10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended: September 30, 2013

Or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission File Number 1-6249

WINTHROP REALTY TRUST

(Exact name of Registrant as specified in its certificate of incorporation)

Ohio	34-6513657
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification Number)
7 Bulfinch Place, Suite 500, Boston, Massachusetts	02114
(Address of principal executive offices)	(Zip Code)

(617) 570-4614

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities and Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for at least the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer	¨	Accelerated filer	x
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).    Yes  ¨    No  x

As of November 1, 2013 there were 36,408,018 Common Shares of Beneficial Interest outstanding.

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

(Unaudited)

INDEX

		Page
Part I.	Financial Information
Item 1.	Financial Statements (Unaudited):
	Consolidated Balance Sheets as of September 30, 2013 and December 31, 2012		3
	Consolidated Statements of Operations and Comprehensive Income for the Three and Nine Months Ended September 30, 2013 and September 30, 2012		4
	Consolidated Statements of Equity for the Nine Months Ended September 30, 2013 and September  30, 2012		5
	Consolidated Statements of Cash Flows for the Nine Months Ended September 30, 2013 and September  30, 2012		6
	Notes to Consolidated Financial Statements		8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		39
Item 3.	Quantitative and Qualitative Disclosure about Market Risk		58
Item 4.	Controls and Procedures		60
Part II.	Other Information
Item 6.	Exhibits		61
Signatures			62
Exhibit Index			63

2

Part 1. Financial Information

Item 1. Financial Statements (Unaudited)

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

CONSOLIDATED BALANCE SHEETS

(Unaudited, in thousands, except share and per share data)

	September 30, 2013			December 31, 2012
ASSETS
Investments in real estate, at cost
Land	$	56,894		$	43,252
Buildings and improvements		380,240			378,737
		437,134			421,989
Less: accumulated depreciation		(55,195	)		(51,553	)
Investments in real estate, net (variable interest entities $65,029 and $21,423, respectively)		381,939			370,436
Cash and cash equivalents		165,762			97,682
Restricted cash held in escrows (variable interest entities $6,637 and $1,101, respectively)		19,084			13,250
Loans receivable, net		108,163			211,250
Secured financing receivable		30,395			—
Accounts receivable, net of allowances of $478 and $374, respectively		997			1,418
Accrued rental income		19,205			17,241
Securities carried at fair value		7,074			19,694
Loan securities carried at fair value		226			11
Preferred equity investments		12,703			12,250
Equity investments		139,061			134,859
Lease intangibles, net (variable interest entities $20,059 and $3,485, respectively)		48,774			37,744
Deferred financing costs, net		4,546			4,864
Other assets		28,135			2,464
Assets held for sale		2,421			—
TOTAL ASSETS	$	968,485		$	923,163
LIABILITIES
Mortgage loans payable (variable interest entities $65,836 and $23,184, respectively)		308,049			280,576
Senior notes payable		86,250			86,250
Secured financings		29,150			52,920
Notes payable (variable interest entities $864 and $876, respectively)		1,664			1,676
Accounts payable, accrued liabilities and other liabilities		21,522			21,056
Related party fees payable		2,693			2,664
Dividends payable		8,804			5,366
Deferred income		995			1,136
Below market lease intangibles, net (variable interest entities $605 and $51, respectively)		2,280			2,255
TOTAL LIABILITIES		461,407			453,899
COMMITMENTS AND CONTINGENCIES
EQUITY
Winthrop Realty Trust Shareholders’ Equity:
Series D Cumulative Redeemable Preferred Shares, $25 per share liquidation preference, 5,060,000 shares authorized and 4,820,000 shares both issued and outstanding at September 30, 2013 and December 31, 2012		120,500			120,500
Common Shares of Beneficial Interest, $1 par, unlimited shares authorized; 36,397,949 and 33,018,711 both issued and outstanding at September 30, 2013 and December 31, 2012, respectively		35,798			33,019
Additional paid-in capital		646,620			618,426
Accumulated distributions in excess of net income		(308,661	)		(317,385	)
Accumulated other comprehensive loss		(70	)		(50	)
Total Winthrop Realty Trust Shareholders’ Equity		494,187			454,510
Non-controlling interests		12,891			14,754
Total Equity		507,078			469,264
TOTAL LIABILITIES AND EQUITY	$	968,485		$	923,163

See Notes to Consolidated Financial Statements.

3

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

(Unaudited, in thousands except per share data)

	Three Months Ended September 30 ,						Nine Months Ended September 30,
	2013			2012			2013			2012
Revenue
Rents and reimbursements	$	15,099		$	12,224		$	45,026		$	35,022
Interest, dividends and discount accretion		3,917			3,722			13,545			15,018
		19,016			15,946			58,571			50,040
Expenses
Property operating		5,272			3,335			14,697			10,643
Real estate taxes		1,705			1,160			4,184			3,116
Depreciation and amortization		4,923			4,416			14,703			11,623
Interest		5,435			4,416			18,175			11,560
General and administrative		1,113			782			3,058			2,447
Related party fees		2,309			2,316			6,866			6,641
Transaction costs		106			30			158			335
State and local taxes		85			64			227			211
		20,948			16,519			62,068			46,576
Other income (loss)
Equity in income of equity investments		13,856			12,809			26,249			14,051
Earnings from preferred equity investments		189			—			576			—
Realized gain (loss) on sale of securities carried at fair value		(31	)		—			(133	)		41
Unrealized gain (loss) on securities carried at fair value		—			3,113			(142	)		7,254
Unrealized gain on loan securities carried at fair value		—			371			215			447
Settlement expense		(16	)		—			(150	)		—
Interest income		101			242			286			433
		14,099			16,535			26,901			22,226
Income from continuing operations		12,167			15,962			23,404			25,690
Discontinued operations
(Loss) income from discontinued operations		(1,434	)		85			8,025			594
Net income		10,733			16,047			31,429			26,284
Net loss (income) attributable to non-controlling interest		995			(939	)		2,419			435
Net income attributable to Winthrop Realty Trust		11,728			15,108			33,848			26,719
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Amount allocated to Restricted Common Shares		(106	)		—			(235	)		—
Net income attributable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Per Common Share data - Basic
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Net income attributable to Winthrop Realty Trust	$	0.27		$	0.37		$	0.76		$	0.61
Per Common Share data - Diluted
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Net income attributable to Winthrop Realty Trust	$	0.27		$	0.37		$	0.76		$	0.61
Basic Weighted-Average Common Shares		33,076			33,075			33,047			33,064
Diluted Weighted-Average Common Shares		33,148			33,076			33,089			33,064
Comprehensive income
Net income	$	10,733		$	16,047		$	31,429		$	26,284
Change in unrealized loss on interest rate derivative		(150	)		(16	)		(20	)		(73	)
Consolidated comprehensive income		10,583			16,031			31,409			26,211
Net loss (income) attributable to non-controlling interest		995			(939	)		2,419			435
Other comprehensive income attributable to non-controlling interest		—			—			—			—
Comprehensive loss (income) attributable to non-controlling interest		995			(939	)		2,419			435
Comprehensive income attributable to Winthrop Realty Trust	$	11,578		$	15,092		$	33,828		$	26,646
Dividend declared per Common Share	$	0.1625		$	0.1625		$	0.4875		$	0.4875

See Notes to Consolidated Financial Statements.

4

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

CONSOLIDATED STATEMENTS OF EQUITY

(Unaudited, in thousands except per share data)

	Series D Preferred Shares of Beneficial Interest				Common Shares of Beneficial Interest				Additional Paid-In		Accumulated Distributions in Excess of			Accumulated Other Comprehensive			Non- Controlling
	Shares		Amount		Shares		Amount		Capital		Net Income			Income (loss)			Interests			Total
Balance, December 31, 2012		4,820	$	120,500		33,019	$	33,019	$	618,426	$	(317,385	)	$	(50	)	$	14,754		$	469,264
Net income attributable to Winthrop Realty Trust		—		—		—		—		—		33,848			—			—			33,848
Net loss attributable to non-controlling interests		—		—		—		—		—		—			—			(2,419	)		(2,419	)
Distributions to non-controlling interests		—		—		—		—		—		—			—			(52	)		(52	)
Contributions from non-controlling interests		—		—		—		—		—		—			—			861			861
Purchase of non-controlling interests		—		—		—		—		103		—			—			(253	)		(150	)
Dividends paid or accrued on Common Shares of Beneficial Interest ($0.4875 per share)		—		—		—		—		—		(16,553	)		—			—			(16,553	)
Dividends paid or accrued on Series D Preferred Shares ($1.7344 per share)		—		—		—		—		—		(8,360	)		—			—			(8,360	)
Dividends paid or accrued on restricted shares		—		—		—		—		—		(211	)		—			—			(211	)
Change in unrealized loss on interest rate derivatives		—		—		—		—		—		—			(20	)		—			(20	)
Stock issued pursuant to Dividend Reinvestment Plan		—		—		29		29		324		—			—			—			353
Net proceeds from common shares offering		—		—		2,750		2,750		27,210		—			—			—			29,960
Issuance of restricted shares		—		—		600		—		—		—			—			—			—
Amortization of restricted shares		—		—		—		—		557		—			—			—			557
Balance, September 30, 2013		4,820	$	120,500		36,398	$	35,798	$	646,620	$	(308,661	)	$	(70	)	$	12,891		$	507,078

	Series D Preferred Shares of Beneficial Interest				Common Shares of Beneficial Interest				Additional Paid-In			Accumulated Distributions in Excess of			Accumulated Other Comprehensive			Non- Controlling
	Shares		Amount		Shares		Amount		Capital			Net Income			Income (Loss)			Interests			Total
Balance, December 31, 2011		1,600	$	40,000		33,041	$	33,041	$	626,099		$	(311,246	)	$	(92	)	$	21,034		$	408,836
Net income attributable to Winthrop Realty Trust		—		—		—		—		—			26,719			—			—			26,719
Net loss attributable to non-controlling interests		—		—		—		—		—			—			—			(435	)		(435	)
Distributions to non-controlling interests		—		—		—		—		—			—			—			(6,115	)		(6,115	)
Contributions from non-controlling interests		—		—		—		—		—			—			—			4,340			4,340
Purchase of non-controlling interests		—		—		—		—		(5,695	)		—			—			(555	)		(6,250	)
Dividends paid or accrued on Common Shares of Beneficial Interest ($0.4875 per share)		—		—		—		—		—			(16,119	)		—			—			(16,119	)
Dividends paid or accrued on Series D Preferred Shares ($1.15625 per share)		—		—		—		—		—			(6,498	)		—			—			(6,498	)
Net proceeds from Series D Preferred Share offering		3,220		80,500		—		—		(2,928	)		—			—			—			77,572
Change in unrealized gain on interest rate derivatives		—		—		—		—		—			—			(73	)		—			(73	)
Stock issued pursuant to dividend
reinvestment plan		—		—		36		36		361			—			—			—			397
Balance, September 30, 2012		4,820	$	120,500		33,077	$	33,077	$	617,837		$	(307,144	)	$	(165	)	$	18,269		$	482,374

See Notes to Consolidated Financial Statements.

5

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited, in thousands)

	Nine Months Ended September 30,
	2013			2012
Cash flows from operating activities
Net income	$	31,429		$	26,284
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of deferred financing costs)		10,355			8,552
Amortization of lease intangibles		5,901			5,028
Straight-line rental income		(3,584	)		(2,662	)
Loan discount accretion		(2,283	)		(5,984	)
Discount accretion received in cash		37			14,065
Income from preferred equity investments		(576	)		—
Distributions of income from preferred equity investments		123			97
Income of equity investments		(26,249	)		(14,051	)
Distributions of income from equity investments		19,354			17,097
Restricted cash held in escrows		1,763			(4,063	)
Loss (gain) on sale of securities carried at fair value		133			(41	)
Unrealized loss (gain) on securities carried at fair value		142			(7,254	)
Unrealized gain on loan securities carried at fair value		(215	)		(447	)
Impairment loss on investment in real estate		2,904			698
Tenant leasing costs		(3,365	)		(3,211	)
Gain on sale of real estate investments		(10,948	)		(945	)
Equity compensation expenses		557			—
Bad debt expense (recovery)		104			(116	)
Changes in assets and liabilities:
Interest receivable		58			(293	)
Accounts receivable and other assets		450			533
Accounts payable, accrued liabilities and other liabilities		(255	)		4,425
Net cash provided by operating activities		25,835			37,712
Cash flows from investing activities
Investments in real estate		(6,289	)		(29,975	)
Investment in equity investments		(11,982	)		(47,925	)
Investment in preferred equity investments		—			(4,000	)
Proceeds from sale of investments in real estate		36,217			7,024
Proceeds from sale of equity investments		26			2,297
Return of capital distribution from equity investments		14,649			83,736
Purchase of securities carried at fair value		—			(5,654	)
Proceeds from sale of securities carried at fair value		12,345			4,614
Restricted cash held in escrows		(2,677	)		(4,478	)
Issuance and acquisition of loans receivable		(21,437	)		(64,970	)
Collection of loans receivable		47,597			37,126
Proceeds from sale of loans receivable		19,318			—
Cash from consolidation of properties		473			—
Issuance of secured financing receivable		(30,000	)		—
Deposits on real estate		(25,606	)		—
Net cash provided by (used in) investing activities		32,634			(22,205	)
(Continued on next page)

See Notes to Consolidated Financial Statements.

6

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited, in thousands, continued)

	Nine Months Ended September 30,
	2013			2012
Cash flows from financing activities
Proceeds from mortgage loans payable		48,100			15,897
Principal payments of mortgage loans payable		(20,295	)		(8,740	)
Payment of secured financing		(23,770	)		—
Proceeds from issuance of Series D Preferred Shares		—			77,572
Proceeds from issuance of Senior Notes Payable		—			86,250
Repayment of revolving line of credit		—			(40,000	)
Restricted cash held in escrows		(2,921	)		(2,818	)
Deferred financing costs		(789	)		(3,766	)
Contribution from non-controlling interest		861			4,340
Distribution to non-controlling interest		(52	)		(6,115	)
Purchase of non-controlling interests		(150	)		(400	)
Issuance of Common Shares under Dividend Reinvestment Plan		353			397
Issuance of Common Shares through offering		29,960			—
Dividend paid on Common Shares		(16,102	)		(16,113	)
Dividend paid on Series D Preferred Shares		(5,574	)		(3,712	)
Dividend paid on Restricted Shares		(10	)		—
Net cash provided by financing activities		9,611			102,792
Net increase in cash and cash equivalents		68,080			118,299
Cash and cash equivalents at beginning of period		97,682			40,952
Cash and cash equivalents at end of period		165,762			159,251
Supplemental Disclosure of Cash Flow Information
Interest paid	$	17,780		$	11,248
Capitalized interest	$	600		$	—
Taxes paid	$	201		$	317
Supplemental Disclosure on Non-Cash Investing and Financing Activities
Dividends accrued on Common Shares	$	6,018		$	5,375
Dividends accrued on Series D Preferred Shares	$	2,786		$	2,786
Capital expenditures accrued	$	2,547		$	2,777
Transfer from loans receivable	$	—		$	(2,938	)
Transfer from preferred equity	$	—		$	(3,923	)
Transfer to equity investment	$	—		$	6,861
Transfer to loan receivable	$	—		$	6,550
Transfer from equity investment	$	—		$	(12,400	)
Transfer to additional paid-in capital	$	—		$	5,487
Transfer to non-controlling interests	$	—		$	363
Contribution to WRT-Elad One South State Equity L.P.	$	897		$	—

See Note 18 for a discussion of fair value assets acquired and liabilities assumed.

See Notes to Consolidated Financial Statements.

7

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. Organization

Winthrop Realty Trust (“Winthrop”), a real estate investment trust (“REIT”) under Sections 856-860 of the Internal Revenue Code is an unincorporated association in the form of a business trust organized in Ohio under a Declaration of Trust dated August 1, 1961, as amended and restated on May 21, 2009, which has as its stated principal business activity the ownership and management of, and lending to, real estate and related investments.

Winthrop conducts its business through WRT Realty L.P., a Delaware limited partnership (the “Operating Partnership”). Winthrop is the sole general partner of, and owns directly and indirectly, 100% of the limited partnership interest in the Operating Partnership. All references to the “Trust” refer to Winthrop and its consolidated subsidiaries, including the Operating Partnership.

The Trust is engaged in the business of owning real property and real estate related assets which it categorizes into three segments: (i) ownership of investment properties including wholly owned properties and investments in joint ventures which own properties (“operating properties”); (ii) origination and acquisition of loans collateralized directly or indirectly by commercial and multi-family real property (collectively “loan assets”); and (iii) equity and debt interests in other real estate investment trusts (“REIT securities”).

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated interim financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial statements and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements, although management believes that the disclosures presented herein are adequate to make the accompanying unaudited consolidated interim financial statements not misleading. The accompanying unaudited consolidated interim financial statements should be read in conjunction with the audited consolidated annual financial statements and the notes thereto included in Winthrop’s Annual Report on Form 10-K for the year ended December 31, 2012 filed with the SEC. In the opinion of management, all adjustments considered necessary for fair statements have been included, and all such adjustments are of a normal recurring nature. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of the operating results for the full year.

The accompanying unaudited consolidated interim financial statements represent the consolidated results of Winthrop, its wholly-owned taxable REIT subsidiary, WRT-TRS Management Corp., the Operating Partnership and all majority-owned subsidiaries and affiliates over which the Trust has financial and operating control and variable interest entities (“VIE“s) in which the Trust has determined it is the primary beneficiary. All significant intercompany balances and transactions have been eliminated in consolidation. The Trust accounts for all other unconsolidated joint ventures using the equity method of accounting. Accordingly, the Trust’s share of the earnings of these joint ventures and companies is included in consolidated net income.

Stock-Based Compensation

Pursuant to the Trust’s 2007 Long Term Stock Incentive Plan the Trust may, from time to time, issue stock-based compensation awards to certain eligible persons including those performing services for FUR Advisors LLC (“FUR Advisors”), the Trust’s external advisor. During the first nine months of 2013, the Trust issued 600,000 restricted common shares of beneficial interest. See Note 16 for further discussion. The Trust accounts for this stock-based compensation in accordance with ASC 505-50, Equity-Based Payments to Non-Employees. Until the awards are no longer subject to forfeiture, the Trust measures stock-based compensation expense at each reporting date for any changes in fair value and recognizes the expense prorated for the portion of the requisite service period completed.

8

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Reclassifications

Certain prior year balances of accounts receivable have been reclassified to accrued rental income in order to conform to the current year presentation. Discontinued operations for all periods presented in the Consolidated Statements of Operations include the operations of the Trust’s retail properties in Seabrook, Texas and Denton, Texas which were disposed of in August 2013 and July 2013, respectively, and the Trust’s office properties in Deer Valley, Arizona and Andover, Massachusetts which were disposed of in June 2013 and March 2013, respectively, and the Trust’s retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana, both of which were disposed of in September 2012. Also included in discontinued operations for all periods presented are the operations of the Trust’s office property in Lisle, Illinois which is currently under contract to be sold and is classified as held for sale at September 30, 2013. It is expected that the sale will be consummated during the fourth quarter of 2013.

Out of Period Adjustment

During the three months ended September 30, 2013, the Trust recorded an out of period adjustment in the amount of $224,000 to correct the capitalization of interest on an equity method investment in the Trust’s balance sheet and interest expense in the statement of operations. As a result, the Trust’s net income and income from continuing operations was understated by $224,000 for the period ended June 30, 2013 and overstated by the same amount for the three months ended September 30, 2013. Additionally, for the period ended June 30, 2013, the Trust’s cash provided by operating activities was understated by $224,000 and cash provided by investing activities was overstated by $224,000. The Trust concluded that this adjustment is not material to the current period or the prior period’s consolidated financial statements. As such, this cumulative charge was recorded in the statement of operations for the three months ended September 30, 2013, rather than restating prior periods.

Earnings Per Share

The Trust determines basic earnings per share on the weighted average number of common shares of beneficial interest (“Common Shares”) outstanding during the period and reflects the impact of participating securities. The Trust computes diluted earnings per share based on the weighted average number of Common Shares outstanding combined with the incremental weighted average effect from all outstanding potentially dilutive instruments.

9

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The Trust has calculated earnings per share in accordance with relevant accounting guidance for participating securities and the two class method. The reconciliation of earnings attributable to Common Shares outstanding for the basic and diluted earnings per share calculation is as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Basic
Income from continuing operations	$	12,167		$	15,962		$	23,404		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		10,278			12,237			17,252			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(9	)		—			(24	)		—
Net income applicable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Basic	$	0.27		$	0.37		$	0.76		$	0.61
Diluted
Income from continuing operations	$	12,167		$	15,962		$	23,404		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		10,278			12,237			17,252			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(9	)		—			(24	)		—
Net income applicable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Stock options (1)		2			1			2			—
Restricted shares (2)		70			—			40			—
Diluted weighted-average Common Shares		33,148			33,076			33,089			33,064
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Diluted	$	0.27		$	0.37		$	0.76		$	0.61

(1) The Trust’s outstanding stock options were dilutive for the three and nine months ended September 30, 2013 and 2012. The weighted-average stock options for the nine months ended September 30, 2012 was less than one thousand shares.

(2) The Trust’s restricted stock was dilutive for the three and nine months ended September 30, 2013.

For the quarter ended September 30, 2013, the Trust paid a regular quarterly dividend of $0.1625 per Common Share and a regular quarterly dividend of $0.578125 per share of its Series D Cumulative Redeemable Preferred Shares of Beneficial Interest (the “Series D Preferred Shares”).

10

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Recently Issued Accounting Standards

On February 5, 2013, FASB issued ASU No. 2013-02: Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, to improve the transparency of reporting the reclassifications of significant amounts out of accumulated other comprehensive income. This guidance requires entities to present the effects on the line items of net income of significant reclassifications from accumulated other comprehensive income, either where net income is presented or in the notes, as well as cross-reference to other disclosures currently required under U.S. GAAP for other reclassification items (that are not required under U.S. GAAP) to be reclassified directly to net income in their entirety in the same reporting period. The new disclosure requirements will be effective for annual reporting periods beginning on or after January 1, 2013. The new disclosures will be required for both interim and annual reporting. The Trust has evaluated this new guidance and its adoption did not have a material impact on its consolidated financial statements.

On December 16, 2011, FASB issued ASU No. 2011-11: Balance Sheet (Topic 210)—Disclosures about Offsetting Assets and Liabilities, clarified by ASU No. 2013-1, which requires entities to disclose both gross information and net information about both instruments and transactions eligible for offset in the financial statements particularly for transactions related to derivatives, sale and repurchase agreements and reverse sale and repurchase agreements, and securities borrowing and securities lending arrangements. The new disclosure requirements will be effective for annual reporting periods beginning on or after January 1, 2013. The new disclosures will be required for all prior comparative periods presented. The Trust has evaluated this new guidance and its adoption did not have a material impact on its consolidated financial statements.

3. Fair Value Measurements

REIT securities, loan securities and derivative financial instruments are reported at fair value. The accounting standards establish a framework for measuring fair value as well as disclosures about fair value measurements. They emphasize that fair value is a market based measurement, not an entity-specific measurement. Therefore a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, the standards establish a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

The Trust’s Level 3 loan securities carried at fair value primarily consist of non-agency mortgage-related securities. The Trust values the loan securities carried at fair value it holds based primarily on prices received from a pricing service. The techniques used by the pricing service to develop the prices generally are either: (a) a comparison to transactions involving instruments with similar collateral and risk profiles; or (b) industry standard modeling, such as a discounted cash flow model. The significant inputs and assumptions used to determine the fair value of the Trust’s loan securities include prepayment rates, probability of default, loss severity and yield to maturity percentages.

Recurring Measurements

The table below presents the Trust’s assets measured at fair value on a recurring basis as of September 30, 2013 according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Assets and Liabilities
Securities carried at fair value	$	7,074	$	—		$	—	$	7,074
Loan securities carried at fair value		—		—			226		226
Interest rate hedges		—		(14	)		—		(14	)
	$	7,074	$	(14	)	$	226	$	7,286

11

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The table below presents the Trust’s assets measured at fair value on a recurring basis as of December 31, 2012, according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Securities carried at fair value	$	19,694	$	—	$	—	$	19,694
Loan securities carried at fair value		—		—		11		11
Interest rate hedges		—		8		—		8
	$	19,694	$	8	$	11	$	19,713

There were no inter-level transfers of assets or liabilities during the nine months ended September 30, 2013 and September 30, 2012.

The table below includes a roll forward of the balance sheet amounts from January 1, 2013 to September 30, 2013 and from January 1, 2012 to September 30, 2012 including the change in fair value, for financial instruments classified by the Trust within Level 3 of the valuation hierarchy (in thousands). When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement.

Loan Securities Carried at Fair Value	Nine Months Ended September 30, 2013		Nine Months Ended September 30, 2012
Fair value, January 1	$	11	$	5,309
Net unrealized gain		215		447
Fair value, September 30	$	226	$	5,756
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at September 30, 2013 and 2012, respectively	$	215	$	447

Quantitative Information about Level 3 Fair Value Measurements

At September 30, 2013 the Trust held only one loan security which is valued at $226,000, or 20% of face value. The valuation reflects assumptions that would be considered by market participants along with management’s assessment of collectible future cash flows.

Non-Recurring Measurements

Non-recurring measurements of fair value of assets or liabilities would typically include investments in real estate, assets held for sale and equity investments. During the three months ended September 30, 2013 the Trust recognized an impairment charge of $2,750,000 on its Lisle, Illinois property which is included in assets held for sale at September 30, 2013. During the nine months ended September 30, 2013 the Trust recognized impairment charges totaling $2,904,000 on its Lisle, Illinois and Denton, Texas properties. The Trust recognized an impairment charge of $698,000 on its Memphis, Tennessee property for the three and nine months ended September 30, 2012.

12

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

During the quarter ended June 30, 2013 the Trust entered into a purchase and sale agreement on its Denton, Texas property. At June 30, 2013 the purchase deposit was non-refundable and it was probable that the sale would be consummated. As a result the property was classified as held for sale at June 30, 2013. A fair value measurement was prepared based on the purchase contract and a $154,000 impairment charge was recorded at June 30, 2013. The property was sold on July 2, 2013.

In light of continued leasing challenges and specific sub-market dynamics, at September 30, 2013 the Trust re-evaluated its business plan and revised its holding period for its operating property in Lisle, Illinois referred to as 701 Arboretum. As a result, it was determined that due to the shorter holding period, the carrying value of the 701 Arboretum property was no longer fully recoverable. The property was classified as held for sale at September 30, 2013. The Trust has entered into a purchase and sale agreement on this property and, if consummated, the sale is expected to close in the fourth quarter of 2013. A fair value measurement was prepared based on the purchase contract with a third-party market participant, less costs to sell, and a $2,750,000 impairment charge was recorded at September 30, 2013.

The Trust’s net lease retail property in Memphis, Tennessee was placed into discontinued operations during the period ended September 30, 2012. The carrying value of the property exceeded the fair value less costs to sell resulting in a $698,000 impairment charge which was recorded at September 30, 2012.

The Table below presents the Trust’s assets measured at fair value on a non-recurring basis as of September 30, 2013, according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Non-Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Assets held for sale	$	—	$	—	$	2,421	$	2,421
	$	—	$	—	$	2,421	$	2,421

13

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Financial Instruments Not Reported at Fair Value

The carrying value and estimated fair value of financial instruments not recorded at fair value on a recurring basis but required to be disclosed at fair value were as follows (in thousands):

	September 30, 2013
					Fair value hierarchy level
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Loans receivable	$	108,163	$	122,876	$	—	$	—	$	122,876
Secured financing receivable		30,395		30,395		—		—		30,395
Mortgage loans payable		308,049		296,678		—		—		296,678
Senior notes payable		86,250		89,666		89,666		—		—
Secured financings		29,150		29,366		—		—		29,366
Notes payable		1,664		1,664		—		—		1,664

	December 31, 2012
					Fair value hierarchy level
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Loans receivable	$	211,250	$	222,246	$	—	$	—	$	222,246
Mortgage loans payable		280,576		270,923		—		—		270,923
Senior notes payable		86,250		89,183		89,183		—		—
Secured financings		52,920		53,253		—		—		53,253
Notes payable		1,676		1,676		—		—		1,676

Loans Receivable, Secured Financing Receivable, Mortgage Loans Payable, Secured Financings and Notes Payable

Fair values of loans receivable, secured financing receivable, mortgage loans payable, secured financings and notes payable are primarily determined by discounting the expected cash flows at current interest rates plus an applicable risk spread, which reflects credit quality and maturity of the loans. The risk spread is based on loans with comparable credit quality, maturities and risk profile. Loans receivable may also be based on the fair value of the underlying real estate collateral less cost to sell, which is estimated using appraised values. These are classified as Level 3.

14

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Fair Value Option

The current accounting guidance for fair value measurement provides a fair value option election that allows companies to irrevocably elect fair value as the measurement attribute for certain financial assets and liabilities. Changes in fair value for assets and liabilities for which the election is made are recognized in earnings on a quarterly basis based on the then market price regardless of whether such assets or liabilities have been disposed of at such time. The fair value option guidance permits the fair value option election to be made on an instrument by instrument basis when it is initially recorded or upon an event that gives rise to a new basis of accounting for that asset or liability. The Trust elected the fair value option for all loan securities and REIT securities acquired.

There was no change in the fair value of loan securities or in the per share value of the REIT securities for the three months ended September 30, 2013. During the three months ended September 30, 2012, the Trust recognized net unrealized gains of $3,484,000. For the nine months ended September 30, 2013 and 2012, the Trust recognized net unrealized gains of $73,000 and $7,701,000, respectively. The change in fair value of the REIT securities and loan securities for which the fair value option was elected is recorded as an unrealized gain or loss in the Trust’s Consolidated Statements of Operations. Income related to securities carried at fair value is recorded as interest and dividend income.

The following table presents as of September 30, 2013 and December 31, 2012 the Trust’s financial assets for which the fair value option was elected (in thousands):

Financial Instruments at Fair Value	September 30, 2013		December 31, 2012
Assets
Securities carried at fair value:
REIT common shares	$	7,074	$	19,694
Loan securities carried at fair value		226		11
	$	7,300	$	19,705

The table below presents as of September 30, 2013 the difference between fair values and the aggregate contractual amounts due for which the fair value option has been elected (in thousands):

	Fair Value at September 30, 2013		Amount Due Upon Maturity		Difference
Assets
Loan securities carried at fair value	$	226	$	1,130	$	904

4. Acquisitions, Dispositions, Leasing and Financing Activities

Operating Property Activity:

1515 Market Street – Loan Modification and Equity Acquisition - On February 1, 2013 the Trust entered into a loan modification agreement which extended the maturity date to February 1, 2016, increased the loan balance to $71,629,000 (from $70,000,000) and changed the interest rate to be the greater of 7.5% or LIBOR plus 6.5%. The loan balance can be increased through future funding advances up to an aggregate of $6,000,000 to cover tenant improvements, capital expenditures and leasing commissions. For each $500,000 of future advances, the interest rate increases by 0.10%. The loan modification also provides the Trust, in its capacity as the lender, with a 40% participation interest in the case of a capital event.

15

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Simultaneously with the modification of the loan, the Trust acquired, for $10,000, an indirect 49% equity interest in the property. As part of the transaction, the Trust acquired the general partner interest in the property. Management has determined that this entity is a variable interest entity (“VIE”) and that the Trust is the primary beneficiary of the VIE. As a result, the Trust has consolidated this property as of February 1, 2013. All intercompany transactions have been eliminated in consolidation. For segment reporting purposes, this investment will be classified within the operating properties segment as of February 1, 2013. Prior to consolidation, this investment was part of the loan assets segment. See Note 18 for additional information related to the consolidation of this property.

Atrium Mall LLC – Equity Investment - On June 20, 2013 the Trust, through a newly formed 50-50 joint venture with Marc Realty, acquired a non-performing $10,650,000 mortgage loan for $6,625,000. In addition, the joint venture paid $1,137,000 to fund escrows at the closing. The Trust invested a total of $3,935,000 in this joint venture during the quarter ended June 30, 2013 and accounted for this investment using the equity method. The loan was in maturity default at the time of acquisition and was acquired with the intention of foreclosing or working out a consensual assignment with the borrower. The loan was collateralized by a leasehold interest in the Atrium Mall in Chicago, Illinois. The leasehold interest is for 71,000 square feet of commercial/retail space that comprises the bottom three floors of an office building known as the James R. Thompson building of which the lease expires in September 2014 with six automatic five-year extensions which are exercisable at the lessee’s option. The building is owned by the State of Illinois.

On July 26, 2013 the joint venture entered into an agreement with the borrower pursuant to which the borrower conveyed the leasehold interest to the venture in lieu of foreclosure. Accordingly, the venture now holds the leasehold interest in the property.

701 Seventh Avenue – Equity Investment – On July 9, 2013 the Trust agreed to increase its ownership in the current joint venture and to participate in the future hotel development. In doing so, the Trust has committed to invest up to an aggregate of $120,000,000 inclusive of contributions already made. During the quarter ended September 30, 2013, the Trust made additional capital contributions to the venture totaling $5,403,000. In October 2013 the Trust made an additional contribution of $16,686,000 to the venture reducing its overall future funding commitment to $67,198,000.

Luxury Residential – Property Acquisition – On August 13, 2013 the Trust entered into a binding purchase agreement to acquire four recently constructed Class A luxury apartment buildings for an aggregate purchase price of $246,000,000. At signing, the Trust made a $25,500,000 deposit which is non-refundable, except in limited circumstances. On October 7, 2013 the Trust made an additional non-refundable deposit of $7,500,000 to extend the closing date to November 11, 2013. See Note 19 for discussion on activity subsequent to September 30, 2013.

Andover, Massachusetts – Property Sale - On March 28, 2013 the Trust sold its Andover, Massachusetts office property to an independent third party for gross sale proceeds of $12,000,000. After costs and pro-rations, the Trust received net proceeds of approximately $11,425,000 and recorded a gain of $2,775,000 on the sale of the property. The results of operations for this property have been classified as discontinued operations for all periods presented in the consolidated financial statements.

Deer Valley, Arizona – Property Sale - On June 11, 2013 the Trust sold its Deer Valley, Arizona property to an independent third party for gross sale proceeds of $20,500,000. After costs and pro-rations, the Trust received net proceeds of approximately $19,585,000 and recorded a gain of $6,752,000 on the sale of the property. The results of operations for this property have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

Denton, Texas – Property Sale - On July 2, 2013 the Trust sold its Denton, Texas property to an independent third party for gross sale proceeds of $1,850,000. After costs and pro-rations, the Trust received net proceeds of approximately $1,703,000 and recorded no gain or loss on the sale of the property. The results of operations for all periods have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

Seabrook, Texas – Property Sale - On August 1, 2013 the Trust sold its Seabrook, Texas property to an independent third party for gross sale proceeds of $3,300,000. After costs and pro-rations, the Trust received net proceeds of approximately $3,202,000 and recorded a gain of $1,428,000 on the sale of the property. The results of operations for all periods have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

16

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Loan Asset Activity:

Playa Vista - On January 24, 2013 the Trust originated a $20,500,000 mezzanine loan collateralized by a 260,000 square foot office campus in the Los Angeles, California area. The loan is subordinate to an $80,300,000 mortgage loan, matures January 23, 2015, bears interest at LIBOR plus 14.25% per annum, with a 0.5% LIBOR floor and requires payments of interest only at a rate of 8.25% with the remaining interest being accrued and added to principal. In connection with the origination, the borrower paid to the Trust an origination fee of $205,000. On March 1, 2013 the Trust sold a 50% pari passu participation interest in the loan for $10,250,000 and gave the transferee a credit of $100,000 from the initial loan origination. No gain or loss was recognized on the sale of the interest.

10 Metrotech Loan LLC – Equity Investment Repayment – On July 30, 2013 the $40,000,000 loan held by this venture was paid off at par. The venture, which had acquired the loan in August 2012 for $32,500,000, recognized $7,500,000 of discount accretion income in the current period in connection with the payoff at par. As a result of the payoff, the Trust received a distribution of $13,333,000 and recorded equity income of $2,676,000 in connection with its 33.33% ownership interest in the venture.

WRT-Elad One South State Lender LP – Equity Investment – On August 21, 2013 the Trust closed on an agreement to acquire the additional 50% joint venture interest (“Acquired Interest”) that was held by its joint venture partner, Elad Canada Inc. (“Elad”) for $30,000,000 (“Acquisition Price”). WRT-Elad One South State Lender LP (“Lender LP”) holds a mezzanine loan indirectly collateralized by the property located at One South State Street, Chicago, Illinois known as the Sullivan Center. The venture’s mezzanine loan had an outstanding balance of principal and accrued interest of approximately $56,150,000 at the time of the transaction discussed above. Concurrently, the Trust entered into an option agreement (“Option”) with Elad granting Elad the option, but not obligation, to repurchase their interest in the venture for the Acquisition Price adjusted for the pro-rata portion of any accrued and unpaid interest and principal payments made by the borrower. Per the terms of the agreements, the Acquired Interest and Option cannot be transferred to parties other than the Trust and Elad. The term of the Option corresponds with Lender LP’s mezzanine loan. Given the nature of the Option and the specific rights of Elad, the transaction is accounted for as a secured financing arrangement under ASC 860- Transfers and Servicing. The Trust will recognize interest income on the secured financing receivable in accordance with GAAP, at an annual interest rate of 15%, and will continue to recognize equity income on its previously held 50% interest in the venture.

Financing Activity:

Recourse Secured Financings – Loan Payments - During the three and nine months ended September 30, 2013, several of the condominium units collateralizing the Queensridge loan receivable were sold resulting in payments to the Trust of approximately $5,571,000 and $30,648,000, respectively. With the proceeds, the Trust satisfied its recourse debt with KeyBank at June 30, 2013.

1515 Market Street – New First Mortgage - On April 25, 2013 the entity that holds title to the property located at 1515 Market Street in Philadelphia, Pennsylvania (the “1515 Market Owner”) obtained a $43,000,000 non-recourse first mortgage loan (“First Mortgage”) from an unaffiliated third party. The First Mortgage bears interest at LIBOR plus 2.0% per annum, requires monthly payments of interest only and matures on May 1, 2016. On the same date, the 1515 Market Owner entered into an interest rate swap agreement which effectively fixes LIBOR at 0.50% for the term of the First Mortgage. The Trust, which held the mortgage loan (“Original Mortgage”) collateralized by the property at the time of the closing of the First Mortgage, received $38,472,000 of loan proceeds from the First Mortgage financing which reduced the balance on the Original Mortgage to $33,157,000. The Original Mortgage is now subordinate to the First Mortgage, bears interest at an effective rate of 12.9% per annum and is secured by a second mortgage on the property. The Trust’s investment in the Original Mortgage has been reduced to $21,098,000 resulting in an effective interest rate on the Trust’s cash investment in this asset of 19.6%. Due to the Trust’s ownership of a 49% interest, including the general partner interest, in the 1515 Market Owner and an additional 40% profits participation interest in the property, the Trust consolidates the operation of this property and the Original Mortgage, and all intercompany transactions are eliminated in consolidation.

Churchill – Financing - On June 28, 2013 the Trust obtained a $5,100,000 first mortgage on its Churchill, Pennsylvania property. The loan bears interest at a rate of 3.5% per annum, requires monthly payments of principal and interest and matures on August 1, 2024. After closing costs, the Trust received net proceeds of approximately $4,922,000.

17

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Public Offering:

On September 30, 2013 the Trust closed a public offering of 2,750,000 Common Shares at a price of $11.45 per share. The Trust received net proceeds of $30,250,000 after the underwriting discount but prior to offering expenses.

5. Receivables

Loans Receivable

The following table summarizes the Trust’s loans receivable at September 30, 2013 and December 31, 2012 (in thousands):

			Carrying Amount				Contractual Maturity Date
Description	Loan Position	Stated Interest Rate	September 30, 2013		December 31, 2012
Renaissance Walk	Mezzanine	LIBOR + 12.0% (2)	$	3,000	$	3,000	01/01/14
Hotel Wales	Whole Loan	LIBOR + 4.0% (3)		20,097		20,101	10/05/14 (4)
The Shops at Wailea	B-Note	6.15%		6,037		5,376	10/06/14
Legacy Orchard (1)	Corporate Loan	15.0%		9,750		9,750	10/31/14
Queensridge	Whole Loan	LIBOR + 11.5% (5)		8,214		39,170	11/15/14
San Marbeya	Whole Loan	5.88%		27,686		27,149	01/01/15
Playa Vista	Mezzanine	LIBOR + 14.25% (5)		10,323		—	01/23/15
Churchill (1)	Whole Loan	LIBOR + 3.75%		685		683	06/01/15
Rockwell	Mezzanine	12.0%		364		323	05/01/16
500-512 7th Ave	B-Note	7.19%		10,029		10,009	07/11/16
Pinnacle II	B-Note	6.31%		4,649		4,652	09/06/16
Poipu Shopping Village	B-Note	6.62%		2,028		1,948	01/06/17
Wellington Tower	Mezzanine	6.79%		2,790		2,687	07/11/17
Mentor Building	Whole Loan	10.0%		2,511		2,512	09/10/17
1515 Market	Whole Loan	(6)		—		58,650	(6)
127 West 25th Street	Mezzanine	—		—		8,687	(7)
180 N. Michigan	Mezzanine	—		—		5,237	(7)
Fenway Shea (1)	Whole Loan	—		—		2,273	(7)
The Disney Building	B-Note	—		—		9,043	(8)
			$	108,163	$	211,250

(1) The Trust determined that certain loans receivable are variable interests in VIEs primarily based on the fact that the underlying entities do not have sufficient equity at risk to permit the entity to finance its activities without additional subordinated financial support. The Trust does not have the power to direct the activities of the entity that most significantly impact the entity’s economic performance and is not required to consolidate the underlying entity.

(2) LIBOR floor of 2%.

(3) LIBOR floor of 3%.

(4) The borrower exercised their one year extension option during the third quarter of 2013.

(5) LIBOR floor of 0.5%.

(6) This loan was in maturity default at the time of acquisition. The loan was modified on February 1, 2013. The Trust consolidates the operations of the borrower entity and the loan receivable is eliminated in consolidation.

(7) The loans were satisfied at par during the nine months ended September 30, 2013.

(8) The loan was sold during the nine months ended September 30, 2013.

The carrying amount of loans receivable includes accrued interest of $563,000 and $1,016,000 at September 30, 2013 and December 31, 2012, respectively, and cumulative accretion of $4,773,000 and $2,527,000 at September 30, 2013 and December 31, 2012, respectively.

18

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

At September 30, 2013 and December 31, 2012, the Trust’s loans receivable have unamortized discount totaling $7,620,000 and $9,865,000, respectively.

The weighted average coupon as calculated on the par value of the Trust’s loans receivable was 6.90% and 7.65% and the weighted average yield to maturity as calculated on the carrying value of the Trust’s loan receivable was 11.88% and 11.43% at September 30, 2013 and December 31, 2012, respectively.

The San Marbeya, Hotel Wales and Queensridge loans receivable are part of secured financing transactions, with recourse and non-recourse financings at September 30, 2013. The Trust had outstanding non-recourse secured financings related to the San Marbeya and Hotel Wales loans receivable in the amount of $29,150,000 at September 30, 2013 and December 31, 2012. The Trust had recourse secured financings related to the Queensridge loan receivable in the amount of $23,770,000 at December 31, 2012. As of September 30, 2013 the Trust has fully repaid the recourse secured financing related to the Queensridge loan receivable. No other loans receivable are part of secured financing transactions at September 30, 2013. See Note 8 for additional disclosures regarding the Trust’s secured financings.

Loan Receivable Activity

Activity related to loans receivable is as follows (in thousands):

	Nine Months Ended September 30, 2013
Balance at January 1, 2013	$	211,250
Purchase and advances		22,314
Interest (received) accrued, net		(453	)
Repayments/ Sale proceeds		(66,915	)
Elimination of 1515 Market in consolidation		(60,279	)
Loan discount accretion		2,283
Discount accretion received in cash		(37	)
Balance at September 30, 2013	$	108,163

The following table summarizes the Trust’s interest, dividend and discount accretion income for the three and nine months ended September 30, 2013 and 2012 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Interest on loan assets	$	3,011	$	2,985	$	10,912	$	8,130
Accretion of loan discount		806		425		2,283		5,984
Interest and dividends on securities		100		312		350		904
Total interest, dividends, and discount accretion	$	3,917	$	3,722	$	13,545	$	15,018

19

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Credit Quality of Loans Receivable and Loan Losses

The Trust evaluates impairment on its loan portfolio on an individual basis and has developed a loan grading system for all of its outstanding loans that are collateralized directly or indirectly by real estate. Grading categories include debt yield, debt service coverage ratio, length of loan, property type, loan type, and other more subjective variables that include property or collateral location, market conditions, industry conditions, and sponsor’s financial stability. Management reviews each category and assigns an overall numeric grade for each loan to determine the loan’s risk of loss and to provide a determination as to whether an individual loan is impaired and whether a specific loan loss allowance is necessary. A loan’s grade of credit quality is determined quarterly.

All loans with a positive score do not require a loan loss allowance. Any loan graded with a neutral score or “zero” is subject to further review of the collectability of the interest and principal based on current conditions and qualitative factors to determine if impairment is warranted. Any loan with a negative score is deemed impaired and management then would measure the specific impairment of each loan separately using the fair value of the collateral less costs to sell.

Management estimates the loan loss allowance by calculating the estimated fair value less costs to sell of the underlying collateral securing the loan based on the fair value of underlying collateral and comparing the fair value to the loan’s net carrying value. If the fair value is less than the net carrying value of the loan, an allowance is created with a corresponding charge to the provision for loan losses. The allowance for each loan will be maintained at a level the Trust believes will be adequate to absorb losses.

The table below summarizes the Trust’s loans receivable by internal credit rating at September 30, 2013 and December 31, 2012 (in thousands, except for number of loans):

	September 30, 2013				December 31, 2012
Internal Credit Quality	Number of Loans		Carrying Value of Loans Receivable		Number of Loans		Carrying Value of Loans Receivable
Greater than zero		13	$	97,840		18	$	211,250
Equal to zero		1		10,323		—		—
Less than zero		—		—		—		—
		14	$	108,163		18	$	211,250

Non-Performing Loans

The Trust considers a loan to be non-performing and places loans on non-accrual status at such time as management determines it is probable that it will be unable to collect all amounts due according to the contractual terms of the loan. While on non-accrual status, based on the Trust’s judgment as to collectability of principal, loans are either accounted for on a cash basis, where interest income is recognized only upon actual receipt of cash, or on a cost-recovery basis, where all cash receipts reduce a loan’s carrying value. If and when a loan is brought back into compliance with its contractual terms, the Trust will resume accrual of interest. As of September 30, 2013 and December 31, 2012, there were no non-performing loans and no past due payments. The Trust did not record any provision for loan loss for the three and nine months ended September 30, 2013.

Secured Financing Receivable

In August 2013 the Trust closed on an agreement to acquire Elad’s 50% interest in the Lender LP joint venture for $30,000,000. In connection with the transaction, the Trust entered into an option agreement with Elad granting Elad the right, but not obligation, to repurchase their interest in the venture. The option agreement provides Elad, as the transferor, the option to unilaterally cause the return of the asset at the earlier of two years from August 21, 2013 or an event of default on Lender LP’s mezzanine debt. As such, Elad is able to retain control of its interest in Lender LP for financial reporting purposes as the exercise of the option is unconditional other than for the passage of time. As a result, for financial reporting purposes, the transfer of the financial asset is accounted for as a secured financing rather than an acquisition. The $30,000,000 acquisition price is recorded as a secured financing receivable. The Trust will recognize interest income on the secured financing receivable on an accrual basis in accordance with GAAP, at an annual interest rate of 15%. The Trust recorded $395,000 of interest income during the three and nine months ended September 30, 2013.

20

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

6. Securities Carried at Fair Value

Securities carried at fair value are summarized in the table below (in thousands):

	September 30, 2013				December 31, 2012
	Cost		Fair Value		Cost		Fair Value
REIT Common shares	$	6,318	$	7,074	$	15,876	$	19,694
Loan securities		161		226		161		11
	$	6,479	$	7,300	$	16,037	$	19,705

During the three and nine months ended September 30, 2013, securities carried at fair value were sold for total proceeds of approximately $3,255,000 and $12,345,000, respectively. The Trust recorded a loss on these sales of approximately $31,000 and $133,000, respectively, in the three and nine months ended September 30, 2013.

No securities carried at fair value were sold during the three months ended September 30, 2012. During the nine months ended September 30, 2012, securities carried at fair value were sold for total proceeds of approximately $4,614,000. The Trust recorded a gain on these sales of approximately $41,000 in the nine months ended September 30, 2012.

For purpose of determining gains or losses, the cost of securities is based on specific identification. For the three months ended September 30, 2013 and 2012, the Trust recognized net unrealized losses on securities carried at fair value and loan securities carried at fair value of $0 and $3,484,000, respectively as the result of the change in fair value of the financial assets for which the fair value option was elected. For the nine months ended September 30, 2013 and 2012, the Trust recognized net unrealized gains on securities carried at fair value and loan securities carried at fair value of $73,000, and $7,701,000, respectively.

21

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

7. Equity Investments

The Trust’s carrying amounts in its equity investments consist of the following at September 30, 2013 and December 31, 2012 (in thousands):

Venture Partner	Equity Investment	Nominal % Ownership at September 30, 2013			September 30, 2013		December 31, 2012
VHH LLC (1)	Vintage Housing Holding LLC		75.0	%	$	33,706	$	30,534
Elad Canada Inc.	WRT-Elad One South State Equity LP		50.0	%		—		460
Elad Canada Inc.	WRT-Elad One South State Lender LP		50.0	%		24,518		24,644
Mack-Cali	WRT-Stamford LLC		20.0	%		8,916		8,501
Atrium/Northstar	10 Metrotech Loan LLC		33.3	%		11		10,845
Atrium Holding	RE CDO Management LLC		50.0	%		993		1,779
Freed	Mentor Retail LLC		49.9	%		596		551
Inland	Concord Debt Holdings LLC		33.3	%		—		—
Inland	CDH CDO LLC		24.8	%		—		—
Inland (2)	Concord Debt Holdings LLC		33.3	%		982		3,974
Inland (2)	CDH CDO LLC		24.8	%		4,181		322
Sealy (1)	Northwest Atlanta Partners LP		60.0	%		7,741		8,104
Sealy (1)	Newmarket GP LLC		68.0	%		—		—
Sealy (1)	Airpark Nashville GP		50.0	%		—		—
Marc Realty (1)	Brooks Building LLC		50.0	%		8,076		7,983
Marc Realty (1)	High Point Plaza LLC		50.0	%		2,137		2,241
Marc Realty (1)	1701 Woodfield LLC		50.0	%		2,052		1,977
Marc Realty (1)	Enterprise Center LLC		50.0	%		2,440		2,679
Marc Realty (1)	Atrium Mall LLC		50.0	%		3,904		—
ROIC	WRT-ROIC Lakeside Eagle LLC		50.0	%		3		—
New Valley/Starwood	Socal Office Portfolio Loan LLC		73.0	%		—		8
New Valley/Witkoff	701 7th WRT Investors LLC		70.6	%		36,989		28,735
Fenway	WRT-Fenway Wateridge LLC		50.0	%		1,816		1,522
					$	139,061	$	134,859

(1) The Trust has determined that these equity investments are investments in VIEs. The Trust has determined that it is not the primary beneficiary of these VIEs since the Trust does not have the power to direct the activities that most significantly impact the economic performance of the VIEs.

(2) Represents the interests acquired from Lexington Realty Trust on May 1, 2012.

22

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The following table reflects the activity of the Trust’s equity investments for the period ended September 30, 2013 (in thousands):

Investment	Balance at December 31, 2012		Contributions		Equity Income (loss)			Distributions			Sales Price			Balance at September 30, 2013
Vintage Housing Holding LLC (2)	$	30,534	$	—	$	7,142		$	(3,970	)	$	—		$	33,706
WRT-Elad One South State Equity LP (2)		460		1,013		(1,473	)		—			—			—
WRT-Elad One South State Lender LP (2)		24,644		—		2,988			(3,114	)		—			24,518
WRT-Stamford LLC		8,501		—		701			(286	)		—			8,916
10 Metrotech LLC		10,845		—		3,284			(14,118	)		—			11
RE CDO Management LLC		1,779		—		3,710			(4,496	)		—			993
Mentor Retail LLC		551		—		45			—			—			596
Concord Debt Holdings LLC		—		—		3,041			(3,041	)		—			—
CDH CDO LLC		—		—		415			(402	)		(13	)		—
701 7th WRT Investors LLC (3)		28,735		7,745		2,375			(1,866	)		—			36,989
WRT-Fenway Wateridge LLC (2)		1,522		161		133			—			—			1,816
CDH CDO LLC (1)		322		—		4,274			(402	)		(13	)		4,181
Sealy		8,104		—		(363	)		—			—			7,741
Marc Realty		14,880		—		(17	)		(158	)					14,705
Atrium Mall LLC		—		3,935		(31	)		—			—			3,904
WRT-ROIC Lakeside Eagle LLC		—		25		(22	)		—			—			3
SoCal Office Portfolio Loan LLC		8		—		(2	)		(6	)		—			—
Concord Debt Holdings LLC (1)		3,974		—		49			(3,041	)		—			982
Total	$	134,859	$	12,879	$	26,249		$	(34,900	)	$	(26	)	$	139,061

(1) Represents the interests acquired from Lexington Realty Trust on May 1, 2012.

(2) The Trust has elected to report its share of earnings from the investment on a one month lag period.

(3) The Trust has elected to report its share of earnings from the investment on a three month lag period.

The Trust has determined that the fair value of certain of its investments in the Marc Realty ventures and the Sealy Northwest Atlanta venture marginally exceed their carrying values. While the Sealy Northwest Atlanta venture continues to aggressively market available space for lease and work with existing tenants for lease renewal, which has resulted in an increase in occupancy from 70% at December 31, 2012 to 74% at September 30, 2013, declines in occupancy could cause impairment of this venture that could be material.

WRT-Elad - The Trust holds its mezzanine loan interest in Sullivan Center through WRT One South State Lender LP (“Lender LP”) and its profits participation interest through WRT-Elad One South State Equity LP (“Equity LP”). On February 18, 2013 a forbearance agreement was entered into whereby Lender LP agreed to forbear from exercising its rights under the loan documents with respect to the borrower’s failure to pay debt service for the period from December 2012 through October 2013. To the extent such debt service is not paid, debt service will accrue and be added to the outstanding principal balance of the mezzanine loan on each applicable monthly payment date. In exchange for the forbearance, Equity LP’s future interest in the property increased by 5% to 70%, with a corresponding decrease in the borrower’s general partner’s interest. In consideration for the forbearance the borrower is required to pay a $1,400,000 fee to Lender LP on or prior to November 9, 2013. If the $1,400,000 is not paid, in lieu of payment, then Equity LP’s indirect future interest in the property will increase by an additional 6% with a corresponding decrease to the general partner’s interest.

There is a basis differential of $10,465,000 between the Trust’s carrying value of its investments in Equity LP and the basis reflected at the joint venture level, which is amortized over the life of the related assets. The basis differential primarily relates to a bargain purchase gain recognized at the joint venture level upon acquisition.

23

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Concord – On February 25, 2013 the Trust sold for $25,000 a 17% interest in the equity of CDH CDO LLC, exclusive of the interest in the entity that holds the collateral management agreement of CDH CDO, to Inland American. The sale of the interest was bifurcated between the Trust’s original interest and the interest acquired from Lexington Realty Trust with $12,500 of the sales price being allocated to each interest. The Trust recognized a gain of $12,500 on the sale of its original interest and a loss of $123,000 on the sale of its other interest. The sale of the interest did not affect the voting rights within CDH CDO LLC and did not result in a change in control. The Trust will continue to account for its investments in CDH CDO LLC under the equity method.

There is a basis differential on the Concord Debt Holdings and CDH CDO LLC interests acquired from Lexington of $5,440,000. This basis differential was a result of the purchase price exceeding the book basis at the venture level for the acquired interest.

RE CDO Management – On February 20, 2013 the venture sold its subordinated interests in Sorin CDO III for $2,750,000 and transferred the Sorin CDO III collateral management agreement for $0. On March 8, 2013 the venture sold its C Tranche subordinated interests in Sorin CDO IV for $6,240,000. As a result of the sales, the Trust received distributions of approximately $4,416,000 in the aggregate during the first quarter of 2013. The Trust’s share of the gain has been recorded as equity in earnings of this equity investment.

10 Metrotech Loan LLC – Equity Investment – On July 30, 2013 the $40,000,000 loan held by this venture was paid off at par. The venture, which had acquired the loan in August 2012 for $32,500,000, recognized $7,500,000 of discount accretion income in this current period in connection with the payoff at par. As a result of the payoff in July 2013, the Trust received a distribution from the venture of $13,333,000 and recorded equity income of $2,676,000 in connection with its 33.33% ownership interest in the venture. The venture level balance sheet consisted of total assets of $34,000 and $32,535,000 at September 30, 2013 and December 31, 2012, respectively and no liabilities at September 30, 2013 and December 31, 2012, respectively. The venture reported net income of $8,028,000 and $9,853,000 for the three and nine months ended September 30, 2013.

Sealy – On May 30, 2013 the Trust contributed its interest in Newmarket GP LLC and its interest in Airpark Nashville GP to WRT-TRS Management Corp its wholly owned taxable REIT subsidiary. The Trust’s carrying value of both investments was zero at the time of the contributions and the transaction had no effect on the financial statements of the Trust.

Atrium Mall LLC – Joint Venture Loan Acquisition – On June 20, 2013 the Trust, through a newly formed 50-50 joint venture with Marc Realty, acquired a non-performing $10,650,000 mortgage loan for $6,625,000. In addition, the joint venture paid $1,137,000 to fund escrows at the closing. The Trust invested a total of $3,935,000 in this joint venture during the quarter ended June 30, 2013. The loan was in maturity default at the time of acquisition.

On July 26, 2013 the joint venture entered into an agreement with the borrower pursuant to which the borrower conveyed the leasehold interest to the venture in lieu of foreclosure. Accordingly, the venture now holds the leasehold interest in the property.

24

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The summarized balance sheets of the Trust’s Vintage Housing Holding LLC venture is as follows (in thousands):

	September 30, 2013		December 31, 2012
ASSETS
Real estate, net	$	360,851	$	340,666
Cash and cash equivalents		5,469		6,555
Restricted cash held in escrows		45,380		41,878
Receivables and other assets		19,964		26,681
Total Assets	$	431,664	$	415,780
LIABILITIES AND MEMBERS’ CAPITAL
Mortgage and notes payable	$	313,078	$	298,654
Other liabilities		47,443		53,687
Non-controlling interests		18,006		15,997
Members’ Capital		53,137		47,442
Total Liabilities and Members’ Capital	$	431,664	$	415,780
Carrying value of the Trust’s investment in Vintage Housing Holding	$	33,706	$	30,534

The summarized statements of operations of the Trust’s Vintage Housing Holding LLC venture is as follows (in thousands):

	For the Three Months Ended September 30, 2013		For the Three Months Ended September 30, 2012		For the Nine Months Ended September 30, 2013		For the Nine Months Ended September 30, 2012
Total revenue	$	11,048	$	10,328	$	32,451	$	30,928
Expenses
Operating		4,649		4,254		13,952		12,250
Real estate taxes		128		139		397		442
Interest		485		1,503		1,480		4,824
Depreciation and amortization		446		978		1,137		6,605
Other expenses		1,453		1,323		4,176		4,048
Total expenses		7,161		8,197		21,142		28,169
Net income		3,887		2,131		11,309		2,759
Loss attributable to non-controlling interests		676		29		1,399		791
Net income attributable to VHH	$	4,563	$	2,160	$	12,708	$	3,550
Trust’s share of net income	$	2,525	$	1,392	$	7,142	$	2,326

The Trust records its investments in Vintage Housing Holding LLC on a one month lag, therefore amounts in the Trust’s financial statements for the period ended September 30, 2013 are based on balances and results from Vintage Housing Holding LLC for the period ended August 31, 2013.

25

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The summarized balance sheets of the Trust’s CDH CDO LLC venture are as follows (in thousands):

	September 30, 2013		December 31, 2012
ASSETS
Cash and cash equivalents	$	2,031	$	1,885
Real estate debt investments carried at fair value		183,110		185,060
Securities carried at fair value		80,463		95,994
Real estate, net		—		19,909
Interest and other receivables		1,066		1,030
Other assets		319		3,893
Total Assets	$	266,989	$	307,771
LIABILITIES AND MEMBERS’ CAPITAL
Collateralized debt obligation carried at fair value		153,361		191,345
Mortgage note payable		—		22,293
Interest rate swap liability		8,270		11,413
Other liabilities		2,727		5,423
Non-controlling interests		102		102
Members’ Capital		102,529		77,195
Total Liabilities and Members’ Capital	$	266,989	$	307,771
Carrying value of the Trust’s investments in CDH CDO LLC	$	4,181	$	322

The summarized statement of operations of the Trust’s CDH CDO LLC venture is as follows (in thousands):

	For the Three Months Ended September 30, 2013			For the Three Months Ended September 30, 2012			For the Nine Months Ended September 30, 2013			For the Nine Months Ended September 30, 2012
Interest, dividends and discount accretion	$	4,469		$	4,688		$	12,654		$	13,362
Expenses
Interest expense		1,598			1,651			4,791			5,012
Fees and expenses paid to related party		250			250			750			750
General and administrative		328			304			891			964
Total expenses		2,176			2,205			6,432			6,726
Net investment income:		2,293			2,483			6,222			6,636
Net property income		(55	)		(5	)		(205	)		(282	)
Loss on sale of real estate		(2,909	)		—			(2,909	)		—
Gain on extinguishment of debt		4,827			—			4,827			—
Realized gain (loss) from investments		13,367			1,716			13,361			(1,042	)
Unrealized gain (loss) from investments		391			620			5,886			7,436
Net income		17,914			4,814			27,182			12,748
Trust’s share of net income	$	3,367		$	855		$	4,274		$	1,333

26

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

8. Debt

Mortgage Loans Payable

The Trust had outstanding non-recourse mortgage loans payable of $308,049,000 and $280,576,000 at September 30, 2013 and December 31, 2012, respectively. The mortgage loan payments of principal and interest are generally due monthly, quarterly or semi-annually and are collateralized by applicable real estate of the Trust.

On July 26, 2013 the Trust used cash on hand to fully satisfy the $14,943,000 balance outstanding on the first mortgage loan collateralized by its Amherst, New York property which was scheduled to mature in October 2013.

The Trust’s mortgage loans payable at September 30, 2013 and December 31, 2012 are summarized as follows (in thousands):

Location of Collateral	Maturity			Spread Over LIBOR (1)			Interest Rate at September 30, 2013			September 30, 2013		December 31, 2012
Memphis, TN		Aug 2014			Libor + 2.5	% (2)		3.00	%	$	13,197	$	13,408
Lisle, IL		Oct 2014			Libor + 2.5	% (3)		2.69	%		5,752		5,752
Chicago, IL		Apr 2015			—			6.25	%		8,619		8,700
Chicago, IL		Mar 2016			—			5.75	%		19,941		20,200
Houston, TX		Apr 2016			—			6.05	%		48,460		52,052
New York, NY		May 2016			Libor + 2.5	% (4)		3.50	%		51,982		51,982
Philadelphia, PA		May 2016			Libor + 2.0	% (5)		2.50	%		42,684		—
Greensboro, NC		Aug 2016			—			6.22	%		14,837		15,139
Lisle, IL		Mar 2017			—			5.55	%		5,488		5,543
Cerritos, CA		Jan 2017			—			5.07	%		23,153		23,184
Orlando, FL		Jul 2017			—			6.40	%		37,138		37,580
Plantation, FL		Apr 2018			—			6.45	%		10,717		10,811
Meriden, CT		Oct 2022			—			3.95	%		21,000		21,000
Churchill, PA (6)		Aug 2024			—			3.50	%		5,081		—
Amherst, NY			(7)		—			5.65	%		—		15,225
										$	308,049	$	280,576

(1) The one-month LIBOR rate at September 30, 2013 was 0.17885%.

(2) The loan has a LIBOR floor of 0.5% and an interest rate cap which caps LIBOR at 0.5%.

(3) The loan has an interest rate cap which caps LIBOR at 1%.

(4) The loan has a LIBOR floor of 1% and an interest rate cap which caps LIBOR at 1.75%.

(5) The loan has an interest rate swap which effectively fixes LIBOR at 0.5%.

(6) The loan was obtained on June 28, 2013. See Note 4 for details on this transaction.

(7) The loan was fully satisfied on July 26, 2013.

27

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Non-Recourse Secured Financing

The Trust’s non-recourse secured financings at September 30, 2013 and December 31, 2012 are summarized as follows (in thousands):

									Carrying Value
Collateral	Maturity		Spread Over LIBOR/ Prime			Interest Rate at September 30, 2013			September 30, 2013		December 31, 2012
Hotel Wales Loan		Oct 2014		LIBOR plus 1.25	% (1)		4.25	%	$	14,000	$	14,000
San Marbeya Loan		Jan 2015		—			4.85	%		15,150		15,150
									$	29,150	$	29,150

(1) The loan has a LIBOR floor of 3%.

Recourse Secured Financing

The Trust’s recourse secured financing was repaid in full at September 30, 2013. Details of the recourse secured financing are as follows (in thousands):

								Carrying Value
Collateral	Maturity		Spread Over LIBOR/Prime			Interest Rate at September 30, 2013		September 30, 2013		December 31, 2012
Queensridge Loan		Nov 2014		LIBOR plus 4	%		N/A	$	—	$	23,770
								$	—	$	23,770

Notes Payable

In conjunction with the loan modification on the property located in Cerritos, California the Trust assumed a $14,500,000 B Note that bears interest at 6.6996% per annum and requires monthly interest payments of approximately $12,000 with the balance of the interest accruing. The loan modification agreement provides for a participation feature whereby the B Note can be fully satisfied with proceeds from the sale of the property after the Trust receives a 9.0% priority return on its capital during a specified time period, as defined in the loan modification document. As of September 30, 2013 the carrying value of the participating B Note was $864,000 which approximates fair value. The inputs used in determining the estimated fair value of the Trust’s Notes Payable are categorized as Level 3 in the fair value hierarchy. See Note 18 for additional information regarding this property.

On October 15, 2012 an entity in which the Trust holds an interest and consolidates, 5400 Westheimer LP, executed a note payable to its partners in the amount of $1,600,000. The note bears interest at 15% per annum and matures on October 15, 2022. Since the Trust holds 50% of the loan, $800,000 of the note payable and associated interest is eliminated in consolidation for accounting purposes. The balance of the note as of September 30, 2013 was $800,000 which approximates fair value.

9. Revolving Line of Credit

The Trust has a revolving line of credit in the principal amount of $50,000,000 which bears interest at LIBOR plus 3% and has a maturity date of March 3, 2014 with an option to extend the maturity date to March 3, 2015. The Trust must comply with financial covenants on an ongoing basis. The covenants are tested as of the end of each quarter based upon results for that quarter. The Trust was in compliance of its financial covenants under its revolving line of credit as of September 30, 2013.

28

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The revolving line of credit is collateralized by certain approved assets and since it is recourse to the Trust it is effectively collateralized by all of the Trust’s assets. The revolving line of credit requires monthly payments of interest only. To the extent that the amounts outstanding under the facility are in excess of the borrowing base (as calculated per the terms of the loan agreement), the Trust is required to make a principal payment to reduce such excess. The Trust may prepay from time to time without premium or penalty and re-borrow amounts prepaid.

The outstanding balance under the facility was $0 at September 30, 2013 and December 31, 2012. The Trust is required to pay a commitment fee on the unused portion of the line, which amounted to approximately $44,000 and $131,000, respectively, for the three and nine months ended September 30, 2013, and approximately $44,000 and $106,000 for the three and nine months ended September 30, 2012, respectively.

10. Senior Notes Payable

In August 2012 the Trust issued a total $86,250,000 of its 7.75% Senior Notes (the “Senior Notes”) at an issue price of 100% of par value. The Trust received net proceeds of approximately $83,228,000, after deducting the underwriting discounts, commissions and offering expenses.

The Senior Notes mature on August 15, 2022 and bear interest at the rate of 7.75% per year, payable quarterly in arrears commencing November 15, 2012. The Trust may redeem the Senior Notes, in whole or in part, at any time or from time to time on or after August 15, 2015 at a redemption price in cash equal to 100% of the principal amount redeemed plus accrued and unpaid interest.

The Senior Notes rank senior to all of the Trust’s future indebtedness that by its terms is expressly subordinate to the Senior Notes, effectively making the Senior Notes senior to all of the Trust’s existing and future unsecured senior indebtedness to the extent of the collateral securing the Senior Notes and pari passu thereafter. The Senior Notes are structurally subordinated to all of the existing and future liabilities of Winthrop’s subsidiaries, including the Operating Partnership, but will have a security interest in the promissory note of the Operating Partnership to the Trust, which promissory note is pari passu with all existing and future unsecured senior indebtedness of the Operating Partnership.

11. Derivative Financial Instruments

The Trust has exposure to fluctuations in market interest rates. The Trust seeks to limit its risk to interest rate fluctuations through match financing on its assets as well as through hedging transactions.

The Trust’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Trust primarily uses interest rate caps and interest rate swaps as part of its interest rate risk management strategy relating to certain of its variable rate debt instruments.

The effective portion of changes in fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change, if any, in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2013 interest rate caps and swaps were used to hedge the variable cash flows associated with existing variable-rate debt. The Trust also assesses, both at its inception and on an ongoing basis, whether the hedging instrument is highly effective in achieving offsetting changes in the cash flows attributable to the hedged item. The Trust has recorded changes in fair value related to the effective portion of its interest rate hedges designated and qualifying as cash flow hedges as comprehensive loss totaling $150,000 and $20,000 for the three and nine months ended September 30, 2013, and $16,000 and $73,000 for the three and nine months ended September 30, 2012, respectively.

29

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The table below presents information about the Trust’s interest rate caps and interest rate swaps that are included on the consolidated balance sheet that were designated as cash flow hedges of interest rate risk at September 30, 2013 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge in Other Comprehensive Income			Unrealized (Loss) Gain on Hedge in Other Comprehensive Income			Change in Hedge Valuations Included in Other Comprehensive Income for the Three Months Ended September 30, 2013			Change in Hedge Valuations Included in Other Comprehensive Income for the Nine Months Ended September 30, 2013
Aug 2014		0.50	%	$	13,197	$	22	$	1		$	—		$	(3	)	$	(4	)
May 2016		0.50	%	$	42,922	$	—	$	(15	)	$	(15	)	$	(147	)	$	(15	)

The table below presents information about the Trust’s interest rate caps that were not designated as cash flow hedges at September 30, 2013 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value		Change in Cap Valuations Included in Interest Expense for the Three Months Ended September 30, 2013		Change in Cap Valuations Included in Interest Expense for the Nine Months Ended September 30, 2013
May 2013		1.25	%	$	—	$	196	$	—	$	—	$	—
May 2014		1.75	%		51,982		434		—		—		—
Oct 2014		1.00	%		5,753		174		—		1		1

The table below presents information about the Trust’s interest rate caps and interest rate swaps that are included on the consolidated balance sheet that were designated as cash flow hedges of interest rate risk at September 30, 2012 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge in Other Comprehensive Income			Unrealized Gain on Hedge in Other Comprehensive Income		Change in Hedge Valuations Included in Other Comprehensive Income for the Three Months Ended September 30, 2012			Change in Hedge Valuations Included in Other Comprehensive Income for the Nine Months Ended September 30, 2012
Aug 2014		0.50	%	$	13,478	$	22	$	—		$	—	$	—		$	—
Oct 2014		1.00	%	$	21,000	$	174	$	(165	)	$	—	$	(17	)	$	(77	)

30

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The table below presents information about the Trust’s interest rate caps that were not designated as cash flow hedges at September 30, 2012 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value		Change in Cap Valuations Included in Interest Expense for the Three Months Ended September 30, 2012		Change in Cap Valuations Included in Interest Expense for the Nine Months Ended September 30, 2012
May 2013		1.25	%	$	51,982	$	196	$	—	$	—	$	18
May 2014		1.75	%		51,982		434		1		5		46

12. Non-controlling Interests

Houston, Texas Operating Property – During the first quarter of 2013, a wholly-owned subsidiary of the Trust acquired a quarter-unit limited partner interest, representing 1% of 5400 Westheimer Holding LP (“Westheimer”), for a purchase price of $75,000. The Trust accounted for this purchase as an equity transaction recording the difference in the $127,000 carrying value of the acquired non-controlling interest and the purchase price as a $52,000 increase in paid-in capital. During the second quarter of 2013, the wholly-owned subsidiary acquired an additional 1% interest in Westheimer for a purchase price of $75,000. The Trust accounted for this purchase as an equity transaction recording the difference in the $126,000 carrying value of the acquired non-controlling interest and the purchase price as a $51,000 increase in paid-in capital. As a result, the Trust now owns 32% of Westheimer.

One East Erie/Ontario Operating Property – On June 1, 2012 the Trust purchased from Marc Realty its 20% non-controlling interest in FT-Ontario Holdings LLC for $5,850,000. The Trust accounted for this purchase as an equity transaction recording the difference in the $363,000 carrying value of the acquired non-controlling interest and the purchase price as a $5,487,000 reduction in paid-in capital.

Deer Valley Operating Property – On March 29, 2012 the Trust purchased the 3.5% non-controlling ownership interest of its consolidated joint venture, WRT-DV LLC, for $400,000. The Trust accounted for the purchase as an equity transaction recording the difference in the $192,000 carrying value of the acquired non-controlling interest and the purchase price as a $208,000 reduction in paid-in capital.

The changes in the Trust’s ownership interest in the subsidiaries impacted consolidated equity during the period are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Net income attributable to Winthrop Realty Trust	$	11,728	$	15,108	$	33,848	$	26,719
Increase (decrease) in Winthrop Realty Trust’s paid in capital related to purchases of non-controlling interests		—		—		103		(5,695	)
Changes from net income attributable to Winthrop Realty Trust and transfers (to) from non-controlling interests	$	11,728	$	15,108	$	33,951	$	21,024

31

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

13. Discontinued Operations

During 2012 the Trust’s net lease retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana were sold and are included in discontinued operations. During 2013 the Trust’s net lease retail properties in Denton, Texas and Seabrook, Texas and its office properties located in Deer Valley, Arizona and Andover, Massachusetts were sold and are included in discontinued operations for all periods presented. The Trust’s office property located at 701 Arboretum in Lisle, Illinois was classified as held for sale as of September 30, 2013 and is included in discontinued operations for all periods presented.

Results for discontinued operations for the three and nine months ended September 30, 2013 and 2012 are as follows (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30, 2013			September 30, 2012			September 30, 2013			September 30, 2012
Revenues	$	10		$	1,263		$	1,598		$	4,261
Termination fee income		—			592			—			592
Operating expenses		(94	)		(675	)		(1,028	)		(2,016	)
Interest expense		—			(685	)		—			(842	)
Depreciation and amortization		(21	)		(657	)		(589	)		(1,648	)
Gain on sale of assets		1,421			945			10,948			945
Impairment loss		(2,750	)		(698	)		(2,904	)		(698	)
(Loss) income from discontinued operations	$	(1,434	)	$	85		$	8,025		$	594

14. Commitments and Contingencies

In addition to the initial purchase price of certain loans and operating properties, the Trust has future funding commitments attributable to its 450 W 14^th Street property, 701 Seventh Avenue investment and 1515 Market Street loan which total approximately $88,913,000 at September 30, 2013. The Trust has a ground lease related to its property located at 450 W 14^th Street, New York, New York which expires on June 1, 2053. As of September 30, 2013, in connection with the ground lease, the Trust has commitments of $337,000; $1,405,000; $1,463,000; $1,592,000; $1,656,000 and $109,419,000 for the years ended December 31, 2013, 2014, 2015, 2016, 2017 and thereafter, respectively.

The Trust is involved from time to time in litigation on various matters, including disputes with tenants and disputes arising out of agreements to purchase or sell properties. Given the nature of the Trust’s business activities, these lawsuits are considered routine to the conduct of its business. The result of any particular lawsuit cannot be predicted because of the very nature of litigation, the litigation process and its adversarial nature, and the jury system. The Trust does not expect that the liabilities, if any, that may ultimately result from such legal actions will have a material adverse effect on its financial condition or results of operations.

Churchill, Pennsylvania – In 2011 the Trust was conveyed title to the land underlying the Churchill, Pennsylvania property. Prior to the conveyance of the land, a Phase II environmental study was performed. The study found that there were certain contaminants at the property all of which were within permitted ranges. In addition, given the nature and use of the property currently and in the past, it is possible that there may be contamination that could require remediation. The Trust believes that based on applicable law and existing agreements any such remediation costs would be the responsibility of a prior owner or tenant.

In connection with the settlement agreement entered into on September 30, 2011 with CBS Corporation (“CBS”), the Trust was required to market the Churchill, Pennsylvania property for sale and to the extent the property was sold or the Trust received a responsible offer as defined in the settlement agreement from a credit worthy third party in an amount in excess of $6,500,000, net of closing costs, the Trust is required to pay to CBS the sum of 50% of such net proceeds in excess of $6,500,000. In this

32

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FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

regard, the Trust received an offer on the portion of the property leased to Westinghouse Electric Company LLC which would have resulted in net proceeds in excess of $6,500,000. The Trust did not pursue the sale of the property and as of September 30, 2013 recorded a payable in the amount of $150,000 representing the 50% excess due to CBS. If certain conditions, which are not considered probable as of September 30, 2013, are met in the future, the Trust could be liable to pay an additional contingent fee of approximately $340,000.

15. Related-Party Transactions

FUR Advisors – The activities of the Trust are administered by FUR Advisors LLC (“FUR Advisors”) pursuant to the terms of the Advisory Agreement between the Trust and FUR Advisors. FUR Advisors is controlled by and partially owned by the executive officers of the Trust. Pursuant to the terms of the Advisory Agreement, FUR Advisors is responsible for providing asset management services to the Trust and coordinating with the Trust’s shareholder transfer agent and property managers. FUR Advisors is entitled to receive a base management fee and in addition, FUR Advisors or its affiliate is also entitled to receive property and construction management fees subject to the approval of the independent Trustees of the Trust.

The following table sets forth the fees and reimbursements paid by the Trust for the three and nine months ended September 30, 2013 and 2012 to FUR Advisors and Winthrop Management L.P. (“Winthrop Management”) (in thousands):

	For the Three Months Ended				For the Nine Months Ended
	September 30, 2013		September 30, 2012		September 30, 2013		September 30, 2012
Base Asset Management	$	2,309	$	2,316	$	6,866	$	6,641
Property Management		304		193		895		506
Construction Management		112		33		381		97
	$	2,725	$	2,542	$	8,142	$	7,244

Base Asset Management Fee – FUR Advisors is entitled to receive a base management fee of 1.5% of equity as defined in the Advisory Agreement and in certain instances, a termination fee and/or an incentive fee in accordance with the terms of the Advisory Agreement. Additionally, FUR Advisors receives a fee equal to 0.25% of any equity contributions by unaffiliated third parties to a venture managed by the Trust.

Property Management and Construction Management – Winthrop Management, an affiliate of FUR Advisors and the Trust’s executive officers, assumed property management responsibilities for various properties owned by the Trust. Winthrop Management receives a property management fee and construction management fee pursuant to the terms of individual property management agreements. Construction management fees are capitalized in accordance with GAAP.

At September 30, 2013 $2,309,000 payable to FUR Advisors and $383,000 payable to Winthrop Management were included in related party fees payable.

16. Restricted Share Grants

On February 1, 2013 the Board approved the issuance of 600,000 shares of Restricted Common Shares (“Restricted Shares”) to the Trust’s Advisor, 500,000 of which were subject to the approval of the shareholders to the increase in the number of shares issuable under the Trust’s 2007 Stock Option Plan (the “SOP”). The initial 100,000 Restricted Shares were issued on February 28, 2013. At the May 21, 2013 annual shareholders meeting the increase in shares issuable under the SOP from 100,000 to 1,000,000 was approved by the requisite number of shareholders and the remaining 500,000 shares were issued on May 28, 2013. The Restricted Shares are subject to forfeiture through December 31, 2017. Except in limited circumstances, if the holder of the Restricted Shares does not remain in continuous employment with FUR Advisors or its affiliate through December 31, 2017 (the “Forfeiture Period”), all of their rights to the Restricted Shares and the associated dividends held in escrow will be forfeited. Dividends will be paid on the issued Restricted Shares in conjunction with dividends on Common Shares not issued under the SOP. However, the recipients of the Restricted Shares will only receive dividends as if the shares vested quarterly over the Forfeiture Period, with the remaining dividends to be placed into escrow and paid to the holders at the expiration of the Forfeiture Period.

33

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Until the awards are no longer subject to forfeiture, the Trust measures stock-based compensation expense at each reporting date for any changes in fair value and recognizes the expense prorated for the portion of the requisite service period completed. Accordingly, the Trust recognized $346,000 and $557,000 in non-cash compensation expense for the three and nine months ended September 30, 2013. As of September 30, 2013 there were no forfeitures of Restricted Shares.

17. Reportable Segments

The Financial Accounting Standards Board (“FASB”) guidance on segment reporting establishes standards for the way that public business enterprises report information about operating segments in financial statements and requires that those enterprises report selected financial information about operating segments in interim financial reports issued to shareholders. Based on the Trust’s method of internal reporting, management determined that it has three operating segments: (i) the ownership of operating properties; (ii) the origination and acquisition of loans and debt securities secured directly or indirectly by commercial and multi-family real property – collectively, loan assets; and (iii) the ownership of equity and debt securities in other REITs – REIT securities.

The operating properties segment includes all of the Trust’s wholly and partially owned operating properties. The loan assets segment includes all of the Trust’s activities related to real estate loans including loans receivable, loan securities and equity investments in loan related entities. The REIT securities segment includes all of the Trust’s activities related to the ownership of securities in other publicly traded real estate companies. In addition to its three business segments, the Trust reports non-segment specific income and expense under corporate income (expense).

The following table summarizes the Trust’s assets by business segment for the periods ended September 30, 2013 and December 31, 2012 (in thousands):

	September 30, 2013		December 31, 2012
Assets
Operating properties	$	630,666	$	562,822
Loan assets		154,265		239,534
REIT securities		7,074		19,694
Corporate
Cash and cash equivalents		165,762		97,682
Restricted cash		7,387		—
Accounts receivable and prepaids		574		336
Deferred financing costs		2,757		3,095
Total Assets	$	968,485	$	923,163
Capital Expenditures
Operating Properties	$	2,835	$	12,417

The Trust and its management assess and measure segment operating results and allocate resources based on a performance measure referred to as operating income. Operating income for each segment is presented as all items of income and expense directly derived from or incurred by each business segment before depreciation, amortization and interest expense. Interest on cash reserves, general and administrative expenses and other non-segment specific income and expense items are reported under corporate income (expense).

34

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FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

The following table presents a summary of revenues from operating properties, loan assets and REIT securities and expenses incurred by each segment for the three and nine months ended September 30, 2013 and 2012 (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30,			September 30,			September 30,			September 30,
	2013			2012			2013			2012
Operating Properties
Rents and reimbursements	$	15,099		$	12,224		$	45,026		$	35,022
Operating expenses		(5,272	)		(3,335	)		(14,697	)		(10,643	)
Real estate taxes		(1,705	)		(1,160	)		(4,184	)		(3,116	)
Equity in earnings of preferred equity investment in Fenway-Wateridge		189			—			576			—
Equity in loss of Sealy Northwest Atlanta		(130	)		(109	)		(363	)		(273	)
Equity in loss of Sealy Newmarket		—			(704	)		—			(2,171	)
Equity in income (loss) of Marc Realty investment		(26	)		377			(17	)		33
Equity in income (loss) of WRT-Elad		905			(57	)		1,515			458
Equity in income of Vintage		2,525			1,392			7,142			2,326
Equity in income of 701 Seventh Avenue		1,055			—			2,375			—
Equity in income of Fenway-Wateridge		50			—			133			—
Equity in income of Mentor		12			12			45			18
Equity in loss of Atrium Mall		(31	)		—			(31	)		—
Equity in income of F-II Co-invest		—			—			—			232
Operating properties operating income		12,671			8,640			37,520			21,886
Depreciation and amortization expense		(4,923	)		(4,416	)		(14,703	)		(11,623	)
Interest expense		(3,272	)		(3,126	)		(11,131	)		(9,230	)
Settlement expense		(16	)		—			(150	)		—
Operating properties net income		4,460			1,098			11,536			1,033
Loan Assets
Interest income		3,011			2,985			10,912			8,130
Discount accretion		806			425			2,283			5,984
Unrealized gain on loan securities carried at fair value		—			371			215			447
Equity in income of ROIC Riverside		—			238			—			706
Equity in loss of ROIC Lakeside Eagle		(7	)		(16	)		(22	)		(32	)
Equity in income of Concord Debt Holdings		2,970			35			3,041			386
Equity in income of CDH CDO		265			136			415			670
Equity in income of Concord Debt Holdings (1)		20			2			49			30
Equity in income of CDH CDO (1)		3,367			855			4,274			1,333
Equity in income of WRT-Stamford		256			232			701			548
Equity in income (loss) of SoCal Office Loan Portfolio		—			10,348			(2	)		9,710
Equity in (loss) income of RE CDO Management		(51	)		18			3,710			46
Equity in income of 10 Metrotech		2,676			50			3,284			31
Loan assets operating income		13,313			15,679			28,860			27,989
General and administrative expense		(2	)		(15	)		(37	)		(40	)
Interest expense		(335	)		(336	)		(1,562	)		(1,004	)
Loan assets net income		12,976			15,328			27,261			26,945
REIT Securities
Interest and dividends		100			312			350			904
(Loss) gain on sale of securities carried at fair value		(31	)		—			(133	)		41
Unrealized gain (loss) on securities carried at fair value		—			3,113			(142	)		7,254
REIT securities net income		69			3,425			75			8,199
Net income from segments before corporate income (expense)		17,505			19,851			38,872			36,177
Reconciliations to GAAP Net Income:
Corporate Income (Expense)
Interest income		101			242			286			433
Interest expense		(1,828	)		(954	)		(5,482	)		(1,326	)
General and administrative		(1,111	)		(767	)		(3,021	)		(2,407	)
Related party fees		(2,309	)		(2,316	)		(6,866	)		(6,641	)
Transaction costs		(106	)		(30	)		(158	)		(335	)
State and local taxes		(85	)		(64	)		(227	)		(211	)
Income from continuing operations		12,167			15,962			23,404			25,690
(Loss) income from discontinued operations attributable to Winthrop Realty Trust		(1,434	)		85			8,025			594
Net income		10,733			16,047			31,429			26,284
Net loss (income) attributable to non-controlling interest		995			(939	)		2,419			435
Net Income Attributable to Winthrop Realty Trust	$	11,728		$	15,108		$	33,848		$	26,719

(1) Represents the interest acquired from Lexington Realty Trust on May 1, 2012.

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FORM 10-Q SEPTEMBER 30, 2013

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

18. Variable Interest Entities

Consolidated Variable Interest Entities

Consolidated variable interest entities are those where the Trust is the primary beneficiary of a variable interest entity. The primary beneficiary is the party that has a controlling financial interest in the VIE, which is defined by the entity having both of the following characteristics: 1) the power to direct the activities that, when taken together, most significantly impact the VIE’s performance, and 2) the obligation to absorb losses and right to receive the returns from the VIE that could be significant to the VIE. The Trust has identified two consolidated variable interest entities.

Although the Trust holds 100% of the equity interests in the Cerritos office property, the B-Note collateralized by the property enables the senior lender to participate in the entity’s expected residual returns, the Trust will need to fund expected losses and infuse additional capital to lease and stabilize property operations. Through its equity interests in the property, the Trust has both the right to the returns of the entity and power to direct the activities of Cerritos. Accordingly, the Trust is the primary beneficiary and has consolidated Cerritos since its acquisition on October 5, 2012.

At September 30, 2013 the carrying value of the Cerritos assets and liabilities included: land and building of $22,079,000 net of accumulated depreciation of $830,000; lease intangibles of $3,435,000 net of accumulated amortization of $627,000; mortgage debt comprised of an A Note totaling $23,153,000 and participating B Note totaling $864,000. The outstanding mortgage debt collateralized by the property is non-recourse to the Trust.

In connection with the loan modification of 1515 Market Street, the Trust acquired a 49% equity interest in the entity that holds the property. This equity interest includes the general partner interest. The Trust determined that the 1515 Market Street entity was a variable interest entity due to the lender’s right to participate in the entity’s expected residual returns. Through its equity interest, the Trust has both the right to the returns of the entity and power to direct the activities of 1515 Market Street. Accordingly, the Trust is the primary beneficiary and has consolidated the property effective February 1, 2013.

At September 30, 2013 the carrying value of the 1515 Market Street assets and liabilities include land and building of $42,950,000 net of accumulated depreciation of $590,000 and lease intangibles of $16,624,000 net of accumulated amortization of $1,566,000 and a first mortgage note of $42,683,000. A second mortgage note of $35,040,000 is eliminated in consolidation. The outstanding mortgage debt collateralized by the property is non-recourse to the Trust.

The fair value of the assets and liabilities of the consolidated property was calculated by an independent third party valuation firm and reviewed by management. The following table summarizes the allocation of the aggregate purchase price of 1515 Market Street as of February 1, 2013 (in thousands):

	1515 Market Street
Land	$	18,627
Building		23,159
Other improvements		73
Tenant improvements		1,407
Lease intangibles		14,943
Above market lease intangibles		2,867
Net working capital acquired		1,132
Below market lease intangibles		(620	)
Other liabilities		(1,299	)
Long term liabilities assumed		(60,279	) (1)
Net assets acquired	$	10

(1) Long term liabilities assumed as part of this transaction remain legally outstanding but are eliminated in consolidation with the Trust’s loan asset purchased on December 12, 2012.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Intangible assets acquired and intangible liabilities assumed for 1515 Market Street at February 1, 2013 consisted of the following (in thousands):

	Carrying Value			Weighted Average Amortization Period (years)
Intangible assets:
In place lease intangibles	$	6,542			6.2
Above market lease intangibles		2,867			5.8
Tenant relationship value		7,388			13.3
Lease commissions, legal and marketing fees		1,013			5.4
Total	$	17,810			9.0
Intangible liabilities:
Below market lease intangibles	$	(620	)		4.2

For the three and nine months ended September 30, 2013, 1515 Market Street contributed revenue of approximately $2,449,000 and $6,942,000, respectively, and contributed net income of approximately $514,000 and $1,586,000, respectively.

The accompanying unaudited pro forma information for the three and nine months ended September 30, 2013 and 2012 is presented as if the consolidation of 1515 Market Street on February 1, 2013 had occurred on January 1, 2012. This unaudited pro forma information is based upon historical consolidated financial information and should be read in conjunction with the consolidated financial statements and notes thereto. This unaudited pro forma information does not purport to represent what the actual results of operations of the Trust would have been had the above occurred, nor do they purport to predict the results of operations of future periods.

Pro forma	For the Three Months Ended				For the Nine Months Ended
(In thousands, except for per share data)	September 30,				September 30,
	2013		2012		2013		2012
Total revenue	$	18,842	$	18,151	$	59,502	$	57,913
Consolidated net income	$	10,133	$	16,010	$	30,797	$	26,591
Net income attributable to Winthrop Realty Trust	$	11,128	$	15,660	$	33,489	$	28,207
Per common share data - basic		0.25		0.39		0.76		0.66
Per common share data - diluted		0.25		0.39		0.76		0.66

Variable Interest Entities Not Consolidated

Equity Method and Preferred Equity Investments – The Trust has reviewed its various equity method and preferred equity investments and identified 11 investments for which the Trust holds a variable interest in a VIE. Of these 11 interests there are seven investments for which the underlying entities do not have sufficient equity at risk to permit them to finance their activities without additional subordinated financial support. There are four additional entities for which the VIE assessment was primarily based on the fact that the voting rights of the equity holders are not proportional to their obligations to absorb expected losses and rights to receive residual returns of the legal entities. These 11 unconsolidated joint ventures are those where the Trust is not the primary beneficiary of a VIE.

Loans Receivable and Loan Securities – The Trust has reviewed its loans receivable and loan securities and four of these assets have been identified as variable interests in a VIE because the equity investment at risk at the borrowing entity level is not considered sufficient for the entity to finance its activities without additional subordinated financial support. There is one investment where the equity holders lack the right to receive returns due to the lender’s participation interest in the debt.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Certain loans receivable and loan securities which have been determined to be VIEs are performing assets, meeting their debt service requirements. In these cases the borrower holds legal title to the real estate collateral and has the power to direct the activities that most significantly impact the economic performance of the VIE, including management and leasing activities. In the event of default under these loans, the Trust only has protective rights and its obligation to absorb losses is limited to the extent of its loan investment. The borrower has been determined to be the primary beneficiary for these performing assets.

The Trust has determined that it does not currently have the power to direct the activities of the properties collateralizing any of its loans receivable and loan securities. For this reason, management believes that it does not control, nor is it the primary beneficiary of these properties. Accordingly, the Trust accounts for these investments under the guidance for loans receivable and real estate debt investments.

19. Subsequent Events

Sealy Airpark Nashville – Foreclosure – On October 7, 2013 the lender foreclosed on the loan that was collateralized by the venture’s property located in Nashville, Tennessee. The Trust did not recognize a gain or loss in connection with the foreclosure as the investment was carried at $0 for financial reporting purposes.

WRT-Fenway Wateridge – Mortgage Loan – On October 15, 2013 the venture obtained a $7,000,000 first mortgage loan on its San Diego, California property. The loan bears interest at the greater of 6%, or LIBOR plus 4.5% per annum, requires monthly payments of interest only and matures on November 1, 2016. The venture purchased an interest rate cap which caps LIBOR at 2.5%. In connection with the financing, the Trust received a distribution of $6,255,000 in partial redemption of its preferred equity investment. The Trust retains the balance of its preferred equity interest as well as a 50% equity interest in the venture.

WRT-Elad Equity – Mortgage Loan Refinancing – On October 18, 2013 the venture which owns the property known as the Sullivan Center located at One South State Street, Chicago, Illinois obtained a new $113,500,000 first mortgage loan. The loan bears interest at a rate of 3.95% per annum, requires monthly payments of interest only and matures on November 6, 2018. The proceeds from the loan were used to repay the existing $110,550,000 first mortgage loan which bore interest at a rate of 11.0% per annum.

Summit Pointe Apartments – Equity Investment – On October 25, 2013 the Trust contributed $4,933,000 for an 80% preferred equity interest in a newly formed venture. On the same date, the venture acquired a 184 unit garden apartment complex known as Summit Pointe Apartments located in Oklahoma City, Oklahoma for a gross purchase price of $14,500,000. In connection with the acquisition, the venture assumed an existing $9,248,000 first mortgage loan. The loan bears interest at a rate of 5.7% per annum, requires monthly payments of principal and interest and matures in February 2021. Management for the venture has not finalized the acquisition accounting and therefore is not able to provide the disclosures otherwise required by ASC 805.

Pursuant to the terms of the venture agreement, the Trust will hold a preferred equity interest which entitles it to an 8% preferred return from cash flow and, upon disposition of the property, a minimum preferred return equal to a 12% IRR.

Luxury Residential – Property Acquisition – On October 31, 2013 the Trust closed on its acquisition of four newly constructed Class A luxury apartment buildings for an aggregate purchase price of $246,000,000. The properties are located in Phoenix, Arizona; Stamford, Connecticut; Houston, Texas and San Pedro, California. The acquisition was funded with a $150,000,000 first mortgage loan which is cross collateralized by all four properties. The loan bears interest at a rate of LIBOR plus 2%, requires monthly payments of interest only and matures on October 31, 2016 with two one year extension options. The balance of the purchase was funded from cash on hand. Management has not finalized the acquisition accounting and therefore is not able to provide the disclosures otherwise required by ASC 805.

On November 6, 2013, New Valley LLC (“New Valley”) contributed approximately $16,350,000 to the entity that acquired the properties in exchange for an indirect 16.3% interest in the properties. Winthrop retained the balance and has the right to make all decisions with respect to each of the properties other than the Stamford, Connecticut property, subject to obtaining New Valley’s consent to certain major decisions. With respect to the Stamford, Connecticut property, prior to November 6, 2016 the consent of New Valley is required on all matters other than those that are administrative in nature. New Valley has the right at any time after November 6, 2015 (or in certain instances prior thereto), but on or prior to November 6, 2016, to have its interest in the venture redeemed for a 50% interest in the Stamford, Connecticut property.

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ITEM 2 – MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Certain statements contained herein constitute forward-looking statements as such term is defined in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements are not guarantees of performance. They involve risks, uncertainties and assumptions. Our future results, financial condition and business may differ materially from those expressed in these forward-looking statements. You can find many of these statements by looking for words such as “approximates,” “believes,” “expects,” “anticipates,” “intends,” “plans,” “would,” “may” or similar expressions in this Quarterly Report on Form 10-Q. These forward-looking statements are subject to numerous assumptions, risks and uncertainties. Many of the factors that will determine these items are beyond our ability to control or predict. Factors that may cause actual results to differ materially from those contemplated by the forward-looking statements include, but are not limited to, those set forth in our Annual Report on Form 10-K for the year ended December 31, 2012 under “Forward Looking Statements” and “Item 1A – Risk Factors,” as well as our other filings with the Securities and Exchange Commission. For these statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. We expressly disclaim any responsibility to update forward-looking statements, whether as a result of new information, future events or otherwise. Accordingly, investors should use caution in relying on forward-looking statements, which are based on information, judgments and estimates at the time they are made, to anticipate future results or trends.

Management’s Discussion and Analysis of Financial Condition and Results of Operations include a discussion of our unaudited consolidated interim financial statements and footnotes thereto for the three and nine months ended September 30, 2013 as compared with the three and nine months ended September 30, 2012. These unaudited interim financial statements are prepared in conformity with accounting principles generally accepted in the United States of America 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 financial statements and the amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

Overview

As a diversified REIT, we operate in three strategic segments: (i) operating properties; (ii) loan assets; and (iii) REIT securities. As value investors we focus and aggressively pursue our investment activity in the segments we believe will generate the greatest overall return to us given market conditions at the time. In prior years we have demonstrated our ability to adjust our business plan to capitalize on evolving marketing conditions both with respect to business segment and capital structure. We will continue to invest in opportunities which we believe will yield superior risk adjusted returns. These investments may have returns weighted towards the back end of the invested life which may negatively impact current earnings. Further, we continue to review our existing portfolio for follow-on opportunities and will seek to timely realize returns on such investments subject to any limitations we determine are necessary to avoid being subject to the REIT 100% tax on gains from dealer transactions under the Internal Revenue Code.

In connection with our strategy, in certain instances, we seek to acquire assets through joint ventures which allows us to employ third party co-investment capital to maximize diversification of risk and reduce capital concentration and in certain instances leverage off of our joint venture partner’s experience and expertise in specific geographic areas and/or specific asset types.

We continue to review our portfolio with a view towards divesting investments, subject to REIT rule limitations, as they mature in value to the point where these investments may be unlikely to achieve better than market returns and we redeploy capital to what we believe to be higher yielding opportunities.

We invested $31,003,000 in operating property assets and $30,000,000 in new loan assets during the third quarter of 2013. In addition, during the quarter we committed to invest an additional $225,500,000 to complete the acquisition of a garden apartment complex and four luxury residential property assets. See Item 1, Note 4 for a description of our investments that

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closed during the quarter and Item 1, Note 19 for a description of our acquisitions which closed subsequent to September 30, 2013. During the third quarter of 2013 we received $29,960,000 in net proceeds from our issuance of Common Shares, $13,980,000 in return of capital distributions from our equity investments, $4,905,000 in net proceeds from the sale of our Denton, Texas and Seabrook, Texas properties and $5,837,000 from loan repayments. See additional details in our “Liquidity and Capital Resources” section below.

Loan Assets

During the third quarter of 2013 we closed on an agreement to acquire Elad’s 50% interest in the WRT-Elad Lender joint venture, for $30,000,000, which is in addition to our previously held joint venture interest of 50%. WRT-Elad Lender holds a mezzanine loan which is indirectly collateralized by the property located at One South State Street, Chicago, Illinois which we refer to as the Sullivan Center. The Sullivan Center mezzanine loan held by the joint venture had an outstanding balance of principal plus accrued interest of approximately $56,150,000 at the time of our additional investment. The mezzanine loan bears interest at 15% per annum and requires monthly payments of interest only. In February 2013 WRT-Elad Lender entered into a forbearance agreement with the borrower allowing the borrower to defer debt service payments on the mezzanine loan through October 9, 2013. To the extent debt service payments were not made, the unpaid debt service payments were added to the outstanding principal balance. In connection with the refinancing of the Sullivan Center first mortgage loan as discussed below, it is anticipated that debt service payments on the mezzanine loan will re-commence on November 9, 2013 as scheduled.

Also during the quarter, the $40,000,000 loan held by our 10 Metrotech Loan joint venture was paid off at par. The venture, of which we own 33.33%, originally acquired the loan in August 2012 for $32,500,000. We received a distribution of $13,333,000 in connection with the payoff of the loan.

Additionally, two of the underlying loans held by our Concord ventures paid off during the quarter. In July 2013 the loan collateralized by the property commonly referred to as Thanksgiving Tower located in Dallas, Texas was satisfied. In August 2013 the loan collateralized by the property referred to as One Riverwalk located in San Antonio, Texas was satisfied. The Trust received an aggregate distribution of $6,470,000 during the quarter as a result of the loan payoffs. As a result of the Thanksgiving Tower loan repayment, Concord Real Estate CDO 2006-1, Ltd, an entity in which we own an effective 49.67% equity interest, satisfied its leverage ratio test and again began making distributions to the CDO’s junior tranches of bonds and its equity holder. It is expected that so long as the leverage ratio tests remain satisfied we will receive distributions of approximately $300,000 per month.

During the quarter we received $5,571,000 from the sale of condominium units that collateralize our Queensridge Tower loan receivable.

Operating Properties

Consolidated Operating Properties

During 2013 we have seen increases in our operating income from our operating properties as a result of favorable operating results from same store properties, that is, properties held during both nine month periods, complemented by our new store property operating results, that is, properties not held during both complete nine month periods. The full impact of the improvement is not reflected in continuing operations as certain of our improved properties were sold and are classified as discontinued operations. See our Results of Operations section below for details of our consolidated properties net income. As of September 30, 2013 our consolidated properties were approximately 88.6% leased compared to approximately 89.6% leased at December 31, 2012.

In addition to the sale of our Andover, Massachusetts office property in March 2013 and the sale of our Deer Valley, Arizona property in June 2013, during the third quarter of 2013 we sold the following properties:

Denton, Texas – On July 2, 2013 we sold our Denton, Texas property to an independent third party for gross sale proceeds of $1,850,000. After costs and pro-rations, we received net proceeds of approximately $1,703,000. No gain or loss was recorded on the sale of the property. The property was classified as held for sale at June 30, 2013 and the results of operations for the property have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

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Seabrook, Texas – On August 1, 2013 we sold our Seabrook, Texas property to an independent third party for gross sale proceeds of $3,300,000. After costs and pro-rations, we received net proceeds of approximately $3,202,000 and recorded a gain of $1,428,000 on the sale of the property. The results of operations for all periods have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

Equity Investments

Vintage Housing – During the three and nine months ended September 30, 2013, we recorded net income from our investment in Vintage Housing of $2,525,000 and $7,142,000, respectively, and received cash distributions of $1,705,000 and $3,970,000, respectively. The Vintage properties were 97% occupied at August 31, 2013. We have elected to recognize our earnings on a one month lag.

WRT-Elad Lender – Sullivan Center – All cash flow at the Sullivan Center property was trapped by the first mortgage lender. As a result, the property was unable to meet its debt service payments on the mezzanine loan held by our venture. Equity LP, our venture which holds a future ownership interest in the property, and Lender LP, collectively our Sullivan JV, entered into a forbearance agreement with the borrower and non-controlling interest owner at our Sullivan Center property. As a result, the Sullivan JV increased its future ownership interest in the property from 65% to 70%. In addition, the Sullivan JV is entitled to receive a $1,400,000 modification fee in November 2013. If the payment is not paid, the Sullivan JV’s future ownership interest will increase to 76%.

On October 18, 2013 the property owner obtained a new $113,500,000 first mortgage loan. The loan bears interest at a rate of 3.95% per annum, requires monthly payments of interest only and matures on November 6, 2018. The proceeds from the loan were used to repay the existing $110,550,000 first mortgage loan which bore interest at a rate of 11.0% per annum. The new loan eliminates the requirement for the cash trap with the lender and it is anticipated that the property will re-commence making payments on the mezzanine loan on November 9, 2013 in accordance with the terms of the forbearance agreement.

We recognized $904,000 and $1,515,000 of income on our investment during the three and nine months ended September 30, 2013. The Sullivan Center was 83% leased at August 31, 2013. We have elected to recognize our earnings on a one month lag.

701 Seventh Avenue – In October 2012 we entered into a joint venture to acquire and redevelop a 120,000 square foot property and associated air rights located at 701 Seventh Avenue, New York, New York. We made an initial investment of $28,971,000. On July 8, 2013 we agreed to increase our percentage of capital contributions to 70%, increasing, if and when permitted by the lender, to 80% and to participate in the future hotel development. In doing so, on July 23, 2013 the Trust made an additional $4,927,000 capital contribution to the joint venture and increased our commitment to invest up to $120,000,000 in the aggregate. As of September 30, 2013, we have invested a total of $36,170,000 in the venture. During October 2013 we invested an additional $16,686,000.

During the three and nine months ended September 30, 2013, we recorded net income from our investment in 701 Seventh Avenue of $1,055,000 and $2,375,000, respectively and received cash distributions of $671,000 and $1,866,000, respectively. We have elected to recognize our earnings on a three month lag.

WRT-Fenway Wateridge – On December 21, 2012 we entered into a venture which acquired for $9,200,000 a 62,152 square foot class B office building located in Sorrento Mesa (San Diego), California. We contributed a total of $7,682,000 of which $6,000,000 is a preferred equity investment which entitles us to a 12% priority return to be paid 8% currently from operating cash flow with the remaining 4% deferred. During the three and nine months ended September 30, 2013, we recorded net income from the investment of $239,000 and $709,000 and received cash distributions of $0 and $123,000. We have elected to recognize our earnings on a one month lag. In October 2013 the venture obtained a first mortgage loan in the amount of $7,000,000 resulting in a distribution to us of $6,255,000 in connection with our preferred equity investment. Subsequent to the distribution, our preferred equity balance is $229,000.

Sealy – Two of the investment properties are located in Atlanta, Georgia, (Northwest Business Park and Newmarket), which had occupancies, inclusive of leases signed not yet commenced, of 74% and 57% respectively, at September 30, 2013 as compared to occupancies of 70% and 50%, respectively at December 31, 2012. The third Sealy investment is located in Nashville, Tennessee and was 84% occupied at September 30, 2013 and December 31, 2012.

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The loan collateralized by the Newmarket property continues to be in special servicing. To date, we, together with our venture partner, have been unsuccessful in negotiating a restructuring of the debt with the special servicer. It is unlikely that a restructuring of this loan will be successful. At September 30, 2013, we carry this investment at zero.

On October 7, 2013 the loan collateralized by the Nashville, Tennessee property was foreclosed. We did not recognize any gain or loss on the foreclosure.

Marc Realty – As of September 30, 2013 we held equity interests in four properties with Marc Realty which consist of an aggregate of approximately 665,000 rentable square feet of office and retail space which was 79% occupied at September 30, 2013 as compared to 78% occupied at December 31, 2012.

REIT Securities

During the nine months ended September 30, 2013, we sold REIT securities with an original acquisition cost of $9,558,000 for net proceeds of $12,345,000.

As of September 30, 2013 our portfolio of REIT securities had a fair value of $7,074,000 compared to an original acquisition cost of $6,318,000.

Liquidity and Capital Resources

At September 30, 2013 we held $165,762,000 in unrestricted cash and cash equivalents. In addition, as of September 30, 2013 we had, subject to the value of the assets included in the borrowing base, $50,000,000 available to draw on our revolving line of credit and $7,074,000 in REIT securities.

We believe that cash flow from operations will continue to provide adequate capital to fund our operating and administrative expenses, as well as debt service obligations in the short term. As a REIT, we must distribute annually at least 90% of our REIT taxable income. As a result of this dividend requirement, we, like other REITs, are dependent on raising capital through equity and debt issuances or forming ventures with investors to obtain funds with which to expand our business. Accordingly, we anticipate that capital with which to make future investment and financing activities will be provided from return of capital received from proceeds from loan maturities and prepayment, borrowings, the issuance of additional equity and debt securities, as well as proceeds from sales of existing assets to the extent the taxable gain on such sales is able to be sheltered through the use of capital loss carry forwards. We have capital loss carry forwards of $31,697,000, $14,025,000 which expires in 2014 and $17,672,000 which expires in 2015.

In October 2013 we invested an additional $67,000,000 to complete our acquisition of four luxury apartment buildings. An additional $150,000,000 was provided by a first mortgage loan which is collateralized by the four properties.

Our primary sources of funds include:

• cash and cash equivalents;

• rents and reimbursements received from our operating properties;

• payments received under our loan assets;

• disposition of REIT securities;

• sale of existing assets;

• cash distributions from joint ventures;

• borrowings under our credit facilities;

• asset specific borrowings; and

• the issuance of equity and debt securities.

Public Offering

On September 30, 2013 we closed on a public offering of 2,750,000 Common Shares at a price of $11.45 per share. We received net proceeds of $30,250,000 after the underwriting discount but prior to offering expenses. Offering expenses are estimated to total $290,000.

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Contractual Obligations

Future Funding Requirements

We have future funding requirements relating to our 450 W 14^th Street property, our 701 Seventh Avenue investment and our 1515 Market Street loan which total approximately $88,913,000 at September 30, 2013. During October 2013 we made an additional contribution of $16,686,000 to our 701 Seventh Avenue investment reducing our overall future funding commitment to $72,227,000.

Debt Maturities

At September 30, 2013 we had consolidated mortgage loans payable of $308,049,000. We have no mortgage debt maturing in 2013, $18,949,000 maturing in 2014, and $8,619,000 maturing in 2015, with the remainder maturing in 2016 or later. On July 26, 2013 we used cash on hand to fully satisfy the $14,985,000 mortgage loan payable collateralized by our Amherst, New York property which was scheduled to mature in October 2013. We have a $14,000,000 secured financing which was scheduled to mature in October 2013. The financing is collateralized by our Hotel Wales loan receivable which was scheduled to mature in October 2013. This loan receivable and secured financing both had a one-year extension option which has been exercised extending the maturity date for both to October 2014. We have a $50,000,000 revolving line of credit which matures in March 2014 with an option to extend to March 2015 subject to our continued compliance with the line’s financial covenants. On September 30, 2013, we had no amounts outstanding on the line.

We continually evaluate our debt maturities and except as noted above on our Sealy equity investments, based on our current assessment, we believe there are viable financing and refinancing alternatives for debts as they mature that will not materially adversely impact our liquidity or our expected financial results.

Cash Flows

Our level of liquidity based upon cash and cash equivalents increased by approximately $68,080,000 from $97,682,000 at December 31, 2012 to $165,762,000 at September 30, 2013.

Our cash flow activities for the nine months ended September 30, 2013 and 2012 are summarized as follows (in thousands):

	For the Nine Months Ended September 30,
	2013		2012
Net cash flow provided by operating activities	$	25,835	$	37,712
Net cash flow provided by (used in) investing activities		32,634		(22,205	)
Net cash flow provided by financing activities		9,611		102,792
Increase in cash and cash equivalents	$	68,080	$	118,299

Operating Activities

For the nine months ended September 30, 2013 our operating activities generated consolidated net income of $31,429,000 and positive cash flow of $25,835,000. Our cash provided by operations reflects our net income adjusted by: (i) a reduction for non-cash items of $23,722,000 representing primarily earnings of equity investments, gains on sales of real estate investments, current period loan discount accretion and unrealized gains on securities carried at fair value offset by adding back depreciation and amortization expenses; (ii) $19,477,000 of distributions from non-consolidated interests; and (iii) a net decrease due to changes in other operating assets and liabilities of $1,349,000. See our discussion of “Results of Operations” below for additional details on our operations.

Investing Activities

Cash flow provided by investing activities for the nine months ended September 30, 2013 was approximately $32,634,000 as compared to cash flow used in investing activities of approximately $22,205,000 for the comparable period in 2012. This change of approximately $54,839,000 resulted primarily from increased proceeds from the sale of assets in 2013 and fewer investments made in 2013.

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Net cash provided by investing activities of $32,634,000 for the nine months ended September 30, 2013 was comprised primarily of the following:

• $47,597,000 in collection of loans receivable;

• $19,774,000 in proceeds from the sale of our Deer Valley, Arizona office property;

• $19,318,000 in proceeds from the sale of two loans receivable;

• $12,345,000 in proceeds from the sale of securities carried at fair value;

• $11,538,000 in proceeds from the sale of our Andover, Massachusetts office property;

• $10,834,000 in return of capital distributions from our 10 Metrotech venture;

• $4,905,000 in proceeds from the sale of two net lease retail properties;

• $3,041,000 in return of capital distributions from our Concord joint ventures; and

• $774,000 in return of capital distributions from our RE CDO Management joint venture.

These sources of cash flow were offset primarily by:

• $30,000,000 for the secured financing transaction related to the purchase of Elad Canada Inc.’s 50% interest in WRT-Elad One South State Lender LP;

• $25,606,000 for the initial deposit and other expenses related to our acquisition of four Class A apartment buildings which were acquired on October 31, 2013;

• $20,569,000 for our Playa Vista mezzanine loan origination;

• $7,745,000 for investment in our 701 7^th WRT investors joint venture;

• $6,289,000 for investment in capital and tenant improvements at our operating properties;

• $3,935,000 for investment in our new Atrium Mall joint venture; and

• $868,000 of advances made on our 1515 Market Street loan receivable prior to our consolidating this property.

Financing Activities

Cash flow provided by financing activities for the nine months ended September 30, 2013 was approximately $9,611,000 as compared to approximately $102,792,000 for the comparable period in 2012. This change of approximately $93,181,000 resulted primarily from the issuance of Senior Notes Payable and Series D Preferred Shares in 2012 offset by proceeds from new mortgage loans payable and the issuance of Common Shares in 2013.

Net cash provided by financing activities of $9,611,000 for the nine months ended September 30, 2013 was comprised primarily of the following:

• $43,000,000 in proceeds from a new mortgage loan on our Philadelphia, Pennsylvania office property;

• $29,960,000 in proceeds from the issuance of Common Shares;

• $5,100,000 in proceeds from a new mortgage loan on our Churchill, Pennsylvania property; and

• $861,000 in contributions from non-controlling interests at our New York, New York property.

These sources of cash flow were offset primarily by:

• $23,770,000 for payments on our recourse secured financing;

• $20,295,000 for principal payments on our mortgage loans payable;

• $16,102,000 for dividend payments on our Common Shares;

• $5,574,000 for dividend payments on our Series D Preferred Shares;

• $2,786,000 placed in escrow to fund dividends on our Series D Preferred Shares payable October 1, 2013;

• $789,000 for deferred financing costs; and

• $150,000 for the acquisition of non-controlling interests on our Houston, Texas property.

44

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Common and Preferred Share Dividends

As a result of our emphasis on total return, while we seek to achieve a stable, predictable dividend for our shareholders, we do not select or manage our investments for short-term dividend growth, but rather towards achieving overall superior total return. While we intend to continue paying dividends each quarter, the amount of our dividend will depend on the actual cash flow, financial condition, capital requirements, utilization of available capital losses, distribution requirements for REITs under the Internal Revenue Code, and such other factors as our Board of Trustees deem relevant. Subject to the foregoing, we expect to continue distributing our current cash flow from operations after reserving normal and customary amounts to maintain adequate capital reserves. In addition, when deemed prudent or necessitated by applicable dividend requirements for REITs under the Internal Revenue Code, we may make one or more special dividends during any particular year. However, during a favorable investing environment, we expect that we will utilize our carry forward capital losses to shelter gains from the disposition of our assets so we may use the proceeds for investment. We expect to continue applying these standards with respect to our dividends on a quarterly basis which may cause the dividends to increase or decrease depending on these various factors.

For each of the three months ended March 31, 2013, June 30, 2013, and September 30, 2013 we paid a regular quarterly dividend of $0.1625 per Common Share and a regular quarterly dividend of $0.578125 per Series D Preferred Share.

Comparability of Financial Data from Period to Period

The comparability of financial data from period to period is affected by several items including (i) the timing of our property acquisitions and leasing activities; (ii) the purchases and sales of assets and investments; (iii) when material other-than-temporary impairment losses or loss reserves on assets in our portfolio are taken; (iv) fluctuations in the fair value of our securities and loan securities carried at fair value; and (v) the reclassification of assets.

Results of Operations

All per share amounts presented in this section are on a diluted basis. Net income attributable to Common Shares was $25,253,000 or $0.76 per Common Share for the nine months ended September 30, 2013 as compared with net income of $20,221,000 or $0.61 per Common Share for the nine months ended September 30, 2012. Funds From Operations (FFO) attributable to Common Shares was $37,527,000 or $1.13 per Common Share for the nine months ended September 30, 2013 as compared to FFO of $41,334,000 or $1.25 per Common Share for the nine months ended September 30, 2012.

Our results are discussed below by business segment:

• Operating Properties – our wholly and partially owned operating properties;

• Loan Assets – our loans receivable, loan securities carried at fair value, and equity investments in loan assets; and

• REIT Securities – our ownership of equity and debt securities in other real estate investment trusts.

Non-segment specific results, which includes interest on cash reserves, general and administrative expenses and other non-segment specific income and expense items, are reported under corporate income (expense).

45

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

The following table summarizes our assets by business segment (in thousands):

	September 30, 2013		December 31, 2012
Operating properties	$	630,666	$	562,822
Loan assets		154,265		239,534
REIT securities		7,074		19,694
Corporate
Cash and cash equivalents		165,762		97,682
Restricted cash		7,387		—
Accounts receivable and prepaids		574		336
Deferred financing costs		2,757		3,095
Total Assets	$	968,485	$	923,163

Operating property assets increased by $25,500,000 as a result of our deposit on our acquisition of four residential properties, which was pending at September 30, 2013 and by $67,142,000 due to the conversion of our 1515 Market Street property from a loan asset to an operating property as a result of our acquisition of a 49% equity interest, inclusive of the general partner interest, in the property and decreased by $26,307,000 as a result of four property sales in 2013.

The decrease in loan assets was due primarily to the conversion of our 1515 Market Street property to an operating property, the sale of our Disney B Note at par, the payoffs at par of three loans receivable, and the payoff of our Metrotech loan equity investment offset by the acquisition of our venture partner’s interest in the Sullivan Center mezzanine loan.

The decrease in REIT securities assets was primarily the result of the sale of securities and a decrease in the fair market value of our remaining shares of Cedar Realty Trust.

Comparison of Nine Months ended September 30, 2013 versus Nine Months ended September 30, 2012

The following table summarizes our results from continuing operations by reportable segment and corporate income (expense) for the nine months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Operating properties	$	11,536		$	1,033
Loan assets		27,261			26,945
REIT securities		75			8,199
Corporate expenses		(15,468	)		(10,487	)
Income from continuing operations	$	23,404		$	25,690

46

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Operating Properties

The following table summarizes our results from continuing operations for our operating properties segment for the nine months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Rents and reimbursements	$	45,026		$	35,022
Operating expenses		(14,697	)		(10,643	)
Real estate taxes		(4,184	)		(3,116	)
Equity in income (loss) of Marc Realty investments		(17	)		33
Equity in loss of Sealy Northwest Atlanta		(363	)		(273	)
Equity in loss of Sealy Newmarket		—			(2,171	)
Equity in income of 701 7th WRT Investors		2,375			—
Equity in income of WRT-Fenway Wateridge		709			—
Equity in income of Vintage		7,142			2,326
Equity in income of WRT-Elad		1,515			458
Equity in income of Mentor		45			18
Equity in loss of Atrium Mall		(31	)		—
Equity in income of F-II Co-invest		—			232
Operating properties operating income		37,520			21,886
Depreciation and amortization expense		(14,703	)		(11,623	)
Interest expense		(11,131	)		(9,230	)
Settlement expense		(150	)		—
Operating properties net income	$	11,536		$	1,033

Operating income from our operating properties, which we define for our consolidated operating properties as all items of income and expense directly derived from or incurred by this segment before depreciation, amortization, interest expense and other non-recurring non-operating items and including our share of income or loss from equity investments, increased by $15,634,000 compared to the prior year period.

47

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

The following table breaks out our operating results from same store properties (properties held throughout both the current and prior year reporting periods) and new store properties (in thousands):

Consolidated Operating Properties

	For the Nine Months Ended September 30,
	2013		2012
Rents and reimbursements
Same store properties	$	31,490	$	33,575
New store properties		13,536		1,447
		45,026		35,022
Operating expenses
Same store properties		8,797		10,089
New store properties		5,900		554
		14,697		10,643
Real estate taxes
Same store properties		2,513		2,951
New store properties		1,671		165
		4,184		3,116
Consolidated operating properties operating income
Same store properties		20,180		20,535
New store properties		5,965		728
	$	26,145	$	21,263

The decrease in operating income for our same store properties was primarily the result of a decrease in revenue of $2,085,000 which was partially offset by a decrease in operating expenses of $1,292,000 and real estate taxes of $438,000.

The decrease in same store revenue was the result of:

• the partial sale of our Churchill, Pennsylvania property which occurred May 14, 2012;

• an amendment to the lease terms for Spectra Energy at 5400 Westheimer located in Houston, Texas. The modified lease reduced the average annual contractual obligation but extended the term of the lease through April 30, 2026; and

• a decrease in average occupancy at our Chicago, Illinois property known as River City from 67% to 49% primarily due to the loss of a significant tenant.

Which were partially offset by:

• increased average occupancy at our property known as Crossroads I located in Englewood, Colorado from 57% to 75%;

• increased average occupancy at our property known as Crossroads II located in Englewood, Colorado from 81% to 86%;

• increased average occupancy at our property known as 550/650 Corporetum located in Lisle, Illinois from 72% to 80%; and

• increased average occupancy at our property known as 450 W. 14^th Street located in New York, New York from 82% to 83%.

New store revenues for the nine months ended September 30, 2013 were as follows:

• $6,939,000 from our office property in Philadelphia, Pennsylvania which is consolidated as of February 1, 2013;

• $2,580,000 from our residential property in Memphis, Tennessee which was acquired April 17, 2012;

• $2,261,000 from our office property in Cerritos, California which was acquired October 4, 2012; and

• $1,756,000 from our residential property in Greensboro, North Carolina which was acquired November 2, 2012.

48

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Operating expenses increased by $4,054,000 due to expenses at our new store properties of $5,900,000. Same store operating expenses decreased by $1,292,000 due primarily to a decrease of $1,215,000 at our Churchill, Pennsylvania property as a result of the partial sale of the property and the new net lease with Westinghouse.

Real estate tax expense increased by $1,068,000. Real estate tax of $1,671,000 at our new store properties was offset by a decrease of $438,000 at our same store properties. The reduction at our same store properties was a result of the following:

• a decrease of $173,000 at our Crossroads I property due primarily to a prior year tax abatement approved and received in 2013;

• a decrease of $158,000 at our Crossroads II property due primarily to a prior year tax abatement approved and received in 2013; and

• a decrease of $96,000 at our Churchill, Pennsylvania property as a result of the partial sale of the property in 2012.

Depreciation and amortization expense increased by $3,080,000 in 2013 primarily as a result of our new store properties. Interest expenses related to our operating properties increased by $1,901,000 primarily as a result of financing at our new store properties in Memphis, Tennessee; Greensboro, North Carolina and Cerritos, California which were all acquired in 2012, and at our new store property in Philadelphia, Pennsylvania which was acquired in 2013.

Non-Consolidated Operating Properties: Equity Investments

Net operating income from equity investments was $11,375,000 for the nine months ended September 30, 2013 compared to net income of $623,000 for the nine months ended September 30, 2012. The increase was due primarily to:

• operating income from our Vintage portfolio increased by $4,816,000 primarily as a result of a decrease in amortization of lease intangibles;

• operating income from our 701 Seventh WRT Investors investment, which closed October 16, 2012, was $2,375,000;

• operating loss from our Sealy Newmarket investment decreased by $2,171,000 primarily as a result of having previously recognized losses in 2012 which brought our investment balance to zero at December 31, 2012 which triggered the suspension of recognition of additional losses during 2013;

• operating income from our WRT Fenway-Wateridge investment, which closed December 21, 2012, was $709,000; and

• operating income from our WRT-Elad investments increased by $1,057,000 primarily as a result of a reduction in the allocated losses from the property.

49

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Loan Assets

The following table summarizes our results from our loan assets segment for the nine months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Interest	$	10,912		$	8,130
Discount accretion		2,283			5,984
Equity in earnings of Concord Debt Holdings		3,041			386
Equity in earnings of CDH CDO		415			670
Equity in earnings of Concord Debt Holdings (1)		49			30
Equity in earnings of CDH CDO (1)		4,274			1,333
Equity in earnings of WRT-Stamford		701			548
Equity in earnings of SoCal Office Portfolio Loan		(2	)		9,710
Equity in earnings of 10 Metrotech		3,284			31
Equity in earnings of RE CDO Management		3,710			46
Equity in earnings of ROIC-Riverside LLC		—			706
Equity in earnings (loss) of ROIC-Lakeside Eagle LLC		(22	)		(32	)
Unrealized gain on loan securities carried at fair value		215			447
Loan assets operating income		28,860			27,989
General and administrative expense		(37	)		(40	)
Interest expense		(1,562	)		(1,004	)
Loan assets net income	$	27,261		$	26,945

(1) Represents the interest acquired from Lexington Realty Trust on May 1, 2012.

Operating income from loan assets, which we define as all items of income and expense directly derived from or incurred by this segment before general and administrative and interest expense, increased by $871,000 as compared to the prior year period. The increase was due primarily to:

• a $5,360,000 increase in net earnings from our Concord equity investments resulting from the payoffs of two of the underlying loan assets during the third quarter of 2013;

• a $3,664,000 increase in net earnings from our RE CDO Management equity investment which resulted from the sale of subordinated interests in collateralized debt obligation entities held by this venture;

• a $3,253,000 increase in net earnings from our 10 Metrotech equity investment as a result of the underlying loan asset being paid off at par in July 2013; and

• a $2,782,000 increase in interest income as a result of our 2012 origination and acquisition activity, primarily our Queensridge Tower loan which generated $2,018,000 of interest income during the nine months ended September 30, 2013.

Partially offset by:

• a $9,712,000 decrease in earnings from our SoCal Office Portfolio Loan investment as a result of the payoff of the underlying loan asset at par in September 2012; and

• a $3,701,000 decrease in discount accretion due primarily to the payoff at par in May 2012 of our 160 Spear and Magazine loans which had been acquired at a discount.

50

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

REIT Securities

The following table summarizes our results from our REIT securities segment for the nine months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Interest and dividends	$	350		$	904
Gain (loss) on sale of securities carried at fair value		(133	)		41
Unrealized gain (loss) on securities carried at fair value		(142	)		7,254
REIT securities operating income	$	75		$	8,199

Operating income from REIT securities, which we define as all items of income and expense directly derived from or incurred by this segment before interest expense, decreased by $8,124,000 as compared to the prior year period. The decrease was primarily due to a decrease in unrealized gain on securities carried at fair value primarily as a result of fluctuations of our holdings in, and the market price of, shares of Cedar Realty Trust.

Corporate

The following table summarizes our results from our non-segment specific income and expense items for the nine months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Interest income	$	286		$	433
General and administrative		(3,021	)		(2,407	)
Related party fees		(6,866	)		(6,641	)
Transaction costs		(158	)		(335	)
Interest expense		(5,482	)		(1,326	)
State and local taxes		(227	)		(211	)
Operating loss	$	(15,468	)	$	(10,487	)

The decrease in corporate operations for the comparable periods was due primarily to $4,178,000 increase in interest expense on our 7.75% Senior Notes (“Senior Notes”) issued in August 2012, an increase in the base management fee of $225,000 as a result of an increase in the outstanding equity on which the fee is calculated and $557,000 in compensation expense associated with the issuance of Restricted Shares in 2013 which is reflected in general and administrative expense.

State income taxes were $227,000 and $211,000 for the nine months ended September 30, 2013 and 2012, respectively, due primarily to our anticipated taxable income for state purposes, after deductions for dividends paid and after the utilization of net operating loss carryforwards, where applicable.

Discontinued operations

During 2012 the Trust’s retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana were sold and the operating results for these properties are included in discontinued operations for the nine months ended September 30, 2012.

During 2013 the Trust’s net lease retail properties in Denton, Texas and Seabrook, Texas and its office properties located in Deer Valley, Arizona and Andover, Massachusetts were sold and are included in discontinued operations at September 30, 2013. Operating results for all four properties are included in income from discontinued operations for the nine months ended September 30, 2013 and 2012.

51

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Income from discontinued operations for the nine months ended September 30, 2013 was $8,025,000 as compared to income of $594,000 for the nine months ended September 30, 2012. The increase was primarily due to a net gain of $10,948,000 recognized on the sales of the Deer Valley, Arizona, Andover, Massachusetts and Seabrook, Texas properties in 2013 partially offset by a $2,750,000 impairment charge recognized on our Lisle, Illinois property in 2013. The Lisle property was classified as held for sale at September 30, 2013.

Comparison of Three Months ended September 30, 2013 versus Three Months ended September 30, 2012

The following table summarizes our results from continuing operations by reportable segment and corporate income (expense) for the three months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Operating properties	$	4,460		$	1,098
Loan assets		12,976			15,328
REIT securities		69			3,425
Corporate expenses		(5,338	)		(3,889	)
Income from continuing operations	$	12,167		$	15,962

Operating Properties

The following table summarizes our results from continuing operations for our operating properties segment for the three months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Rents and reimbursements	$	15,099		$	12,224
Operating expenses		(5,272	)		(3,335	)
Real estate taxes		(1,705	)		(1,160	)
Equity in income (loss) of Marc Realty investments		(26	)		377
Equity in loss of Sealy Northwest Atlanta		(130	)		(109	)
Equity in loss of Sealy Newmarket		—			(704	)
Equity in income of 701 7th WRT Investors		1,055			—
Equity in income of WRT-Fenway Wateridge		239			—
Equity in income of Vintage		2,525			1,392
Equity in income (loss) of WRT-Elad		905			(57	)
Equity in income of Mentor		12			12
Equity in loss of Atrium Mall		(31	)		—
Operating properties operating income		12,671			8,640
Depreciation and amortization expense		(4,923	)		(4,416	)
Interest expense		(3,272	)		(3,126	)
Settlement expense		(16	)		—
Operating properties net income	$	4,460		$	1,098

Operating income from our operating properties, which we define for our consolidated operating properties as all items of income and expense directly derived from or incurred by this segment before depreciation, amortization, interest expense and other non-recurring non-operating items and including our share of income or loss from equity investments increased by $4,031,000 compared to the prior year period.

52

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

The following table breaks out our operating results from same store properties (properties held throughout both the current and prior year reporting periods) and new store properties (in thousands):

Consolidated Operating Properties

	For the Three Months Ended September 30,
	2013		2012
Rents and reimbursements
Same store properties	$	11,355	$	12,224
New store properties		3,744		—
		15,099		12,224
Operating expenses
Same store properties		3,410		3,335
New store properties		1,862		—
		5,272		3,335
Real estate taxes
Same store properties		1,150		1,160
New store properties		555		—
		1,705		1,160
Consolidated operating properties operating income
Same store properties		6,795		7,729
New store properties		1,327		—
	$	8,122	$	7,729

The decrease in operating income for our same store properties was primarily the result of a decrease in revenue of $869,000.

The decrease in same store revenue was the result of:

• an amendment to the lease terms for Spectra Energy at 5400 Westheimer located in Houston, Texas. The modified lease reduced the average annual contractual obligation but extended the term of the lease through April 30, 2026; and

• a decrease in average occupancy at our Chicago, Illinois property known as River City from 57% to 49% primarily due to the loss of a significant tenant.

Which were partially offset by:

• increased average occupancy at our property known as Crossroads I located in Englewood, Colorado from 57% to 90%; and

• increased average occupancy at our Chicago, Illinois property known as Ontario from 91% to 97%.

New store revenues for the three months ended September 30, 2013 were as follows:

• $2,447,000 from our office property in Philadelphia, Pennsylvania which is consolidated as of February 1, 2013;

• $700,000 from our office property in Cerritos, California which was acquired October 4, 2012; and

• $597,000 from our residential property in Greensboro, North Carolina which was acquired November 2, 2012.

Operating expenses increased by $1,937,000 due primarily to expenses at our new store properties of $1,862,000. Same store operating expenses increased by $75,000.

Real estate tax expense increased by $545,000 due primarily to real estate tax expense at our new store properties of $555,000.

53

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Depreciation and amortization expense increased by $507,000 in 2013 primarily as a result of our new store properties. Interest expenses related to our operating properties increased by $146,000 primarily as a result of financing at our new store properties in Greensboro, North Carolina and Cerritos, California which were both acquired in 2012 and at our new store property in Philadelphia, Pennsylvania which was acquired in 2013. Interest expense at our new store properties was partially offset by the capitalization of $600,000 of interest in connection with our 701 Seventh Avenue equity investment.

Non-Consolidated Operating Properties: Equity Investments

Net operating income from equity investments was $4,549,000 for the three months ended September 30, 2013 compared to net income of $911,000 for the three months ended September 30, 2012. The increase was due primarily to:

• operating income from our Vintage portfolio increased by $1,133,000 primarily as a result of a decrease in amortization of lease intangibles;

• operating income from our 701 Seventh WRT Investors investment, which closed October 16, 2012 was $1,055,000;

• operating loss from our Sealy Newmarket investment decreased by $704,000 primarily as a result of having previously recognized losses during 2012 which brought our investment balance to zero at December 31, 2012 which triggered the suspension of recognition of additional losses during 2013;

• operating income from our WRT-Elad investments increased by $962,000; and

• operating income from our WRT-Fenway Wateridge investment, which closed December 21, 2012, was $239,000.

Loan Assets

The following table summarizes our results from our loan assets segment for the three months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Interest	$	3,011		$	2,985
Discount accretion		806			425
Equity in earnings of Concord Debt Holdings		2,970			35
Equity in earnings of CDH CDO		265			136
Equity in earnings of Concord Debt Holdings (1)		20			2
Equity in earnings of CDH CDO (1)		3,367			855
Equity in earnings of WRT-Stamford		256			232
Equity in earnings of SoCal Office Portfolio Loan		—			10,348
Equity in earnings of 10 Metrotech		2,676			50
Equity in earnings (loss) of RE CDO Management		(51	)		18
Equity in earnings of ROIC-Riverside LLC		—			238
Equity in loss of ROIC-Lakeside Eagle LLC		(7	)		(16	)
Unrealized gain (loss) on loan securities carried at fair value		—			371
Loan asset operating income		13,313			15,679
General and administrative expense		(2	)		(15	)
Interest expense		(335	)		(336	)
Loan assets net income	$	12,976		$	15,328

(1) Represents the interest acquired from Lexington Realty Trust on May 1, 2012.

Operating income from loan assets, which we define as all items of income and expense directly derived from or incurred by this segment before general and administrative and interest expense, decreased by $2,366,000 as compared to the prior year period. The decrease was due primarily to:

• a $10,348,000 decrease in earnings from our SoCal Office Portfolio loan which was fully repaid in 2012.

54

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

Partially offset by:

• a $5,594,000 increase in earnings from our Concord equity investments as a result of the payoff of two of the underlying loans; and

• a $2,626,000 increase in earnings from our 10 Metrotech Loan LLC equity investment as a result of the payoff of the underlying loan asset.

REIT Securities

The following table summarizes our results from our REIT securities segment for the three months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Interest and dividends	$	100		$	312
Loss on sale of securities carried at fair value		(31	)		—
Unrealized gain on securities carried at fair value		—			3,113
REIT securities operating income	$	69		$	3,425

Operating income from REIT securities, which we define as all items of income and expense directly derived from or incurred by this segment before interest expense, decreased by $3,356,000 as compared to the prior year period. The decrease was primarily due to a decrease in unrealized gain on securities carried at fair value primarily as a result of the fluctuations of our holdings in, and the market price of, shares of Cedar Realty Trust shares.

Corporate

The following table summarizes our results from our non-segment specific income and expense items for the three months ended September 30, 2013 and 2012 (in thousands):

	2013			2012
Interest income	$	101		$	242
General and administrative		(1,111	)		(767	)
Related party fees		(2,309	)		(2,316	)
Transaction costs		(106	)		(30	)
Interest expense		(1,828	)		(954	)
State and local taxes		(85	)		(64	)
Operating loss	$	(5,338	)	$	(3,889	)

The increase in operating loss for the comparable periods was due primarily to an $836,000 increase in interest expense on our Senior Notes issued in August 2012 and $345,000 in compensation expense associated with the issuance of Restricted Shares in 2013 which is reflected in general and administrative expense.

State income taxes were $85,000 and $64,000 for the three months ended September 30, 2013 and 2012, respectively, due primarily to our anticipated taxable income for state purposes, after deductions for dividends paid and after the utilization of net operating loss carryforwards, where applicable.

Discontinued Operations

During 2012 the Trust’s retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana were sold and the operating results for these properties are included in discontinued operations for the three months ended September 30, 2012.

55

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

During 2013 the Trust’s net lease retail properties in Denton, Texas and Seabrook, Texas and its office properties located in Deer Valley, Arizona and Andover, Massachusetts were sold and are included in discontinued operations at September 30, 2013. Operating results for all four properties are included in income from discontinued operations for the three months ended September 30, 2013 and 2012. Also included in discontinued operations for all periods presented are the operations of our office property in Lisle, Illinois which is currently under contract to be sold and is classified as held for sale at September 30, 2013.

Loss from discontinued operations for the three months ended September 30, 2013 was $1,434,000 as compared to income of $85,000 for the three months ended September 30, 2012. The change was primarily due to a $2,750,000 impairment change on our Lisle, Illinois property in 2013 which was partially offset by a gain of $1,428,000 recognized on the sale of our Seabrook, Texas property in 2013.

Funds From Operations

We have adopted the revised definition of Funds from Operations (“FFO”), adopted by the Board of Governors of the National Association of Real Estate Investment Trusts (“NAREIT”). Management considers FFO to be an appropriate measure of performance of a REIT. We calculate FFO by adjusting net income (loss) (computed in accordance with GAAP, including non-recurring items), for gains (or losses) from sales of properties, real estate related depreciation and amortization, and adjustment for unconsolidated partnerships and ventures and impairments. Management believes that in order to facilitate a clear understanding of our historical operating results, FFO should be considered in conjunction with net income as presented in the consolidated interim financial statements included elsewhere herein. Management considers FFO to be a useful measure for reviewing our comparative operating and financial performance because, by excluding gains and losses related to sales of previously depreciated operating real estate assets and excluding real estate asset depreciation and amortization (which can vary among owners of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO can help one compare the operating performance of a company’s real estate between periods or as compared to different companies.

Our calculation of FFO may not be directly comparable to FFO reported by other REITs or similar real estate companies that have not adopted the term in accordance with the current NAREIT definition or that interpret the current NAREIT definition differently. FFO is not a GAAP financial measure and should not be considered as an alternative to net income (loss), the most directly comparable financial measure of our performance calculated and presented in accordance with GAAP, as an indication of our performance. FFO does not represent cash generated from operating activities determined in accordance with GAAP and is not a measure of liquidity or an indicator of our ability to pay dividends. We believe that to further understand our performance, FFO should be compared with our reported net income and considered in addition to cash flows in accordance with GAAP, as presented in our consolidated interim financial statements.

Based on the October 31, 2011 and January 6, 2012 updated guidance on reporting FFO, we have excluded impairment losses on depreciable real estate as well as other-than-temporary impairment on real estate equity method joint ventures in the calculations of FFO and have restated prior period calculations to be consistent with this presentation. The other-than-temporary impairments have been excluded as they relate to decreases in the fair value of depreciable real estate held by the investee.

56

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

The following presents a reconciliation of net income to funds from operations for the three and nine months ended September 30, 2013 and 2012 (in thousands, except per share amounts):

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2013			2012			2013			2012
Basic
Net income attributable to Winthrop Realty Trust	$	11,728		$	15,108		$	33,848		$	26,719
Real estate depreciation		3,153			2,903			9,665			8,165
Amortization of capitalized leasing costs		1,791			2,169			5,626			5,106
Trust’s share of real estate depreciation and amortization of unconsolidated interests		2,762			2,976			7,471			10,630
Impairment loss on investments in real estate		2,750			698			2,904			698
Gain on sale of real estate		(1,421	)		(945	)		(10,948	)		(945	)
(Gain) loss on sale of equity investments		—			(165	)		110			(271	)
Trust’s share of loss on sale of real estate of unconsolidated interests		722			—			722			—
Less: Non-controlling interest share of depreciation and amortization		(1,504	)		(699	)		(3,242	)		(2,144	)
Funds from operations attributable to the Trust		19,981			22,045			46,156			47,958
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Amount allocated to restricted shares		(129	)		—			(269	)		—
FFO applicable to Common Shares - Basic	$	17,065		$	19,259		$	37,527		$	41,460
Weighted-average Common Shares		33,076			33,075			33,047			33,064
FFO Per Common Share - Basic	$	0.52		$	0.58		$	1.14		$	1.25
Diluted
Funds from operations attributable to the Trust	$	19,981		$	22,045		$	46,156		$	47,958
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Amount allocated to restricted shares		(129	)		—			(269	)
FFO applicable to Common Shares	$	17,065		$	19,259		$	37,527		$	41,460
Weighted-average Common Shares		33,076			33,075			33,047			33,064
Stock options		2			1			2			—
Restricted shares		70			—			40			—
Diluted weighted-average Common Shares		33,148			33,076			33,089			33,064
FFO Per Common Share - Diluted	$	0.51		$	0.58		$	1.13		$	1.25

Critical Accounting Policies and Estimates

A summary of our critical accounting policies is included in our Annual Report on Form 10-K for the year ended December 31, 2012.

Recently Issued Accounting Standards

See Item 1 – Note 2.

57

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

We have exposure to fluctuations in market interest rates. Market interest rates are highly sensitive to many factors beyond our control. Various financial vehicles exist which would allow management to partially mitigate the potential negative effects of interest rate fluctuations on our cash flow and earnings.

Our liabilities include both fixed and variable rate debt. We seek to limit our risk to interest rate fluctuations through match financing on our loan assets as well as through hedging transactions.

The table below presents information about the Trust’s derivative financial instruments at September 30, 2013 (in thousands):

Type	Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge
Cap	October 2014		1.00	%	$	5,753	$	174	$	—
Cap	May 2014		1.75	%		51,982		434		—
Cap	August 2014		0.50	%		13,197		22		1
Swap	May 2016		0.50	%		42,922		—		(15	)

The fair value of our mortgage loans payable and secured financings, based on discounted cash flows at the current rate at which similar loans would be made to borrowers with similar credit ratings for the remaining term of such debt was less than its carrying value by $11,155,000 and $9,320,000 at September 30, 2013 and December 31, 2012, respectively. The fair value of our Senior Notes, based on quoted market prices, was greater than its carrying value by $3,416,000 and $2,933,000 at September 30, 2013 and December 31, 2012, respectively.

The following table shows what the annual effect a change in the LIBOR rate would have on interest expense based upon the balances in variable rate debt at September 30, 2013 (in thousands):

	Change in LIBOR (2)
	-0.18%			1%		2%		3%
Change in consolidated interest expense	$	(10	)	$	140	$	437	$	462
Pro-rata share of change in interest expense of debt on non-consolidated entities (1)		(21	)		101		68		102
(Increase) decrease in net income	$	(31	)	$	241	$	505	$	564

(1) Represents our pro-rata share of a change in interest expense in our Marc Realty, Sealy and 701 Seventh equity investments.

(2) The one-month LIBOR rate at September 30, 2013 was 0.17885%.

58

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

The Trust’s equity investment in Vintage, which is reported on a 30 day lag, holds floating rate debt of approximately $170,820,000 and bears interest at a rate indexed to the Securities Industry and Financial Markets Association Municipal Swap Index (SIFMA). The following table shows what the annual effect a change in the SIFMA rate would have on property level interest expense based upon the balances in variable rate debt at August 31, 2013 (in thousands):

	Change in SIFMA (1)
	-0.06%			1%		2%		3%
Pro-rata share of change in interest expense on Vintage debt	$	(55	)	$	919	$	1,837	$	2,756
(Increase) decrease in net income	$	(55	)	$	919	$	1,837	$	2,756

(1) The one-month SIFMA rate at August 31, 2013 was 0.06%.

We may utilize various financial instruments to mitigate the potential negative impact of interest rate fluctuations on our cash flows and earnings, including hedging strategies, depending on our analysis of the interest rate environment and the costs and risks of such strategies.

The following table shows what the annual effect a change in the LIBOR rate would have on interest income based upon our variable rate loan assets at September 30, 2013 (in thousands):

	Change in LIBOR (1)
	-0.18%			1%		2%		3%
Change in consolidated interest income	$	(3	)	$	73	$	178	$	343
Pro-rata share of change in interest income of loan assets in non-consolidated entities		(18	)		100		200		300
Increase (decrease) in net income	$	(21	)	$	173	$	378	$	643

(1) The one-month LIBOR rate at September 30, 2013 was 0.17885%.

Market Value Risk

Our hedge transactions using derivative instruments also involve certain additional risks such as counterparty credit risk, the enforceability of hedging contracts and the risk that unanticipated and significant changes in interest rates will cause a significant loss of basis in the contract. We believe that there is a low likelihood that these counterparties will fail to meet their obligations. There can be no assurance that we will adequately protect against the foregoing risks.

59

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

ITEM 4. CONTROLS AND PROCEDURES

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports filed with the SEC is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer (CEO) and Chief Financial Officer (CFO), as appropriate, to allow timely decisions regarding required disclosure.

As of September 30, 2013 an evaluation was performed under the supervision and with the participation of our management, including the CEO and CFO, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) under the Securities Exchange Act of 1934). Based on that evaluation, our management, including the CEO and CFO, concluded that our disclosure controls and procedures were effective as of September 30, 2013.

Other Matters

There have been no changes in our internal controls over financial reporting during the most recent quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

60

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

PART II. OTHER INFORMATION

ITEM 6. EXHIBITS

Exhibits required by Item 601 of Regulation S-K are filed herewith or incorporated herein by reference and are listed in the attached Exhibit Index.

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WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Trust has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	Winthrop Realty Trust
Date: November 8, 2013	By:	/s/ Michael L. Ashner
		Michael L. Ashner
		Chief Executive Officer
Date: November 8, 2013	By:	/s/ John A. Garilli
		John A. Garilli
		Chief Financial Officer
		(Principal Financial Officer and Principal Accounting Officer)

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WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

EXHIBIT INDEX

Exhibit	Description	Page Number
3.1	Second Amended and Restated Declaration of Trust as of May 21, 2009 - Incorporated by reference to Exhibit 3.1 to the Trust’s Quarterly Report on Form 10-Q for the period ended June 30, 2009.	-
3.2	By-laws of Winthrop Realty Trust as amended and restated on November 3, 2009 - Incorporated by reference to Exhibit 3.1 to the Trust’s Current Report on Form 8-K filed November 6, 2009.	-
3.3	Amendment to By-laws - Incorporated by reference to Exhibit 3.1 to the Trust’s Current Report on Form 8-K filed March 6, 2010.	-
4.1	Form of certificate for Common Shares of Beneficial Interest. Incorporated by reference to Exhibit 4.1 to the Trust’s Annual Report on Form 10-K for the year ended December 31, 2008.	-
4.2	Agreement of Limited Partnership of WRT Realty L.P., dated as of January 1, 2005 - Incorporated by reference to Exhibit 4.1 to the Trust’s Form 8-K filed January 4, 2005.	-
4.3	Amendment No. 1 to Agreement of Limited Partnership of WRT Realty, L.P., dated as of December 1, 2005 incorporated by reference to Exhibit 4.4 to the Trust’s Form 10-K filed March 15, 2012.	-
4.4	Amendment No. 2 to Agreement of Limited Partnership of WRT Realty, L.P., dated as of November 28, 2011 – Incorporated by reference to the Trust’s Form 8-K filed November 28, 2011.	-
4.5	Amendment No. 3 to Agreement of Limited Partnership of WRT Realty, L.P., dated as of March 23, 2012 – Incorporated by reference to the Trust’s Form 8-K filed March 23, 2012
4.6	Amended and restated Certificate of Designations of 9.25% Series D Cumulative Redeemable Preferred Shares of Beneficial Interest - Incorporated by reference to the Trust’s Form 8-K filed March 23, 2012.	-
4.7	Form of Specimen Certificate for the 9.25% Series D Cumulative Redeemable Preferred Shares of Beneficial Interest - Incorporated by reference to Exhibit 4.2 to Trust’s Form 8-A filed with the Securities and Exchange Commission on November 23, 2011.	-
4.8	Indenture, dated August 6, 2012 between the Trust and The Bank of New York Mellon, as trustee – Incorporated by reference to the Exhibit 4.1 to the Trust’s Form 8-K filed August 9, 2012.	-
4.9	First Supplemental Indenture, dated August 15, 2012, between the Trust and the Bank of New York Mellon, as trustee and collateral agent – Incorporated by reference to Exhibit 4.1 of the Trust’s Form 8-K filed August 15, 2012.	-
10.1	Stock Purchase Agreement between the Trust and FUR Investors, LLC, dated as of November 26, 2003, including Annex A thereto, being the list of Conditions to the Offer - Incorporated by reference to Exhibit 10.1 to the Trust’s Form 8-K filed December 1, 2003.	-

63

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

10.2	Second Amended and Restated Advisory Agreement dated March 5, 2009, between the Trust, WRT Realty L.P. and FUR Advisors LLC. Incorporated by reference to Exhibit 10.3 to the Trust’s Annual Report on Form 10-K for the year ended December 31, 2008.	-
10.3	Amendment No. 1 to Second Amended and Restated Advisory Agreement - Incorporated by reference to Exhibit 10.30 to the Trust’s Quarterly Report on Form 10-Q for the period ended March 31, 2009.	-
10.4	Amendment No. 2 to Second Amended and Restated Advisory Agreement - Incorporated by reference to Exhibit 10.1 to the Trust’s Form 8-K filed January 29, 2010.	-
10.5	Amendment No. 3 to Second Amended and Restated Advisory Agreement - Incorporated by reference to Exhibit 10.1 to the Trust’s Form 8-K filed March 2, 2012.	-
10.6	Exclusivity Services Agreement between the Trust and Michael L. Ashner - Incorporated by reference to Exhibit 10.4 to the Trust’s Form 8-K filed December 1, 2003.	-
10.7	Amendment No. 1 to Exclusivity Agreement, dated November 7, 2005 - Incorporated by reference to Exhibit 10.7 to the Trust’s Form 8-K filed November 10, 2005.	-
10.8	Covenant Agreement between the Trust and FUR Investors, LLC - Incorporated by reference to Exhibit 10.5 to the Trust’s Form 8-K filed December 1, 2003.	-
10.9	Amended and Restated Omnibus Agreement, dated March 16, 2005, among Gerald Nudo, Laurence Weiner and WRT Realty L.P. - Incorporated by reference to Exhibit 10.1 to the Trust’s Form 8-K filed March 18, 2005.	-
10.10	Agreement, dated as of July 1, 2009, among Gerald Nudo, Laurence Weiner and WRT Realty L.P. Incorporated by reference to Exhibit 10.14 to the Trust’s Form 10-Q for the period ended June 30, 2009 filed August 10, 2009.	-
10.11	Winthrop Realty Trust 2007 Long Term Stock Incentive Plan - Incorporated by reference to the Trust’s Definitive Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on March 30, 2007.	-
10.12	Amended and Restated Loan Agreement, dated as of March 3, 2011, between WRT Realty L.P. and KeyBank, National Association. – Incorporated by reference to Exhibit 10.19 to the Trust’s 10-K filed March 16, 2011.	-
10.13	Guaranty from Winthrop Realty Trust and certain of its Subsidiaries in favor of KeyBank, National Association. – Incorporated by reference to Exhibit 10.20 to the Trust’s 10-K filed March 16, 2011.	-
31	Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	(1)
32	Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	(1)
101.INS	XBRL Report Instance Document	(1)
101.SCH	XBRL Taxonomy Extension Schema Document	(1)
101.CAL	XBRL Taxonomy Calculation Linkbase Document	(1)
101.LAB	XBRL Taxonomy Label Linkbase Document	(1)
101.PRE	XBRL Presentation Label Linkbase Document	(1)
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document	(1)

64

WINTHROP REALTY TRUST

FORM 10-Q SEPTEMBER 30, 2013

(1) filed herewith

65

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Michael L. Ashner, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Winthrop Realty Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any changes in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter, that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date: November 8, 2013	/s/ Michael L. Ashner
	Michael L. Ashner
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, John A. Garilli, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Winthrop Realty Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as of, and for, the periods presented in this report;

4. The Registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the Registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any changes in the Registrant’s internal control over financial reporting that occurred during the Registrant’s most recent fiscal quarter, that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting; and

5. The Registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Registrant’s auditors and the audit committee of the Registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant’s internal control over financial reporting.

Date: November 8, 2013	/s/ John A. Garilli
	John A. Garilli
	Chief Financial Officer
	(Principal Financial Officer and Principal Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Winthrop Realty Trust (“the Company”) for the period ended September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michael L. Ashner, Chief Executive Officer, certify, pursuant to 18 U.S.C. section 1350, as adopted, pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Michael L. Ashner
Name:	Michael L. Ashner
	Chief Executive Officer
November 8, 2013

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of Winthrop Realty Trust (“the Company”) for the period ended September 30, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, John A. Garilli, Chief Financial Officer, certify, pursuant to 18 U.S.C. section 1350, as adopted, pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ John A. Garilli
Name:	John A. Garilli
	Chief Financial Officer
	(Principal Financial Officer and Principal Accounting Officer)

November 8, 2013

XML

Variable Interest Entities - The Allocation of the Aggregate Purchase Price (Detail) (USD $)	Sep. 30, 2013	Jun. 01, 2012	Jan. 31, 2013 1515 Market Street [Member]	Jan. 31, 2013 Lease Intangibles [Member] 1515 Market Street [Member]	Sep. 30, 2013 Above Market Lease Intangibles [Member]	Jan. 31, 2013 Above Market Lease Intangibles [Member] 1515 Market Street [Member]	Sep. 30, 2013 Below Market Lease [Member]	Jan. 31, 2013 Below Market Lease [Member] 1515 Market Street [Member]
Finite-Lived Intangible Assets [Line Items]
Land			$ 18,627,000
Building			23,159,000
Other improvements			73,000
Tenant improvements			1,407,000
Above market lease intangibles	17,810,000			14,943,000	2,867,000	2,867,000	(620,000)	(620,000)
Net working capital acquired			1,132,000
Other liabilities			(1,299,000)
Long term liabilities assumed			(60,279,000)
Net assets acquired		$ 363,000	$ 10,000

XML

Non-controlling Interests - Schedule of Changes in Trust's Ownership Interest in Subsidiaries (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Trusts Ownership Interest In Subsidiaries [Abstract]
Net income attributable to Winthrop Realty Trust	$ 11,728	$ 15,108	$ 33,848	$ 26,719
Increase (decrease) in Winthrop Realty Trust's paid in capital related to purchases of non-controlling interests			103	(5,695)
Changes from net income attributable to Winthrop Realty Trust and transfers (to) from non-controlling interests	$ 11,728	$ 15,108	$ 33,951	$ 21,024

XML

Commitments and Contingencies - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Property, Plant and Equipment [Line Items]
Expire date of ground lease	Jun. 01, 2053
CBS [Member]
Property, Plant and Equipment [Line Items]
Percentage of net proceeds	50.00%
Payable amount of sale of property	$ 150,000
Additional contingent fee	340,000
Minimum [Member] | CBS [Member]
Property, Plant and Equipment [Line Items]
Amount in excess of net of closing cost	6,500,000
Ground Lease [Member]
Property, Plant and Equipment [Line Items]
Future funding commitments	88,913,000
Ground Lease Commitments, 2013	337,000
Ground Lease Commitments, 2014	1,405,000
Ground Lease Commitments, 2015	1,463,000
Ground Lease Commitments, 2016	1,592,000
Ground Lease Commitments, 2017	1,656,000
Ground Lease Commitments, Thereafter	$ 109,419,000

XML

Derivative Financial Instruments

9 Months Ended

Sep. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

11. Derivative Financial Instruments

The Trust has exposure to fluctuations in market interest rates. The Trust seeks to limit its risk to interest rate fluctuations through match financing on its assets as well as through hedging transactions.

The Trust’s objective in using interest rate derivatives is to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Trust primarily uses interest rate caps and interest rate swaps as part of its interest rate risk management strategy relating to certain of its variable rate debt instruments.

The effective portion of changes in fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change, if any, in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2013 interest rate caps and swaps were used to hedge the variable cash flows associated with existing variable-rate debt. The Trust also assesses, both at its inception and on an ongoing basis, whether the hedging instrument is highly effective in achieving offsetting changes in the cash flows attributable to the hedged item. The Trust has recorded changes in fair value related to the effective portion of its interest rate hedges designated and qualifying as cash flow hedges as comprehensive loss totaling $150,000 and $20,000 for the three and nine months ended September 30, 2013, and $16,000 and $73,000 for the three and nine months ended September 30, 2012, respectively.

The table below presents information about the Trust’s interest rate caps and interest rate swaps that are included on the consolidated balance sheet that were designated as cash flow hedges of interest rate risk at September 30, 2013 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge in Other Comprehensive Income			Unrealized (Loss) Gain on Hedge in Other Comprehensive Income			Change in Hedge Valuations Included in Other Comprehensive Income for the Three Months Ended September 30, 2013			Change in Hedge Valuations Included in Other Comprehensive Income for the Nine Months Ended September 30, 2013
Aug 2014		0.50	%	$	13,197	$	22	$	1		$	—		$	(3	)	$	(4	)
May 2016		0.50	%	$	42,922	$	—	$	(15	)	$	(15	)	$	(147	)	$	(15	)

The table below presents information about the Trust’s interest rate caps that were not designated as cash flow hedges at September 30, 2013 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value		Change in Cap Valuations Included in Interest Expense for the Three Months Ended September 30, 2013		Change in Cap Valuations Included in Interest Expense for the Nine Months Ended September 30, 2013
May 2013		1.25	%	$	—	$	196	$	—	$	—	$	—
May 2014		1.75	%		51,982		434		—		—		—
Oct 2014		1.00	%		5,753		174		—		1		1

The table below presents information about the Trust’s interest rate caps and interest rate swaps that are included on the consolidated balance sheet that were designated as cash flow hedges of interest rate risk at September 30, 2012 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge in Other Comprehensive Income			Unrealized Gain on Hedge in Other Comprehensive Income		Change in Hedge Valuations Included in Other Comprehensive Income for the Three Months Ended September 30, 2012			Change in Hedge Valuations Included in Other Comprehensive Income for the Nine Months Ended September 30, 2012
Aug 2014		0.50	%	$	13,478	$	22	$	—		$	—	$	—		$	—
Oct 2014		1.00	%	$	21,000	$	174	$	(165	)	$	—	$	(17	)	$	(77	)

The table below presents information about the Trust’s interest rate caps that were not designated as cash flow hedges at September 30, 2012 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value		Change in Cap Valuations Included in Interest Expense for the Three Months Ended September 30, 2012		Change in Cap Valuations Included in Interest Expense for the Nine Months Ended September 30, 2012
May 2013		1.25	%	$	51,982	$	196	$	—	$	—	$	18
May 2014		1.75	%		51,982		434		1		5		46

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Receivables - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended				3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Elad Canada Inc [Member]	Sep. 30, 2013 WRT-Elad One South State Lender LP [Member]	Aug. 21, 2013 WRT-Elad One South State Lender LP [Member]	Sep. 30, 2013 WRT-Elad One South State Lender LP [Member] Elad Canada Inc [Member]	Sep. 30, 2013 WRT-Elad One South State Equity LP [Member]	Sep. 30, 2013 WRT-Elad One South State Equity LP [Member]	Sep. 30, 2013 WRT-Elad One South State Equity LP [Member] Elad Canada Inc [Member]	Sep. 30, 2013 Recourse Secured Financings [Member]	Dec. 31, 2012 Recourse Secured Financings [Member]
Receivables [Line Items]
Loans receivable accrued interest	$ 563,000		$ 563,000		$ 1,016,000
Cumulative accretion of loans receivable	4,773,000		4,773,000		2,527,000
Loans receivable, exclusive of interest receivable	7,620,000		7,620,000		9,865,000
Weighted average coupon rate on loans receivable			6.90%		7.65%
Weighted average yield to maturity			11.88%		11.43%
Non recourse secured financings	29,150,000		29,150,000		29,150,000
Secured financings	29,150,000		29,150,000		52,920,000								23,770,000	23,770,000
Non performing loans	0		0		0
Past due payments	0		0		0
Provision for loan loss	0		0
Nominal % Ownership							50.00%	50.00%	50.00%			50.00%
Secured financing receivable	30,395,000		30,395,000				30,000,000
Interest income	$ 101,000	$ 242,000	$ 286,000	$ 433,000						$ 395,000	$ 395,000
Period for the return of Asset						2 years
Annual Interest rate						15.00%

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Consolidated Statements of Operations and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue
Rents and reimbursements	$ 15,099	$ 12,224	$ 45,026	$ 35,022
Interest, dividends and discount accretion	3,917	3,722	13,545	15,018
Total Revenue	19,016	15,946	58,571	50,040
Expenses
Property operating	5,272	3,335	14,697	10,643
Real estate taxes	1,705	1,160	4,184	3,116
Depreciation and amortization	4,923	4,416	14,703	11,623
Interest	5,435	4,416	18,175	11,560
General and administrative	1,113	782	3,058	2,447
Related party fees	2,309	2,316	6,866	6,641
Transaction costs	106	30	158	335
State and local taxes	85	64	227	211
Total expenses	20,948	16,519	62,068	46,576
Other income (loss)
Equity in income of equity investments	13,856	12,809	26,249	14,051
Earnings from preferred equity investments	189		576
Realized gain (loss) on sale of securities carried at fair value	(31)		(133)	41
Unrealized gain (loss) on securities carried at fair value		3,113	(142)	7,254
Unrealized gain on loan securities carried at fair value		371	215	447
Settlement expense	(16)		(150)
Interest income	101	242	286	433
Total other income (loss)	14,099	16,535	26,901	22,226
Income from continuing operations	12,167	15,962	23,404	25,690
Discontinued operations
(Loss) income from discontinued operations	(1,434)	85	8,025	594
Net income	10,733	16,047	31,429	26,284
Net loss (income) attributable to non-controlling interest	995	(939)	2,419	435
Net income attributable to Winthrop Realty Trust	11,728	15,108	33,848	26,719
Preferred dividend on Series D Preferred Shares	(2,787)	(2,786)	(8,360)	(6,498)
Amount allocated to Restricted Common Shares	(106)		(235)
Net income attributable to Common Shares	8,835	12,322	25,253	20,221
Per Common Share data - Basic
Income from continuing operations	$ 0.31	$ 0.37	$ 0.52	$ 0.59
Income (loss) from discontinued operations	$ (0.04)		$ 0.24	$ 0.02
Net income attributable to Winthrop Realty Trust	$ 0.27	$ 0.37	$ 0.76	$ 0.61
Per Common Share data - Diluted
Income from continuing operations	$ 0.31	$ 0.37	$ 0.52	$ 0.59
Income (loss) from discontinued operations	$ (0.04)		$ 0.24	$ 0.02
Net income attributable to Winthrop Realty Trust	$ 0.27	$ 0.37	$ 0.76	$ 0.61
Basic Weighted-Average Common Shares	33,076	33,075	33,047	33,064
Diluted Weighted-Average Common Shares	33,148	33,076	33,089	33,064
Comprehensive income
Net income	10,733	16,047	31,429	26,284
Change in unrealized loss on interest rate derivative	(150)	(16)	(20)	(73)
Consolidated comprehensive income	10,583	16,031	31,409	26,211
Net loss (income) attributable to non-controlling interest	995	(939)	2,419	435
Other comprehensive income attributable to non-controlling interest
Comprehensive loss (income) attributable to non-controlling interest	995	(939)	2,419	435
Comprehensive income attributable to Winthrop Realty Trust	$ 11,578	$ 15,092	$ 33,828	$ 26,646
Dividend declared per Common Share	$ 0.1625	$ 0.1625	$ 0.4875	$ 0.4875

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Fair Value Measurements

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements

3. Fair Value Measurements

REIT securities, loan securities and derivative financial instruments are reported at fair value. The accounting standards establish a framework for measuring fair value as well as disclosures about fair value measurements. They emphasize that fair value is a market based measurement, not an entity-specific measurement. Therefore a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, the standards establish a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

The Trust’s Level 3 loan securities carried at fair value primarily consist of non-agency mortgage-related securities. The Trust values the loan securities carried at fair value it holds based primarily on prices received from a pricing service. The techniques used by the pricing service to develop the prices generally are either: (a) a comparison to transactions involving instruments with similar collateral and risk profiles; or (b) industry standard modeling, such as a discounted cash flow model. The significant inputs and assumptions used to determine the fair value of the Trust’s loan securities include prepayment rates, probability of default, loss severity and yield to maturity percentages.

Recurring Measurements

The table below presents the Trust’s assets measured at fair value on a recurring basis as of September 30, 2013 according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Assets and Liabilities
Securities carried at fair value	$	7,074	$	—		$	—	$	7,074
Loan securities carried at fair value		—		—			226		226
Interest rate hedges		—		(14	)		—		(14	)
	$	7,074	$	(14	)	$	226	$	7,286

The table below presents the Trust’s assets measured at fair value on a recurring basis as of December 31, 2012, according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Securities carried at fair value	$	19,694	$	—	$	—	$	19,694
Loan securities carried at fair value		—		—		11		11
Interest rate hedges		—		8		—		8
	$	19,694	$	8	$	11	$	19,713

There were no inter-level transfers of assets or liabilities during the nine months ended September 30, 2013 and September 30, 2012.

The table below includes a roll forward of the balance sheet amounts from January 1, 2013 to September 30, 2013 and from January 1, 2012 to September 30, 2012 including the change in fair value, for financial instruments classified by the Trust within Level 3 of the valuation hierarchy (in thousands). When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement.

Loan Securities Carried at Fair Value	Nine Months Ended September 30, 2013		Nine Months Ended September 30, 2012
Fair value, January 1	$	11	$	5,309
Net unrealized gain		215		447
Fair value, September 30	$	226	$	5,756
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at September 30, 2013 and 2012, respectively	$	215	$	447

Quantitative Information about Level 3 Fair Value Measurements

At September 30, 2013 the Trust held only one loan security which is valued at $226,000, or 20% of face value. The valuation reflects assumptions that would be considered by market participants along with management’s assessment of collectible future cash flows.

Non-Recurring Measurements

Non-recurring measurements of fair value of assets or liabilities would typically include investments in real estate, assets held for sale and equity investments. During the three months ended September 30, 2013 the Trust recognized an impairment charge of $2,750,000 on its Lisle, Illinois property which is included in assets held for sale at September 30, 2013. During the nine months ended September 30, 2013 the Trust recognized impairment charges totaling $2,904,000 on its Lisle, Illinois and Denton, Texas properties. The Trust recognized an impairment charge of $698,000 on its Memphis, Tennessee property for the three and nine months ended September 30, 2012.

During the quarter ended June 30, 2013 the Trust entered into a purchase and sale agreement on its Denton, Texas property. At June 30, 2013 the purchase deposit was non-refundable and it was probable that the sale would be consummated. As a result the property was classified as held for sale at June 30, 2013. A fair value measurement was prepared based on the purchase contract and a $154,000 impairment charge was recorded at June 30, 2013. The property was sold on July 2, 2013.

In light of continued leasing challenges and specific sub-market dynamics, at September 30, 2013 the Trust re-evaluated its business plan and revised its holding period for its operating property in Lisle, Illinois referred to as 701 Arboretum. As a result, it was determined that due to the shorter holding period, the carrying value of the 701 Arboretum property was no longer fully recoverable. The property was classified as held for sale at September 30, 2013. The Trust has entered into a purchase and sale agreement on this property and, if consummated, the sale is expected to close in the fourth quarter of 2013. A fair value measurement was prepared based on the purchase contract with a third-party market participant, less costs to sell, and a $2,750,000 impairment charge was recorded at September 30, 2013.

The Trust’s net lease retail property in Memphis, Tennessee was placed into discontinued operations during the period ended September 30, 2012. The carrying value of the property exceeded the fair value less costs to sell resulting in a $698,000 impairment charge which was recorded at September 30, 2012.

The Table below presents the Trust’s assets measured at fair value on a non-recurring basis as of September 30, 2013, according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Non-Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Assets held for sale	$	—	$	—	$	2,421	$	2,421
	$	—	$	—	$	2,421	$	2,421

Financial Instruments Not Reported at Fair Value

The carrying value and estimated fair value of financial instruments not recorded at fair value on a recurring basis but required to be disclosed at fair value were as follows (in thousands):

	September 30, 2013
					Fair value hierarchy level
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Loans receivable	$	108,163	$	122,876	$	—	$	—	$	122,876
Secured financing receivable		30,395		30,395		—		—		30,395
Mortgage loans payable		308,049		296,678		—		—		296,678
Senior notes payable		86,250		89,666		89,666		—		—
Secured financings		29,150		29,366		—		—		29,366
Notes payable		1,664		1,664		—		—		1,664

	December 31, 2012
					Fair value hierarchy level
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Loans receivable	$	211,250	$	222,246	$	—	$	—	$	222,246
Mortgage loans payable		280,576		270,923		—		—		270,923
Senior notes payable		86,250		89,183		89,183		—		—
Secured financings		52,920		53,253		—		—		53,253
Notes payable		1,676		1,676		—		—		1,676

Loans Receivable, Secured Financing Receivable, Mortgage Loans Payable, Secured Financings and Notes Payable

Fair values of loans receivable, secured financing receivable, mortgage loans payable, secured financings and notes payable are primarily determined by discounting the expected cash flows at current interest rates plus an applicable risk spread, which reflects credit quality and maturity of the loans. The risk spread is based on loans with comparable credit quality, maturities and risk profile. Loans receivable may also be based on the fair value of the underlying real estate collateral less cost to sell, which is estimated using appraised values. These are classified as Level 3.

Fair Value Option

The current accounting guidance for fair value measurement provides a fair value option election that allows companies to irrevocably elect fair value as the measurement attribute for certain financial assets and liabilities. Changes in fair value for assets and liabilities for which the election is made are recognized in earnings on a quarterly basis based on the then market price regardless of whether such assets or liabilities have been disposed of at such time. The fair value option guidance permits the fair value option election to be made on an instrument by instrument basis when it is initially recorded or upon an event that gives rise to a new basis of accounting for that asset or liability. The Trust elected the fair value option for all loan securities and REIT securities acquired.

There was no change in the fair value of loan securities or in the per share value of the REIT securities for the three months ended September 30, 2013. During the three months ended September 30, 2012, the Trust recognized net unrealized gains of $3,484,000. For the nine months ended September 30, 2013 and 2012, the Trust recognized net unrealized gains of $73,000 and $7,701,000, respectively. The change in fair value of the REIT securities and loan securities for which the fair value option was elected is recorded as an unrealized gain or loss in the Trust’s Consolidated Statements of Operations. Income related to securities carried at fair value is recorded as interest and dividend income.

The following table presents as of September 30, 2013 and December 31, 2012 the Trust’s financial assets for which the fair value option was elected (in thousands):

Financial Instruments at Fair Value	September 30, 2013		December 31, 2012
Assets
Securities carried at fair value:
REIT common shares	$	7,074	$	19,694
Loan securities carried at fair value		226		11
	$	7,300	$	19,705

The table below presents as of September 30, 2013 the difference between fair values and the aggregate contractual amounts due for which the fair value option has been elected (in thousands):

	Fair Value at September 30, 2013		Amount Due Upon Maturity		Difference
Assets
Loan securities carried at fair value	$	226	$	1,130	$	904

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Variable Interest Entities

9 Months Ended

Sep. 30, 2013

Text Block [Abstract]

Variable Interest Entities

18. Variable Interest Entities

Consolidated Variable Interest Entities

Consolidated variable interest entities are those where the Trust is the primary beneficiary of a variable interest entity. The primary beneficiary is the party that has a controlling financial interest in the VIE, which is defined by the entity having both of the following characteristics: 1) the power to direct the activities that, when taken together, most significantly impact the VIE’s performance, and 2) the obligation to absorb losses and right to receive the returns from the VIE that could be significant to the VIE. The Trust has identified two consolidated variable interest entities.

Although the Trust holds 100% of the equity interests in the Cerritos office property, the B-Note collateralized by the property enables the senior lender to participate in the entity’s expected residual returns, the Trust will need to fund expected losses and infuse additional capital to lease and stabilize property operations. Through its equity interests in the property, the Trust has both the right to the returns of the entity and power to direct the activities of Cerritos. Accordingly, the Trust is the primary beneficiary and has consolidated Cerritos since its acquisition on October 5, 2012.

At September 30, 2013 the carrying value of the Cerritos assets and liabilities included: land and building of $22,079,000 net of accumulated depreciation of $830,000; lease intangibles of $3,435,000 net of accumulated amortization of $627,000; mortgage debt comprised of an A Note totaling $23,153,000 and participating B Note totaling $864,000. The outstanding mortgage debt collateralized by the property is non-recourse to the Trust.

In connection with the loan modification of 1515 Market Street, the Trust acquired a 49% equity interest in the entity that holds the property. This equity interest includes the general partner interest. The Trust determined that the 1515 Market Street entity was a variable interest entity due to the lender’s right to participate in the entity’s expected residual returns. Through its equity interest, the Trust has both the right to the returns of the entity and power to direct the activities of 1515 Market Street. Accordingly, the Trust is the primary beneficiary and has consolidated the property effective February 1, 2013.

At September 30, 2013 the carrying value of the 1515 Market Street assets and liabilities include land and building of $42,950,000 net of accumulated depreciation of $590,000 and lease intangibles of $16,624,000 net of accumulated amortization of $1,566,000 and a first mortgage note of $42,683,000. A second mortgage note of $35,040,000 is eliminated in consolidation. The outstanding mortgage debt collateralized by the property is non-recourse to the Trust.

The fair value of the assets and liabilities of the consolidated property was calculated by an independent third party valuation firm and reviewed by management. The following table summarizes the allocation of the aggregate purchase price of 1515 Market Street as of February 1, 2013 (in thousands):

	1515 Market Street
Land	$	18,627
Building		23,159
Other improvements		73
Tenant improvements		1,407
Lease intangibles		14,943
Above market lease intangibles		2,867
Net working capital acquired		1,132
Below market lease intangibles		(620	)
Other liabilities		(1,299	)
Long term liabilities assumed		(60,279	) (1)
Net assets acquired	$	10

(1) Long term liabilities assumed as part of this transaction remain legally outstanding but are eliminated in consolidation with the Trust’s loan asset purchased on December 12, 2012.

Intangible assets acquired and intangible liabilities assumed for 1515 Market Street at February 1, 2013 consisted of the following (in thousands):

	Carrying Value			Weighted Average Amortization Period (years)
Intangible assets:
In place lease intangibles	$	6,542			6.2
Above market lease intangibles		2,867			5.8
Tenant relationship value		7,388			13.3
Lease commissions, legal and marketing fees		1,013			5.4
Total	$	17,810			9.0
Intangible liabilities:
Below market lease intangibles	$	(620	)		4.2

For the three and nine months ended September 30, 2013, 1515 Market Street contributed revenue of approximately $2,449,000 and $6,942,000, respectively, and contributed net income of approximately $514,000 and $1,586,000, respectively.

The accompanying unaudited pro forma information for the three and nine months ended September 30, 2013 and 2012 is presented as if the consolidation of 1515 Market Street on February 1, 2013 had occurred on January 1, 2012. This unaudited pro forma information is based upon historical consolidated financial information and should be read in conjunction with the consolidated financial statements and notes thereto. This unaudited pro forma information does not purport to represent what the actual results of operations of the Trust would have been had the above occurred, nor do they purport to predict the results of operations of future periods.

Pro forma	For the Three Months Ended				For the Nine Months Ended
(In thousands, except for per share data)	September 30,				September 30,
	2013		2012		2013		2012
Total revenue	$	18,842	$	18,151	$	59,502	$	57,913
Consolidated net income	$	10,133	$	16,010	$	30,797	$	26,591
Net income attributable to Winthrop Realty Trust	$	11,128	$	15,660	$	33,489	$	28,207
Per common share data - basic		0.25		0.39		0.76		0.66
Per common share data - diluted		0.25		0.39		0.76		0.66

Variable Interest Entities Not Consolidated

Equity Method and Preferred Equity Investments – The Trust has reviewed its various equity method and preferred equity investments and identified 11 investments for which the Trust holds a variable interest in a VIE. Of these 11 interests there are seven investments for which the underlying entities do not have sufficient equity at risk to permit them to finance their activities without additional subordinated financial support. There are four additional entities for which the VIE assessment was primarily based on the fact that the voting rights of the equity holders are not proportional to their obligations to absorb expected losses and rights to receive residual returns of the legal entities. These 11 unconsolidated joint ventures are those where the Trust is not the primary beneficiary of a VIE.

Loans Receivable and Loan Securities – The Trust has reviewed its loans receivable and loan securities and four of these assets have been identified as variable interests in a VIE because the equity investment at risk at the borrowing entity level is not considered sufficient for the entity to finance its activities without additional subordinated financial support. There is one investment where the equity holders lack the right to receive returns due to the lender’s participation interest in the debt.

Certain loans receivable and loan securities which have been determined to be VIEs are performing assets, meeting their debt service requirements. In these cases the borrower holds legal title to the real estate collateral and has the power to direct the activities that most significantly impact the economic performance of the VIE, including management and leasing activities. In the event of default under these loans, the Trust only has protective rights and its obligation to absorb losses is limited to the extent of its loan investment. The borrower has been determined to be the primary beneficiary for these performing assets.

The Trust has determined that it does not currently have the power to direct the activities of the properties collateralizing any of its loans receivable and loan securities. For this reason, management believes that it does not control, nor is it the primary beneficiary of these properties. Accordingly, the Trust accounts for these investments under the guidance for loans receivable and real estate debt investments.

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Debt - Mortgage Loans Payable (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2013
Debt Instrument [Line Items]
LIBOR Rate	0.17885%
Three Percent Loan Due August Two Thousand and Fourteen [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on floor rate	0.50%
Debt instrument interest rate cap basis spread at LIBOR	0.50%
Two Point Six Nine Percent Loan Due October Two Thousand and Fourteen [Member]
Debt Instrument [Line Items]
Debt instrument interest rate cap basis spread at LIBOR	1.00%
Three Point Five Percent Due May Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on floor rate	1.00%
Debt instrument interest rate cap basis spread at LIBOR	1.75%
Two Point Five Percent Due May Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Mortgage loan, LIBOR rate	0.50%
Amherst, NY [Member] | Five Point Six Five Percent Loan Due October Two Thousand and Thirteen [Member]
Debt Instrument [Line Items]
Maturity date of loan	Jul. 26, 2013

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Receivables - Loans Receivable by Internal Credit Rating (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013 Number	Dec. 31, 2012 Number
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	14	18
Carrying Value of Loans Receivable	$ 108,163,000	$ 211,250,000
Greater than Zero [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	13	18
Carrying Value of Loans Receivable	97,840,000	211,250,000
Equal to Zero [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans	1
Carrying Value of Loans Receivable	10,323,000
Less than Zero [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Loans
Carrying Value of Loans Receivable

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Non-controlling Interests

9 Months Ended

Sep. 30, 2013

Noncontrolling Interest [Abstract]

Non-controlling Interests

12. Non-controlling Interests

Houston, Texas Operating Property – During the first quarter of 2013, a wholly-owned subsidiary of the Trust acquired a quarter-unit limited partner interest, representing 1% of 5400 Westheimer Holding LP (“Westheimer”), for a purchase price of $75,000. The Trust accounted for this purchase as an equity transaction recording the difference in the $127,000 carrying value of the acquired non-controlling interest and the purchase price as a $52,000 increase in paid-in capital. During the second quarter of 2013, the wholly-owned subsidiary acquired an additional 1% interest in Westheimer for a purchase price of $75,000. The Trust accounted for this purchase as an equity transaction recording the difference in the $126,000 carrying value of the acquired non-controlling interest and the purchase price as a $51,000 increase in paid-in capital. As a result, the Trust now owns 32% of Westheimer.

One East Erie/Ontario Operating Property – On June 1, 2012 the Trust purchased from Marc Realty its 20% non-controlling interest in FT-Ontario Holdings LLC for $5,850,000. The Trust accounted for this purchase as an equity transaction recording the difference in the $363,000 carrying value of the acquired non-controlling interest and the purchase price as a $5,487,000 reduction in paid-in capital.

Deer Valley Operating Property – On March 29, 2012 the Trust purchased the 3.5% non-controlling ownership interest of its consolidated joint venture, WRT-DV LLC, for $400,000. The Trust accounted for the purchase as an equity transaction recording the difference in the $192,000 carrying value of the acquired non-controlling interest and the purchase price as a $208,000 reduction in paid-in capital.

The changes in the Trust’s ownership interest in the subsidiaries impacted consolidated equity during the period are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Net income attributable to Winthrop Realty Trust	$	11,728	$	15,108	$	33,848	$	26,719
Increase (decrease) in Winthrop Realty Trust’s paid in capital related to purchases of non-controlling interests		—		—		103		(5,695	)
Changes from net income attributable to Winthrop Realty Trust and transfers (to) from non-controlling interests	$	11,728	$	15,108	$	33,951	$	21,024

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Variable Interest Entities - Intangible Assets Acquired and Intangible Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible assets carrying value	$ 17,810
Intangible assets acquired and intangible liabilities assumed, weighted average amortization period	9 years
In Place Lease Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets carrying value	6,542
Intangible assets acquired and intangible liabilities assumed, weighted average amortization period	6 years 2 months 12 days
Above Market Lease Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets carrying value	2,867
Intangible assets acquired and intangible liabilities assumed, weighted average amortization period	5 years 9 months 18 days
Tenant Relationship Value [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets carrying value	7,388
Intangible assets acquired and intangible liabilities assumed, weighted average amortization period	13 years 3 months 18 days
Lease Commissions, Legal and Marketing Fees [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets carrying value	1,013
Intangible assets acquired and intangible liabilities assumed, weighted average amortization period	5 years 4 months 24 days
Below Market Lease [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets carrying value	$ (620)
Intangible assets acquired and intangible liabilities assumed, weighted average amortization period	4 years 2 months 12 days

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Fair Value Measurements - Trust's Financial Assets for Which the Fair Value Option was Elected (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Financial instruments at fair value	$ 7,300	$ 19,705
Securities Carried at Fair Value [Member] | REIT Common Shares [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Financial instruments at fair value	7,074	19,694
Loan Securities Carried at Fair Value [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Financial instruments at fair value	$ 226	$ 11

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Related-Party Transactions - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
FUR Advisors [Member]
Related Party Transaction [Line Items]
Percentage of Equity contributions	1.50%
Percentage of Equity contributions by unaffiliated third parties	0.25%
Payable to related parties included in related party fees payable	$ 2,309,000
Winthrop Management [Member]
Related Party Transaction [Line Items]
Payable to related parties included in related party fees payable	$ 383,000

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Securities Carried at Fair Value - Securities Carried at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	$ 6,479	$ 16,037
Fair Value	7,300	19,705
Common Shares of Beneficial Interest [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	6,318	15,876
Fair Value	7,074	19,694
Loan Securities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Cost	161	161
Fair Value	$ 226	$ 11

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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2013

Text Block [Abstract]

The Allocation of the Aggregate Purchase Price

The fair value of the assets and liabilities of the consolidated property was calculated by an independent third party valuation firm and reviewed by management. The following table summarizes the allocation of the aggregate purchase price of 1515 Market Street as of February 1, 2013 (in thousands):

	1515 Market Street
Land	$	18,627
Building		23,159
Other improvements		73
Tenant improvements		1,407
Lease intangibles		14,943
Above market lease intangibles		2,867
Net working capital acquired		1,132
Below market lease intangibles		(620	)
Other liabilities		(1,299	)
Long term liabilities assumed		(60,279	) (1)
Net assets acquired	$	10

(1) Long term liabilities assumed as part of this transaction remain legally outstanding but are eliminated in consolidation with the Trust’s loan asset purchased on December 12, 2012.

Intangible Assets Acquired and Intangible Liabilities Assumed

Intangible assets acquired and intangible liabilities assumed for 1515 Market Street at February 1, 2013 consisted of the following (in thousands):

	Carrying Value			Weighted Average Amortization Period (years)
Intangible assets:
In place lease intangibles	$	6,542			6.2
Above market lease intangibles		2,867			5.8
Tenant relationship value		7,388			13.3
Lease commissions, legal and marketing fees		1,013			5.4
Total	$	17,810			9.0
Intangible liabilities:
Below market lease intangibles	$	(620	)		4.2

The Accompanying Unaudited Pro Forma Information

Pro forma	For the Three Months Ended				For the Nine Months Ended
(In thousands, except for per share data)	September 30,				September 30,
	2013		2012		2013		2012
Total revenue	$	18,842	$	18,151	$	59,502	$	57,913
Consolidated net income	$	10,133	$	16,010	$	30,797	$	26,591
Net income attributable to Winthrop Realty Trust	$	11,128	$	15,660	$	33,489	$	28,207
Per common share data - basic		0.25		0.39		0.76		0.66
Per common share data - diluted		0.25		0.39		0.76		0.66

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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Reconciliation of Earnings Attributable to Common Shares Outstanding for the Basic and Diluted EPS

The reconciliation of earnings attributable to Common Shares outstanding for the basic and diluted earnings per share calculation is as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Basic
Income from continuing operations	$	12,167		$	15,962		$	23,404		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		10,278			12,237			17,252			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(9	)		—			(24	)		—
Net income applicable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Basic	$	0.27		$	0.37		$	0.76		$	0.61
Diluted
Income from continuing operations	$	12,167		$	15,962		$	23,404		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		10,278			12,237			17,252			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(9	)		—			(24	)		—
Net income applicable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Stock options (1)		2			1			2			—
Restricted shares (2)		70			—			40			—
Diluted weighted-average Common Shares		33,148			33,076			33,089			33,064
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Diluted	$	0.27		$	0.37		$	0.76		$	0.61

(1) The Trust’s outstanding stock options were dilutive for the three and nine months ended September 30, 2013 and 2012. The weighted-average stock options for the nine months ended September 30, 2012 was less than one thousand shares.

(2) The Trust’s restricted stock was dilutive for the three and nine months ended September 30, 2013.

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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The accompanying unaudited consolidated interim financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial statements and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements, although management believes that the disclosures presented herein are adequate to make the accompanying unaudited consolidated interim financial statements not misleading. The accompanying unaudited consolidated interim financial statements should be read in conjunction with the audited consolidated annual financial statements and the notes thereto included in Winthrop’s Annual Report on Form 10-K for the year ended December 31, 2012 filed with the SEC. In the opinion of management, all adjustments considered necessary for fair statements have been included, and all such adjustments are of a normal recurring nature. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of the operating results for the full year.

The accompanying unaudited consolidated interim financial statements represent the consolidated results of Winthrop, its wholly-owned taxable REIT subsidiary, WRT-TRS Management Corp., the Operating Partnership and all majority-owned subsidiaries and affiliates over which the Trust has financial and operating control and variable interest entities (“VIE”s) in which the Trust has determined it is the primary beneficiary. All significant intercompany balances and transactions have been eliminated in consolidation. The Trust accounts for all other unconsolidated joint ventures using the equity method of accounting. Accordingly, the Trust’s share of the earnings of these joint ventures and companies is included in consolidated net income.

Out of Period Adjustment

Out of Period Adjustment

During the three months ended September 30, 2013, the Trust recorded an out of period adjustment in the amount of $224,000 to correct the capitalization of interest on an equity method investment in the Trust’s balance sheet and interest expense in the statement of operations. As a result, the Trust’s net income and income from continuing operations was understated by $224,000 for the period ended June 30, 2013 and overstated by the same amount for the three months ended September 30, 2013. Additionally, for the period ended June 30, 2013, the Trust’s cash provided by operating activities was understated by $224,000 and cash provided by investing activities was overstated by $224,000. The Trust concluded that this adjustment is not material to the current period or the prior period’s consolidated financial statements. As such, this cumulative charge was recorded in the statement of operations for the three months ended September 30, 2013, rather than restating prior periods.

Stock-Based Compensation

Stock-Based Compensation

Pursuant to the Trust’s 2007 Long Term Stock Incentive Plan the Trust may, from time to time, issue stock-based compensation awards to certain eligible persons including those performing services for FUR Advisors LLC (“FUR Advisors”), the Trust’s external advisor. During the first nine months of 2013, the Trust issued 600,000 restricted common shares of beneficial interest. See Note 16 for further discussion. The Trust accounts for this stock-based compensation in accordance with ASC 505-50, Equity-Based Payments to Non-Employees. Until the awards are no longer subject to forfeiture, the Trust measures stock-based compensation expense at each reporting date for any changes in fair value and recognizes the expense prorated for the portion of the requisite service period completed.

Reclassifications

Reclassifications

Certain prior year balances of accounts receivable have been reclassified to accrued rental income in order to conform to the current year presentation. Discontinued operations for all periods presented in the Consolidated Statements of Operations include the operations of the Trust’s retail properties in Seabrook, Texas and Denton, Texas which were disposed of in August 2013 and July 2013, respectively, and the Trust’s office properties in Deer Valley, Arizona and Andover, Massachusetts which were disposed of in June 2013 and March 2013, respectively, and the Trust’s retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana, both of which were disposed of in September 2012. Also included in discontinued operations for all periods presented are the operations of the Trust’s office property in Lisle, Illinois which is currently under contract to be sold and is classified as held for sale at September 30, 2013. It is expected that the sale will be consummated during the fourth quarter of 2013.

Earnings Per Share

Earnings Per Share

The Trust determines basic earnings per share on the weighted average number of common shares of beneficial interest (“Common Shares”) outstanding during the period and reflects the impact of participating securities. The Trust computes diluted earnings per share based on the weighted average number of Common Shares outstanding combined with the incremental weighted average effect from all outstanding potentially dilutive instruments.

The Trust has calculated earnings per share in accordance with relevant accounting guidance for participating securities and the two class method. The reconciliation of earnings attributable to Common Shares outstanding for the basic and diluted earnings per share calculation is as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Basic
Income from continuing operations	$	11,567		$	15,962		$	22,804		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		9,678			12,237			16,652			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(8	)		—			(23	)		—
Net income applicable to Common Shares	$	8,236		$	12,322		$	24,654		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Income from continuing operations	$	0.29		$	0.37		$	0.50		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Basic	$	0.25		$	0.37		$	0.74		$	0.61
Diluted
Income from continuing operations	$	11,567		$	15,962		$	22,804		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		9,678			12,237			16,652			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(8	)		—			(23	)		—
Net income applicable to Common Shares	$	8,236		$	12,322		$	24,654		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Stock options (1)		2			1			2			—
Restricted shares (2)		70			—			40			—
Diluted weighted-average Common Shares		33,148			33,076			33,089			33,064
Income from continuing operations	$	0.29		$	0.37		$	0.50		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Diluted	$	0.25		$	0.37		$	0.74		$	0.61

(1) The Trust’s outstanding stock options were dilutive for the three and nine months ended September 30, 2013 and 2012. The weighted-average stock options for the nine months ended September 30, 2012 was less than one thousand shares.

(2) The Trust’s restricted stock was dilutive for the three and nine months ended September 30, 2013.

For the quarter ended September 30, 2013, the Trust paid a regular quarterly dividend of $0.1625 per Common Share and a regular quarterly dividend of $0.578125 per share of its Series D Cumulative Redeemable Preferred Shares of Beneficial Interest (the “Series D Preferred Shares”).

Recently Issued Accounting Standards

Recently Issued Accounting Standards

On February 5, 2013, FASB issued ASU No. 2013-02: Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, to improve the transparency of reporting the reclassifications of significant amounts out of accumulated other comprehensive income. This guidance requires entities to present the effects on the line items of net income of significant reclassifications from accumulated other comprehensive income, either where net income is presented or in the notes, as well as cross-reference to other disclosures currently required under U.S. GAAP for other reclassification items (that are not required under U.S. GAAP) to be reclassified directly to net income in their entirety in the same reporting period. The new disclosure requirements will be effective for annual reporting periods beginning on or after January 1, 2013. The new disclosures will be required for both interim and annual reporting. The Trust has evaluated this new guidance and its adoption did not have a material impact on its consolidated financial statements.

On December 16, 2011, FASB issued ASU No. 2011-11: Balance Sheet (Topic 210)—Disclosures about Offsetting Assets and Liabilities, clarified by ASU No. 2013-1, which requires entities to disclose both gross information and net information about both instruments and transactions eligible for offset in the financial statements particularly for transactions related to derivatives, sale and repurchase agreements and reverse sale and repurchase agreements, and securities borrowing and securities lending arrangements. The new disclosure requirements will be effective for annual reporting periods beginning on or after January 1, 2013. The new disclosures will be required for all prior comparative periods presented. The Trust has evaluated this new guidance and its adoption did not have a material impact on its consolidated financial statements.

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Fair Value Measurements - Trust Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring	$ 2,421
Assets Held for Sale [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring	2,421
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Assets Held for Sale [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring
Significant Other Observable Inputs (Level 2) [Member] | Assets Held for Sale [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring	2,421
Significant Unobservable Inputs (Level 3) [Member] | Assets Held for Sale [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair value disclosure, nonrecurring	$ 2,421

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Non-controlling Interests (Tables)

9 Months Ended

Sep. 30, 2013

Noncontrolling Interest [Abstract]

Schedule of Changes in the Trust's Ownership Interest in the Subsidiaries

The changes in the Trust’s ownership interest in the subsidiaries impacted consolidated equity during the period are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Net income attributable to Winthrop Realty Trust	$	11,728	$	15,108	$	33,848	$	26,719
Increase (decrease) in Winthrop Realty Trust’s paid in capital related to purchases of non-controlling interests		—		—		103		(5,695	)
Changes from net income attributable to Winthrop Realty Trust and transfers (to) from non-controlling interests	$	11,728	$	15,108	$	33,951	$	21,024

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accounting Policies [Abstract]
Restricted common shares issued			600
Adjusted amount to correct capitalization interest	$ 224,000
Quarterly dividend paid per Common Share	$ 0.1625	$ 0.1625	$ 0.4875	$ 0.4875
Quarterly dividend paid per Series D Preferred Share	$ 0.578125		$ 1.7344	$ 1.15625

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Fair Value Measurements - Difference Between Fair Values and the Aggregate Contractual Amounts (Detail) (Loan Securities Carried at Fair Value [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Loan Securities Carried at Fair Value [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Fair Value at September 30, 2013	$ 226
Amount Due Upon Maturity	1,130
Difference	$ 904

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Equity Investments (Tables)

9 Months Ended

Sep. 30, 2013

Trust's Carrying Amounts in its Equity Investments

The Trust’s carrying amounts in its equity investments consist of the following at September 30, 2013 and December 31, 2012 (in thousands):

Venture Partner	Equity Investment	Nominal % Ownership at September 30, 2013			September 30, 2013		December 31, 2012
VHH LLC (1)	Vintage Housing Holding LLC		75.0	%	$	33,706	$	30,534
Elad Canada Inc.	WRT-Elad One South State Equity LP		50.0	%		—		460
Elad Canada Inc.	WRT-Elad One South State Lender LP		50.0	%		24,518		24,644
Mack-Cali	WRT-Stamford LLC		20.0	%		8,916		8,501
Atrium/Northstar	10 Metrotech Loan LLC		33.3	%		11		10,845
Atrium Holding	RE CDO Management LLC		50.0	%		993		1,779
Freed	Mentor Retail LLC		49.9	%		596		551
Inland	Concord Debt Holdings LLC		33.3	%		—		—
Inland	CDH CDO LLC		24.8	%		—		—
Inland (2)	Concord Debt Holdings LLC		33.3	%		982		3,974
Inland (2)	CDH CDO LLC		24.8	%		4,181		322
Sealy (1)	Northwest Atlanta Partners LP		60.0	%		7,741		8,104
Sealy (1)	Newmarket GP LLC		68.0	%		—		—
Sealy (1)	Airpark Nashville GP		50.0	%		—		—
Marc Realty (1)	Brooks Building LLC		50.0	%		8,076		7,983
Marc Realty (1)	High Point Plaza LLC		50.0	%		2,137		2,241
Marc Realty (1)	1701 Woodfield LLC		50.0	%		2,052		1,977
Marc Realty (1)	Enterprise Center LLC		50.0	%		2,440		2,679
Marc Realty (1)	Atrium Mall LLC		50.0	%		3,904		—
ROIC	WRT-ROIC Lakeside Eagle LLC		50.0	%		3		—
New Valley/Starwood	Socal Office Portfolio Loan LLC		73.0	%		—		8
New Valley/Witkoff	701 7th WRT Investors LLC		70.6	%		36,989		28,735
Fenway	WRT-Fenway Wateridge LLC		50.0	%		1,816		1,522
					$	139,061	$	134,859

(1) The Trust has determined that these equity investments are investments in VIEs. The Trust has determined that it is not the primary beneficiary of these VIEs since the Trust does not have the power to direct the activities that most significantly impact the economic performance of the VIEs.

(2) Represents the interests acquired from Lexington Realty Trust on May 1, 2012.

Activity of the Trust's Equity Investments

The following table reflects the activity of the Trust’s equity investments for the period ended September 30, 2013 (in thousands):

Investment	Balance at December 31, 2012		Contributions		Equity Income (loss)			Distributions			Sales Price			Balance at September 30, 2013
Vintage Housing Holding LLC (2)	$	30,534	$	—	$	7,142		$	(3,970	)	$	—		$	33,706
WRT-Elad One South State Equity LP (2)		460		1,013		(1,473	)		—			—			—
WRT-Elad One South State Lender LP (2)		24,644		—		2,988			(3,114	)		—			24,518
WRT-Stamford LLC		8,501		—		701			(286	)		—			8,916
10 Metrotech LLC		10,845		—		3,284			(14,118	)		—			11
RE CDO Management LLC		1,779		—		3,710			(4,496	)		—			993
Mentor Retail LLC		551		—		45			—			—			596
Concord Debt Holdings LLC		—		—		3,041			(3,041	)		—			—
CDH CDO LLC		—		—		415			(402	)		(13	)		—
701 7th WRT Investors LLC (3)		28,735		7,745		2,375			(1,866	)		—			36,989
WRT-Fenway Wateridge LLC (2)		1,522		161		133			—			—			1,816
CDH CDO LLC (1)		322		—		4,274			(402	)		(13	)		4,181
Sealy		8,104		—		(363	)		—			—			7,741
Marc Realty		14,880		—		(17	)		(158	)					14,705
Atrium Mall LLC		—		3,935		(31	)		—			—			3,904
WRT-ROIC Lakeside Eagle LLC		—		25		(22	)		—			—			3
SoCal Office Portfolio Loan LLC		8		—		(2	)		(6	)		—			—
Concord Debt Holdings LLC (1)		3,974		—		49			(3,041	)		—			982
Total	$	134,859	$	12,879	$	26,249		$	(34,900	)	$	(26	)	$	139,061

(1) Represents the interests acquired from Lexington Realty Trust on May 1, 2012.

(2) The Trust has elected to report its share of earnings from the investment on a one month lag period.

(3) The Trust has elected to report its share of earnings from the investment on a three month lag period.

Vintage Housing Holding LLC [Member]

Summarized Balance Sheets of Real Estate Investments

The summarized balance sheets of the Trust’s Vintage Housing Holding LLC venture is as follows (in thousands):

	September 30, 2013		December 31, 2012
ASSETS
Real estate, net	$	360,851	$	340,666
Cash and cash equivalents		5,469		6,555
Restricted cash held in escrows		45,380		41,878
Receivables and other assets		19,964		26,681
Total Assets	$	431,664	$	415,780
LIABILITIES AND MEMBERS’ CAPITAL
Mortgage and notes payable	$	313,078	$	298,654
Other liabilities		47,443		53,687
Non-controlling interests		18,006		15,997
Members’ Capital		53,137		47,442
Total Liabilities and Members’ Capital	$	431,664	$	415,780
Carrying value of the Trust’s investment in Vintage Housing Holding	$	33,706	$	30,534

Summarized Statements of Operations of Real Estate Equity Investments

The summarized statements of operations of the Trust’s Vintage Housing Holding LLC venture is as follows (in thousands):

	For the Three Months Ended September 30, 2013		For the Three Months Ended September 30, 2012		For the Nine Months Ended September 30, 2013		For the Nine Months Ended September 30, 2012
Total revenue	$	11,048	$	10,328	$	32,451	$	30,928
Expenses
Operating		4,649		4,254		13,952		12,250
Real estate taxes		128		139		397		442
Interest		485		1,503		1,480		4,824
Depreciation and amortization		446		978		1,137		6,605
Other expenses		1,453		1,323		4,176		4,048
Total expenses		7,161		8,197		21,142		28,169
Net income		3,887		2,131		11,309		2,759
Loss attributable to non-controlling interests		676		29		1,399		791
Net income attributable to VHH	$	4,563	$	2,160	$	12,708	$	3,550
Trust’s share of net income	$	2,525	$	1,392	$	7,142	$	2,326

CDH CDO LLC [Member]

Summarized Balance Sheets of Real Estate Investments

The summarized balance sheets of the Trust’s CDH CDO LLC venture are as follows (in thousands):

	September 30, 2013		December 31, 2012
ASSETS
Cash and cash equivalents	$	2,031	$	1,885
Real estate debt investments carried at fair value		183,110		185,060
Securities carried at fair value		80,463		95,994
Real estate, net		—		19,909
Interest and other receivables		1,066		1,030
Other assets		319		3,893
Total Assets	$	266,989	$	307,771
LIABILITIES AND MEMBERS’ CAPITAL
Collateralized debt obligation carried at fair value		153,361		191,345
Mortgage note payable		—		22,293
Interest rate swap liability		8,270		11,413
Other liabilities		2,727		5,423
Non-controlling interests		102		102
Members’ Capital		102,529		77,195
Total Liabilities and Members’ Capital	$	266,989	$	307,771
Carrying value of the Trust’s investments in CDH CDO LLC	$	4,181	$	322

Summarized Statements of Operations of Real Estate Equity Investments

The summarized statement of operations of the Trust’s CDH CDO LLC venture is as follows (in thousands):

	For the Three Months Ended September 30, 2013			For the Three Months Ended September 30, 2012			For the Nine Months Ended September 30, 2013			For the Nine Months Ended September 30, 2012
Interest, dividends and discount accretion	$	4,469		$	4,688		$	12,654		$	13,362
Expenses
Interest expense		1,598			1,651			4,791			5,012
Fees and expenses paid to related party		250			250			750			750
General and administrative		328			304			891			964
Total expenses		2,176			2,205			6,432			6,726
Net investment income:		2,293			2,483			6,222			6,636
Net property income		(55	)		(5	)		(205	)		(282	)
Loss on sale of real estate		(2,909	)		—			(2,909	)		—
Gain on extinguishment of debt		4,827			—			4,827			—
Realized gain (loss) from investments		13,367			1,716			13,361			(1,042	)
Unrealized gain (loss) from investments		391			620			5,886			7,436
Net income		17,914			4,814			27,182			12,748
Trust’s share of net income	$	3,367		$	855		$	4,274		$	1,333

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Equity Investments - Summarized Statements of Operations of Real Estate Equity Investments (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Interest, dividends and discount accretion	$ 3,917,000	$ 3,722,000	$ 13,545,000	$ 15,018,000
Expenses
Interest expense	5,435,000	4,416,000	18,175,000	11,560,000
Real estate taxes	1,705,000	1,160,000	4,184,000	3,116,000
General and administrative	1,113,000	782,000	3,058,000	2,447,000
Vintage Housing Holding LLC [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total revenue	11,048,000	10,328,000	32,451,000	30,928,000
Expenses
Operating	4,649,000	4,254,000	13,952,000	12,250,000
Real estate taxes	128,000	139,000	397,000	442,000
Interest	485,000	1,503,000	1,480,000	4,824,000
Depreciation and amortization	446,000	978,000	1,137,000	6,605,000
Other expenses	1,453,000	1,323,000	4,176,000	4,048,000
Total expenses	7,161,000	8,197,000	21,142,000	28,169,000
Net income (loss)	3,887,000	2,131,000	11,309,000	2,759,000
Loss attributable to non-controlling interests	676,000	29,000	1,399,000	791,000
Net income	4,563,000	2,160,000	12,708,000	3,550,000
Trust's share of net income	2,525,000	1,392,000	7,142,000	2,326,000
CDH CDO LLC [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Interest, dividends and discount accretion	4,469,000	4,688,000	12,654,000	13,362,000
Expenses
Interest expense	1,598,000	1,651,000	4,791,000	5,012,000
Fees and expenses paid to related party	250,000	250,000	750,000	750,000
General and administrative	328,000	304,000	891,000	964,000
Total expenses	2,176,000	2,205,000	6,432,000	6,726,000
Net investment income:	2,293,000	2,483,000	6,222,000	6,636,000
Net property income	(55,000)	(5,000)	(205,000)	(282,000)
Loss on sale of real estate	(2,909,000)		(2,909,000)
Gain on extinguishment of debt	4,827,000		4,827,000
Realized gain (loss) from investments	13,367,000	1,716,000	13,361,000	(1,042,000)
Unrealized gain (loss) from investments	391,000	620,000	5,886,000	7,436,000
Net income	17,914,000	4,814,000	27,182,000	12,748,000
Trust's share of net income	$ 3,367,000	$ 855,000	$ 4,274,000	$ 1,333,000

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Senior Notes Payable - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Aug. 31, 2012
Debt Disclosure [Abstract]
Senior notes payable	$ 86,250,000	$ 86,250,000	$ 86,250,000
Senior notes issued percentage			7.75%
Senior notes issue price			100.00%
Net proceeds	$ 83,228,000
Maturity period of the assumed debt	Aug. 15, 2022
Notes interest rate	7.75%
Redemption price of notes	100.00%

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Equity Investments - Summarized Balance Sheets of Real Estate Investments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 165,762,000	$ 97,682,000	$ 159,251,000	$ 40,952,000
Securities carried at fair value	7,074,000	19,694,000
Restricted cash held in escrows	19,084,000	13,250,000
Other assets	28,135,000	2,464,000
TOTAL ASSETS	968,485,000	923,163,000
LIABILITIES AND MEMBERS' CAPITAL
TOTAL LIABILITIES AND EQUITY	968,485,000	923,163,000
Carrying value of the Trust's investment in Vintage Housing Holding	139,061,000	134,859,000
Vintage Housing Holding LLC [Member]
ASSETS
Cash and cash equivalents	5,469,000	6,555,000
Real estate, net	360,851,000	340,666,000
Restricted cash held in escrows	45,380,000	41,878,000
Receivables and other assets	19,964,000	26,681,000
TOTAL ASSETS	431,664,000	415,780,000
LIABILITIES AND MEMBERS' CAPITAL
Mortgage and notes payable	313,078,000	298,654,000
Other liabilities	47,443,000	53,687,000
Non-controlling interests	18,006,000	15,997,000
Members' Capital	53,137,000	47,442,000
TOTAL LIABILITIES AND EQUITY	431,664,000	415,780,000
Carrying value of the Trust's investment in Vintage Housing Holding	33,706,000	30,534,000
CDH CDO LLC [Member]
ASSETS
Cash and cash equivalents	2,031,000	1,885,000
Real estate debt investments carried at fair value	183,110,000	185,060,000
Securities carried at fair value	80,463,000	95,994,000
Real estate, net		19,909,000
Interest and other receivables	1,066,000	1,030,000
Other assets	319,000	3,893,000
TOTAL ASSETS	266,989,000	307,771,000
LIABILITIES AND MEMBERS' CAPITAL
Collateralized debt obligation carried at fair value	153,361,000	191,345,000
Mortgage and notes payable		22,293,000
Interest rate swap liability	8,270,000	11,413,000
Other liabilities	2,727,000	5,423,000
Non-controlling interests	102,000	102,000
Members' Capital	102,529,000	77,195,000
TOTAL LIABILITIES AND EQUITY	266,989,000	307,771,000
Carrying value of the Trust's investments in CDH CDO LLC	4,181,000	322,000
Carrying value of the Trust's investment in Vintage Housing Holding

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Fair Value Measurements - Trust Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets and Liabilities
Assets measured at fair value on a recurring basis	$ 7,286	$ 19,713
Securities Carried at Fair Value [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	7,074	19,694
Loan Securities Carried at Fair Value [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	226	11
Interest Rate Hedges [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	(14)	8
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	7,074	19,694
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Securities Carried at Fair Value [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	7,074	19,694
Significant Other Observable Inputs (Level 2) [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	(14)	8
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Hedges [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	(14)	8
Significant Unobservable Inputs (Level 3) [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	226	11
Significant Unobservable Inputs (Level 3) [Member] | Loan Securities Carried at Fair Value [Member]
Assets and Liabilities
Assets measured at fair value on a recurring basis	$ 226	$ 11

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Debt - Non-Recourse Secured Financings (Parenthetical) (Detail) (Hotel Wales Loan [Member])	Sep. 30, 2013
Hotel Wales Loan [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on floor rate	3.00%

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Subsequent Events

9 Months Ended

Sep. 30, 2013

Subsequent Events [Abstract]

Subsequent Events

19. Subsequent Events

Sealy Airpark Nashville – Foreclosure – On October 7, 2013 the lender foreclosed on the loan that was collateralized by the venture’s property located in Nashville, Tennessee. The Trust did not recognize a gain or loss in connection with the foreclosure as the investment was carried at $0 for financial reporting purposes.

WRT-Fenway Wateridge – Mortgage Loan – On October 15, 2013 the venture obtained a $7,000,000 first mortgage loan on its San Diego, California property. The loan bears interest at the greater of 6%, or LIBOR plus 4.5% per annum, requires monthly payments of interest only and matures on November 1, 2016. The venture purchased an interest rate cap which caps LIBOR at 2.5%. In connection with the financing, the Trust received a distribution of $6,255,000 in partial redemption of its preferred equity investment. The Trust retains the balance of its preferred equity interest as well as a 50% equity interest in the venture.

WRT-Elad Equity – Mortgage Loan Refinancing – On October 18, 2013 the venture which owns the property known as the Sullivan Center located at One South State Street, Chicago, Illinois obtained a new $113,500,000 first mortgage loan. The loan bears interest at a rate of 3.95% per annum, requires monthly payments of interest only and matures on November 6, 2018. The proceeds from the loan were used to repay the existing $110,550,000 first mortgage loan which bore interest at a rate of 11.0% per annum.

Summit Pointe Apartments – Equity Investment – On October 25, 2013 the Trust contributed $4,933,000 for an 80% preferred equity interest in a newly formed venture. On the same date, the venture acquired a 184 unit garden apartment complex known as Summit Pointe Apartments located in Oklahoma City, Oklahoma for a gross purchase price of $14,500,000. In connection with the acquisition, the venture assumed an existing $9,248,000 first mortgage loan. The loan bears interest at a rate of 5.7% per annum, requires monthly payments of principal and interest and matures in February 2021. Management for the venture has not finalized the acquisition accounting and therefore is not able to provide the disclosures otherwise required by ASC 805.

Pursuant to the terms of the venture agreement, the Trust will hold a preferred equity interest which entitles it to an 8% preferred return from cash flow and, upon disposition of the property, a minimum preferred return equal to a 12% IRR.

Luxury Residential – Property Acquisition – On October 31, 2013 the Trust closed on its acquisition of four newly constructed Class A luxury apartment buildings for an aggregate purchase price of $246,000,000. The properties are located in Phoenix, Arizona; Stamford, Connecticut; Houston, Texas and San Pedro, California. The acquisition was funded with a $150,000,000 first mortgage loan which is cross collateralized by all four properties. The loan bears interest at a rate of LIBOR plus 2%, requires monthly payments of interest only and matures on October 31, 2016 with two one year extension options. The balance of the purchase was funded from cash on hand. Management has not finalized the acquisition accounting and therefore is not able to provide the disclosures otherwise required by ASC 805.

On November 6, 2013, New Valley LLC (“New Valley”) contributed approximately $16,350,000 to the entity that acquired the properties in exchange for an indirect 16.3% interest in the properties. Winthrop retained the balance and has the right to make all decisions with respect to each of the properties other than the Stamford, Connecticut property, subject to obtaining New Valley’s consent to certain major decisions. With respect to the Stamford, Connecticut property, prior to November 6, 2016 the consent of New Valley is required on all matters other than those that are administrative in nature. New Valley has the right at any time after November 6, 2015 (or in certain instances prior thereto), but on or prior to November 6, 2016, to have its interest in the venture redeemed for a 50% interest in the Stamford, Connecticut property.

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Consolidated Statements of Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Dividends paid or accrued on Common Shares of Beneficial Interest	$ 0.4875	$ 0.4875
Dividends paid or accrued on Series D Preferred Share	$ 1.7344	$ 1.15625
Accumulated Distributions in Excess of Net Income [Member]
Dividends paid or accrued on Common Shares of Beneficial Interest	$ 0.4875	$ 0.4875
Dividends paid or accrued on Series D Preferred Share	$ 1.7344	$ 1.15625

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Organization

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Organization

1. Organization

Winthrop Realty Trust (“Winthrop”), a real estate investment trust (“REIT”) under Sections 856-860 of the Internal Revenue Code is an unincorporated association in the form of a business trust organized in Ohio under a Declaration of Trust dated August 1, 1961, as amended and restated on May 21, 2009, which has as its stated principal business activity the ownership and management of, and lending to, real estate and related investments.

Winthrop conducts its business through WRT Realty L.P., a Delaware limited partnership (the “Operating Partnership”). Winthrop is the sole general partner of, and owns directly and indirectly, 100% of the limited partnership interest in the Operating Partnership. All references to the “Trust” refer to Winthrop and its consolidated subsidiaries, including the Operating Partnership.

The Trust is engaged in the business of owning real property and real estate related assets which it categorizes into three segments: (i) ownership of investment properties including wholly owned properties and investments in joint ventures which own properties (“operating properties”); (ii) origination and acquisition of loans collateralized directly or indirectly by commercial and multi-family real property (collectively “loan assets”); and (iii) equity and debt interests in other real estate investment trusts (“REIT securities”).

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Acquisitions, Dispositions, Leasing and Financing Activities

9 Months Ended

Sep. 30, 2013

Business Combinations [Abstract]

Acquisitions, Dispositions, Leasing and Financing Activities

4. Acquisitions, Dispositions, Leasing and Financing Activities

Operating Property Activity:

1515 Market Street – Loan Modification and Equity Acquisition - On February 1, 2013 the Trust entered into a loan modification agreement which extended the maturity date to February 1, 2016, increased the loan balance to $71,629,000 (from $70,000,000) and changed the interest rate to be the greater of 7.5% or LIBOR plus 6.5%. The loan balance can be increased through future funding advances up to an aggregate of $6,000,000 to cover tenant improvements, capital expenditures and leasing commissions. For each $500,000 of future advances, the interest rate increases by 0.10%. The loan modification also provides the Trust, in its capacity as the lender, with a 40% participation interest in the case of a capital event.

Simultaneously with the modification of the loan, the Trust acquired, for $10,000, an indirect 49% equity interest in the property. As part of the transaction, the Trust acquired the general partner interest in the property. Management has determined that this entity is a variable interest entity (“VIE”) and that the Trust is the primary beneficiary of the VIE. As a result, the Trust has consolidated this property as of February 1, 2013. All intercompany transactions have been eliminated in consolidation. For segment reporting purposes, this investment will be classified within the operating properties segment as of February 1, 2013. Prior to consolidation, this investment was part of the loan assets segment. See Note 18 for additional information related to the consolidation of this property.

Atrium Mall LLC – Equity Investment - On June 20, 2013 the Trust, through a newly formed 50-50 joint venture with Marc Realty, acquired a non-performing $10,650,000 mortgage loan for $6,625,000. In addition, the joint venture paid $1,137,000 to fund escrows at the closing. The Trust invested a total of $3,935,000 in this joint venture during the quarter ended June 30, 2013 and accounted for this investment using the equity method. The loan was in maturity default at the time of acquisition and was acquired with the intention of foreclosing or working out a consensual assignment with the borrower. The loan was collateralized by a leasehold interest in the Atrium Mall in Chicago, Illinois. The leasehold interest is for 71,000 square feet of commercial/retail space that comprises the bottom three floors of an office building known as the James R. Thompson building of which the lease expires in September 2014 with six automatic five-year extensions which are exercisable at the lessee’s option. The building is owned by the State of Illinois.

On July 26, 2013 the joint venture entered into an agreement with the borrower pursuant to which the borrower conveyed the leasehold interest to the venture in lieu of foreclosure. Accordingly, the venture now holds the leasehold interest in the property.

701 Seventh Avenue – Equity Investment – On July 9, 2013 the Trust agreed to increase its ownership in the current joint venture and to participate in the future hotel development. In doing so, the Trust has committed to invest up to an aggregate of $120,000,000 inclusive of contributions already made. During the quarter ended September 30, 2013, the Trust made additional capital contributions to the venture totaling $5,403,000. In October 2013 the Trust made an additional contribution of $16,686,000 to the venture reducing its overall future funding commitment to $67,198,000.

Luxury Residential – Property Acquisition – On August 13, 2013 the Trust entered into a binding purchase agreement to acquire four recently constructed Class A luxury apartment buildings for an aggregate purchase price of $246,000,000. At signing, the Trust made a $25,500,000 deposit which is non-refundable, except in limited circumstances. On October 7, 2013 the Trust made an additional non-refundable deposit of $7,500,000 to extend the closing date to November 11, 2013. See Note 19 for discussion on activity subsequent to September 30, 2013.

Andover, Massachusetts – Property Sale - On March 28, 2013 the Trust sold its Andover, Massachusetts office property to an independent third party for gross sale proceeds of $12,000,000. After costs and pro-rations, the Trust received net proceeds of approximately $11,425,000 and recorded a gain of $2,775,000 on the sale of the property. The results of operations for this property have been classified as discontinued operations for all periods presented in the consolidated financial statements.

Deer Valley, Arizona – Property Sale - On June 11, 2013 the Trust sold its Deer Valley, Arizona property to an independent third party for gross sale proceeds of $20,500,000. After costs and pro-rations, the Trust received net proceeds of approximately $19,585,000 and recorded a gain of $6,752,000 on the sale of the property. The results of operations for this property have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

Denton, Texas – Property Sale - On July 2, 2013 the Trust sold its Denton, Texas property to an independent third party for gross sale proceeds of $1,850,000. After costs and pro-rations, the Trust received net proceeds of approximately $1,703,000 and recorded no gain or loss on the sale of the property. The results of operations for all periods have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

Seabrook, Texas – Property Sale - On August 1, 2013 the Trust sold its Seabrook, Texas property to an independent third party for gross sale proceeds of $3,300,000. After costs and pro-rations, the Trust received net proceeds of approximately $3,202,000 and recorded a gain of $1,428,000 on the sale of the property. The results of operations for all periods have been classified as discontinued operations for all periods presented in the consolidated interim financial statements.

Loan Asset Activity:

Playa Vista - On January 24, 2013 the Trust originated a $20,500,000 mezzanine loan collateralized by a 260,000 square foot office campus in the Los Angeles, California area. The loan is subordinate to an $80,300,000 mortgage loan, matures January 23, 2015, bears interest at LIBOR plus 14.25% per annum, with a 0.5% LIBOR floor and requires payments of interest only at a rate of 8.25% with the remaining interest being accrued and added to principal. In connection with the origination, the borrower paid to the Trust an origination fee of $205,000. On March 1, 2013 the Trust sold a 50% pari passu participation interest in the loan for $10,250,000 and gave the transferee a credit of $100,000 from the initial loan origination. No gain or loss was recognized on the sale of the interest.

10 Metrotech Loan LLC – Equity Investment Repayment – On July 30, 2013 the $40,000,000 loan held by this venture was paid off at par. The venture, which had acquired the loan in August 2012 for $32,500,000, recognized $7,500,000 of discount accretion income in the current period in connection with the payoff at par. As a result of the payoff, the Trust received a distribution of $13,333,000 and recorded equity income of $2,676,000 in connection with its 33.33% ownership interest in the venture.

WRT-Elad One South State Lender LP – Equity Investment – On August 21, 2013 the Trust closed on an agreement to acquire the additional 50% joint venture interest (“Acquired Interest”) that was held by its joint venture partner, Elad Canada Inc. (“Elad”) for $30,000,000 (“Acquisition Price”). WRT-Elad One South State Lender LP (“Lender LP”) holds a mezzanine loan indirectly collateralized by the property located at One South State Street, Chicago, Illinois known as the Sullivan Center. The venture’s mezzanine loan had an outstanding balance of principal and accrued interest of approximately $56,150,000 at the time of the transaction discussed above. Concurrently, the Trust entered into an option agreement (“Option”) with Elad granting Elad the option, but not obligation, to repurchase their interest in the venture for the Acquisition Price adjusted for the pro-rata portion of any accrued and unpaid interest and principal payments made by the borrower. Per the terms of the agreements, the Acquired Interest and Option cannot be transferred to parties other than the Trust and Elad. The term of the Option corresponds with Lender LP’s mezzanine loan. Given the nature of the Option and the specific rights of Elad, the transaction is accounted for as a secured financing arrangement under ASC 860- Transfers and Servicing. The Trust will recognize interest income on the secured financing receivable in accordance with GAAP, at an annual interest rate of 15%, and will continue to recognize equity income on its previously held 50% interest in the venture.

Financing Activity:

Recourse Secured Financings – Loan Payments - During the three and nine months ended September 30, 2013, several of the condominium units collateralizing the Queensridge loan receivable were sold resulting in payments to the Trust of approximately $5,571,000 and $30,648,000, respectively. With the proceeds, the Trust satisfied its recourse debt with KeyBank at June 30, 2013.

1515 Market Street – New First Mortgage - On April 25, 2013 the entity that holds title to the property located at 1515 Market Street in Philadelphia, Pennsylvania (the “1515 Market Owner”) obtained a $43,000,000 non-recourse first mortgage loan (“First Mortgage”) from an unaffiliated third party. The First Mortgage bears interest at LIBOR plus 2.0% per annum, requires monthly payments of interest only and matures on May 1, 2016. On the same date, the 1515 Market Owner entered into an interest rate swap agreement which effectively fixes LIBOR at 0.50% for the term of the First Mortgage. The Trust, which held the mortgage loan (“Original Mortgage”) collateralized by the property at the time of the closing of the First Mortgage, received $38,472,000 of loan proceeds from the First Mortgage financing which reduced the balance on the Original Mortgage to $33,157,000. The Original Mortgage is now subordinate to the First Mortgage, bears interest at an effective rate of 12.9% per annum and is secured by a second mortgage on the property. The Trust’s investment in the Original Mortgage has been reduced to $21,098,000 resulting in an effective interest rate on the Trust’s cash investment in this asset of 19.6%. Due to the Trust’s ownership of a 49% interest, including the general partner interest, in the 1515 Market Owner and an additional 40% profits participation interest in the property, the Trust consolidates the operation of this property and the Original Mortgage, and all intercompany transactions are eliminated in consolidation.

Churchill – Financing - On June 28, 2013 the Trust obtained a $5,100,000 first mortgage on its Churchill, Pennsylvania property. The loan bears interest at a rate of 3.5% per annum, requires monthly payments of principal and interest and matures on August 1, 2024. After closing costs, the Trust received net proceeds of approximately $4,922,000.

Public Offering:

On September 30, 2013 the Trust closed a public offering of 2,750,000 Common Shares at a price of $11.45 per share. The Trust received net proceeds of $30,250,000 after the underwriting discount but prior to offering expenses.

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Derivative Financial Instruments - Additional Information (Detail) (Cash Flow Hedging [Member], Interest Rate Hedges [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Cash Flow Hedging [Member] | Interest Rate Hedges [Member]
Derivative [Line Items]
Interest rate hedges designated and qualifying as a cash flow hedge	$ 150,000	$ 16,000	$ 20,000	$ 73,000

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Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2013

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated interim financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial statements and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements, although management believes that the disclosures presented herein are adequate to make the accompanying unaudited consolidated interim financial statements not misleading. The accompanying unaudited consolidated interim financial statements should be read in conjunction with the audited consolidated annual financial statements and the notes thereto included in Winthrop’s Annual Report on Form 10-K for the year ended December 31, 2012 filed with the SEC. In the opinion of management, all adjustments considered necessary for fair statements have been included, and all such adjustments are of a normal recurring nature. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of the operating results for the full year.

The accompanying unaudited consolidated interim financial statements represent the consolidated results of Winthrop, its wholly-owned taxable REIT subsidiary, WRT-TRS Management Corp., the Operating Partnership and all majority-owned subsidiaries and affiliates over which the Trust has financial and operating control and variable interest entities (“VIE“s) in which the Trust has determined it is the primary beneficiary. All significant intercompany balances and transactions have been eliminated in consolidation. The Trust accounts for all other unconsolidated joint ventures using the equity method of accounting. Accordingly, the Trust’s share of the earnings of these joint ventures and companies is included in consolidated net income.

Stock-Based Compensation

Pursuant to the Trust’s 2007 Long Term Stock Incentive Plan the Trust may, from time to time, issue stock-based compensation awards to certain eligible persons including those performing services for FUR Advisors LLC (“FUR Advisors”), the Trust’s external advisor. During the first nine months of 2013, the Trust issued 600,000 restricted common shares of beneficial interest. See Note 16 for further discussion. The Trust accounts for this stock-based compensation in accordance with ASC 505-50, Equity-Based Payments to Non-Employees. Until the awards are no longer subject to forfeiture, the Trust measures stock-based compensation expense at each reporting date for any changes in fair value and recognizes the expense prorated for the portion of the requisite service period completed.

Reclassifications

Certain prior year balances of accounts receivable have been reclassified to accrued rental income in order to conform to the current year presentation. Discontinued operations for all periods presented in the Consolidated Statements of Operations include the operations of the Trust’s retail properties in Seabrook, Texas and Denton, Texas which were disposed of in August 2013 and July 2013, respectively, and the Trust’s office properties in Deer Valley, Arizona and Andover, Massachusetts which were disposed of in June 2013 and March 2013, respectively, and the Trust’s retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana, both of which were disposed of in September 2012. Also included in discontinued operations for all periods presented are the operations of the Trust’s office property in Lisle, Illinois which is currently under contract to be sold and is classified as held for sale at September 30, 2013. It is expected that the sale will be consummated during the fourth quarter of 2013.

Out of Period Adjustment

During the three months ended September 30, 2013, the Trust recorded an out of period adjustment in the amount of $224,000 to correct the capitalization of interest on an equity method investment in the Trust’s balance sheet and interest expense in the statement of operations. As a result, the Trust’s net income and income from continuing operations was understated by $224,000 for the period ended June 30, 2013 and overstated by the same amount for the three months ended September 30, 2013. Additionally, for the period ended June 30, 2013, the Trust’s cash provided by operating activities was understated by $224,000 and cash provided by investing activities was overstated by $224,000. The Trust concluded that this adjustment is not material to the current period or the prior period’s consolidated financial statements. As such, this cumulative charge was recorded in the statement of operations for the three months ended September 30, 2013, rather than restating prior periods.

Earnings Per Share

The Trust determines basic earnings per share on the weighted average number of common shares of beneficial interest (“Common Shares”) outstanding during the period and reflects the impact of participating securities. The Trust computes diluted earnings per share based on the weighted average number of Common Shares outstanding combined with the incremental weighted average effect from all outstanding potentially dilutive instruments.

The Trust has calculated earnings per share in accordance with relevant accounting guidance for participating securities and the two class method. The reconciliation of earnings attributable to Common Shares outstanding for the basic and diluted earnings per share calculation is as follows (in thousands, except per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Basic
Income from continuing operations	$	12,167		$	15,962		$	23,404		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		10,278			12,237			17,252			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(9	)		—			(24	)		—
Net income applicable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Basic	$	0.27		$	0.37		$	0.76		$	0.61
Diluted
Income from continuing operations	$	12,167		$	15,962		$	23,404		$	25,690
(Income) loss attributable to non-controlling interest		995			(939	)		2,419			435
Preferred dividend on Series D Preferred Shares		(2,787	)		(2,786	)		(8,360	)		(6,498	)
Dividend on Restricted Shares		(97	)		—			(211	)		—
Income from continuing operations applicable to Common Shares		10,278			12,237			17,252			19,627
Income (loss) from discontinued operations		(1,434	)		85			8,025			594
Allocation of undistributed earnings to Restricted Shares		(9	)		—			(24	)		—
Net income applicable to Common Shares	$	8,835		$	12,322		$	25,253		$	20,221
Basic weighted-average Common Shares		33,076			33,075			33,047			33,064
Stock options (1)		2			1			2			—
Restricted shares (2)		70			—			40			—
Diluted weighted-average Common Shares		33,148			33,076			33,089			33,064
Income from continuing operations	$	0.31		$	0.37		$	0.52		$	0.59
Income (loss) from discontinued operations		(0.04	)		—			0.24			0.02
Earnings per Common Share - Diluted	$	0.27		$	0.37		$	0.76		$	0.61

(1) The Trust’s outstanding stock options were dilutive for the three and nine months ended September 30, 2013 and 2012. The weighted-average stock options for the nine months ended September 30, 2012 was less than one thousand shares.

(2) The Trust’s restricted stock was dilutive for the three and nine months ended September 30, 2013.

For the quarter ended September 30, 2013, the Trust paid a regular quarterly dividend of $0.1625 per Common Share and a regular quarterly dividend of $0.578125 per share of its Series D Cumulative Redeemable Preferred Shares of Beneficial Interest (the “Series D Preferred Shares”).

Recently Issued Accounting Standards

On February 5, 2013, FASB issued ASU No. 2013-02: Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, to improve the transparency of reporting the reclassifications of significant amounts out of accumulated other comprehensive income. This guidance requires entities to present the effects on the line items of net income of significant reclassifications from accumulated other comprehensive income, either where net income is presented or in the notes, as well as cross-reference to other disclosures currently required under U.S. GAAP for other reclassification items (that are not required under U.S. GAAP) to be reclassified directly to net income in their entirety in the same reporting period. The new disclosure requirements will be effective for annual reporting periods beginning on or after January 1, 2013. The new disclosures will be required for both interim and annual reporting. The Trust has evaluated this new guidance and its adoption did not have a material impact on its consolidated financial statements.

On December 16, 2011, FASB issued ASU No. 2011-11: Balance Sheet (Topic 210)—Disclosures about Offsetting Assets and Liabilities, clarified by ASU No. 2013-1, which requires entities to disclose both gross information and net information about both instruments and transactions eligible for offset in the financial statements particularly for transactions related to derivatives, sale and repurchase agreements and reverse sale and repurchase agreements, and securities borrowing and securities lending arrangements. The new disclosure requirements will be effective for annual reporting periods beginning on or after January 1, 2013. The new disclosures will be required for all prior comparative periods presented. The Trust has evaluated this new guidance and its adoption did not have a material impact on its consolidated financial statements.

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Summary of Significant Accounting Policies - Reconciliation of Earnings Attributable to Common Shares Outstanding for the Basic and Diluted EPS (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Basic
Income from continuing operations	$ 12,167	$ 15,962	$ 23,404	$ 25,690
(Income) loss attributable to non-controlling interest	995	(939)	2,419	435
Preferred dividend on Series D Preferred Shares	(2,787)	(2,786)	(8,360)	(6,498)
Dividend on Restricted Shares	(97)		(211)
Income from continuing operations applicable to Common Shares	10,278	12,237	17,252	19,627
Income (loss) from discontinued operations	(1,434)	85	8,025	594
Allocation of undistributed earnings to Restricted Shares	(9)		(24)
Net income attributable to Common Shares	8,835	12,322	25,253	20,221
Basic Weighted-Average Common Shares	33,076	33,075	33,047	33,064
Income from continuing operations	$ 0.31	$ 0.37	$ 0.52	$ 0.59
Income (loss) from discontinued operations	$ (0.04)		$ 0.24	$ 0.02
Earnings per Common Share - Basic	$ 0.27	$ 0.37	$ 0.76	$ 0.61
Diluted
Income from continuing operations	12,167	15,962	23,404	25,690
(Income) loss attributable to non-controlling interest	995	(939)	2,419	435
Preferred dividend on Series D Preferred Shares	(2,787)	(2,786)	(8,360)	(6,498)
Dividend on Restricted Shares	(97)		(211)
Income from continuing operations applicable to Common Shares	10,278	12,237	17,252	19,627
Income (loss) from discontinued operations	(1,434)	85	8,025	594
Allocation of undistributed earnings to Restricted Shares	(9)		(24)
Net income attributable to Common Shares	$ 8,835	$ 12,322	$ 25,253	$ 20,221
Basic Weighted-Average Common Shares	33,076	33,075	33,047	33,064
Stock options (1)	2	1	2
Restricted shares (2)	70		40
Diluted weighted-average Common Shares	33,148	33,076	33,089	33,064
Income from continuing operations	$ 0.31	$ 0.37	$ 0.52	$ 0.59
Income (loss) from discontinued operations	$ (0.04)		$ 0.24	$ 0.02
Earnings per Common Share - Diluted	$ 0.27	$ 0.37	$ 0.76	$ 0.61

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Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Trust Assets Measured on a Recurring Basis

The table below presents the Trust’s assets measured at fair value on a recurring basis as of September 30, 2013 according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Assets and Liabilities
Securities carried at fair value	$	7,074	$	—		$	—	$	7,074
Loan securities carried at fair value		—		—			226		226
Interest rate hedges		—		(14	)		—		(14	)
	$	7,074	$	(14	)	$	226	$	7,286

The table below presents the Trust’s assets measured at fair value on a recurring basis as of December 31, 2012, according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Securities carried at fair value	$	19,694	$	—	$	—	$	19,694
Loan securities carried at fair value		—		—		11		11
Interest rate hedges		—		8		—		8
	$	19,694	$	8	$	11	$	19,713

Change in Fair Value for Financial Instruments

The table below includes a roll forward of the balance sheet amounts from January 1, 2013 to September 30, 2013 and from January 1, 2012 to September 30, 2012 including the change in fair value, for financial instruments classified by the Trust within Level 3 of the valuation hierarchy (in thousands). When a determination is made to classify a financial instrument within Level 3 of the valuation hierarchy, the determination is based upon the significance of the unobservable factors to the overall fair value measurement.

Loan Securities Carried at Fair Value	Nine Months Ended September 30, 2013		Nine Months Ended September 30, 2012
Fair value, January 1	$	11	$	5,309
Net unrealized gain		215		447
Fair value, September 30	$	226	$	5,756
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at September 30, 2013 and 2012, respectively	$	215	$	447

Trust Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The Table below presents the Trust’s assets measured at fair value on a non-recurring basis as of September 30, 2013, according to the level in the fair value hierarchy within which those measurements fall (in thousands):

Non-Recurring Basis	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets
Assets held for sale	$	—	$	—	$	2,421	$	2,421
	$	—	$	—	$	2,421	$	2,421

Carrying Value and Estimated Fair Value of Financial Instruments Not Recorded at Fair Value on a Recurring Basis

The carrying value and estimated fair value of financial instruments not recorded at fair value on a recurring basis but required to be disclosed at fair value were as follows (in thousands):

	September 30, 2013
					Fair value hierarchy level
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Loans receivable	$	108,163	$	122,876	$	—	$	—	$	122,876
Secured financing receivable		30,395		30,395		—		—		30,395
Mortgage loans payable		308,049		296,678		—		—		296,678
Senior notes payable		86,250		89,666		89,666		—		—
Secured financings		29,150		29,366		—		—		29,366
Notes payable		1,664		1,664		—		—		1,664

	December 31, 2012
					Fair value hierarchy level
	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Loans receivable	$	211,250	$	222,246	$	—	$	—	$	222,246
Mortgage loans payable		280,576		270,923		—		—		270,923
Senior notes payable		86,250		89,183		89,183		—		—
Secured financings		52,920		53,253		—		—		53,253
Notes payable		1,676		1,676		—		—		1,676

Trust's Financial Assets for Which the Fair Value Option was Elected

The following table presents as of September 30, 2013 and December 31, 2012 the Trust’s financial assets for which the fair value option was elected (in thousands):

Financial Instruments at Fair Value	September 30, 2013		December 31, 2012
Assets
Securities carried at fair value:
REIT common shares	$	7,074	$	19,694
Loan securities carried at fair value		226		11
	$	7,300	$	19,705

Difference Between Fair Values and the Aggregate Contractual Amounts

The table below presents as of September 30, 2013 the difference between fair values and the aggregate contractual amounts due for which the fair value option has been elected (in thousands):

	Fair Value at September 30, 2013		Amount Due Upon Maturity		Difference
Assets
Loan securities carried at fair value	$	226	$	1,130	$	904

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Debt (Tables)

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Mortgage Loans Payable

The Trust’s mortgage loans payable at September 30, 2013 and December 31, 2012 are summarized as follows (in thousands):

Location of Collateral	Maturity			Spread Over LIBOR (1)			Interest Rate at September 30, 2013			September 30, 2013		December 31, 2012
Memphis, TN		Aug 2014			Libor + 2.5	% (2)		3.00	%	$	13,197	$	13,408
Lisle, IL		Oct 2014			Libor + 2.5	% (3)		2.69	%		5,752		5,752
Chicago, IL		Apr 2015			—			6.25	%		8,619		8,700
Chicago, IL		Mar 2016			—			5.75	%		19,941		20,200
Houston, TX		Apr 2016			—			6.05	%		48,460		52,052
New York, NY		May 2016			Libor + 2.5	% (4)		3.50	%		51,982		51,982
Philadelphia, PA		May 2016			Libor + 2.0	% (5)		2.50	%		42,684		—
Greensboro, NC		Aug 2016			—			6.22	%		14,837		15,139
Lisle, IL		Mar 2017			—			5.55	%		5,488		5,543
Cerritos, CA		Jan 2017			—			5.07	%		23,153		23,184
Orlando, FL		Jul 2017			—			6.40	%		37,138		37,580
Plantation, FL		Apr 2018			—			6.45	%		10,717		10,811
Meriden, CT		Oct 2022			—			3.95	%		21,000		21,000
Churchill, PA (6)		Aug 2024			—			3.50	%		5,081		—
Amherst, NY			(7)		—			5.65	%		—		15,225
										$	308,049	$	280,576

(1) The one-month LIBOR rate at September 30, 2013 was 0.17885%.

(2) The loan has a LIBOR floor of 0.5% and an interest rate cap which caps LIBOR at 0.5%.

(3) The loan has an interest rate cap which caps LIBOR at 1%.

(4) The loan has a LIBOR floor of 1% and an interest rate cap which caps LIBOR at 1.75%.

(5) The loan has an interest rate swap which effectively fixes LIBOR at 0.5%.

(6) The loan was obtained on June 28, 2013. See Note 4 for details on this transaction.

(7) The loan was fully satisfied on July 26, 2013.

Non-Recourse Secured Financings

The Trust’s non-recourse secured financings at September 30, 2013 and December 31, 2012 are summarized as follows (in thousands):

									Carrying Value
Collateral	Maturity		Spread Over LIBOR/ Prime			Interest Rate at September 30, 2013			September 30, 2013		December 31, 2012
Hotel Wales Loan		Oct 2014		LIBOR plus 1.25	% (1)		4.25	%	$	14,000	$	14,000
San Marbeya Loan		Jan 2015		—			4.85	%		15,150		15,150
									$	29,150	$	29,150

(1) The loan has a LIBOR floor of 3%.

Recourse Secured Financings

The Trust’s recourse secured financing was repaid in full at September 30, 2013. Details of the recourse secured financing are as follows (in thousands):

								Carrying Value
Collateral	Maturity		Spread Over LIBOR/Prime			Interest Rate at September 30, 2013		September 30, 2013		December 31, 2012
Queensridge Loan		Nov 2014		LIBOR plus 4	%		N/A	$	—	$	23,770
								$	—	$	23,770

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Revolving Line of Credit - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Debt Disclosure [Abstract]
Line of credit facility, maximum borrowing capacity	$ 50,000,000		$ 50,000,000
Interest rate, description			LIBOR plus 3%
Line of credit facility basis spread on variable rate			3.00%
Line of credit facility, expiration date			Mar. 03, 2014
Line of credit facility extended maturity date			Mar. 03, 2015
Line of credit facility, amount outstanding	0		0		0
Line of credit facility, commitment fee amount	$ 44,000	$ 44,000	$ 131,000	$ 106,000

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Reportable Segments (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Summary of Assets by Business Segment

The following table summarizes the Trust’s assets by business segment for the periods ended September 30, 2013 and December 31, 2012 (in thousands):

	September 30, 2013		December 31, 2012
Assets
Operating properties	$	630,666	$	562,822
Loan assets		154,265		239,534
REIT securities		7,074		19,694
Corporate
Cash and cash equivalents		165,762		97,682
Restricted cash		7,387		—
Accounts receivable and prepaids		574		336
Deferred financing costs		2,757		3,095
Total Assets	$	968,485	$	923,163
Capital Expenditures
Operating Properties	$	2,835	$	12,417

Summary of Revenues from Operating Properties, Loan Assets and REIT Securities and Expenses Incurred by Each Segment

The following table presents a summary of revenues from operating properties, loan assets and REIT securities and expenses incurred by each segment for the three and nine months ended September 30, 2013 and 2012 (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30,			September 30,			September 30,			September 30,
	2013			2012			2013			2012
Operating Properties
Rents and reimbursements	$	15,099		$	12,224		$	45,026		$	35,022
Operating expenses		(5,272	)		(3,335	)		(14,697	)		(10,643	)
Real estate taxes		(1,705	)		(1,160	)		(4,184	)		(3,116	)
Equity in earnings of preferred equity investment in Fenway-Wateridge		189			—			576			—
Equity in loss of Sealy Northwest Atlanta		(130	)		(109	)		(363	)		(273	)
Equity in loss of Sealy Newmarket		—			(704	)		—			(2,171	)
Equity in income (loss) of Marc Realty investment		(26	)		377			(17	)		33
Equity in income (loss) of WRT-Elad		905			(57	)		1,515			458
Equity in income of Vintage		2,525			1,392			7,142			2,326
Equity in income of 701 Seventh Avenue		1,055			—			2,375			—
Equity in income of Fenway-Wateridge		50			—			133			—
Equity in income of Mentor		12			12			45			18
Equity in loss of Atrium Mall		(31	)		—			(31	)		—
Equity in income of F-II Co-invest		—			—			—			232
Operating properties operating income		12,671			8,640			37,520			21,886
Depreciation and amortization expense		(4,923	)		(4,416	)		(14,703	)		(11,623	)
Interest expense		(3,272	)		(3,126	)		(11,131	)		(9,230	)
Settlement expense		(16	)		—			(150	)		—
Operating properties net income		4,460			1,098			11,536			1,033
Loan Assets
Interest income		3,011			2,985			10,912			8,130
Discount accretion		806			425			2,283			5,984
Unrealized gain on loan securities carried at fair value		—			371			215			447
Equity in income of ROIC Riverside		—			238			—			706
Equity in loss of ROIC Lakeside Eagle		(7	)		(16	)		(22	)		(32	)
Equity in income of Concord Debt Holdings		2,970			35			3,041			386
Equity in income of CDH CDO		265			136			415			670
Equity in income of Concord Debt Holdings (1)		20			2			49			30
Equity in income of CDH CDO (1)		3,367			855			4,274			1,333
Equity in income of WRT-Stamford		256			232			701			548
Equity in income (loss) of SoCal Office Loan Portfolio		—			10,348			(2	)		9,710
Equity in (loss) income of RE CDO Management		(51	)		18			3,710			46
Equity in income of 10 Metrotech		2,676			50			3,284			31
Loan assets operating income		13,313			15,679			28,860			27,989
General and administrative expense		(2	)		(15	)		(37	)		(40	)
Interest expense		(335	)		(336	)		(1,562	)		(1,004	)
Loan assets net income		12,976			15,328			27,261			26,945
REIT Securities
Interest and dividends		100			312			350			904
(Loss) gain on sale of securities carried at fair value		(31	)		—			(133	)		41
Unrealized gain (loss) on securities carried at fair value		—			3,113			(142	)		7,254
REIT securities net income		69			3,425			75			8,199
Net income from segments before corporate income (expense)		17,505			19,851			38,872			36,177
Reconciliations to GAAP Net Income:
Corporate Income (Expense)
Interest income		101			242			286			433
Interest expense		(1,828	)		(954	)		(5,482	)		(1,326	)
General and administrative		(1,111	)		(767	)		(3,021	)		(2,407	)
Related party fees		(2,309	)		(2,316	)		(6,866	)		(6,641	)
Transaction costs		(106	)		(30	)		(158	)		(335	)
State and local taxes		(85	)		(64	)		(227	)		(211	)
Income from continuing operations		12,167			15,962			23,404			25,690
(Loss) income from discontinued operations attributable to Winthrop Realty Trust		(1,434	)		85			8,025			594
Net income		10,733			16,047			31,429			26,284
Net loss (income) attributable to non-controlling interest		995			(939	)		2,419			435
Net Income Attributable to Winthrop Realty Trust	$	11,728		$	15,108		$	33,848		$	26,719

(1) Represents the interest acquired from Lexington Realty Trust on May 1, 2012.

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Debt - Recourse Secured Financings (Detail) (USD $)	9 Months Ended				9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013 Recourse Secured Financings [Member]	Jun. 30, 2013 Recourse Secured Financings [Member]	Dec. 31, 2012 Recourse Secured Financings [Member]	Sep. 30, 2013 Recourse Secured Financings [Member] Queensridge Loan [Member]	Dec. 31, 2012 Recourse Secured Financings [Member] Queensridge Loan [Member]
Debt Instrument [Line Items]
Maturity					Nov 2014
Loan bears interest, description of variable rate basis	LIBOR plus 3%				LIBOR plus 4%
Interest rate
Recourse secured financings			$ 23,770,000	$ 23,770,000		$ 23,770,000

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Receivables - Interest, Dividend and Discount Accretion Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Receivables [Abstract]
Interest on loan assets	$ 3,011	$ 2,985	$ 10,912	$ 8,130
Accretion of loan discount	806	425	2,283	5,984
Interest and dividends on securities	100	312	350	904
Total interest, dividends, and discount accretion	$ 3,917	$ 3,722	$ 13,545	$ 15,018

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Acquisitions, Dispositions, Leasing and Financing Activities - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended			9 Months Ended	1 Months Ended		9 Months Ended						9 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended				1 Months Ended		1 Months Ended		1 Months Ended						3 Months Ended	9 Months Ended	1 Months Ended		1 Months Ended		1 Months Ended	3 Months Ended	9 Months Ended
	Jun. 01, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Churchill [Member]	Mar. 31, 2013 Playa Vista Mezzanine Loan [Member]	Jan. 31, 2013 Playa Vista Mezzanine Loan [Member] sqft	Sep. 30, 2013 Playa Vista Mezzanine Loan [Member]	Feb. 28, 2013 Playa Vista Mezzanine Loan [Member]	Jan. 24, 2013 Playa Vista Mezzanine Loan [Member]	Sep. 30, 2013 Recourse Secured Financings [Member]	Jun. 30, 2013 Recourse Secured Financings [Member]	Dec. 31, 2012 Recourse Secured Financings [Member]	Sep. 30, 2013 1515 Market Street [Member]	Jan. 31, 2013 1515 Market Street [Member]	Jun. 11, 2013 Deer Valley [Member]	Sep. 30, 2013 701 Seventh Avenue [Member]	Jul. 09, 2013 701 Seventh Avenue [Member]	Aug. 31, 2012 10 Metrotech Loan LLC [Member]	Sep. 30, 2013 10 Metrotech Loan LLC [Member]	Jul. 30, 2013 10 Metrotech Loan LLC [Member]	Dec. 31, 2012 10 Metrotech Loan LLC [Member]	Aug. 21, 2013 WRT-Elad One South State Lender LP [Member]	Sep. 30, 2013 WRT-Elad One South State Lender LP [Member]	Oct. 31, 2013 Subsequent Event [Member] 701 Seventh Avenue [Member]	Aug. 21, 2013 Mezzanine [Member] WRT-Elad One South State Lender LP [Member]	Jul. 02, 2013 Denton Property Sale [Member]	Aug. 01, 2013 Seabrook Property Sale [Member]	Mar. 28, 2013 Residential [Member]	Aug. 13, 2013 Residential [Member]	Oct. 07, 2013 Residential [Member] Subsequent Event [Member]	Jun. 28, 2013 First Mortgage [Member] Churchill [Member]	Sep. 30, 2013 Queensridge [Member]	Sep. 30, 2013 Queensridge [Member]	Apr. 30, 2013 1515 Market Street Loan Modification [Member] Original Mortgage [Member]	Apr. 25, 2013 1515 Market Street Loan Modification [Member] Original Mortgage [Member]	Apr. 30, 2013 1515 Market Street Loan Modification [Member] First Mortgage [Member]	Apr. 25, 2013 1515 Market Street Loan Modification [Member] First Mortgage [Member]	Jun. 20, 2013 Atrium Property [Member]	Jun. 30, 2013 Atrium Property [Member]	Sep. 30, 2013 Atrium Property [Member] Times sqft
Loans At Acquisition Date [Line Items]
Increased outstanding principal amount																	$ 71,629,000
Maturity date of loan																	Feb. 01, 2016
Mortgage loans on real estate adjusted interest rate minimum																	7.50%
LIBOR plus																	6.50%
Increased loan balance through future funding advances																	6,000,000
Future advances																	500,000
First mortgage loan of Trust										80,300,000							70,000,000																	5,100,000						43,000,000
Interest rate increase for each future advances																	0.10%
Percentage for participation																	40.00%																					40.00%
Acquired interest rate through indirect																	49.00%																					49.00%
Payment to acquire indirect interest																10,000
Aggregate investment		139,061,000		139,061,000		134,859,000														120,000,000		11,000		10,845,000
Additional contribution	5,850,000			11,982,000	47,925,000														5,403,000								16,686,000
Reduction of future funding commitments																											67,198,000
Aggregate purchase price		380,240,000		380,240,000		378,737,000																										246,000,000
Non-refundable deposits																																25,500,000	7,500,000
Gross proceeds from sales																		20,500,000											1,850,000	3,300,000	12,000,000
Net proceeds																		19,585,000											1,703,000		11,425,000
Gain on sale of property		1,421,000	945,000	10,948,000	945,000													6,752,000											0	1,428,000	2,775,000
Net proceeds				36,217,000	7,024,000																									3,202,000
Amount of non-performing mortgage loan acquired																																						33,157,000			10,650,000		10,650,000
Non-performing mortgage loan acquisition cost				21,437,000	64,970,000																																				6,625,000		6,625,000
Joint venture paid																																									1,137,000		1,137,000
Investment by trust																									30,000,000																	3,935,000
Area of collateralized building																																											71,000
Lease expiration date																																											2014-09
Number of Automatic Extensions for building lease																																											6
Extension period for lease																																											5 years
Loan held by this venture																							40,000,000
Acquisition of loan																					32,500,000
Discount accretion income				37,000	14,065,000																7,500,000
Equity income Distribution				19,354,000	17,097,000																13,333,000
Equity income recorded																					2,676,000
Nominal % Ownership																					33.33%				50.00%	50.00%
Loans Receivable		108,163,000		108,163,000		211,250,000																						56,150,000
Aggregate principal payments		5,571,000		30,648,000																															5,571,000	30,648,000
Pay downs of recourse debt														23,770,000	23,770,000
Principal amount of the loan												20,500,000
Office building area, square foot									260,000
LIBOR plus										14.25%
Pari passu participation interest in the loan											50.00%
Loan bears interest, description of variable rate basis				LIBOR plus 3%					0.5% LIBOR floor
Mortgage loan, LIBOR floor rate									0.50%
Interest rate										8.25%
Origination Fee (Amount)												205,000
Proceeds from sale of participation interest in loan								10,250,000
Credit allowed to borrower											100,000
Maturity date of loan							Aug. 01, 2024		Jan. 23, 2015																														May 01, 2016
Gain or loss recognized on the sale of the interest										0
Loan bears interest, description of variable rate basis																																							LIBOR plus 2.0%
Mortgage loan, LIBOR rate																																							0.50%
Loan proceeds received																																							38,472,000
Interest rate on mortgage loan							3.50%																														12.90%
Mortgage loans on real estate reduced investment amount																																						21,098,000
Mortgage loans on real estate effective interest rate on investment																																					19.60%
Net proceeds							4,922,000
Public Offering				2,750,000
Price Of common Share		$ 11.45		$ 11.45
Net Proceeds After Origination Fees Interest Reserve And Closing Expense				$ 30,250,000
Underwriters common shares public offering				412,500

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Fair Value Measurements - Change in Fair Value for Financial Instruments (Detail) (Loan Securities Carried at Fair Value [Member], Significant Unobservable Inputs (Level 3) [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Loan Securities Carried at Fair Value [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value, Beginning balance	$ 11	$ 5,309
Net unrealized gain	215	447
Fair value, Ending balance	226	5,756
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at September 30, 2013 and 2012, respectively	$ 215	$ 447

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Investments in real estate, variable interest entities	$ 65,029	$ 21,423
Restricted cash held in escrows, variable interest entities	6,637	1,101
Allowances on accounts receivable	478	374
Lease intangibles, variable interest entities	20,059	3,485
Mortgage loans payable, variable interest entities	65,836	23,184
Notes payable, variable interest entities	864	876
Below market lease intangibles, variable interest entities	$ 605	$ 51
Series D Cumulative Redeemable Preferred Shares, liquidation preference	$ 25	$ 25
Series D Cumulative Redeemable Preferred Shares, shares authorized	5,060,000	5,060,000
Series D Cumulative Redeemable Preferred Shares, shares issued	4,820,000	4,820,000
Series D Cumulative Redeemable Preferred Shares, shares outstanding	4,820,000	4,820,000
Common Shares, par value	$ 1	$ 1
Common Shares, shares issued	36,397,949	33,018,711
Common Shares, shares outstanding	36,397,949	33,018,711

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Equity Investments

9 Months Ended

Sep. 30, 2013

Equity Method Investments And Joint Ventures [Abstract]

Equity Investments

7. Equity Investments

The Trust’s carrying amounts in its equity investments consist of the following at September 30, 2013 and December 31, 2012 (in thousands):

Venture Partner	Equity Investment	Nominal % Ownership at September 30, 2013			September 30, 2013		December 31, 2012
VHH LLC (1)	Vintage Housing Holding LLC		75.0	%	$	33,706	$	30,534
Elad Canada Inc.	WRT-Elad One South State Equity LP		50.0	%		—		460
Elad Canada Inc.	WRT-Elad One South State Lender LP		50.0	%		24,518		24,644
Mack-Cali	WRT-Stamford LLC		20.0	%		8,916		8,501
Atrium/Northstar	10 Metrotech Loan LLC		33.3	%		11		10,845
Atrium Holding	RE CDO Management LLC		50.0	%		993		1,779
Freed	Mentor Retail LLC		49.9	%		596		551
Inland	Concord Debt Holdings LLC		33.3	%		—		—
Inland	CDH CDO LLC		24.8	%		—		—
Inland (2)	Concord Debt Holdings LLC		33.3	%		982		3,974
Inland (2)	CDH CDO LLC		24.8	%		4,181		322
Sealy (1)	Northwest Atlanta Partners LP		60.0	%		7,741		8,104
Sealy (1)	Newmarket GP LLC		68.0	%		—		—
Sealy (1)	Airpark Nashville GP		50.0	%		—		—
Marc Realty (1)	Brooks Building LLC		50.0	%		8,076		7,983
Marc Realty (1)	High Point Plaza LLC		50.0	%		2,137		2,241
Marc Realty (1)	1701 Woodfield LLC		50.0	%		2,052		1,977
Marc Realty (1)	Enterprise Center LLC		50.0	%		2,440		2,679
Marc Realty (1)	Atrium Mall LLC		50.0	%		3,904		—
ROIC	WRT-ROIC Lakeside Eagle LLC		50.0	%		3		—
New Valley/Starwood	Socal Office Portfolio Loan LLC		73.0	%		—		8
New Valley/Witkoff	701 7th WRT Investors LLC		70.6	%		36,989		28,735
Fenway	WRT-Fenway Wateridge LLC		50.0	%		1,816		1,522
					$	139,061	$	134,859

(1) The Trust has determined that these equity investments are investments in VIEs. The Trust has determined that it is not the primary beneficiary of these VIEs since the Trust does not have the power to direct the activities that most significantly impact the economic performance of the VIEs.

(2) Represents the interests acquired from Lexington Realty Trust on May 1, 2012.

The following table reflects the activity of the Trust’s equity investments for the period ended September 30, 2013 (in thousands):

Investment	Balance at December 31, 2012		Contributions		Equity Income (loss)			Distributions			Sales Price			Balance at September 30, 2013
Vintage Housing Holding LLC (2)	$	30,534	$	—	$	7,142		$	(3,970	)	$	—		$	33,706
WRT-Elad One South State Equity LP (2)		460		1,013		(1,473	)		—			—			—
WRT-Elad One South State Lender LP (2)		24,644		—		2,988			(3,114	)		—			24,518
WRT-Stamford LLC		8,501		—		701			(286	)		—			8,916
10 Metrotech LLC		10,845		—		3,284			(14,118	)		—			11
RE CDO Management LLC		1,779		—		3,710			(4,496	)		—			993
Mentor Retail LLC		551		—		45			—			—			596
Concord Debt Holdings LLC		—		—		3,041			(3,041	)		—			—
CDH CDO LLC		—		—		415			(402	)		(13	)		—
701 7th WRT Investors LLC (3)		28,735		7,745		2,375			(1,866	)		—			36,989
WRT-Fenway Wateridge LLC (2)		1,522		161		133			—			—			1,816
CDH CDO LLC (1)		322		—		4,274			(402	)		(13	)		4,181
Sealy		8,104		—		(363	)		—			—			7,741
Marc Realty		14,880		—		(17	)		(158	)					14,705
Atrium Mall LLC		—		3,935		(31	)		—			—			3,904
WRT-ROIC Lakeside Eagle LLC		—		25		(22	)		—			—			3
SoCal Office Portfolio Loan LLC		8		—		(2	)		(6	)		—			—
Concord Debt Holdings LLC (1)		3,974		—		49			(3,041	)		—			982
Total	$	134,859	$	12,879	$	26,249		$	(34,900	)	$	(26	)	$	139,061

(1) Represents the interests acquired from Lexington Realty Trust on May 1, 2012.

(2) The Trust has elected to report its share of earnings from the investment on a one month lag period.

(3) The Trust has elected to report its share of earnings from the investment on a three month lag period.

The Trust has determined that the fair value of certain of its investments in the Marc Realty ventures and the Sealy Northwest Atlanta venture marginally exceed their carrying values. While the Sealy Northwest Atlanta venture continues to aggressively market available space for lease and work with existing tenants for lease renewal, which has resulted in an increase in occupancy from 70% at December 31, 2012 to 74% at September 30, 2013, declines in occupancy could cause impairment of this venture that could be material.

WRT-Elad - The Trust holds its mezzanine loan interest in Sullivan Center through WRT One South State Lender LP (“Lender LP”) and its profits participation interest through WRT-Elad One South State Equity LP (“Equity LP”). On February 18, 2013 a forbearance agreement was entered into whereby Lender LP agreed to forbear from exercising its rights under the loan documents with respect to the borrower’s failure to pay debt service for the period from December 2012 through October 2013. To the extent such debt service is not paid, debt service will accrue and be added to the outstanding principal balance of the mezzanine loan on each applicable monthly payment date. In exchange for the forbearance, Equity LP’s future interest in the property increased by 5% to 70%, with a corresponding decrease in the borrower’s general partner’s interest. In consideration for the forbearance the borrower is required to pay a $1,400,000 fee to Lender LP on or prior to November 9, 2013. If the $1,400,000 is not paid, in lieu of payment, then Equity LP’s indirect future interest in the property will increase by an additional 6% with a corresponding decrease to the general partner’s interest.

There is a basis differential of $10,465,000 between the Trust’s carrying value of its investments in Equity LP and the basis reflected at the joint venture level, which is amortized over the life of the related assets. The basis differential primarily relates to a bargain purchase gain recognized at the joint venture level upon acquisition.

Concord – On February 25, 2013 the Trust sold for $25,000 a 17% interest in the equity of CDH CDO LLC, exclusive of the interest in the entity that holds the collateral management agreement of CDH CDO, to Inland American. The sale of the interest was bifurcated between the Trust’s original interest and the interest acquired from Lexington Realty Trust with $12,500 of the sales price being allocated to each interest. The Trust recognized a gain of $12,500 on the sale of its original interest and a loss of $123,000 on the sale of its other interest. The sale of the interest did not affect the voting rights within CDH CDO LLC and did not result in a change in control. The Trust will continue to account for its investments in CDH CDO LLC under the equity method.

There is a basis differential on the Concord Debt Holdings and CDH CDO LLC interests acquired from Lexington of $5,440,000. This basis differential was a result of the purchase price exceeding the book basis at the venture level for the acquired interest.

RE CDO Management – On February 20, 2013 the venture sold its subordinated interests in Sorin CDO III for $2,750,000 and transferred the Sorin CDO III collateral management agreement for $0. On March 8, 2013 the venture sold its C Tranche subordinated interests in Sorin CDO IV for $6,240,000. As a result of the sales, the Trust received distributions of approximately $4,416,000 in the aggregate during the first quarter of 2013. The Trust’s share of the gain has been recorded as equity in earnings of this equity investment.

10 Metrotech Loan LLC – Equity Investment – On July 30, 2013 the $40,000,000 loan held by this venture was paid off at par. The venture, which had acquired the loan in August 2012 for $32,500,000, recognized $7,500,000 of discount accretion income in this current period in connection with the payoff at par. As a result of the payoff in July 2013, the Trust received a distribution from the venture of $13,333,000 and recorded equity income of $2,676,000 in connection with its 33.33% ownership interest in the venture. The venture level balance sheet consisted of total assets of $34,000 and $32,535,000 at September 30, 2013 and December 31, 2012, respectively and no liabilities at September 30, 2013 and December 31, 2012, respectively. The venture reported net income of $8,028,000 and $9,853,000 for the three and nine months ended September 30, 2013.

Sealy – On May 30, 2013 the Trust contributed its interest in Newmarket GP LLC and its interest in Airpark Nashville GP to WRT-TRS Management Corp its wholly owned taxable REIT subsidiary. The Trust’s carrying value of both investments was zero at the time of the contributions and the transaction had no effect on the financial statements of the Trust.

Atrium Mall LLC – Joint Venture Loan Acquisition – On June 20, 2013 the Trust, through a newly formed 50-50 joint venture with Marc Realty, acquired a non-performing $10,650,000 mortgage loan for $6,625,000. In addition, the joint venture paid $1,137,000 to fund escrows at the closing. The Trust invested a total of $3,935,000 in this joint venture during the quarter ended June 30, 2013. The loan was in maturity default at the time of acquisition.

On July 26, 2013 the joint venture entered into an agreement with the borrower pursuant to which the borrower conveyed the leasehold interest to the venture in lieu of foreclosure. Accordingly, the venture now holds the leasehold interest in the property.

The summarized balance sheets of the Trust’s Vintage Housing Holding LLC venture is as follows (in thousands):

	September 30, 2013		December 31, 2012
ASSETS
Real estate, net	$	360,851	$	340,666
Cash and cash equivalents		5,469		6,555
Restricted cash held in escrows		45,380		41,878
Receivables and other assets		19,964		26,681
Total Assets	$	431,664	$	415,780
LIABILITIES AND MEMBERS’ CAPITAL
Mortgage and notes payable	$	313,078	$	298,654
Other liabilities		47,443		53,687
Non-controlling interests		18,006		15,997
Members’ Capital		53,137		47,442
Total Liabilities and Members’ Capital	$	431,664	$	415,780
Carrying value of the Trust’s investment in Vintage Housing Holding	$	33,706	$	30,534

The summarized statements of operations of the Trust’s Vintage Housing Holding LLC venture is as follows (in thousands):

	For the Three Months Ended September 30, 2013		For the Three Months Ended September 30, 2012		For the Nine Months Ended September 30, 2013		For the Nine Months Ended September 30, 2012
Total revenue	$	11,048	$	10,328	$	32,451	$	30,928
Expenses
Operating		4,649		4,254		13,952		12,250
Real estate taxes		128		139		397		442
Interest		485		1,503		1,480		4,824
Depreciation and amortization		446		978		1,137		6,605
Other expenses		1,453		1,323		4,176		4,048
Total expenses		7,161		8,197		21,142		28,169
Net income		3,887		2,131		11,309		2,759
Loss attributable to non-controlling interests		676		29		1,399		791
Net income attributable to VHH	$	4,563	$	2,160	$	12,708	$	3,550
Trust’s share of net income	$	2,525	$	1,392	$	7,142	$	2,326

The Trust records its investments in Vintage Housing Holding LLC on a one month lag, therefore amounts in the Trust’s financial statements for the period ended September 30, 2013 are based on balances and results from Vintage Housing Holding LLC for the period ended August 31, 2013.

The summarized balance sheets of the Trust’s CDH CDO LLC venture are as follows (in thousands):

	September 30, 2013		December 31, 2012
ASSETS
Cash and cash equivalents	$	2,031	$	1,885
Real estate debt investments carried at fair value		183,110		185,060
Securities carried at fair value		80,463		95,994
Real estate, net		—		19,909
Interest and other receivables		1,066		1,030
Other assets		319		3,893
Total Assets	$	266,989	$	307,771
LIABILITIES AND MEMBERS’ CAPITAL
Collateralized debt obligation carried at fair value		153,361		191,345
Mortgage note payable		—		22,293
Interest rate swap liability		8,270		11,413
Other liabilities		2,727		5,423
Non-controlling interests		102		102
Members’ Capital		102,529		77,195
Total Liabilities and Members’ Capital	$	266,989	$	307,771
Carrying value of the Trust’s investments in CDH CDO LLC	$	4,181	$	322

The summarized statement of operations of the Trust’s CDH CDO LLC venture is as follows (in thousands):

	For the Three Months Ended September 30, 2013			For the Three Months Ended September 30, 2012			For the Nine Months Ended September 30, 2013			For the Nine Months Ended September 30, 2012
Interest, dividends and discount accretion	$	4,469		$	4,688		$	12,654		$	13,362
Expenses
Interest expense		1,598			1,651			4,791			5,012
Fees and expenses paid to related party		250			250			750			750
General and administrative		328			304			891			964
Total expenses		2,176			2,205			6,432			6,726
Net investment income:		2,293			2,483			6,222			6,636
Net property income		(55	)		(5	)		(205	)		(282	)
Loss on sale of real estate		(2,909	)		—			(2,909	)		—
Gain on extinguishment of debt		4,827			—			4,827			—
Realized gain (loss) from investments		13,367			1,716			13,361			(1,042	)
Unrealized gain (loss) from investments		391			620			5,886			7,436
Net income		17,914			4,814			27,182			12,748
Trust’s share of net income	$	3,367		$	855		$	4,274		$	1,333

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Consolidated Statements of Equity (USD $) In Thousands	Total	Preferred Shares of Beneficial Interest [Member]	Common Shares of Beneficial Interest [Member]	Additional Paid-In Capital [Member]	Accumulated Distributions in Excess of Net Income [Member]	Accumulated Other Comprehensive Income (loss) [Member]	Non-Controlling Interests [Member]
Beginning balance at Dec. 31, 2011	$ 408,836	$ 40,000	$ 33,041	$ 626,099	$ (311,246)	$ (92)	$ 21,034
Beginning balance, shares at Dec. 31, 2011		1,600	33,041
Net income attributable to Winthrop Realty Trust	26,719				26,719
Net loss attributable to non-controlling interests	(435)						(435)
Distributions to non-controlling interests	(6,115)						(6,115)
Contributions from non-controlling interests	4,340						4,340
Purchase of non-controlling interests	(6,250)			(5,695)			(555)
Dividends paid or accrued on Common Shares of Beneficial Interest ($0.4875 per share in 2013, 2012 respectively)	(16,119)				(16,119)
Dividends paid or accrued on Series D Preferred Shares ($1.7344 and $1.15625 per share for 2013 and 2012 respectively)	(6,498)				(6,498)
Net proceeds from Series D Preferred Share offering	77,572	80,500		(2,928)
Net proceeds from Series D Preferred Share offering, shares		3,220
Change in unrealized gain/loss on interest rate derivatives	(73)					(73)
Stock issued pursuant to Dividend Reinvestment Plan	397		36	361
Stock issued pursuant to Dividend Reinvestment Plan, shares			36
Ending balance at Sep. 30, 2012	482,374	120,500	33,077	617,837	(307,144)	(165)	18,269
Ending balance, shares at Sep. 30, 2012		4,820	33,077
Beginning balance at Dec. 31, 2012	469,264	120,500	33,019	618,426	(317,385)	(50)	14,754
Beginning balance, shares at Dec. 31, 2012		4,820	33,019
Net income attributable to Winthrop Realty Trust	33,848				33,848
Net loss attributable to non-controlling interests	(2,419)						(2,419)
Distributions to non-controlling interests	(52)						(52)
Contributions from non-controlling interests	861						861
Purchase of non-controlling interests	(150)			103			(253)
Dividends paid or accrued on Common Shares of Beneficial Interest ($0.4875 per share in 2013, 2012 respectively)	(16,553)				(16,553)
Dividends paid or accrued on Series D Preferred Shares ($1.7344 and $1.15625 per share for 2013 and 2012 respectively)	(8,360)				(8,360)
Dividends paid or accrued on restricted shares	(211)				(211)
Change in unrealized gain/loss on interest rate derivatives	(20)					(20)
Stock issued pursuant to Dividend Reinvestment Plan	353		29	324
Stock issued pursuant to Dividend Reinvestment Plan, shares			29
Net proceeds from common shares offering	29,960		2,750	27,210
Net proceeds from common shares offering, shares			2,750
Issuance of restricted shares, Value
Issuance of restricted shares	600		600
Amortization of restricted shares	557			557
Ending balance at Sep. 30, 2013	$ 507,078	$ 120,500	$ 35,798	$ 646,620	$ (308,661)	$ (70)	$ 12,891
Ending balance, shares at Sep. 30, 2013		4,820	36,398

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Securities Carried at Fair Value - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Fair Value Disclosures [Abstract]
Proceeds from sale of securities carried at fair value	$ 3,255,000	$ 0	$ 12,345,000	$ 4,614,000
Realized gain (loss) on sale of securities carried at fair value	(31,000)		(133,000)	41,000
Net unrealized gain on securities carried at fair value	$ 0	$ 3,484,000	$ 73,000	$ 7,701,000

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Investments in real estate, at cost
Land	$ 56,894	$ 43,252
Buildings and improvements	380,240	378,737
Investments in real estate, gross	437,134	421,989
Less: accumulated depreciation	(55,195)	(51,553)
Investments in real estate, net (variable interest entities $65,029 and $21,423, respectively)	381,939	370,436
Cash and cash equivalents	165,762	97,682
Restricted cash held in escrows (variable interest entities $6,637 and $1,101, respectively)	19,084	13,250
Loans receivable, net	108,163	211,250
Secured financing receivable	30,395
Accounts receivable, net of allowances of $478 and $374, respectively	997	1,418
Accrued rental income	19,205	17,241
Securities carried at fair value	7,074	19,694
Loan securities carried at fair value	226	11
Preferred equity investments	12,703	12,250
Equity investments	139,061	134,859
Lease intangibles, net (variable interest entities $20,059 and $3,485, respectively)	48,774	37,744
Deferred financing costs, net	4,546	4,864
Other assets	28,135	2,464
Assets held for sale	2,421
TOTAL ASSETS	968,485	923,163
LIABILITIES
Mortgage loans payable (variable interest entities $65,836 and $23,184, respectively)	308,049	280,576
Senior notes payable	86,250	86,250
Secured financings	29,150	52,920
Notes payable (variable interest entities $864 and $876, respectively)	1,664	1,676
Accounts payable, accrued liabilities and other liabilities	21,522	21,056
Related party fees payable	2,693	2,664
Dividends payable	8,804	5,366
Deferred income	995	1,136
Below market lease intangibles, net (variable interest entities $605 and $51, respectively)	2,280	2,255
TOTAL LIABILITIES	461,407	453,899
COMMITMENTS AND CONTINGENCIES
Winthrop Realty Trust Shareholders' Equity:
Series D Cumulative Redeemable Preferred Shares, $25 per share liquidation preference, 5,060,000 shares authorized and 4,820,000 shares both issued and outstanding at September 30, 2013 and December 31, 2012	120,500	120,500
Common Shares of Beneficial Interest, $1 par, unlimited shares authorized; 36,397,949 and 33,018,711 both issued and outstanding at September 30, 2013 and December 31, 2012, respectively	35,798	33,019
Additional paid-in capital	646,620	618,426
Accumulated distributions in excess of net income	(308,661)	(317,385)
Accumulated other comprehensive loss	(70)	(50)
Total Winthrop Realty Trust Shareholders' Equity	494,187	454,510
Non-controlling interests	12,891	14,754
Total Equity	507,078	469,264
TOTAL LIABILITIES AND EQUITY	$ 968,485	$ 923,163

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Receivables - Summary of Trust's Loans Receivable (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	$ 108,163,000	$ 211,250,000
Period of extension option exercised by the borrower	1 year
Renaissance Walk [Member] | Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	LIBOR + 12.0
Interest rate on mortgage loans	12.00%
Loans receivable, net	3,000,000	3,000,000
Contractual Maturity Date	Jan. 01, 2014
Hotel Wales [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	LIBOR + 4.0 %
Interest rate on mortgage loans	4.00%
Loans receivable, net	20,097,000	20,101,000
Contractual Maturity Date	Oct. 05, 2014
The Shops at Wailea [Member] | B Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	6.15
Interest rate on mortgage loans	6.15%
Loans receivable, net	6,037,000	5,376,000
Contractual Maturity Date	Oct. 06, 2014
Legacy Orchard [Member] | Corporate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	15.0
Interest rate on mortgage loans	15.00%
Loans receivable, net	9,750,000	9,750,000
Contractual Maturity Date	Oct. 31, 2014
Queensridge [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	LIBOR + 11.5 %
Interest rate on mortgage loans	11.50%
Loans receivable, net	8,214,000	39,170,000
Contractual Maturity Date	Nov. 15, 2014
San Marbeya [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	5.88
Interest rate on mortgage loans	5.88%
Loans receivable, net	27,686,000	27,149,000
Contractual Maturity Date	Jan. 01, 2015
Playa Vista [Member] | Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	LIBOR + 14.25 %
Interest rate on mortgage loans	14.25%
Loans receivable, net	10,323,000
Contractual Maturity Date	Jan. 23, 2015
Churchill [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	LIBOR + 3.75 %
Interest rate on mortgage loans	3.75%
Loans receivable, net	685,000	683,000
Contractual Maturity Date	Jun. 01, 2015
Rockwell [Member] | Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	12.0
Interest rate on mortgage loans	12.00%
Loans receivable, net	364,000	323,000
Contractual Maturity Date	May 01, 2016
500-512 7th Avenue [Member] | B Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	7.19
Interest rate on mortgage loans	7.19%
Loans receivable, net	10,029,000	10,009,000
Contractual Maturity Date	Jul. 11, 2016
Pinnacle II [Member] | B Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	6.31
Interest rate on mortgage loans	6.31%
Loans receivable, net	4,649,000	4,652,000
Contractual Maturity Date	Sep. 06, 2016
Poipu Shopping Village [Member] | B Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	6.62
Interest rate on mortgage loans	6.62%
Loans receivable, net	2,028,000	1,948,000
Contractual Maturity Date	Jan. 06, 2017
Wellington Tower [Member] | Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	6.79
Interest rate on mortgage loans	6.79%
Loans receivable, net	2,790,000	2,687,000
Contractual Maturity Date	Jul. 11, 2017
Mentor Building [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis	10.0
Interest rate on mortgage loans	10.00%
Loans receivable, net	2,511,000	2,512,000
Contractual Maturity Date	Sep. 10, 2017
1515 Market [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net		58,650,000
127 West 25th Street [Member] | Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis
Loans receivable, net		8,687,000
180 N. Michigan [Member] | Mezzanine [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis
Loans receivable, net		5,237,000
Fenway Shea [Member] | Whole Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis
Loans receivable, net		2,273,000
The Disney Building [Member] | B Note [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Stated Interest Rate, Variable Rate Basis
Loans receivable, net		$ 9,043,000

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Related-Party Transactions - Fees and Reimbursements Paid by the Trust (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	$ 2,725	$ 2,542	$ 8,142	$ 7,244
Base Asset Management [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	2,309	2,316	6,866	6,641
Property Management [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	304	193	895	506
Construction Management [Member]
Related Party Transaction [Line Items]
Fees and reimbursements paid by the Trust	$ 112	$ 33	$ 381	$ 97

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Non-controlling Interests - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended			1 Months Ended	3 Months Ended
	Jun. 01, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Westheimer [Member]	Mar. 29, 2012 Deer Valley Operating Property [Member]	Mar. 31, 2013 Houston, Texas Operating Property [Member]	Jun. 30, 2013 Subsidiary Company [Member]
Noncontrolling Interest [Line Items]
Percentage of non-controlling ownership interest	20.00%			32.00%	3.50%	1.00%	1.00%
Investment in equity investments	$ 5,850,000	$ 11,982,000	$ 47,925,000		$ 400,000	$ 75,000	$ 75,000
Purchase price accounting, carrying value of the acquired non-controlling interest	363,000				192,000	127,000	126,000
Purchase price accounting, adjustments in paid-in capital	$ 5,487,000				$ 208,000	$ 52,000	$ 51,000

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Receivables (Tables)

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Summary of Trust's Loans Receivable

The following table summarizes the Trust’s loans receivable at September 30, 2013 and December 31, 2012 (in thousands):

			Carrying Amount				Contractual Maturity Date
Description	Loan Position	Stated Interest Rate	September 30, 2013		December 31, 2012
Renaissance Walk	Mezzanine	LIBOR + 12.0% (2)	$	3,000	$	3,000	01/01/14
Hotel Wales	Whole Loan	LIBOR + 4.0% (3)		20,097		20,101	10/05/14 (4)
The Shops at Wailea	B-Note	6.15%		6,037		5,376	10/06/14
Legacy Orchard (1)	Corporate Loan	15.0%		9,750		9,750	10/31/14
Queensridge	Whole Loan	LIBOR + 11.5% (5)		8,214		39,170	11/15/14
San Marbeya	Whole Loan	5.88%		27,686		27,149	01/01/15
Playa Vista	Mezzanine	LIBOR + 14.25% (5)		10,323		—	01/23/15
Churchill (1)	Whole Loan	LIBOR + 3.75%		685		683	06/01/15
Rockwell	Mezzanine	12.0%		364		323	05/01/16
500-512 7th Ave	B-Note	7.19%		10,029		10,009	07/11/16
Pinnacle II	B-Note	6.31%		4,649		4,652	09/06/16
Poipu Shopping Village	B-Note	6.62%		2,028		1,948	01/06/17
Wellington Tower	Mezzanine	6.79%		2,790		2,687	07/11/17
Mentor Building	Whole Loan	10.0%		2,511		2,512	09/10/17
1515 Market	Whole Loan	(6)		—		58,650	(6)
127 West 25th Street	Mezzanine	—		—		8,687	(7)
180 N. Michigan	Mezzanine	—		—		5,237	(7)
Fenway Shea (1)	Whole Loan	—		—		2,273	(7)
The Disney Building	B-Note	—		—		9,043	(8)
			$	108,163	$	211,250

(1) The Trust determined that certain loans receivable are variable interests in VIEs primarily based on the fact that the underlying entities do not have sufficient equity at risk to permit the entity to finance its activities without additional subordinated financial support. The Trust does not have the power to direct the activities of the entity that most significantly impact the entity’s economic performance and is not required to consolidate the underlying entity.

(2) LIBOR floor of 2%.

(3) LIBOR floor of 3%.

(4) The borrower exercised their one year extension option during the third quarter of 2013.

(5) LIBOR floor of 0.5%.

(6) This loan was in maturity default at the time of acquisition. The loan was modified on February 1, 2013. The Trust consolidates the operations of the borrower entity and the loan receivable is eliminated in consolidation.

(7) The loans were satisfied at par during the nine months ended September 30, 2013.

(8) The loan was sold during the nine months ended September 30, 2013.

Activity Related to Loans Receivable

Activity related to loans receivable is as follows (in thousands):

	Nine Months Ended September 30, 2013
Balance at January 1, 2013	$	211,250
Purchase and advances		22,314
Interest (received) accrued, net		(453	)
Repayments/ Sale proceeds		(66,915	)
Elimination of 1515 Market in consolidation		(60,279	)
Loan discount accretion		2,283
Discount accretion received in cash		(37	)
Balance at September 30, 2013	$	108,163

Interest, Dividend and Discount Accretion Income

The following table summarizes the Trust’s interest, dividend and discount accretion income for the three and nine months ended September 30, 2013 and 2012 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Interest on loan assets	$	3,011	$	2,985	$	10,912	$	8,130
Accretion of loan discount		806		425		2,283		5,984
Interest and dividends on securities		100		312		350		904
Total interest, dividends, and discount accretion	$	3,917	$	3,722	$	13,545	$	15,018

Loans Receivable by Internal Credit Rating

The table below summarizes the Trust’s loans receivable by internal credit rating at September 30, 2013 and December 31, 2012 (in thousands, except for number of loans):

	September 30, 2013				December 31, 2012
Internal Credit Quality	Number of Loans		Carrying Value of Loans Receivable		Number of Loans		Carrying Value of Loans Receivable
Greater than zero		13	$	97,840		18	$	211,250
Equal to zero		1		10,323		—		—
Less than zero		—		—		—		—
		14	$	108,163		18	$	211,250

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Reportable Segments

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Reportable Segments

17. Reportable Segments

The Financial Accounting Standards Board (“FASB”) guidance on segment reporting establishes standards for the way that public business enterprises report information about operating segments in financial statements and requires that those enterprises report selected financial information about operating segments in interim financial reports issued to shareholders. Based on the Trust’s method of internal reporting, management determined that it has three operating segments: (i) the ownership of operating properties; (ii) the origination and acquisition of loans and debt securities secured directly or indirectly by commercial and multi-family real property – collectively, loan assets; and (iii) the ownership of equity and debt securities in other REITs – REIT securities.

The operating properties segment includes all of the Trust’s wholly and partially owned operating properties. The loan assets segment includes all of the Trust’s activities related to real estate loans including loans receivable, loan securities and equity investments in loan related entities. The REIT securities segment includes all of the Trust’s activities related to the ownership of securities in other publicly traded real estate companies. In addition to its three business segments, the Trust reports non-segment specific income and expense under corporate income (expense).

The following table summarizes the Trust’s assets by business segment for the periods ended September 30, 2013 and December 31, 2012 (in thousands):

	September 30, 2013		December 31, 2012
Assets
Operating properties	$	630,666	$	562,822
Loan assets		154,265		239,534
REIT securities		7,074		19,694
Corporate
Cash and cash equivalents		165,762		97,682
Restricted cash		7,387		—
Accounts receivable and prepaids		574		336
Deferred financing costs		2,757		3,095
Total Assets	$	968,485	$	923,163
Capital Expenditures
Operating Properties	$	2,835	$	12,417

The Trust and its management assess and measure segment operating results and allocate resources based on a performance measure referred to as operating income. Operating income for each segment is presented as all items of income and expense directly derived from or incurred by each business segment before depreciation, amortization and interest expense. Interest on cash reserves, general and administrative expenses and other non-segment specific income and expense items are reported under corporate income (expense).

The following table presents a summary of revenues from operating properties, loan assets and REIT securities and expenses incurred by each segment for the three and nine months ended September 30, 2013 and 2012 (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30,			September 30,			September 30,			September 30,
	2013			2012			2013			2012
Operating Properties
Rents and reimbursements	$	15,099		$	12,224		$	45,026		$	35,022
Operating expenses		(5,272	)		(3,335	)		(14,697	)		(10,643	)
Real estate taxes		(1,705	)		(1,160	)		(4,184	)		(3,116	)
Equity in earnings of preferred equity investment in Fenway-Wateridge		189			—			576			—
Equity in loss of Sealy Northwest Atlanta		(130	)		(109	)		(363	)		(273	)
Equity in loss of Sealy Newmarket		—			(704	)		—			(2,171	)
Equity in income (loss) of Marc Realty investment		(26	)		377			(17	)		33
Equity in income (loss) of WRT-Elad		905			(57	)		1,515			458
Equity in income of Vintage		2,525			1,392			7,142			2,326
Equity in income of 701 Seventh Avenue		1,055			—			2,375			—
Equity in income of Fenway-Wateridge		50			—			133			—
Equity in income of Mentor		12			12			45			18
Equity in loss of Atrium Mall		(31	)		—			(31	)		—
Equity in income of F-II Co-invest		—			—			—			232
Operating properties operating income		12,671			8,640			37,520			21,886
Depreciation and amortization expense		(4,923	)		(4,416	)		(14,703	)		(11,623	)
Interest expense		(3,272	)		(3,126	)		(11,131	)		(9,230	)
Settlement expense		(16	)		—			(150	)		—
Operating properties net income		4,460			1,098			11,536			1,033
Loan Assets
Interest income		3,011			2,985			10,912			8,130
Discount accretion		806			425			2,283			5,984
Unrealized gain on loan securities carried at fair value		—			371			215			447
Equity in income of ROIC Riverside		—			238			—			706
Equity in loss of ROIC Lakeside Eagle		(7	)		(16	)		(22	)		(32	)
Equity in income of Concord Debt Holdings		2,970			35			3,041			386
Equity in income of CDH CDO		265			136			415			670
Equity in income of Concord Debt Holdings (1)		20			2			49			30
Equity in income of CDH CDO (1)		3,367			855			4,274			1,333
Equity in income of WRT-Stamford		256			232			701			548
Equity in income (loss) of SoCal Office Loan Portfolio		—			10,348			(2	)		9,710
Equity in (loss) income of RE CDO Management		(51	)		18			3,710			46
Equity in income of 10 Metrotech		2,676			50			3,284			31
Loan assets operating income		13,313			15,679			28,860			27,989
General and administrative expense		(2	)		(15	)		(37	)		(40	)
Interest expense		(335	)		(336	)		(1,562	)		(1,004	)
Loan assets net income		12,976			15,328			27,261			26,945
REIT Securities
Interest and dividends		100			312			350			904
(Loss) gain on sale of securities carried at fair value		(31	)		—			(133	)		41
Unrealized gain (loss) on securities carried at fair value		—			3,113			(142	)		7,254
REIT securities net income		69			3,425			75			8,199
Net income from segments before corporate income (expense)		17,505			19,851			38,872			36,177
Reconciliations to GAAP Net Income:
Corporate Income (Expense)
Interest income		101			242			286			433
Interest expense		(1,828	)		(954	)		(5,482	)		(1,326	)
General and administrative		(1,111	)		(767	)		(3,021	)		(2,407	)
Related party fees		(2,309	)		(2,316	)		(6,866	)		(6,641	)
Transaction costs		(106	)		(30	)		(158	)		(335	)
State and local taxes		(85	)		(64	)		(227	)		(211	)
Income from continuing operations		12,167			15,962			23,404			25,690
(Loss) income from discontinued operations attributable to Winthrop Realty Trust		(1,434	)		85			8,025			594
Net income		10,733			16,047			31,429			26,284
Net loss (income) attributable to non-controlling interest		995			(939	)		2,419			435
Net Income Attributable to Winthrop Realty Trust	$	11,728		$	15,108		$	33,848		$	26,719

(1) Represents the interest acquired from Lexington Realty Trust on May 1, 2012.

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Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Transfers between Level 1 and Level 2 fair value assets	$ 0		$ 0	$ 0	$ 0
Transfers between Level 1 and Level 2 fair value liabilities	0		0	0	0
Loan securities carried at fair value	226,000			226,000		11,000
Loan security face value				20.00%
Property impairment charges	2,750,000	154,000	698,000	2,904,000	698,000
Net unrealized gains	$ 0		$ 3,484,000	$ 73,000	$ 7,701,000

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Discontinued Operations - Results for Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Discontinued Operations And Disposal Groups [Abstract]
Revenues	$ 10		$ 1,263	$ 1,598	$ 4,261
Termination fee income			592		592
Operating expenses	(94)		(675)	(1,028)	(2,016)
Interest expense			(685)		(842)
Depreciation and amortization	(21)		(657)	(589)	(1,648)
Gain on sale of assets	1,421		945	10,948	945
Impairment loss	(2,750)	(154)	(698)	(2,904)	(698)
(Loss) income from discontinued operations	$ (1,434)		$ 85	$ 8,025	$ 594

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Receivables - Activity Related to Loans Receivable (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Receivables [Abstract]
Balance at January 1, 2013			$ 211,250
Purchase and advances			22,314
Interest (received) accrued, net			(453)
Repayments/ Sale proceeds			(66,915)
Elimination of 1515 Market in consolidation			(60,279)
Loan discount accretion	806	425	2,283	5,984
Discount accretion received in cash			(37)	(14,065)
Balance at September 30, 2013	$ 108,163		$ 108,163

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Debt - Additional Information (Detail) (USD $)	9 Months Ended		1 Months Ended		9 Months Ended	1 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Oct. 31, 2012 5400 Westminster LP [Member]	Jul. 26, 2013 Amherst, NY [Member]	Sep. 30, 2013 Note B [Member] Cerritos, CA [Member]	Oct. 31, 2012 Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Outstanding mortgage loans payable	$ 308,049,000	$ 280,576,000
Outstanding mortgage loan				14,943,000
Mortgage loan maturity date	2013-10
Note Issued					14,500,000	1,600,000
Interest Rate of B Note					6.6996%	15.00%
Amount payable on notes for interest accruing					12,000
Percentage on return on capital					9.00%
Outstanding balance of loan					864,000	800,000
Maturity period of the assumed debt	Aug. 15, 2022					Oct. 15, 2022
Percentage of trust holds loan			50.00%
Eliminated amount of note						$ 800,000

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Organization - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013 Category
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Percentage of limited partnership interest in operating partnership	100.00%
Number of specific areas of real estate related assets	3

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Discontinued Operations (Tables)

9 Months Ended

Sep. 30, 2013

Discontinued Operations And Disposal Groups [Abstract]

Results for Discontinued Operations

Results for discontinued operations for the three and nine months ended September 30, 2013 and 2012 are as follows (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30, 2013			September 30, 2012			September 30, 2013			September 30, 2012
Revenues	$	10		$	1,263		$	1,598		$	4,261
Termination fee income		—			592			—			592
Operating expenses		(94	)		(675	)		(1,028	)		(2,016	)
Interest expense		—			(685	)		—			(842	)
Depreciation and amortization		(21	)		(657	)		(589	)		(1,648	)
Gain on sale of assets		1,421			945			10,948			945
Impairment loss		(2,750	)		(698	)		(2,904	)		(698	)
(Loss) income from discontinued operations	$	(1,434	)	$	85		$	8,025		$	594

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Related-Party Transactions (Tables)

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Fees and Reimbursements Paid by the Trust

The following table sets forth the fees and reimbursements paid by the Trust for the three and nine months ended September 30, 2013 and 2012 to FUR Advisors and Winthrop Management L.P. (“Winthrop Management”) (in thousands):

	For the Three Months Ended				For the Nine Months Ended
	September 30, 2013		September 30, 2012		September 30, 2013		September 30, 2012
Base Asset Management	$	2,309	$	2,316	$	6,866	$	6,641
Property Management		304		193		895		506
Construction Management		112		33		381		97
	$	2,725	$	2,542	$	8,142	$	7,244

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Securities Carried at Fair Value

9 Months Ended

Sep. 30, 2013

Text Block [Abstract]

Securities Carried at Fair Value

6. Securities Carried at Fair Value

Securities carried at fair value are summarized in the table below (in thousands):

	September 30, 2013				December 31, 2012
	Cost		Fair Value		Cost		Fair Value
REIT Common shares	$	6,318	$	7,074	$	15,876	$	19,694
Loan securities		161		226		161		11
	$	6,479	$	7,300	$	16,037	$	19,705

During the three and nine months ended September 30, 2013, securities carried at fair value were sold for total proceeds of approximately $3,255,000 and $12,345,000, respectively. The Trust recorded a loss on these sales of approximately $31,000 and $133,000, respectively, in the three and nine months ended September 30, 2013.

No securities carried at fair value were sold during the three months ended September 30, 2012. During the nine months ended September 30, 2012, securities carried at fair value were sold for total proceeds of approximately $4,614,000. The Trust recorded a gain on these sales of approximately $41,000 in the nine months ended September 30, 2012.

For purpose of determining gains or losses, the cost of securities is based on specific identification. For the three months ended September 30, 2013 and 2012, the Trust recognized net unrealized losses on securities carried at fair value and loan securities carried at fair value of $0 and $3,484,000, respectively as the result of the change in fair value of the financial assets for which the fair value option was elected. For the nine months ended September 30, 2013 and 2012, the Trust recognized net unrealized gains on securities carried at fair value and loan securities carried at fair value of $73,000, and $7,701,000, respectively.

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Equity Investments - Additional Information (Detail) (USD $)	9 Months Ended		12 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended			1 Months Ended	3 Months Ended	9 Months Ended				3 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended		1 Months Ended		3 Months Ended		9 Months Ended		1 Months Ended		3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Jun. 20, 2013 Atrium Property [Member]	Jun. 30, 2013 Atrium Property [Member]	Sep. 30, 2013 Atrium Property [Member]	May 30, 2013 Sealy [Member]	Sep. 30, 2013 Concord Debt Holdings (1) [Member]	Aug. 31, 2012 10 Metrotech [Member]	Sep. 30, 2013 10 Metrotech [Member]	Sep. 30, 2013 10 Metrotech [Member]	Jul. 30, 2013 10 Metrotech [Member]	Dec. 31, 2012 10 Metrotech [Member]	Sep. 30, 2013 WRT Elad [Member]	Sep. 30, 2013 Vintage Housing Holding LLC [Member]	Sep. 30, 2012 Vintage Housing Holding LLC [Member]	Sep. 30, 2013 Vintage Housing Holding LLC [Member]	Sep. 30, 2012 Vintage Housing Holding LLC [Member]	Feb. 18, 2013 WRT-Elad One South State Equity LP [Member]	Sep. 30, 2013 WRT-Elad One South State Equity LP [Member]	Feb. 25, 2013 Concord Debt Holdings LLC [Member]	Feb. 25, 2013 Lex-Win [Member]	Feb. 25, 2013 CDH CDO LLC [Member]	Sep. 30, 2013 CDH CDO LLC [Member]	Sep. 30, 2012 CDH CDO LLC [Member]	Sep. 30, 2013 CDH CDO LLC [Member]	Sep. 30, 2012 CDH CDO LLC [Member]	Mar. 08, 2013 RE CDO Management LLC [Member]	Feb. 20, 2013 RE CDO Management LLC [Member]	Mar. 31, 2013 RE CDO Management LLC [Member]
Schedule of Equity Method Investments [Line Items]
Increase in occupancy of lease renewal	74.00%		70.00%
Future interest																			5.00%
Future interest																			70.00%
Fee to be paid by the borrower																			$ 1,400,000
Additional increase in indirect future interest																			6.00%
Interests acquired								5,440,000						10,465,000
Nominal % Ownership									33.33%												17.00%
Acquisition Price																						25,000
sales price of the trust																							12,500
Gain on sale of interest																							12,500
Loss on sale of interest																							123,000
Sale of subordinated interests																												6,240,000	2,750,000
Transfer of collateral management agreement																													0
Aggregate amount received from sales																												4,416,000		4,416,000
Loan held by this venture												40,000,000
Acquisition of loan									32,500,000
Discount accretion income	37,000	14,065,000							7,500,000
Equity income Distribution	19,354,000	17,097,000							13,333,000
Equity income recorded									2,676,000
Metrotech's net income										8,028,000	9,853,000				4,563,000	2,160,000	12,708,000	3,550,000						17,914,000	4,814,000	27,182,000	12,748,000
Metrotech's total assets										34,000	34,000		32,535,000
Metrotech's total liabilities										0	0		0
Carrying value of investment	381,939,000		370,436,000				0
Amount of nor-performing mortage loan acquired				10,650,000		10,650,000
Non-performing mortgage loan acquisition cost	21,437,000	64,970,000		6,625,000		6,625,000
Joint venture paid				1,137,000		1,137,000
Investment by trust					$ 3,935,000
Investment lag Period																	1 month			1 month

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Subsequent Events - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended				1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended	1 Months Ended		9 Months Ended	1 Months Ended
	Jun. 01, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Oct. 07, 2013 Subsequent Event [Member] Sealy Airpark Nashville Foreclosure [Member]	Oct. 15, 2013 Subsequent Event [Member] Wrt Fenway Wateridge Mortgage Loan [Member]	Sep. 30, 2013 Subsequent Event [Member] Wrt Fenway Wateridge Mortgage Loan [Member]	Oct. 18, 2013 Subsequent Event [Member] Wrt Elad Equity Mortgage Loan Refinancing [Member]	Sep. 30, 2013 Subsequent Event [Member] Wrt Elad Equity Mortgage Loan Refinancing [Member]	Oct. 25, 2013 Subsequent Event [Member] Summit Pointe Apartments Equity Investment [Member] Apartment	Oct. 31, 2013 Subsequent Event [Member] Luxury Residential Property Acquisition [Member] Apartment	Sep. 30, 2013 Subsequent Event [Member] Luxury Residential Property Acquisition [Member]	Nov. 06, 2013 Subsequent Event [Member] New Valley LLC [Member]	Oct. 15, 2013 Minimum [Member] Subsequent Event [Member] Wrt Fenway Wateridge Mortgage Loan [Member]	Oct. 25, 2013 Minimum [Member] Subsequent Event [Member] Summit Pointe Apartments Equity Investment [Member]
Subsequent Event [Line Items]
Investment carried for financial purposes		$ 139,061,000		$ 134,859,000	$ 0
First Mortgage loan						7,000,000		113,500,000
Loan bears interest ,description of variable rate basis		LIBOR plus 3%				greater of 6%, or LIBOR plus 4.5%
Mortgage Loan Interest Rate								11.00%						6.00%
LIBOR plus						4.50%					2.00%
Maturity date of loan							Nov. 01, 2016		Nov. 06, 2018			Oct. 31, 2016
Interest rate cap, LIBOR						2.50%
Distribution received						6,255,000
Nominal % Ownership						50.00%				80.00%
Interest rate , loan bears								3.95%		5.70%
Existing Mortgage Loan Carrying Amount								110,550,000		9,248,000
Trust Contribution	5,850,000	11,982,000	47,925,000							4,933,000
Garden apartment units acquired										184	4
Purchase Price Of Property										14,500,000	246,000,000
Preferred return from cash flow										8.00%
Minimum IRR															12.00%
First mortgage loan											150,000,000
Contribution for interest acquired in joint properties													$ 16,350,000
Percentage of interest in properties													16.00%
Right to acquire interest in joint properties percentage													50.00%

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Securities Carried at Fair Value (Tables)

9 Months Ended

Sep. 30, 2013

Text Block [Abstract]

Securities Carried at Fair Value

Securities carried at fair value are summarized in the table below (in thousands):

	September 30, 2013				December 31, 2012
	Cost		Fair Value		Cost		Fair Value
REIT Common shares	$	6,318	$	7,074	$	15,876	$	19,694
Loan securities		161		226		161		11
	$	6,479	$	7,300	$	16,037	$	19,705

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Summary of Significant Accounting Policies - Reconciliation of Earnings Attributable to Common Shares Outstanding for the Basic and Diluted EPS (Parenthetical) (Detail) (Maximum [Member]) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Maximum [Member]
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Weighted-average stock options	1,000

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Revolving Line of Credit

9 Months Ended

Sep. 30, 2013

Revolving Line of Credit

9. Revolving Line of Credit

The Trust has a revolving line of credit in the principal amount of $50,000,000 which bears interest at LIBOR plus 3% and has a maturity date of March 3, 2014 with an option to extend the maturity date to March 3, 2015. The Trust must comply with financial covenants on an ongoing basis. The covenants are tested as of the end of each quarter based upon results for that quarter. The Trust was in compliance of its financial covenants under its revolving line of credit as of September 30, 2013.

The revolving line of credit is collateralized by certain approved assets and since it is recourse to the Trust it is effectively collateralized by all of the Trust’s assets. The revolving line of credit requires monthly payments of interest only. To the extent that the amounts outstanding under the facility are in excess of the borrowing base (as calculated per the terms of the loan agreement), the Trust is required to make a principal payment to reduce such excess. The Trust may prepay from time to time without premium or penalty and re-borrow amounts prepaid.

The outstanding balance under the facility was $0 at September 30, 2013 and December 31, 2012. The Trust is required to pay a commitment fee on the unused portion of the line, which amounted to approximately $44,000 and $131,000, respectively, for the three and nine months ended September 30, 2013, and approximately $44,000 and $106,000 for the three and nine months ended September 30, 2012, respectively.

Senior Notes [Member]

Revolving Line of Credit

10. Senior Notes Payable

In August 2012 the Trust issued a total $86,250,000 of its 7.75% Senior Notes (the “Senior Notes”) at an issue price of 100% of par value. The Trust received net proceeds of approximately $83,228,000, after deducting the underwriting discounts, commissions and offering expenses.

The Senior Notes mature on August 15, 2022 and bear interest at the rate of 7.75% per year, payable quarterly in arrears commencing November 15, 2012. The Trust may redeem the Senior Notes, in whole or in part, at any time or from time to time on or after August 15, 2015 at a redemption price in cash equal to 100% of the principal amount redeemed plus accrued and unpaid interest.

The Senior Notes rank senior to all of the Trust’s future indebtedness that by its terms is expressly subordinate to the Senior Notes, effectively making the Senior Notes senior to all of the Trust’s existing and future unsecured senior indebtedness to the extent of the collateral securing the Senior Notes and pari passu thereafter. The Senior Notes are structurally subordinated to all of the existing and future liabilities of Winthrop’s subsidiaries, including the Operating Partnership, but will have a security interest in the promissory note of the Operating Partnership to the Trust, which promissory note is pari passu with all existing and future unsecured senior indebtedness of the Operating Partnership.

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Derivative Financial Instruments - Interest Rate Derivatives Designated and Non Designated (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative [Line Items]
Unrealized (Loss) Gain on Hedge in Other Comprehensive Income	$ (150)	$ (16)	$ (20)	$ (73)
Cash Flow Hedging [Member] | Interest Rate Caps [Member] | 0.5% Strike Rate Derivatives [Member]
Derivative [Line Items]
Derivative Maturity Period			Aug 2014	Aug 2014
Strike Rate	0.50%	0.50%	0.50%	0.50%
Notional Amount of Hedge	13,197	13,478	13,197	13,478
Cost of Hedge			22	22
Estimated Fair Value			1
Unrealized (Loss) Gain on Hedge in Other Comprehensive Income
Change in Hedge Valuations Included in Other Comprehensive Income	(3)		(4)
Cash Flow Hedging [Member] | Interest Rate Cap One [Member] | 0.5% Strike Rate Derivatives [Member]
Derivative [Line Items]
Derivative Maturity Period			May 2016	Oct 2014
Strike Rate	0.50%	1.00%	0.50%	1.00%
Notional Amount of Hedge	42,922	21,000	42,922	21,000
Cost of Hedge				174
Estimated Fair Value			(15)	(165)
Unrealized (Loss) Gain on Hedge in Other Comprehensive Income			(15)
Change in Hedge Valuations Included in Other Comprehensive Income	(147)	(17)	(15)	(77)
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member] | 1.25% Strike Rate Derivatives [Member]
Derivative [Line Items]
Derivative Maturity Period			May 2013	May 2013
Strike Rate	1.25%	1.25%	1.25%	1.25%
Notional Amount of Hedge		51,982		51,982
Cost of Hedge			196	196
Estimated Fair Value
Change in Cap Valuations Included in Interest Expense				18
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member] | 1.75% Strike Rate Derivatives [Member]
Derivative [Line Items]
Derivative Maturity Period			May 2014	May 2014
Strike Rate	1.75%	1.75%	1.75%	1.75%
Notional Amount of Hedge	51,982	51,982	51,982	51,982
Cost of Hedge			434	434
Estimated Fair Value				1
Change in Cap Valuations Included in Interest Expense		5		46
Not Designated as Hedging Instrument [Member] | Interest Rate Caps [Member] | 1.00% Strike Rate Derivatives [Member]
Derivative [Line Items]
Derivative Maturity Period			Oct 2014	Oct 2014
Strike Rate	1.00%	1.00%	1.00%	1.00%
Notional Amount of Hedge	5,753	21,000	5,753	21,000
Cost of Hedge			174	174
Estimated Fair Value				9
Change in Cap Valuations Included in Interest Expense	$ 1		$ 1

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Receivables

9 Months Ended

Sep. 30, 2013

Receivables [Abstract]

Receivables

5. Receivables

Loans Receivable

The following table summarizes the Trust’s loans receivable at September 30, 2013 and December 31, 2012 (in thousands):

			Carrying Amount				Contractual Maturity Date
Description	Loan Position	Stated Interest Rate	September 30, 2013		December 31, 2012
Renaissance Walk	Mezzanine	LIBOR + 12.0% (2)	$	3,000	$	3,000	01/01/14
Hotel Wales	Whole Loan	LIBOR + 4.0% (3)		20,097		20,101	10/05/14 (4)
The Shops at Wailea	B-Note	6.15%		6,037		5,376	10/06/14
Legacy Orchard (1)	Corporate Loan	15.0%		9,750		9,750	10/31/14
Queensridge	Whole Loan	LIBOR + 11.5% (5)		8,214		39,170	11/15/14
San Marbeya	Whole Loan	5.88%		27,686		27,149	01/01/15
Playa Vista	Mezzanine	LIBOR + 14.25% (5)		10,323		—	01/23/15
Churchill (1)	Whole Loan	LIBOR + 3.75%		685		683	06/01/15
Rockwell	Mezzanine	12.0%		364		323	05/01/16
500-512 7th Ave	B-Note	7.19%		10,029		10,009	07/11/16
Pinnacle II	B-Note	6.31%		4,649		4,652	09/06/16
Poipu Shopping Village	B-Note	6.62%		2,028		1,948	01/06/17
Wellington Tower	Mezzanine	6.79%		2,790		2,687	07/11/17
Mentor Building	Whole Loan	10.0%		2,511		2,512	09/10/17
1515 Market	Whole Loan	(6)		—		58,650	(6)
127 West 25th Street	Mezzanine	—		—		8,687	(7)
180 N. Michigan	Mezzanine	—		—		5,237	(7)
Fenway Shea (1)	Whole Loan	—		—		2,273	(7)
The Disney Building	B-Note	—		—		9,043	(8)
			$	108,163	$	211,250

(1) The Trust determined that certain loans receivable are variable interests in VIEs primarily based on the fact that the underlying entities do not have sufficient equity at risk to permit the entity to finance its activities without additional subordinated financial support. The Trust does not have the power to direct the activities of the entity that most significantly impact the entity’s economic performance and is not required to consolidate the underlying entity.

(2) LIBOR floor of 2%.

(3) LIBOR floor of 3%.

(4) The borrower exercised their one year extension option during the third quarter of 2013.

(5) LIBOR floor of 0.5%.

(6) This loan was in maturity default at the time of acquisition. The loan was modified on February 1, 2013. The Trust consolidates the operations of the borrower entity and the loan receivable is eliminated in consolidation.

(7) The loans were satisfied at par during the nine months ended September 30, 2013.

(8) The loan was sold during the nine months ended September 30, 2013.

The carrying amount of loans receivable includes accrued interest of $563,000 and $1,016,000 at September 30, 2013 and December 31, 2012, respectively, and cumulative accretion of $4,773,000 and $2,527,000 at September 30, 2013 and December 31, 2012, respectively.

At September 30, 2013 and December 31, 2012, the Trust’s loans receivable have unamortized discount totaling $7,620,000 and $9,865,000, respectively.

The weighted average coupon as calculated on the par value of the Trust’s loans receivable was 6.90% and 7.65% and the weighted average yield to maturity as calculated on the carrying value of the Trust’s loan receivable was 11.88% and 11.43% at September 30, 2013 and December 31, 2012, respectively.

The San Marbeya, Hotel Wales and Queensridge loans receivable are part of secured financing transactions, with recourse and non-recourse financings at September 30, 2013. The Trust had outstanding non-recourse secured financings related to the San Marbeya and Hotel Wales loans receivable in the amount of $29,150,000 at September 30, 2013 and December 31, 2012. The Trust had recourse secured financings related to the Queensridge loan receivable in the amount of $23,770,000 at December 31, 2012. As of September 30, 2013 the Trust has fully repaid the recourse secured financing related to the Queensridge loan receivable. No other loans receivable are part of secured financing transactions at September 30, 2013. See Note 8 for additional disclosures regarding the Trust’s secured financings.

Loan Receivable Activity

Activity related to loans receivable is as follows (in thousands):

	Nine Months Ended September 30, 2013
Balance at January 1, 2013	$	211,250
Purchase and advances		22,314
Interest (received) accrued, net		(453	)
Repayments/ Sale proceeds		(66,915	)
Elimination of 1515 Market in consolidation		(60,279	)
Loan discount accretion		2,283
Discount accretion received in cash		(37	)
Balance at September 30, 2013	$	108,163

The following table summarizes the Trust’s interest, dividend and discount accretion income for the three and nine months ended September 30, 2013 and 2012 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Interest on loan assets	$	3,011	$	2,985	$	10,912	$	8,130
Accretion of loan discount		806		425		2,283		5,984
Interest and dividends on securities		100		312		350		904
Total interest, dividends, and discount accretion	$	3,917	$	3,722	$	13,545	$	15,018

Credit Quality of Loans Receivable and Loan Losses

The Trust evaluates impairment on its loan portfolio on an individual basis and has developed a loan grading system for all of its outstanding loans that are collateralized directly or indirectly by real estate. Grading categories include debt yield, debt service coverage ratio, length of loan, property type, loan type, and other more subjective variables that include property or collateral location, market conditions, industry conditions, and sponsor’s financial stability. Management reviews each category and assigns an overall numeric grade for each loan to determine the loan’s risk of loss and to provide a determination as to whether an individual loan is impaired and whether a specific loan loss allowance is necessary. A loan’s grade of credit quality is determined quarterly.

All loans with a positive score do not require a loan loss allowance. Any loan graded with a neutral score or “zero” is subject to further review of the collectability of the interest and principal based on current conditions and qualitative factors to determine if impairment is warranted. Any loan with a negative score is deemed impaired and management then would measure the specific impairment of each loan separately using the fair value of the collateral less costs to sell.

Management estimates the loan loss allowance by calculating the estimated fair value less costs to sell of the underlying collateral securing the loan based on the fair value of underlying collateral and comparing the fair value to the loan’s net carrying value. If the fair value is less than the net carrying value of the loan, an allowance is created with a corresponding charge to the provision for loan losses. The allowance for each loan will be maintained at a level the Trust believes will be adequate to absorb losses.

The table below summarizes the Trust’s loans receivable by internal credit rating at September 30, 2013 and December 31, 2012 (in thousands, except for number of loans):

	September 30, 2013				December 31, 2012
Internal Credit Quality	Number of Loans		Carrying Value of Loans Receivable		Number of Loans		Carrying Value of Loans Receivable
Greater than zero		13	$	97,840		18	$	211,250
Equal to zero		1		10,323		—		—
Less than zero		—		—		—		—
		14	$	108,163		18	$	211,250

Non-Performing Loans

The Trust considers a loan to be non-performing and places loans on non-accrual status at such time as management determines it is probable that it will be unable to collect all amounts due according to the contractual terms of the loan. While on non-accrual status, based on the Trust’s judgment as to collectability of principal, loans are either accounted for on a cash basis, where interest income is recognized only upon actual receipt of cash, or on a cost-recovery basis, where all cash receipts reduce a loan’s carrying value. If and when a loan is brought back into compliance with its contractual terms, the Trust will resume accrual of interest. As of September 30, 2013 and December 31, 2012, there were no non-performing loans and no past due payments. The Trust did not record any provision for loan loss for the three and nine months ended September 30, 2013.

Secured Financing Receivable

In August 2013 the Trust closed on an agreement to acquire Elad’s 50% interest in the Lender LP joint venture for $30,000,000. In connection with the transaction, the Trust entered into an option agreement with Elad granting Elad the right, but not obligation, to repurchase their interest in the venture. The option agreement provides Elad, as the transferor, the option to unilaterally cause the return of the asset at the earlier of two years from August 21, 2013 or an event of default on Lender LP’s mezzanine debt. As such, Elad is able to retain control of its interest in Lender LP for financial reporting purposes as the exercise of the option is unconditional other than for the passage of time. As a result, for financial reporting purposes, the transfer of the financial asset is accounted for as a secured financing rather than an acquisition. The $30,000,000 acquisition price is recorded as a secured financing receivable. The Trust will recognize interest income on the secured financing receivable on an accrual basis in accordance with GAAP, at an annual interest rate of 15%. The Trust recorded $395,000 of interest income during the three and nine months ended September 30, 2013.

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net income	$ 31,429	$ 26,284
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of deferred financing costs)	10,355	8,552
Amortization of lease intangibles	5,901	5,028
Straight-line rental income	(3,584)	(2,662)
Loan discount accretion	(2,283)	(5,984)
Discount accretion received in cash	37	14,065
Income from preferred equity investments	(576)
Distributions of income from preferred equity investments	123	97
Income of equity investments	(26,249)	(14,051)
Distributions of income from equity investments	19,354	17,097
Restricted cash held in escrows	1,763	(4,063)
Loss (gain) on sale of securities carried at fair value	133	(41)
Unrealized loss (gain) on securities carried at fair value	142	(7,254)
Unrealized gain on loan securities carried at fair value	(215)	(447)
Impairment loss on investment in real estate	2,904	698
Tenant leasing costs	(3,365)	(3,211)
Gain on sale of real estate investments	(10,948)	(945)
Equity compensation expenses	557
Bad debt expense (recovery)	104	(116)
Changes in assets and liabilities:
Interest receivable	58	(293)
Accounts receivable and other assets	450	533
Accounts payable, accrued liabilities and other liabilities	(255)	4,425
Net cash provided by operating activities	25,835	37,712
Cash flows from investing activities
Investments in real estate	(6,289)	(29,975)
Investment in equity investments	(11,982)	(47,925)
Investment in preferred equity investments		(4,000)
Proceeds from sale of investments in real estate	36,217	7,024
Proceeds from sale of equity investments	26	2,297
Return of capital distribution from equity investments	14,649	83,736
Purchase of securities carried at fair value		(5,654)
Proceeds from sale of securities carried at fair value	12,345	4,614
Restricted cash held in escrows	(2,677)	(4,478)
Issuance and acquisition of loans receivable	(21,437)	(64,970)
Collection of loans receivable	47,597	37,126
Proceeds from sale of loans receivable	19,318
Cash from consolidation of properties	473
Issuance of secured financing receivable	(30,000)
Deposits on real estate	(25,606)
Net cash provided by (used in) investing activities	32,634	(22,205)
Cash flows from financing activities
Proceeds from mortgage loans payable	48,100	15,897
Principal payments of mortgage loans payable	(20,295)	(8,740)
Payment of secured financing	(23,770)
Proceeds from issuance of Series D Preferred Shares		77,572
Proceeds from issuance of Senior Notes Payable		86,250
Repayment of revolving line of credit		(40,000)
Restricted cash held in escrows	(2,921)	(2,818)
Deferred financing costs	(789)	(3,766)
Contribution from non-controlling interest	861	4,340
Distribution to non-controlling interest	(52)	(6,115)
Purchase of non-controlling interests	(150)	(400)
Issuance of Common Shares under Dividend Reinvestment Plan	353	397
Issuance of Common Shares through offering	29,960
Dividend paid on Common Shares	(16,102)	(16,113)
Dividend paid on Series D Preferred Shares	(5,574)	(3,712)
Dividend paid on Restricted Shares	(10)
Net cash provided by financing activities	9,611	102,792
Net increase in cash and cash equivalents	68,080	118,299
Cash and cash equivalents at beginning of period	97,682	40,952
Cash and cash equivalents at end of period	165,762	159,251
Supplemental Disclosure of Cash Flow Information
Interest paid	17,780	11,248
Capitalized interest	600
Taxes paid	201	317
Supplemental Disclosure on Non-Cash Investing and Financing Activities
Dividends accrued on Common Shares	6,018	5,375
Dividends accrued on Series D Preferred Shares	2,786	2,786
Capital expenditures accrued	2,547	2,777
Transfer from loans receivable		(2,938)
Transfer from preferred equity		(3,923)
Transfer to equity investment		6,861
Transfer to loan receivable		6,550
Transfer from equity investment		(12,400)
Transfer to additional paid-in capital		5,487
Transfer to non-controlling interests		363
Contribution to WRT-Elad One South State Equity L.P.	$ 897

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Receivables - Summary of Trust's Loans Receivable (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2013
Mezzanine [Member] | Renaissance Walk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Libor floor	2.00%
Mezzanine [Member] | Playa Vista [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Libor floor	0.50%
Whole Loan [Member] | Hotel Wales [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Libor floor	3.00%
Whole Loan [Member] | Queensridge [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Libor floor	0.50%

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Fair Value Measurements - Carrying Value and Estimated Fair Value of Financial Instruments Not Recorded at Fair Value on a Recurring Basis (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Aug. 31, 2012
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans receivable	$ 108,163,000	$ 211,250,000
Secured financing receivable	30,395,000
Mortgage loans payable	308,049,000	280,576,000
Senior notes payable	86,250,000	86,250,000	86,250,000
Secured financings	29,150,000	52,920,000
Notes payable	1,664,000	1,676,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans receivable
Mortgage loans payable
Senior notes payable	89,666,000	89,183,000
Secured financings
Notes payable
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans receivable
Mortgage loans payable
Senior notes payable
Secured financings
Notes payable
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans receivable	122,876,000	222,246,000
Secured financing receivable	30,395,000
Mortgage loans payable	296,678,000	270,923,000
Senior notes payable
Secured financings	29,366,000	53,253,000
Notes payable	1,664,000	1,676,000
Fair Value [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Loans receivable	122,876,000	222,246,000
Secured financing receivable	30,395,000
Mortgage loans payable	296,678,000	270,923,000
Senior notes payable	89,666,000	89,183,000
Secured financings	29,366,000	53,253,000
Notes payable	$ 1,664,000	$ 1,676,000

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Reportable Segments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013 Segment
Segment Reporting [Abstract]
Number of Operating Segments	3

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Designated as Hedging Instrument [Member]

Interest Rate Derivatives Designated and Non Designated

The table below presents information about the Trust’s interest rate caps and interest rate swaps that are included on the consolidated balance sheet that were designated as cash flow hedges of interest rate risk at September 30, 2013 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge in Other Comprehensive Income			Unrealized (Loss) Gain on Hedge in Other Comprehensive Income			Change in Hedge Valuations Included in Other Comprehensive Income for the Three Months Ended September 30, 2013			Change in Hedge Valuations Included in Other Comprehensive Income for the Nine Months Ended September 30, 2013
Aug 2014		0.50	%	$	13,197	$	22	$	1		$	—		$	(3	)	$	(4	)
May 2016		0.50	%	$	42,922	$	—	$	(15	)	$	(15	)	$	(147	)	$	(15	)

The table below presents information about the Trust’s interest rate caps that were not designated as cash flow hedges at September 30, 2013 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value		Change in Cap Valuations Included in Interest Expense for the Three Months Ended September 30, 2013		Change in Cap Valuations Included in Interest Expense for the Nine Months Ended September 30, 2013
May 2013		1.25	%	$	—	$	196	$	—	$	—	$	—
May 2014		1.75	%		51,982		434		—		—		—
Oct 2014		1.00	%		5,753		174		—		1		1

Not Designated as Hedging Instrument [Member]

Interest Rate Derivatives Designated and Non Designated

The table below presents information about the Trust’s interest rate caps and interest rate swaps that are included on the consolidated balance sheet that were designated as cash flow hedges of interest rate risk at September 30, 2012 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value of Hedge in Other Comprehensive Income			Unrealized Gain on Hedge in Other Comprehensive Income		Change in Hedge Valuations Included in Other Comprehensive Income for the Three Months Ended September 30, 2012			Change in Hedge Valuations Included in Other Comprehensive Income for the Nine Months Ended September 30, 2012
Aug 2014		0.50	%	$	13,478	$	22	$	—		$	—	$	—		$	—
Oct 2014		1.00	%	$	21,000	$	174	$	(165	)	$	—	$	(17	)	$	(77	)

The table below presents information about the Trust’s interest rate caps that were not designated as cash flow hedges at September 30, 2012 (in thousands):

Maturity	Strike Rate			Notional Amount of Hedge		Cost of Hedge		Estimated Fair Value		Change in Cap Valuations Included in Interest Expense for the Three Months Ended September 30, 2012		Change in Cap Valuations Included in Interest Expense for the Nine Months Ended September 30, 2012
May 2013		1.25	%	$	51,982	$	196	$	—	$	—	$	18
May 2014		1.75	%		51,982		434		1		5		46

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Restricted Share Grants - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended	1 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	May 28, 2013 2007 Stock Option Plan [Member]	Feb. 28, 2013 2007 Stock Option Plan [Member]	Sep. 30, 2013 2007 Stock Option Plan [Member]	May 20, 2013 2007 Stock Option Plan [Member]	Jan. 31, 2013 2007 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted common shares issued							600,000
Increase in shares issuable under the Trust's 2007 Stock Option Plan by shareholders							500,000
Initial public offering			500,000	100,000
Increase in shares issuable under the Trust's 2007 Stock Option Plan					1,000,000	100,000
Non-cash compensation expense	$ 346	$ 557
Restricted Shares forfeited		0

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Variable Interest Entities - The Accompanying Unaudited Pro Forma Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Variable Interest Entities [Abstract]
Total revenue	$ 18,842	$ 18,151	$ 59,502	$ 57,913
Consolidated net income	10,133	16,010	30,797	26,591
Net income attributable to Winthrop Realty Trust	$ 11,128	$ 15,660	$ 33,489	$ 28,207
Per common share data-basic	$ 0.25	$ 0.39	$ 0.76	$ 0.66
Per common share data-diluted	$ 0.25	$ 0.39	$ 0.76	$ 0.66

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Debt - Mortgage Loans Payable (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Interest rate, description	LIBOR plus 3%
Mortgage loans payable	$ 308,049	$ 280,576
Three Percent Loan Due August Two Thousand and Fourteen [Member] | Memphis, TN [Member]
Debt Instrument [Line Items]
Maturity	Aug 2014
Interest rate, description	Libor + 2.5%
Interest rate	3.00%
Mortgage loans payable	13,197	13,408
Two Point Six Nine Percent Loan Due October Two Thousand and Fourteen [Member] | Lisle, IL [Member]
Debt Instrument [Line Items]
Maturity	Oct 2014
Interest rate, description	Libor + 2.5%
Interest rate	2.69%
Mortgage loans payable	5,752	5,752
Six Point Two Five Percent Loan Due April Two Thousand and Fifteen [Member] | Chicago, IL [Member]
Debt Instrument [Line Items]
Maturity	Apr 2015
Interest rate, description
Interest rate	6.25%
Mortgage loans payable	8,619	8,700
Five Point Seven Five Percent Loan Due March Two Thousand and Sixteen [Member] | Chicago, IL [Member]
Debt Instrument [Line Items]
Maturity	Mar 2016
Interest rate, description
Interest rate	5.75%
Mortgage loans payable	19,941	20,200
Six Point Zero Nine Percent Loan Due April Two Thousand and Sixteen [Member] | Houston, TX [Member]
Debt Instrument [Line Items]
Maturity	Apr 2016
Interest rate, description
Interest rate	6.05%
Mortgage loans payable	48,460	52,052
Three Point Five Percent Due May Two Thousand Sixteen [Member] | New York, NY [Member]
Debt Instrument [Line Items]
Maturity	May 2016
Interest rate, description	Libor + 2.5%
Interest rate	3.50%
Mortgage loans payable	51,982	51,982
Two Point Five Percent Due May Two Thousand Sixteen [Member] | Philadelphia Pa [Member]
Debt Instrument [Line Items]
Maturity	May 2016
Interest rate, description	Libor + 2.0%
Interest rate	2.50%
Mortgage loans payable	42,684
Six Point Two Two Percent Loan Due August Two Thousand and Sixteen [Member] | Greensboro, NC [Member]
Debt Instrument [Line Items]
Maturity	Aug 2016
Interest rate, description
Interest rate	6.22%
Mortgage loans payable	14,837	15,139
Five Point Five Five Percent Loans Due March Two Thousand Seventeen [Member] | Lisle, IL [Member]
Debt Instrument [Line Items]
Maturity	Mar 2017
Interest rate, description
Interest rate	5.55%
Mortgage loans payable	5,488	5,543
Five Point Zero Seven Percent Loan Due January Two Thousand and Seventeen [Member] | Cerritos, CA [Member]
Debt Instrument [Line Items]
Maturity	Jan 2017
Interest rate, description
Interest rate	5.07%
Mortgage loans payable	23,153	23,184
Six Point Four Zero Percent Loans Due July Two Thousand Seventeen [Member] | Orlando, FL [Member]
Debt Instrument [Line Items]
Maturity	Jul 2017
Interest rate, description
Interest rate	6.40%
Mortgage loans payable	37,138	37,580
Six Point Four Five Percent Loans Due April Two Thousand Eighteen [Member] | Plantation, FL [Member]
Debt Instrument [Line Items]
Maturity	Apr 2018
Interest rate, description
Interest rate	6.45%
Mortgage loans payable	10,717	10,811
Three Point Nine Five Percent Loan Due October Two Thousand and Twenty Two [Member] | Meriden CT [Member]
Debt Instrument [Line Items]
Maturity	Oct 2022
Interest rate, description
Interest rate	3.95%
Mortgage loans payable	21,000	21,000
Three Point Five Percent Due August Two Thousand and Twenty Four [Member] | Churchill [Member]
Debt Instrument [Line Items]
Maturity	Aug 2024
Interest rate, description
Interest rate	3.50%
Mortgage loans payable	5,081
Five Point Six Five Percent Loan Due October Two Thousand and Thirteen [Member] | Amherst, NY [Member]
Debt Instrument [Line Items]
Maturity	Oct 2013
Interest rate, description
Interest rate	5.65%
Mortgage loans payable		$ 15,225

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Equity Investments - Trust's Carrying Amounts in its Equity Investments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Sealy [Member]	Dec. 31, 2012 Sealy [Member]	Sep. 30, 2013 Vintage Housing Holding LLC [Member]	Dec. 31, 2012 Vintage Housing Holding LLC [Member]	Sep. 30, 2013 Vintage Housing Holding LLC [Member] VHH LLC [Member]	Dec. 31, 2012 Vintage Housing Holding LLC [Member] VHH LLC [Member]	Sep. 30, 2013 WRT-Elad One South State Equity LP [Member]	Dec. 31, 2012 WRT-Elad One South State Equity LP [Member]	Sep. 30, 2013 WRT-Elad One South State Equity LP [Member] Elad Canada Inc [Member]	Dec. 31, 2012 WRT-Elad One South State Equity LP [Member] Elad Canada Inc [Member]	Sep. 30, 2013 WRT-Elad One South State Lender LP [Member]	Aug. 21, 2013 WRT-Elad One South State Lender LP [Member]	Sep. 30, 2013 WRT-Elad One South State Lender LP [Member] Elad Canada Inc [Member]	Dec. 31, 2012 WRT-Elad One South State Lender LP [Member] Elad Canada Inc [Member]	Sep. 30, 2013 WRT-Stamford LLC [Member]	Dec. 31, 2012 WRT-Stamford LLC [Member]	Sep. 30, 2013 WRT-Stamford LLC [Member] Mack-Cali [Member]	Dec. 31, 2012 WRT-Stamford LLC [Member] Mack-Cali [Member]	Sep. 30, 2013 10 Metrotech Loan LLC [Member]	Dec. 31, 2012 10 Metrotech Loan LLC [Member]	Aug. 31, 2012 10 Metrotech Loan LLC [Member]	Sep. 30, 2013 10 Metrotech Loan LLC [Member] Atrium/Northstar [Member]	Dec. 31, 2012 10 Metrotech Loan LLC [Member] Atrium/Northstar [Member]	Sep. 30, 2013 RE CDO Management LLC [Member]	Dec. 31, 2012 RE CDO Management LLC [Member]	Sep. 30, 2013 RE CDO Management LLC [Member] Atrium Holding [Member]	Dec. 31, 2012 RE CDO Management LLC [Member] Atrium Holding [Member]	Sep. 30, 2013 Mentor Retail LLC [Member]	Dec. 31, 2012 Mentor Retail LLC [Member]	Sep. 30, 2013 Mentor Retail LLC [Member] Freed [Member]	Dec. 31, 2012 Mentor Retail LLC [Member] Freed [Member]	Sep. 30, 2013 Concord Debt Holdings LLC [Member]	Feb. 25, 2013 Concord Debt Holdings LLC [Member]	Dec. 31, 2012 Concord Debt Holdings LLC [Member]	Sep. 30, 2013 Concord Debt Holdings LLC [Member] Inland [Member]	Dec. 31, 2012 Concord Debt Holdings LLC [Member] Inland [Member]	Sep. 30, 2013 CDH CDO LLC [Member]	Dec. 31, 2012 CDH CDO LLC [Member]	Sep. 30, 2013 CDH CDO LLC [Member] Inland [Member]	Dec. 31, 2012 CDH CDO LLC [Member] Inland [Member]	Sep. 30, 2013 Concord Debt Holdings (1) [Member] Inland [Member]	Dec. 31, 2012 Concord Debt Holdings (1) [Member] Inland [Member]	Sep. 30, 2013 CDH CDO (1) [Member] Inland [Member]	Dec. 31, 2012 CDH CDO (1) [Member] Inland [Member]	Sep. 30, 2013 Northwest Atlanta Partners LP [Member] Sealy [Member]	Dec. 31, 2012 Northwest Atlanta Partners LP [Member] Sealy [Member]	Sep. 30, 2013 New Market GP LLC [Member] Sealy [Member]	Dec. 31, 2012 New Market GP LLC [Member] Sealy [Member]	Sep. 30, 2013 Airpark Nashville GP [Member] Sealy [Member]	Dec. 31, 2012 Airpark Nashville GP [Member] Sealy [Member]	Sep. 30, 2013 Brooks Building LLC [Member] Marc Realty [Member]	Dec. 31, 2012 Brooks Building LLC [Member] Marc Realty [Member]	Sep. 30, 2013 High Point Plaza LLC [Member] Marc Realty [Member]	Dec. 31, 2012 High Point Plaza LLC [Member] Marc Realty [Member]	Sep. 30, 2013 1701 Woodfield LLC [Member] Marc Realty [Member]	Dec. 31, 2012 1701 Woodfield LLC [Member] Marc Realty [Member]	Sep. 30, 2013 Enterprise Center LLC [Member] Marc Realty [Member]	Dec. 31, 2012 Enterprise Center LLC [Member] Marc Realty [Member]	Sep. 30, 2013 Atrium Mall LLC [Member]	Dec. 31, 2012 Atrium Mall LLC [Member]	Sep. 30, 2013 Atrium Mall LLC [Member] Marc Realty [Member]	Dec. 31, 2012 Atrium Mall LLC [Member] Marc Realty [Member]	Sep. 30, 2013 WRT - ROIC Lakeside Eagle LLC [Member]	Dec. 31, 2012 WRT - ROIC Lakeside Eagle LLC [Member]	Sep. 30, 2013 WRT - ROIC Lakeside Eagle LLC [Member] ROIC [Member]	Dec. 31, 2012 WRT - ROIC Lakeside Eagle LLC [Member] ROIC [Member]	Sep. 30, 2013 Socal Office Portfolio Loan LLC [Member]	Dec. 31, 2012 Socal Office Portfolio Loan LLC [Member]	Sep. 30, 2013 Socal Office Portfolio Loan LLC [Member] New Valley/Starwood [Member]	Dec. 31, 2012 Socal Office Portfolio Loan LLC [Member] New Valley/Starwood [Member]	Sep. 30, 2013 701 7th WRT Investors LLC [Member]	Dec. 31, 2012 701 7th WRT Investors LLC [Member]	Sep. 30, 2013 701 7th WRT Investors LLC [Member] New Valley/Witkoff [Member]	Dec. 31, 2012 701 7th WRT Investors LLC [Member] New Valley/Witkoff [Member]	Sep. 30, 2013 WRT-Fenway Wateridge LLC [Member]	Dec. 31, 2012 WRT-Fenway Wateridge LLC [Member]	Sep. 30, 2013 WRT-Fenway Wateridge LLC [Member] Fenway [Member]	Dec. 31, 2012 WRT-Fenway Wateridge LLC [Member] Fenway [Member]
Schedule Of Results Related To Equity Accounted Investees [Line Items]
Nominal % Ownership							75.00%				50.00%		50.00%	50.00%	50.00%				20.00%				33.33%	33.30%				50.00%				49.90%			17.00%		33.30%				24.80%						60.00%		68.00%		50.00%		50.00%		50.00%		50.00%		50.00%				50.00%				50.00%				73.00%				70.60%				50.00%
Equity investments	$ 139,061,000	$ 134,859,000	$ 7,741,000	$ 8,104,000	$ 33,706,000	$ 30,534,000	$ 33,706,000	$ 30,534,000		$ 460,000		$ 460,000			$ 24,518,000	$ 24,644,000	$ 8,916,000	$ 8,501,000	$ 8,916,000	$ 8,501,000	$ 11,000	$ 10,845,000		$ 11,000	$ 10,845,000	$ 993,000	$ 1,779,000	$ 993,000	$ 1,779,000	$ 596,000	$ 551,000	$ 596,000	$ 551,000										$ 982,000	$ 3,974,000	$ 4,181,000	$ 322,000	$ 7,741,000	$ 8,104,000					$ 8,076,000	$ 7,983,000	$ 2,137,000	$ 2,241,000	$ 2,052,000	$ 1,977,000	$ 2,440,000	$ 2,679,000	$ 3,904,000		$ 3,904,000		$ 3,000		$ 3,000			$ 8,000		$ 8,000	$ 36,989,000	$ 28,735,000	$ 36,989,000	$ 28,735,000	$ 1,816,000	$ 1,522,000	$ 1,816,000	$ 1,522,000
Nominal % Ownership							75.00%				50.00%		50.00%	50.00%	50.00%				20.00%				33.33%	33.30%				50.00%				49.90%			17.00%		33.30%				24.80%						60.00%		68.00%		50.00%		50.00%		50.00%		50.00%		50.00%				50.00%				50.00%				73.00%				70.60%				50.00%

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Reportable Segments - Summary of Assets by Business Segment (Detail) (USD $) In Thousands, unless otherwise specified					9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2013 Operating Segments [Member]	Dec. 31, 2012 Operating Segments [Member]
Assets
Operating properties					$ 630,666	$ 562,822
Loan assets					154,265	239,534
REIT securities	7,074	19,694			7,074	19,694
Cash and cash equivalents	165,762	97,682	159,251	40,952	165,762	97,682
Restricted cash	19,084	13,250			7,387
Accounts receivable and prepaids					574	336
Deferred financing costs					2,757	3,095
TOTAL ASSETS	968,485	923,163			968,485	923,163
Capital Expenditures
Operating Properties					$ 2,835	$ 12,417

XML

Discontinued Operations

9 Months Ended

Sep. 30, 2013

Discontinued Operations And Disposal Groups [Abstract]

Discontinued Operations

13. Discontinued Operations

During 2012 the Trust’s net lease retail property in Memphis, Tennessee and its office property in Indianapolis, Indiana were sold and are included in discontinued operations. During 2013 the Trust’s net lease retail properties in Denton, Texas and Seabrook, Texas and its office properties located in Deer Valley, Arizona and Andover, Massachusetts were sold and are included in discontinued operations for all periods presented. The Trust’s office property located at 701 Arboretum in Lisle, Illinois was classified as held for sale as of September 30, 2013 and is included in discontinued operations for all periods presented.

Results for discontinued operations for the three and nine months ended September 30, 2013 and 2012 are as follows (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30, 2013			September 30, 2012			September 30, 2013			September 30, 2012
Revenues	$	10		$	1,263		$	1,598		$	4,261
Termination fee income		—			592			—			592
Operating expenses		(94	)		(675	)		(1,028	)		(2,016	)
Interest expense		—			(685	)		—			(842	)
Depreciation and amortization		(21	)		(657	)		(589	)		(1,648	)
Gain on sale of assets		1,421			945			10,948			945
Impairment loss		(2,750	)		(698	)		(2,904	)		(698	)
(Loss) income from discontinued operations	$	(1,434	)	$	85		$	8,025		$	594

XML

Debt

9 Months Ended

Sep. 30, 2013

Debt Disclosure [Abstract]

Debt

8. Debt

Mortgage Loans Payable

The Trust had outstanding non-recourse mortgage loans payable of $308,049,000 and $280,576,000 at September 30, 2013 and December 31, 2012, respectively. The mortgage loan payments of principal and interest are generally due monthly, quarterly or semi-annually and are collateralized by applicable real estate of the Trust.

On July 26, 2013 the Trust used cash on hand to fully satisfy the $14,943,000 balance outstanding on the first mortgage loan collateralized by its Amherst, New York property which was scheduled to mature in October 2013.

The Trust’s mortgage loans payable at September 30, 2013 and December 31, 2012 are summarized as follows (in thousands):

Location of Collateral	Maturity			Spread Over LIBOR (1)			Interest Rate at September 30, 2013			September 30, 2013		December 31, 2012
Memphis, TN		Aug 2014			Libor + 2.5	% (2)		3.00	%	$	13,197	$	13,408
Lisle, IL		Oct 2014			Libor + 2.5	% (3)		2.69	%		5,752		5,752
Chicago, IL		Apr 2015			—			6.25	%		8,619		8,700
Chicago, IL		Mar 2016			—			5.75	%		19,941		20,200
Houston, TX		Apr 2016			—			6.05	%		48,460		52,052
New York, NY		May 2016			Libor + 2.5	% (4)		3.50	%		51,982		51,982
Philadelphia, PA		May 2016			Libor + 2.0	% (5)		2.50	%		42,684		—
Greensboro, NC		Aug 2016			—			6.22	%		14,837		15,139
Lisle, IL		Mar 2017			—			5.55	%		5,488		5,543
Cerritos, CA		Jan 2017			—			5.07	%		23,153		23,184
Orlando, FL		Jul 2017			—			6.40	%		37,138		37,580
Plantation, FL		Apr 2018			—			6.45	%		10,717		10,811
Meriden, CT		Oct 2022			—			3.95	%		21,000		21,000
Churchill, PA (6)		Aug 2024			—			3.50	%		5,081		—
Amherst, NY			(7)		—			5.65	%		—		15,225
										$	308,049	$	280,576

(1) The one-month LIBOR rate at September 30, 2013 was 0.17885%.

(2) The loan has a LIBOR floor of 0.5% and an interest rate cap which caps LIBOR at 0.5%.

(3) The loan has an interest rate cap which caps LIBOR at 1%.

(4) The loan has a LIBOR floor of 1% and an interest rate cap which caps LIBOR at 1.75%.

(5) The loan has an interest rate swap which effectively fixes LIBOR at 0.5%.

(6) The loan was obtained on June 28, 2013. See Note 4 for details on this transaction.

(7) The loan was fully satisfied on July 26, 2013.

Non-Recourse Secured Financing

The Trust’s non-recourse secured financings at September 30, 2013 and December 31, 2012 are summarized as follows (in thousands):

									Carrying Value
Collateral	Maturity		Spread Over LIBOR/ Prime			Interest Rate at September 30, 2013			September 30, 2013		December 31, 2012
Hotel Wales Loan		Oct 2014		LIBOR plus 1.25	% (1)		4.25	%	$	14,000	$	14,000
San Marbeya Loan		Jan 2015		—			4.85	%		15,150		15,150
									$	29,150	$	29,150

(1) The loan has a LIBOR floor of 3%.

Recourse Secured Financing

The Trust’s recourse secured financing was repaid in full at September 30, 2013. Details of the recourse secured financing are as follows (in thousands):

								Carrying Value
Collateral	Maturity		Spread Over LIBOR/Prime			Interest Rate at September 30, 2013		September 30, 2013		December 31, 2012
Queensridge Loan		Nov 2014		LIBOR plus 4	%		N/A	$	—	$	23,770
								$	—	$	23,770

Notes Payable

In conjunction with the loan modification on the property located in Cerritos, California the Trust assumed a $14,500,000 B Note that bears interest at 6.6996% per annum and requires monthly interest payments of approximately $12,000 with the balance of the interest accruing. The loan modification agreement provides for a participation feature whereby the B Note can be fully satisfied with proceeds from the sale of the property after the Trust receives a 9.0% priority return on its capital during a specified time period, as defined in the loan modification document. As of September 30, 2013 the carrying value of the participating B Note was $864,000 which approximates fair value. The inputs used in determining the estimated fair value of the Trust’s Notes Payable are categorized as Level 3 in the fair value hierarchy. See Note 18 for additional information regarding this property.

On October 15, 2012 an entity in which the Trust holds an interest and consolidates, 5400 Westheimer LP, executed a note payable to its partners in the amount of $1,600,000. The note bears interest at 15% per annum and matures on October 15, 2022. Since the Trust holds 50% of the loan, $800,000 of the note payable and associated interest is eliminated in consolidation for accounting purposes. The balance of the note as of September 30, 2013 was $800,000 which approximates fair value.

XML

Debt - Non-Recourse Secured Financings (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Loan bears interest, description of variable rate basis	LIBOR plus 3%
Non-Recourse Secured Financing [Member]
Debt Instrument [Line Items]
Non-recourse secured financings	$ 29,150,000	$ 29,150,000
Non-Recourse Secured Financing [Member] | Hotel Wales Loan [Member]
Debt Instrument [Line Items]
Maturity	Oct 2014
Loan bears interest, description of variable rate basis	LIBOR plus 1.25 %
Interest rate	4.25%
Non-recourse secured financings	14,000,000	14,000,000
Non-Recourse Secured Financing [Member] | San Marbeya Loan [Member]
Debt Instrument [Line Items]
Maturity	Jan 2015
Loan bears interest, description of variable rate basis
Interest rate	4.85%
Non-recourse secured financings	$ 15,150,000	$ 15,150,000

XML

Restricted Share Grants

9 Months Ended

Sep. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Restricted Share Grants

16. Restricted Share Grants

On February 1, 2013 the Board approved the issuance of 600,000 shares of Restricted Common Shares (“Restricted Shares”) to the Trust’s Advisor, 500,000 of which were subject to the approval of the shareholders to the increase in the number of shares issuable under the Trust’s 2007 Stock Option Plan (the “SOP”). The initial 100,000 Restricted Shares were issued on February 28, 2013. At the May 21, 2013 annual shareholders meeting the increase in shares issuable under the SOP from 100,000 to 1,000,000 was approved by the requisite number of shareholders and the remaining 500,000 shares were issued on May 28, 2013. The Restricted Shares are subject to forfeiture through December 31, 2017. Except in limited circumstances, if the holder of the Restricted Shares does not remain in continuous employment with FUR Advisors or its affiliate through December 31, 2017 (the “Forfeiture Period”), all of their rights to the Restricted Shares and the associated dividends held in escrow will be forfeited. Dividends will be paid on the issued Restricted Shares in conjunction with dividends on Common Shares not issued under the SOP. However, the recipients of the Restricted Shares will only receive dividends as if the shares vested quarterly over the Forfeiture Period, with the remaining dividends to be placed into escrow and paid to the holders at the expiration of the Forfeiture Period.

Until the awards are no longer subject to forfeiture, the Trust measures stock-based compensation expense at each reporting date for any changes in fair value and recognizes the expense prorated for the portion of the requisite service period completed. Accordingly, the Trust recognized $346,000 and $557,000 in non-cash compensation expense for the three and nine months ended September 30, 2013. As of September 30, 2013 there were no forfeitures of Restricted Shares.

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2013

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

14. Commitments and Contingencies

In addition to the initial purchase price of certain loans and operating properties, the Trust has future funding commitments attributable to its 450 W 14^th Street property, 701 Seventh Avenue investment and 1515 Market Street loan which total approximately $88,913,000 at September 30, 2013. The Trust has a ground lease related to its property located at 450 W 14^th Street, New York, New York which expires on June 1, 2053. As of September 30, 2013, in connection with the ground lease, the Trust has commitments of $337,000; $1,405,000; $1,463,000; $1,592,000; $1,656,000 and $109,419,000 for the years ended December 31, 2013, 2014, 2015, 2016, 2017 and thereafter, respectively.

The Trust is involved from time to time in litigation on various matters, including disputes with tenants and disputes arising out of agreements to purchase or sell properties. Given the nature of the Trust’s business activities, these lawsuits are considered routine to the conduct of its business. The result of any particular lawsuit cannot be predicted because of the very nature of litigation, the litigation process and its adversarial nature, and the jury system. The Trust does not expect that the liabilities, if any, that may ultimately result from such legal actions will have a material adverse effect on its financial condition or results of operations.

Churchill, Pennsylvania – In 2011 the Trust was conveyed title to the land underlying the Churchill, Pennsylvania property. Prior to the conveyance of the land, a Phase II environmental study was performed. The study found that there were certain contaminants at the property all of which were within permitted ranges. In addition, given the nature and use of the property currently and in the past, it is possible that there may be contamination that could require remediation. The Trust believes that based on applicable law and existing agreements any such remediation costs would be the responsibility of a prior owner or tenant.

In connection with the settlement agreement entered into on September 30, 2011 with CBS Corporation (“CBS”), the Trust was required to market the Churchill, Pennsylvania property for sale and to the extent the property was sold or the Trust received a responsible offer as defined in the settlement agreement from a credit worthy third party in an amount in excess of $6,500,000, net of closing costs, the Trust is required to pay to CBS the sum of 50% of such net proceeds in excess of $6,500,000. In this regard, the Trust received an offer on the portion of the property leased to Westinghouse Electric Company LLC which would have resulted in net proceeds in excess of $6,500,000. The Trust did not pursue the sale of the property and as of September 30, 2013 recorded a payable in the amount of $150,000 representing the 50% excess due to CBS. If certain conditions, which are not considered probable as of September 30, 2013, are met in the future, the Trust could be liable to pay an additional contingent fee of approximately $340,000.

XML

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 01, 2013
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Registrant Name	Winthrop Realty Trust
Entity Central Index Key	0000037008
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		36,408,018

XML

Reportable Segments - Summary of Revenues from Operating Properties, Loan Assets and REIT Securities and Expenses Incurred by Each Segment (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Rents and reimbursements	$ 15,099,000	$ 12,224,000	$ 45,026,000	$ 35,022,000
Interest and dividends	3,917,000	3,722,000	13,545,000	15,018,000
Depreciation and amortization expense	(4,923,000)	(4,416,000)	(14,703,000)	(11,623,000)
Gain (loss) on sale of securities carried at fair value	(31,000)		(133,000)	41,000
Real estate taxes	(1,705,000)	(1,160,000)	(4,184,000)	(3,116,000)
Equity in (loss) income of equity investments	13,856,000	12,809,000	26,249,000	14,051,000
Interest income	101,000	242,000	286,000	433,000
Loan discount accretion	806,000	425,000	2,283,000	5,984,000
Interest expense	(5,435,000)	(4,416,000)	(18,175,000)	(11,560,000)
Settlement expense	(16,000)		(150,000)
Loan assets operating income	19,016,000	15,946,000	58,571,000	50,040,000
General and administrative expense	(1,113,000)	(782,000)	(3,058,000)	(2,447,000)
Related party fees	(2,309,000)	(2,316,000)	(6,866,000)	(6,641,000)
Operating properties net income (loss)	12,671,000	8,640,000	37,520,000	21,886,000
Income from continuing operations	12,167,000	15,962,000	23,404,000	25,690,000
(Loss) income from discontinued operations attributable to Winthrop Realty Trust	(1,434,000)	85,000	8,025,000	594,000
Net income	10,733,000	16,047,000	31,429,000	26,284,000
Net loss (income) attributable to non-controlling interest	995,000	(939,000)	2,419,000	435,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
Rents and reimbursements	15,099,000	12,224,000	45,026,000	35,022,000
Depreciation and amortization expense	(4,923,000)	(4,416,000)	(14,703,000)	(11,623,000)
Operating expenses	(5,272,000)	(3,335,000)	(14,697,000)	(10,643,000)
Real estate taxes	(1,705,000)	(1,160,000)	(4,184,000)	(3,116,000)
Interest expense	(3,272,000)	(3,126,000)	(11,131,000)	(9,230,000)
Operating properties net income (loss)	4,460,000	1,098,000	11,536,000	1,033,000
Operating Segments [Member] | Fenway-Wateridge [Member]
Segment Reporting Information [Line Items]
Equity in earnings of preferred equity investment	189,000		576,000
Equity in (loss) income of equity investments	50,000		133,000
Operating Segments [Member] | Sealy Northwest Atlanta [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	(130,000)	(109,000)	(363,000)	(273,000)
Operating Segments [Member] | Sealy Newmarket [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments		(704,000)		(2,171,000)
Operating Segments [Member] | Marc Realty [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	(26,000)	377,000	(17,000)	33,000
Operating Segments [Member] | WRT Elad [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	905,000	(57,000)	1,515,000	458,000
Operating Segments [Member] | Vintage [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	2,525,000	1,392,000	7,142,000	2,326,000
Operating Segments [Member] | 701 Seventh Avenue [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	1,055,000		2,375,000
Operating Segments [Member] | Mentor [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	12,000	12,000	45,000	18,000
Operating Segments [Member] | Atrium Mall LLC [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	(31,000)		(31,000)
Operating Segments [Member] | F-II Co Invest Llc [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments				232,000
Loan Assets [Member]
Segment Reporting Information [Line Items]
Interest income	3,011,000	2,985,000	10,912,000	8,130,000
Loan discount accretion	806,000	425,000	2,283,000	5,984,000
Interest expense	(335,000)	(336,000)	(1,562,000)	(1,004,000)
Unrealized (loss) gain on securities carried at fair value		371,000	215,000	447,000
Loan assets operating income	13,313,000	15,679,000	28,860,000	27,989,000
General and administrative expense	(2,000)	(15,000)	(37,000)	(40,000)
Operating properties net income (loss)	12,976,000	15,328,000	27,261,000	26,945,000
Loan Assets [Member] | Sealy ROIC Riverside [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments		238,000		706,000
Loan Assets [Member] | ROIC Lakeside Eagle [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	(7,000)	(16,000)	(22,000)	(32,000)
Loan Assets [Member] | Concord Debt Holdings [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	2,970,000	35,000	3,041,000	386,000
Loan Assets [Member] | CDH CDO LLC [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	265,000	136,000	415,000	670,000
Loan Assets [Member] | Concord Debt Holdings (1) [Member]
Segment Reporting Information [Line Items]
Equity in earnings of preferred equity investment	20,000	2,000	49,000	30,000
Loan Assets [Member] | CDH CDO (1) [Member]
Segment Reporting Information [Line Items]
Equity in earnings of preferred equity investment	3,367,000	855,000	4,274,000	1,333,000
Loan Assets [Member] | WRT-Stamford LLC [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	256,000	232,000	701,000	548,000
Loan Assets [Member] | Socal Office Portfolio Loan LLC [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments		10,348,000	(2,000)	9,710,000
Loan Assets [Member] | RE CDO Management LLC [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	(51,000)	18,000	3,710,000	46,000
Loan Assets [Member] | 10 Metrotech [Member]
Segment Reporting Information [Line Items]
Equity in (loss) income of equity investments	2,676,000	50,000	3,284,000	31,000
REIT Securities [Member]
Segment Reporting Information [Line Items]
Interest and dividends	100,000	312,000	350,000	904,000
Gain (loss) on sale of securities carried at fair value	(31,000)		(133,000)	41,000
Unrealized (loss) gain on securities carried at fair value		3,113,000	(142,000)	7,254,000
Operating properties net income (loss)	69,000	3,425,000	75,000	8,199,000
Net Income Attributable to Winthrop Realty Trust	17,505,000	19,851,000	38,872,000	36,177,000
Reconciliations to GAAP Net Income [Member]
Segment Reporting Information [Line Items]
Interest income	101,000	242,000	286,000	433,000
Interest expense	(1,828,000)	(954,000)	(5,482,000)	(1,326,000)
General and administrative expense	(1,111,000)	(767,000)	(3,021,000)	(2,407,000)
Related party fees	(2,309,000)	(2,316,000)	(6,866,000)	(6,641,000)
Transaction costs	(106,000)	(30,000)	(158,000)	(335,000)
State and local taxes	(85,000)	(64,000)	(227,000)	(211,000)
Income from continuing operations	12,167,000	15,962,000	23,404,000	25,690,000
(Loss) income from discontinued operations attributable to Winthrop Realty Trust	(1,434,000)	85,000	8,025,000	594,000
Net income	10,733,000	16,047,000	31,429,000	26,284,000
Net loss (income) attributable to non-controlling interest	995,000	(939,000)	2,419,000	435,000
Net Income Attributable to Winthrop Realty Trust	$ 11,728,000	$ 15,108,000	$ 33,848,000	$ 26,719,000

XML

Related-Party Transactions

9 Months Ended

Sep. 30, 2013

Related Party Transactions [Abstract]

Related-Party Transactions

15. Related-Party Transactions

FUR Advisors – The activities of the Trust are administered by FUR Advisors LLC (“FUR Advisors”) pursuant to the terms of the Advisory Agreement between the Trust and FUR Advisors. FUR Advisors is controlled by and partially owned by the executive officers of the Trust. Pursuant to the terms of the Advisory Agreement, FUR Advisors is responsible for providing asset management services to the Trust and coordinating with the Trust’s shareholder transfer agent and property managers. FUR Advisors is entitled to receive a base management fee and in addition, FUR Advisors or its affiliate is also entitled to receive property and construction management fees subject to the approval of the independent Trustees of the Trust.

The following table sets forth the fees and reimbursements paid by the Trust for the three and nine months ended September 30, 2013 and 2012 to FUR Advisors and Winthrop Management L.P. (“Winthrop Management”) (in thousands):

	For the Three Months Ended				For the Nine Months Ended
	September 30, 2013		September 30, 2012		September 30, 2013		September 30, 2012
Base Asset Management	$	2,309	$	2,316	$	6,866	$	6,641
Property Management		304		193		895		506
Construction Management		112		33		381		97
	$	2,725	$	2,542	$	8,142	$	7,244

Base Asset Management Fee – FUR Advisors is entitled to receive a base management fee of 1.5% of equity as defined in the Advisory Agreement and in certain instances, a termination fee and/or an incentive fee in accordance with the terms of the Advisory Agreement. Additionally, FUR Advisors receives a fee equal to 0.25% of any equity contributions by unaffiliated third parties to a venture managed by the Trust.

Property Management and Construction Management – Winthrop Management, an affiliate of FUR Advisors and the Trust’s executive officers, assumed property management responsibilities for various properties owned by the Trust. Winthrop Management receives a property management fee and construction management fee pursuant to the terms of individual property management agreements. Construction management fees are capitalized in accordance with GAAP.

At September 30, 2013 $2,309,000 payable to FUR Advisors and $383,000 payable to Winthrop Management were included in related party fees payable.

XML

Equity Investments - Activity of the Trust's Equity Investments (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2013
Vintage Housing Holding LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment lag Period	1 month
WRT-Elad One South State Equity LP [Member]
Schedule of Equity Method Investments [Line Items]
Investment lag Period	1 month
WRT-Elad One South State Lender LP [Member]
Schedule of Equity Method Investments [Line Items]
Investment lag Period	1 month
WRT-Fenway Wateridge LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment lag Period	1 month
701 7th WRT Investors LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investment lag Period	3 months

XML

Equity Investments - Activity of the Trust's Equity Investments (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Beginning Balance			$ 134,859,000
Investment in equity investments			12,879,000
Equity Income (loss)	13,856,000	12,809,000	26,249,000	14,051,000
Distributions			(34,900,000)
Sales Price			(26,000)	(2,297,000)
Ending Balance	139,061,000		139,061,000
Sealy [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			8,104,000
Investment in equity investments
Equity Income (loss)			(363,000)
Distributions
Sales Price
Ending Balance	7,741,000		7,741,000
Vintage Housing Holding LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			30,534,000
Investment in equity investments
Equity Income (loss)			7,142,000
Distributions			(3,970,000)
Sales Price
Ending Balance	33,706,000		33,706,000
WRT-Elad One South State Equity LP [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			460,000
Investment in equity investments			1,013,000
Equity Income (loss)			(1,473,000)
Distributions
Sales Price
Ending Balance
WRT-Fenway Wateridge LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			1,522,000
Investment in equity investments			161,000
Equity Income (loss)			133,000
Distributions
Sales Price
Ending Balance	1,816,000		1,816,000
701 7th WRT Investors LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			28,735,000
Investment in equity investments			7,745,000
Equity Income (loss)			2,375,000
Distributions			(1,866,000)
Sales Price
Ending Balance	36,989,000		36,989,000
WRT-Elad One South State Lender Lp [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			24,644,000
Investment in equity investments
Equity Income (loss)			2,988,000
Distributions			(3,114,000)
Sales Price
Ending Balance	24,518,000		24,518,000
WRT-Stamford LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			8,501,000
Investment in equity investments
Equity Income (loss)			701,000
Distributions			(286,000)
Sales Price
Ending Balance	8,916,000		8,916,000
10 Metrotech Loan LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			10,845,000
Investment in equity investments
Equity Income (loss)			3,284,000
Distributions			(14,118,000)
Sales Price
Ending Balance	11,000		11,000
RE CDO Management LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			1,779,000
Investment in equity investments
Equity Income (loss)			3,710,000
Distributions			(4,496,000)
Sales Price
Ending Balance	993,000		993,000
Mentor Retail LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			551,000
Investment in equity investments
Equity Income (loss)			45,000
Distributions
Sales Price
Ending Balance	596,000		596,000
Concord Debt Holdings LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance
Investment in equity investments
Equity Income (loss)			3,041,000
Distributions			(3,041,000)
Sales Price
Ending Balance
CDH CDO LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance
Investment in equity investments
Equity Income (loss)			415,000
Distributions			(402,000)
Sales Price			(13,000)
Ending Balance
CDH CDO LLC (1) [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			322,000
Investment in equity investments
Equity Income (loss)			4,274,000
Distributions			(402,000)
Sales Price			(13,000)
Ending Balance	4,181,000		4,181,000
Marc Realty [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			14,880,000
Investment in equity investments
Equity Income (loss)			(17,000)
Distributions			(158,000)
Ending Balance	14,705,000		14,705,000
Atrium Mall LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance
Investment in equity investments			3,935,000
Equity Income (loss)			(31,000)
Distributions
Sales Price
Ending Balance	3,904,000		3,904,000
WRT - ROIC Lakeside Eagle LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance
Investment in equity investments			25,000
Equity Income (loss)			(22,000)
Distributions
Sales Price
Ending Balance	3,000		3,000
Socal Office Portfolio Loan LLC [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			8,000
Investment in equity investments
Equity Income (loss)			(2,000)
Distributions			(6,000)
Sales Price
Ending Balance
Concord Debt Holdings LLC (1) [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			3,974,000
Investment in equity investments
Equity Income (loss)			49,000
Distributions			(3,041,000)
Sales Price
Ending Balance	$ 982,000		$ 982,000

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Variable Interest Entities - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Jan. 31, 2013
Variable Interest Entity [Line Items]
Number of identified consolidated variable interest entities		2
Identified investments	11	11
Investments with no equity at risk	7	7
Number of additional entities		4
Unconsolidated joint venture	11	11
Number of assets identified as variable interests in variable interest entities	4	4
Investments lacking the right to receive returns		1
1515 Market Street [Member]
Variable Interest Entity [Line Items]
Trust acquired equity			49.00%
Revenue	$ 2,449,000	$ 6,942,000
Net income	514,000	1,586,000
Cerritos [Member]
Variable Interest Entity [Line Items]
Land and building	22,079,000	22,079,000
Net of accumulated depreciation	830,000	830,000
Lease intangibles	3,435,000	3,435,000
Accumulated amortization	627,000	627,000
Cerritos [Member] | Mortgage Debt Notes A [Member]
Variable Interest Entity [Line Items]
Mortgage debt	23,153,000	23,153,000
Cerritos [Member] | Mortgage Debt Notes B [Member]
Variable Interest Entity [Line Items]
Mortgage debt	864,000	864,000
1515 Market Street Loan Modification [Member]
Variable Interest Entity [Line Items]
Land and building	42,950,000	42,950,000
Net of accumulated depreciation	590,000	590,000
Lease intangibles	16,624,000	16,624,000
Accumulated amortization	1,566,000	1,566,000
Trust acquired equity	49.00%	49.00%
1515 Market Street Loan Modification [Member] | First Mortgage [Member]
Variable Interest Entity [Line Items]
Mortgage debt	42,683,000	42,683,000
1515 Market Street Loan Modification [Member] | Original Mortgage [Member]
Variable Interest Entity [Line Items]
Mortgage debt	$ 35,040,000	$ 35,040,000