060
Tenant recovery income
Income
Income	13,614	14,704	44,390	42,523
Other property income
Income
Income	1,617	321	2,935	1,409
Other fee income
Income
Income	$ 965	$ 1,018	$ 2,965	$ 3,212

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands		Total	Previously Reported	Restatement Adjustment	Common Stock	Common StockPreviously Reported	Additional Paid-in Capital	Additional Paid-in CapitalPreviously Reported	Distributions in excess of accumulated net income	Distributions in excess of accumulated net incomePreviously Reported	Distributions in excess of accumulated net incomeRestatement Adjustment		Accumulated Comprehensive Income	Accumulated Comprehensive IncomePreviously Reported	Accumulated Comprehensive IncomeRestatement Adjustment
Balance at the beginning (in shares) at Dec. 31, 2016					773,304,997
Balance at the beginning, value at Dec. 31, 2016		$ 1,949,528			$ 773		$ 5,676,639		$ (3,786,943)				$ 59,059
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		57,981							57,981
Unrealized gain (loss) on investment securities		(13,407)											(13,407)
Unrealized gain on derivatives		426											426
Reclassification for amounts recognized in net income		(30,940)											(30,940)
Distributions declared		(40,316)							(40,316)
Share-based compensation, net (in shares)					215,544
Stock-based compensation, net		2,686					2,686
Refund of excess funds associated with 2016 tender offer		1,929					1,929
Balance at the end (in shares) at Sep. 30, 2017					773,520,541
Balance at the end, value at Sep. 30, 2017		1,927,887			$ 773		5,681,254		(3,769,278)				15,138
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment to retained earnings | ASU No. 2016-01	[1]										$ 275				$ (275)
Adjustment to retained earnings | ASU No. 2017-05				$ 12,756					12,756		$ 12,756	[1]
Balance at the beginning (in shares) at Dec. 31, 2017					774,293,197	774,293,197
Balance at the beginning, value at Dec. 31, 2017		1,918,478	$ 1,905,722		$ 773	$ 773	5,681,912	$ 5,681,912	(3,765,877)	$ (3,778,908)			1,670	$ 1,945
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		66,342							66,342
Unrealized gain (loss) on investment securities		0
Unrealized gain on derivatives		1,218											1,218
Reclassification for amounts recognized in net income		(593)											(593)
Distributions declared		(40,753)							(40,753)
Share-based compensation, net (in shares)					159,540
Stock-based compensation, net		1,812					1,812
Repurchase of common stock (in shares)					(46,503,539)
Repurchase of common stock		(99,231)			$ (45)		(99,186)
Balance at the end (in shares) at Sep. 30, 2018					727,949,198
Balance at the end, value at Sep. 30, 2018		$ 1,847,273			$ 728		$ 5,584,538		$ (3,740,288)				$ 2,295
[1]	See Note 2. Recently Issued Accounting Pronouncements Adopted.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 66,342	$ 57,981
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	77,906	71,096
Amortization of above and below-market leases, net	(3,990)	(4,638)
Amortization of debt premiums, discounts and financing costs	797	947
Straight-line rental income	(3,237)	(1,418)
Provision for asset impairment	3,510	16,440
Gain on sale of investment properties, net	(51,741)	(31,749)
Gain on extinguishment of debt, net	(10,693)	(838)
Equity in losses (earnings) of unconsolidated entities	2,795	(1,895)
Distributions from unconsolidated entities	5,069	351
Realized and unrealized investment gains, net	(236)	(30,940)
Non-cash stock-based compensation, net	3,187	4,007
Changes in assets and liabilities:
Accounts and rents receivable, net	400	1,682
Deferred costs and other assets	3,742	6,326
Accounts payable and accrued expenses	7,862	3,988
Other liabilities	(22)	3,546
Net cash provided by operating activities	101,691	94,886
Cash flows from investing activities:
Purchase of investment properties	(149,781)	(517,061)
Acquired in-place and market lease intangibles, net	(8,935)	(50,207)
Capital expenditures and tenant improvements	(17,636)	(20,278)
Investment in development projects	(2,028)	0
Proceeds from sale and transfer of investment properties, net	254,424	197,843
Proceeds from sale of marketable securities, net	3,609	140,171
Contributions to unconsolidated entities	(2,761)	(6,109)
Distributions from unconsolidated entities	282	1,285
Lease commissions and other leasing costs	(5,353)	(2,201)
Other assets	(89)	998
Other liabilities	(330)	(1,124)
Net cash provided by (used in) investing activities	71,402	(256,683)
Cash flows from financing activities:
Shares repurchased	(98,666)	0
Distributions	(41,164)	(39,917)
Refund received of excess funds associated with 2016 tender offer	0	1,929
Proceeds from debt	52,000	0
Pay-offs of debt	(68,096)	(104,032)
Principal payments of mortgage debt	(1,617)	0
Principal payments of mortgage debt	(1,423)	(1,022)
Payment of loan fees and deposits	(619)	(343)
Net cash used in financing activities	(159,585)	(143,385)
Net increase (decrease) in cash, cash equivalents, and restricted cash	13,508	(305,182)
Cash, cash equivalents, and restricted cash at beginning of period	171,878	417,325
Cash, cash equivalents, and restricted cash at end of period	185,386	112,143
Reconciliation of cash, cash equivalents, and restricted cash to condensed consolidated balance sheets:
Cash and cash equivalents	157,351	102,810
Restricted cash	28,035	9,333
Cash, cash equivalents, and restricted cash at end of period	185,386	112,143
Cash flow disclosure, including non-cash activities:
Cash paid for interest	18,504	23,973
Cash paid for income taxes, net of refunds of $138 and $509	1,040	684
Distributions payable	13,030	13,440
Recognition of partially deferred gains on property sales	12,756	0
Accrued capital expenditures and tenant improvements	5,207	1,706
Accrued investment in re-development projects	362	0
Accrued lease commissions and other leasing costs	410	218
Accrued common stock repurchase costs	565	0
Purchase of investment properties:
Net investment properties	150,477	570,403
Accounts receivable, lease intangibles, and deferred costs and other assets	14,121	69,214
Accounts payable, accrued expenses, lease intangibles, and other liabilities	(5,882)	(30,632)
Assumption of mortgage debt upon acquisition of investment property	0	(41,717)
Cash outflow for purchase of investment properties	158,716	567,268
Assumption of mortgage principal	0	41,000
Capitalized acquisition costs	(260)	(1,692)
Construction escrow accounts	467	14,568
Credits and other changes in cash outflow, net	877	2,567
Accrued contingent consideration	0	9,714
Gross acquisition price of investment properties	159,800	633,425
Sale and transfer of investment properties:
Net investment properties	251,383	166,724
Accounts receivable, lease intangibles, and deferred costs and other assets	10,077	5,597
Accounts payable, accrued expenses, lease intangibles, and other liabilities	(10,289)	(3,682)
Debt extinguished through transfer of properties	(44,331)	(3,383)
Debt extinguished through disposition of properties	(14,854)	0
Gain on sale and transfer of investment properties, net	51,741	31,749
Gain on extinguishment of debt, net	(10,697)	(838)
Proceeds from sale and transfer of investment properties, net	254,424	197,843
Transfer of mortgage principal to buyer	16,600	0
Surrender of mortgage escrows for transferred properties	2,160	8,071
Credits and other changes in cash inflow, net	9,766	216
Gross disposition price of investment properties	$ 282,950	$ 206,130

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Cash Flows [Abstract]
Proceeds from sale and transfer of investment properties, net	$ 254,424	$ 197,843
Income tax refunds	$ 138	$ 509

Organization

Organization	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization The Company was incorporated as Inland American Real Estate Trust, Inc. in October of 2004 as a Maryland corporation and has elected to be taxed, and currently qualifies, as a real estate investment trust ("REIT") for federal tax purposes. The Company is taxed and operates in a manner that will allow the Company to continue to qualify as a REIT for U.S. federal income tax purposes. So long as it maintains its qualification as a REIT, the Company generally will not be subject to U.S. federal income tax on taxable income that is distributed to stockholders. If the Company fails to continue to qualify as a REIT in any taxable year, without the benefit of certain relief provisions, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and would not be able to re-elect REIT status during the four years following the year of the failure. The Company changed its name to InvenTrust Properties Corp. in April of 2015. The Company was formed to own, manage, acquire, and develop a diversified portfolio of commercial real estate located throughout the United States and to own properties in development, to partially own properties through joint ventures, and to own investments in marketable securities and other assets. The Company is now solely focused on owning, managing, acquiring, and developing a multi-tenant retail platform. As used throughout this Quarterly Report, the terms "Company," "InvenTrust," "we," "us," or "our" mean InvenTrust Properties Corp. and its wholly owned and unconsolidated joint venture investments. Unless otherwise noted, all amounts are stated in thousands, except share, per share, and per square foot data. Any reference to number of properties, square feet, tenant and occupancy data are unaudited. The accompanying condensed consolidated financial statements include the accounts of the Company, and all wholly owned subsidiaries and any consolidated variable interest entities (VIEs). Subsidiaries generally consist of limited liability companies (LLCs) and limited partnerships (LPs). All significant intercompany balances and transactions have been eliminated. Each retail property is owned by a separate legal entity that maintains its own books and financial records, and each separate legal entity's assets are not available to satisfy the liabilities of other affiliated entities, except as otherwise disclosed in " Note 7. Debt." As of September 30, 2018 , the Company's assets consisted of 63 retail properties, including two retail properties classified as consolidated VIEs. As of September 30, 2017 , the Company's assets consisted of 70 retail properties. In addition, as of September 30, 2018 and 2017, the Company had significant investments in two operating real estate joint ventures, one of which owns an interest in 14 and 15 retail properties, respectively, managed by the Company. The other joint venture owns land to be developed in Sacramento, California.

Basis of Presentation and Recen

Basis of Presentation and Recently Issued Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation and Recently Issued Accounting Pronouncements	Basis of Presentation and Recently Issued Accounting Pronouncements The accompanying condensed consolidated financial statements have been prepared in accordance with GAAP, which requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates, judgments and assumptions are required in a number of areas, including, but not limited to, evaluating the impairment of long-lived assets, allocating the purchase price of acquired assets, determining the fair value of debt and evaluating the collectability of accounts receivable. The Company bases these estimates, judgments and assumptions on historical experience and various other factors that the Company believes to be reasonable under the circumstances. Actual results may differ from these estimates. Reclassifications The Company has made certain reclassifications to the condensed consolidated statement of operations and comprehensive income for the three and nine months ended September 30, 2017 to conform to the 2018 presentation, including a $1,019 and $2,846 reclassification, respectively, of certain payroll costs from general and administrative expenses to property operating expenses based on the determination by the Company that certain functions' activities were more directly associated with the operations of the retail properties than corporate-level activities. In addition, upon the adoption of ASU No. 2016-18, Statement of Cash Flows, the Company has made certain reclassifications to the condensed consolidated statement of cash flows for the nine months ended September 30, 2017 to conform to the 2018 presentation. For the nine months ended September 30, 2017 , the adoption resulted in a net $4,092 increase in cash used in investing activities. The Company determined that the presentation of funds held in escrow for potential future property acquisitions as restricted cash most appropriately reflects the nature of the restrictions on the balances and underlying transactions; historically, the funds were recorded as deferred costs and other assets, net. This reclassification increased restricted cash on the condensed consolidated balance sheets by $6,650 as of December 31, 2016. As a result, the Company made additional reclassifications to the condensed consolidated statement of cash flows for the nine months ended September 30, 2017 to conform to the 2018 presentation, including a $6,650 increase in net cash used in investing activities resulting from the reclassification of funds held in escrow for potential future property acquisitions. Recently Issued Accounting Pronouncements Adopted Standard Description Date of adoption Effect on the financial statements or other significant matters ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) and related updates Under ASU No. 2014-09, an entity is required to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those promised goods or services. The standard allows either a full or modified retrospective method of adoption. January 2018 The Company adopted ASU No. 2014-09 and the related subsequent updates on a modified retrospective basis. The Company has included "Note 3. Revenue Recognition" to address the incremental disclosures pertaining to the new standard which enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities Under ASU No. 2016-01, equity investments are generally required to be measured at fair value with changes in fair value recognized in net income. Historically, changes in fair value were reported as a separate component of comprehensive income (loss) until realized. January 2018 The Company adopted ASU No. 2016-01 on a modified retrospective basis. The Company determined that this standard did not have a significant impact on the condensed consolidated financial statements. ASU No. 2016-15, Statement of Cash Flows ASU No. 2016-15 reduces existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows, including payment of debt extinguishment costs, settlement of zero-coupon bonds, insurance claim proceeds, and distributions from equity method investees. January 2018 The Company adopted ASU No. 2016-15 on a retrospective basis. The Company determined that this standard did not have a significant impact on the condensed consolidated financial statements. ASU No. 2016-18, Statement of Cash Flows ASU No. 2016-18 requires an entity to explain the changes in the combined total of restricted and unrestricted cash in the statement of cash flows. January 2018 Upon the Company’s retrospective method adoption, the Company includes amounts generally described as restricted cash with cash and cash equivalents. For the nine months ended September 30, 2017, the adoption resulted in a net $4,092 increase in net cash used in investing activities. Recently Issued Accounting Pronouncements Adopted, continued Standard Description Date of adoption Effect on the financial statements or other significant matters ASU No. 2017-05, Other Income-Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20) ASU No. 2017-05, which adds guidance for partial sales of nonfinancial assets and clarifies the scope of Subtopic 610-20, Gains and Losses from the Derecognition of Nonfinancial Assets , applies to the derecognition of all nonfinancial assets (including real estate) for which the counterparty is not a customer. The new guidance requires an entity to derecognize a nonfinancial asset in a partial sale transaction when it ceases to have a controlling financial interest in the asset and has transferred control of the asset and generally requires the full gain be recognized. January 2018 For property sales where the Company has no continuing involvement, there should be no change to the Company's timing of gain or loss recognition. The Company adopted ASU No. 2017-05 in conjunction with the new revenue standard on January 1, 2018, resulting in deferred gains of $12,756 recognized through beginning distributions in excess of accumulated net income, as discussed in " Note 6. Investment in Consolidated and Unconsolidated Entities". Recently Issued Accounting Pronouncements Not Yet Adopted Standard Description Date of adoption Effect on the financial statements or other significant matters ASU No. 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities ASU No. 2017-12 is intended to better align the results of cash flow and fair value hedge accounting with risk-management activities through changes to both the designation and measurement guidance for qualifying hedging relationships in the financial statements. The transition guidance provides the option of early adoption of the new standard using a modified retrospective transition method in any interim period, or alternatively requires adoption for fiscal years beginning after December 15, 2018. January 2019 The Company is continuing to evaluate this guidance but does not expect its adoption will have a significant impact on the condensed consolidated financial statements. ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement ASU No. 2018-13 is intended to improve the effectiveness of the disclosures required by Topic 820, Fair Value Measurement by eliminating, amending, or adding certain disclosures. The amendments in this ASU are the result of a broader disclosure project called FASB Concepts Statement, Conceptual Framework for Financial Reporting — Chapter 8: Notes to Financial Statements, which was finalized on August 28, 2018. Certain amendments require a prospective transition method, while others require a retrospective transition method. The guidance is effective for all entities for fiscal years beginning after December 15, 2019, and early adoption is permitted. January 2020 The Company is continuing to evaluate this guidance but does not expect its adoption will have a significant impact on the condensed consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted, continued Standard Description Date of adoption Effect on the financial statements or other significant matters ASU No. 2016-02, Leases, (Topic 842) and related updates ASU No. 2016-02 amends the existing guidance for lease accounting for both parties to a lease contract (i.e. lessees and lessors). ASU No. 2016-02 will be effective for annual reporting periods beginning after December 15, 2018, and early adoption is permitted. The new standard requires a modified retrospective transition method for all leases existing at the date of initial application, with an option to use certain practical expedients available. January 2019 The Company will adopt the new standard and related updates on a modified retrospective basis on January 1, 2019 and will apply the effective date method in which the elected practical expedients will be applied consistently to all leases commenced before the effective date of January 1, 2019. The Company's comparative periods will not be restated. Any other recently issued accounting standards or pronouncements not disclosed above have been excluded as they are either not relevant to the Company, or are not expected to have a material effect on the condensed consolidated financial statements of the Company.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition As a result of the adoption of Topic 606, Revenue from Contracts with Customers ("Topic 606"), the Company has changed its accounting policy from Topic 605, Revenue Recognition ("Topic 605"), for revenue recognized through other fee income on the condensed consolidated statement of operations and comprehensive income. The comparative period information has not been adjusted and continues to be reported under Topic 605. For the comparative period information reported under Topic 605, the Company recognized the fees as revenue when the related services were performed. The implementation of Topic 606 generally did not change the timing or pattern of revenue recognition for other fee income. As a result, there was no cumulative effect recognized. The Company has elected to apply Topic 606 to new and existing contracts that are not completed contracts as of January 1, 2018. The Company has changed its accounting policy regarding the sales of investment property in accordance with Subtopic 610-20. When a sale contract exists and the Company has transferred control of the investment property, the Company derecognizes the investment property and recognizes a gain or loss equal to the difference between the amount of consideration transferred and the carrying amount of the investment property. Historically, the Company recognized gains and losses from the sale of investment property at the time of sale using the full accrual method based on the criteria in Topic 360-20, Property, Plant and Equipment - Real Estate Sales . The following table reflects the disaggregation of other fee income: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Property management fees $ 631 $ 671 $ 1,996 $ 2,126 Asset management fees 269 303 831 910 Leasing commissions and other fees 65 44 138 176 Other fee income $ 965 $ 1,018 $ 2,965 $ 3,212 Contract Balances The Company recognizes revenue when it satisfies a performance obligation. These rights to consideration most often result in receivables that are settled through recurring monthly customer payments for services provided over the term of the contract, which has a remaining original duration through 2023. The Company generally does not receive prepayments for services or recognize revenue prior to being legally entitled to payment from the customer. As a result, the Company generally does not record material contract assets or contract liabilities. The Company has receivables of $683 and $515 as of September 30, 2018 and December 31, 2017, respectively, which are included in deferred costs and other assets, net, on the condensed consolidated balance sheets. Property Management and Asset Management Fees The Company earns property management and asset management fees from services provided to our joint venture partnerships. Property management and asset management fees are recognized over time as services are rendered. The bundled services of the property management performance obligation and asset management performance obligation each qualify as a series of distinct services satisfied over time. The variable consideration related to each of the performance obligations is recognized in each of the periods that directly relate to the Company's efforts to provide those services. Accordingly, the Company has elected the optional exemption provided by Topic 606 and does not disclose information about remaining wholly unsatisfied performance obligations. The uncertainty of the property management and asset management fees, which generally relate to the fluctuation in cash receipts from tenants and potential changes in equity capitalization, are resolved on a monthly basis. For certain services, the Company acts as an agent on behalf of the customer to arrange for performance by a third-party. Based on the Company's judgment, both the underlying asset management service activities and the underlying property management service activities are not distinct but are inputs (or fulfillment activities) to provide the combined output (either the overall asset management service or the overall property management service). Leasing Commissions and Other Fees The Company earns leasing commissions and other fees from services provided to our joint venture partnerships. Leasing commissions and other fees are recognized at a point in time consistent with the underlying service. The leasing performance obligation and other performance obligations are satisfied at the point in time which the customer is transferred control over and consumes the benefit of the service. The variable consideration related to each of the performance obligations is recognized in each of the periods that directly relate to the Company's efforts to provide those services. The uncertainty of the leasing commissions and other fees are resolved upon delivery of the underlying service.

Acquired Properties

Acquired Properties	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Acquired Properties	Acquired Properties The following table reflects the retail properties acquired, accounted for as asset acquisitions, during the nine months ended September 30, 2018 : Property Metropolitan Statistical Area (MSA)(a) Acquisition Date Gross Acquisition Price Square Feet PGA Plaza (b) Miami-Fort Lauderdale-West Palm Beach, FL May 16, 2018 $ 88,000 120,000 Kennesaw Marketplace (b) Atlanta-Sandy Springs-Roswell, GA May 30, 2018 64,300 117,000 Kennesaw Marketplace, Phase 3 (c) Atlanta-Sandy Springs-Roswell, GA September 13, 2018 7,500 13,000 $ 159,800 250,000 (a) As defined by the United States Office of Management and Budget. (b) These acquisitions were made through two consolidated VIEs and used to facilitate an Internal Revenue Code Section 1031 tax-deferred exchange ("Reverse 1031 Exchange"). (c) The assets, liabilities, and operations of Kennesaw Marketplace, Phase 3, are accounted for as part of the larger Kennesaw Marketplace retail property. The following table summarizes the retail properties acquired, accounted for as asset acquisitions, during the nine months ended September 30, 2017 : Property MSA Acquisition Date Gross Acquisition Price Square Feet Campus Marketplace (a) San Diego-Carlsbad, CA January 6, 2017 $ 73,350 144,000 Paraiso Parc and Westfork Plaza Miami-Fort Lauderdale-West Palm Beach, FL February 1, 2017 163,000 393,000 The Shops at Town Center Washington-Arlington-Alexandria, DC-VA-MD-WV February 21, 2017 53,550 125,000 Cary Park Town Center Raleigh-Cary, NC August 14, 2017 25,000 93,000 The Parke Austin-Round Rock, TX August 18, 2017 112,250 364,000 The Plaza Midtown Atlanta-Sandy Springs-Roswell, GA August 18, 2017 31,800 70,000 River Oaks (b) San Jose-Sunnyvale-Santa Clara, CA September 14, 2017 115,000 275,000 Kyle Marketplace (b) Austin-Round Rock, TX September 21, 2017 59,475 226,000 $ 633,425 1,690,000 (a) As part of this acquisition, the Company assumed mortgage debt of $41,717 , as reported within non-cash financing activities on the condensed consolidated statement of cash flows for the nine months ended September 30, 2017 . (b) These asset acquisitions were structured as Reverse 1031 Exchanges. During the first quarter of 2018, the title of Kyle Marketplace and River Oaks transferred to the Company through the completions of an exchange and expiration of the 180-day waiting period, respectively. The Company incurred transaction costs of $60 and $260 during the three and nine months ended September 30, 2018 , respectively, and $524 and $1,692 during the three and nine months ended September 30, 2017 , respectively, which were capitalized and included in building and other improvements on the Company's condensed consolidated balance sheets. The following table summarizes the estimated fair value of the retail properties' assets acquired and liabilities assumed for the nine months ended September 30, 2018 and September 30, 2017 : 2018 Acquisitions 2017 Acquisitions Land $ 23,001 $ 125,990 Building and other improvements 127,216 440,204 Total investment properties 150,217 566,194 Intangible assets (a) 14,054 69,306 Intangible liabilities (b) (5,119 ) (19,099 ) Net other assets and liabilities 648 17,024 Total fair value of assets acquired and liabilities assumed $ 159,800 $ 633,425 (a) Intangible assets include in-place leases and above-market leases. (b) Intangible liabilities include below-market leases.

Disposed Properties

Disposed Properties	9 Months Ended
	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Disposed Properties	Disposed Properties Continuing operations The following retail properties were disposed of during the nine months ended September 30, 2018 : Date Property Square Feet Gross Disposition Price Gain (Loss) on Sale of Investment Properties, net Gain (Loss) on Extinguishment of Debt (d) January 9, 2018 Sherman Town Center I & II 485,000 $ 63,000 $ 12,382 $ — January 25, 2018 Grafton Commons 239,000 33,500 6,564 — March 8, 2018 Lakeport Commons 283,000 31,000 (666 ) — March 21, 2018 Stonecrest Marketplace (a) 265,000 — 1,777 10,752 March 31, 2018 Northwest Marketplace (b) — — 248 — April 17, 2018 Market at Morse/Hamilton 45,000 10,000 1,592 — May 24, 2018 Siegen Plaza 156,000 29,000 3,849 (54 ) June 20, 2018 Tomball Town Center 67,000 22,750 7,184 — June 26, 2018 Bellerive Plaza (c) 76,000 — (22 ) 1,694 June 28, 2018 Parkway Centre North 143,000 23,700 5,357 (1,695 ) September 14, 2018 Tulsa Hills 473,000 70,000 13,476 — 2,232,000 $ 282,950 $ 51,741 $ 10,697 (a) On March 21, 2018, the Company surrendered Stonecrest Marketplace, with a carrying value of $23,932 , to the lender in satisfaction of non-recourse debt with an initial maturity date of March 1, 2017 and recognized a gain on transfer of assets, net, of $1,777 . The Company is not aware of any material outstanding commitments and contingencies related to Stonecrest Marketplace. (b) The Company recognized a gain on sale of $248 related to the completion of a partial condemnation at this retail property. (c) On June 26, 2018, the Company surrendered Bellerive Plaza, with a carrying value of $4,771 , to the lender in satisfaction of non-recourse debt with an initial maturity date of June 1, 2017. The Company recognized a loss on transfer of assets, net, of $22 . The Company is not aware of any material outstanding commitments and contingencies related to Bellerive Plaza. (d) In addition to the gain or loss recognized as a result of the disposition of retail properties, the Company extinguished an additional loan on a retail property resulting in a loss on debt extinguishment of $4 . In aggregate, the Company recognized net proceeds of $254,424 from the sales, surrender, and condemnation of these properties on the condensed consolidated statement of cash flows during the nine months ended September 30, 2018 . The following retail properties were disposed of during the nine months ended September 30, 2017 : Date Property Square Feet Gross Disposition Price Gain (Loss) on Sale of Investment Properties, net Gain (Loss) on Extinguishment of Debt January 10, 2017 Penn Park 242,000 $ 29,050 $ 1,021 $ — May 17, 2017 Intech Retail (a) 19,000 — (53 ) 882 May 19, 2017 Sparks Crossing 336,000 40,280 10,584 — June 23, 2017 Lincoln Village 164,000 30,000 2,355 — June 30, 2017 Market at Westlake (b) — — 474 — July 31, 2017 Pavilions at Hartman Heritage 223,000 21,700 (1,708 ) — July 31, 2017 Legacy Crossing 134,000 10,250 (211 ) (1 ) September 28, 2017 Heritage Plaza 132,000 21,350 9,172 (41 ) 1,250,000 $ 152,630 $ 21,634 $ 840 (a) On May 17, 2017, the Company surrendered Intech Retail, with a carrying value of $2,338 , to the lender in satisfaction of non-recourse debt with an initial maturity date of November 1, 2016 and recognized a loss on transfer of assets, net, of $53 . The Company is not aware of any material outstanding commitments and contingencies related to Intech Retail. (b) The Company recognized a gain on sale of $474 related to the completion of a partial condemnation at this retail property. In aggregate, the Company recognized net proceeds of $197,843 from the sales, surrender, and condemnation of these properties on the condensed consolidated statement of cash flows during the nine months ended September 30, 2017 . Discontinued operations On August 30, 2017 , the Company sold its remaining non-core office property, Worldgate Plaza, for a gross disposition price of $53,500 . This disposition represented the conclusion of the Company's strategic shift away from a diversified portfolio of commercial real estate assets not classified as multi-tenant retail. Certain reclassifications were made to discontinued operations on the condensed consolidated statement of operations and comprehensive income for the three and nine months ended September 30, 2017 to reflect the operations of Worldgate Plaza. Three months ended September 30, 2017 Nine months ended September 30, 2017 Total income $ 844 $ 3,855 Less: Depreciation and amortization expense 301 1,205 General and administrative, property operating, and real estate tax expenses 492 2,398 Operating income from discontinued operations 51 252 Interest expense, income taxes, and other miscellaneous expenses (443 ) (1,993 ) Gain on sale of properties, net 10,115 10,115 Loss on extinguishment of debt (2 ) (2 ) Net income from discontinued operations $ 9,721 $ 8,372 Net income per common share, from discontinued operations, basic and diluted $ 0.01 $ 0.01 Weighted average number of common shares outstanding, basic and diluted 773,517,492 773,405,710

Investment in Consolidated and

Investment in Consolidated and Unconsolidated Entities	9 Months Ended
	Sep. 30, 2018
Investment in Partially Owned Entities [Abstract]
Investment in Consolidated and Unconsolidated Entities	Investment in Consolidated and Unconsolidated Entities Consolidated Entities During the second quarter of 2018, the Company entered into purchase agreements structured as Reverse 1031 Exchanges and loaned $152,300 to the VIEs to acquire PGA Plaza and Kennesaw Marketplace, which were the Company's only active Reverse 1031 Exchanges. As of September 30, 2018 , the Company was deemed to be the primary beneficiary as it has the ability to direct the activities of the entities that most significantly impact economic performance and has all of the risks and rewards of ownership. Accordingly, the Company consolidated each active Reverse 1031 Exchange at September 30, 2018 . The liabilities of the VIEs are non-recourse to the Company, and the assets must first be used to settle obligations of the VIEs. The following table presents the net assets of the VIEs as of September 30, 2018 . September 30, 2018 Net investment properties $ 142,329 Other assets 14,225 Total assets 156,554 Other liabilities (6,614 ) Net assets $ 149,940 Unconsolidated Entities The entities listed below are owned by the Company and other unaffiliated parties in joint ventures. Net income, distributions and capital transactions for these entities are allocated to the Company and its joint venture partners in accordance with the respective partnership agreements. Carrying Value of Investment as of Entity Description Ownership % September 30, 2018 December 31, 2017 IAGM Retail Fund I, LLC Multi-tenant retail shopping centers 55% $ 128,286 $ 123,693 Downtown Railyard Venture, LLC Land development 90% 59,961 57,183 Other unconsolidated entities Various real estate investments Various (112 ) (112 ) $ 188,135 $ 180,764 On April 17, 2013, the Company entered into a joint venture, IAGM Retail Fund I, LLC ("IAGM"), with PGGM Private Real Estate Fund, for the purpose of acquiring, owning, managing, supervising, and disposing of retail properties and sharing in the profits and losses from those retail properties and their activities. The Company contributed 14 properties to IAGM during the year ended December 31, 2013, and treated the contribution as a partial sale under Topic 360-20, " Property, Plant and Equipment - Real Estate Sales, " and deferred an aggregate gain of $15,625 as a result of the property sales into the joint venture. Through December 31, 2017, the Company was amortizing the basis adjustment over 30 years, consistent with the depreciation period of the investee's underlying assets. In accordance with the provisions of ASU No. 2017-05, full gain recognition may be required for property sales in which the Company has continuing involvement, where those gains may have been deferred under prior GAAP. As of January 1, 2018, with the adoption of ASU No. 2017-05, the Company's remaining $12,756 of the aforementioned deferred gain has been recognized through beginning distributions in excess of accumulated net income. During the three months ended September 30, 2018 , IAGM recognized a provision for asset impairment of $1,405 on one retail property. During the nine months ended September 30, 2018 , IAGM recognized a provision for asset impairment of $3,673 on three retail properties. During the nine months ended September 30, 2018 , IAGM disposed of one retail property and recognized a loss on sale of $3,905 . For the three and nine months ended September 30, 2018 , the Company's share of IAGM's provision for asset impairment was $773 and $2,020 , respectively, and its share of the loss on sale for the nine months ended September 30, 2018 , was $2,148 . Combined Financial Information The following tables present the combined condensed financial information for the Company's unconsolidated entities. As of September 30, 2018 December 31, 2017 Assets: Real estate assets, net of accumulated depreciation $ 545,014 $ 586,671 Other assets 99,630 73,423 Total assets $ 644,644 $ 660,094 Liabilities and equity: Debt, net 311,699 311,574 Other liabilities 45,858 49,032 Equity 287,087 299,488 Total liabilities and equity $ 644,644 $ 660,094 Company's share of equity $ 187,905 $ 193,572 Cost of investments in excess of the Company's share of underlying net book value, net of accumulated amortization of $0 and $2,647, respectively. 230 (12,808 ) Carrying value of investments in unconsolidated entities $ 188,135 $ 180,764 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Revenues $ 15,087 $ 15,543 $ 44,951 $ 49,307 Expenses: Interest expense and loan cost amortization 3,434 3,505 10,240 10,032 Depreciation and amortization 5,124 6,234 16,401 18,848 Operating expenses, ground rent and general and administrative expenses 4,766 5,193 15,774 17,463 Provision for asset impairment 1,405 — 3,673 — Total expenses 14,729 14,932 46,088 46,343 Net income (loss) before gain (loss) on sale of real estate 358 611 (1,137 ) 2,964 Gain (loss) on sale of real estate 13 — (3,892 ) — Net income (loss) $ 371 $ 611 $ (5,029 ) $ 2,964 Company's share of net income (loss), net of excess basis depreciation of $0, $130, $0 and $390, respectively $ (93 ) $ 648 $ (3,069 ) $ 1,895 Distributions from unconsolidated entities in excess of the investments' carrying value 50 — 274 — Equity in (losses) earnings of unconsolidated entities $ (43 ) $ 648 $ (2,795 ) $ 1,895 The following table shows the scheduled maturities of IAGM's mortgages payable as of September 30, 2018 for the remainder of 2018, each of the next four years, and thereafter. Maturities during the year ending December 31, 2018 2019 2020 2021 2022 Thereafter Total Mortgages payable $ 188,925 31,353 — 23,150 — 68,805 $ 312,233 On June 30, 2018, IAGM entered into a one-year extension on a non-recourse mortgage loan with a balance of $15,103 related to one retail property. The original maturity date of June 30, 2018 has been extended to June 30, 2019. On October 5, 2018, IAGM used proceeds from the sale of Victory Lakes to extinguish $38,300 of mortgages payable at two retail properties maturing in 2018 and on November 2, 2018, IAGM entered into a non-revolving, senior secured term loan facility of $152,000 to refinance its remaining mortgages payable maturing in 2018, as disclosed in "Note 12. Subsequent Events." As of September 30, 2018 , $23,000 of mortgages payable by the joint venture are recourse to the Company. Subsequent to the execution of the November 2, 2018 non-revolving, senior secured term loan facility, these mortgages payable are no longer recourse of the Company.

Debt

Debt	9 Months Ended
	Sep. 30, 2018
Notes and Loans Payable [Abstract]
Debt	Debt As of September 30, 2018, the Company's total debt, net, was $589,994 , which consists of mortgages payable, net, of $239,264 and credit agreements, net, of $350,730 . The Company believes that it has the ability to repay, refinance or extend any of its debt, and that it has adequate sources of funds to meet short-term cash needs related to mortgages payable. It is anticipated that the Company will use proceeds from property sales, cash on hand, available capacity on term loan and line of credit, if any, to repay, refinance or extend the mortgages payable maturing in the near term. Mortgages payable As of September 30, 2018 and December 31, 2017, the Company had the following mortgages payable outstanding: September 30, 2018 December 31, 2017 Mortgages payable (a) $ 240,351 $ 370,804 Premium, net of accumulated amortization 299 478 Discount, net of accumulated amortization (167 ) (195 ) Debt issuance costs, net of accumulated amortization (1,219 ) (1,611 ) Total mortgages payable, net $ 239,264 $ 369,476 (a) Mortgages payable had fixed interest rates (for both conforming loans and loans in default) ranging from 3.49% to 5.49% , with a weighted average interest rate of 4.37% as of September 30, 2018 , and 3.49% to 10.45% with a weighted average interest rate of 5.13% , as of December 31, 2017 . Some of the mortgage loans require compliance with certain covenants, such as debt service coverage ratios, investment restrictions and distribution limitations. As of September 30, 2018 , the Company was in compliance with all mortgage loan requirements. Of the total outstanding mortgages payable, $3,000 is recourse to the Company as of September 30, 2018 . The following table shows the scheduled maturities of the Company's mortgages payable as of September 30, 2018 for the remainder of 2018, each of the next four years, and thereafter. Maturities during the year ending December 31, 2018 2019 2020 2021 2022 Thereafter Total Mortgages payable $ 7,575 $ — $ 41,000 $ 12,627 $ 50,982 $ 128,167 $ 240,351 On November 5, 2018, the Company used cash on hand to extinguish a mortgage payable maturing in 2018 of $7,575 . Subsequent to this extinguishment, there were no outstanding mortgages payable recourse to the Company. Credit agreements On November 5, 2015 , the Company entered into a term loan credit agreement for a $300,000 unsecured credit facility with an accordion feature that allows the Company to increase the size of the unsecured term loan credit facility to $600,000 , subject to certain conditions. The term loan credit facility is subject to the maintenance of certain financial covenants. As of September 30, 2018 and December 31, 2017 , the Company was in compliance with all of the covenants and default provisions under the term loan credit agreement. On February 3, 2015, the Company entered into an amended and restated credit agreement for a $300,000 unsecured revolving line of credit with an accordion feature that allows the Company to increase the size of its unsecured line of credit up to $600,000 , subject to certain conditions. The unsecured revolving line of credit matures on February 2, 2019 and contains one twelve-month extension option that the Company may exercise upon payment of an extension fee equal to 0.15% of the commitment amount on the maturity date and subject to certain other conditions. The unsecured revolving line of credit bears interest at a rate equal to 1-Month LIBOR plus 1.40% and requires the maintenance of certain financial covenants. On July 12, 2018, the Company drew $52,000 on the unsecured revolving line of credit to repay some of the Company's mortgages payable that are maturing in 2018. The Company had $248,000 available under the unsecured revolving line of credit as of September 30, 2018 . As of September 30, 2018 and December 31, 2017, the Company had the following borrowings outstanding under its term loan credit facility and line of credit: September 30, 2018 December 31, 2017 Aggregate Principal Balance Interest Rate Aggregate Interest Rate Maturity Date 5 year - swapped to fixed rate (a) $ 90,000 2.6510% $ 90,000 2.6510% January 15, 2021 5 year - swapped to fixed rate (b) 60,000 2.6525% 60,000 2.6525% January 15, 2021 5 year - variable rate (c) 50,000 3.4038% 50,000 2.6607% January 15, 2021 7 year - variable rate (d) 100,000 3.7038% 100,000 2.9607% November 5, 2022 Total unsecured term loans 300,000 300,000 Issuance costs, net of accumulated amortization (1,270 ) (1,615 ) Total unsecured term loans, net of amortized issuance costs $ 298,730 $ 298,385 Unsecured revolving line of credit - variable rate (e) 52,000 3.5211% — n/a February 2, 2019 Total outstanding credit agreements, net $ 350,730 (a) The Company swapped $90,000 of variable rate debt at an interest rate of 1-Month LIBOR plus 1.3% to a fixed rate of 2.6510% . The swap has an effective date of December 10, 2015, a termination date of December 1, 2019, and a notional amount of $90,000 . (b) The Company swapped $60,000 of variable rate debt at an interest rate of 1-Month LIBOR plus 1.3% to a fixed rate of 2.6525% . The swap has an effective date of December 10, 2015, a termination date of December 1, 2019, and a notional amount of $60,000 . (c) Interest rate reflects 1-Month LIBOR plus 1.3% as of September 30, 2018 and December 31, 2017. (d) Interest rate reflects 1-Month LIBOR plus 1.6% as of September 30, 2018 and December 31, 2017. (e) Interest rate reflects 1-Month LIBOR plus 1.4% as of September 30, 2018 .

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Recurring Measurements For assets and liabilities measured at fair value on a recurring basis, quantitative disclosure of the fair value for each major category of assets and liabilities is presented below: Fair Value Measurements at September 30, 2018 Assets Level 1 Level 2 Level 3 Marketable equity securities $ 1,078 $ — $ — Real estate related bonds — 307 — Derivative interest rate swaps — 2,295 — Total assets $ 1,078 $ 2,602 $ — Fair Value Measurements at December 31, 2017 Assets Level 1 Level 2 Level 3 Available-for-sale marketable securities $ 4,431 $ — $ — Real estate related bonds — 327 — Derivative interest rate swaps — 1,670 — Total assets $ 4,431 $ 1,997 $ — Level 1 At September 30, 2018 and December 31, 2017 , the fair value of the marketable equity securities has been determined based upon quoted market prices. Level 2 To calculate the fair value of the real estate related bonds and the derivative interest rate instruments, the Company primarily uses quoted prices for similar securities and contracts. For the real estate related bonds, the Company reviews price histories for similar market transactions. For the derivative interest rate instruments, the Company uses inputs based on data that is observed in the forward yield curve that is widely observable in the marketplace. The Company also incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements which utilizes Level 3 inputs, such as estimates of current credit spreads. As of September 30, 2018 and December 31, 2017 , the Company determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company's derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. As of September 30, 2018 and December 31, 2017 , the Company had outstanding interest rate swap agreements with an aggregate notional value of $150,000 . Level 3 At September 30, 2018 and December 31, 2017 , the Company had no Level 3 recurring fair value measurements. Nonrecurring Measurements During the nine months ended September 30, 2018 , the Company identified three retail properties that had reductions in the expected holding periods. The Company's estimated fair value was based on executed purchase contracts. The Company recorded a provision for asset impairment of $3,510 on these three retail properties. During the three months ended September 30, 2018, the Company identified two retail properties that had reductions in the expected holding periods. The Company's estimated fair value was based on executed purchase contracts. The Company recorded a provision for asset impairment of $2,713 on these two retail properties. During the nine months ended September 30, 2017 , the Company identified three retail properties that had reductions in the expected holding periods and reviewed the probability of these retail properties' dispositions. The Company's estimated fair values were based on broker opinions of value and letters of intent. The Company recorded a provision for asset impairment of $16,440 on these three retail properties. There was no provision for asset impairment recorded for the three months ended September 30, 2017 . The following table summarizes activity for the Company’s assets measured at fair value on a nonrecurring basis and the related impairment charges for the three and nine months ended September 30, 2018 and 2017 : For the three months ended September 30, For the nine months ended September 30, 2018 2017 2018 2017 Level 3 Impairment Losses Level 3 Impairment Losses Level 3 Impairment Losses Level 3 Impairment Losses Investment properties $ 33,075 $ 2,713 $ — $ — $ 64,075 $ 3,510 $ 36,676 $ 16,440 Financial Instruments Not Measured at Fair Value The table below represents the fair value of financial instruments presented at carrying values in the Company's condensed consolidated financial statements as of September 30, 2018 and December 31, 2017 . September 30, 2018 December 31, 2017 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Mortgages payable $ 240,351 $ 236,433 $ 370,804 $ 372,962 Unsecured term loans and revolving line of credit $ 352,000 $ 352,276 $ 300,000 $ 299,770 The Company estimated the fair value of its mortgages payable using a weighted average effective market interest rate of 4.71% and 4.20% as of September 30, 2018 and December 31, 2017 , respectively. The fair value estimate of the line of credit and term loan approximates the carrying value due to limited market volatility in pricing. The assumptions reflect the terms currently available on similar borrowing terms to borrowers with credit profiles similar to the Company's. As a result, the Company used a weighted average interest rate of 4.08% and 3.48% as of September 30, 2018 and December 31, 2017 , respectively, to estimate the fair value of its line of credit and term loan. The Company has determined that its debt instrument valuations are classified in Level 2 of the fair value hierarchy.

Earnings per Share and Equity T

Earnings per Share and Equity Transactions	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share and Equity Transactions The following summarizes the calculation of basic and diluted earnings per share: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Numerator: Net income from continuing operations $ 8,947 $ 12,244 $ 66,342 $ 49,609 Net income from discontinued operations — 9,721 — 8,372 Net income $ 8,947 $ 21,965 $ 66,342 $ 57,981 Denominator: Weighted average shares outstanding, basic and diluted 768,385,770 773,517,492 772,341,263 773,405,710 Net income from continuing operations allocated to common stockholders per share $ 0.01 $ 0.02 $ 0.09 $ 0.06 Net income from discontinued operations allocated to common stockholders per share $ — $ 0.01 $ — $ 0.01 Net income per common share, basic and diluted $ 0.01 $ 0.03 $ 0.09 $ 0.07 On August 15, 2018, the Company announced and commenced a modified "Dutch Auction" tender offer (the "Offer") to purchase for cash up to $75.0 million in value of shares of the Company's common stock, par value $0.001 per share (the "Shares"), subject to the Company's ability to increase the number of Shares accepted for payment in the Offer by up to 2% of the Company's outstanding Shares, without amending or extending the Offer in accordance with the rules promulgated by the SEC. The Company exercised that option and increased the Offer by 10,706,774 shares, or $22.5 million , to avoid any proration for the stockholders tendering shares. The Offer expired on September 13, 2018. As a result of the Offer, the Company has accepted for purchase 46,503,539 shares of its common stock at a purchase price of $2.10 per share, for an aggregate cost of approximately $99.2 million , including fees and expenses, relating to the Offer as of September 30, 2018. Aggregate costs of $99.2 million have been classified as reductions to common stock and additional paid-in capital on the condensed consolidated statement of equity for the nine months ended September 30, 2018. The 46,503,539 shares accepted for purchase in the Offer represented approximately 6.0% of the shares of common stock outstanding at the time of the Offer.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation Incentive Award Plan Effective as of June 19, 2015, the Company's board of directors adopted and approved the InvenTrust Properties Corp. 2015 Incentive Award Plan (as amended, the "Incentive Award Plan"), under which the Company may grant cash and equity incentive awards to eligible employees, directors, and consultants. The restricted share units granted under the Incentive Award Plan to employees vest equally on each of three anniversaries subsequent to the grant date, and annually for those shares granted to directors, subject to the recipients' continued service to the Company. Under the Incentive Award Plan, the Company is authorized to grant up to 30,000,000 shares of the Company's common stock pursuant to awards under the plan. At September 30, 2018 , 23,523,614 shares were available for future issuance under the Incentive Award Plan. A summary of the Company's restricted stock unit activity for the nine months ended September 30, 2018 is as follows: Unvested Restricted Stock Units Weighted Average Grant Date Price Per Share (a) Outstanding as of January 1, 2018 1,535,505 $3.19 Shares granted 1,892,903 $3.14 Shares vested (190,117 ) $3.28 Shares forfeited (427,970 ) $3.20 Outstanding at September 30, 2018 2,810,321 $3.16 (a) On an annual basis, the Company engages an independent third-party valuation advisory consulting firm to estimate the per share value of the Company's common stock on a fully diluted basis. On September 30, 2018 , there was $5,753 of total unrecognized compensation expense related to unvested stock-based compensation arrangements which vest through December 2018, 2019 and 2020, as applicable. The Company recognized stock-based compensation expense of $1,103 and $3,187 for the three and nine months ended September 30, 2018 , respectively, and $1,616 and $4,325 for the three and nine months ended September 30, 2017 , respectively. Stock-based compensation expense is recognized on a straight-line basis over the vesting period and forfeitures of stock-based awards are recognized as they occur.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is subject, from time to time, to various types of third-party legal claims or litigation that arise in the ordinary course of business, including, but not limited to, property loss claims, personal injury or other damages resulting from contact with the Company’s properties. These claims and lawsuits and any resulting damages are generally covered by the Company's insurance policies. The Company accrues for legal costs associated with loss contingencies when these costs are probable and reasonably estimable. While the resolution of these matters cannot be predicted with certainty, management does not expect, based on currently available information, that the final outcome of any pending claims or legal proceedings will have a material adverse effect on the financial condition, results of operations or cash flows of the Company. University House Communities Group, Inc., Indemnity Claims The Company received an indemnity notice from UHC Acquisition Sub LLC ("UHC") regarding certain matters under the Stock Purchase Agreement, dated January 3, 2016, for University House Communities Group, Inc., which was sold in June 2016. The notice sets forth various items for which UHC believes they are entitled to indemnification from the Company. In the normal course of property dispositions, pursuant to the purchase and sale agreements, certain indemnification claims can be made against the Company by the purchaser, in which the Company will continue to adjust the financial statements, as necessary, based on these claims. Based on the facts and circumstances of the indemnification claims made, guidance provided by third-party specialists and counsel, and management’s initial and ongoing assessment of the UHC claims, the Company accrued a potential loss contingency on the condensed consolidated financial statements as of and for the year ended December 31, 2017; the impact of the accrual was not material to the overall condensed consolidated financial statements. Management has accrued their best estimate of the potential loss related to these claims, but, due to the preliminary nature of this matter, the ultimate resolution could result in a loss of up to $5,000 in excess of the amount accrued. As of September 30, 2018 , no material additional information has come to the attention of management that would change their estimate of the potential loss related to these claims.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In preparing its condensed consolidated financial statements, the Company has evaluated events and transactions occurring after September 30, 2018 through the date the financial statements were issued for recognition and disclosure purposes. The Company has disposed of the following power center retail properties subsequent to September 30, 2018: Date Property MSA Square Feet Gross Disposition Price October 5, 2018 McKinney Town Center Dallas-Fort Worth-Arlington, TX 243,000 $ 51,000 October 5, 2018 Riverstone Houston-The Woodlands-Sugar Land, TX 273,000 27,750 October 23, 2018 Hiram Pavilion Atlanta–Sandy Springs–Roswell, GA 363,000 44,350 879,000 $ 123,100 On October 5, 2018, IAGM disposed of Victory Lakes Shopping Center, a 370,000 square foot power center located in the Houston-The Woodlands-Sugar Land, TX MSA for a gross disposition price of $53,000 . IAGM used proceeds from the sale of Victory Lakes to extinguish $38,300 of mortgages payable at two retail properties maturing in 2018. On November 2, 2018, IAGM entered into a non-revolving, senior secured term loan facility of $152,000 to refinance its mortgages payable maturing in 2018. The senior secured term loan facility matures in November 2023 and contains two twelve-month extension options that IAGM may exercise upon payment of an extension fee equal to 0.10% of the commitment amount on the first day of the extension term and subject to certain other conditions. The senior secured term loan facility bears interest at a rate equal to LIBOR daily floating rate plus 1.55% and requires the maintenance of certain financial covenants. Subsequent to this refinance, there were no outstanding IAGM mortgages payable recourse to the Company. On November 5, 2018, the Company used cash on hand to extinguish a mortgage payable at Woodlake Crossing of $7,575 . Subsequent to this refinance, there were no outstanding mortgages payable recourse to the Company.

Basis of Presentation and Rec_2

Basis of Presentation and Recently Issued Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Reclassifications	Reclassifications The Company has made certain reclassifications to the condensed consolidated statement of operations and comprehensive income for the three and nine months ended September 30, 2017 to conform to the 2018 presentation, including a $1,019 and $2,846 reclassification, respectively, of certain payroll costs from general and administrative expenses to property operating expenses based on the determination by the Company that certain functions' activities were more directly associated with the operations of the retail properties than corporate-level activities.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Not Yet Adopted, continued Standard Description Date of adoption Effect on the financial statements or other significant matters ASU No. 2016-02, Leases, (Topic 842) and related updates ASU No. 2016-02 amends the existing guidance for lease accounting for both parties to a lease contract (i.e. lessees and lessors). ASU No. 2016-02 will be effective for annual reporting periods beginning after December 15, 2018, and early adoption is permitted. The new standard requires a modified retrospective transition method for all leases existing at the date of initial application, with an option to use certain practical expedients available. January 2019 The Company will adopt the new standard and related updates on a modified retrospective basis on January 1, 2019 and will apply the effective date method in which the elected practical expedients will be applied consistently to all leases commenced before the effective date of January 1, 2019. The Company's comparative periods will not be restated. Any other recently issued accounting standards or pronouncements not disclosed above have been excluded as they are either not relevant to the Company, or are not expected to have a material effect on the condensed consolidated financial statements of the Company.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Other Fee Income	The following table reflects the disaggregation of other fee income: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Property management fees $ 631 $ 671 $ 1,996 $ 2,126 Asset management fees 269 303 831 910 Leasing commissions and other fees 65 44 138 176 Other fee income $ 965 $ 1,018 $ 2,965 $ 3,212

Acquired Properties (Tables)

Acquired Properties (Tables)	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions	The following table reflects the retail properties acquired, accounted for as asset acquisitions, during the nine months ended September 30, 2018 : Property Metropolitan Statistical Area (MSA)(a) Acquisition Date Gross Acquisition Price Square Feet PGA Plaza (b) Miami-Fort Lauderdale-West Palm Beach, FL May 16, 2018 $ 88,000 120,000 Kennesaw Marketplace (b) Atlanta-Sandy Springs-Roswell, GA May 30, 2018 64,300 117,000 Kennesaw Marketplace, Phase 3 (c) Atlanta-Sandy Springs-Roswell, GA September 13, 2018 7,500 13,000 $ 159,800 250,000 (a) As defined by the United States Office of Management and Budget. (b) These acquisitions were made through two consolidated VIEs and used to facilitate an Internal Revenue Code Section 1031 tax-deferred exchange ("Reverse 1031 Exchange"). (c) The assets, liabilities, and operations of Kennesaw Marketplace, Phase 3, are accounted for as part of the larger Kennesaw Marketplace retail property. The following table summarizes the retail properties acquired, accounted for as asset acquisitions, during the nine months ended September 30, 2017 : Property MSA Acquisition Date Gross Acquisition Price Square Feet Campus Marketplace (a) San Diego-Carlsbad, CA January 6, 2017 $ 73,350 144,000 Paraiso Parc and Westfork Plaza Miami-Fort Lauderdale-West Palm Beach, FL February 1, 2017 163,000 393,000 The Shops at Town Center Washington-Arlington-Alexandria, DC-VA-MD-WV February 21, 2017 53,550 125,000 Cary Park Town Center Raleigh-Cary, NC August 14, 2017 25,000 93,000 The Parke Austin-Round Rock, TX August 18, 2017 112,250 364,000 The Plaza Midtown Atlanta-Sandy Springs-Roswell, GA August 18, 2017 31,800 70,000 River Oaks (b) San Jose-Sunnyvale-Santa Clara, CA September 14, 2017 115,000 275,000 Kyle Marketplace (b) Austin-Round Rock, TX September 21, 2017 59,475 226,000 $ 633,425 1,690,000 (a) As part of this acquisition, the Company assumed mortgage debt of $41,717 , as reported within non-cash financing activities on the condensed consolidated statement of cash flows for the nine months ended September 30, 2017 . (b) These asset acquisitions were structured as Reverse 1031 Exchanges. During the first quarter of 2018, the title of Kyle Marketplace and River Oaks transferred to the Company through the completions of an exchange and expiration of the 180-day waiting period, respectively. The following table summarizes the estimated fair value of the retail properties' assets acquired and liabilities assumed for the nine months ended September 30, 2018 and September 30, 2017 : 2018 Acquisitions 2017 Acquisitions Land $ 23,001 $ 125,990 Building and other improvements 127,216 440,204 Total investment properties 150,217 566,194 Intangible assets (a) 14,054 69,306 Intangible liabilities (b) (5,119 ) (19,099 ) Net other assets and liabilities 648 17,024 Total fair value of assets acquired and liabilities assumed $ 159,800 $ 633,425 (a) Intangible assets include in-place leases and above-market leases. (b) Intangible liabilities include below-market leases.

Disposed Properties (Tables)

Disposed Properties (Tables)	9 Months Ended
	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Not Discontinued Operations, Disposal Activity	The following retail properties were disposed of during the nine months ended September 30, 2018 : Date Property Square Feet Gross Disposition Price Gain (Loss) on Sale of Investment Properties, net Gain (Loss) on Extinguishment of Debt (d) January 9, 2018 Sherman Town Center I & II 485,000 $ 63,000 $ 12,382 $ — January 25, 2018 Grafton Commons 239,000 33,500 6,564 — March 8, 2018 Lakeport Commons 283,000 31,000 (666 ) — March 21, 2018 Stonecrest Marketplace (a) 265,000 — 1,777 10,752 March 31, 2018 Northwest Marketplace (b) — — 248 — April 17, 2018 Market at Morse/Hamilton 45,000 10,000 1,592 — May 24, 2018 Siegen Plaza 156,000 29,000 3,849 (54 ) June 20, 2018 Tomball Town Center 67,000 22,750 7,184 — June 26, 2018 Bellerive Plaza (c) 76,000 — (22 ) 1,694 June 28, 2018 Parkway Centre North 143,000 23,700 5,357 (1,695 ) September 14, 2018 Tulsa Hills 473,000 70,000 13,476 — 2,232,000 $ 282,950 $ 51,741 $ 10,697 (a) On March 21, 2018, the Company surrendered Stonecrest Marketplace, with a carrying value of $23,932 , to the lender in satisfaction of non-recourse debt with an initial maturity date of March 1, 2017 and recognized a gain on transfer of assets, net, of $1,777 . The Company is not aware of any material outstanding commitments and contingencies related to Stonecrest Marketplace. (b) The Company recognized a gain on sale of $248 related to the completion of a partial condemnation at this retail property. (c) On June 26, 2018, the Company surrendered Bellerive Plaza, with a carrying value of $4,771 , to the lender in satisfaction of non-recourse debt with an initial maturity date of June 1, 2017. The Company recognized a loss on transfer of assets, net, of $22 . The Company is not aware of any material outstanding commitments and contingencies related to Bellerive Plaza. (d) In addition to the gain or loss recognized as a result of the disposition of retail properties, the Company extinguished an additional loan on a retail property resulting in a loss on debt extinguishment of $4 . In aggregate, the Company recognized net proceeds of $254,424 from the sales, surrender, and condemnation of these properties on the condensed consolidated statement of cash flows during the nine months ended September 30, 2018 . The following retail properties were disposed of during the nine months ended September 30, 2017 : Date Property Square Feet Gross Disposition Price Gain (Loss) on Sale of Investment Properties, net Gain (Loss) on Extinguishment of Debt January 10, 2017 Penn Park 242,000 $ 29,050 $ 1,021 $ — May 17, 2017 Intech Retail (a) 19,000 — (53 ) 882 May 19, 2017 Sparks Crossing 336,000 40,280 10,584 — June 23, 2017 Lincoln Village 164,000 30,000 2,355 — June 30, 2017 Market at Westlake (b) — — 474 — July 31, 2017 Pavilions at Hartman Heritage 223,000 21,700 (1,708 ) — July 31, 2017 Legacy Crossing 134,000 10,250 (211 ) (1 ) September 28, 2017 Heritage Plaza 132,000 21,350 9,172 (41 ) 1,250,000 $ 152,630 $ 21,634 $ 840 (a) On May 17, 2017, the Company surrendered Intech Retail, with a carrying value of $2,338 , to the lender in satisfaction of non-recourse debt with an initial maturity date of November 1, 2016 and recognized a loss on transfer of assets, net, of $53 . The Company is not aware of any material outstanding commitments and contingencies related to Intech Retail. (b) The Company recognized a gain on sale of $474 related to the completion of a partial condemnation at this retail property.
Disposal Groups, Including Discontinued Operations	Three months ended September 30, 2017 Nine months ended September 30, 2017 Total income $ 844 $ 3,855 Less: Depreciation and amortization expense 301 1,205 General and administrative, property operating, and real estate tax expenses 492 2,398 Operating income from discontinued operations 51 252 Interest expense, income taxes, and other miscellaneous expenses (443 ) (1,993 ) Gain on sale of properties, net 10,115 10,115 Loss on extinguishment of debt (2 ) (2 ) Net income from discontinued operations $ 9,721 $ 8,372 Net income per common share, from discontinued operations, basic and diluted $ 0.01 $ 0.01 Weighted average number of common shares outstanding, basic and diluted 773,517,492 773,405,710 The Company has disposed of the following power center retail properties subsequent to September 30, 2018: Date Property MSA Square Feet Gross Disposition Price October 5, 2018 McKinney Town Center Dallas-Fort Worth-Arlington, TX 243,000 $ 51,000 October 5, 2018 Riverstone Houston-The Woodlands-Sugar Land, TX 273,000 27,750 October 23, 2018 Hiram Pavilion Atlanta–Sandy Springs–Roswell, GA 363,000 44,350 879,000 $ 123,100

Investment in Consolidated an_2

Investment in Consolidated and Unconsolidated Entities (Tables)	9 Months Ended
	Sep. 30, 2018
Investment in Partially Owned Entities [Abstract]
Schedule of Consolidated Variable Interest Entities	The following table presents the net assets of the VIEs as of September 30, 2018 . September 30, 2018 Net investment properties $ 142,329 Other assets 14,225 Total assets 156,554 Other liabilities (6,614 ) Net assets $ 149,940
Schedule of Net Equity Investment and Share of Net Income or Loss	The entities listed below are owned by the Company and other unaffiliated parties in joint ventures. Net income, distributions and capital transactions for these entities are allocated to the Company and its joint venture partners in accordance with the respective partnership agreements. Carrying Value of Investment as of Entity Description Ownership % September 30, 2018 December 31, 2017 IAGM Retail Fund I, LLC Multi-tenant retail shopping centers 55% $ 128,286 $ 123,693 Downtown Railyard Venture, LLC Land development 90% 59,961 57,183 Other unconsolidated entities Various real estate investments Various (112 ) (112 ) $ 188,135 $ 180,764
Schedule of Combined Financial Information of Investment in Unconsolidated Entities	he following tables present the combined condensed financial information for the Company's unconsolidated entities. As of September 30, 2018 December 31, 2017 Assets: Real estate assets, net of accumulated depreciation $ 545,014 $ 586,671 Other assets 99,630 73,423 Total assets $ 644,644 $ 660,094 Liabilities and equity: Debt, net 311,699 311,574 Other liabilities 45,858 49,032 Equity 287,087 299,488 Total liabilities and equity $ 644,644 $ 660,094 Company's share of equity $ 187,905 $ 193,572 Cost of investments in excess of the Company's share of underlying net book value, net of accumulated amortization of $0 and $2,647, respectively. 230 (12,808 ) Carrying value of investments in unconsolidated entities $ 188,135 $ 180,764 Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Revenues $ 15,087 $ 15,543 $ 44,951 $ 49,307 Expenses: Interest expense and loan cost amortization 3,434 3,505 10,240 10,032 Depreciation and amortization 5,124 6,234 16,401 18,848 Operating expenses, ground rent and general and administrative expenses 4,766 5,193 15,774 17,463 Provision for asset impairment 1,405 — 3,673 — Total expenses 14,729 14,932 46,088 46,343 Net income (loss) before gain (loss) on sale of real estate 358 611 (1,137 ) 2,964 Gain (loss) on sale of real estate 13 — (3,892 ) — Net income (loss) $ 371 $ 611 $ (5,029 ) $ 2,964 Company's share of net income (loss), net of excess basis depreciation of $0, $130, $0 and $390, respectively $ (93 ) $ 648 $ (3,069 ) $ 1,895 Distributions from unconsolidated entities in excess of the investments' carrying value 50 — 274 — Equity in (losses) earnings of unconsolidated entities $ (43 ) $ 648 $ (2,795 ) $ 1,895
Contractual Obligation, Fiscal Year Maturity Schedule	he following table shows the scheduled maturities of IAGM's mortgages payable as of September 30, 2018 for the remainder of 2018, each of the next four years, and thereafter. Maturities during the year ending December 31, 2018 2019 2020 2021 2022 Thereafter Total Mortgages payable $ 188,925 31,353 — 23,150 — 68,805 $ 312,233

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Notes and Loans Payable [Abstract]
Schedule of Outstanding Debt	As of September 30, 2018 and December 31, 2017, the Company had the following mortgages payable outstanding: September 30, 2018 December 31, 2017 Mortgages payable (a) $ 240,351 $ 370,804 Premium, net of accumulated amortization 299 478 Discount, net of accumulated amortization (167 ) (195 ) Debt issuance costs, net of accumulated amortization (1,219 ) (1,611 ) Total mortgages payable, net $ 239,264 $ 369,476 (a) Mortgages payable had fixed interest rates (for both conforming loans and loans in default) ranging from 3.49% to 5.49% , with a weighted average interest rate of 4.37% as of September 30, 2018 , and 3.49% to 10.45% with a weighted average interest rate of 5.13% , as of December 31, 2017 . As of September 30, 2018 and December 31, 2017, the Company had the following borrowings outstanding under its term loan credit facility and line of credit: September 30, 2018 December 31, 2017 Aggregate Principal Balance Interest Rate Aggregate Interest Rate Maturity Date 5 year - swapped to fixed rate (a) $ 90,000 2.6510% $ 90,000 2.6510% January 15, 2021 5 year - swapped to fixed rate (b) 60,000 2.6525% 60,000 2.6525% January 15, 2021 5 year - variable rate (c) 50,000 3.4038% 50,000 2.6607% January 15, 2021 7 year - variable rate (d) 100,000 3.7038% 100,000 2.9607% November 5, 2022 Total unsecured term loans 300,000 300,000 Issuance costs, net of accumulated amortization (1,270 ) (1,615 ) Total unsecured term loans, net of amortized issuance costs $ 298,730 $ 298,385 Unsecured revolving line of credit - variable rate (e) 52,000 3.5211% — n/a February 2, 2019 Total outstanding credit agreements, net $ 350,730 (a) The Company swapped $90,000 of variable rate debt at an interest rate of 1-Month LIBOR plus 1.3% to a fixed rate of 2.6510% . The swap has an effective date of December 10, 2015, a termination date of December 1, 2019, and a notional amount of $90,000 . (b) The Company swapped $60,000 of variable rate debt at an interest rate of 1-Month LIBOR plus 1.3% to a fixed rate of 2.6525% . The swap has an effective date of December 10, 2015, a termination date of December 1, 2019, and a notional amount of $60,000 . (c) Interest rate reflects 1-Month LIBOR plus 1.3% as of September 30, 2018 and December 31, 2017. (d) Interest rate reflects 1-Month LIBOR plus 1.6% as of September 30, 2018 and December 31, 2017. (e) Interest rate reflects 1-Month LIBOR plus 1.4% as of September 30, 2018 .
Schedule Of Maturities For Outstanding Mortgage Indebtedness	The following table shows the scheduled maturities of the Company's mortgages payable as of September 30, 2018 for the remainder of 2018, each of the next four years, and thereafter. Maturities during the year ending December 31, 2018 2019 2020 2021 2022 Thereafter Total Mortgages payable $ 7,575 $ — $ 41,000 $ 12,627 $ 50,982 $ 128,167 $ 240,351

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Quantitative Disclosure of The Fair Value For Each Major Category Of Assets And Liabilities	For assets and liabilities measured at fair value on a recurring basis, quantitative disclosure of the fair value for each major category of assets and liabilities is presented below: Fair Value Measurements at September 30, 2018 Assets Level 1 Level 2 Level 3 Marketable equity securities $ 1,078 $ — $ — Real estate related bonds — 307 — Derivative interest rate swaps — 2,295 — Total assets $ 1,078 $ 2,602 $ — Fair Value Measurements at December 31, 2017 Assets Level 1 Level 2 Level 3 Available-for-sale marketable securities $ 4,431 $ — $ — Real estate related bonds — 327 — Derivative interest rate swaps — 1,670 — Total assets $ 4,431 $ 1,997 $ —
Assets Measured at Fair Value on Non-Recurring Basis	The following table summarizes activity for the Company’s assets measured at fair value on a nonrecurring basis and the related impairment charges for the three and nine months ended September 30, 2018 and 2017 : For the three months ended September 30, For the nine months ended September 30, 2018 2017 2018 2017 Level 3 Impairment Losses Level 3 Impairment Losses Level 3 Impairment Losses Level 3 Impairment Losses Investment properties $ 33,075 $ 2,713 $ — $ — $ 64,075 $ 3,510 $ 36,676 $ 16,440
Fair Value of Financial Instruments Presented at Carrying Values	The table below represents the fair value of financial instruments presented at carrying values in the Company's condensed consolidated financial statements as of September 30, 2018 and December 31, 2017 . September 30, 2018 December 31, 2017 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Mortgages payable $ 240,351 $ 236,433 $ 370,804 $ 372,962 Unsecured term loans and revolving line of credit $ 352,000 $ 352,276 $ 300,000 $ 299,770

Earnings per Share and Equity_2

Earnings per Share and Equity Transactions (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following summarizes the calculation of basic and diluted earnings per share: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 Numerator: Net income from continuing operations $ 8,947 $ 12,244 $ 66,342 $ 49,609 Net income from discontinued operations — 9,721 — 8,372 Net income $ 8,947 $ 21,965 $ 66,342 $ 57,981 Denominator: Weighted average shares outstanding, basic and diluted 768,385,770 773,517,492 772,341,263 773,405,710 Net income from continuing operations allocated to common stockholders per share $ 0.01 $ 0.02 $ 0.09 $ 0.06 Net income from discontinued operations allocated to common stockholders per share $ — $ 0.01 $ — $ 0.01 Net income per common share, basic and diluted $ 0.01 $ 0.03 $ 0.09 $ 0.07

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	A summary of the Company's restricted stock unit activity for the nine months ended September 30, 2018 is as follows: Unvested Restricted Stock Units Weighted Average Grant Date Price Per Share (a) Outstanding as of January 1, 2018 1,535,505 $3.19 Shares granted 1,892,903 $3.14 Shares vested (190,117 ) $3.28 Shares forfeited (427,970 ) $3.20 Outstanding at September 30, 2018 2,810,321 $3.16 (a) On an annual basis, the Company engages an independent third-party valuation advisory consulting firm to estimate the per share value of the Company's common stock on a fully diluted basis.

Subsequent Events Sub (Tables)

Subsequent Events Sub (Tables)	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Disposal Groups, Including Discontinued Operations	Three months ended September 30, 2017 Nine months ended September 30, 2017 Total income $ 844 $ 3,855 Less: Depreciation and amortization expense 301 1,205 General and administrative, property operating, and real estate tax expenses 492 2,398 Operating income from discontinued operations 51 252 Interest expense, income taxes, and other miscellaneous expenses (443 ) (1,993 ) Gain on sale of properties, net 10,115 10,115 Loss on extinguishment of debt (2 ) (2 ) Net income from discontinued operations $ 9,721 $ 8,372 Net income per common share, from discontinued operations, basic and diluted $ 0.01 $ 0.01 Weighted average number of common shares outstanding, basic and diluted 773,517,492 773,405,710 The Company has disposed of the following power center retail properties subsequent to September 30, 2018: Date Property MSA Square Feet Gross Disposition Price October 5, 2018 McKinney Town Center Dallas-Fort Worth-Arlington, TX 243,000 $ 51,000 October 5, 2018 Riverstone Houston-The Woodlands-Sugar Land, TX 273,000 27,750 October 23, 2018 Hiram Pavilion Atlanta–Sandy Springs–Roswell, GA 363,000 44,350 879,000 $ 123,100

Organization (Details)

Organization (Details)	9 Months Ended
	Sep. 30, 2018joint_venturePropertiesAssets	Sep. 30, 2017joint_venturePropertiesAssets
Entity Information [Line Items]
Number of operating real estate joint ventures | joint_venture	2	2
Corporate Joint Venture
Entity Information [Line Items]
Number of retail properties | joint_venture	1	1
Number of managed assets | Assets	14	15
Retail
Entity Information [Line Items]
Number of retail properties | Properties	63	70
Retail | Consolidated Properties
Entity Information [Line Items]
Number of retail properties | Properties	2

Basis of Presentation and Rec_3

Basis of Presentation and Recently Issued Accounting Pronouncements (Details) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net change in net cash used in investing activities			$ (71,402)	$ 256,683
Accounting Standards Update 2016-18
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net change in net cash used in investing activities				4,092
Restricted cash						$ 6,650
Distributions in excess of accumulated net income | Accounting Standards Update 2017-05
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to retained earnings					$ 12,756
Distributions in excess of accumulated net income | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease asset			3,000
Lease liability			$ 3,000
Distributions in excess of accumulated net income | Accounting Standards Update 2016-02 | Discount Rate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fair value inputs, discount rate (percent)			0.044
Restatement Adjustment | Accounting Standards Update 2016-18
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net change in net cash used in investing activities				(6,650)
Restatement Adjustment | Accounting Standards Update 2017-05
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to retained earnings					12,756
Restatement Adjustment | General and Administrative Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of non-recoverable payroll		$ (1,019)		(2,846)
Restatement Adjustment | Property Operating Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of non-recoverable payroll		$ 912		$ 1,827
Restatement Adjustment | Distributions in excess of accumulated net income | Accounting Standards Update 2017-05
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to retained earnings	[1]				$ 12,756
[1]	See Note 2. Recently Issued Accounting Pronouncements Adopted.

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Receivables	$ 683		$ 683		$ 515
Property management fees
Disaggregation of Revenue [Line Items]
Income	631	$ 671	1,996	$ 2,126
Asset management fees
Disaggregation of Revenue [Line Items]
Income	269	303	831	910
Leasing commissions and other fees
Disaggregation of Revenue [Line Items]
Income	65	44	138	176
Other fee income
Disaggregation of Revenue [Line Items]
Income	$ 965	$ 1,018	$ 2,965	$ 3,212

Acquired Properties - Summary o

Acquired Properties - Summary of Retail Properties Acquired (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)VIEft²	Sep. 30, 2017USD ($)ft²	Sep. 30, 2018USD ($)VIEft²	Sep. 30, 2017USD ($)ft²
Real Estate Properties [Line Items]
Gross Acquisition Price			$ 159,800	$ 633,425
Square feet | ft²	250,000		250,000
Assumption of mortgage debt upon acquisition of investment property			$ 0	41,717
Capitalized acquisition costs	$ 60	$ 524	$ 260	1,692
Retail
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 633,425
Square feet | ft²		1,690,000,000		1,690,000,000
Retail | PGA Plaza, Miami-Fort Lauderdale-West Palm Beach, FL
Real Estate Properties [Line Items]
Number of VIEs used to facilitate acquisition | VIE	2		2
Gross Acquisition Price			$ 88,000
Square feet | ft²	120,000		120,000
Retail | Kennesaw Marketplace, Atlanta-Sandy Springs-Roswell, GA
Real Estate Properties [Line Items]
Gross Acquisition Price			$ 64,300
Square feet | ft²	117,000		117,000
Retail | Kennesaw Marketplace, Atlanta-Sandy Springs-Roswell, GA, Phase III
Real Estate Properties [Line Items]
Gross Acquisition Price			$ 7,500
Square feet | ft²	13,000		13,000
Retail | Campus Marketplace, San Marcos, CA
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 73,350
Square feet | ft²		144,000,000		144,000,000
Retail | Paraiso Parc and Westfork Plaza, Pembroke Pines, FL
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 163,000
Square feet | ft²		393,000,000		393,000,000
Retail | The Shops at Town Center, Germantown, MD
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 53,550
Square feet | ft²		125,000,000		125,000,000
Retail | Cary Park Town Center, Cary, NC
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 25,000
Square feet | ft²		93,000,000		93,000,000
Retail | The Parke, Cedar Park, TX
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 112,250
Square feet | ft²		364,000,000		364,000,000
Retail | The Plaza Midtown, Atlanta, GA
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 31,800
Square feet | ft²		70,000,000		70,000,000
Retail | River Oaks, Santa Clarita, CA
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 115,000
Square feet | ft²		275,000,000		275,000,000
Retail | Kyle Marketplace, Kyle, TX
Real Estate Properties [Line Items]
Gross Acquisition Price				$ 59,475
Square feet | ft²		226,000,000		226,000,000

Acquired Properties - Estimated

Acquired Properties - Estimated Fair Value of Retail Properties Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017
Business Combinations [Abstract]
Land	$ 23,001	$ 125,990
Building and other improvements	127,216	440,204
Total investment properties	150,217	566,194
Intangible assets	14,054	69,306
Intangible liabilities	(5,119)	(19,099)
Net other assets and liabilities	648	17,024
Total fair value of assets acquired and liabilities assumed	$ 159,800	$ 633,425

Disposed Properties - Schedule

Disposed Properties - Schedule of Disposal Groups (Details) $ in Thousands	Jun. 26, 2018USD ($)	Mar. 21, 2018USD ($)	Apr. 17, 2017USD ($)	Sep. 30, 2018USD ($)ft²	Sep. 30, 2017USD ($)ft²	Sep. 30, 2018USD ($)ft²	Sep. 30, 2017USD ($)ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross Disposition Price						$ 282,950	$ 206,130
Gain (Loss) on Extinguishment of Debt (d)				$ 4	$ 42	$ (10,693)	$ (840)
Retail
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				2,232,000	1,250,000	2,232,000	1,250,000
Gross Disposition Price						$ 282,950	$ 152,630
Gain (Loss) on Sale of Investment Properties, net						51,741	21,634
Gain (Loss) on Extinguishment of Debt (d)						(10,697)	$ (840)
Retail | Additional Loan
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Extinguishment of Debt (d)						$ 4
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Sherman Town Center I & II
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				485,000		485,000
Gross Disposition Price						$ 63,000
Gain (Loss) on Sale of Investment Properties, net						12,382
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Grafton Commons
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				239,000		239,000
Gross Disposition Price						$ 33,500
Gain (Loss) on Sale of Investment Properties, net						6,564
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Lakeport Commons
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				283,000		283,000
Gross Disposition Price						$ 31,000
Gain (Loss) on Sale of Investment Properties, net						(666)
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Market at Morse/Hamilton
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				45,000		45,000
Gross Disposition Price						$ 10,000
Gain (Loss) on Sale of Investment Properties, net						1,592
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Siegen Plaza
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				156,000		156,000
Gross Disposition Price						$ 29,000
Gain (Loss) on Sale of Investment Properties, net						3,849
Gain (Loss) on Extinguishment of Debt (d)						$ 54
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Tomball Town Center
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				67,000		67,000
Gross Disposition Price						$ 22,750
Gain (Loss) on Sale of Investment Properties, net						7,184
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Parkway Centre North
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				143,000		143,000
Gross Disposition Price						$ 23,700
Gain (Loss) on Sale of Investment Properties, net						5,357
Gain (Loss) on Extinguishment of Debt (d)						$ 1,695
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Penn Park
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					242,000		242,000
Gross Disposition Price							$ 29,050
Gain (Loss) on Sale of Investment Properties, net							1,021
Gain (Loss) on Extinguishment of Debt (d)							$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Sparks Crossing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					336,000		336,000
Gross Disposition Price							$ 40,280
Gain (Loss) on Sale of Investment Properties, net							10,584
Gain (Loss) on Extinguishment of Debt (d)							$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Lincoln Village
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					164,000		164,000
Gross Disposition Price							$ 30,000
Gain (Loss) on Sale of Investment Properties, net							2,355
Gain (Loss) on Extinguishment of Debt (d)							$ 0
Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Tulsa Hills
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				473,000		473,000
Gross Disposition Price						$ 70,000
Gain (Loss) on Sale of Investment Properties, net						13,476
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Transfer | Stonecrest Marketplace
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				265,000		265,000
Gross Disposition Price						$ 0
Gain (Loss) on Sale of Investment Properties, net						1,777
Gain (Loss) on Extinguishment of Debt (d)						$ (10,752)
Carrying value, surrendered properties		$ 23,932
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Transfer | Bellerive Plaza
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				76,000		76,000
Gross Disposition Price						$ 0
Gain (Loss) on Sale of Investment Properties, net				$ (22)		(22)
Gain (Loss) on Extinguishment of Debt (d)						$ (1,694)
Carrying value, surrendered properties	$ 4,771
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Transfer | Intech Retail
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					19,000		19,000
Gross Disposition Price							$ 0
Gain (Loss) on Sale of Investment Properties, net					$ (53)		(53)
Gain (Loss) on Extinguishment of Debt (d)							$ (882)
Carrying value, surrendered properties			$ 2,338
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Condemnation | Northwest Marketplace
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²				0		0
Gross Disposition Price						$ 0
Gain (Loss) on Sale of Investment Properties, net						248
Gain (Loss) on Extinguishment of Debt (d)						$ 0
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Condemnation | Market at Westlake
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					0		0
Gross Disposition Price							$ 0
Gain (Loss) on Sale of Investment Properties, net							474
Gain (Loss) on Extinguishment of Debt (d)							$ 0
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Condemnation | Pavilions at Hartman Heritage
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					223,000		223,000
Gross Disposition Price							$ 21,700
Gain (Loss) on Sale of Investment Properties, net							(1,708)
Gain (Loss) on Extinguishment of Debt (d)							$ 0
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Condemnation | Legacy Crossing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					134,000		134,000
Gross Disposition Price							$ 10,250
Gain (Loss) on Sale of Investment Properties, net							(211)
Gain (Loss) on Extinguishment of Debt (d)							$ 1
Retail | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Condemnation | Heritage Plaza
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Square Feet | ft²					132,000		132,000
Gross Disposition Price							$ 21,350
Gain (Loss) on Sale of Investment Properties, net							9,172
Gain (Loss) on Extinguishment of Debt (d)							$ 41

Disposed Properties - Narrative

Disposed Properties - Narrative (Details) - USD ($) $ in Thousands	Aug. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Proceeds from sale and transfer of investment properties, net		$ 254,424	$ 197,843
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross disposition price		$ 282,950	$ 206,130
Worldgate Plaza | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross disposition price	$ 53,500

Disposed Properties - Schedul_2

Disposed Properties - Schedule of Discontinued Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Total income		$ 844		$ 3,855
Depreciation and amortization expense		301		1,205
General and administrative, property operating, and real estate tax expenses		492		2,398
Operating income from discontinued operations		51		252
Interest expense, income taxes, and other miscellaneous expenses		(443)		(1,993)
Gain on sale of properties, net		10,115		10,115
Loss on extinguishment of debt		(2)		(2)
Net income from discontinued operations	$ 0	$ 9,721	$ 0	$ 8,372
Net income per common share, from discontinued operations, basic and diluted (in dollars per share)	$ 0	$ 0.01	$ 0	$ 0.01
Weighted average number of common shares outstanding, basic and diluted (in shares)	768,385,770	773,517,492	772,341,263	773,405,710

Investment in Consolidated an_3

Investment in Consolidated and Unconsolidated Entities - Narrative (Details) $ in Thousands	Apr. 17, 2013USD ($)	Sep. 30, 2018USD ($)ft²Property	Sep. 30, 2017USD ($)ft²	Sep. 30, 2018USD ($)ft²Property	Sep. 30, 2017USD ($)ft²Property	Dec. 31, 2017USD ($)	Dec. 31, 2013Properties
Variable Interest Entity [Line Items]
Fair value of parking garage		$ 150,217	$ 566,194	$ 150,217	$ 566,194
Land		23,001	125,990	23,001	125,990
Building and other improvements		127,216	440,204	127,216	440,204
Proceeds from sale and transfer of investment properties, net				254,424	197,843
Provision for asset impairment		$ 1,405	$ 0	$ 3,673	$ 0
Number of properties impaired | Property		2		3	3
Carrying value of investment		$ 188,135		$ 188,135		$ 180,764
Gross disposition price				282,950	$ 206,130
Provision for asset impairment				3,510	$ 16,440
IAGM Retail Fund I, LLC
Variable Interest Entity [Line Items]
Carrying value of investment		$ 128,286		$ 128,286		$ 123,693
Retail
Variable Interest Entity [Line Items]
Square Feet | ft²		2,232,000	1,250,000	2,232,000	1,250,000
Gross disposition price				$ 282,950	$ 152,630
Bryant Square | IAGM Retail Fund I, LLC
Variable Interest Entity [Line Items]
Proceeds from sale and transfer of investment properties, net				2,148
Provision for asset impairment		$ 773		2,020
Bryant Square | Retail | IAGM Retail Fund I, LLC
Variable Interest Entity [Line Items]
Proceeds from sale and transfer of investment properties, net				$ 3,905
Number of properties impaired | Property				1
Unconsolidated Entities | IAGM Retail Fund I, LLC
Variable Interest Entity [Line Items]
Number of retail properties contributed | Properties							14
Proceeds from sale and transfer of investment properties, net	$ 15,625
Equity investment basis adjustment, amortization period						30 years
Deferred gain on sale of property						$ 12,756
Provision for asset impairment		$ 1,405		$ 3,673
Number of properties impaired | Property		1		3
PGA Plaza and Kennesaw Marketplace [Member]
Variable Interest Entity [Line Items]
Loan advanced to VIE		$ 152,300

Investment in Consolidated an_4

Investment in Consolidated and Unconsolidated Entities - Schedule of Consolidated Variable interest Entities (Details) $ in Thousands	Sep. 30, 2018USD ($)
Variable Interest Entity [Line Items]
Total assets	$ 156,554
Other liabilities	(6,614)
Net assets	149,940
Net investment properties
Variable Interest Entity [Line Items]
Total assets	142,329
Other assets
Variable Interest Entity [Line Items]
Total assets	$ 14,225

Investment in Consolidated an_5

Investment in Consolidated and Unconsolidated Entities - Net Equity Investment and Share of Net Income (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of net equity investment and share of net income or loss
Carrying value of investment	$ 188,135	$ 180,764
IAGM Retail Fund I, LLC
Schedule of net equity investment and share of net income or loss
Ownership %	55.00%
Carrying value of investment	$ 128,286	123,693
Downtown Railyard Venture, LLC
Schedule of net equity investment and share of net income or loss
Ownership %	90.00%
Carrying value of investment	$ 59,961	57,183
Other unconsolidated entities
Schedule of net equity investment and share of net income or loss
Carrying value of investment	$ (112)	$ (112)

Investment in Consolidated an_6

Investment in Consolidated and Unconsolidated Entities - Schedule Investment in Unconsolidated Entities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Assets
Real estate assets, net of accumulated depreciation	$ 545,014		$ 545,014		$ 586,671
Other assets	99,630		99,630		73,423
Total assets	644,644		644,644		660,094
Liabilities and Equity
Debt, net	311,699		311,699		311,574
Other liabilities	45,858		45,858		49,032
Equity	287,087		287,087		299,488
Total liabilities and equity	644,644		644,644		660,094
Company's share of equity	187,905		187,905		193,572
Cost of investments in excess of the Company's share of underlying net book value, net of accumulated amortization of $0 and $2,647, respectively.	230		230		(12,808)
Investment in unconsolidated entities	188,135		188,135		$ 180,764
Statements of Operations:
Revenues	15,087	$ 15,543	44,951	$ 49,307
Expenses
Interest expense and loan cost amortization	3,434	3,505	10,240	10,032
Depreciation and amortization	5,124	6,234	16,401	18,848
Operating expenses, ground rent and general and administrative expenses	4,766	5,193	15,774	17,463
Provision for asset impairment	1,405	0	3,673	0
Total expenses	14,729	14,932	46,088	46,343
Net income (loss) before gain (loss) on sale of real estate	358	611	(1,137)	2,964
Gain (loss) on sale of real estate	13	0	(3,892)	0
Net income (loss)	371	611	(5,029)	2,964
Company's share of net income (loss), net of excess basis depreciation of $0, $130, $0 and $390, respectively	(93)	648	(3,069)	1,895
Distributions from unconsolidated entities in excess of the investments' carrying value	50	0	274	0
Equity in (losses) earnings of unconsolidated entities	(43)	648	(2,795)	1,895
Equity method investment, accumulated depreciation	0	2,647	0	2,647
Depreciation	$ 0	$ 130	$ 0	$ 260

Investment in Consolidated an_7

Investment in Consolidated and Unconsolidated Entities - Unconsolidated Entities (Details) $ in Thousands	Oct. 05, 2018USD ($)Properties	Nov. 02, 2018USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Schedule of Debt Maturities of the Unconsolidated Entities
Mortgage debt			$ 311,699	$ 311,574
IAGM Retail Fund I, LLC
Schedule of Debt Maturities of the Unconsolidated Entities
2,018			188,925
2,019			31,353
2,020			0
2,021			23,150
2,022			0
Thereafter			68,805
Mortgage debt			312,233
Mortgages payable | IAGM Retail Fund I, LLC
Schedule of Debt Maturities of the Unconsolidated Entities
Loans payable			15,103
Recourse debt			$ 23,000
Subsequent Event | Mortgages payable | IAGM Retail Fund I, LLC
Schedule of Debt Maturities of the Unconsolidated Entities
Debt extinguished	$ 38,300
Number of retail properties | Properties	2
Subsequent Event | Senior Secured Term Loan | IAGM Retail Fund I, LLC
Schedule of Debt Maturities of the Unconsolidated Entities
Debt facility		$ 152,000

Debt - Mortgages Payable (Detai

Debt - Mortgages Payable (Details) - Mortgages payable - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Mortgages payable	$ 240,351	$ 370,804
Premium, net of accumulated amortization	299	478
Discount, net of accumulated amortization	(167)	(195)
Debt issuance costs, net of accumulated amortization	(1,219)	(1,611)
Total mortgages payable, net	$ 239,264	$ 369,476
Weighted average interest rate (percent)	4.37%	5.13%
Minimum
Debt Instrument [Line Items]
Fixed interest rate (percent)	3.49%	3.49%
Maximum
Debt Instrument [Line Items]
Fixed interest rate (percent)	5.49%	10.45%

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Nov. 05, 2015	Nov. 04, 2015	Feb. 03, 2015	Feb. 02, 2015
Debt Instrument [Line Items]
Debt, net	$ 589,994,000	$ 667,861,000
Outstanding credit agreements	350,730,000
Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 600,000,000	$ 300,000,000
The Company
Debt Instrument [Line Items]
Recourse debt	3,000,000
Mortgages payable
Debt Instrument [Line Items]
Mortgages payable, net	239,264,000	369,476,000
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility
Debt Instrument [Line Items]
Long-term line of credit	300,000,000	300,000,000
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche
Debt Instrument [Line Items]
Long-term line of credit	$ 50,000,000	$ 50,000,000
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche | One-month LIBOR
Debt Instrument [Line Items]
Basis spread on variable interest rate (percent)	1.30%	1.30%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 7-Year Tranche
Debt Instrument [Line Items]
Long-term line of credit	$ 100,000,000	$ 100,000,000
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 7-Year Tranche | One-month LIBOR
Debt Instrument [Line Items]
Basis spread on variable interest rate (percent)	1.60%	1.60%
Revolving Credit Facility | KeyBanc Capital Markets and J.P. Morgan Securities LLC Amended and Restated
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 600,000,000	$ 300,000,000
Short-term debt	$ 52,000,000
Line of credit facility, remaining borrowing capacity	$ 248,000,000
Extension option on line of credit, period	1 year
Commitment fee	0.15%
Revolving Credit Facility | KeyBanc Capital Markets and J.P. Morgan Securities LLC Amended and Restated | One-month LIBOR
Debt Instrument [Line Items]
Basis spread on variable interest rate (percent)	1.40%

Debt - Mortgage Maturities (Det

Debt - Mortgage Maturities (Details) - Mortgages payable - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of maturities for outstanding mortgage indebtedness
2,018	$ 7,575
2,019	0
2,020	41,000
2,021	12,627
2,022	50,982
Thereafter	128,167
Total	$ 240,351	$ 370,804

Debt - Line of Credit (Details)

Debt - Line of Credit (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Total outstanding credit agreements, net	$ 350,730
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility
Line of Credit Facility [Line Items]
Unsecured term loan credit facility	300,000	$ 300,000
Issuance costs, net of accumulated amortization	(1,270)	(1,615)
Total, unsecured term loan credit facilities, net	298,730	298,385
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche
Line of Credit Facility [Line Items]
Unsecured term loan credit facility	$ 50,000	$ 50,000
Interest rate (percent)	3.4038%	2.6607%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche | One-month LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable interest rate (percent)	1.30%	1.30%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche | Interest Rate Swap One
Line of Credit Facility [Line Items]
Unsecured term loan credit facility	$ 90,000	$ 90,000
Interest rate (percent)	2.651%	2.651%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche | Interest Rate Swap One | One-month LIBOR
Line of Credit Facility [Line Items]
Derivative, basis spread on variable rate (percent)	1.30%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche | Interest Rate Swap Two
Line of Credit Facility [Line Items]
Unsecured term loan credit facility	$ 60,000	$ 60,000
Interest rate (percent)	2.6525%	2.6525%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 5-Year Tranche | Interest Rate Swap Two | One-month LIBOR
Line of Credit Facility [Line Items]
Derivative, basis spread on variable rate (percent)	1.30%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 7-Year Tranche
Line of Credit Facility [Line Items]
Unsecured term loan credit facility	$ 100,000	$ 100,000
Interest rate (percent)	3.7038%	2.9607%
Revolving Credit Facility | Wells Fargo, Merrill Lynch, Pierce Fenner & Smith, PNC Capital Markets Credit Facility | 7-Year Tranche | One-month LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable interest rate (percent)	1.60%	1.60%
Revolving Credit Facility | KeyBanc Capital Markets and J.P. Morgan Securities LLC Amended and Restated
Line of Credit Facility [Line Items]
Unsecured revolving line of credit - variable rate	$ 52,000
Interest rate (percent)	3.52106%
Revolving Credit Facility | KeyBanc Capital Markets and J.P. Morgan Securities LLC Amended and Restated | One-month LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable interest rate (percent)	1.40%

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Disclosure of The Fair Value For Each Major Category Of Assets And Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Level 2 | Interest Rate Swap
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis
Notional value of outstanding interest rate swaps	$ 150,000	$ 150,000
Recurring | Level 1
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis
Marketable equity securities	1,078	4,431
Real estate related bonds	0	0
Derivative interest rate swaps	0	0
Total assets	1,078	4,431
Recurring | Level 2
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis
Marketable equity securities	0	0
Real estate related bonds	307	327
Derivative interest rate swaps	2,295	1,670
Total assets	2,602	1,997
Recurring | Level 3
Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis
Marketable equity securities	0	0
Real estate related bonds	0	0
Derivative interest rate swaps	0	0
Total assets	$ 0	$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Non-Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Impairment Losses
Investment properties	$ 2,713	$ 0	$ 3,510	$ 16,440
Nonrecurring
Impairment Losses
Investment properties	2,713	0	3,510	16,440
Nonrecurring | Level 3
Impairment Losses
Investment properties	$ 33,075	$ 0	$ 64,075	$ 36,676

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Financial Instruments Presented at Carrying Values (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Carrying Value
Debt Instrument [Line Items]
Mortgages payable	$ 240,351	$ 370,804
Unsecured term loans and revolving line of credit	352,000	300,000
Estimated Fair Value
Debt Instrument [Line Items]
Mortgages payable	236,433	372,962
Unsecured term loans and revolving line of credit	$ 352,276	$ 299,770

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Property	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)Property	Sep. 30, 2017USD ($)Property	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of properties impaired | Property	2		3	3
Provision for asset impairment	$ 2,713	$ 0	$ 3,510	$ 16,440
Mortgages payable | Weighted Average Effective Market Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value measurement input	0.0471		0.0471		0.0420
Line of Credit | Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value measurement input	0.0408		0.0408		0.0348
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Provision for asset impairment	$ 2,713	$ 0	$ 3,510	$ 16,440

Earnings per Share and Equity_3

Earnings per Share and Equity Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Income (Loss) Allocated to Common Stockholders [Abstract]
Net income from continuing operations	$ 8,947	$ 12,244	$ 66,342	$ 49,609
Net income from discontinued operations	0	9,721	0	8,372
Net income	$ 8,947	$ 21,965	$ 66,342	$ 57,981
Weighted average shares outstanding, basic and diluted (in shares)	768,385,770	773,517,492	772,341,263	773,405,710
Income from continuing operations allocated to common shareholders per share (in dollars per share)	$ 0.01	$ 0.02	$ 0.09	$ 0.06
Income from discontinued operations allocated to common shareholders per share (in dollars per share)	0	0.01	0	0.01
Net income per common share, basic and diluted (in dollars per share)	$ 0.01	$ 0.03	$ 0.09	$ 0.07

Earnings per Share and Equity_4

Earnings per Share and Equity Transactions - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 15, 2018	Sep. 30, 2018	Dec. 31, 2017
Equity, Class of Treasury Stock [Line Items]
Common stock, par value (in dollars per share)		$ 0.001	$ 0.001
Repurchase of common stock		$ (99,231)
Dutch Auction
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program amount authorized	$ 75,000
Common stock, par value (in dollars per share)	$ 0.001
Percent increase in shares authorized for repurchase	2.00%
Increase in shares authorized for repurchase	10,706,774
Increase in authorized stock repurchase amount	$ 22,500
Shares acquired	46,503,539
Average cost paid per share (in usd per share)	$ 2.10
Shares repurchased as a percentage of outstanding shares	6.00%

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense not yet recognized	$ 5,753		$ 5,753
Stock-based compensation expense recognized	$ 1,103	$ 1,616	$ 3,187	$ 4,325
Unvested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested shares (in shares)	2,810,321		2,810,321		1,535,505
2015 Incentive Award Plan approved on June 19, 2015 | 2015 Incentive Award Plan | Unvested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	30,000,000		30,000,000
Shares available for future issuance (in shares)	23,523,614		23,523,614

Stock-Based Compensation - Rest

Stock-Based Compensation - Restricted Stock Units Award Activity (Details) - Unvested Restricted Stock Units	9 Months Ended
	Sep. 30, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares) | shares	1,535,505
Restricted shares granted (shares) | shares	1,892,903
Restricted shares vested (shares) | shares	(190,117)
Restricted shares forfeited (shares) | shares	(427,970)
Outstanding at end of year (in shares) | shares	2,810,321
Weighted Average Grant Date Price Per Share
Weighted Average Price at Grant, Beginning of year (in dollars per share) | $ / shares	$ 3.16
Weighted Average Price at Grant, Restricted shares granted (in dollars per share) | $ / shares	3.14
Weighted Average Price at Grant, Restricted shares vested (in dollars per share) | $ / shares	3.28
Weighted Average Price at Grant, Restricted shares forfeited (in dollars per share) | $ / shares	3.20
Weighted Average Price at Grant, End of year (in dollars per share) | $ / shares	$ 3.19

Commitments and Contingencies (

Commitments and Contingencies (Details)	Sep. 30, 2018USD ($)
University House Communities Group, Inc
Loss Contingencies [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 5,000,000

Subsequent Events - (Details)

Subsequent Events - (Details) $ in Thousands	Nov. 06, 2018USD ($)ft²	Nov. 05, 2018USD ($)	Nov. 02, 2018USD ($)	Oct. 23, 2018USD ($)ft²	Oct. 05, 2018USD ($)ft²Properties	Sep. 30, 2018USD ($)ft²	Sep. 30, 2017USD ($)ft²
Subsequent Event [Line Items]
Gross disposition price						$ 282,950	$ 206,130
Retail
Subsequent Event [Line Items]
Square Feet | ft²						2,232,000	1,250,000
Gross disposition price						$ 282,950	$ 152,630
Subsequent Event | Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Subsequent Event [Line Items]
Square Feet | ft²	879,000
Gross disposition price	$ 123,100
Subsequent Event | Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | McKinney Town Center
Subsequent Event [Line Items]
Square Feet | ft²					243,000
Gross disposition price					$ 51,000
Subsequent Event | Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Riverstone Shopping Center
Subsequent Event [Line Items]
Square Feet | ft²					273,000
Gross disposition price					$ 27,750
Subsequent Event | Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Victory Lakes Shopping Center
Subsequent Event [Line Items]
Square Feet | ft²					370,000
Gross disposition price					$ 53,000
Subsequent Event | Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Hiram Pavilion
Subsequent Event [Line Items]
Square Feet | ft²				363,000
Gross disposition price				$ 44,350
Subsequent Event | Mortgages payable | Woodlake Crossing
Subsequent Event [Line Items]
Debt extinguished		$ 7,575
Subsequent Event | IAGM Retail Fund I, LLC | Mortgages payable
Subsequent Event [Line Items]
Debt extinguished					$ 38,300
Number of retail properties | Properties					2
Subsequent Event | IAGM Retail Fund I, LLC | Senior Secured Term Loan
Subsequent Event [Line Items]
Debt facility			$ 152,000
Extension fee			0.10%
Subsequent Event | IAGM Retail Fund I, LLC | Senior Secured Term Loan | One-month LIBOR
Subsequent Event [Line Items]
Basis spread on variable interest rate (percent)			1.55%