10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended March 31, 2018

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 No. 1-35933 (Gramercy Property Trust)

Commission File No. 33-219049 (GPT Operating Partnership LP)

Gramercy Property Trust

GPT Operating Partnership LP

(Exact name of registrant as specified in its charter) 

Gramercy Property Trust	Maryland	56-2466617
GPT Operating Partnership LP	Delaware	56-2466618
	(State or other jurisdiction incorporation or organization)	(I.R.S. Employer of Identification No.)
90 Park Avenue, 32nd Floor, New York, NY 10016 (Address of principal executive offices – zip code)
(212) 297-1000 (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 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 the past 90 days. 

Gramercy Property Trust    Yes x      No ¨GPT Operating Partnership LP 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). 

Gramercy Property Trust    Yes x      No ¨GPT Operating Partnership LP Yes x      No ¨

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

Gramercy Property Trust

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

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

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

GPT Operating Partnership LP

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

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). 

Gramercy Property Trust    Yes ¨      No xGPT Operating Partnership LP Yes ¨      No x

The number of shares outstanding of Gramercy Property Trust’s common shares of beneficial interest, $0.01 par value, was 160,785,498 as of April 27, 2018.

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the period ended March 31, 2018 of Gramercy Property Trust and GPT Operating Partnership LP. Unless stated otherwise or the context otherwise requires, references to "Gramercy Property Trust," the "Company" or "Gramercy" mean Gramercy Property Trust and its consolidated subsidiaries; and references to "GPT Operating Partnership LP," the "Operating Partnership" or "GPTOP" mean GPT Operating Partnership LP and its consolidated subsidiaries. The terms "we," "our" and "us" mean the Company and all the entities owned or controlled by the Company, including the Operating Partnership.

The Company is a Maryland real estate investment trust, or REIT, which operates as a self-administered and self-managed entity and is the sole general partner of the Operating Partnership. As the general partner of the Operating Partnership, the Company has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Operating Partnership.

As of March 31, 2018, the Company owned 96.75% of the outstanding general and limited partnership interest in the Operating Partnership. As of March 31, 2018, noncontrolling investors owned approximately 3.25% of the outstanding limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership.

The Company and the Operating Partnership are managed and operated as one entity. The financial results of the Operating Partnership are consolidated into the financial statements of the Company. The Company has no significant assets other than its investment in the Operating Partnership. Substantially all of the Company’s assets are held by, and its operations are conducted through, the Operating Partnership. Therefore, the assets and liabilities of the Company and the Operating Partnership are substantially the same.

Noncontrolling interests in the Operating Partnership, shareholders' equity of the Company and partners' capital of the Operating Partnership are the main areas of difference between the consolidated financial statements of the Company and those of the Operating Partnership.

We believe combining the quarterly reports on Form 10-Q of the Company and the Operating Partnership into this single report results in the following benefits:

• Combined reports enhance investors' understanding of the Company and the Operating Partnershipby enabling investors to view the business as a whole in the same manner as management views and operates the business;

• Combined reports eliminate duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the Company's disclosure applies to both the Company and the Operating Partnership; and

• Combined reports create time and cost efficiencies through the preparation of one combined report instead of two separate reports.

To help investors understand the significant differences between the Company and the Operating Partnership, this report presents the following separate sections for each of the Company and the Operating Partnership:

• Consolidated financial statements; and

• The following notes to the consolidated financial statements:

◦ Note 9, Shareholders' Equity (Deficit) of the Company;

◦ Note 10, Partners' Capital of the Operating Partnership; and

◦ Note 11, Noncontrolling Interests.

This report also includes separate Part I, Item 4. Controls and Procedures sections and separate Exhibit 31 and 32 certifications for each of the Company and the Operating Partnership, respectively, in order to establish that the Chief Executive Officer and the Chief Financial Officer of the Company, in both their capacity as the principal executive officer and principal financial officer of the Company and the principal executive officer and principal financial officer of the general partner of the Operating Partnership, have made the requisite certifications and that the Company and the Operating Partnership are compliant with Rule 13a-15 and Rule 15d-15 of the Securities Exchange Act of 1934, as amended.

GRAMERCY PROPERTY TRUST

FORM 10-Q

TABLE OF CONTENTS

		Page
PART I.	FINANCIAL INFORMATION	1
ITEM 1.	FINANCIAL STATEMENTS	1
	Financial Statements of Gramercy Property Trust	1
	Consolidated Balance Sheets as of March 31, 2018 (unaudited) and December 31, 2017	1
	Consolidated Statements of Operations for the three months ended March 31, 2018 and 2017 (unaudited)	2
	Consolidated Statements of Comprehensive Income (Loss) for the three months ended March 31, 2018 and 2017 (unaudited)	3
	Consolidated Statement of Shareholders’ Equity (Deficit) and Noncontrolling Interest for the three months ended March 31, 2018 (unaudited)	4
	Consolidated Statements of Cash Flows for the three months ended March 31, 2018 and 2017 (unaudited)	5
	Financial Statements of GPT Operating Partnership LP	6
	Consolidated Balance Sheets as of March 31, 2018 (unaudited) and December 31, 2017	6
	Consolidated Statements of Operations for the three months ended March 31, 2018 and 2017 (unaudited)	7
	Consolidated Statements of Comprehensive Income (Loss) for the three months ended March 31, 2018 and 2017 (unaudited)	8
	Consolidated Statement of Partners’ Capital for the three months ended March 31, 2018 (unaudited)	9
	Consolidated Statements of Cash Flows for the three months ended March 31, 2018 and 2017 (unaudited)	10
	Notes to Consolidated Financial Statements (unaudited)	11
ITEM 2.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	45
ITEM 3.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	61
ITEM 4.	CONTROLS AND PROCEDURES	64
PART II.	OTHER INFORMATION	66
ITEM 1.	LEGAL PROCEEDINGS	66
ITEM 1A.	RISK FACTORS	66
ITEM 2.	UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS	66
ITEM 3.	DEFAULTS UPON SENIOR SECURITIES	66
ITEM 4.	MINE SAFETY DISCLOSURES	66
ITEM 5.	OTHER INFORMATION	66
ITEM 6.	INDEX TO EXHIBITS	67
SIGNATURES		68

Gramercy Property Trust

Consolidated Balance Sheets

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

PART I. FINANCIAL INFORMATION

ITEM I. FINANCIAL STATEMENTS

	March 31, 2018			December 31, 2017
Assets:
Real estate investments, at cost:
Land	$	1,009,568		$	1,023,908
Building and improvements	4,821,301			4,863,916
Less: accumulated depreciation	(368,815		)	(333,151		)
Total real estate investments, net	5,462,054			5,554,673
Cash and cash equivalents	41,964			30,231
Restricted cash	15,041			12,723
Investment in unconsolidated equity investments	99,113			70,214
Assets held for sale, net	402			402
Tenant and other receivables, net	92,525			88,750
Acquired lease assets, net of accumulated amortization of $241,939 and $220,473	563,213			598,559
Other assets	127,664			100,484
Total assets	$	6,401,976		$	6,456,036
Liabilities and Equity:
Liabilities:
Senior unsecured revolving credit facility	$	292,543		$	357,162
Mortgage notes payable, net	559,473			563,521
Senior unsecured notes, net	496,887			496,785
Senior unsecured term loans, net	1,448,241			1,448,152
Total long-term debt, net	2,797,144			2,865,620
Accounts payable and accrued expenses	60,151			59,619
Dividends payable	62,380			61,971
Below market lease liabilities, net of accumulated amortization of $31,201 and $28,978	159,544			166,491
Other liabilities	55,873			50,002
Total liabilities	$	3,135,092		$	3,203,703
Commitments and contingencies
Noncontrolling interest in the Operating Partnership	137,800			113,530
Equity:
Common shares, par value $0.01, 160,782,765 and 160,686,822 issued and outstanding at March 31, 2018 and December 31, 2017, respectively	1,608			1,607
Series A cumulative redeemable preferred shares, par value $0.01, liquidation preference $87,500, and 3,500,000 shares authorized, issued and outstanding at March 31, 2018 and December 31, 2017	84,394			84,394
Additional paid-in-capital	4,411,605			4,409,677
Accumulated other comprehensive income	35,667			12,776
Accumulated deficit	(1,404,416		)	(1,369,872		)
Total shareholders' equity	3,128,858			3,138,582
Noncontrolling interest in other entities	226			221
Total equity	$	3,129,084		$	3,138,803
Total liabilities and equity	$	6,401,976		$	6,456,036

The accompanying notes are an integral part of these financial statements.

1

Gramercy Property Trust

Consolidated Statements of Operations

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

	Three Months Ended March 31,
	2018			2017
Revenues
Rental revenue	$	122,245		$	103,282
Operating expense reimbursements	23,310			20,368
Third-party management fees	2,790			4,592
Other income	1,135			1,752
Total revenues	149,480			129,994
Operating Expenses
Depreciation and amortization	71,516			62,217
Property operating expenses	27,088			23,186
General and administrative expenses	9,686			8,756
Property management expenses	2,542			3,084
Total operating expenses	110,832			97,243
Operating income	38,648			32,751
Other Expenses:
Interest expense	(25,492		)	(23,056		)
Other-than-temporary impairment	—			(4,081		)
Portion of impairment recognized in other comprehensive loss	—			(809		)
Net impairment recognized in earnings	—			(4,890		)
Equity in net loss of unconsolidated equity investments	(926		)	(94		)
Loss on extinguishment of debt	—			(208		)
Impairment of real estate investments	—			(12,771		)
Income (loss) from continuing operations before provision for taxes	12,230			(8,268		)
Provision for taxes	(621		)	196
Income (loss) from continuing operations	11,609			(8,072		)
Loss from discontinued operations	—			(24		)
Income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Net income attributable to noncontrolling interest	(802		)	(154		)
Net income attributable to Gramercy Property Trust	27,062			9,127
Preferred share dividends	(1,559		)	(1,559		)
Net income available to common shareholders	$	25,503		$	7,568
Basic earnings per share:
Net income from continuing operations, after preferred dividends	$	0.16		$	0.05
Net income from discontinued operations	—			—
Net income available to common shareholders	$	0.16		$	0.05
Diluted earnings per share:
Net income from continuing operations, after preferred dividends	$	0.16		$	0.05
Net income from discontinued operations	—			—
Net income available to common shareholders	$	0.16		$	0.05
Basic weighted average common shares outstanding	160,408,136			140,907,399
Diluted weighted average common shares outstanding	160,416,900			141,875,619

The accompanying notes are an integral part of these financial statements.

2

Gramercy Property Trust

Consolidated Statements of Comprehensive Income (Loss)

(Unaudited, amounts in thousands)

	Three Months Ended March 31,
	2018			2017
Net income	$	27,864		$	9,281
Other comprehensive income (loss):
Unrealized loss on available for sale debt securities	(48		)	(2,820		)
Cumulative effect of accounting change	103			—
Unrealized gain on derivative instruments	22,050			4,378
Reclassification of unrealized gain on terminated derivative instruments into earnings	268			268
Foreign currency translation adjustments	518			691
Other comprehensive income	$	22,891		$	2,517
Comprehensive income	$	50,755		$	11,798
Net income attributable to noncontrolling interest	(802		)	(154		)
Other comprehensive (income) loss attributable to noncontrolling interest	697			(11		)
Comprehensive income attributable to Gramercy Property Trust	$	50,650		$	11,633

The accompanying notes are an integral part of these financial statements.

3

Gramercy Property Trust

Consolidated Statement of Shareholders’ Equity (Deficit) and Noncontrolling Interest

(Unaudited, amounts in thousands, except share data)

	Common Shares			Preferred Shares		Additional Paid-In-Capital			Accumulated Other Comprehensive Income (Loss)			Retained Earnings / (Accumulated Deficit)			Total Gramercy Property Trust			Noncontrolling Interest		Total
	Shares	Par Value
Balance at December 31, 2017	160,686,822	$	1,607	$	84,394	$	4,409,677		$	12,776		$	(1,369,872	)	$	3,138,582		$	221	$	3,138,803
Net income	—	—		—		—			—			27,062			27,062			—		27,062
Cumulative effect of accounting changes	—	—		—		—			103			560			663			—		663
Change in net unrealized gain on derivative instruments	—	—		—		—			22,050			—			22,050			—		22,050
Change in net unrealized loss on debt securities	—	—		—		—			(48		)	—			(48		)	—		(48		)
Reclassification of unrealized gain on terminated derivative instruments into earnings	—	—		—		—			268			—			268			—		268
Offering costs	—	—		—		(39		)	—			—			(39		)	—		(39		)
Share based compensation - fair value	88,094	1		—		2,023			—			—			2,024			—		2,024
Dividend reinvestment program proceeds	1,811	—		—		46			—			—			46			—		46
Conversion of OP Units to common shares	6,038	—		—		130			—			—			130			—		130
Reallocation of noncontrolling interest in the Operating Partnership	—	—		—		(232		)	—			—			(232		)	—		(232		)
Foreign currency translation adjustment	—	—		—		—			518			—			518			—		518
Contributions to noncontrolling interest in other partnerships	—	—		—		—			—			—			—			5		5
Dividends on preferred shares	—	—		—		—			—			(1,559		)	(1,559		)	—		(1,559		)
Dividends on common shares	—	—		—		—			—			(60,607		)	(60,607		)	—		(60,607		)
Balance at March 31, 2018	160,782,765	$	1,608	$	84,394	$	4,411,605		$	35,667		$	(1,404,416	)	$	3,128,858		$	226	$	3,129,084

The accompanying notes are an integral part of these financial statements.

4

Gramercy Property Trust

Consolidated Statements of Cash Flows

(Unaudited, amounts in thousands)

	Three Months Ended March 31,
	2018			2017
Operating Activities:
Net income	$	27,864		$	9,281
Adjustments to net cash provided by operating activities:
Depreciation and amortization	71,516			62,217
Amortization of market lease intangibles	(392		)	(547		)
Amortization of deferred costs	825			615
Amortization of discounts and other fees	(632		)	(409		)
Straight-line rent adjustment	(7,025		)	(7,260		)
Other-than-temporary impairment on retained bonds	—			4,890
Impairment of real estate investments	—			12,771
Net gain on disposals	(16,255		)	(17,377		)
Distributions received from unconsolidated equity investments	—			352
Equity in net loss of unconsolidated equity investments	926			94
Loss on extinguishment of debt	—			208
Amortization of share-based compensation	1,856			2,054
Changes in operating assets and liabilities:
Payment of capitalized leasing costs	(4,526		)	(3,790		)
Tenant and other receivables	3,253			11,707
Other assets	(1,401		)	(4,368		)
Accounts payable and accrued expenses	(8,050		)	(9,755		)
Other liabilities	4,864			(2,204		)
Net cash provided by operating activities	72,823			58,479
Investing Activities:
Capital expenditures	(17,825		)	(18,429		)
Proceeds from sales of real estate	108,032			33,053
Contributions to unconsolidated equity investments	(5,856		)	(2,650		)
Acquisition of real estate	(10,971		)	(99,612		)
Net cash provided by (used in) investing activities	73,380			(87,638		)
Financing Activities:
Proceeds from unsecured term loan and credit facility	164,922			60,000
Repayment of unsecured term loans and credit facility	(230,000		)	(5,000		)
Proceeds from mortgage notes payable	—			2,582
Repayment of mortgage notes payable	(3,545		)	(3,915		)
Offering costs	—			(606		)
Proceeds from sale of common shares	—			20,081
Payment of deferred financing costs	—			(252		)
Preferred share dividends paid	(1,559		)	(1,559		)
Common share dividends paid	(60,568		)	(53,025		)
Distribution to noncontrolling interest in the Operating Partnership	(1,402		)	(118		)
Other financing activities	(138		)	—
Net cash provided by (used in) financing activities	(132,290		)	18,188
Net increase (decrease) in cash, cash equivalents, and restricted cash	13,913			(10,971		)
Increase (decrease) in cash, cash equivalents, and restricted cash related to foreign currency translation	138			(105		)
Cash, cash equivalents, and restricted cash at beginning of period	42,954			80,433
Cash, cash equivalents, and restricted cash at end of period	$	57,005		$	69,357

The accompanying notes are an integral part of these financial statements.

5

GPT Operating Partnership LP

Consolidated Balance Sheets

(Unaudited, amounts in thousands, except unit and per unit data)

	March 31, 2018			December 31, 2017
Assets:
Real estate investments, at cost:
Land	$	1,009,568		$	1,023,908
Building and improvements	4,821,301			4,863,916
Less: accumulated depreciation	(368,815		)	(333,151		)
Total real estate investments, net	5,462,054			5,554,673
Cash and cash equivalents	41,964			30,231
Restricted cash	15,041			12,723
Investment in unconsolidated equity investments	99,113			70,214
Assets held for sale, net	402			402
Tenant and other receivables, net	92,525			88,750
Acquired lease assets, net of accumulated amortization of $241,939 and $220,473	563,213			598,559
Other assets	127,664			100,484
Total assets	$	6,401,976		$	6,456,036
Liabilities and Partners’ Capital:
Liabilities:
Senior unsecured revolving credit facility	$	292,543		$	357,162
Mortgage notes payable, net	559,473			563,521
Senior unsecured notes, net	496,887			496,785
Senior unsecured term loans, net	1,448,241			1,448,152
Total long-term debt, net	2,797,144			2,865,620
Accounts payable and accrued expenses	60,151			59,619
Dividends and distributions payable	62,380			61,971
Below market lease liabilities, net of accumulated amortization of $31,201 and $28,978	159,544			166,491
Other liabilities	55,873			50,002
Total liabilities	$	3,135,092		$	3,203,703
Commitments and contingencies
Limited partner interest in the Operating Partnership (5,388,995 and 4,398,935 limited partner common units outstanding at March 31, 2018 and December 31, 2017, respectively)	137,800			113,530
Partners’ Capital:
Series A cumulative redeemable preferred units, liquidation preference $87,500, and 3,500,000 units issued and outstanding at March 31, 2018 and December 31, 2017	84,394			84,394
GPT partners’ capital (1,658,060 and 1,650,858 general partner common units and 159,124,705 and 159,035,964 limited partner common units outstanding at March 31, 2018 and December 31, 2017, respectively)	3,008,797			3,041,412
Accumulated other comprehensive income	35,667			12,776
Total GPTOP partners' capital	3,128,858			3,138,582
Noncontrolling interest in other entities	226			221
Total partners’ capital	$	3,129,084		$	3,138,803
Total liabilities and partners’ capital	$	6,401,976		$	6,456,036

The accompanying notes are an integral part of these financial statements.

6

GPT Operating Partnership LP

Consolidated Statements of Operations

(Unaudited, amounts in thousands, except unit and per unit data)

	Three Months Ended March 31,
	2018			2017
Revenues
Rental revenue	$	122,245		$	103,282
Operating expense reimbursements	23,310			20,368
Third-party management fees	2,790			4,592
Other income	1,135			1,752
Total revenues	149,480			129,994
Operating Expenses
Depreciation and amortization	71,516			62,217
Property operating expenses	27,088			23,186
General and administrative expenses	9,686			8,756
Property management expenses	2,542			3,084
Total operating expenses	110,832			97,243
Operating income	38,648			32,751
Other Expenses:
Interest expense	(25,492		)	(23,056		)
Other-than-temporary impairment	—			(4,081		)
Portion of impairment recognized in other comprehensive loss	—			(809		)
Net impairment recognized in earnings	—			(4,890		)
Equity in net loss of unconsolidated equity investments	(926		)	(94		)
Loss on extinguishment of debt	—			(208		)
Impairment of real estate investments	—			(12,771		)
Income (loss) from continuing operations before provision for taxes	12,230			(8,268		)
Provision for taxes	(621		)	196
Income (loss) from continuing operations	11,609			(8,072		)
Loss from discontinued operations	—			(24		)
Income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Net income attributable to noncontrolling interest in other partnerships	—			(120		)
Net income attributable to GPTOP	27,864			9,161
Preferred unit distributions	(1,559		)	(1,559		)
Net income available to common unitholders	$	26,305		$	7,602
Basic earnings per unit:
Net income from continuing operations, after preferred unit distributions	$	0.16		$	0.05
Net income from discontinued operations	—			—
Net income available to common unitholders	$	0.16		$	0.05
Diluted earnings per unit:
Net income from continuing operations, after preferred unit distributions	$	0.16		$	0.05
Net income from discontinued operations	—			—
Net income available to common unitholders	$	0.16		$	0.05
Basic weighted average common units outstanding	165,448,866			141,527,985
Diluted weighted average common units outstanding	165,457,630			142,496,205

The accompanying notes are an integral part of these financial statements.

7

GPT Operating Partnership LP

Consolidated Statements of Comprehensive Income (Loss)

(Unaudited, amounts in thousands)

	Three Months Ended March 31,
	2018			2017
Net income	$	27,864		$	9,281
Other comprehensive income (loss):
Unrealized loss on available for sale debt securities	(48		)	(2,820		)
Cumulative effect of accounting change	103			—
Unrealized gain on derivative instruments	22,050			4,378
Reclassification of unrealized gain on terminated derivative instruments into earnings	268			268
Foreign currency translation adjustments	518			691
Other comprehensive income	$	22,891		$	2,517
Comprehensive income	$	50,755		$	11,798
Net income attributable to noncontrolling interest in other partnerships	—			(120		)
Comprehensive income attributable to GPTOP	$	50,755		$	11,678

The accompanying notes are an integral part of these financial statements.

8

GPT Operating Partnership LP

Consolidated Statement of Partners' Capital

(Unaudited, amounts in thousands, except unit data)

	Partners' Interest				Series A Preferred Units		Accumulated Other Comprehensive Income (Loss)			Total GPTOP			Noncontrolling Interest
	Common Units	Common Unitholders													Total
Balance at December 31, 2017	160,686,822	$	3,041,412		$	84,394	$	12,776		$	3,138,582		$	221	$	3,138,803
Net income	—	27,062			—		—			27,062			—		27,062
Cumulative effect of accounting changes	—	560			—		103			663			—		663
Change in net unrealized gain on derivative instruments	—	—			—		22,050			22,050			—		22,050
Change in net unrealized loss on debt securities	—	—			—		(48		)	(48		)	—		(48		)
Reclassification of unrealized gain of terminated derivative instruments into earnings	—	—			—		268			268			—		268
Offering costs	—	(39		)	—		—			(39		)	—		(39		)
Share based compensation - fair value	88,094	2,024			—		—			2,024			—		2,024
Distribution reinvestment program proceeds	1,811	46			—		—			46			—		46
Conversion of OP Units to common units	6,038	130			—		—			130			—		130
Reallocation of limited partner interest in the Operating Partnership	—	(232		)	—		—			(232		)	—		(232		)
Foreign currency translation adjustment	—	—			—		518			518			—		518
Contributions to noncontrolling interest in other partnerships	—	—			—		—			—			5		5
Distributions on preferred units	—	(1,559		)	—		—			(1,559		)	—		(1,559		)
Distributions on common units	—	(60,607		)	—		—			(60,607		)	—		(60,607		)
Balance at March 31, 2018	160,782,765	$	3,008,797		$	84,394	$	35,667		$	3,128,858		$	226	$	3,129,084

The accompanying notes are an integral part of these financial statements.

9

GPT Operating Partnership LP

Consolidated Statements of Cash Flows

(Unaudited, amounts in thousands)

	Three Months Ended March 31,
	2018			2017
Operating Activities:
Net income	$	27,864		$	9,281
Adjustments to net cash provided by operating activities:
Depreciation and amortization	71,516			62,217
Amortization of market lease intangibles	(392		)	(547		)
Amortization of deferred costs	825			615
Amortization of discounts and other fees	(632		)	(409		)
Straight-line rent adjustment	(7,025		)	(7,260		)
Other-than-temporary impairment on retained bonds	—			4,890
Impairment of real estate investments	—			12,771
Gain on sale of properties	(16,255		)	(17,377		)
Distributions received from unconsolidated equity investments	—			352
Equity in net loss of unconsolidated equity investments	926			94
Loss on extinguishment of debt	—			208
Amortization of share-based compensation	1,856			2,054
Changes in operating assets and liabilities:
Payment of capitalized leasing costs	(4,526		)	(3,790		)
Tenant and other receivables	3,253			11,707
Other assets	(1,401		)	(4,368		)
Accounts payable and accrued expenses	(8,050		)	(9,755		)
Other liabilities	4,864			(2,204		)
Net cash provided by operating activities	72,823			58,479
Investing Activities:
Capital expenditures	(17,825		)	(18,429		)
Proceeds from sales of real estate	108,032			33,053
Contributions to unconsolidated equity investments	(5,856		)	(2,650		)
Acquisition of real estate	(10,971		)	(99,612		)
Net cash provided by (used in) investing activities	73,380			(87,638		)
Financing Activities:
Proceeds from unsecured term loan and credit facility	164,922			60,000
Repayment of unsecured term loans and credit facility	(230,000		)	(5,000		)
Proceeds from mortgage notes payable	—			2,582
Repayment of mortgage notes payable	(3,545		)	(3,915		)
Offering costs	—			(606		)
Proceeds from issuance of common units	—			20,081
Payment of deferred financing costs	—			(252		)
Preferred unit distributions paid	(1,559		)	(1,559		)
Common unit distributions paid	(60,568		)	(53,025		)
Distribution to limited partnership interest in the Operating Partnership	(1,402		)	(118		)
Other financing activities	(138		)	—
Net cash provided by (used in) financing activities	(132,290		)	18,188
Net increase (decrease) in cash, cash equivalents, and restricted cash	13,913			(10,971		)
Increase (decrease) in cash, cash equivalents, and restricted cash related to foreign currency translation	138			(105		)
Cash, cash equivalents, and restricted cash at beginning of period	42,954			80,433
Cash, cash equivalents, and restricted cash at end of period	$	57,005		$	69,357

The accompanying notes are an integral part of these financial statements.

10

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

1. Business and Organization

Gramercy Property Trust, or the Company or Gramercy, a Maryland real estate investment trust, or REIT, together with its subsidiary, GPT Operating Partnership LP, or the Operating Partnership, is a leading global investor and asset manager of commercial real estate. Gramercy specializes in acquiring and managing high quality, income producing commercial real estate leased to high quality tenants in major markets in the United States and Europe.

Gramercy earns revenues primarily through rental revenues on properties that it owns in the United States. The Company also owns unconsolidated equity investments in the United States, Europe, and Asia. The Company's operations are conducted primarily through the Operating Partnership. As of March 31, 2018, third-party holders of limited partnership interests owned approximately 3.25% of the Operating Partnership. These interests are referred to as the noncontrolling interests in the Operating Partnership. See Note 11 for more information on the Company’s noncontrolling interests.

As of March 31, 2018, the Company’s wholly-owned portfolio consisted of 362 properties comprising 80,884,942 rentable square feet with 97.3% occupancy. As of March 31, 2018, the Company had ownership interests in 20 properties held in unconsolidated equity investments in the United States and Europe and one property held through the investment in CBRE Strategic Partners Asia. As of March 31, 2018, the Company managed approximately $1,960,000 of commercial real estate assets, including approximately $1,408,000 of assets in Europe.

During the three months endedMarch 31, 2018, the Company acquired one property with 162,056 square feet for a purchase price of approximately $10,550 and placed one development property into service with 126,722 square feet. During the three months endedMarch 31, 2018, the Company sold five properties and one warehouse from another asset aggregating 1,546,091 square feet for total gross proceeds of approximately $111,012.

Unless the context requires otherwise, all references to “Company," "Gramercy,” “we,” “our” and “us” mean Gramercy Property Trust and its subsidiaries, including the Operating Partnership and its consolidated subsidiaries.

2. Significant Accounting Policies

Basis of Quarterly Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In management’s opinion, all adjustments (consisting of normal recurring accruals) considered necessary for fair presentation have been included. The 2018 operating results for the period presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2017 of the Company and the Operating Partnership. The Consolidated Balance Sheets at December 31, 2017 were derived from the audited Consolidated Financial Statements at that date.

11

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Reclassifications

Certain prior year balances have been reclassified to conform with the current year presentation. During the fourth quarter of 2017, the Company adopted Accounting Standards Update, or ASU, No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires restricted cash and cash equivalents to be included with cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown on the Consolidated Statements of Cash Flows. As a result of the adoption, net cash provided by operating activities changed by $235, net cash used in investing activities changed by $(947), and net cash provided by financing activities changed by $909, for the three months endedMarch 31, 2017.

Principles of Consolidation

The Consolidated Financial Statements include the Company’s accounts and those of the Company’s subsidiaries which are wholly-owned or controlled by the Company, or entities which are variable interest entities, or VIEs, in which the Company is the primary beneficiary. The primary beneficiary is the party that absorbs a majority of the VIE’s anticipated losses and/or a majority of the expected returns. The Company has evaluated its investments for potential classification as variable interests by evaluating the sufficiency of each entity’s equity investment at risk to absorb losses.

Entities which the Company does not control and are considered VIEs, but where the Company is not the primary beneficiary, are accounted for under the equity method. All significant intercompany balances and transactions have been eliminated. The equity interests of other limited partners in the Company’s Operating Partnership are reflected as noncontrolling interests. See Note 11 for more information on the Company’s noncontrolling interests.

Real Estate Investments

Real Estate Acquisitions

The Company evaluates its acquisitions of real estate, including equity interests in entities that predominantly hold real estate assets, to determine if the acquired assets meet the definition of a business and need to be accounted for as a business combination, or alternatively, should be accounted for as an asset acquisition. An integrated set of assets and activities acquired does not meet the definition of a business if either (i) substantially all the fair value of the gross assets acquired is concentrated in either a single identifiable asset or a group of similar identifiable assets, or (ii) the asset and activities acquired do not contain at least an input and a substantive process that together significantly contribute to the ability to create outputs. The Company expects that its acquisitions of real estate will continue to not meet the definition of a business.

Acquisitions of real estate that do not meet the definition of a business, including sale-leaseback transactions that have newly-originated leases and real estate investments under construction, or build-to-suit investments, are recorded as asset acquisitions. The accounting for asset acquisitions is similar to the accounting for business combinations, except that the acquisition consideration, including acquisition costs, is allocated to the individual assets acquired and liabilities assumed on a relative fair value basis. Based on this allocation methodology, asset acquisitions do not result in the recognition of goodwill or a bargain purchase. The Company incurs internal transaction costs, which are direct, incremental internal costs related to acquisitions, that are recorded within general and administrative expense. Additionally, for build-to-suit investments in which the Company may engage a developer to construct a property or provide funds to a tenant to develop a property, the Company capitalizes the funds provided to the developer/tenant and real estate taxes, if applicable, during the construction period.

12

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

To determine the fair value of assets acquired and liabilities assumed in an acquisition, which generally include land, building, improvements, and intangibles, such as the value of above- and below-market leases and origination costs associated with the in-place leases at the acquisition date, the Company utilizes various estimates, processes and information to determine the as-if-vacant property value. Estimates of value are made using customary methods, including data from appraisals, comparable sales, and discounted cash flow analyses. Estimates of future cash flows are based on a number of factors including the historical operating results, known trends, and market/economic conditions that may affect the property. The Company assesses the fair value of leases assumed at acquisition based upon estimated cash flow projections that utilize appropriate discount rates and available market information. Refer to the policy section "Intangible Assets and Liabilities" for more information on the Company’s accounting for intangibles.

Depreciation is computed using the straight-line method over the shorter of the estimated useful life at acquisition of the capitalized item or 40 years for buildings, five to ten years for building equipment and fixtures, and the lesser of the useful life or the remaining lease term for tenant improvements and leasehold interests. Maintenance and repair expenditures are charged to expense as incurred.

For transactions that qualify as business combinations, the Company recognizes the assets acquired and liabilities assumed at fair value, including the value of intangible assets and liabilities, and any excess or deficit of the consideration transferred relative to the fair value of the net assets acquired is recorded as goodwill or a bargain purchase gain, as appropriate. Acquisition costs of business combinations are expensed as incurred.

Capital Improvements

In leasing space, the Company may provide funding to the lessee through a tenant allowance. Certain improvements are capitalized when they are determined to increase the useful life of the building. During construction of qualifying projects, the Company capitalizes project management fees as permitted to be charged under the lease, if incremental and identifiable. In accounting for tenant allowances, the Company determines whether the allowance represents funding for the construction of leasehold improvements and evaluates the ownership of such improvements. If the Company is considered the owner of the leasehold improvements, the Company capitalizes the amount of the tenant allowance and depreciates it over the shorter of the useful life of the leasehold improvements or the lease term. If the tenant allowance represents a payment for a purpose other than funding leasehold improvements, or in the event the Company is not considered the owner of the improvements for accounting purposes, the allowance is considered to be a lease incentive and is recognized over the lease term as a reduction of rental revenue.

Impairments and Disposals

The Company reviews the recoverability of a property’s carrying value when circumstances indicate a possible impairment of the value of a property, such as an adverse change in future expected occupancy or a significant decrease in the market price of an asset. The review of recoverability is based on an estimate of the future undiscounted cash flows, excluding interest charges, expected to result from the property’s use and eventual disposition. These estimates consider factors such as changes in strategy resulting in an increased or decreased holding period, expected future operating income, market and other applicable trends and residual value, as well as the effects of leasing demand, competition and other factors. If management determines impairment exists due to the inability to recover the carrying value of a property, for properties to be held and used, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property and for assets held for sale, an impairment loss is recorded to the extent that the carrying value exceeds the fair value less estimated cost of disposal. These assessments are recorded

13

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

as an impairment loss in the Consolidated Statements of Operations in the period the determination is made. The estimated fair value of the asset becomes its new cost basis. For a depreciable long-lived asset to be held and used, the new cost basis will be depreciated or amortized over the remaining useful life of that asset.

The Company recognizes sales of real estate properties upon closing, at which time the Company transfers control of the assets to the purchaser. Payments received from purchasers prior to closing are recorded as deposits. Profit on real estate sold is based on the transaction price and is recognized using the full accrual method upon closing.

Cash, Cash Equivalents, and Restricted Cash

The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. The Company's restricted cash primarily consists of reserves for certain capital improvements, leasing, interest and real estate tax and insurance payments as required by certain mortgage note obligations, as well as proceeds from property sales held by qualified intermediaries to be used for tax-deferred, like-kind exchanges under section 1031 of the Internal Revenue Code of 1986, as amended, or the Internal Revenue Code.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sums to the total of the same such amounts shown in the Consolidated Statements of Cash Flows.

	As of March 31,
	2018		2017
Cash and cash equivalents	$	41,964	$	56,256
Restricted cash	15,041		13,101
Total cash, cash equivalents, and restricted cash	$	57,005	$	69,357

Variable Interest Entities

The Company had five consolidated VIEs and two unconsolidated VIEs as of March 31, 2018 and December 31, 2017, which were determined based on the structure and control provisions of each entity.

The Company’s five consolidated VIEs as of March 31, 2018 and December 31, 2017 included the Operating Partnership and four land parcels in Fort Mill, South Carolina acquired by an investment entity formed in December 2017, on which it will fund the development of fourindustrial facilities, or the Lakemont Development Investment. The Company has a 95.0% interest in the Lakemont Development Investment and will acquire the seller’s retained 5.0% interest when the properties are developed and leased. As of March 31, 2018 and December 31, 2017, the Company’s carrying value of the Lakemont Development Investment was $4,674 and $4,584, respectively.

Unconsolidated VIEs

The Company’s two unconsolidated VIEs as of March 31, 2018 and December 31, 2017 included its retained non-investment grade subordinate bonds, preferred shares and ordinary shares of two collateralized debt obligations, or CDOs, which are collectively herein referred to as the Retained CDO Bonds. Refer to the “Other Assets” section of this Note 2 and also to Note 7 for more information on the accounting and valuation of the Retained CDO Bonds. As of March 31, 2018 and December 31, 2017, the Company’s carrying value of the Retained CDO Bonds was $5,800 and $5,527, respectively.

14

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Tenant and Other Receivables

Tenant and other receivables are derived from rental revenue, tenant reimbursements, and management fees.

Rental revenue is recorded on a straight-line basis over the initial term of the lease. Since many leases provide for rental increases at specified intervals, straight-line basis accounting requires the Company to record a receivable, and include in revenues, unbilled rent receivables that will only be received if the tenant makes all rent payments required through the expiration of the initial term of the lease. Tenant and other receivables also include receivables related to tenant reimbursements for common area maintenance expenses and certain other recoverable expenses that are recognized as revenue in the period in which the related expenses are incurred.

Tenant and other receivables are recorded net of the allowances for doubtful accounts, which as of March 31, 2018 and December 31, 2017 were $670 and $638, respectively. The Company continually reviews receivables related to rent, tenant reimbursements, and management fees, including incentive fees, and determines collectability by taking into consideration the tenant or asset management clients’ payment history, the financial condition of the tenant or asset management client, business conditions in the industry in which the tenant or asset management client operates and economic conditions in the area in which the property or asset management client is located. In the event that the collectability of a receivable is in doubt, the Company increases the allowance for doubtful accounts or records a direct write-off of the receivable, as appropriate.

Intangible Assets and Liabilities

As discussed above in policy section, "Real Estate Acquisitions," the Company follows the acquisition method of accounting for its asset acquisitions and business combinations and thus allocates the purchase price of acquired properties to tangible and identifiable intangible assets acquired based on their respective fair values. Identifiable intangible assets include amounts allocated to acquired leases for above- and below-market lease rates and the value of in-place leases. Management also considers information obtained about each property as a result of its pre-acquisition due diligence.

Above-market and below-market lease values for properties acquired are recorded based on the present value of the difference between the contractual amount to be paid pursuant to each in-place lease and management’s estimate of the fair market lease rate for each such in-place lease, measured over a period equal to the remaining non-cancelable term of the lease. The present value calculation utilizes a discount rate that reflects the risks associated with the leases acquired. The above-market and below-market lease values are amortized as a reduction of and increase to rental revenue, respectively, over the remaining non-cancelable terms of the respective leases. If a tenant terminates its lease prior to its contractual expiration and no future rental payments will be received, any unamortized balance of the market lease intangibles will be written off to rental revenue.

The aggregate value of in-place leases represents the costs of leasing costs, other tenant related costs, and lost revenue that the Company did not have to incur by acquiring a property that is already occupied. Factors considered by management in its analysis of the in-place lease intangibles include an estimate of carrying costs during the expected lease-up period for each property taking into account current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the anticipated lease-up period. Management also estimates costs to execute similar leases including leasing commissions and other related expenses. The value of in-place leases is amortized to

15

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

depreciation and amortization expense over the remaining non-cancelable term of the respective leases. In no event does the amortization period for intangible assets exceed the remaining depreciable life of the building. If a tenant terminates its lease prior to its contractual expiration and no future rental payments will be received, any unamortized balance of the in-place lease intangible will be written off to depreciation and amortization expense.

Above-market and below-market ground rent intangibles are recorded for properties acquired in which the Company is the lessee pursuant to a ground lease assumed at acquisition. The above-market and below-market ground rent intangibles are valued similarly to above-market and below-market leases, except that, because the Company is the lessee as opposed to the lessor, the above-market and below-market ground lease values are amortized as a reduction of and increase to rent expense, respectively, over the remaining non-cancelable terms of the respective leases.

Refer to Note 3 for further information on the Company’s intangible assets and liabilities.

Revenue

Adoption of ASC Topic 606, "Revenue from Contracts with Customers"

The Company adopted ASC Topic 606, which is described below in the section “Recently Issued Accounting Pronouncements,” on January 1, 2018 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under the new guidance, while prior period amounts are not adjusted and continue to be reported in accordance with the historic accounting guidance in ASC Topic 605. As a result of adoption, the Company recorded an increase to its opening retained earnings balance of $663 as of January 1, 2018, which represents the cumulative impact of the new guidance and is related to the Company’s sale of real estate to Strategic Office Partners in 2016. There was no impact to revenues recorded for the three months ended March 31, 2018 as a result of adoption of the new revenue guidance.

Revenue Recognition

The Company recognizes revenue when control of the promised goods or services is transferred to a customer, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company’s primary sources of revenue include rental revenue, third-party management fees, operating expense reimbursements, and other income, which are disaggregated on the Consolidated Statements of Operations and are described in detail below.

Real Estate Investments

Rental revenue from leases on real estate investments is recognized on a straight-line basis over the term of the lease, regardless of when payments are contractually due. For leases on properties that are under construction at the time of acquisition, the Company begins recognition of rental revenue upon completion of construction of the leased asset and delivery of the leased asset to the tenant.

The Company’s lease agreements with tenants also generally contain provisions that require tenants to reimburse the Company for real estate taxes, insurance costs, common area maintenance costs, and other property-related expenses. Under lease arrangements in which the Company is the primary obligor for these expenses, the Company recognizes such amounts as both revenues and operating expenses. Under lease arrangements in which the tenant pays these expenses directly, such amounts are not included in revenues or expenses. These reimbursement amounts are recognized in the period in which the related expenses are incurred.

16

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Management Fees

The Company’s asset and property management agreements may contain provisions for fees related to dispositions, administration of the assets including fees related to accounting, valuation and legal services, and management of capital improvements or projects on the underlying assets. The Company recognizes revenue for fees pursuant to its management agreements in the period in which they are earned. Deferred revenue from management fees received prior to the date earned are included in other liabilities on the Consolidated Balance Sheets. For management fee agreements that include multiple performance obligations, the Company allocates revenue to each performance obligation based on its relative standalone selling price, which is primarily determined based on the prices charged to customers.

Certain of the Company’s asset management contracts and agreements with its unconsolidated equity investments include provisions that allow it to earn additional fees, generally described as incentive fees or promoted interests, based on the achievement of a targeted valuation or the achievement of a certain internal rate of return on the managed assets held by third parties or the equity investment. The Company’s incentive fees are accounted for as variable consideration and revenue is recognized for them based on the Company’s estimate of the expected amount to which it will be entitled in exchange for its services. The Company recognizes promoted interest in the period in which it is determined to be appropriately earned pursuant to the terms of the specific agreement. The values of incentive fees and promoted interest fees are periodically evaluated by management.

Other Income

Other income primarily consists of income accretion on the Company’s Retained CDO Bonds, realized foreign currency exchange gains (losses), and interest income.

Foreign Currency

The Company's European management platform performs asset and property management services in Europe. The Company has unconsolidated equity investments in Europe and Asia and previously had two wholly-owned properties in Canada until their dispositions in March 2017. The Company also has borrowings outstanding in euros and British pounds sterling under the multicurrency portion of its revolving credit facility. Refer to Note 4 for more information on the Company’s foreign unconsolidated equity investments.

Other Assets

The Company includes prepaid expenses, capitalized software costs, contract intangible assets, deferred costs, loan investments, goodwill, derivative assets, and Retained CDO Bonds in other assets.

17

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Loan Investments

The Company may originate loans related to specific real estate development projects. In October 2017, the Company entered into an agreement to provide a mezzanine construction loan facility with a maximum commitment of $250,000 to an industrial developer as borrower. As of March 31, 2018 and December 31, 2017, the carrying value of the Company’s loan investments was $22,437 and $22,154, respectively, which represents the cost, net of accumulated amortization of loan costs. As of March 31, 2018, the loan investments had a weighted average interest rate of 10.47%. The Company evaluates its loan investments for possible credit losses each period. There were no loan reserves recorded during the three months ended March 31, 2018 and all of the Company’s loan investments were performing in accordance with the terms of the relevant investments as of March 31, 2018.

Goodwill

The Company recognized goodwill of $3,802 related to the acquisition of Gramercy Europe Limited, which it adjusts each reporting period for the effect of foreign currency translation adjustments and tests for impairment on an annual basis, or more frequently if events or changes in circumstances indicate that the asset might be impaired. The carrying value of goodwill at March 31, 2018 and December 31, 2017 was $3,394 and $3,272, respectively. The Company did not record any impairment on its goodwill during the three months ended March 31, 2018.

Retained CDO Bonds

The Retained CDO Bonds are non-investment grade subordinate bonds, preferred shares and ordinary shares of two CDOs. Management estimated the timing and amount of cash flows expected to be collected and recognized an investment in the Retained CDO Bonds equal to the net present value of these discounted cash flows. There is no guarantee that the Company will realize any proceeds from this investment, or what the timing will be for the expected remaining life of the Retained CDO Bonds. The Company considers these investments to be not of high credit quality and does not expect a full recovery of interest and principal. Therefore, the Company has suspended interest income accruals on these investments. The Company classifies the Retained CDO Bonds as available for sale. On a quarterly basis, the Company evaluates the Retained CDO Bonds to determine whether significant changes in estimated cash flows or unrealized losses on these investments, if any, reflect a decline in value which is other-than-temporary. If there is a decrease in estimated cash flows and the investment is in an unrealized loss position, the Company will record an other-than-temporary impairment, or OTTI, in the Consolidated Statements of Operations. To determine the component of the OTTI related to expected credit losses, the Company compares the amortized cost basis of the Retained CDO Bonds to the present value of the revised expected cash flows, discounted using the pre-impairment effective yield. Conversely, if the security is in an unrealized gain position and there is a decrease or significant increase in expected cash flows, the Company will prospectively adjust the yield using the effective yield method. Refer to Note 7 for further discussion regarding the fair value measurement of the Retained CDO Bonds. For the three months ended March 31, 2018 and 2017, the Company recognized OTTI on its Retained CDO Bonds of $0 and $4,890, respectively.

A summary of the Company’s Retained CDO Bonds as of March 31, 2018 is as follows:

Number of Securities	Face Value		Amortized Cost		Gross Unrealized Gain		Other-Than-Temporary Impairment		Fair Value		Weighted Average Expected Life (years)
6	$	329,597	$	5,431	$	369	$	—	$	5,800	1.1

18

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash investments, debt investments and accounts receivable. The Company places its cash investments in excess of insured amounts with high quality financial institutions.

Concentrations of credit risk also arise when a number of the Company’s tenants or asset management clients are engaged in similar business activities or are subject to similar economic risks or conditions that could cause their inability to meet contractual obligations to the Company. The Company regularly monitors its portfolio to assess potential concentrations of credit risk. Management believes the current credit risk portfolio is reasonably well diversified. During the three months ended March 31, 2018 and 2017, there were no tenants that accounted for 10.0% or more of the Company's rental revenue. Additionally, for the three months ended March 31, 2018, there were three states, Illinois, Texas, and Florida, that each accounted for 10.0% or more of the Company’s rental revenue.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Recently Issued Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09 (Topic 606), Revenue from Contracts with Customers, which is a comprehensive new revenue recognition model requiring a company to recognize revenue to depict the transfer of goods or services to customers in an amount reflecting the consideration it expects to receive in exchange for those goods or services. In April 2016 and February 2017, the FASB issued ASU 2016-10 and ASU 2017-05, respectively, which further clarified the new revenue recognition guidance under ASC Topic 606. The Company adopted the guidance on January 1, 2018 using the modified retrospective method, which did not have a material impact on its Consolidated Financial Statements. Refer to the “Revenue” section above for further detail.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The guidance requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and to record changes in instruments specific credit risk for financial liabilities measured under the fair value option in other comprehensive income. The update is effective for fiscal years beginning after December 15, 2017, and for interim periods therein. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements. Refer to Note 8 for more information.

In February 2016, the FASB issued ASU 2016-02, Leases, which amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The update will be effective beginning in the first quarter of 2019 and early adoption is permitted. The new standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company’s accounting for leases in which it is a lessor, which represents most of its leasing arrangements, will be largely unchanged under ASU 2016-02; however, the Company is a lessee in several operating and ground leases and the accounting for these arrangements is more significantly impacted by the new standard. Pursuant to the new guidance, lessees are required

19

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. The Company is continuing to evaluate the impact of adopting the new leases standard on its Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows Classification of Certain Cash Receipts and Cash Payments, which serves to reduce the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The update is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, with early adoption permitted. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements.

In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation: Scope of Modification Accounting. The amendment provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. The guidance is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted under certain circumstances. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities. The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The transition guidance provides companies with the option of early adopting the new standard using a modified retrospective transition method in any interim period after issuance of the update, or alternatively requires adoption for fiscal years beginning after December 15, 2018. In the first quarter of 2018, the Company early adopted this standard and the adoption did not have a material impact on its Consolidated Financial Statements.

3. Real Estate Investments

Investments in real estate properties consisted of the following:

	March 31, 2018					December 31, 2017
	Square feet1	Number of properties	Investment			Square feet1	Number of properties	Investment
Operating properties2	80,884,942	360	$	5,811,702		82,146,063	363	$	5,857,906
Land parcels		2	7,075				2	7,075
Less accumulated depreciation			(368,815		)			(333,151		)
Total operating properties and land parcels			$	5,449,962				$	5,531,830
Development properties	1,503,300	5	12,092			1,630,022	6	22,843
Total	82,388,242	367	$	5,462,054		83,776,085	371	$	5,554,673

1. Represents rentable square feet for operating properties and projected rentable square feet upon completion for development properties.

2. Includes development properties that have been completed as of the end of the period.

20

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Acquisitions:

Real estate acquisition activity for the three months ended March 31, 2018 and 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
Number of operating properties	1		7
Rentable square feet of operating properties	162,056		2,257,311
Total purchase price of all acquisitions	$	10,550	$	124,672

The total value of the properties acquired during the three months ended March 31, 2018 was comprised of $10,197 of real estate assets and $635 of intangible assets, including acquisition costs capitalized for the asset acquisitions. In addition to the operating property acquisition noted above, during the three months ended March 31, 2018 the Company also placed into service one development property which comprised 126,722 rentable square feet.

Dispositions:

Real estate disposition activity for the three months ended March 31, 2018 and 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
Number of properties1	5		7
Rentable square feet	1,546,091		487,872
Gross proceeds	$	111,012	$	51,683
Impairment of real estate investments related to asset dispositions during the period2	$	—	$	—
Net gain on disposals	$	16,255	$	17,377

1. During the three months ended March 31, 2018, the Company sold five properties and one warehouse from another asset.

2. Although there were no impairments recognized related to assets disposed during the three months ended March 31, 2018 and 2017, as presented in the table, the Company recognized impairments on real estate investments of $12,771 during the three months ended March 31, 2017 related to properties held as of March 31, 2017, for which the Company determined there were nonrecoverable declines in value.

21

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Intangibles:

Intangible assets and liabilities consisted of the following:

	Weighted average amortization period (years)	March 31, 2018		December 31, 2017
Intangible assets:
In-place leases, net of accumulated amortization of $214,664 and $194,836	9.3	$	513,423	$	545,782
Above-market leases, net of accumulated amortization of $26,854 and $25,229	6.8	43,979		46,713
Below-market ground rent, net of accumulated amortization of $421 and $408	17.5	5,811		6,064
Total intangible assets		$	563,213	$	598,559
Intangible liabilities:
Below-market leases, net of accumulated amortization of $30,685 and $28,516	39.5	$	152,758	$	159,652
Above-market ground rent, net of accumulated amortization of $516 and $462	32.0	6,786		6,839
Total intangible liabilities		$	159,544	$	166,491

The following table provides the projected amortization expense of the intangible assets and liabilities for the next five years:

	April 1 to December 31, 2018			2019			2020			2021			2022
Depreciation and amortization expense	$	70,211		$	84,228		$	70,822		$	59,528		$	46,652
Rental revenue increase	$	(1,571	)	$	(2,520	)	$	(4,004	)	$	(4,168	)	$	(6,260	)

The Company recorded $26,159 and $24,172of amortization of in-place lease intangible assets as part of depreciation and amortization expense for the three months ended March 31, 2018 and 2017, respectively. The Company recorded $494 and $621of amortization of market lease intangible assets and liabilities as an increase to rental revenue for the three months ended March 31, 2018 and 2017, respectively.

Assets Held for Sale

In the normal course of business, the Company identifies non-strategic assets for sale. The Company separately classifies properties held for sale in its Consolidated Financial Statements. As of March 31, 2018 and December 31, 2017, the Company had one asset classified as held for sale, which had a net asset value of $402, all of which represented the value contained in real estate investments. Real estate investments to be disposed of are reported at the lower of carrying amount or estimated fair value, less costs to sell. Once an asset is classified as held for sale, depreciation and amortization expense is no longer recorded.

22

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Discontinued Operations

The Company did not have significant discontinued operations for the three months ended March 31, 2018. The Company’s discontinued operations for the three months ended March 31, 2017 were related to the assets assumed in the Company’s merger transaction in 2015 and simultaneously designated as held for sale.

4. Unconsolidated Equity Investments

The Company has investments in a variety of ventures. The Company will co-invest in entities that own multiple properties with various investors or with one partner. The Company may manage the ventures and earn fees, such as asset and property management fees, incentive fees, and promoted interest for its services, or one of the other partners will manage the ventures for similar such fees. Depending on the structure of the venture, the Company’s voting interest may be different than its economic interest.

The Company accounts for substantially all of its unconsolidated equity investments under the equity method of accounting because it exercises significant influence, but does not unilaterally control the entities, and is not considered to be the primary beneficiary. In unconsolidated equity investments, the rights of the other investors are protective and participating. Unless the Company is determined to be the primary beneficiary, these rights preclude it from consolidating the investments. The investments are recorded initially at cost as unconsolidated equity investments, as applicable, and subsequently are adjusted for equity interest in net income and contributions and distributions. The amount of the investments on the Consolidated Balance Sheets is evaluated for impairment at each reporting period. None of the unconsolidated equity investment debt is recourse to the Company. Transactions with unconsolidated equity method entities are eliminated to the extent of the Company’s ownership in each such entity. Accordingly, the Company’s share of net income of these equity method entities is included in consolidated net income.

As of March 31, 2018 and December 31, 2017, the Company owned properties through unconsolidated equity investments and had investment interests in these unconsolidated entities as follows:

	As of March 31, 2018								As of December 31, 2017
Investment	Ownership %		Voting Interest %		Partner	Investment in Unconsolidated Equity Investment 1		No. of Properties	Investment in Unconsolidated Equity Investment 1		No. of Properties
Strategic Office Partners	25.0	%	25.0	%	TPG Real Estate	$	28,792	13	$	28,243	13
E-Commerce JV	51.0	%	50.0	%	Ample Glow Investments	43,502		2	17,798		—
Goodman UK JV	80.0	%	50.0	%	Goodman Group	15,980		1	15,768		1
Gramercy European Property Fund III	19.9	%	50.0	%	Various	5,363		2	2,949		—
Other2	5.1% - 50.0%		5.1% - 50.0%		Various	5,476		3	5,456		3
Total						$	99,113	21	$	70,214	17

1. The amounts presented include a basis difference of $2,011 and $1,943, net of accumulated amortization, for the Goodman UK JV as of March 31, 2018 and December 31, 2017, respectively. The amounts presented include a basis difference of $(3,916), net of accumulated amortization, for the E-Commerce JV as of March 31, 2018.

2. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

23

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The following is a summary of the Company’s unconsolidated equity investments for the three months endedMarch 31, 2018:

	Unconsolidated Equity Investments
Balance at January 1, 2018	$	70,214
Contributions to unconsolidated equity investments	28,731
Equity in net loss of unconsolidated equity investments, including adjustments for basis differences	(926		)
Other comprehensive income of unconsolidated equity investments	431
Cumulative effect of accounting change	663
Balance at March 31, 2018	$	99,113

Strategic Office Partners

In August 2016, the Company partnered with TPG Real Estate, or TPG, to form Strategic Office Partners, an unconsolidated equity investment created for the purpose of acquiring, owning, operating, leasing and selling single-tenant office properties located in high-growth metropolitan areas in the United States. The Company provides asset and property management, accounting, construction, and leasing services to Strategic Office Partners, for which it earns management fees and is entitled to a promoted interest. TPG and the Company have committed an aggregate $400,000 to Strategic Office Partners, including $100,000 from the Company. During the three months ended March 31, 2018, the Company did not make any contributions to or receive any distributions from Strategic Office Partners.

E-Commerce JV

In November 2017, the Company formed a joint venture with an investment partner, which will acquire, own and manage Class A distribution centers leased to leading e-commerce tenants on long-term leases across the United States, or the E-Commerce JV. The Company has joint control over the E-Commerce JV, which is shared equally with its investment partner. The Company provides asset and property management and accounting services to the E-Commerce JV, for which it earns management fees. The Company has committed capital to fund its initial acquisition of six properties, as well as the acquisition of additional properties in the future, subject to the partners' approval. The Company's pro rata funding commitment for the initial six properties is estimated at approximately $110,000, of which approximately $80,000 will be funded in OP Units issued to the seller of the property and approximately $30,000 will be funded in cash. During the three months ended March 31, 2018, the E-Commerce JV acquired two properties. During the three months ended March 31, 2018, the Company contributed $1,130in cash and OP Units valued at approximately $25,141 to the E-Commerce JV.

Goodman UK JV

The Goodman UK JV invests in industrial properties in the United Kingdom. During the three months ended March 31, 2018 and 2017, the Company received no distributions from the Goodman UK JV.

24

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

European Investment Funds

Gramercy European Property Fund III

In October 2017, the Company formed a new European investment fund with several other equity investment partners, or the Gramercy European Property Fund III, which has total initial capital commitments of $323,359 (€262,622) from all investors, of which the Company’s initial capital commitment is $64,257 (€52,187), representing an interest of approximately 19.9%. The Company provides asset and property management and accounting services to the Gramercy European Property Fund III, for which it is entitled to management fees and a promoted interest. During the three months ended March 31, 2018, the Gramercy European Property Fund III acquired two properties. During the three months ended March 31, 2018, the Company contributed $2,460 (€1,977) to the Gramercy European Property Fund III.

Gramercy European Property Fund

In July 2017, the Gramercy European Property Fund sold 100.0% of its assets to a third party, and, concurrently, the Company sold its 5.1% direct interest in the Goodman Europe JV to the same entity that acquired the Gramercy European Property Fund's assets. In connection with the sale transactions, the Company's management contract arrangement with the Gramercy European Property Fund was terminated; however, the Company continues to manage the assets for the new owner through June 2018.

The following are the balance sheets for the Company’s unconsolidated equity investments at March 31, 2018:

	Strategic Office Partners		E-Commerce JV		Goodman UK JV		Gramercy European Property Fund III		Other1
Assets:
Real estate assets, net2	$	264,099	$	149,895	$	19,150	$	62,284	$	108,993
Other assets	80,897		48,894		1,751		5,428		18,421
Total assets	$	344,996	$	198,789	$	20,901	$	67,712	$	127,414
Liabilities and members' equity:
Mortgage notes payable	$	213,699	$	108,473	$	—	$	35,873	$	38,341
Other liabilities	16,698		5,018		732		4,850		19,043
Total liabilities	230,397		113,491		732		40,723		57,384
Company's equity	28,792		43,502		15,980		5,363		5,476
Other members' equity	85,807		41,796		4,189		21,626		64,554
Liabilities and members' equity	$	344,996	$	198,789	$	20,901	$	67,712	$	127,414

1. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

2. Includes basis adjustments recorded by the Company to adjust the unconsolidated equity investments to fair value.

25

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The following are the balance sheets for the Company’s unconsolidated equity investments at December 31, 2017:

	Strategic Office Partners		E-Commerce JV		Goodman UK JV		Other1
Assets:
Real estate assets, net2	$	265,014	$	—	$	18,633	$	107,949
Other assets	78,243		35,727		1,473		34,022
Total assets	$	343,257	$	35,727	$	20,106	$	141,971
Liabilities and members' equity:
Mortgage notes payable	$	213,205	$	—	$	—	$	38,662
Other liabilities	15,002		830		203		19,329
Total liabilities	228,207		830		203		57,991
Company's equity	28,243		17,798		15,768		8,405
Other members' equity	86,807		17,099		4,135		75,575
Liabilities and members' equity	$	343,257	$	35,727	$	20,106	$	141,971

1. Includes CBRE Strategic Partners Asia, the Philips JV, the Morristown JV, and the Gramercy European Property Fund III.

2. Includes basis adjustments recorded by the Company to adjust the unconsolidated equity investments to fair value.

Certain real estate assets in the Company’s unconsolidated equity investments are subject to mortgage notes. The following is a summary of the secured financing arrangements within the Company’s unconsolidated equity investments as of March 31, 2018:

					Outstanding Balance2
Property	Unconsolidated Equity Investment	Economic Ownership	Interest Rate1	Maturity Date	March 31, 2018			December 31, 2017
Strategic Office Partners Facility 13	Strategic Office Partners	25.0%	4.70%	10/7/2019	$	169,380		$	169,380
Strategic Office Partners Facility 24	Strategic Office Partners	25.0%	9.21%	10/8/2020	39,540			39,540
E-Commerce JV Facility4	E-Commerce JV	51.0%	3.38%	2/10/2023	109,846			—
Gramercy European Property Fund III Facility4	Gramercy European Property Fund III	19.9%	1.57%	3/12/2023	36,084			—
Henderson, NV	Strategic Office Partners	25.0%	4.75%	8/6/2025	8,593			8,636
Somerset, NJ	Philips JV	25.0%	6.90%	9/11/2035	38,341			38,662
Total mortgage notes payable					$	401,784		$	256,218
Net deferred financing costs and net debt discount					(5,398		)	(4,351		)
Total mortgage notes payable, net					$	396,386		$	251,867

1. Represents the current effective rate as of March 31, 2018, including the swapped interest rate for mortgage notes that have interest rate swaps. The current interest rate is not adjusted to include the amortization of fair market value premiums or discounts.

2. Mortgage notes are presented at 100.0% of the amount held by the unconsolidated equity investment.

3. As of March 31, 2018, there were ten properties under this mortgage note.

4. As of March 31, 2018, there were two properties under each of these mortgage notes.

26

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The following are the statements of operations for the Company’s unconsolidated equity investments for the three months ended March 31, 2018:

	Strategic Office Partners			E-Commerce JV			Goodman UK JV			Gramercy European Property Fund III			Other1
Revenues	$	11,143		$	2,165		$	—		$	482		$	1,994
Operating expenses	4,151			583			260			682			106
Interest expense	3,113			669			—			97			666
Depreciation and amortization	4,823			862			206			209			333
Total expenses	12,087			2,114			466			988			1,105
Net income (loss) from operations	(944		)	51			(466		)	(506		)	889
Gain on derivatives	492			—			—			—			—
Loss on extinguishment of debt	—			(1,200		)	—						—
Net income (loss)	$	(452	)	$	(1,149	)	$	(466	)	$	(506	)	$	889
Company's share in net income (loss)	$	26		$	(520	)	$	(373	)	$	(93	)	$	20
Adjustments for REIT basis	—			18			(4		)	—			—
Company's equity in net income (loss) within continuing operations	$	26		$	(502	)	$	(377	)	$	(93	)	$	20

1. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

The following are the statements of operations for the Company’s unconsolidated equity investments for the three months ended March 31, 2017:

	Gramercy European Property Fund 1
	Goodman Europe JV			Gramercy European Property Fund2		Total			Strategic Office Partners			Goodman UK JV			Other 3
Revenues	$	4,955		$	10,118	$	15,073		$	5,526		$	295		$	(1,331	)
Operating expenses	922			2,951		3,873			1,474			302			576
Interest expense	672			1,474		2,146			1,510			—			641
Depreciation and amortization	2,021			4,473		6,494			2,503			375			333
Total expenses	3,615			8,898		12,513			5,487			677			1,550
Net income (loss) from operations	1,340			1,220		2,560			39			(382		)	(2,881		)
Gain (loss) on derivatives	—			1,221		1,221			(349		)	—			—
Provision for taxes	(17		)	146		129			—			(8		)	—
Net income (loss)	$	1,323		$	2,587	$	3,910		$	(310	)	$	(390	)	$	(2,881	)
Company’s share in net income (loss)	$	67		$	446	$	513		$	(15	)	$	(312	)	$	(155	)
Adjustments for REIT basis	(36		)	—		(36		)	—			(89		)	—
Company’s equity in net income (loss) within continuing operations	$	31		$	446	$	477		$	(15	)	$	(401	)	$	(155	)

1. As of and for the three months ended March 31, 2017, the Company had a 5.1% direct interest in the Goodman Europe JV as well as an indirect interest in the remaining 94.9% interest that was held through the Company’s 14.2% interest in the Gramercy European Property Fund. For the three months ended March 31, 2017, the Company’s equity in net income (loss) from the entities is based on these ownership interest percentages during the period.

2. Excludes the results of the Gramercy European Property Fund’s 94.9% interest in the Goodman Europe JV, as the Goodman Europe JV is separately presented.

3. Includes CBRE Strategic Partners Asia, the Philips JV, the Morristown JV, and European Fund Carry Co.

27

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

5. Debt Obligations

Secured Debt

Mortgage Notes

Certain real estate assets are subject to mortgage notes. During the three months endedMarch 31, 2018, the Company did not assume or pay off any mortgages notes. During the year ended December 31, 2017, the Company assumed $181,107 of non-recourse mortgages in connection with seven real estate acquisitions. During the three months ended March 31, 2017, the Company refinanced the debt on two properties encumbered by a mortgage note, subsequently transferred the mortgage on these two properties to the buyer of the properties, and, as a result, recorded a net loss on the early extinguishment of debt of $208. The Company’s mortgage notes include a series of financial and other covenants with which the Company must comply in order to borrow under them. The Company was in compliance with the covenants under the mortgage note facilities as of March 31, 2018.

28

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The following is a summary of the Company’s secured financing arrangements as of March 31, 2018 and December 31, 2017:

Property	Interest Rate 1	Maturity Date	Outstanding Balance
			March 31, 2018		December 31, 2017
Greenwood, IN	3.59%	6/15/2018	$	7,211	$	7,257
Greenfield, IN	3.63%	6/15/2018	5,828		5,865
Logistics Portfolio - Pool 32	3.96%	8/1/2018	43,302		43,302
Philadelphia, PA	4.99%	1/1/2019	11,842		11,943
Bridgeview, IL	3.90%	5/1/2019	5,792		5,838
Spartanburg, SC	3.20%	6/1/2019	530		632
Charleston, SC	3.11%	8/1/2019	320		457
Lawrence, IN	5.02%	1/1/2020	19,896		20,061
Charlotte, NC	3.28%	1/1/2020	1,363		1,538
Hawthorne, CA	3.52%	8/1/2020	17,042		17,207
Charleston, SC	3.32%	10/1/2020	696		758
Charleston, SC	2.97%	10/1/2020	684		746
Charleston, SC	3.37%	10/1/2020	684		746
Charlotte, NC	3.38%	10/1/2020	594		647
Des Plaines, IL	5.54%	10/31/2020	2,365		2,385
Waco, TX	4.75%	12/19/2020	14,815		14,890
Deerfield, IL	3.71%	1/1/2021	10,355		10,447
Winston-Salem, NC	3.41%	6/1/2021	3,135		3,354
Winston-Salem, NC	3.42%	7/1/2021	1,043		1,114
Logistics Portfolio - Pool 12	4.27%	1/1/2022	37,856		38,107
CCC Portfolio2	4.24%	10/6/2022	22,691		22,814
Logistics Portfolio - Pool 42	4.36%	12/5/2022	79,500		79,500
Romeoville, IL	3.80%	4/6/2023	24,835		24,951
Romeoville, IL3	9.37%	4/6/2023	6,613		6,623
KIK USA Portfolio2	4.31%	7/6/2023	7,077		7,154
Yuma, AZ	5.27%	12/6/2023	11,804		11,858
Allentown, PA	5.16%	1/6/2024	22,586		22,690
Spartanburg, SC	3.72%	2/1/2024	5,447		5,635
Natick, MA	5.21%	3/1/2024	31,121		31,224
Natick, MA3	10.38%	3/1/2024	3,458		3,469
Maple Grove, MN	3.88%	5/6/2024	16,291		16,380
Curtis Bay, MD	4.31%	7/1/2024	13,500		13,500
Rialto, CA	3.91%	8/1/2024	54,543		54,741
Houston, TX	3.68%	9/1/2024	26,000		26,000
Durham, NC	4.02%	9/6/2024	3,614		3,631
Charleston, SC	3.80%	2/1/2025	5,831		6,001
Hackettstown, NJ	5.49%	3/6/2026	9,420		9,455
Hutchins, TX	5.41%	6/1/2029	21,269		21,578
Total mortgage notes payable			$	550,953	$	554,498
Net deferred financing costs and net debt premium			8,520		9,023
Total mortgage notes payable, net			$	559,473	$	563,521

1. Represents the interest rate as of March 31, 2018 that was recorded for financial reporting purposes, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

2. As of March 31, 2018, there were two properties under the Logistics Portfolio - Pool 3 mortgage, three properties under the Logistics Portfolio - Pool 1 mortgage, five properties under the CCC Portfolio mortgage, six properties under the Logistics Portfolio - Pool 4 mortgage, and three properties under the KIK USA Portfolio mortgage.

3. Mortgage notes represent mezzanine financing at the properties.

29

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Unsecured Debt

2015 Credit Facility and Term Loans

In December 2015, the Company entered into an agreement, or the Credit Agreement, for a new $1,900,000 credit facility, or the 2015 Credit Facility, consisting of an $850,000 senior unsecured revolving credit facility, or the 2015 Revolving Credit Facility, and $1,050,000 term loan facility with JPMorgan Securities LLC and Merrill Lynch, Pierce, Fenner and Smith Incorporated. The 2015 Revolving Credit Facility consists of a $750,000 U.S. dollar revolving credit facility and a $100,000 multicurrency revolving credit facility. The 2015 Revolving Credit Facility matures in January 2020, but may be extended for two additional six-month periods upon the payment of applicable fees and satisfaction of certain customary conditions. The term loan facility, or the 2015 Term Loan, consists of a $300,000 term loan facility that matures in January 2019 with one 12-month extension option, or the 3-Year Term Loan, and a $750,000 term loan facility that matures in January 2021, or the 5-Year Term Loan. In December 2015, the Company also entered into a new $175,0007-year unsecured term loan with Capital One, N.A, or the 7-Year Term Loan, which matures in January 2023. In October 2017, the Company modified the 7-Year Term Loan by increasing the loan amount to $400,000 and reducing the interest rate to the terms described below.

Outstanding borrowings under the 2015 Revolving Credit Facility incur interest at a floating rate based upon, at the Company's option, either (i) adjusted LIBOR plus an applicable margin ranging from 0.88% to 1.55%, depending on the Company's credit ratings, or (ii) the alternate base rate plus an applicable margin ranging from 0.00% to 0.55%, depending on the Company's credit ratings. The Company is also required to pay quarterly in arrears a 0.13% to 0.30% facility fee, depending on its credit ratings, on the total commitments under the 2015 Revolving Credit Facility. Outstanding borrowings under the 2015 Term Loan and the 7-Year Term Loan incur interest at a floating rate based upon, at the Company's option, either (i) adjusted LIBOR plus an applicable margin ranging from 0.90% to 1.75%, depending on the Company's credit ratings, or (ii) the alternate base rate plus an applicable margin ranging from 0.00% to 0.75%, depending on the Company's credit ratings. The alternate base rate for the 2015 Revolving Credit Facility and the 7-Year Term Loan is the greater of (x) the prime rate announced by JPMorgan Chase Bank, N.A. or Capital One, respectively, (y) 0.50% above the Federal Funds Effective Rate, and (z) the adjusted LIBOR for a one-month interest period plus 1.00%.

The Company’s unsecured borrowing facilities include a series of financial and other covenants with which the Company must comply in order to borrow under the facilities. The Company was in compliance with the covenants under the facilities as of March 31, 2018. Refer to the table at the end of this Note 5 for specific terms and the Company’s outstanding borrowings under the facilities.

Senior Unsecured Notes

During 2015 and 2016, the Company issued and sold an aggregate $500,000 principal amount of senior unsecured notes payable in private placements, which have maturities ranging from 2022 through 2026 and bear interest semiannually at rates ranging from 3.89% to 4.97%. Refer to the table later in Note 5 for specific terms of the Company's Senior Unsecured Notes.

Exchangeable Senior Notes

In September 2017, the Company's $115,000 of 3.75% Exchangeable Senior Notes were exchanged for 5,258,420 of the Company's common shares.

30

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The terms of the Company’s unsecured debt obligations and outstanding balances as of March 31, 2018 and December 31, 2017 are set forth in the table below:

	Stated Interest Rate		Effective Interest Rate 1		Maturity Date	Outstanding Balance
						March 31, 2018			December 31, 2017
2015 Revolving Credit Facility - USD tranche	2.89	%	2.89	%	1/8/2020	$	275,000		$	345,000
2015 Revolving Credit Facility - Multicurrency tranche	1.32	%	1.32	%	1/8/2020	17,543			12,162
3-Year Term Loan	2.91	%	2.33	%	1/8/2019	300,000			300,000
5-Year Term Loan	2.91	%	2.70	%	1/8/2021	750,000			750,000
7-Year Term Loan	2.76	%	3.00	%	1/9/2023	400,000			400,000
2015 Senior Unsecured Notes	4.97	%	5.07	%	12/17/2024	150,000			150,000
2016 Senior Unsecured Notes	3.89	%	4.00	%	12/15/2022	150,000			150,000
2016 Senior Unsecured Notes	4.26	%	4.38	%	12/15/2025	100,000			100,000
2016 Senior Unsecured Notes	4.32	%	4.43	%	12/15/2026	100,000			100,000
Total unsecured debt						2,242,543			2,307,162
Net deferred financing costs and net debt discount						(4,872		)	(5,063		)
Total unsecured debt, net						$	2,237,671		$	2,302,099

1. Represents the rate at which interest expense is recorded for financial reporting purposes as of March 31, 2018, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

Combined aggregate principal maturities of the Company’s unsecured debt obligations and non-recourse mortgages, in addition to associated interest payments, as of March 31, 2018 are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Above market interest		Total
2015 Revolving Credit Facility	$	—	$	—	$	292,543	$	—	$	—	$	—	$	—	$	292,543
Term Loans	—		300,000		—		750,000		—		400,000		—		1,450,000
Mortgage Notes Payable 1	66,599		30,450		62,834		19,256		141,929		229,885		—		550,953
Senior Unsecured Notes	—		—		—		—		150,000		350,000		—		500,000
Interest Payments 2	82,144		97,025		87,135		57,199		53,364		64,772		3,648		445,287
Total	$	148,743	$	427,475	$	442,512	$	826,455	$	345,293	$	1,044,657	$	3,648	$	3,238,783

1. Mortgage note payments reflect accelerated repayment dates, when applicable, pursuant to the related agreement.

2. Interest payments do not reflect the effect of interest rate swaps.

6. Transactions with Trustee Related Entities and Related Parties

The Company’s CEO, Gordon F. DuGan, was on the board of directors of the Gramercy European Property Fund prior to its sale in July 2017 and committed and fully funded approximately $1,388 (€1,250) in capital to the Gramercy European Property Fund. The two Managing Directors of Gramercy Europe Limited collectively committed and fully funded approximately $1,388 (€1,250) in capital to the Gramercy European Property Fund prior to the sale of its assets in July 2017.

31

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

7. Fair Value Measurements

ASC 820-10, “Fair Value Measurements and Disclosures,” provides guidance on the fair value measurement of a financial asset or liability. Inputs used to develop fair value measurements are classified into one of three categories: Level I, defined as observable inputs such as quoted prices in active markets for identical assets or liabilities; Level II, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level III, defined as unobservable inputs for which there is little or no market or pricing data, thus requiring management to use its judgment and develop its own assumptions.

The following table presents the carrying value in the financial statements and approximate fair value of assets and liabilities measured on a recurring and non-recurring basis at March 31, 2018 and December 31, 2017:

	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
Interest rate swaps	$	41,888	$	41,888	$	19,668	$	19,668
Retained CDO Bonds	5,800		5,800		5,527		5,527
Real estate investments1	—		—		87,996		87,996
Investment in CBRE Strategic Partners Asia	2,869		2,869		2,820		2,820
Loan investments2	22,437		20,990		22,154		21,362
Financial liabilities:
Interest rate swaps	$	13	$	13	$	173	$	173
Long-term debt:
2015 Revolving Credit Facility2	292,543		292,492		357,162		357,369
3-Year Term Loan2	300,000		300,090		300,000		300,091
5-Year Term Loan2	750,000		750,653		750,000		750,678
7-Year Term Loan2	398,241		400,020		398,152		400,010
Mortgage notes payable2	559,473		565,329		563,521		573,826
Senior Unsecured Notes2	496,887		502,349		496,785		513,229

1. Amount represents seven real estate investments that were impaired by the Company and held as of December 31, 2017.

2. Long-term debt instruments are classified as Level III due to the significance of unobservable inputs which are based upon management assumptions.

The following methods and assumptions were used to estimate the fair value of each class of assets and liabilities for which it is practicable to estimate the value:

Cash and cash equivalents, marketable securities, accrued interest, and accounts payable:These balances in the Consolidated Financial Statements reasonably approximate their fair values due to the items’ short maturities.

Loan investments: Loan investments are presented in other assets on the Consolidated Financial Statements at amortized cost and not fair value. The fair value of each investment is estimated by a discounted cash flow model, using discount rates that best reflect current market rates for financings with similar characteristics and credit quality.

Mortgage notes payable, unsecured term loans, unsecured revolving credit facilities and senior unsecured notes: These instruments are presented in the Consolidated Financial Statements at amortized cost and not at fair

32

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

value. The fair value of each instrument is estimated by a discounted cash flows model, using discount rates that best reflect current market rates for financings with similar characteristics and credit quality.

Retained CDO Bonds, investment in CBRE Strategic Partners Asia, real estate investments, and interest rate swaps: Refer to section below, “Valuation of Level III Instruments,” for valuation methods and assumptions used for these Level III assets and liabilities measured at fair value in the Consolidated Financial Statements.

The following discussion of fair value was determined by the Company using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, fair values are not necessarily indicative of the amounts the Company could realize on disposition of the assets or liabilities. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

Assets and liabilities measured at fair value on a recurring and non-recurring basis are categorized as follows:

At March 31, 2018	Total			Level I		Level II		Level III
Financial Assets:
Retained CDO Bonds	$	5,800		$	—	$	—	$	5,800
Investment in CBRE Strategic Partners Asia	2,869			—		—		2,869
Interest rate swaps	41,888			—		—		41,888
	$	50,557		$	—	$	—	$	50,557
Financial Liabilities:
Interest rate swaps	$	(13	)	$	—	$	—	$	(13	)
	$	(13	)	$	—	$	—	$	(13	)

At December 31, 2017	Total			Level I		Level II		Level III
Financial Assets:
Retained CDO Bonds	$	5,527		$	—	$	—	$	5,527
Real estate investments	87,996			—		—		87,996
Investment in CBRE Strategic Partners Asia	2,820			—		—		2,820
Interest rate swaps	19,668			—		—		19,668
	$	116,011		$	—	$	—	$	116,011
Financial Liabilities:
Interest rate swaps	$	(173	)	$	—	$	—	$	(173	)
	$	(173	)	$	—	$	—	$	(173	)

Valuation of Level III Instruments

Retained CDO Bonds:Retained CDO Bonds are valued on a recurring basis using an internally developed discounted cash flow models, which require significant assumptions and judgment. The models are most sensitive to the unobservable inputs such as the amount of the recoveries of the underlying securities.

Investment in CBRE Strategic Partners Asia: The Company's investment in CBRE Strategic Partners Asia is based on the Level III valuation inputs applied by the investment manager of CBRE Strategic Partners Asia, utilizing a mix of different approaches for valuing the underlying real estate related investments within the investment company.

33

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The valuations are most sensitive to the unobservable inputs of discount rates, as well as capitalization rates an expected future cash flows.

Real estate investments: Real estate investments impaired during a period are reported at estimated fair value and real estate investments impaired during a period that are classified as held for sale as of the end of the period are reported at estimated fair value less costs to sell. The fair value of real estate investments and their related lease intangibles is determined using third-party valuation support, including purchase-sale contracts and other available market information. Key assumptions in the valuations, to which the fair value determinations are most sensitive, include discount and capitalization rates as well as expected future cash flows.

Interest rate swaps: The Company's derivative instruments as of March 31, 2018 and December 31, 2017 consist of interest rate swaps, which are valued with the assistance of a third-party derivative specialist using a discounted cash flow model, that requires a combination of observable market-based inputs, such as interest rate curves, and unobservable inputs which require significant judgment such as the credit valuation adjustments due to the risk of nonperformance by both the Company and its counterparties. The most significant unobservable input in the fair valuation of interest rate swaps is the credit valuation adjustment as it requires significant management judgment regarding changes in the credit risk of the Company or its counterparties, however the primary driver of the fair value of the interest rate swaps is the forward interest rate curve.

Fair Value on a Recurring Basis

Quantitative information regarding the valuation techniques and the range of significant unobservable Level III inputs used to determine fair value measurements on a recurring basis as of March 31, 2018 are as follows:

Financial Asset (Liability)	Fair Value		Valuation Technique	Unobservable Inputs	Range
Non-investment grade, subordinate CDO bonds	$	5,800	Discounted cash flows	Discount rate	19.0%
Investment in CBRE Strategic Partners Asia	2,869		Discounted cash flows	Discount rate	20.0%
Interest rate swaps1	41,875		Hypothetical derivative method	Credit borrowing spread	110 to 190 basis points

1. Fair value includes interest rate swap liabilities with an aggregate value of $(13).

34

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The following rollforward table reconciles the beginning and ending balances of financial assets (liabilities) measured at fair value on a recurring basis using Level III inputs as of March 31, 2018:

	Retained CDO Bonds			Investment in CBRE Strategic Partners Asia		Interest Rate Swaps		Total Financial Assets (Liabilities) - Level III
Balance at January 1, 2018	$	5,527		$	2,820	$	19,495	$	27,842
Amortization of discounts or premiums	321			—		330		651
Adjustments to fair value:
Unrealized gain on derivatives	—			—		22,050		22,050
Unrealized loss in other comprehensive income from fair value adjustment	(48		)	—		—		(48		)
Total gain on fair value adjustments	—			49		—		49
Balance at March 31, 2018	$	5,800		$	2,869	$	41,875	$	50,544

Fair Value on a Non-Recurring Basis

The Company measures its real estate investments impaired during a period, including both assets classified as held for sale and assets held for investment, on a non-recurring basis, and records impairment on these assets as a result of a change in intent to hold the real estate investments. Real estate investments impaired during a period are reported at estimated fair value and real estate investments impaired during a period that are classified as held for sale as of the end of the period are reported at estimated fair value less costs to sell. There were noassets measured on a non-recurring basis as of March 31, 2018. There were sevenassets measured on a non-recurring basis as of December 31, 2017, which were all classified as held for investment and recorded at $87,996 as of December 31, 2017.

8. Derivatives and Non-Derivative Hedging Instruments

In the normal course of business, the Company is exposed to the effect of interest rate changes and foreign exchange rate changes. The Company limits these risks by following established risk management policies and procedures including the use of derivatives and net investment hedges. The Company uses a variety of derivative instruments to manage, or hedge, interest rate risk. The Company enters into hedging and derivative instruments that will be maximally effective in reducing the interest rate risk and foreign currency exchange rate risk exposure that they are designated to hedge. This effectiveness is essential for qualifying for hedge accounting. Instruments that meet these hedging criteria are formally designated as hedges at the inception of the derivative contract. The Company uses a variety of commonly used derivative products that are considered “plain vanilla” derivatives. These derivatives typically include interest rate swaps, forward starting swaps, caps, collars and floors. The Company expressly prohibits the use of unconventional derivative instruments and the use of derivative instruments for trading or speculative purposes. Further, the Company has a policy of only entering into contracts with major financial institutions based upon their credit ratings and other factors.

The Company recognizes all derivatives on the Consolidated Balance Sheets at fair value within other assets or other liabilities, depending on the balance at the end of the period. Derivatives that are not designated as hedges must be adjusted to fair value through income. If a derivative is designated and qualifies as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will be recognized in other comprehensive income until the hedged item is recognized in earnings. Prior to the Company’s adoption of ASU 2017-12 on January 1, 2018, described in Note 2, the ineffective portion of the change in fair value of a derivative designated as a hedge was immediately recognized in earnings, however subsequent to adoption, the entire change in fair value is recognized in other comprehensive income until the hedged item is recognized in earnings. As a result of adoption, the Company recorded a decrease to its opening retained earnings balance and a corresponding increase to its opening accumulated other comprehensive income balance of $103 as of January 1, 2018, which represents the cumulative amount of hedge ineffectiveness recorded in the Consolidated Statements of Operations at the time of adoption. Derivative accounting may increase or decrease reported net income and shareholders’ equity prospectively, depending on future levels of the LIBOR swap spreads and other variables affecting the fair values of derivative instruments and hedged items, but will have no effect on cash flows, provided the contract is carried through to full term. Refer to Note 7 for additional information on the Company's derivative instruments, including the fair value measurement of these instruments.

Borrowings on the Company’s multicurrency tranche of the 2015 Revolving Credit Facility, which are designated as non-derivative net investment hedges, are recognized at par value based on the exchange rate in effect on the date of the draw. Subsequent changes in the exchange rates of the Company’s non-derivative net investment hedges are recognized as part of the cumulative foreign currency translation adjustment within other comprehensive income.

35

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The Company’s derivatives and hedging instruments as of March 31, 2018 are as follows:

	Benchmark Rate	Notional Value	Strike Rate	Effective Date	Expiration Date	Fair Value
Interest Rate Swap - Waco	1 mo. USD-LIBOR-BBA	14,815 USD	4.55%	12/19/2013	12/19/2020	$	(13	)
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.22%	12/19/2016	12/17/2018	615
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.23%	12/19/2016	12/17/2018	612
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.24%	12/19/2016	12/17/2018	604
Interest Rate Swap - 5-Year Term Loan	1 mo. USD-LIBOR-BBA	750,000 USD	1.60%	12/17/2015	12/17/2020	17,010
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	175,000 USD	1.82%	12/17/2015	1/9/2023	5,660
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	60,000 USD	1.95%	10/13/2017	1/9/2023	1,599
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	40,000 USD	2.01%	10/13/2017	1/9/2023	953
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	39,500 USD	1.96%	10/13/2017	1/9/2023	1,016
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	1.96%	10/13/2017	1/9/2023	809
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	2.00%	10/13/2017	1/9/2023	765
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	22,500 USD	1.95%	10/13/2017	1/9/2023	593
Forward Starting Swap1	3 mo. USD-LIBOR-BBA	250,000 USD	2.23%	12/20/2017	12/20/2027	11,652
Net Investment Hedge in GBP-denominated investments	USD-GBP exchange rate	9,000 GBP	N/A	7/15/2016	N/A	—
Net Investment Hedge in EUR-denominated investments	USD-EUR exchange rate	4,000 EUR	N/A	3/8/2018	N/A	—
Total hedging instruments						$	41,875

1. The forward starting swap has a mandatory early termination date of June 20, 2018.

As of March 31, 2018, the Company’s derivative instruments consisted of interest rate swaps, which are cash flow hedges used to hedge exposure to variability in future interest payments on its debt facilities. The Company's interest rate swap derivative instruments were reported in other assets at fair value of $41,888 and in other liabilities at fair value of $(13) at March 31, 2018.

36

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The table below details the location in the financial statements of the gain or loss recognized on the interest rate swaps designated as cash flow hedges for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Accumulated other comprehensive income:
Gain recognized in accumulated other comprehensive income1	$	22,153	$	—
Interest expense:
Gain reclassified from accumulated other comprehensive income into interest expense1	$	268	$	268
Gain recognized in interest expense (ineffective portion)2	—		46
Total recognized in interest expense on statements of operations	$	268	$	314

1. Periods prior to January 1, 2018, when the Company adopted ASU 2017-12, include only the effective portion and periods subsequent to January 1, 2018 include both the effective and ineffective portions as the two amounts are no longer separately measured and reported. The first quarter of 2018 includes $103 related to the adoption of ASU 2017-02.

2. Represents the ineffective portion and pertains only to periods prior to January 1, 2018, when the Company adopted ASU 2017-12.

During the next 12 months, the Company expects that $(7,947) will be reclassified from other comprehensive income as an increase in interest expense for the Company’s interest rate swaps as of March 31, 2018. Additionally, the Company will recognize $1,295 in interest expense on a straight-line basis over the remaining original term of terminated swaps through June 2019, representing amortization of the remaining accumulated other comprehensive income balance related to the swap, and of this amount $1,087 will be recognized in interest expense during the next 12 months.

The Company hedges exposure to changes in the exchange rates underlying its investments based in foreign currencies using non-derivative net investment hedges in conjunction with borrowings under the multicurrency tranche of its 2015 Revolving Credit Facility. In March 2018, the Company entered into a non-derivative net investment hedge on its euro-denominated investment in the Gramercy European Property Fund III and in prior periods, from September 2015 until disposal of the underlying investments in July 2017, the Company had a non-derivative net investment hedge on its investments in the Gramercy European Property Fund and the Goodman Europe JV, all of which had euros as their functional currencies. The Company’s non-derivative net investment hedge on its British pound sterling-denominated investments, which was entered into in July 2016, is used to hedge exposure to changes in the British pound sterling U.S. dollar exchange rate underlying its unconsolidated equity investment in the Goodman UK JV, which has British pounds sterling as its functional currency. The Company’s non-derivative net investment hedge values are reported at carrying value and are included in the balance of the senior unsecured revolving credit facility on the Consolidated Balance Sheets. During the three months ended March 31, 2018 and 2017, the Company recorded a net loss of $459 and $923, respectively, in other comprehensive income from the impact of exchange rates related to the non-derivative net investment hedges. When the non-derivative net investments being hedged are sold or substantially liquidated, the balance of the translation adjustment accumulated in other comprehensive income will be reclassified into earnings.

37

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

9. Shareholders’ Equity (Deficit) of the Company

As of March 31, 2018 and December 31, 2017, the Company's authorized capital shares consisted of 500,000,000 shares of beneficial interest, $0.01 par value per share, of which the Company is authorized to issue up to 490,000,000 common shares of beneficial interest, $0.01 par value per share, or common shares, and 10,000,000 preferred shares of beneficial interest, $0.01 par value per share, or preferred shares. As of March 31, 2018, 160,782,765 common shares and 3,500,000 preferred shares were issued and outstanding.

In February 2018, the Company’s board of trustees authorized and the Company declared a dividend of $0.375 per common share for the first quarter of 2018, which was paid on April 16, 2018 to holders of record as of March 30, 2018.

Employee Share Purchase Plan

In June 2017, the Company’s shareholders approved an Employee Share Purchase Plan, or ESPP, which enables the Company’s eligible employees to purchase the common shares through payroll deductions. The ESPP has a maximum of 250,000 common shares available for issuance and provides for eligible employees to purchase the common shares during defined offering periods at a purchase price determined at the discretion of the board of trustees, which has been initially established to be equal to 90.0% of the lower of either (i) the closing price of the Company’s common shares on the first day of the offering period and (ii) the closing price of the Company’s common shares on the last day of the offering period. As of March 31, 2018, there were no shares issued under the ESPP.

Dividend Reinvestment Plan

In June 2016, the Company adopted a dividend reinvestment plan, or DRIP, under which shareholders may use their dividends and optional cash payments to purchase additional common shares of the Company. In August 2016, the Company registered 3,333,333 common shares related to the DRIP. During the three months ended March 31, 2018, 1,811 shares were issued under the DRIP and as of March 31, 2018 there were 3,323,962 shares available for issuance under the DRIP.

At-The-Market Equity Offering Program

In July 2016, the Company’s board of trustees approved the establishment of an “at the market” equity issuance program, or ATM Program, pursuant to which the Company may offer and sell common shares with an aggregate gross sales price of up to $375,000. During the three months ended March 31, 2018, the Company did not sell any common shares through the ATM Program.

Preferred Shares

Holders of the Company's 7.125% Series A Preferred Shares, or Series A Preferred Shares, are entitled to receive annual dividends of $1.78125 per share on a quarterly basis and dividends are cumulative, subject to certain provisions. On or after August 15, 2019, the Company can, at its option, redeem the Series A Preferred Shares at par for cash. At March 31, 2018, the Company had 3,500,000 of its Series A Preferred Shares outstanding with a mandatory liquidation preference of $25.00 per share.

38

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Equity Incentive Plans

In June 2016, the Company instituted its 2016 Equity Incentive Plan, which was approved by the Company’s board of trustees and shareholders. As of March 31, 2018, there were 2,634,080 shares available for grant under the 2016 Equity Incentive Plan. The Company accounts for share-based compensation awards using fair value recognition provisions and assumes an estimated forfeiture rate which impacts the amount of compensation cost recognized over the benefit period.

Through March 31, 2018, 1,129,130 restricted shares had been issued under the Company’s equity incentive plans, including the 2016 Equity Incentive Plan and the Company’s previous equity incentive plans, of which 67.2% have vested. As of March 31, 2018 and December 31, 2017, the Company had 316,183 and 347,676 weighted average restricted shares outstanding, respectively. Compensation expense of $541 and $817 was recorded for the three months ended March 31, 2018 and 2017, respectively, related to the Company’s equity incentive plans. Compensation expense of $4,757 will be recorded over the course of the next 26 months representing the remaining weighted average vesting period of equity awards issued under the equity incentive plans as of March 31, 2018.

Compensation expense of $1,138 and $1,056 was recorded for the three months ended March 31, 2018 and 2017, respectively, for the Company's Outperformance Plans. Compensation expense of $10,188 will be recorded over the course of the next 35 months, representing the remaining weighted average vesting period of the awards issued under the Outperformance Plans as of March 31, 2018.

Earnings per Share

The Company presents both basic and diluted earnings per share, or EPS. Basic EPS is computed by dividing net income available to common shareholders, as adjusted for unallocated earnings attributable to certain participating securities, if any, by the weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common shares were exercised or converted into common shares, as long as their inclusion would not be anti-dilutive. The two-class method is an earnings allocation methodology that determines EPS for common shares and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The Company has certain share-based payment awards that contain nonforfeitable rights to dividends, which are considered participating securities for the purposes of computing EPS pursuant to the two-class method, and therefore the Company applies the two-class method in its computation of EPS.

39

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Earnings per share for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net income attributable to noncontrolling interest	(802		)	(154		)
Less: Nonforfeitable dividends allocated to participating shareholders	(203		)	(276		)
Less: Preferred share dividends	(1,559		)	(1,559		)
Net income available to common shares outstanding	$	25,300		$	7,292
Denominator – Weighted average shares:
Basic weighted average shares outstanding	160,408,136			140,907,399
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average shares outstanding	160,416,900			141,875,619

The Company’s options and other share-based payment awards used in the computation of EPS were calculated using the treasury share method. As discussed in Note 5, 100.0% of the Company’s Exchangeable Senior Notes were exchanged for 5,258,420 of the Company’s common shares in September 2017, however for the three months ended March 31, 2017, the Company had the intent and ability to settle the debt component of the Exchangeable Senior Notes in cash and the excess conversion premium in shares, thus for that period the Company only included the effect of the excess conversion premium in the calculation of Diluted EPS.

For the three months ended March 31, 2018 and 2017, the net income attributable to the outside interests in the Operating Partnership has been excluded from the numerator and 5,040,730 and 620,586, respectively, weighted average shares related to the outside interests in the Operating Partnership have been excluded from the denominator for the purpose of calculating Diluted EPS as there would have been no effect had such amounts been included. Refer to Note 11 for more information on the outside interests in the Operating Partnership.

40

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Accumulated other comprehensive income (loss)

Accumulated other comprehensive income (loss) as of March 31, 2018 and December 31, 2017 is comprised of the following:

	March 31, 2018			December 31, 2017
Net unrealized gain on derivative securities	$	37,680		$	15,630
Net unrealized gain on debt instruments	369			417
Foreign currency translation adjustments:
Net gain on non-derivative net investment hedges1	(162		)	297
Other foreign currency translation adjustments	(4,757		)	(5,734		)
Reclassification of swap gain into interest expense	2,434			2,166
Cumulative effect of accounting change	103			—
Total accumulated other comprehensive income	$	35,667		$	12,776

1. The foreign currency translation adjustment associated with the Company’s non-derivative net investment hedge related to its European investments is included in other comprehensive income (loss). The balance reflects write-offs of $1,851 on the Company’s non-derivative net investment hedge during the year ended December 31, 2017.

10. Partners’ Capital of the Operating Partnership

The Company is the sole general partner of the Operating Partnership. As of March 31, 2018, the Company owned 160,782,765 of the outstanding general and limited partnership interests, or 96.75%, of the Operating Partnership. The number of common units in the Operating Partnership is equivalent to the number of outstanding common shares of the Company, and the entitlement of all the Operating Partnership’s common units to quarterly distributions and payments in liquidation are substantially the same as those of the Company's common shareholders. Similarly, in the case of each series of preferred units in the Operating Partnership held by the Company, there is a series of preferred shares that is equivalent in number and carries substantially the same terms as such series of the Operating Partnership’s preferred units.

Limited Partner Units

As of March 31, 2018, limited partners other than the Company owned 5,388,995 common units, or 3.25%, of the Operating Partnership.

41

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

Earnings per Unit

The Operating Partnership's earnings per unit for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net gain attributable to noncontrolling interest in other partnerships	—			(120		)
Less: Nonforfeitable dividends allocated to participating unitholders	(203		)	(276		)
Less: Preferred unit distributions	(1,559		)	(1,559		)
Net income available to common units outstanding	$	26,102		$	7,326
Denominator – Weighted average units:
Basic weighted average units outstanding	165,448,866			141,527,985
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average units outstanding	165,457,630			142,496,205

11. Noncontrolling Interests

Noncontrolling interests represent the outside equity interests in the Operating Partnership as well as third-party equity interests in the Company’s other consolidated subsidiaries.

Outside equity interests in Operating Partnership

The outside equity interests in the Operating Partnership include common units of limited partnership interest in the Operating Partnership, or OP Units, and the earned and vested portion of limited partnership interests in the Operating Partnership granted by the Company pursuant to its share-based compensation plans, or LTIP Units, which are convertible on a one-for-one basis into OP Units. The aggregate outstanding noncontrolling interest in the Operating Partnership as of March 31, 2018 represented an interest of approximately 3.25% in the Operating Partnership. A portion of the Operating Partnership’s net income (loss) during each reporting period is attributed to noncontrolling interests based on the weighted average percentage ownership of both OP Unit holders and earned and vested LTIP Unit holders relative to the sum of the Company’s total outstanding common shares, OP Units, and earned and vested LTIP Units.

OP Units

During the three months ended March 31, 2018, the Company issued 996,098 OP Units as part of its contribution to fund its pro rata share of the E-Commerce JV’s acquisition of two properties. As of March 31, 2018, 4,729,480 OP Units were outstanding, which can be redeemed for 4,729,480 of the Company's shares. During the three months ended March 31, 2018 and the year ended December 31, 2017, 6,038 and 134,607 OP Units, respectively, were converted on a one-for-one basis into common shares of the Company. At March 31, 2018, 4,729,480 common shares of the Company

42

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

were reserved for issuance upon redemption of OP Units. OP Units are recorded at the greater of cost basis or fair market value based on the closing share price of the Company’s common shares at the end of the reporting period. As of March 31, 2018, the value of the OP units was $137,800.

LTIP Units

As of March 31, 2018, noncontrolling interest owners held 659,515 earned and vested LTIP Units, which, upon conversion into OP Units, can be redeemed for 659,515 of the Company’s common shares. During the three months ended March 31, 2018 and year ended December 31, 2017, there were no earned and vested LTIP Units converted into OP Units or redeemed for common shares of the Company. At March 31, 2018, 659,515 common shares of the Company were reserved for issuance upon conversion of the earned and vested LTIP Units into OP Units and their subsequent redemption for common shares.

Below is the rollforward of the activity relating to the noncontrolling interests in the Operating Partnership as of March 31, 2018:

	Noncontrolling Interest
Balance at January 1, 2018	$	113,530
Issuance of noncontrolling interests in the Operating Partnership	25,142
Redemption of noncontrolling interests in the Operating Partnership	(130		)
Net income attribution	802
Fair value adjustments	232
Dividends	(1,776		)
Balance at March 31, 2018	$	137,800

Interests in Other Entities

There are entities that the Company consolidates into its Consolidated Financial Statements based on the structure of the entities and their control provisions. As of March 31, 2018, the Company consolidated the Lakemont Development Investment and during the year ended December 31, 2017 until its dissolution in the fourth quarter of 2017, the Company consolidated European Fund Manager, which were both consolidated VIEs of the Company. The Company’s interest in these entities is presented in the equity section of its Consolidated Financial Statements. Refer to Note 2 for further discussion of these entities and consolidation considerations.

12. Commitments and Contingencies

Funding Commitments

As of March 31, 2018, the Company is obligated to fund the development of one property and remaining improvements at three development properties, for which it has remaining cumulative future commitments of $59,104.

The Company has committed $64,257 (€52,187) to the Gramercy European Property Fund III. The Company contributed $2,460 (€1,977) to the Gramercy European Property Fund III as of March 31, 2018. Foreign currency commitments have been converted into U.S. dollars based on (i) the foreign exchange rate at the closing date for completed transactions and (ii) the exchange rate that prevailed on March 31, 2018, in the case of unfunded commitments.

43

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

The Company has a 51.0% interest in the E-Commerce JV and has committed capital to fund its pro rata share of the E-Commerce JV’s initial acquisition of six properties, as well as the acquisition of additional properties in the future, subject to the partners' approval. The Company's pro rata funding commitment for the initial six properties is estimated at approximately $110,000, which will be funded using a combination of OP Units and cash. As of March 31, 2018, the Company contributed approximately $30,206 to the E-Commerce JV, of which $1,130 was contributed in cash.

The Company has committed to fund $100,000 to Strategic Office Partners, of which $29,477 was funded as of March 31, 2018 and December 31, 2017. See Note 4 for further information on the Gramercy European Property Fund III, the E-Commerce JV, and Strategic Office Partners.

Legal Proceedings

The Company and/or one or more of its subsidiaries is party to various litigation matters that are considered routine litigation incidental to its or their business, none of which are considered material.

Office Leases

The Company has several office locations, which are each subject to operating lease agreements. These office locations include the Company’s corporate office at 90 Park Avenue, New York, New York, and the Company’s various regional offices located across the United States and Europe.

Capital and Operating Ground Leases

Certain properties acquired are subject to ground leases, which are accounted for as operating and capital leases, as applicable. The ground leases have varying ending dates, renewal options and rental rate escalations, with the latest lease extending to June 2053. Future minimum rental payments to be made by the Company under these non-cancelable ground leases, excluding increases resulting from increases in the consumer price index, are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Total
Ground Leases - Operating	$	1,888	$	2,593	$	2,596	$	2,567	$	2,598	$	73,175	$	85,417
Ground Leases - Capital	1		—		—		—		—		329		330
Total	$	1,889	$	2,593	$	2,596	$	2,567	$	2,598	$	73,504	$	85,747

13. Income Taxes

The Company has elected to be taxed as a REIT, under Sections 856 through 860 of the Internal Revenue Code beginning with its taxable year ended December 31, 2004. To qualify as a REIT, the Company must meet certain organizational and operational requirements, including a requirement to distribute annually at least 90.0% of its ordinary taxable income to its shareholders. As a REIT, the Company generally will not be subject to U.S. federal income tax on taxable income that it distributes to its shareholders. The Operating Partnership is a limited partnership and therefore is generally not liable for federal corporate income taxes as income is reported in the tax returns of its partners. The Operating Partnership may, however, be subject to certain state and local taxes. The Operating Partnership has in the past established taxable REIT subsidiaries, or TRSs, to effect various taxable transactions. Typical transactions that could cause these TRSs to be subject to federal, state and local taxes would include, but are not limited to, gains on

44

Gramercy Property Trust and GPT Operating Partnership LP

Notes to Consolidated Financial Statements

(Unaudited, dollar amounts in thousands, except per share and per unit data)

March 31, 2018

property sales and management fee income. Tax expense from the Operating Partnership’s TRS for the three months ended March 31, 2018 and 2017 was immaterial.

The Company’s policy for interest and penalties, if any, on material uncertain tax positions recognized in the financial statements is to classify these as interest expense and operating expense, respectively. As of March 31, 2018 and December 31, 2017, the Company did not incur any material interest or penalties.

14. Supplemental Cash Flow Information

The following table represents supplemental cash flow disclosures for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018			2017
Supplemental cash flow disclosures:
Interest paid	$	19,320		$	17,447
Income taxes paid	60			71
Proceeds from 1031 exchanges from sale of real estate	5			23,219
Use of funds from 1031 exchanges for acquisitions of real estate	(5		)	(23,218		)
Non-cash activity:
Fair value adjustment to noncontrolling interest in the Operating Partnership	$	232		$	(296	)
Debt assumed in acquisition of real estate	—			3,680
Debt transferred in disposition of real estate	—			(10,456		)
Non-cash acquisition of consolidated VIE	—			24,930
Dividend reinvestment plan proceeds	46			81
Redemption of units of noncontrolling interest in the Operating Partnership for common shares	(130		)	(2,164		)
Contributions to unconsolidated equity investments for units of noncontrolling interests in the operating partnership	25,141			—

15. Subsequent Events

In April 2018, the Company declared a second quarter 2018 common dividend of $0.375 per share, payable on July 16, 2018 to shareholders of record as of June 29, 2018. In April 2018, the Company also declared a second quarter 2018 dividend on its 7.125% Series A Preferred Shares in the amount of $0.44531 per share, payable on July 2, 2018 to preferred shareholders of record as of the close of business on June 19, 2018.

Subsequent to March 31, 2018, the Company closed on the disposition of a parcel of land for gross proceeds of approximately $975. Subsequent to March 31, 2018, the Company issued 570,863 OP Units valued at approximately $16,663 in connection with its contribution to the E-Commerce JV for the acquisition of two properties.

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

(Unaudited, dollar amounts in thousands, except per share and per unit data)

Overview

Gramercy Property Trust, or the Company or Gramercy, a Maryland real estate investment trust, or REIT, together with its subsidiary, GPT Operating Partnership LP, or the Operating Partnership, is a leading global investor and asset manager of commercial real estate. We specialize in acquiring and managing high quality, income producing commercial real estate leased to high quality tenants in major markets in the United States and Europe.

We earn revenues primarily through rental revenues on properties that we own in the United States. We also own unconsolidated equity investments in the United States, Europe, and Asia. Our operations are conducted primarily through the Operating Partnership, of which we are the sole general partner. As of March 31, 2018, third-party holders of limited partnership interests owned approximately 3.25% of the Operating Partnership. These interests are referred to as the noncontrolling interests in the Operating Partnership.

As of March 31, 2018, our wholly-owned portfolio consisted of 362 properties comprising 80,884,942 rentable square feet with 97.3% occupancy. As of March 31, 2018, we had ownership interests in 20 properties held in unconsolidated equity investments in the United States and Europe and one property held through the investment in CBRE Strategic Partners Asia. As of March 31, 2018, we managed approximately $1,960,000 of commercial real estate assets, including approximately $1,408,000 of assets in Europe.

During the three months endedMarch 31, 2018, we acquired one property with 162,056 square feet for a purchase price of approximately $10,550 and placed one development property into service with 126,722 square feet. During the three months endedMarch 31, 2018, we sold five properties and one warehouse from another asset aggregating 1,546,091 square feet for total gross proceeds of approximately $111,012.

Gramercy Property Trust has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended, or the Internal Revenue Code, and generally will not be subject to U.S. federal income taxes to the extent we distribute our taxable income, if any, to our shareholders. The Operating Partnership is a limited partnership and therefore is generally not liable for federal corporate income taxes as income is reported in the tax returns of its partners. We have in the past established, and may in the future establish taxable REIT subsidiaries, or TRSs, to effect various taxable transactions. Those TRSs are subject to federal, state and local taxes on the taxable income from their activities.

Unless the context requires otherwise, all references to “Company," "Gramercy,” “we,” “our” and “us” mean Gramercy Property Trust and its subsidiaries, including the Operating Partnership and its consolidated subsidiaries.

45

Results of Operations

Comparison of the three months ended March 31, 2018 to the three months ended March 31, 2017

Revenues

	2018			2017			Change
Rental revenue	$	122,245		$	103,282		$	18,963
Operating expense reimbursements	23,310			20,368			2,942
Third-party management fees	2,790			4,592			(1,802		)
Other income	1,135			1,752			(617		)
Total revenues	$	149,480		$	129,994		$	19,486
Equity in net loss of unconsolidated equity investments	$	(926	)	$	(94	)	$	(832	)

The increase of $18,963 in rental revenue and $2,942 in operating expense reimbursements is due to the increase in our wholly-owned property portfolio of 362 properties as of March 31, 2018 compared to 318 properties as of March 31, 2017.

The decreaseof $1,802in third-party management fees is primarily attributable to a decrease of $3,162 in asset management, property management, incentive fees and accounting fees earned from our contract with KBS, which expired on March 31, 2017. This partially offset by an increase of $1,080 in revenue from our European management platform during the three months ended March 31, 2018 compared to the three months ended March 31, 2017.

For the three months ended March 31, 2018, other income is primarily comprised of investment income of $894. For the three months ended March 31, 2017, other income is primarily comprised of property related income of $1,127 and investment income of $633.

The equity in net loss of unconsolidated equity investments of $926 and $94 for the three months ended March 31, 2018 and 2017, respectively, represents our proportionate share of the loss generated by our equity investments. 

46

Expenses

	2018			2017			Change
Depreciation and amortization	$	71,516		$	62,217		$	9,299
Property operating expenses	27,088			23,186			3,902
General and administrative expenses	9,686			8,756			930
Property management expenses	2,542			3,084			(542		)
Interest expense	25,492			23,056			2,436
Net impairment recognized in earnings	—			4,890			(4,890		)
Loss on extinguishment of debt	—			208			(208		)
Impairment of real estate investments	—			12,771			(12,771		)
Provision for taxes	621			(196		)	817
Net gain on disposals	(16,255		)	(17,377		)	1,122
Total expenses	$	120,690		$	120,595		$	95

The increase of $9,299 in depreciation and amortization expense and $3,902 in property operating expenses is due to our wholly-owned property portfolio of 362 properties as of March 31, 2018 compared to 318 properties as of March 31, 2017. Property operating expenses are comprised of expenses directly attributable to our real estate portfolio. Property operating expenses include property related costs which we are responsible for during the lease term but can be passed through to the tenant as operating expense reimbursement revenue.

The increase of $930 in general and administrative expense is primarily attributable to the increase in transaction costs of $901 during the three months ended March 31, 2018.

Property management expenses are comprised of costs related to our asset and property management business. The decrease of $542 in property management expenses is primarily related to the reduction of expenses associated with the KBS arrangement which ended in the first quarter of 2017. The decrease is partially offset by the increase in expenses related to our European management platform.

The increase of $2,436 in interest expense is primarily due to increased borrowings on our 2015 Revolving Credit Facility and the upsize of our 7-Year Term Loan.

During the three months ended March 31, 2017, we recorded net impairment recognized in earnings of $4,890 on our Retained CDO Bonds due to adverse changes in expected cash flows related to the Retained CDO Bonds.

During the three months ended March 31, 2017, we recognized an impairment on real estate investments of $12,771related to two properties that were determined to have non-recoverable declines in value during the period.

The provision for taxes was $621 and $(196) for the three months ended March 31, 2018 and 2017, respectively. The increase in our tax provision is primarily attributable to the increase in estimated taxes related to our European management platform.

During the three months ended March 31, 2018 and 2017, we realized a net gain on disposals of $16,255 and $17,377, respectively, related to the disposals of properties during the periods.

47

Liquidity and Capital Resources

Liquidity is a measurement of our ability to meet cash requirements, including ongoing commitments to fund acquisitions of real estate assets, repay borrowings, pay dividends and other general business needs. In addition to cash on hand, our primary sources of funds for short-term and long-term liquidity requirements, including working capital, distributions, debt service and additional investments, consist of: (i) borrowings under our unsecured revolving credit facility and term loans;(ii) proceeds from sales of real estate;(iii) cash flow from operations; and (iv) proceeds from our common equity and debt offerings. We believe these sources of financing will be sufficient to meet our short-term and long-term liquidity requirements.

Our cash flow from operations primarily consists of rental revenue, expense reimbursements from tenants, and third-party management fees. Our cash flow from operations is our principal source of funds that we use to pay operating expenses, debt service, general and administrative expenses, operating capital expenditures, dividends, and acquisition-related expenses. Our ability to fund our short-term liquidity needs, including debt service and general operations (including employment related benefit expenses), through cash flow from operations can be evaluated through the Consolidated Statements of Cash Flows included in our Consolidated Financial Statements.

Our ability to borrow under our 2015 Revolving Credit Facility and term loan facilities is subject to our ongoing compliance with a number of customary financial covenants including our maximum secured and unsecured leverage ratios, minimum fixed charge coverage ratios, consolidated adjusted net worth values, unencumbered asset values, occupancy rates, and portfolio lease terms.

We have several unconsolidated equity investments with partners who we consider to be financially stable. Our unconsolidated equity investments are financed with non-recourse debt or equity. We believe that cash flows from the underlying real estate investments and capital commitments will be sufficient to fund the capital needs of our unconsolidated equity investments.

To maintain our qualification as a REIT under the Internal Revenue Code, we must distribute annually at least 90.0% of our taxable income. This distribution requirement limits our ability to retain earnings and thereby replenish or increase capital for operations. As of the date of this filing, we expect that our cash on hand and cash flow from operations will be sufficient to satisfy our anticipated short-term and long-term liquidity needs as well as our recourse liabilities, if any.

Cash Flows

Net cash provided by operating activities increased$14,344 to $72,823 for the three months endedMarch 31, 2018 compared to $58,479 for the same period in 2017. Operating cash flow was generated primarily by net rental revenue from our real estate investments.

Net cash provided by investing activities for the three months endedMarch 31, 2018 was $73,380 compared to net cash used in investing activities of $87,638 during the same period in 2017. The increase in cash flow related to investing activities in 2018 is primarily attributable to a decrease in acquisition of real estate and increased proceeds from sales of real estate.

Net cash used in financing activities for the three months endedMarch 31, 2018 was $132,290 as compared to net cash provided by financing activities of $18,188 during the same period in 2017. The decrease in cash flow in 2018 is primarily attributable to net paydowns on our unsecured credit facility and increased dividend payments in 2018, as well as proceeds from sales of our common shares in 2017.

48

Equity Structure

As of March 31, 2018 and December 31, 2017, our authorized capital shares consists of 500,000,000 shares of beneficial interest, $0.01 par value per share, of which we are authorized to issue up to 490,000,000 common shares of beneficial interest, $0.01 par value per share, or common shares, and 10,000,000 preferred shares of beneficial interest, $0.01 par value per share, or preferred shares. As of March 31, 2018, 160,782,765 common shares and 3,500,000 preferred shares were issued and outstanding.

Market Capitalization

At March 31, 2018, our consolidated market capitalization was $6,378,453 based on a common share price of $21.73 per share, the closing price of our common shares on the NYSE on March 31, 2018. Market capitalization includes consolidated debt and common and preferred shares.

Dividends

To maintain our qualification as a REIT, we must pay annual dividends to our shareholders of at least 90.0% of our REIT taxable income, determined before taking into consideration the dividends paid deduction and net capital gains. Before we pay any dividend, whether for U.S. federal income tax purposes or otherwise, which would only be paid out of available cash, we must first meet both our operating requirements and scheduled debt service on our mortgages and other loans payable. Dividends per share declared during 2017 and 2018 are as follows:

Quarter Ended	Common dividends 1		Preferred dividends
March 31, 2017	$	0.375	$	0.445
June 30, 2017	$	0.375	$	0.445
September 30, 2017	$	0.375	$	0.445
December 31, 2017	$	0.375	$	0.445
March 31, 2018	$	0.375	$	0.445

1. Common dividends declared for a quarter are accrued for during the quarter and then paid to common shareholders of record as of the end of the quarter during the month following the quarter-end.

Indebtedness

Secured Debt

Mortgage Notes

Certain real estate assets are subject to mortgage notes. During the three months endedMarch 31, 2018, we did not assume or pay off any mortgages notes. During the year ended December 31, 2017, we assumed $181,107 of non-recourse mortgages in connection with seven real estate acquisitions. During the three months ended March 31, 2017, we refinanced the debt on two properties encumbered by a mortgage note, subsequently transferred the mortgage on these two properties to the buyer of the properties, and, as a result, recorded a net loss on the early extinguishment of debt of $208. Our mortgage notes include a series of financial and other covenants with which we must comply in order to borrow under them. We were in compliance with the covenants under the mortgage note facilities as of March 31, 2018.

As of March 31, 2018, we have $550,953 total outstanding principal under our mortgage notes, which encumber 50 properties, and have a weighted average remaining term of 4.6 years and a weighted average interest rate of 4.42%.

49

Weighted averages are based on outstanding principal balances as of March 31, 2018 and the interest rate reflects the effects of interest rate swaps and amortization of financing costs and fair market value premiums or discounts. Refer to Note 5 of the accompanying financial statements for additional information on our secured debt obligations.

Unsecured Debt

2015 Credit Facility and Term Loans

In December 2015, we entered into an agreement, or the Credit Agreement, for a new $1,900,000 credit facility, or the 2015 Credit Facility, consisting of an $850,000 senior unsecured revolving credit facility, or the 2015 Revolving Credit Facility, and $1,050,000 term loan facility with JPMorgan Securities LLC and Merrill Lynch, Pierce, Fenner and Smith Incorporated. The 2015 Revolving Credit Facility consists of a $750,000 U.S. dollar revolving credit facility and a $100,000 multicurrency revolving credit facility. The 2015 Revolving Credit Facility matures in January 2020, but may be extended for two additional six-month periods upon the payment of applicable fees and satisfaction of certain customary conditions. The term loan facility, or the 2015 Term Loan, consists of a $300,000 term loan facility that matures in January 2019 with one 12-month extension option, or the 3-Year Term Loan, and a $750,000 term loan facility that matures in January 2021, or the 5-Year Term Loan. In December 2015, we also entered into a new $175,0007-year unsecured term loan with Capital One, N.A., or the 7-Year Term Loan, which matures in January 2023. In October 2017, we modified the 7-Year Term Loan by increasing the loan amount to $400,000 and reducing the interest rate to the terms described below.

Outstanding borrowings under the 2015 Revolving Credit Facility incur interest at a floating rate based upon, at our option, either (i) adjusted LIBOR plus an applicable margin ranging from 0.88% to 1.55%, depending on our credit ratings, or (ii) the alternate base rate plus an applicable margin ranging from 0.00% to 0.55%, depending on our credit ratings. We are also required to pay quarterly in arrears a 0.13% to 0.30% facility fee, depending on the credit ratings, on the total commitments under the 2015 Revolving Credit Facility. Outstanding borrowings under the 2015 Term Loan and 7-Year Term Loan incur interest at a floating rate based upon, at our option, either (i) adjusted LIBOR plus an applicable margin ranging from 0.90% to 1.75%, depending on our credit ratings, or (ii) the alternate base rate plus an applicable margin ranging from 0.00% to 0.75%, depending on our credit ratings. The alternate base rate for the 2015 Revolving Credit Facility and 7-Year Term Loan is the greater of (x) the prime rate announced by JPMorgan Chase Bank, N.A. or Capital One, respectively, (y) 0.50% above the Federal Funds Effective Rate, and (z) the adjusted LIBOR for a one-month interest period plus 1.00%.

Our unsecured borrowing facilities include a series of financial and other covenants which which we must comply in order to borrow under them. We were in compliance with the covenants under the facilities as of March 31, 2018. Refer to the table at the end of Note 5 of the accompanying financial statements for specific terms and our outstanding borrowings under the facilities.

Senior Unsecured Notes

During 2015 and 2016, we issued and sold an aggregate $500,000 principal amount of senior unsecured notes payable in private placements, which have maturities ranging from 2022 through 2026 and bear interest semiannually at rates ranging from 3.89% to 4.97%. Refer to the table at the end of the section for specific terms of the outstanding notes.

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Exchangeable Senior Notes

In September 2017, our $115,000 of 3.75% Exchangeable Senior Notes were exchanged for 5,258,420 of our common shares.

The terms of our unsecured sources of financing and their combined aggregate principal maturities as of March 31, 2018 and December 31, 2017 are as follows:

	Stated Interest Rate	Effective Interest Rate 1	Maturity Date	Outstanding Balance
				March 31, 2018			December 31, 2017
2015 Revolving Credit Facility - USD tranche	2.89%	2.89%	1/8/2020	$	275,000		$	345,000
2015 Revolving Credit Facility - Multicurrency tranche	1.32%	1.32%	1/8/2020	17,543			12,162
3-Year Term Loan	2.91%	2.33%	1/8/2019	300,000			300,000
5-Year Term Loan	2.91%	2.70%	1/8/2021	750,000			750,000
7-Year Term Loan	2.76%	3.00%	1/9/2023	400,000			400,000
2015 Senior Unsecured Notes	4.97%	5.07%	12/17/2024	150,000			150,000
2016 Senior Unsecured Notes	3.89%	4.00%	12/15/2022	150,000			150,000
2016 Senior Unsecured Notes	4.26%	4.38%	12/15/2025	100,000			100,000
2016 Senior Unsecured Notes	4.32%	4.43%	12/15/2026	100,000			100,000
Total unsecured debt				2,242,543			2,307,162
Net deferred financing costs and net debt discount				(4,872		)	(5,063		)
Total unsecured debt, net				$	2,237,671		$	2,302,099

1. Represents the rate at which interest expense is recorded for financial reporting purposes as of March 31, 2018, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

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Derivatives and Non-Derivative Hedging Instruments

As of March 31, 2018, our derivative instruments consist of interest rate swaps, which are cash flow hedges. Changes in the effective portion of the fair value of derivatives designated as hedging instruments are recognized in other comprehensive income until the hedged item expires or is recognized in earnings. Prior to our adoption of ASU 2017-12 on January 1, 2018, described in Note 2 of the accompanying financial statements, the ineffective portion of the change in fair value of a derivative designated as a hedge was immediately recognized in earnings, however subsequent to adoption the entire change in fair value is recognized in other comprehensive income until the hedged item is recognized in earnings. As a result of adoption, we recorded a decrease to our opening retained earnings balance and a corresponding increase to our opening accumulated other comprehensive income balance of $103 as of January 1, 2018, which represents the cumulative amount of hedge ineffectiveness recorded in the Consolidated Statements of Operations at the time of adoption. Derivative accounting may increase or decrease reported net income and shareholders’ equity, depending on future levels of LIBOR interest rates, foreign exchange rates, and other variables affecting the fair values of derivative instruments and hedged items, but will have no effect on cash flows, provided the contract is carried through to full term.

Borrowings on the multicurrency tranche of our 2015 Revolving Credit Facility, which are designated as non-derivative net investment hedges, are recognized at par value based on the exchange rate in effect on the date of the draw. Subsequent changes in the exchange rate of our non-derivative net investment hedge are recognized as part of the cumulative foreign currency translation adjustment within other comprehensive income. Refer to Note 7 and Note 8 of the accompanying financial statements for additional information on our derivatives and non-derivative hedging instruments, including the fair value measurement of these instruments, as applicable.

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The following table summarizes our derivatives and hedging instruments at March 31, 2018. The aggregate fair value of our derivatives is presented in our Consolidated Balance Sheets in derivative instruments and the aggregate carrying value of the non-derivative net investment hedges is included in the balance of our 2015 Revolving Credit Facility. The notional value is an indication of the extent of our involvement in this instrument at that time, but does not represent exposure to credit, interest rate or market risks.

	Benchmark Rate	Notional Value	Strike Rate	Effective Date	Expiration Date	Fair Value
Interest Rate Swap - Waco	1 mo. USD-LIBOR-BBA	14,815 USD	4.55%	12/19/2013	12/19/2020	$	(13	)
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.22%	12/19/2016	12/17/2018	615
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.23%	12/19/2016	12/17/2018	612
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.24%	12/19/2016	12/17/2018	604
Interest Rate Swap - 5-Year Term Loan	1 mo. USD-LIBOR-BBA	750,000 USD	1.60%	12/17/2015	12/17/2020	17,010
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	175,000 USD	1.82%	12/17/2015	1/9/2023	5,660
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	60,000 USD	1.95%	10/13/2017	1/9/2023	1,599
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	40,000 USD	2.01%	10/13/2017	1/9/2023	953
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	39,500 USD	1.96%	10/13/2017	1/9/2023	1,016
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	1.96%	10/13/2017	1/9/2023	809
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	2.00%	10/13/2017	1/9/2023	765
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	22,500 USD	1.95%	10/13/2017	1/9/2023	593
Forward Starting Swap1	3 mo. USD-LIBOR-BBA	250,000 USD	2.23%	12/20/2017	12/20/2027	11,652
Net Investment Hedge in GBP-denominated investments	USD-GBP exchange rate	9,000 GBP	N/A	7/15/2016	N/A	—
Net Investment Hedge in EUR-denominated investments	USD-EUR exchange rate	4,000 EUR	N/A	3/8/2018	N/A	—
Total hedging instruments						$	41,875

1. The forward starting swap has a mandatory early termination date of June 20, 2018.

As of March 31, 2018, our derivative instruments consist of interest rate swaps, which are cash flow hedges used to hedge exposure to variability in future interest payments on our debt facilities. Our interest rate swap derivative instruments were reported in other assets at fair value of $41,888 and in other liabilities at fair value of $(13) at March 31, 2018.

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The table below details the location in the financial statements of the gain or loss recognized on the interest rate swaps designated as cash flow hedges for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Accumulated other comprehensive income:
Gain recognized in accumulated other comprehensive income1	$	22,153	$	—
Interest expense:
Gain reclassified from accumulated other comprehensive income into interest expense1	$	268	$	268
Gain recognized in interest expense (ineffective portion)2	—		46
Total recognized in interest expense on statements of operations	$	268	$	314

1. Periods prior to January 1, 2018, when we adopted ASU 2017-12, include only the effective portion and periods subsequent to January 1, 2018 include both the effective and ineffective portions as the two amounts are no longer separately measured and reported. The first quarter of 2018 includes $103 related to the adoption of ASU 2017-02.

2. Represents the ineffective portion and pertains only to periods prior to January 1, 2018, when we adopted ASU 2017-12.

Refer to Note 8 of the accompanying financial statements for additional information on our derivative and non-derivative hedging instruments.

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Contractual Obligations

We are obligated to fund capital expenditures related to our real estate investments, which primarily consist of expenditures to maintain assets, tenant improvement allowances and other construction or expansion obligations under tenant leases, and leasing commissions. As of March 31, 2018, we had commitments relating to tenant improvement allowances and funding obligations under leases totaling approximately $17,261 that are expected to be funded over the next five years. As of March 31, 2018, we are obligated to fund the development of one property and remaining improvements at three development properties, for which we have remaining cumulative future commitments of $59,104.

We have committed $64,257 (€52,187) to the Gramercy European Property Fund III. We contributed $2,460 (€1,977) to the Gramercy European Property Fund III as of March 31, 2018. Foreign currency commitments have been converted into U.S. dollars based on (i) the foreign exchange rate at the closing date for completed transactions and (ii) the exchange rate that prevailed on March 31, 2018, in the case of unfunded commitments.

We have a 51.0% interest in the E-Commerce JV and have committed capital to fund our pro rata share of the E-Commerce JV’s initial acquisition of six properties, as well as the acquisition of additional properties in the future, subject to the partners' approval. Our pro rata funding commitment for the initial six properties is estimated at approximately $110,000, which will be funded using a combination of OP Units and cash. As of March 31, 2018, we contributed approximately $30,206 to the E-Commerce JV, of which $1,130 was contributed in cash.

We have committed to fund $100,000 to Strategic Office Partners, of which $29,477 was funded as of March 31, 2018 and December 31, 2017. See Note 4 in the accompanying financial statements for further information on the Gramercy European Property Fund III, the E-Commerce JV, and Strategic Office Partners.

We have certain properties acquired that are subject to ground leases, which are accounted for as operating leases. The ground leases have varying ending dates, renewal options and rental rate escalations, with the latest leases extending to June 2053. Combined aggregate principal maturities and future minimum payments of our unsecured debt obligations, non-recourse mortgages, and ground leases, in addition to associated interest payments as of March 31, 2018 are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Above market interest		Total
2015 Revolving Credit Facility	$	—	$	—	$	292,543	$	—	$	—	$	—	$	—	$	292,543
Term Loans	—		300,000		—		750,000		—		400,000		—		1,450,000
Mortgage Notes Payable 1	66,599		30,450		62,834		19,256		141,929		229,885		—		550,953
Senior Unsecured Notes	—		—		—		—		150,000		350,000		—		500,000
Ground Leases	1,889		2,593		2,596		2,567		2,598		73,504		—		85,747
Interest Payments 2	82,144		97,025		87,135		57,199		53,364		64,772		3,648		445,287
Total	$	150,632	$	430,068	$	445,108	$	829,022	$	347,891	$	1,118,161	$	3,648	$	3,324,530

1. Mortgage note payments reflect accelerated repayment dates, when applicable, pursuant to the related agreement.

2. Interest payments do not reflect the effect of interest rate swaps.

We have several office locations, which are each subject to operating lease agreements. These office locations include our corporate office at 90 Park Avenue, New York, New York, and our various regional offices located across the United States and Europe.

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Leasing Agreements

Future minimum rental revenue under non-cancelable leases, excluding reimbursements for operating expenses, as of March 31, 2018 are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Total
Future Rents	$	338,938	$	442,926	$	417,634	$	383,264	$	333,713	$	1,729,063	$	3,645,538

Future straight-line rent adjustments under non-cancelable leases as of March 31, 2018 are as follows:

	April 1 to December 31, 2018		2019		2020		2021			2022			Thereafter			Total
Straight-line Rent Adjustments	$	16,755	$	13,584	$	4,976	$	(585	)	$	(3,396	)	$	(103,752	)	$	(72,418	)

Off-Balance Sheet Arrangements

We have off-balance sheet investments, including joint ventures and equity investments. These investments all have varying ownership structures. Substantially all of our joint venture and equity investment arrangements are accounted for under the equity method of accounting as we have the ability to exercise significant influence, but not control over the operating and financial decisions of these joint venture and equity investment arrangements. Our off-balance sheet arrangements and financial results are discussed in detail in Note 4 in the accompanying financial statements.

Transactions with Trustee Related Entities and Related Parties

Our CEO, Gordon F. DuGan, was on the board of directors of the Gramercy European Property Fund prior to its sale in July 2017 and committed and fully funded approximately $1,388 (€1,250) in capital to the Gramercy European Property Fund. The two Managing Directors of Gramercy Europe Limited collectively committed and fully funded approximately $1,388 (€1,250) in capital to the Gramercy European Property Fund prior to the sale of its assets in July 2017. Foreign currency commitments have been converted into U.S. dollars based on (i) the foreign exchange rate at the closing date for completed transactions and (ii) the exchange rate that prevailed on March 31, 2018, in the case of unfunded commitments.

Non-GAAP Financial Measures 

We use the following non-GAAP financial measures that we believe are useful to investors as a key supplemental measure of our operating performance: funds from operations attributable to common shareholders and unitholders, or FFO, core funds from operations attributable to common shareholders and unitholders, or Core FFO, and adjusted funds from operations attributable to common shareholders and unitholders, or AFFO. We present FFO because we consider it an important supplemental measure of our operating performance and believe that it is frequently used by securities analysts, investors and other interested parties in the evaluation of REITs. We also use FFO as one of several criteria to determine performance-based incentive compensation for members of our senior management, which may be payable in cash or equity awards. The revised White Paper on FFO approved by the Board of Governors of the National Association of Real Estate Investment Trusts, or NAREIT, defines FFO as net income (loss) (determined in accordance with GAAP), excluding impairment write-downs of investments in depreciable real estate and investments in in-substance real estate

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investments and sales of depreciable operating properties, plus real estate-related depreciation and amortization (excluding amortization of deferred financing costs), less distributions to noncontrolling interests and gains/losses from discontinued operations and after adjustments for unconsolidated partnerships and joint ventures.

Core FFO and AFFO are Company-defined measures. Core FFO is presented excluding transaction costs, acquisition costs, gain (loss) on extinguishment of debt, other-than-temporary impairments on retained bonds, mark-to-market on interest rate swaps, and one-time charges. Our AFFO also excludes non-cash share-based compensation expense, amortization of market lease intangibles, amortization of deferred financing costs and non-cash interest, amortization of free rent received at property acquisition, straight-line rent, and other adjustments including non-real estate depreciation and amortization and straight-line rent related to corporate office leases. Core FFO and AFFO include applicable adjustments for unconsolidated partnerships and joint ventures. We believe that Core FFO and AFFO are useful supplemental measures regarding our operating performances as they provide a meaningful and consistent comparison of our operating performance and allow investors to more easily compare our operating results.

FFO, Core FFO, and AFFO do not represent cash generated from operating activities in accordance with GAAP and should not be considered as alternatives to net income (determined in accordance with GAAP), as indications of our financial performance, or to cash flow from operating activities as measures of our liquidity, nor are they entirely indicative of funds available to fund our cash needs, including our ability to make cash distributions. Our calculation of FFO may be different from the calculation used by other companies and, therefore, comparability may be limited.

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FFO, Core FFO, and AFFO for the three months ended March 31, 2018 and 2017 are as follows:

	Three Months Ended March 31,
	2018			2017
Net income attributable to common shareholders	$	25,503		$	7,568
Depreciation and amortization	71,516			62,217
FFO adjustments for unconsolidated equity investments	1,921			2,253
Net income attributable to noncontrolling interest	802			154
Net loss from discontinued operations	—			24
Impairment of real estate investments	—			12,771
Other adjustments1	(200		)	(208		)
Net gain on disposals	(16,255		)	(17,377		)
Funds from operations attributable to common shareholders and unitholders	$	83,287		$	67,402
Core FFO adjustments for unconsolidated equity investments	674			—
Other-than-temporary impairments on retained bonds	—			4,890
Transaction costs	1,044			—
Loss on extinguishment of debt	—			208
Mark-to-market on interest rate swaps	—			(46		)
Core funds from operations attributable to common shareholders and unitholders	$	85,005		$	72,454
Non-cash share-based compensation expense	1,856			2,054
Amortization of deferred financing costs and non-cash interest	514			840
Other adjustments2	154			208
Amortization of free rent received at property acquisition	429			304
AFFO adjustments for unconsolidated equity investments	(43		)	14
Straight-line rent	(7,025		)	(7,260		)
Amortization of market lease intangibles3	(392		)	(547		)
Adjusted funds from operations attributable to common shareholders and unitholders	$	80,498		$	68,067
Funds from operations per share – basic	$	0.50		$	0.48
Funds from operations per share – diluted	$	0.50		$	0.47
Core funds from operations per share – basic	$	0.51		$	0.51
Core funds from operations per share – diluted	$	0.51		$	0.51
Adjusted funds from operations per share – basic	$	0.49		$	0.48
Adjusted funds from operations per share – diluted	$	0.49		$	0.48
Basic weighted average common shares outstanding – EPS	160,408,136			140,907,399
Weighted average partnership units held by noncontrolling interest	5,040,730			620,586
Weighted average common shares and units outstanding	165,448,866			141,527,985
Diluted weighted average common shares and common share equivalents outstanding – EPS	160,416,900			141,875,619
Weighted average partnership units held by noncontrolling interest	5,040,730			620,586
Weighted average share-based payment awards	316,014			471,328
Diluted weighted average common shares and units outstanding	165,773,644			142,967,533

1. Includes non-real estate depreciation and amortization.

2. Includes non-real estate depreciation, amortization, and straight-line rent related to corporate office leases. Corporate office related straight-line rent has been reclassified into this line for the three months ended March 31, 2018.

3. Includes amortization of lease inducement costs and market lease intangibles.

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Cautionary Note Regarding Forward-Looking Information

This report contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. You can identify forward-looking statements by the use of forward-looking expressions such as “may,” “will,” “should,” “expect,” “believe,” “anticipate,” “estimate,” “intend,” “plan,” “project,” “continue,” or any negative or other variations on such expressions. Forward-looking statements include information concerning possible or assumed future results of our operations, including any forecasts, projections, plans and objectives for future operations. Although we believe that our plans, intentions and expectations as reflected in or suggested by those forward-looking statements are reasonable, we can give no assurance that the plans, intentions or expectations will be achieved. We have listed below some important risks, uncertainties and contingencies which could cause our actual results, performance or achievements to be materially different from the forward-looking statements we make in this report. These risks, uncertainties and contingencies include, but are not limited to, the following:

• the success or failure of our efforts to implement our current business strategy; 

• our ability to identify and complete additional property acquisitions and risks of real estate acquisitions; 

• availability of investment opportunities on real estate assets and real estate-related and other securities;

• the performance and financial condition of tenants and corporate customers; 

• the adequacy of our cash reserves, working capital and other forms of liquidity; 

• the availability, terms and deployment of short-term and long-term capital; 

• demand for industrial and office space; 

• the actions of our competitors and our ability to respond to those actions;

• the timing of cash flows from our investments;

• the cost and availability of our financings, which depends in part on our asset quality, the nature of our relationships with our lenders and other capital providers, our business prospects and outlook and general market conditions; 

• unanticipated increases in financing and other costs, including a rise in interest rates; 

• economic conditions generally and in the commercial finance and real estate markets;

• changes in governmental regulations, tax rates and similar matters; 

• legislative and regulatory changes (including changes to real estate and zoning laws, laws governing the taxation of REITs or the exemptions from registration as an investment company); 

• our international operations, including unfavorable foreign currency rate fluctuations, enactment or changes in laws relating to foreign ownership of property, and local economic or political conditions that could adversely affect our earnings and cash flows;

• reduction in cash flows received from our investments; 

• volatility or reduction in the value or uncertain timing in the realization of our retained collateralized debt obligation bonds; 

• our ability to profitably dispose of non-core assets; 

• availability of, and ability to retain, qualified personnel and trustees; 

• changes to our management and board of trustees; 

• environmental and/or safety requirements and risks related to natural disasters; 

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• declining real estate valuations and impairment charges; 

• our ability to satisfy complex rules in order for us to qualify as a REIT for U.S. federal income tax purposes and qualify for our exemption under the Investment Company Act of 1940, as amended, our Operating Partnership's ability to satisfy the rules in order to qualify as a partnership for U.S. federal income tax purposes, and the ability of certain of our subsidiaries to qualify as REITs and certain of our subsidiaries to qualify as taxable REIT subsidiaries for U.S. federal income tax purposes, and our ability and the ability of our subsidiaries to operate effectively within the limitations imposed by these rules; 

• uninsured or underinsured losses relating to our properties; 

• our inability to comply with the laws, rules and regulations applicable to companies, and in particular, public companies; 

• tenant bankruptcies and defaults on or non-renewal of leases by tenants; 

• decreased rental rates or increased vacancy rates; 

• the continuing threat of terrorist attacks on the national, regional and local economies; and

• other factors discussed under Item 1A, "Risk Factors" of our Annual Report on Form 10-K and those factors that may be contained in any subsequent filing we make with the SEC, which are or will be incorporated by reference herein.

We assume no obligation to update publicly any forward-looking statements, whether as a result of new information, future events, or otherwise. In evaluating forward-looking statements, you should consider these risks and uncertainties, together with the other risks described from time-to-time in our reports and documents which are filed with the SEC, and you should not place undue reliance on those statements.

The risks included here are not exhaustive. Other sections of this report may include additional factors that could adversely affect our business and financial performance. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is not possible for management to predict all such risk factors, nor can it assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. Given these risks and uncertainties, investors should not place undue reliance on forward-looking statements as a prediction of actual results.

Recently Issued Accounting Pronouncements

Please refer to Note 2 in the accompanying footnotes to our Consolidated Financial Statements.

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ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

(Unaudited, dollar amounts in thousands)

Market risk includes risks that arise from changes in interest rates, credit, commodity prices, equity prices and other market changes that affect market sensitive instruments. In pursuing our business plan, we expect that the primary market risks to which we will be exposed are real estate, interest rate and credit risks. These risks are highly sensitive to many factors, including governmental monetary and tax policies, domestic and international economic and political considerations and other factors that are beyond our control.

Real Estate Risk

Commercial property values and net operating income derived from such properties are subject to volatility and may be affected adversely by a number of factors, including, but not limited to, national, regional and local economic conditions, local real estate conditions (such as an oversupply of retail, industrial, office or other commercial or multi-family space), changes or continued weakness in specific industry segments, construction quality, age and design, demographic factors, retroactive changes to building or similar codes, and increases in operating expenses (such as energy costs). We may seek to mitigate these risks by employing careful business selection, rigorous underwriting and credit approval processes and attentive asset management.

Interest Rate Risk

Interest rate risk is highly sensitive to many factors, including governmental monetary and tax policies, domestic and international economic and political considerations and other factors beyond our control. Our operating results will depend in large part on differences between the income from our assets and our borrowing costs. Our real estate assets generate income principally from fixed long-term leases and we are exposed to changes in interest rates primarily from floating rate borrowing arrangements. We expect that we will primarily finance our investments in commercial real estate with fixed rate, senior unsecured debt, however, to the extent that we use floating rate borrowing arrangements, our net income from our real estate investments will generally decrease if LIBOR increases. We have used, and may continue to use, interest rate caps or swaps and forward starting swaps to manage our exposure to interest rate changes. We may also employ forward starting derivative instruments to hedge qualifying anticipated transactions. We currently have a 2015 Revolving Credit Facility, several term loans and one mortgage note which are based upon a floating rate which have an aggregate outstanding balance of $1,757,358 at March 31, 2018, of which $1,464,815 is hedged effectively by interest rate swaps which we believe will mitigate the interest rate risk related to these borrowings.

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The following chart shows our floating rate debt instruments, including debt that is hedged by interest rate swaps, and the related interest rates, maturity dates and balances as of March 31, 2018:

Floating Rate Debt Instrument	Stated Interest Rate		Effective Interest Rate 1		Maturity Date	Balance at March 31, 2018
2015 Revolving Credit Facility2	2.89	%	2.89	%	1/8/2020	$	275,000
2015 Revolving Credit Facility - Multicurrency tranche2	1.32	%	1.32	%	1/8/2020	17,543
3-Year Term Loan	2.91	%	2.33	%	1/8/2019	300,000
5-Year Term Loan	2.91	%	2.70	%	1/8/2021	750,000
7-Year Term Loan	2.76	%	3.00	%	1/9/2023	400,000
Mortgage note payable - Waco	3.77	%	4.75	%	12/19/2020	14,815
Total Floating Rate Debt Instruments						$	1,757,358

1. Represents the rate at which interest expense is recorded for financial reporting purposes as of March 31, 2018, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

2. These floating rate debt instruments are not hedged by interest rate swaps.

The following chart shows a hypothetical 100 basis point increase in interest rates along the entire interest rate curve for the interest rate risk related to the 2015 Revolving Credit Facility:

Change in LIBOR	Projected Decrease in Net Income
Base case
+100 bps	$	(739	)
+200 bps	$	(1,479	)
+300 bps	$	(2,218	)

Credit Risk

Credit risk refers to the ability of each tenant in our portfolio of real estate investments to make contractual lease payments on the scheduled due dates. We seek to reduce credit risk of our real estate investments by entering into long-term leases with tenants after a careful evaluation of credit worthiness as part of our property acquisition process. If defaults occur, we employ our asset management resources to mitigate the severity of any losses and seek to relet the property. In the event of a significant rising interest rate environment and/or economic downturn, tenant delinquencies and defaults may increase and result in credit losses that would materially and adversely affect our business, financial condition and results of operations.

Foreign Currency Exchange Rate Risk

During the periods presented, we had investments, either directly or through unconsolidated equity interests, in Europe and Asia, and we perform asset management services and have capital commitments to an equity investment in Europe. As a result, we are subject to exchange rate risk from the effects of exchange rate movements in the euro and the British pound sterling, which may affect future costs and cash flows. We hedge our foreign currency exposure related to our foreign investments primarily by financing our investments in the local currency denominations and through the use of net investment hedge instruments. Additionally, we may enter into foreign currency forward contracts to manage our exposure to foreign currency exchange rate movements. We are currently a net payer of various foreign currencies (we pay out more cash than we receive) due to our commitments to the Gramercy European Property Fund III, and therefore our foreign operations benefit from a weaker U.S. dollar, and are adversely affected by a stronger U.S.

62

dollar, relative to the foreign currency. In 2017, we were a net receiver of various foreign currencies as our commitments to the Gramercy European Property Fund were fully funded and, in July 2017, the assets in the Gramercy European Property Fund as well as our interest in the Goodman Europe JV were sold to a third party.

As of March 31, 2018 and December 31, 2017, we had outstanding borrowings of $17,543 (€4,000 and £9,000) and $12,162 (€0 and £9,000), respectively, under the multicurrency tranche of our 2015 Revolving Credit Facility, which we designated as a non-derivative net investment hedging instrument pursuant to ASC 815 to mitigate our risk from fluctuations in the exchange rates between the U.S. dollar and both the euro, prior to the aforementioned sale of our euro-denominated investments, and British pound sterling. Our unhedged net investment in foreign currencies was $3,800 and $6,555 as of March 31, 2018 and December 31, 2017, respectively, based on the period ending U.S. dollar values of the hedge of $17,543 and $12,162, respectively.

63

ITEM 4. CONTROLS AND PROCEDURES

Gramercy Property Trust

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time frame specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow for timely decisions regarding required disclosure based closely on the definition of “disclosure controls and procedures” in Rule 13a-15(e). Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within our company to disclose material information otherwise required to be set forth in our periodic reports. Also, we have investments in certain unconsolidated entities. As we do not control these entities, our disclosure controls and procedures with respect to such entities are necessarily substantially more limited than those we maintain with respect to our consolidated subsidiaries.

As of the end of the period covered by this report, we carried out an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation of such internal control that occurred during our last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

GPT Operating Partnership LP

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time frame specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including the Chief Executive Officer and Chief Financial Officer of the Company in its role as the sole general partner of the Operating Partnership, as appropriate, to allow for timely decisions regarding required disclosure based closely on the definition of “disclosure controls and procedures” in Rule 13a-15(e). Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within our company to disclose material information otherwise required to be set forth in our periodic reports. Also, we have investments in certain unconsolidated entities. As we do not control these entities, our disclosure controls and procedures with respect to such entities are necessarily substantially more limited than those we maintain with respect to our consolidated subsidiaries.

As of the end of the period covered by this report, we carried out an evaluation under the supervision and with the participation of our management, including the Chief Executive Officer and the Chief Financial Officer of the Company, of the effectiveness of the design and operation of our disclosure controls and procedures. Based upon that evaluation,

64

the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in connection with the evaluation of such internal control that occurred during our last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

65

PART II OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

We and/or one or more of our subsidiaries are party to various litigation matters that are considered routine litigation incidental to our or their business, none of which are considered material.

ITEM 1A. RISK FACTORS 

There have been no material changes to the risk factors as disclosed in the section entitled “Risk Factors” beginning on page 11 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2017 and filed with the SEC. Please review the Risk Factors set forth in the Form 10-K.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

66

ITEM 6. INDEX TO EXHIBITS  

Exhibit No.	Description
31.1	Certification by the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2	Certification by the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.3	Certification by the Chief Executive Officer of the Company, the sole general partner of the Operating Partnership, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.4	Certification by the Chief Financial Officer of the Company, the sole general partner of the Operating Partnership, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.1	Certification by the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
32.2	Certification by the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
32.3	Certification by the Chief Executive Officer of the Company, the sole general partner of the Operating Partnership pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
32.4	Certification by the Chief Financial Officer of the Company, the sole general partner of the Operating Partnership pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, furnished herewith.
101.INS	XBRL Instance Document, filed herewith.
101.SCH	XBRL Taxonomy Extension Schema, filed herewith.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase, filed herewith.
101.DEF	XBRL Taxonomy Extension Definition Linkbase, filed herewith.
101.LAB	XBRL Taxonomy Extension Label Linkbase, filed herewith.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase, filed herewith.

67

SIGNATURES 

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

	GRAMERCY PROPERTY TRUST
Dated: May 1, 2018	/s/ Jon W. Clark
	Name: Jon W. Clark
	Title: Chief Financial Officer (duly authorized officer and principal financial and accounting officer)

68

SIGNATURES 

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

	GPT Operating Partnership LP
Dated: May 1, 2018	/s/ Jon W. Clark
	Name: Jon W. Clark
	Title: Chief Financial Officer, Gramercy Property Trust, the sole general partner of the Operating Partnership (duly authorized officer and principal financial and accounting officer)

69

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Gordon F. DuGan, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Gramercy Property Trust (the “registrant”);

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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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 change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) 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: May 1, 2018
	/s/	Gordon F. DuGan
	Name: Gordon F. DuGan
	Title: Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION 

I, Jon W. Clark, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Gramercy Property Trust (the “registrant”);

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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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 change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) 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: May 1, 2018
	/s/	Jon W. Clark
	Name: Jon W. Clark
	Title: Chief Financial Officer

EX-31.3

Exhibit 31.3

CERTIFICATION

I, Gordon F. DuGan, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of GPT Operating Partnership LP (the “registrant”);

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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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 change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) 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: May 1, 2018
	/s/	Gordon F. DuGan
	Name: Gordon F. DuGan
	Title: Chief Executive Officer, Gramercy Property Trust, the general partner of the registrant

EX-31.4

Exhibit 31.4

CERTIFICATION 

I, Jon W. Clark, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of GPT Operating Partnership LP (the “registrant”);

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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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 change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) 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: May 1, 2018
	/s/	Jon W. Clark
	Name: Jon W. Clark
	Title: Chief Financial Officer, Gramercy Property Trust, the general partner of the registrant

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Gramercy Property Trust (the “Company”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gordon F. DuGan, Chief Executive Officer of the Company, hereby 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), as applicable, of the Securities Exchange Act of 1934, as amended; and

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

/s/	Gordon F. DuGan
Name: Gordon F. DuGan
Title: Chief Executive Officer

Date: May 1, 2018

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Gramercy Property Trust (the “Company”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jon W. Clark, Chief Financial Officer of the Company, hereby 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), as applicable, of the Securities Exchange Act of 1934, as amended; and

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

/s/	Jon W. Clark
Name: Jon W. Clark
Title: Chief Financial Officer

Date: May 1, 2018

EX-32.3

Exhibit 32.3

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of GPT Operating Partnership LP (the “Operating Partnership”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gordon F. DuGan, Chief Executive Officer of Gramercy Property Trust, the sole general partner of the Operating Partnership, hereby 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), as applicable, of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership. 

/s/	Gordon F. DuGan
Name: Gordon F. DuGan
Title: Chief Executive Officer, Gramercy Property Trust, the general partner of the registrant

Date: May 1, 2018

EX-32.4

Exhibit 32.4

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of GPT Operating Partnership LP (the “Operating Partnership”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jon W. Clark, Chief Financial Officer of Gramercy Property Trust, the sole general partner of the Operating Partnership, hereby 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), as applicable, of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership.

/s/	Jon W. Clark
Name: Jon W. Clark
Title: Chief Financial Officer, Gramercy Property Trust, the general partner of the registrant

Date: May 1, 2018

XML

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 27, 2018
Document Information [Line Items]
Entity Registrant Name	Gramercy Property Trust
Entity Central Index Key	0001297587
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Trading Symbol	gpt
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		160,785,498
GPT Operating Partnership LP
Document Information [Line Items]
Entity Registrant Name	GPT Operating Partnership LP
Entity Central Index Key	0001708204
Entity Filer Category	Non-accelerated Filer

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Real estate investments, at cost:
Land	$ 1,009,568	$ 1,023,908
Building and improvements	4,821,301	4,863,916
Less: accumulated depreciation	(368,815)	(333,151)
Total real estate investments, net	5,462,054	5,554,673
Cash and cash equivalents	41,964	30,231
Restricted cash	15,041	12,723
Investment in unconsolidated equity investments	99,113	70,214
Assets held for sale, net	402	402
Tenant and other receivables, net	92,525	88,750
Acquired lease assets, net of accumulated amortization of $241,939 and $220,473	563,213	598,559
Other assets	127,664	100,484
Total assets	6,401,976	6,456,036
Liabilities:
Senior unsecured revolving credit facility	292,543	357,162
Mortgage notes payable, net	559,473	563,521
Total long-term debt, net	2,797,144	2,865,620
Accounts payable and accrued expenses	60,151	59,619
Dividends payable	62,380	61,971
Below market lease liabilities, net of accumulated amortization of $31,201 and $28,978	159,544	166,491
Other liabilities	55,873	50,002
Total liabilities	3,135,092	3,203,703
Commitments and contingencies
Noncontrolling interest in the Operating Partnership	137,800	113,530
Equity:
Common shares, par value $0.01, 160,782,765 and 160,686,822 issued and outstanding at March 31, 2018 and December 31, 2017, respectively	1,608	1,607
Series A cumulative redeemable preferred shares, par value $0.01, liquidation preference $87,500, and 3,500,000 shares authorized, issued and outstanding at March 31, 2018 and December 31, 2017	84,394	84,394
Additional paid-in-capital	4,411,605	4,409,677
Accumulated other comprehensive income	35,667	12,776
Accumulated deficit	(1,404,416)	(1,369,872)
Total shareholders' equity	3,128,858	3,138,582
Noncontrolling interest in other entities	226	221
Total equity	3,129,084	3,138,803
Partners’ Capital:
Accumulated other comprehensive loss	35,667	12,776
Total liabilities and equity	6,401,976	6,456,036
Senior unsecured notes, net [Member]
Liabilities:
Unsecured debt	496,887	496,785
Senior unsecured term loans
Liabilities:
Unsecured debt	1,448,241	1,448,152
GPT Operating Partnership LP
Real estate investments, at cost:
Land	1,009,568	1,023,908
Building and improvements	4,821,301	4,863,916
Less: accumulated depreciation	(368,815)	(333,151)
Total real estate investments, net	5,462,054	5,554,673
Cash and cash equivalents	41,964	30,231
Restricted cash	15,041	12,723
Investment in unconsolidated equity investments	99,113	70,214
Assets held for sale, net	402	402
Tenant and other receivables, net	92,525	88,750
Acquired lease assets, net of accumulated amortization of $241,939 and $220,473	563,213	598,559
Other assets	127,664	100,484
Total assets	6,401,976	6,456,036
Liabilities:
Senior unsecured revolving credit facility	292,543	357,162
Mortgage notes payable, net	559,473	563,521
Total long-term debt, net	2,797,144	2,865,620
Accounts payable and accrued expenses	60,151	59,619
Dividends payable	62,380	61,971
Below market lease liabilities, net of accumulated amortization of $31,201 and $28,978	159,544	166,491
Other liabilities	55,873	50,002
Total liabilities	3,135,092	3,203,703
Commitments and contingencies
Noncontrolling interest in the Operating Partnership	137,800	113,530
Equity:
Accumulated other comprehensive income	35,667	12,776
Partners’ Capital:
Series A cumulative redeemable preferred units, liquidation preference $87,500, and 3,500,000 units issued and outstanding at March 31, 2018 and December 31, 2017	84,394	84,394
GPT partners’ capital (1,658,060 and 1,650,858 general partner common units and 159,124,705 and 159,035,964 limited partner common units outstanding at March 31, 2018 and December 31, 2017, respectively)	3,008,797	3,041,412
Accumulated other comprehensive loss	35,667	12,776
Total GPTOP partners' capital	3,128,858	3,138,582
Noncontrolling interest in other entities	226	221
Total partners’ capital	3,129,084	3,138,803
Total liabilities and equity	6,401,976	6,456,036
GPT Operating Partnership LP | Senior unsecured notes, net [Member]
Liabilities:
Unsecured debt	496,887	496,785
GPT Operating Partnership LP | Senior unsecured term loans
Liabilities:
Unsecured debt	$ 1,448,241	$ 1,448,152

XML

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Acquired lease assets, accumulated amortization (in dollars)	$ 241,939	$ 220,473
Below market lease liabilities, accumulated amortization (in dollars)	$ 31,201	$ 28,978
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares issued	160,782,765	160,686,822
Common stock, shares outstanding	160,782,765	160,686,822
Cumulative redeemable preferred stock, shares authorized	10,000,000	10,000,000
Cumulative redeemable preferred stock, shares outstanding	3,500,000
Series A Preferred Stock
Cumulative redeemable preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Cumulative redeemable preferred stock, liquidation preference (in dollars)	$ 87,500	$ 87,500
Cumulative redeemable preferred stock, shares authorized	3,500,000	3,500,000
Cumulative redeemable preferred stock, shares issued	3,500,000	3,500,000
Cumulative redeemable preferred stock, shares outstanding	3,500,000	3,500,000
GPT Operating Partnership LP
Acquired lease assets, accumulated amortization (in dollars)	$ 241,939	$ 220,473
Below market lease liabilities, accumulated amortization (in dollars)	31,201	28,978
Series A cumulative redeemable preferred units, liquidation preference (in dollars)	$ 87,500	$ 87,500
Series A cumulative redeemable preferred units, units issued	3,500,000	3,500,000
Series A cumulative redeemable preferred units, units outstanding	3,500,000	3,500,000
General partners' capital, units issued	1,658,060	1,650,858
Limited partners' capital, units issued	159,124,705	159,035,964
General partners' capital, units outstanding	1,658,060	1,650,858
Limited partners' capital, units outstanding	159,124,705	159,035,964
Noncontrolling Interest | GPT Operating Partnership LP
Limited partners' capital, units outstanding	5,388,995	4,398,935

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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues
Rental revenue	$ 122,245	$ 103,282
Operating expense reimbursements	23,310	20,368
Third-party management fees	2,790	4,592
Other income	1,135	1,752
Total revenues	149,480	129,994
Operating Expenses
Depreciation and amortization	71,516	62,217
Property operating expenses	27,088	23,186
General and administrative expenses	9,686	8,756
Property management expenses	2,542	3,084
Total operating expenses	110,832	97,243
Operating income	38,648	32,751
Other Expenses:
Interest expense	(25,492)	(23,056)
Other-than-temporary impairment	0	(4,081)
Portion of impairment recognized in other comprehensive loss	0	(809)
Net impairment recognized in earnings	0	(4,890)
Equity in net loss of unconsolidated equity investments	(926)	(94)
Loss on extinguishment of debt	0	(208)
Impairment of real estate investments	0	(12,771)
Income (loss) from continuing operations before provision for taxes	12,230	(8,268)
Provision for taxes	(621)	196
Income (loss) from continuing operations	11,609	(8,072)
Loss from discontinued operations	0	(24)
Net income (loss) before net gain on disposals	11,609	(8,096)
Net gain on disposals	16,255	17,377
Net income	27,864	9,281
Net income attributable to noncontrolling interest	(802)	(154)
Net income attributable to Gramercy Property Trust	27,062	9,127
Preferred share dividends	(1,559)	(1,559)
Net income available to common shareholders	$ 25,503	$ 7,568
Basic earnings per share:
Net income from continuing operations, after preferred dividends (in usd per share)	$ 0.16	$ 0.05
Net income (loss) from discontinued operations (in usd per share)	0.00	0.00
Net income available to common stockholders (in usd per share)	0.16	0.05
Diluted earnings per share:
Net income from continuing operations, after preferred dividends (in usd per share)	0.16	0.05
Net income (loss) from discontinued operations (in usd per share)	0.00	0.00
Net income available to common stockholders (in usd per share)	$ 0.16	$ 0.05
Basic weighted average common shares outstanding (in shares)	160,408,136	140,907,399
Diluted weighted average common shares and common share equivalents outstanding (in shares)	160,416,900	141,875,619
GPT Operating Partnership LP
Revenues
Rental revenue	$ 122,245	$ 103,282
Operating expense reimbursements	23,310	20,368
Third-party management fees	2,790	4,592
Other income	1,135	1,752
Total revenues	149,480	129,994
Operating Expenses
Depreciation and amortization	71,516	62,217
Property operating expenses	27,088	23,186
General and administrative expenses	9,686	8,756
Property management expenses	2,542	3,084
Total operating expenses	110,832	97,243
Operating income	38,648	32,751
Other Expenses:
Interest expense	(25,492)	(23,056)
Other-than-temporary impairment	0	(4,081)
Portion of impairment recognized in other comprehensive loss	0	(809)
Net impairment recognized in earnings	0	(4,890)
Equity in net loss of unconsolidated equity investments	(926)	(94)
Loss on extinguishment of debt	0	(208)
Impairment of real estate investments	0	(12,771)
Income (loss) from continuing operations before provision for taxes	12,230	(8,268)
Provision for taxes	(621)	196
Income (loss) from continuing operations	11,609	(8,072)
Loss from discontinued operations	0	(24)
Net income (loss) before net gain on disposals	11,609	(8,096)
Net gain on disposals	16,255	17,377
Net income	27,864	9,281
Net income attributable to noncontrolling interest in other partnerships	0	(120)
Net income attributable to Gramercy Property Trust	27,864	9,161
Preferred share dividends	(1,559)	(1,559)
Net income available to common unitholders	$ 26,305	$ 7,602
Basic earnings per unit:
Net income from continuing operations, after preferred unit distributions basic (in usd per unit)	$ 0.16	$ 0.05
Net income (loss) from discontinued operations, basic (in usd per unit)	0.00	0.00
Net income available to common unitholders, basic (in usd per unit)	0.16	0.05
Diluted earnings per unit:
Net income from continuing operations, after preferred unit distributions, diluted (in usd per unit)	0.16	0.05
Net income (loss) from discontinued operations, diluted (in usd per unit)	0.00	0.00
Net income available to common unitholders, diluted (in usd per unit)	$ 0.16	$ 0.05
Basic weighted average common units outstanding (in units)	165,448,866	141,527,985
Diluted weighted average common units outstanding (in units)	165,457,630	142,496,205

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Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 27,864	$ 9,281
Other comprehensive income (loss):
Unrealized loss on available for sale debt securities	(48)	(2,820)
Cumulative effect of accounting change	103	0
Unrealized gain on derivative instruments	22,050	4,378
Reclassification of unrealized gain on terminated derivative instruments into earnings	268	268
Foreign currency translation adjustments	518	691
Other comprehensive income	22,891	2,517
Comprehensive income	50,755	11,798
Net income attributable to noncontrolling interest	(802)	(154)
Other comprehensive (income) loss attributable to noncontrolling interest	697	(11)
Comprehensive income attributable to Gramercy Property Trust	50,650	11,633
GPT Operating Partnership LP
Net income	27,864	9,281
Other comprehensive income (loss):
Unrealized loss on available for sale debt securities	(48)	(2,820)
Cumulative effect of accounting change	103	0
Unrealized gain on derivative instruments	22,050	4,378
Reclassification of unrealized gain on terminated derivative instruments into earnings	268	268
Foreign currency translation adjustments	518	691
Other comprehensive income	22,891	2,517
Comprehensive income	50,755	11,798
Net income attributable to noncontrolling interest in other partnerships	0	(120)
Comprehensive income attributable to Gramercy Property Trust	$ 50,755	$ 11,678

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Condensed Consolidated Statements of Shareholders' Equity (Deficit) and Noncontrolling Interests - USD ($) $ in Thousands	Total	Total Gramercy Property Trust	Common Shares	Preferred Shares	Additional Paid-In-Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings / (Accumulated Deficit)	Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of accounting changes	$ 663	$ 663				$ 103	$ 560
Balance (in shares) at Dec. 31, 2017	160,686,822		160,686,822
Balance at Dec. 31, 2017	$ 3,138,803	3,138,582	$ 1,607	$ 84,394	$ 4,409,677	12,776	(1,369,872)	$ 221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,062	27,062					27,062	0
Change in net unrealized gain on derivative instruments	22,050	22,050				22,050
Change in net unrealized loss on debt securities	(48)	(48)				(48)
Reclassification of unrealized gain on terminated derivative instruments into earnings	268	268				268
Offering costs	(39)	(39)			(39)
Share based compensation - fair value (in shares)			88,094
Share based compensation - fair value	$ 2,024	2,024	$ 1		2,023
Dividend reinvestment program proceeds (in shares)	1,811		1,811
Dividend reinvestment program proceeds	$ 46	46			46
Conversion of OP Units to commons shares (in shares)			6,038
Conversion of OP Units to common shares	130	130	$ 0		130
Reallocation of noncontrolling interest in the Operating Partnership	(232)	(232)			(232)
Other Comprehensive Income (Loss), Foreign Currency Transaction And Translation Gain (Loss) Arising During Period, Including Portion Attributable To NCI, Net Of Tax	518	518				518		0
Contributions to noncontrolling interest in other partnerships	5							5
Dividends on preferred shares	(1,559)	(1,559)					(1,559)
Dividends on common shares	$ (60,607)	(60,607)					(60,607)
Balance (in shares) at Mar. 31, 2018	160,782,765		160,782,765
Balance at Mar. 31, 2018	$ 3,129,084	$ 3,128,858	$ 1,608	$ 84,394	$ 4,411,605	$ 35,667	$ (1,404,416)	$ 226

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Condensed Consolidated Statements of Partners' Capital - USD ($) $ in Thousands	Total	GPT Operating Partnership LP	GPT Operating Partnership LP Total GPTOP	GPT Operating Partnership LP Partners' Interest	GPT Operating Partnership LP Series A Preferred Units	GPT Operating Partnership LP Accumulated Other Comprehensive Income (Loss)	GPT Operating Partnership LP Noncontrolling Interest
Increase (Decrease) in Partners' Capital [Roll Forward]
Cumulative effect of accounting changes	$ 663	$ 663	$ 663	$ 560		$ 103
Beginning balance (in units) at Dec. 31, 2017				160,686,822
Beginning balance at Dec. 31, 2017		3,138,803	3,138,582	$ 3,041,412	$ 84,394	12,776	$ 221
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income	27,062	27,062	27,062	27,062			0
Change in net unrealized gain on derivative instruments	22,050	22,050	22,050			22,050
Change in net unrealized loss on debt securities	(48)	(48)	(48)			(48)
Reclassification of unrealized gain on terminated derivative instruments into earnings	268	268	268			268
Offering costs		(39)	(39)	$ (39)
Share based compensation - fair value (in units)				88,094
Share based compensation - fair value		2,024	2,024	$ 2,024
Distribution reinvestment program proceeds (in units)				1,811
Distribution reinvestment program proceeds		46	46	$ 46
Conversion of OP Units to common unit (in units)				6,038
Conversion of OP Units to common units		130	130	$ 130
Reallocation of noncontrolling interest in the Operating Partnership	(232)	(232)	(232)	(232)
Foreign currency translation adjustment		518	518			518	0
Contributions to noncontrolling interest in other partnerships	$ 5	5					$ 5
Distributions on preferred units		(1,559)	(1,559)	(1,559)
Distributions on common units		$ (60,607)	(60,607)	$ (60,607)
Ending balance (in units) at Mar. 31, 2018		160,782,765		160,782,765			5,388,995
Ending balance at Mar. 31, 2018		$ 3,129,084	$ 3,128,858	$ 3,008,797	$ 84,394	$ 35,667	$ 226

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Activities:
Net income	$ 27,864	$ 9,281
Adjustments to net cash provided by operating activities:
Depreciation and amortization	71,516	62,217
Amortization of market lease intangibles	(392)	(547)
Amortization of deferred costs	825	615
Amortization of discounts and other fees	(632)	(409)
Straight-line rent adjustment	(7,025)	(7,260)
Other-than-temporary impairment on retained bonds	0	4,890
Impairment of real estate investments	0	12,771
Net gain on disposals	(16,255)	(17,377)
Distributions received from unconsolidated equity investments	0	352
Equity in net loss of unconsolidated equity investments	926	94
Loss on extinguishment of debt	0	208
Amortization of share-based compensation	1,856	2,054
Changes in operating assets and liabilities:
Payment of capitalized leasing costs	(4,526)	(3,790)
Tenant and other receivables	3,253	11,707
Other assets	(1,401)	(4,368)
Accounts payable and accrued expenses	(8,050)	(9,755)
Other liabilities	4,864	(2,204)
Net cash provided by operating activities	72,823	58,479
Investing Activities:
Capital expenditures	(17,825)	(18,429)
Proceeds from sales of real estate	108,032	33,053
Contributions to unconsolidated equity investments	(5,856)	(2,650)
Acquisition of real estate	(10,971)	(99,612)
Net cash provided by (used in) investing activities	73,380	(87,638)
Financing Activities:
Proceeds from unsecured term loan and credit facility	164,922	60,000
Repayment of unsecured term loans and credit facility	(230,000)	(5,000)
Proceeds from mortgage notes payable	0	2,582
Repayment of mortgage notes payable	(3,545)	(3,915)
Offering costs	0	(606)
Proceeds from sale of common shares	0	20,081
Payment of deferred financing costs	0	(252)
Preferred share dividends paid	(1,559)	(1,559)
Common share dividends paid	(60,568)	(53,025)
Distribution to noncontrolling interest in the Operating Partnership	(1,402)	(118)
Other financing activities	(138)	0
Net cash provided by (used in) financing activities	(132,290)	18,188
Net increase (decrease) in cash, cash equivalents, and restricted cash	13,913	(10,971)
Increase (decrease) in cash, cash equivalents, and restricted cash related to foreign currency translation	138	(105)
Cash, cash equivalents, and restricted cash at beginning of period	42,954	80,433
Cash, cash equivalents, and restricted cash at end of period	57,005	69,357
GPT Operating Partnership LP
Operating Activities:
Net income	27,864	9,281
Adjustments to net cash provided by operating activities:
Depreciation and amortization	71,516	62,217
Amortization of market lease intangibles	(392)	(547)
Amortization of deferred costs	825	615
Amortization of discounts and other fees	(632)	(409)
Straight-line rent adjustment	(7,025)	(7,260)
Other-than-temporary impairment on retained bonds	0	4,890
Impairment of real estate investments	0	12,771
Net gain on disposals	(16,255)	(17,377)
Distributions received from unconsolidated equity investments	0	352
Equity in net loss of unconsolidated equity investments	926	94
Loss on extinguishment of debt	0	208
Amortization of share-based compensation	1,856	2,054
Changes in operating assets and liabilities:
Payment of capitalized leasing costs	(4,526)	(3,790)
Tenant and other receivables	3,253	11,707
Other assets	(1,401)	(4,368)
Accounts payable and accrued expenses	(8,050)	(9,755)
Other liabilities	4,864	(2,204)
Net cash provided by operating activities	72,823	58,479
Investing Activities:
Capital expenditures	(17,825)	(18,429)
Proceeds from sales of real estate	108,032	33,053
Contributions to unconsolidated equity investments	(5,856)	(2,650)
Acquisition of real estate	(10,971)	(99,612)
Net cash provided by (used in) investing activities	73,380	(87,638)
Financing Activities:
Proceeds from unsecured term loan and credit facility	164,922	60,000
Repayment of unsecured term loans and credit facility	(230,000)	(5,000)
Proceeds from mortgage notes payable	0	2,582
Repayment of mortgage notes payable	(3,545)	(3,915)
Offering costs	0	(606)
Proceeds from sale of common shares	0	20,081
Payment of deferred financing costs	0	(252)
Preferred share dividends paid	(1,559)	(1,559)
Common share dividends paid	(60,568)	(53,025)
Distribution to noncontrolling interest in the Operating Partnership	(1,402)	(118)
Other financing activities	(138)	0
Net cash provided by (used in) financing activities	(132,290)	18,188
Net increase (decrease) in cash, cash equivalents, and restricted cash	13,913	(10,971)
Increase (decrease) in cash, cash equivalents, and restricted cash related to foreign currency translation	138	(105)
Cash, cash equivalents, and restricted cash at beginning of period	42,954	80,433
Cash, cash equivalents, and restricted cash at end of period	$ 57,005	$ 69,357

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Business and Organization

3 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Business and Organization

Business and Organization

Gramercy Property Trust, or the Company or Gramercy, a Maryland real estate investment trust, or REIT, together with its subsidiary, GPT Operating Partnership LP, or the Operating Partnership, is a leading global investor and asset manager of commercial real estate. Gramercy specializes in acquiring and managing high quality, income producing commercial real estate leased to high quality tenants in major markets in the United States and Europe.

Gramercy earns revenues primarily through rental revenues on properties that it owns in the United States. The Company also owns unconsolidated equity investments in the United States, Europe, and Asia. The Company's operations are conducted primarily through the Operating Partnership. As of March 31, 2018, third-party holders of limited partnership interests owned approximately 3.25% of the Operating Partnership. These interests are referred to as the noncontrolling interests in the Operating Partnership. See Note 11 for more information on the Company’s noncontrolling interests.

As of March 31, 2018, the Company’s wholly-owned portfolio consisted of 362 properties comprising 80,884,942 rentable square feet with 97.3% occupancy. As of March 31, 2018, the Company had ownership interests in 20 properties held in unconsolidated equity investments in the United States and Europe and one property held through the investment in CBRE Strategic Partners Asia. As of March 31, 2018, the Company managed approximately $1,960,000 of commercial real estate assets, including approximately $1,408,000 of assets in Europe.

During the three months endedMarch 31, 2018, the Company acquired one property with 162,056 square feet for a purchase price of approximately $10,550 and placed one development property into service with 126,722 square feet. During the three months endedMarch 31, 2018, the Company sold five properties and one warehouse from another asset aggregating 1,546,091 square feet for total gross proceeds of approximately $111,012.

Unless the context requires otherwise, all references to “Company," "Gramercy,” “we,” “our” and “us” mean Gramercy Property Trust and its subsidiaries, including the Operating Partnership and its consolidated subsidiaries.

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Real Estate Investments

3 Months Ended

Mar. 31, 2018

Real Estate [Abstract]

Real Estate Investments

Real Estate Investments

Investments in real estate properties consisted of the following:

	March 31, 2018					December 31, 2017
	Square feet1	Number of properties	Investment			Square feet1	Number of properties	Investment
Operating properties2	80,884,942	360	$	5,811,702		82,146,063	363	$	5,857,906
Land parcels		2	7,075				2	7,075
Less accumulated depreciation			(368,815		)			(333,151		)
Total operating properties and land parcels			$	5,449,962				$	5,531,830
Development properties	1,503,300	5	12,092			1,630,022	6	22,843
Total	82,388,242	367	$	5,462,054		83,776,085	371	$	5,554,673

1. Represents rentable square feet for operating properties and projected rentable square feet upon completion for development properties.

2. Includes development properties that have been completed as of the end of the period.

Acquisitions:

Real estate acquisition activity for the three months ended March 31, 2018 and 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
Number of operating properties	1		7
Rentable square feet of operating properties	162,056		2,257,311
Total purchase price of all acquisitions	$	10,550	$	124,672

The total value of the properties acquired during the three months ended March 31, 2018 was comprised of $10,197 of real estate assets and $635 of intangible assets, including acquisition costs capitalized for the asset acquisitions. In addition to the operating property acquisition noted above, during the three months ended March 31, 2018 the Company also placed into service one development property which comprised 126,722 rentable square feet.

Dispositions:

Real estate disposition activity for the three months ended March 31, 2018 and 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
Number of properties1	5		7
Rentable square feet	1,546,091		487,872
Gross proceeds	$	111,012	$	51,683
Impairment of real estate investments related to asset dispositions during the period2	$	—	$	—
Net gain on disposals	$	16,255	$	17,377

1. During the three months ended March 31, 2018, the Company sold five properties and one warehouse from another asset.

2. Although there were no impairments recognized related to assets disposed during the three months ended March 31, 2018 and 2017, as presented in the table, the Company recognized impairments on real estate investments of $12,771 during the three months ended March 31, 2017 related to properties held as of March 31, 2017, for which the Company determined there were nonrecoverable declines in value.

Intangibles:

Intangible assets and liabilities consisted of the following:

	Weighted average amortization period (years)	March 31, 2018		December 31, 2017
Intangible assets:
In-place leases, net of accumulated amortization of $214,664 and $194,836	9.3	$	513,423	$	545,782
Above-market leases, net of accumulated amortization of $26,854 and $25,229	6.8	43,979		46,713
Below-market ground rent, net of accumulated amortization of $421 and $408	17.5	5,811		6,064
Total intangible assets		$	563,213	$	598,559
Intangible liabilities:
Below-market leases, net of accumulated amortization of $30,685 and $28,516	39.5	$	152,758	$	159,652
Above-market ground rent, net of accumulated amortization of $516 and $462	32.0	6,786		6,839
Total intangible liabilities		$	159,544	$	166,491

The following table provides the projected amortization expense of the intangible assets and liabilities for the next five years:

	April 1 to December 31, 2018			2019			2020			2021			2022
Depreciation and amortization expense	$	70,211		$	84,228		$	70,822		$	59,528		$	46,652
Rental revenue increase	$	(1,571	)	$	(2,520	)	$	(4,004	)	$	(4,168	)	$	(6,260	)

The Company recorded $26,159 and $24,172of amortization of in-place lease intangible assets as part of depreciation and amortization expense for the three months ended March 31, 2018 and 2017, respectively. The Company recorded $494 and $621of amortization of market lease intangible assets and liabilities as an increase to rental revenue for the three months ended March 31, 2018 and 2017, respectively.

Assets Held for Sale

In the normal course of business, the Company identifies non-strategic assets for sale. The Company separately classifies properties held for sale in its Consolidated Financial Statements. As of March 31, 2018 and December 31, 2017, the Company had one asset classified as held for sale, which had a net asset value of $402, all of which represented the value contained in real estate investments. Real estate investments to be disposed of are reported at the lower of carrying amount or estimated fair value, less costs to sell. Once an asset is classified as held for sale, depreciation and amortization expense is no longer recorded.

Discontinued Operations

The Company did not have significant discontinued operations for the three months ended March 31, 2018. The Company’s discontinued operations for the three months ended March 31, 2017 were related to the assets assumed in the Company’s merger transaction in 2015 and simultaneously designated as held for sale.

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Significant Accounting Policies

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

Basis of Quarterly Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In management’s opinion, all adjustments (consisting of normal recurring accruals) considered necessary for fair presentation have been included. The 2018 operating results for the period presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2017 of the Company and the Operating Partnership. The Consolidated Balance Sheets at December 31, 2017 were derived from the audited Consolidated Financial Statements at that date.

Reclassifications

Certain prior year balances have been reclassified to conform with the current year presentation. During the fourth quarter of 2017, the Company adopted Accounting Standards Update, or ASU, No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires restricted cash and cash equivalents to be included with cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown on the Consolidated Statements of Cash Flows. As a result of the adoption, net cash provided by operating activities changed by $235, net cash used in investing activities changed by $(947), and net cash provided by financing activities changed by $909, for the three months endedMarch 31, 2017.

Principles of Consolidation

The Consolidated Financial Statements include the Company’s accounts and those of the Company’s subsidiaries which are wholly-owned or controlled by the Company, or entities which are variable interest entities, or VIEs, in which the Company is the primary beneficiary. The primary beneficiary is the party that absorbs a majority of the VIE’s anticipated losses and/or a majority of the expected returns. The Company has evaluated its investments for potential classification as variable interests by evaluating the sufficiency of each entity’s equity investment at risk to absorb losses.

Entities which the Company does not control and are considered VIEs, but where the Company is not the primary beneficiary, are accounted for under the equity method. All significant intercompany balances and transactions have been eliminated. The equity interests of other limited partners in the Company’s Operating Partnership are reflected as noncontrolling interests. See Note 11 for more information on the Company’s noncontrolling interests.

Real Estate Investments

Real Estate Acquisitions

The Company evaluates its acquisitions of real estate, including equity interests in entities that predominantly hold real estate assets, to determine if the acquired assets meet the definition of a business and need to be accounted for as a business combination, or alternatively, should be accounted for as an asset acquisition. An integrated set of assets and activities acquired does not meet the definition of a business if either (i) substantially all the fair value of the gross assets acquired is concentrated in either a single identifiable asset or a group of similar identifiable assets, or (ii) the asset and activities acquired do not contain at least an input and a substantive process that together significantly contribute to the ability to create outputs. The Company expects that its acquisitions of real estate will continue to not meet the definition of a business.

Acquisitions of real estate that do not meet the definition of a business, including sale-leaseback transactions that have newly-originated leases and real estate investments under construction, or build-to-suit investments, are recorded as asset acquisitions. The accounting for asset acquisitions is similar to the accounting for business combinations, except that the acquisition consideration, including acquisition costs, is allocated to the individual assets acquired and liabilities assumed on a relative fair value basis. Based on this allocation methodology, asset acquisitions do not result in the recognition of goodwill or a bargain purchase. The Company incurs internal transaction costs, which are direct, incremental internal costs related to acquisitions, that are recorded within general and administrative expense. Additionally, for build-to-suit investments in which the Company may engage a developer to construct a property or provide funds to a tenant to develop a property, the Company capitalizes the funds provided to the developer/tenant and real estate taxes, if applicable, during the construction period.

To determine the fair value of assets acquired and liabilities assumed in an acquisition, which generally include land, building, improvements, and intangibles, such as the value of above- and below-market leases and origination costs associated with the in-place leases at the acquisition date, the Company utilizes various estimates, processes and information to determine the as-if-vacant property value. Estimates of value are made using customary methods, including data from appraisals, comparable sales, and discounted cash flow analyses. Estimates of future cash flows are based on a number of factors including the historical operating results, known trends, and market/economic conditions that may affect the property. The Company assesses the fair value of leases assumed at acquisition based upon estimated cash flow projections that utilize appropriate discount rates and available market information. Refer to the policy section "Intangible Assets and Liabilities" for more information on the Company’s accounting for intangibles.

Depreciation is computed using the straight-line method over the shorter of the estimated useful life at acquisition of the capitalized item or 40 years for buildings, five to ten years for building equipment and fixtures, and the lesser of the useful life or the remaining lease term for tenant improvements and leasehold interests. Maintenance and repair expenditures are charged to expense as incurred.

For transactions that qualify as business combinations, the Company recognizes the assets acquired and liabilities assumed at fair value, including the value of intangible assets and liabilities, and any excess or deficit of the consideration transferred relative to the fair value of the net assets acquired is recorded as goodwill or a bargain purchase gain, as appropriate. Acquisition costs of business combinations are expensed as incurred.

Capital Improvements

In leasing space, the Company may provide funding to the lessee through a tenant allowance. Certain improvements are capitalized when they are determined to increase the useful life of the building. During construction of qualifying projects, the Company capitalizes project management fees as permitted to be charged under the lease, if incremental and identifiable. In accounting for tenant allowances, the Company determines whether the allowance represents funding for the construction of leasehold improvements and evaluates the ownership of such improvements. If the Company is considered the owner of the leasehold improvements, the Company capitalizes the amount of the tenant allowance and depreciates it over the shorter of the useful life of the leasehold improvements or the lease term. If the tenant allowance represents a payment for a purpose other than funding leasehold improvements, or in the event the Company is not considered the owner of the improvements for accounting purposes, the allowance is considered to be a lease incentive and is recognized over the lease term as a reduction of rental revenue.

Impairments and Disposals

The Company reviews the recoverability of a property’s carrying value when circumstances indicate a possible impairment of the value of a property, such as an adverse change in future expected occupancy or a significant decrease in the market price of an asset. The review of recoverability is based on an estimate of the future undiscounted cash flows, excluding interest charges, expected to result from the property’s use and eventual disposition. These estimates consider factors such as changes in strategy resulting in an increased or decreased holding period, expected future operating income, market and other applicable trends and residual value, as well as the effects of leasing demand, competition and other factors. If management determines impairment exists due to the inability to recover the carrying value of a property, for properties to be held and used, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property and for assets held for sale, an impairment loss is recorded to the extent that the carrying value exceeds the fair value less estimated cost of disposal. These assessments are recorded as an impairment loss in the Consolidated Statements of Operations in the period the determination is made. The estimated fair value of the asset becomes its new cost basis. For a depreciable long-lived asset to be held and used, the new cost basis will be depreciated or amortized over the remaining useful life of that asset.

The Company recognizes sales of real estate properties upon closing, at which time the Company transfers control of the assets to the purchaser. Payments received from purchasers prior to closing are recorded as deposits. Profit on real estate sold is based on the transaction price and is recognized using the full accrual method upon closing.

Cash, Cash Equivalents, and Restricted Cash

The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. The Company's restricted cash primarily consists of reserves for certain capital improvements, leasing, interest and real estate tax and insurance payments as required by certain mortgage note obligations, as well as proceeds from property sales held by qualified intermediaries to be used for tax-deferred, like-kind exchanges under section 1031 of the Internal Revenue Code of 1986, as amended, or the Internal Revenue Code.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sums to the total of the same such amounts shown in the Consolidated Statements of Cash Flows.

	As of March 31,
	2018		2017
Cash and cash equivalents	$	41,964	$	56,256
Restricted cash	15,041		13,101
Total cash, cash equivalents, and restricted cash	$	57,005	$	69,357

Variable Interest Entities

The Company had five consolidated VIEs and two unconsolidated VIEs as of March 31, 2018 and December 31, 2017, which were determined based on the structure and control provisions of each entity.

The Company’s five consolidated VIEs as of March 31, 2018 and December 31, 2017 included the Operating Partnership and four land parcels in Fort Mill, South Carolina acquired by an investment entity formed in December 2017, on which it will fund the development of fourindustrial facilities, or the Lakemont Development Investment. The Company has a 95.0% interest in the Lakemont Development Investment and will acquire the seller’s retained 5.0% interest when the properties are developed and leased. As of March 31, 2018 and December 31, 2017, the Company’s carrying value of the Lakemont Development Investment was $4,674 and $4,584, respectively.

Unconsolidated VIEs

The Company’s two unconsolidated VIEs as of March 31, 2018 and December 31, 2017 included its retained non-investment grade subordinate bonds, preferred shares and ordinary shares of two collateralized debt obligations, or CDOs, which are collectively herein referred to as the Retained CDO Bonds. Refer to the “Other Assets” section of this Note 2 and also to Note 7 for more information on the accounting and valuation of the Retained CDO Bonds. As of March 31, 2018 and December 31, 2017, the Company’s carrying value of the Retained CDO Bonds was $5,800 and $5,527, respectively.

Tenant and Other Receivables

Tenant and other receivables are derived from rental revenue, tenant reimbursements, and management fees.

Rental revenue is recorded on a straight-line basis over the initial term of the lease. Since many leases provide for rental increases at specified intervals, straight-line basis accounting requires the Company to record a receivable, and include in revenues, unbilled rent receivables that will only be received if the tenant makes all rent payments required through the expiration of the initial term of the lease. Tenant and other receivables also include receivables related to tenant reimbursements for common area maintenance expenses and certain other recoverable expenses that are recognized as revenue in the period in which the related expenses are incurred.

Tenant and other receivables are recorded net of the allowances for doubtful accounts, which as of March 31, 2018 and December 31, 2017 were $670 and $638, respectively. The Company continually reviews receivables related to rent, tenant reimbursements, and management fees, including incentive fees, and determines collectability by taking into consideration the tenant or asset management clients’ payment history, the financial condition of the tenant or asset management client, business conditions in the industry in which the tenant or asset management client operates and economic conditions in the area in which the property or asset management client is located. In the event that the collectability of a receivable is in doubt, the Company increases the allowance for doubtful accounts or records a direct write-off of the receivable, as appropriate.

Intangible Assets and Liabilities

As discussed above in policy section, "Real Estate Acquisitions," the Company follows the acquisition method of accounting for its asset acquisitions and business combinations and thus allocates the purchase price of acquired properties to tangible and identifiable intangible assets acquired based on their respective fair values. Identifiable intangible assets include amounts allocated to acquired leases for above- and below-market lease rates and the value of in-place leases. Management also considers information obtained about each property as a result of its pre-acquisition due diligence.

Above-market and below-market lease values for properties acquired are recorded based on the present value of the difference between the contractual amount to be paid pursuant to each in-place lease and management’s estimate of the fair market lease rate for each such in-place lease, measured over a period equal to the remaining non-cancelable term of the lease. The present value calculation utilizes a discount rate that reflects the risks associated with the leases acquired. The above-market and below-market lease values are amortized as a reduction of and increase to rental revenue, respectively, over the remaining non-cancelable terms of the respective leases. If a tenant terminates its lease prior to its contractual expiration and no future rental payments will be received, any unamortized balance of the market lease intangibles will be written off to rental revenue.

The aggregate value of in-place leases represents the costs of leasing costs, other tenant related costs, and lost revenue that the Company did not have to incur by acquiring a property that is already occupied. Factors considered by management in its analysis of the in-place lease intangibles include an estimate of carrying costs during the expected lease-up period for each property taking into account current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the anticipated lease-up period. Management also estimates costs to execute similar leases including leasing commissions and other related expenses. The value of in-place leases is amortized to depreciation and amortization expense over the remaining non-cancelable term of the respective leases. In no event does the amortization period for intangible assets exceed the remaining depreciable life of the building. If a tenant terminates its lease prior to its contractual expiration and no future rental payments will be received, any unamortized balance of the in-place lease intangible will be written off to depreciation and amortization expense.

Above-market and below-market ground rent intangibles are recorded for properties acquired in which the Company is the lessee pursuant to a ground lease assumed at acquisition. The above-market and below-market ground rent intangibles are valued similarly to above-market and below-market leases, except that, because the Company is the lessee as opposed to the lessor, the above-market and below-market ground lease values are amortized as a reduction of and increase to rent expense, respectively, over the remaining non-cancelable terms of the respective leases.

Refer to Note 3 for further information on the Company’s intangible assets and liabilities.

Revenue

Adoption of ASC Topic 606, "Revenue from Contracts with Customers"

The Company adopted ASC Topic 606, which is described below in the section “Recently Issued Accounting Pronouncements,” on January 1, 2018 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under the new guidance, while prior period amounts are not adjusted and continue to be reported in accordance with the historic accounting guidance in ASC Topic 605. As a result of adoption, the Company recorded an increase to its opening retained earnings balance of $663 as of January 1, 2018, which represents the cumulative impact of the new guidance and is related to the Company’s sale of real estate to Strategic Office Partners in 2016. There was no impact to revenues recorded for the three months ended March 31, 2018 as a result of adoption of the new revenue guidance.

Revenue Recognition

The Company recognizes revenue when control of the promised goods or services is transferred to a customer, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company’s primary sources of revenue include rental revenue, third-party management fees, operating expense reimbursements, and other income, which are disaggregated on the Consolidated Statements of Operations and are described in detail below.

Real Estate Investments

Rental revenue from leases on real estate investments is recognized on a straight-line basis over the term of the lease, regardless of when payments are contractually due. For leases on properties that are under construction at the time of acquisition, the Company begins recognition of rental revenue upon completion of construction of the leased asset and delivery of the leased asset to the tenant.

The Company’s lease agreements with tenants also generally contain provisions that require tenants to reimburse the Company for real estate taxes, insurance costs, common area maintenance costs, and other property-related expenses. Under lease arrangements in which the Company is the primary obligor for these expenses, the Company recognizes such amounts as both revenues and operating expenses. Under lease arrangements in which the tenant pays these expenses directly, such amounts are not included in revenues or expenses. These reimbursement amounts are recognized in the period in which the related expenses are incurred.

Management Fees

The Company’s asset and property management agreements may contain provisions for fees related to dispositions, administration of the assets including fees related to accounting, valuation and legal services, and management of capital improvements or projects on the underlying assets. The Company recognizes revenue for fees pursuant to its management agreements in the period in which they are earned. Deferred revenue from management fees received prior to the date earned are included in other liabilities on the Consolidated Balance Sheets. For management fee agreements that include multiple performance obligations, the Company allocates revenue to each performance obligation based on its relative standalone selling price, which is primarily determined based on the prices charged to customers.

Certain of the Company’s asset management contracts and agreements with its unconsolidated equity investments include provisions that allow it to earn additional fees, generally described as incentive fees or promoted interests, based on the achievement of a targeted valuation or the achievement of a certain internal rate of return on the managed assets held by third parties or the equity investment. The Company’s incentive fees are accounted for as variable consideration and revenue is recognized for them based on the Company’s estimate of the expected amount to which it will be entitled in exchange for its services. The Company recognizes promoted interest in the period in which it is determined to be appropriately earned pursuant to the terms of the specific agreement. The values of incentive fees and promoted interest fees are periodically evaluated by management.

Other Income

Other income primarily consists of income accretion on the Company’s Retained CDO Bonds, realized foreign currency exchange gains (losses), and interest income.

Foreign Currency

The Company's European management platform performs asset and property management services in Europe. The Company has unconsolidated equity investments in Europe and Asia and previously had two wholly-owned properties in Canada until their dispositions in March 2017. The Company also has borrowings outstanding in euros and British pounds sterling under the multicurrency portion of its revolving credit facility. Refer to Note 4 for more information on the Company’s foreign unconsolidated equity investments.

Other Assets

The Company includes prepaid expenses, capitalized software costs, contract intangible assets, deferred costs, loan investments, goodwill, derivative assets, and Retained CDO Bonds in other assets.

Loan Investments

The Company may originate loans related to specific real estate development projects. In October 2017, the Company entered into an agreement to provide a mezzanine construction loan facility with a maximum commitment of $250,000 to an industrial developer as borrower. As of March 31, 2018 and December 31, 2017, the carrying value of the Company’s loan investments was $22,437 and $22,154, respectively, which represents the cost, net of accumulated amortization of loan costs. As of March 31, 2018, the loan investments had a weighted average interest rate of 10.47%. The Company evaluates its loan investments for possible credit losses each period. There were no loan reserves recorded during the three months ended March 31, 2018 and all of the Company’s loan investments were performing in accordance with the terms of the relevant investments as of March 31, 2018.

Goodwill

The Company recognized goodwill of $3,802 related to the acquisition of Gramercy Europe Limited, which it adjusts each reporting period for the effect of foreign currency translation adjustments and tests for impairment on an annual basis, or more frequently if events or changes in circumstances indicate that the asset might be impaired. The carrying value of goodwill at March 31, 2018 and December 31, 2017 was $3,394 and $3,272, respectively. The Company did not record any impairment on its goodwill during the three months ended March 31, 2018.

Retained CDO Bonds

The Retained CDO Bonds are non-investment grade subordinate bonds, preferred shares and ordinary shares of two CDOs. Management estimated the timing and amount of cash flows expected to be collected and recognized an investment in the Retained CDO Bonds equal to the net present value of these discounted cash flows. There is no guarantee that the Company will realize any proceeds from this investment, or what the timing will be for the expected remaining life of the Retained CDO Bonds. The Company considers these investments to be not of high credit quality and does not expect a full recovery of interest and principal. Therefore, the Company has suspended interest income accruals on these investments. The Company classifies the Retained CDO Bonds as available for sale. On a quarterly basis, the Company evaluates the Retained CDO Bonds to determine whether significant changes in estimated cash flows or unrealized losses on these investments, if any, reflect a decline in value which is other-than-temporary. If there is a decrease in estimated cash flows and the investment is in an unrealized loss position, the Company will record an other-than-temporary impairment, or OTTI, in the Consolidated Statements of Operations. To determine the component of the OTTI related to expected credit losses, the Company compares the amortized cost basis of the Retained CDO Bonds to the present value of the revised expected cash flows, discounted using the pre-impairment effective yield. Conversely, if the security is in an unrealized gain position and there is a decrease or significant increase in expected cash flows, the Company will prospectively adjust the yield using the effective yield method. Refer to Note 7 for further discussion regarding the fair value measurement of the Retained CDO Bonds. For the three months ended March 31, 2018 and 2017, the Company recognized OTTI on its Retained CDO Bonds of $0 and $4,890, respectively.

A summary of the Company’s Retained CDO Bonds as of March 31, 2018 is as follows:

Number of Securities	Face Value		Amortized Cost		Gross Unrealized Gain		Other-Than-Temporary Impairment		Fair Value		Weighted Average Expected Life (years)
6	$	329,597	$	5,431	$	369	$	—	$	5,800	1.1

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash investments, debt investments and accounts receivable. The Company places its cash investments in excess of insured amounts with high quality financial institutions.

Concentrations of credit risk also arise when a number of the Company’s tenants or asset management clients are engaged in similar business activities or are subject to similar economic risks or conditions that could cause their inability to meet contractual obligations to the Company. The Company regularly monitors its portfolio to assess potential concentrations of credit risk. Management believes the current credit risk portfolio is reasonably well diversified. During the three months ended March 31, 2018 and 2017, there were no tenants that accounted for 10.0% or more of the Company's rental revenue. Additionally, for the three months ended March 31, 2018, there were three states, Illinois, Texas, and Florida, that each accounted for 10.0% or more of the Company’s rental revenue.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Recently Issued Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09 (Topic 606), Revenue from Contracts with Customers, which is a comprehensive new revenue recognition model requiring a company to recognize revenue to depict the transfer of goods or services to customers in an amount reflecting the consideration it expects to receive in exchange for those goods or services. In April 2016 and February 2017, the FASB issued ASU 2016-10 and ASU 2017-05, respectively, which further clarified the new revenue recognition guidance under ASC Topic 606. The Company adopted the guidance on January 1, 2018 using the modified retrospective method, which did not have a material impact on its Consolidated Financial Statements. Refer to the “Revenue” section above for further detail.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The guidance requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and to record changes in instruments specific credit risk for financial liabilities measured under the fair value option in other comprehensive income. The update is effective for fiscal years beginning after December 15, 2017, and for interim periods therein. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements. Refer to Note 8 for more information.

In February 2016, the FASB issued ASU 2016-02, Leases, which amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The update will be effective beginning in the first quarter of 2019 and early adoption is permitted. The new standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company’s accounting for leases in which it is a lessor, which represents most of its leasing arrangements, will be largely unchanged under ASU 2016-02; however, the Company is a lessee in several operating and ground leases and the accounting for these arrangements is more significantly impacted by the new standard. Pursuant to the new guidance, lessees are required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. The Company is continuing to evaluate the impact of adopting the new leases standard on its Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows Classification of Certain Cash Receipts and Cash Payments, which serves to reduce the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The update is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, with early adoption permitted. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements.

In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation: Scope of Modification Accounting. The amendment provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. The guidance is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted under certain circumstances. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities. The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The transition guidance provides companies with the option of early adopting the new standard using a modified retrospective transition method in any interim period after issuance of the update, or alternatively requires adoption for fiscal years beginning after December 15, 2018. In the first quarter of 2018, the Company early adopted this standard and the adoption did not have a material impact on its Consolidated Financial Statements.

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Unconsolidated Equity Investments

3 Months Ended

Mar. 31, 2018

Investments in and Advances to Affiliates, Schedule of Investments [Abstract]

Unconsolidated Equity Investments

Unconsolidated Equity Investments

The Company has investments in a variety of ventures. The Company will co-invest in entities that own multiple properties with various investors or with one partner. The Company may manage the ventures and earn fees, such as asset and property management fees, incentive fees, and promoted interest for its services, or one of the other partners will manage the ventures for similar such fees. Depending on the structure of the venture, the Company’s voting interest may be different than its economic interest.

The Company accounts for substantially all of its unconsolidated equity investments under the equity method of accounting because it exercises significant influence, but does not unilaterally control the entities, and is not considered to be the primary beneficiary. In unconsolidated equity investments, the rights of the other investors are protective and participating. Unless the Company is determined to be the primary beneficiary, these rights preclude it from consolidating the investments. The investments are recorded initially at cost as unconsolidated equity investments, as applicable, and subsequently are adjusted for equity interest in net income and contributions and distributions. The amount of the investments on the Consolidated Balance Sheets is evaluated for impairment at each reporting period. None of the unconsolidated equity investment debt is recourse to the Company. Transactions with unconsolidated equity method entities are eliminated to the extent of the Company’s ownership in each such entity. Accordingly, the Company’s share of net income of these equity method entities is included in consolidated net income.

As of March 31, 2018 and December 31, 2017, the Company owned properties through unconsolidated equity investments and had investment interests in these unconsolidated entities as follows:

	As of March 31, 2018								As of December 31, 2017
Investment	Ownership %		Voting Interest %		Partner	Investment in Unconsolidated Equity Investment 1		No. of Properties	Investment in Unconsolidated Equity Investment 1		No. of Properties
Strategic Office Partners	25.0	%	25.0	%	TPG Real Estate	$	28,792	13	$	28,243	13
E-Commerce JV	51.0	%	50.0	%	Ample Glow Investments	43,502		2	17,798		—
Goodman UK JV	80.0	%	50.0	%	Goodman Group	15,980		1	15,768		1
Gramercy European Property Fund III	19.9	%	50.0	%	Various	5,363		2	2,949		—
Other2	5.1% - 50.0%		5.1% - 50.0%		Various	5,476		3	5,456		3
Total						$	99,113	21	$	70,214	17

1. The amounts presented include a basis difference of $2,011 and $1,943, net of accumulated amortization, for the Goodman UK JV as of March 31, 2018 and December 31, 2017, respectively. The amounts presented include a basis difference of $(3,916), net of accumulated amortization, for the E-Commerce JV as of March 31, 2018.

2. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

The following is a summary of the Company’s unconsolidated equity investments for the three months endedMarch 31, 2018:

	Unconsolidated Equity Investments
Balance at January 1, 2018	$	70,214
Contributions to unconsolidated equity investments	28,731
Equity in net loss of unconsolidated equity investments, including adjustments for basis differences	(926		)
Other comprehensive income of unconsolidated equity investments	431
Cumulative effect of accounting change	663
Balance at March 31, 2018	$	99,113

Strategic Office Partners

In August 2016, the Company partnered with TPG Real Estate, or TPG, to form Strategic Office Partners, an unconsolidated equity investment created for the purpose of acquiring, owning, operating, leasing and selling single-tenant office properties located in high-growth metropolitan areas in the United States. The Company provides asset and property management, accounting, construction, and leasing services to Strategic Office Partners, for which it earns management fees and is entitled to a promoted interest. TPG and the Company have committed an aggregate $400,000 to Strategic Office Partners, including $100,000 from the Company. During the three months ended March 31, 2018, the Company did not make any contributions to or receive any distributions from Strategic Office Partners.

E-Commerce JV

In November 2017, the Company formed a joint venture with an investment partner, which will acquire, own and manage Class A distribution centers leased to leading e-commerce tenants on long-term leases across the United States, or the E-Commerce JV. The Company has joint control over the E-Commerce JV, which is shared equally with its investment partner. The Company provides asset and property management and accounting services to the E-Commerce JV, for which it earns management fees. The Company has committed capital to fund its initial acquisition of six properties, as well as the acquisition of additional properties in the future, subject to the partners' approval. The Company's pro rata funding commitment for the initial six properties is estimated at approximately $110,000, of which approximately $80,000 will be funded in OP Units issued to the seller of the property and approximately $30,000 will be funded in cash. During the three months ended March 31, 2018, the E-Commerce JV acquired two properties. During the three months ended March 31, 2018, the Company contributed $1,130in cash and OP Units valued at approximately $25,141 to the E-Commerce JV.

Goodman UK JV

The Goodman UK JV invests in industrial properties in the United Kingdom. During the three months ended March 31, 2018 and 2017, the Company received no distributions from the Goodman UK JV.

European Investment Funds

Gramercy European Property Fund III

In October 2017, the Company formed a new European investment fund with several other equity investment partners, or the Gramercy European Property Fund III, which has total initial capital commitments of $323,359 (€262,622) from all investors, of which the Company’s initial capital commitment is $64,257 (€52,187), representing an interest of approximately 19.9%. The Company provides asset and property management and accounting services to the Gramercy European Property Fund III, for which it is entitled to management fees and a promoted interest. During the three months ended March 31, 2018, the Gramercy European Property Fund III acquired two properties. During the three months ended March 31, 2018, the Company contributed $2,460 (€1,977) to the Gramercy European Property Fund III.

Gramercy European Property Fund

In July 2017, the Gramercy European Property Fund sold 100.0% of its assets to a third party, and, concurrently, the Company sold its 5.1% direct interest in the Goodman Europe JV to the same entity that acquired the Gramercy European Property Fund's assets. In connection with the sale transactions, the Company's management contract arrangement with the Gramercy European Property Fund was terminated; however, the Company continues to manage the assets for the new owner through June 2018.

The following are the balance sheets for the Company’s unconsolidated equity investments at March 31, 2018:

	Strategic Office Partners		E-Commerce JV		Goodman UK JV		Gramercy European Property Fund III		Other1
Assets:
Real estate assets, net2	$	264,099	$	149,895	$	19,150	$	62,284	$	108,993
Other assets	80,897		48,894		1,751		5,428		18,421
Total assets	$	344,996	$	198,789	$	20,901	$	67,712	$	127,414
Liabilities and members' equity:
Mortgage notes payable	$	213,699	$	108,473	$	—	$	35,873	$	38,341
Other liabilities	16,698		5,018		732		4,850		19,043
Total liabilities	230,397		113,491		732		40,723		57,384
Company's equity	28,792		43,502		15,980		5,363		5,476
Other members' equity	85,807		41,796		4,189		21,626		64,554
Liabilities and members' equity	$	344,996	$	198,789	$	20,901	$	67,712	$	127,414

1. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

2. Includes basis adjustments recorded by the Company to adjust the unconsolidated equity investments to fair value.

The following are the balance sheets for the Company’s unconsolidated equity investments at December 31, 2017:

	Strategic Office Partners		E-Commerce JV		Goodman UK JV		Other1
Assets:
Real estate assets, net2	$	265,014	$	—	$	18,633	$	107,949
Other assets	78,243		35,727		1,473		34,022
Total assets	$	343,257	$	35,727	$	20,106	$	141,971
Liabilities and members' equity:
Mortgage notes payable	$	213,205	$	—	$	—	$	38,662
Other liabilities	15,002		830		203		19,329
Total liabilities	228,207		830		203		57,991
Company's equity	28,243		17,798		15,768		8,405
Other members' equity	86,807		17,099		4,135		75,575
Liabilities and members' equity	$	343,257	$	35,727	$	20,106	$	141,971

1. Includes CBRE Strategic Partners Asia, the Philips JV, the Morristown JV, and the Gramercy European Property Fund III.

2. Includes basis adjustments recorded by the Company to adjust the unconsolidated equity investments to fair value.

Certain real estate assets in the Company’s unconsolidated equity investments are subject to mortgage notes. The following is a summary of the secured financing arrangements within the Company’s unconsolidated equity investments as of March 31, 2018:

					Outstanding Balance2
Property	Unconsolidated Equity Investment	Economic Ownership	Interest Rate1	Maturity Date	March 31, 2018			December 31, 2017
Strategic Office Partners Facility 13	Strategic Office Partners	25.0%	4.70%	10/7/2019	$	169,380		$	169,380
Strategic Office Partners Facility 24	Strategic Office Partners	25.0%	9.21%	10/8/2020	39,540			39,540
E-Commerce JV Facility4	E-Commerce JV	51.0%	3.38%	2/10/2023	109,846			—
Gramercy European Property Fund III Facility4	Gramercy European Property Fund III	19.9%	1.57%	3/12/2023	36,084			—
Henderson, NV	Strategic Office Partners	25.0%	4.75%	8/6/2025	8,593			8,636
Somerset, NJ	Philips JV	25.0%	6.90%	9/11/2035	38,341			38,662
Total mortgage notes payable					$	401,784		$	256,218
Net deferred financing costs and net debt discount					(5,398		)	(4,351		)
Total mortgage notes payable, net					$	396,386		$	251,867

1. Represents the current effective rate as of March 31, 2018, including the swapped interest rate for mortgage notes that have interest rate swaps. The current interest rate is not adjusted to include the amortization of fair market value premiums or discounts.

2. Mortgage notes are presented at 100.0% of the amount held by the unconsolidated equity investment.

3. As of March 31, 2018, there were ten properties under this mortgage note.

4. As of March 31, 2018, there were two properties under each of these mortgage notes.

The following are the statements of operations for the Company’s unconsolidated equity investments for the three months ended March 31, 2018:

	Strategic Office Partners			E-Commerce JV			Goodman UK JV			Gramercy European Property Fund III			Other1
Revenues	$	11,143		$	2,165		$	—		$	482		$	1,994
Operating expenses	4,151			583			260			682			106
Interest expense	3,113			669			—			97			666
Depreciation and amortization	4,823			862			206			209			333
Total expenses	12,087			2,114			466			988			1,105
Net income (loss) from operations	(944		)	51			(466		)	(506		)	889
Gain on derivatives	492			—			—			—			—
Loss on extinguishment of debt	—			(1,200		)	—						—
Net income (loss)	$	(452	)	$	(1,149	)	$	(466	)	$	(506	)	$	889
Company's share in net income (loss)	$	26		$	(520	)	$	(373	)	$	(93	)	$	20
Adjustments for REIT basis	—			18			(4		)	—			—
Company's equity in net income (loss) within continuing operations	$	26		$	(502	)	$	(377	)	$	(93	)	$	20

1. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

The following are the statements of operations for the Company’s unconsolidated equity investments for the three months ended March 31, 2017:

	Gramercy European Property Fund 1
	Goodman Europe JV			Gramercy European Property Fund2		Total			Strategic Office Partners			Goodman UK JV			Other 3
Revenues	$	4,955		$	10,118	$	15,073		$	5,526		$	295		$	(1,331	)
Operating expenses	922			2,951		3,873			1,474			302			576
Interest expense	672			1,474		2,146			1,510			—			641
Depreciation and amortization	2,021			4,473		6,494			2,503			375			333
Total expenses	3,615			8,898		12,513			5,487			677			1,550
Net income (loss) from operations	1,340			1,220		2,560			39			(382		)	(2,881		)
Gain (loss) on derivatives	—			1,221		1,221			(349		)	—			—
Provision for taxes	(17		)	146		129			—			(8		)	—
Net income (loss)	$	1,323		$	2,587	$	3,910		$	(310	)	$	(390	)	$	(2,881	)
Company’s share in net income (loss)	$	67		$	446	$	513		$	(15	)	$	(312	)	$	(155	)
Adjustments for REIT basis	(36		)	—		(36		)	—			(89		)	—
Company’s equity in net income (loss) within continuing operations	$	31		$	446	$	477		$	(15	)	$	(401	)	$	(155	)

1. As of and for the three months ended March 31, 2017, the Company had a 5.1% direct interest in the Goodman Europe JV as well as an indirect interest in the remaining 94.9% interest that was held through the Company’s 14.2% interest in the Gramercy European Property Fund. For the three months ended March 31, 2017, the Company’s equity in net income (loss) from the entities is based on these ownership interest percentages during the period.

2. Excludes the results of the Gramercy European Property Fund’s 94.9% interest in the Goodman Europe JV, as the Goodman Europe JV is separately presented.

3. Includes CBRE Strategic Partners Asia, the Philips JV, the Morristown JV, and European Fund Carry Co.

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Debt Obligations

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Debt Obligations

Debt Obligations

Secured Debt

Mortgage Notes

Certain real estate assets are subject to mortgage notes. During the three months endedMarch 31, 2018, the Company did not assume or pay off any mortgages notes. During the year ended December 31, 2017, the Company assumed $181,107 of non-recourse mortgages in connection with seven real estate acquisitions. During the three months ended March 31, 2017, the Company refinanced the debt on two properties encumbered by a mortgage note, subsequently transferred the mortgage on these two properties to the buyer of the properties, and, as a result, recorded a net loss on the early extinguishment of debt of $208. The Company’s mortgage notes include a series of financial and other covenants with which the Company must comply in order to borrow under them. The Company was in compliance with the covenants under the mortgage note facilities as of March 31, 2018.

The following is a summary of the Company’s secured financing arrangements as of March 31, 2018 and December 31, 2017:

Property	Interest Rate 1	Maturity Date	Outstanding Balance
			March 31, 2018		December 31, 2017
Greenwood, IN	3.59%	6/15/2018	$	7,211	$	7,257
Greenfield, IN	3.63%	6/15/2018	5,828		5,865
Logistics Portfolio - Pool 32	3.96%	8/1/2018	43,302		43,302
Philadelphia, PA	4.99%	1/1/2019	11,842		11,943
Bridgeview, IL	3.90%	5/1/2019	5,792		5,838
Spartanburg, SC	3.20%	6/1/2019	530		632
Charleston, SC	3.11%	8/1/2019	320		457
Lawrence, IN	5.02%	1/1/2020	19,896		20,061
Charlotte, NC	3.28%	1/1/2020	1,363		1,538
Hawthorne, CA	3.52%	8/1/2020	17,042		17,207
Charleston, SC	3.32%	10/1/2020	696		758
Charleston, SC	2.97%	10/1/2020	684		746
Charleston, SC	3.37%	10/1/2020	684		746
Charlotte, NC	3.38%	10/1/2020	594		647
Des Plaines, IL	5.54%	10/31/2020	2,365		2,385
Waco, TX	4.75%	12/19/2020	14,815		14,890
Deerfield, IL	3.71%	1/1/2021	10,355		10,447
Winston-Salem, NC	3.41%	6/1/2021	3,135		3,354
Winston-Salem, NC	3.42%	7/1/2021	1,043		1,114
Logistics Portfolio - Pool 12	4.27%	1/1/2022	37,856		38,107
CCC Portfolio2	4.24%	10/6/2022	22,691		22,814
Logistics Portfolio - Pool 42	4.36%	12/5/2022	79,500		79,500
Romeoville, IL	3.80%	4/6/2023	24,835		24,951
Romeoville, IL3	9.37%	4/6/2023	6,613		6,623
KIK USA Portfolio2	4.31%	7/6/2023	7,077		7,154
Yuma, AZ	5.27%	12/6/2023	11,804		11,858
Allentown, PA	5.16%	1/6/2024	22,586		22,690
Spartanburg, SC	3.72%	2/1/2024	5,447		5,635
Natick, MA	5.21%	3/1/2024	31,121		31,224
Natick, MA3	10.38%	3/1/2024	3,458		3,469
Maple Grove, MN	3.88%	5/6/2024	16,291		16,380
Curtis Bay, MD	4.31%	7/1/2024	13,500		13,500
Rialto, CA	3.91%	8/1/2024	54,543		54,741
Houston, TX	3.68%	9/1/2024	26,000		26,000
Durham, NC	4.02%	9/6/2024	3,614		3,631
Charleston, SC	3.80%	2/1/2025	5,831		6,001
Hackettstown, NJ	5.49%	3/6/2026	9,420		9,455
Hutchins, TX	5.41%	6/1/2029	21,269		21,578
Total mortgage notes payable			$	550,953	$	554,498
Net deferred financing costs and net debt premium			8,520		9,023
Total mortgage notes payable, net			$	559,473	$	563,521

1. Represents the interest rate as of March 31, 2018 that was recorded for financial reporting purposes, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

2. As of March 31, 2018, there were two properties under the Logistics Portfolio - Pool 3 mortgage, three properties under the Logistics Portfolio - Pool 1 mortgage, five properties under the CCC Portfolio mortgage, six properties under the Logistics Portfolio - Pool 4 mortgage, and three properties under the KIK USA Portfolio mortgage.

3. Mortgage notes represent mezzanine financing at the properties.

Unsecured Debt

2015 Credit Facility and Term Loans

In December 2015, the Company entered into an agreement, or the Credit Agreement, for a new $1,900,000 credit facility, or the 2015 Credit Facility, consisting of an $850,000 senior unsecured revolving credit facility, or the 2015 Revolving Credit Facility, and $1,050,000 term loan facility with JPMorgan Securities LLC and Merrill Lynch, Pierce, Fenner and Smith Incorporated. The 2015 Revolving Credit Facility consists of a $750,000 U.S. dollar revolving credit facility and a $100,000 multicurrency revolving credit facility. The 2015 Revolving Credit Facility matures in January 2020, but may be extended for two additional six-month periods upon the payment of applicable fees and satisfaction of certain customary conditions. The term loan facility, or the 2015 Term Loan, consists of a $300,000 term loan facility that matures in January 2019 with one 12-month extension option, or the 3-Year Term Loan, and a $750,000 term loan facility that matures in January 2021, or the 5-Year Term Loan. In December 2015, the Company also entered into a new $175,0007-year unsecured term loan with Capital One, N.A, or the 7-Year Term Loan, which matures in January 2023. In October 2017, the Company modified the 7-Year Term Loan by increasing the loan amount to $400,000 and reducing the interest rate to the terms described below.

Outstanding borrowings under the 2015 Revolving Credit Facility incur interest at a floating rate based upon, at the Company's option, either (i) adjusted LIBOR plus an applicable margin ranging from 0.88% to 1.55%, depending on the Company's credit ratings, or (ii) the alternate base rate plus an applicable margin ranging from 0.00% to 0.55%, depending on the Company's credit ratings. The Company is also required to pay quarterly in arrears a 0.13% to 0.30% facility fee, depending on its credit ratings, on the total commitments under the 2015 Revolving Credit Facility. Outstanding borrowings under the 2015 Term Loan and the 7-Year Term Loan incur interest at a floating rate based upon, at the Company's option, either (i) adjusted LIBOR plus an applicable margin ranging from 0.90% to 1.75%, depending on the Company's credit ratings, or (ii) the alternate base rate plus an applicable margin ranging from 0.00% to 0.75%, depending on the Company's credit ratings. The alternate base rate for the 2015 Revolving Credit Facility and the 7-Year Term Loan is the greater of (x) the prime rate announced by JPMorgan Chase Bank, N.A. or Capital One, respectively, (y) 0.50% above the Federal Funds Effective Rate, and (z) the adjusted LIBOR for a one-month interest period plus 1.00%.

The Company’s unsecured borrowing facilities include a series of financial and other covenants with which the Company must comply in order to borrow under the facilities. The Company was in compliance with the covenants under the facilities as of March 31, 2018. Refer to the table at the end of this Note 5 for specific terms and the Company’s outstanding borrowings under the facilities.

Senior Unsecured Notes

During 2015 and 2016, the Company issued and sold an aggregate $500,000 principal amount of senior unsecured notes payable in private placements, which have maturities ranging from 2022 through 2026 and bear interest semiannually at rates ranging from 3.89% to 4.97%. Refer to the table later in Note 5 for specific terms of the Company's Senior Unsecured Notes.

Exchangeable Senior Notes

In September 2017, the Company's $115,000 of 3.75% Exchangeable Senior Notes were exchanged for 5,258,420 of the Company's common shares.

The terms of the Company’s unsecured debt obligations and outstanding balances as of March 31, 2018 and December 31, 2017 are set forth in the table below:

	Stated Interest Rate		Effective Interest Rate 1		Maturity Date	Outstanding Balance
						March 31, 2018			December 31, 2017
2015 Revolving Credit Facility - USD tranche	2.89	%	2.89	%	1/8/2020	$	275,000		$	345,000
2015 Revolving Credit Facility - Multicurrency tranche	1.32	%	1.32	%	1/8/2020	17,543			12,162
3-Year Term Loan	2.91	%	2.33	%	1/8/2019	300,000			300,000
5-Year Term Loan	2.91	%	2.70	%	1/8/2021	750,000			750,000
7-Year Term Loan	2.76	%	3.00	%	1/9/2023	400,000			400,000
2015 Senior Unsecured Notes	4.97	%	5.07	%	12/17/2024	150,000			150,000
2016 Senior Unsecured Notes	3.89	%	4.00	%	12/15/2022	150,000			150,000
2016 Senior Unsecured Notes	4.26	%	4.38	%	12/15/2025	100,000			100,000
2016 Senior Unsecured Notes	4.32	%	4.43	%	12/15/2026	100,000			100,000
Total unsecured debt						2,242,543			2,307,162
Net deferred financing costs and net debt discount						(4,872		)	(5,063		)
Total unsecured debt, net						$	2,237,671		$	2,302,099

1. Represents the rate at which interest expense is recorded for financial reporting purposes as of March 31, 2018, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

Combined aggregate principal maturities of the Company’s unsecured debt obligations and non-recourse mortgages, in addition to associated interest payments, as of March 31, 2018 are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Above market interest		Total
2015 Revolving Credit Facility	$	—	$	—	$	292,543	$	—	$	—	$	—	$	—	$	292,543
Term Loans	—		300,000		—		750,000		—		400,000		—		1,450,000
Mortgage Notes Payable 1	66,599		30,450		62,834		19,256		141,929		229,885		—		550,953
Senior Unsecured Notes	—		—		—		—		150,000		350,000		—		500,000
Interest Payments 2	82,144		97,025		87,135		57,199		53,364		64,772		3,648		445,287
Total	$	148,743	$	427,475	$	442,512	$	826,455	$	345,293	$	1,044,657	$	3,648	$	3,238,783

1. Mortgage note payments reflect accelerated repayment dates, when applicable, pursuant to the related agreement.

2. Interest payments do not reflect the effect of interest rate swaps.

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Transactions with Trustee Related Entities and Related Parties

3 Months Ended

Mar. 31, 2018

Related Party Transactions [Abstract]

Transactions with Trustee Related Entities and Related Parties

Transactions with Trustee Related Entities and Related Parties

The Company’s CEO, Gordon F. DuGan, was on the board of directors of the Gramercy European Property Fund prior to its sale in July 2017 and committed and fully funded approximately $1,388 (€1,250) in capital to the Gramercy European Property Fund. The two Managing Directors of Gramercy Europe Limited collectively committed and fully funded approximately $1,388 (€1,250) in capital to the Gramercy European Property Fund prior to the sale of its assets in July 2017.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

ASC 820-10, “Fair Value Measurements and Disclosures,” provides guidance on the fair value measurement of a financial asset or liability. Inputs used to develop fair value measurements are classified into one of three categories: Level I, defined as observable inputs such as quoted prices in active markets for identical assets or liabilities; Level II, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level III, defined as unobservable inputs for which there is little or no market or pricing data, thus requiring management to use its judgment and develop its own assumptions.

The following table presents the carrying value in the financial statements and approximate fair value of assets and liabilities measured on a recurring and non-recurring basis at March 31, 2018 and December 31, 2017:

	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
Interest rate swaps	$	41,888	$	41,888	$	19,668	$	19,668
Retained CDO Bonds	5,800		5,800		5,527		5,527
Real estate investments1	—		—		87,996		87,996
Investment in CBRE Strategic Partners Asia	2,869		2,869		2,820		2,820
Loan investments2	22,437		20,990		22,154		21,362
Financial liabilities:
Interest rate swaps	$	13	$	13	$	173	$	173
Long-term debt:
2015 Revolving Credit Facility2	292,543		292,492		357,162		357,369
3-Year Term Loan2	300,000		300,090		300,000		300,091
5-Year Term Loan2	750,000		750,653		750,000		750,678
7-Year Term Loan2	398,241		400,020		398,152		400,010
Mortgage notes payable2	559,473		565,329		563,521		573,826
Senior Unsecured Notes2	496,887		502,349		496,785		513,229

1. Amount represents seven real estate investments that were impaired by the Company and held as of December 31, 2017.

2. Long-term debt instruments are classified as Level III due to the significance of unobservable inputs which are based upon management assumptions.

The following methods and assumptions were used to estimate the fair value of each class of assets and liabilities for which it is practicable to estimate the value:

Cash and cash equivalents, marketable securities, accrued interest, and accounts payable:These balances in the Consolidated Financial Statements reasonably approximate their fair values due to the items’ short maturities.

Loan investments: Loan investments are presented in other assets on the Consolidated Financial Statements at amortized cost and not fair value. The fair value of each investment is estimated by a discounted cash flow model, using discount rates that best reflect current market rates for financings with similar characteristics and credit quality.

Mortgage notes payable, unsecured term loans, unsecured revolving credit facilities and senior unsecured notes: These instruments are presented in the Consolidated Financial Statements at amortized cost and not at fair value. The fair value of each instrument is estimated by a discounted cash flows model, using discount rates that best reflect current market rates for financings with similar characteristics and credit quality.

Retained CDO Bonds, investment in CBRE Strategic Partners Asia, real estate investments, and interest rate swaps: Refer to section below, “Valuation of Level III Instruments,” for valuation methods and assumptions used for these Level III assets and liabilities measured at fair value in the Consolidated Financial Statements.

The following discussion of fair value was determined by the Company using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, fair values are not necessarily indicative of the amounts the Company could realize on disposition of the assets or liabilities. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

Assets and liabilities measured at fair value on a recurring and non-recurring basis are categorized as follows:

At March 31, 2018	Total			Level I		Level II		Level III
Financial Assets:
Retained CDO Bonds	$	5,800		$	—	$	—	$	5,800
Investment in CBRE Strategic Partners Asia	2,869			—		—		2,869
Interest rate swaps	41,888			—		—		41,888
	$	50,557		$	—	$	—	$	50,557
Financial Liabilities:
Interest rate swaps	$	(13	)	$	—	$	—	$	(13	)
	$	(13	)	$	—	$	—	$	(13	)

At December 31, 2017	Total			Level I		Level II		Level III
Financial Assets:
Retained CDO Bonds	$	5,527		$	—	$	—	$	5,527
Real estate investments	87,996			—		—		87,996
Investment in CBRE Strategic Partners Asia	2,820			—		—		2,820
Interest rate swaps	19,668			—		—		19,668
	$	116,011		$	—	$	—	$	116,011
Financial Liabilities:
Interest rate swaps	$	(173	)	$	—	$	—	$	(173	)
	$	(173	)	$	—	$	—	$	(173	)

Valuation of Level III Instruments

Retained CDO Bonds:Retained CDO Bonds are valued on a recurring basis using an internally developed discounted cash flow models, which require significant assumptions and judgment. The models are most sensitive to the unobservable inputs such as the amount of the recoveries of the underlying securities.

Investment in CBRE Strategic Partners Asia: The Company's investment in CBRE Strategic Partners Asia is based on the Level III valuation inputs applied by the investment manager of CBRE Strategic Partners Asia, utilizing a mix of different approaches for valuing the underlying real estate related investments within the investment company. The valuations are most sensitive to the unobservable inputs of discount rates, as well as capitalization rates an expected future cash flows.

Real estate investments: Real estate investments impaired during a period are reported at estimated fair value and real estate investments impaired during a period that are classified as held for sale as of the end of the period are reported at estimated fair value less costs to sell. The fair value of real estate investments and their related lease intangibles is determined using third-party valuation support, including purchase-sale contracts and other available market information. Key assumptions in the valuations, to which the fair value determinations are most sensitive, include discount and capitalization rates as well as expected future cash flows.

Interest rate swaps: The Company's derivative instruments as of March 31, 2018 and December 31, 2017 consist of interest rate swaps, which are valued with the assistance of a third-party derivative specialist using a discounted cash flow model, that requires a combination of observable market-based inputs, such as interest rate curves, and unobservable inputs which require significant judgment such as the credit valuation adjustments due to the risk of nonperformance by both the Company and its counterparties. The most significant unobservable input in the fair valuation of interest rate swaps is the credit valuation adjustment as it requires significant management judgment regarding changes in the credit risk of the Company or its counterparties, however the primary driver of the fair value of the interest rate swaps is the forward interest rate curve.

Fair Value on a Recurring Basis

Quantitative information regarding the valuation techniques and the range of significant unobservable Level III inputs used to determine fair value measurements on a recurring basis as of March 31, 2018 are as follows:

Financial Asset (Liability)	Fair Value		Valuation Technique	Unobservable Inputs	Range
Non-investment grade, subordinate CDO bonds	$	5,800	Discounted cash flows	Discount rate	19.0%
Investment in CBRE Strategic Partners Asia	2,869		Discounted cash flows	Discount rate	20.0%
Interest rate swaps1	41,875		Hypothetical derivative method	Credit borrowing spread	110 to 190 basis points

1. Fair value includes interest rate swap liabilities with an aggregate value of $(13).

The following rollforward table reconciles the beginning and ending balances of financial assets (liabilities) measured at fair value on a recurring basis using Level III inputs as of March 31, 2018:

	Retained CDO Bonds			Investment in CBRE Strategic Partners Asia		Interest Rate Swaps		Total Financial Assets (Liabilities) - Level III
Balance at January 1, 2018	$	5,527		$	2,820	$	19,495	$	27,842
Amortization of discounts or premiums	321			—		330		651
Adjustments to fair value:
Unrealized gain on derivatives	—			—		22,050		22,050
Unrealized loss in other comprehensive income from fair value adjustment	(48		)	—		—		(48		)
Total gain on fair value adjustments	—			49		—		49
Balance at March 31, 2018	$	5,800		$	2,869	$	41,875	$	50,544

Fair Value on a Non-Recurring Basis

The Company measures its real estate investments impaired during a period, including both assets classified as held for sale and assets held for investment, on a non-recurring basis, and records impairment on these assets as a result of a change in intent to hold the real estate investments. Real estate investments impaired during a period are reported at estimated fair value and real estate investments impaired during a period that are classified as held for sale as of the end of the period are reported at estimated fair value less costs to sell. There were noassets measured on a non-recurring basis as of March 31, 2018. There were sevenassets measured on a non-recurring basis as of December 31, 2017, which were all classified as held for investment and recorded at $87,996 as of December 31, 2017.

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Derivatives and Non-Derivative Hedging Instruments

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Non-Derivative Hedging Instruments

Derivatives and Non-Derivative Hedging Instruments

In the normal course of business, the Company is exposed to the effect of interest rate changes and foreign exchange rate changes. The Company limits these risks by following established risk management policies and procedures including the use of derivatives and net investment hedges. The Company uses a variety of derivative instruments to manage, or hedge, interest rate risk. The Company enters into hedging and derivative instruments that will be maximally effective in reducing the interest rate risk and foreign currency exchange rate risk exposure that they are designated to hedge. This effectiveness is essential for qualifying for hedge accounting. Instruments that meet these hedging criteria are formally designated as hedges at the inception of the derivative contract. The Company uses a variety of commonly used derivative products that are considered “plain vanilla” derivatives. These derivatives typically include interest rate swaps, forward starting swaps, caps, collars and floors. The Company expressly prohibits the use of unconventional derivative instruments and the use of derivative instruments for trading or speculative purposes. Further, the Company has a policy of only entering into contracts with major financial institutions based upon their credit ratings and other factors.

The Company recognizes all derivatives on the Consolidated Balance Sheets at fair value within other assets or other liabilities, depending on the balance at the end of the period. Derivatives that are not designated as hedges must be adjusted to fair value through income. If a derivative is designated and qualifies as a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will be recognized in other comprehensive income until the hedged item is recognized in earnings. Prior to the Company’s adoption of ASU 2017-12 on January 1, 2018, described in Note 2, the ineffective portion of the change in fair value of a derivative designated as a hedge was immediately recognized in earnings, however subsequent to adoption, the entire change in fair value is recognized in other comprehensive income until the hedged item is recognized in earnings. As a result of adoption, the Company recorded a decrease to its opening retained earnings balance and a corresponding increase to its opening accumulated other comprehensive income balance of $103 as of January 1, 2018, which represents the cumulative amount of hedge ineffectiveness recorded in the Consolidated Statements of Operations at the time of adoption. Derivative accounting may increase or decrease reported net income and shareholders’ equity prospectively, depending on future levels of the LIBOR swap spreads and other variables affecting the fair values of derivative instruments and hedged items, but will have no effect on cash flows, provided the contract is carried through to full term. Refer to Note 7 for additional information on the Company's derivative instruments, including the fair value measurement of these instruments.

Borrowings on the Company’s multicurrency tranche of the 2015 Revolving Credit Facility, which are designated as non-derivative net investment hedges, are recognized at par value based on the exchange rate in effect on the date of the draw. Subsequent changes in the exchange rates of the Company’s non-derivative net investment hedges are recognized as part of the cumulative foreign currency translation adjustment within other comprehensive income.

The Company’s derivatives and hedging instruments as of March 31, 2018 are as follows:

	Benchmark Rate	Notional Value	Strike Rate	Effective Date	Expiration Date	Fair Value
Interest Rate Swap - Waco	1 mo. USD-LIBOR-BBA	14,815 USD	4.55%	12/19/2013	12/19/2020	$	(13	)
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.22%	12/19/2016	12/17/2018	615
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.23%	12/19/2016	12/17/2018	612
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.24%	12/19/2016	12/17/2018	604
Interest Rate Swap - 5-Year Term Loan	1 mo. USD-LIBOR-BBA	750,000 USD	1.60%	12/17/2015	12/17/2020	17,010
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	175,000 USD	1.82%	12/17/2015	1/9/2023	5,660
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	60,000 USD	1.95%	10/13/2017	1/9/2023	1,599
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	40,000 USD	2.01%	10/13/2017	1/9/2023	953
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	39,500 USD	1.96%	10/13/2017	1/9/2023	1,016
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	1.96%	10/13/2017	1/9/2023	809
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	2.00%	10/13/2017	1/9/2023	765
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	22,500 USD	1.95%	10/13/2017	1/9/2023	593
Forward Starting Swap1	3 mo. USD-LIBOR-BBA	250,000 USD	2.23%	12/20/2017	12/20/2027	11,652
Net Investment Hedge in GBP-denominated investments	USD-GBP exchange rate	9,000 GBP	N/A	7/15/2016	N/A	—
Net Investment Hedge in EUR-denominated investments	USD-EUR exchange rate	4,000 EUR	N/A	3/8/2018	N/A	—
Total hedging instruments						$	41,875

1. The forward starting swap has a mandatory early termination date of June 20, 2018.

As of March 31, 2018, the Company’s derivative instruments consisted of interest rate swaps, which are cash flow hedges used to hedge exposure to variability in future interest payments on its debt facilities. The Company's interest rate swap derivative instruments were reported in other assets at fair value of $41,888 and in other liabilities at fair value of $(13) at March 31, 2018.

The table below details the location in the financial statements of the gain or loss recognized on the interest rate swaps designated as cash flow hedges for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Accumulated other comprehensive income:
Gain recognized in accumulated other comprehensive income1	$	22,153	$	—
Interest expense:
Gain reclassified from accumulated other comprehensive income into interest expense1	$	268	$	268
Gain recognized in interest expense (ineffective portion)2	—		46
Total recognized in interest expense on statements of operations	$	268	$	314

1. Periods prior to January 1, 2018, when the Company adopted ASU 2017-12, include only the effective portion and periods subsequent to January 1, 2018 include both the effective and ineffective portions as the two amounts are no longer separately measured and reported. The first quarter of 2018 includes $103 related to the adoption of ASU 2017-02.

2. Represents the ineffective portion and pertains only to periods prior to January 1, 2018, when the Company adopted ASU 2017-12.

During the next 12 months, the Company expects that $(7,947) will be reclassified from other comprehensive income as an increase in interest expense for the Company’s interest rate swaps as of March 31, 2018. Additionally, the Company will recognize $1,295 in interest expense on a straight-line basis over the remaining original term of terminated swaps through June 2019, representing amortization of the remaining accumulated other comprehensive income balance related to the swap, and of this amount $1,087 will be recognized in interest expense during the next 12 months.

The Company hedges exposure to changes in the exchange rates underlying its investments based in foreign currencies using non-derivative net investment hedges in conjunction with borrowings under the multicurrency tranche of its 2015 Revolving Credit Facility. In March 2018, the Company entered into a non-derivative net investment hedge on its euro-denominated investment in the Gramercy European Property Fund III and in prior periods, from September 2015 until disposal of the underlying investments in July 2017, the Company had a non-derivative net investment hedge on its investments in the Gramercy European Property Fund and the Goodman Europe JV, all of which had euros as their functional currencies. The Company’s non-derivative net investment hedge on its British pound sterling-denominated investments, which was entered into in July 2016, is used to hedge exposure to changes in the British pound sterling U.S. dollar exchange rate underlying its unconsolidated equity investment in the Goodman UK JV, which has British pounds sterling as its functional currency. The Company’s non-derivative net investment hedge values are reported at carrying value and are included in the balance of the senior unsecured revolving credit facility on the Consolidated Balance Sheets. During the three months ended March 31, 2018 and 2017, the Company recorded a net loss of $459 and $923, respectively, in other comprehensive income from the impact of exchange rates related to the non-derivative net investment hedges. When the non-derivative net investments being hedged are sold or substantially liquidated, the balance of the translation adjustment accumulated in other comprehensive income will be reclassified into earnings.

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Shareholders' Equity (Deficit) of the Company

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Shareholders' Equity (Deficit) of the Company

Shareholders’ Equity (Deficit) of the Company

As of March 31, 2018 and December 31, 2017, the Company's authorized capital shares consisted of 500,000,000 shares of beneficial interest, $0.01 par value per share, of which the Company is authorized to issue up to 490,000,000 common shares of beneficial interest, $0.01 par value per share, or common shares, and 10,000,000 preferred shares of beneficial interest, $0.01 par value per share, or preferred shares. As of March 31, 2018, 160,782,765 common shares and 3,500,000 preferred shares were issued and outstanding.

In February 2018, the Company’s board of trustees authorized and the Company declared a dividend of $0.375 per common share for the first quarter of 2018, which was paid on April 16, 2018 to holders of record as of March 30, 2018.

Employee Share Purchase Plan

In June 2017, the Company’s shareholders approved an Employee Share Purchase Plan, or ESPP, which enables the Company’s eligible employees to purchase the common shares through payroll deductions. The ESPP has a maximum of 250,000 common shares available for issuance and provides for eligible employees to purchase the common shares during defined offering periods at a purchase price determined at the discretion of the board of trustees, which has been initially established to be equal to 90.0% of the lower of either (i) the closing price of the Company’s common shares on the first day of the offering period and (ii) the closing price of the Company’s common shares on the last day of the offering period. As of March 31, 2018, there were no shares issued under the ESPP.

Dividend Reinvestment Plan

In June 2016, the Company adopted a dividend reinvestment plan, or DRIP, under which shareholders may use their dividends and optional cash payments to purchase additional common shares of the Company. In August 2016, the Company registered 3,333,333 common shares related to the DRIP. During the three months ended March 31, 2018, 1,811 shares were issued under the DRIP and as of March 31, 2018 there were 3,323,962 shares available for issuance under the DRIP.

At-The-Market Equity Offering Program

In July 2016, the Company’s board of trustees approved the establishment of an “at the market” equity issuance program, or ATM Program, pursuant to which the Company may offer and sell common shares with an aggregate gross sales price of up to $375,000. During the three months ended March 31, 2018, the Company did not sell any common shares through the ATM Program.

Preferred Shares

Holders of the Company's 7.125% Series A Preferred Shares, or Series A Preferred Shares, are entitled to receive annual dividends of $1.78125 per share on a quarterly basis and dividends are cumulative, subject to certain provisions. On or after August 15, 2019, the Company can, at its option, redeem the Series A Preferred Shares at par for cash. At March 31, 2018, the Company had 3,500,000 of its Series A Preferred Shares outstanding with a mandatory liquidation preference of $25.00 per share.

Equity Incentive Plans

In June 2016, the Company instituted its 2016 Equity Incentive Plan, which was approved by the Company’s board of trustees and shareholders. As of March 31, 2018, there were 2,634,080 shares available for grant under the 2016 Equity Incentive Plan. The Company accounts for share-based compensation awards using fair value recognition provisions and assumes an estimated forfeiture rate which impacts the amount of compensation cost recognized over the benefit period.

Through March 31, 2018, 1,129,130 restricted shares had been issued under the Company’s equity incentive plans, including the 2016 Equity Incentive Plan and the Company’s previous equity incentive plans, of which 67.2% have vested. As of March 31, 2018 and December 31, 2017, the Company had 316,183 and 347,676 weighted average restricted shares outstanding, respectively. Compensation expense of $541 and $817 was recorded for the three months ended March 31, 2018 and 2017, respectively, related to the Company’s equity incentive plans. Compensation expense of $4,757 will be recorded over the course of the next 26 months representing the remaining weighted average vesting period of equity awards issued under the equity incentive plans as of March 31, 2018.

Compensation expense of $1,138 and $1,056 was recorded for the three months ended March 31, 2018 and 2017, respectively, for the Company's Outperformance Plans. Compensation expense of $10,188 will be recorded over the course of the next 35 months, representing the remaining weighted average vesting period of the awards issued under the Outperformance Plans as of March 31, 2018.

Earnings per Share

The Company presents both basic and diluted earnings per share, or EPS. Basic EPS is computed by dividing net income available to common shareholders, as adjusted for unallocated earnings attributable to certain participating securities, if any, by the weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common shares were exercised or converted into common shares, as long as their inclusion would not be anti-dilutive. The two-class method is an earnings allocation methodology that determines EPS for common shares and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The Company has certain share-based payment awards that contain nonforfeitable rights to dividends, which are considered participating securities for the purposes of computing EPS pursuant to the two-class method, and therefore the Company applies the two-class method in its computation of EPS.

Earnings per share for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net income attributable to noncontrolling interest	(802		)	(154		)
Less: Nonforfeitable dividends allocated to participating shareholders	(203		)	(276		)
Less: Preferred share dividends	(1,559		)	(1,559		)
Net income available to common shares outstanding	$	25,300		$	7,292
Denominator – Weighted average shares:
Basic weighted average shares outstanding	160,408,136			140,907,399
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average shares outstanding	160,416,900			141,875,619

The Company’s options and other share-based payment awards used in the computation of EPS were calculated using the treasury share method. As discussed in Note 5, 100.0% of the Company’s Exchangeable Senior Notes were exchanged for 5,258,420 of the Company’s common shares in September 2017, however for the three months ended March 31, 2017, the Company had the intent and ability to settle the debt component of the Exchangeable Senior Notes in cash and the excess conversion premium in shares, thus for that period the Company only included the effect of the excess conversion premium in the calculation of Diluted EPS.

For the three months ended March 31, 2018 and 2017, the net income attributable to the outside interests in the Operating Partnership has been excluded from the numerator and 5,040,730 and 620,586, respectively, weighted average shares related to the outside interests in the Operating Partnership have been excluded from the denominator for the purpose of calculating Diluted EPS as there would have been no effect had such amounts been included. Refer to Note 11 for more information on the outside interests in the Operating Partnership.

Accumulated other comprehensive income (loss)

Accumulated other comprehensive income (loss) as of March 31, 2018 and December 31, 2017 is comprised of the following:

	March 31, 2018			December 31, 2017
Net unrealized gain on derivative securities	$	37,680		$	15,630
Net unrealized gain on debt instruments	369			417
Foreign currency translation adjustments:
Net gain on non-derivative net investment hedges1	(162		)	297
Other foreign currency translation adjustments	(4,757		)	(5,734		)
Reclassification of swap gain into interest expense	2,434			2,166
Cumulative effect of accounting change	103			—
Total accumulated other comprehensive income	$	35,667		$	12,776

1. The foreign currency translation adjustment associated with the Company’s non-derivative net investment hedge related to its European investments is included in other comprehensive income (loss). The balance reflects write-offs of $1,851 on the Company’s non-derivative net investment hedge during the year ended December 31, 2017.

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Partners' Capital of the Operating Partnership

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Partners' Capital of the Operating Partnership

Partners’ Capital of the Operating Partnership

The Company is the sole general partner of the Operating Partnership. As of March 31, 2018, the Company owned 160,782,765 of the outstanding general and limited partnership interests, or 96.75%, of the Operating Partnership. The number of common units in the Operating Partnership is equivalent to the number of outstanding common shares of the Company, and the entitlement of all the Operating Partnership’s common units to quarterly distributions and payments in liquidation are substantially the same as those of the Company's common shareholders. Similarly, in the case of each series of preferred units in the Operating Partnership held by the Company, there is a series of preferred shares that is equivalent in number and carries substantially the same terms as such series of the Operating Partnership’s preferred units.

Limited Partner Units

As of March 31, 2018, limited partners other than the Company owned 5,388,995 common units, or 3.25%, of the Operating Partnership.

Earnings per Unit

The Operating Partnership's earnings per unit for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net gain attributable to noncontrolling interest in other partnerships	—			(120		)
Less: Nonforfeitable dividends allocated to participating unitholders	(203		)	(276		)
Less: Preferred unit distributions	(1,559		)	(1,559		)
Net income available to common units outstanding	$	26,102		$	7,326
Denominator – Weighted average units:
Basic weighted average units outstanding	165,448,866			141,527,985
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average units outstanding	165,457,630			142,496,205

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Noncontrolling Interests

3 Months Ended

Mar. 31, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interests

Noncontrolling Interests

Noncontrolling interests represent the outside equity interests in the Operating Partnership as well as third-party equity interests in the Company’s other consolidated subsidiaries.

Outside equity interests in Operating Partnership

The outside equity interests in the Operating Partnership include common units of limited partnership interest in the Operating Partnership, or OP Units, and the earned and vested portion of limited partnership interests in the Operating Partnership granted by the Company pursuant to its share-based compensation plans, or LTIP Units, which are convertible on a one-for-one basis into OP Units. The aggregate outstanding noncontrolling interest in the Operating Partnership as of March 31, 2018 represented an interest of approximately 3.25% in the Operating Partnership. A portion of the Operating Partnership’s net income (loss) during each reporting period is attributed to noncontrolling interests based on the weighted average percentage ownership of both OP Unit holders and earned and vested LTIP Unit holders relative to the sum of the Company’s total outstanding common shares, OP Units, and earned and vested LTIP Units.

OP Units

During the three months ended March 31, 2018, the Company issued 996,098 OP Units as part of its contribution to fund its pro rata share of the E-Commerce JV’s acquisition of two properties. As of March 31, 2018, 4,729,480 OP Units were outstanding, which can be redeemed for 4,729,480 of the Company's shares. During the three months ended March 31, 2018 and the year ended December 31, 2017, 6,038 and 134,607 OP Units, respectively, were converted on a one-for-one basis into common shares of the Company. At March 31, 2018, 4,729,480 common shares of the Company were reserved for issuance upon redemption of OP Units. OP Units are recorded at the greater of cost basis or fair market value based on the closing share price of the Company’s common shares at the end of the reporting period. As of March 31, 2018, the value of the OP units was $137,800.

LTIP Units

As of March 31, 2018, noncontrolling interest owners held 659,515 earned and vested LTIP Units, which, upon conversion into OP Units, can be redeemed for 659,515 of the Company’s common shares. During the three months ended March 31, 2018 and year ended December 31, 2017, there were no earned and vested LTIP Units converted into OP Units or redeemed for common shares of the Company. At March 31, 2018, 659,515 common shares of the Company were reserved for issuance upon conversion of the earned and vested LTIP Units into OP Units and their subsequent redemption for common shares.

Below is the rollforward of the activity relating to the noncontrolling interests in the Operating Partnership as of March 31, 2018:

	Noncontrolling Interest
Balance at January 1, 2018	$	113,530
Issuance of noncontrolling interests in the Operating Partnership	25,142
Redemption of noncontrolling interests in the Operating Partnership	(130		)
Net income attribution	802
Fair value adjustments	232
Dividends	(1,776		)
Balance at March 31, 2018	$	137,800

Interests in Other Entities

There are entities that the Company consolidates into its Consolidated Financial Statements based on the structure of the entities and their control provisions. As of March 31, 2018, the Company consolidated the Lakemont Development Investment and during the year ended December 31, 2017 until its dissolution in the fourth quarter of 2017, the Company consolidated European Fund Manager, which were both consolidated VIEs of the Company. The Company’s interest in these entities is presented in the equity section of its Consolidated Financial Statements. Refer to Note 2 for further discussion of these entities and consolidation considerations.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Funding Commitments

As of March 31, 2018, the Company is obligated to fund the development of one property and remaining improvements at three development properties, for which it has remaining cumulative future commitments of $59,104.

The Company has committed $64,257 (€52,187) to the Gramercy European Property Fund III. The Company contributed $2,460 (€1,977) to the Gramercy European Property Fund III as of March 31, 2018. Foreign currency commitments have been converted into U.S. dollars based on (i) the foreign exchange rate at the closing date for completed transactions and (ii) the exchange rate that prevailed on March 31, 2018, in the case of unfunded commitments.

The Company has a 51.0% interest in the E-Commerce JV and has committed capital to fund its pro rata share of the E-Commerce JV’s initial acquisition of six properties, as well as the acquisition of additional properties in the future, subject to the partners' approval. The Company's pro rata funding commitment for the initial six properties is estimated at approximately $110,000, which will be funded using a combination of OP Units and cash. As of March 31, 2018, the Company contributed approximately $30,206 to the E-Commerce JV, of which $1,130 was contributed in cash.

The Company has committed to fund $100,000 to Strategic Office Partners, of which $29,477 was funded as of March 31, 2018 and December 31, 2017. See Note 4 for further information on the Gramercy European Property Fund III, the E-Commerce JV, and Strategic Office Partners.

Legal Proceedings

The Company and/or one or more of its subsidiaries is party to various litigation matters that are considered routine litigation incidental to its or their business, none of which are considered material.

Office Leases

The Company has several office locations, which are each subject to operating lease agreements. These office locations include the Company’s corporate office at 90 Park Avenue, New York, New York, and the Company’s various regional offices located across the United States and Europe.

Capital and Operating Ground Leases

Certain properties acquired are subject to ground leases, which are accounted for as operating and capital leases, as applicable. The ground leases have varying ending dates, renewal options and rental rate escalations, with the latest lease extending to June 2053. Future minimum rental payments to be made by the Company under these non-cancelable ground leases, excluding increases resulting from increases in the consumer price index, are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Total
Ground Leases - Operating	$	1,888	$	2,593	$	2,596	$	2,567	$	2,598	$	73,175	$	85,417
Ground Leases - Capital	1		—		—		—		—		329		330
Total	$	1,889	$	2,593	$	2,596	$	2,567	$	2,598	$	73,504	$	85,747

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company has elected to be taxed as a REIT, under Sections 856 through 860 of the Internal Revenue Code beginning with its taxable year ended December 31, 2004. To qualify as a REIT, the Company must meet certain organizational and operational requirements, including a requirement to distribute annually at least 90.0% of its ordinary taxable income to its shareholders. As a REIT, the Company generally will not be subject to U.S. federal income tax on taxable income that it distributes to its shareholders. The Operating Partnership is a limited partnership and therefore is generally not liable for federal corporate income taxes as income is reported in the tax returns of its partners. The Operating Partnership may, however, be subject to certain state and local taxes. The Operating Partnership has in the past established taxable REIT subsidiaries, or TRSs, to effect various taxable transactions. Typical transactions that could cause these TRSs to be subject to federal, state and local taxes would include, but are not limited to, gains on property sales and management fee income. Tax expense from the Operating Partnership’s TRS for the three months ended March 31, 2018 and 2017 was immaterial.

The Company’s policy for interest and penalties, if any, on material uncertain tax positions recognized in the financial statements is to classify these as interest expense and operating expense, respectively. As of March 31, 2018 and December 31, 2017, the Company did not incur any material interest or penalties.

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Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

The following table represents supplemental cash flow disclosures for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018			2017
Supplemental cash flow disclosures:
Interest paid	$	19,320		$	17,447
Income taxes paid	60			71
Proceeds from 1031 exchanges from sale of real estate	5			23,219
Use of funds from 1031 exchanges for acquisitions of real estate	(5		)	(23,218		)
Non-cash activity:
Fair value adjustment to noncontrolling interest in the Operating Partnership	$	232		$	(296	)
Debt assumed in acquisition of real estate	—			3,680
Debt transferred in disposition of real estate	—			(10,456		)
Non-cash acquisition of consolidated VIE	—			24,930
Dividend reinvestment plan proceeds	46			81
Redemption of units of noncontrolling interest in the Operating Partnership for common shares	(130		)	(2,164		)
Contributions to unconsolidated equity investments for units of noncontrolling interests in the operating partnership	25,141			—

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Subsequent Events

3 Months Ended

Mar. 31, 2018

Subsequent Events [Abstract]

Subsequent Events

Subsequent Events

In April 2018, the Company declared a second quarter 2018 common dividend of $0.375 per share, payable on July 16, 2018 to shareholders of record as of June 29, 2018. In April 2018, the Company also declared a second quarter 2018 dividend on its 7.125% Series A Preferred Shares in the amount of $0.44531 per share, payable on July 2, 2018 to preferred shareholders of record as of the close of business on June 19, 2018.

Subsequent to March 31, 2018, the Company closed on the disposition of a parcel of land for gross proceeds of approximately $975. Subsequent to March 31, 2018, the Company issued 570,863 OP Units valued at approximately $16,663 in connection with its contribution to the E-Commerce JV for the acquisition of two properties.

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Quarterly Presentation

The accompanying Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States, or GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In management’s opinion, all adjustments (consisting of normal recurring accruals) considered necessary for fair presentation have been included. The 2018 operating results for the period presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2018. These Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2017 of the Company and the Operating Partnership. The Consolidated Balance Sheets at December 31, 2017 were derived from the audited Consolidated Financial Statements at that date.

Reclassifications

Reclassifications

Certain prior year balances have been reclassified to conform with the current year presentation. During the fourth quarter of 2017, the Company adopted Accounting Standards Update, or ASU, No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash, which requires restricted cash and cash equivalents to be included with cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown on the Consolidated Statements of Cash Flows. As a result of the adoption, net cash provided by operating activities changed by $235, net cash used in investing activities changed by $(947), and net cash provided by financing activities changed by $909, for the three months endedMarch 31, 2017.

Principles of Consolidation

Principles of Consolidation

The Consolidated Financial Statements include the Company’s accounts and those of the Company’s subsidiaries which are wholly-owned or controlled by the Company, or entities which are variable interest entities, or VIEs, in which the Company is the primary beneficiary. The primary beneficiary is the party that absorbs a majority of the VIE’s anticipated losses and/or a majority of the expected returns. The Company has evaluated its investments for potential classification as variable interests by evaluating the sufficiency of each entity’s equity investment at risk to absorb losses.

Entities which the Company does not control and are considered VIEs, but where the Company is not the primary beneficiary, are accounted for under the equity method. All significant intercompany balances and transactions have been eliminated. The equity interests of other limited partners in the Company’s Operating Partnership are reflected as noncontrolling interests.

Real Estate Investments

Real Estate Investments

Real Estate Acquisitions

The Company evaluates its acquisitions of real estate, including equity interests in entities that predominantly hold real estate assets, to determine if the acquired assets meet the definition of a business and need to be accounted for as a business combination, or alternatively, should be accounted for as an asset acquisition. An integrated set of assets and activities acquired does not meet the definition of a business if either (i) substantially all the fair value of the gross assets acquired is concentrated in either a single identifiable asset or a group of similar identifiable assets, or (ii) the asset and activities acquired do not contain at least an input and a substantive process that together significantly contribute to the ability to create outputs. The Company expects that its acquisitions of real estate will continue to not meet the definition of a business.

Acquisitions of real estate that do not meet the definition of a business, including sale-leaseback transactions that have newly-originated leases and real estate investments under construction, or build-to-suit investments, are recorded as asset acquisitions. The accounting for asset acquisitions is similar to the accounting for business combinations, except that the acquisition consideration, including acquisition costs, is allocated to the individual assets acquired and liabilities assumed on a relative fair value basis. Based on this allocation methodology, asset acquisitions do not result in the recognition of goodwill or a bargain purchase. The Company incurs internal transaction costs, which are direct, incremental internal costs related to acquisitions, that are recorded within general and administrative expense. Additionally, for build-to-suit investments in which the Company may engage a developer to construct a property or provide funds to a tenant to develop a property, the Company capitalizes the funds provided to the developer/tenant and real estate taxes, if applicable, during the construction period.

To determine the fair value of assets acquired and liabilities assumed in an acquisition, which generally include land, building, improvements, and intangibles, such as the value of above- and below-market leases and origination costs associated with the in-place leases at the acquisition date, the Company utilizes various estimates, processes and information to determine the as-if-vacant property value. Estimates of value are made using customary methods, including data from appraisals, comparable sales, and discounted cash flow analyses. Estimates of future cash flows are based on a number of factors including the historical operating results, known trends, and market/economic conditions that may affect the property. The Company assesses the fair value of leases assumed at acquisition based upon estimated cash flow projections that utilize appropriate discount rates and available market information. Refer to the policy section "Intangible Assets and Liabilities" for more information on the Company’s accounting for intangibles.

Depreciation is computed using the straight-line method over the shorter of the estimated useful life at acquisition of the capitalized item or 40 years for buildings, five to ten years for building equipment and fixtures, and the lesser of the useful life or the remaining lease term for tenant improvements and leasehold interests. Maintenance and repair expenditures are charged to expense as incurred.

For transactions that qualify as business combinations, the Company recognizes the assets acquired and liabilities assumed at fair value, including the value of intangible assets and liabilities, and any excess or deficit of the consideration transferred relative to the fair value of the net assets acquired is recorded as goodwill or a bargain purchase gain, as appropriate. Acquisition costs of business combinations are expensed as incurred.

Capital Improvements

In leasing space, the Company may provide funding to the lessee through a tenant allowance. Certain improvements are capitalized when they are determined to increase the useful life of the building. During construction of qualifying projects, the Company capitalizes project management fees as permitted to be charged under the lease, if incremental and identifiable. In accounting for tenant allowances, the Company determines whether the allowance represents funding for the construction of leasehold improvements and evaluates the ownership of such improvements. If the Company is considered the owner of the leasehold improvements, the Company capitalizes the amount of the tenant allowance and depreciates it over the shorter of the useful life of the leasehold improvements or the lease term. If the tenant allowance represents a payment for a purpose other than funding leasehold improvements, or in the event the Company is not considered the owner of the improvements for accounting purposes, the allowance is considered to be a lease incentive and is recognized over the lease term as a reduction of rental revenue.

Impairments and Disposals

The Company reviews the recoverability of a property’s carrying value when circumstances indicate a possible impairment of the value of a property, such as an adverse change in future expected occupancy or a significant decrease in the market price of an asset. The review of recoverability is based on an estimate of the future undiscounted cash flows, excluding interest charges, expected to result from the property’s use and eventual disposition. These estimates consider factors such as changes in strategy resulting in an increased or decreased holding period, expected future operating income, market and other applicable trends and residual value, as well as the effects of leasing demand, competition and other factors. If management determines impairment exists due to the inability to recover the carrying value of a property, for properties to be held and used, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property and for assets held for sale, an impairment loss is recorded to the extent that the carrying value exceeds the fair value less estimated cost of disposal. These assessments are recorded as an impairment loss in the Consolidated Statements of Operations in the period the determination is made. The estimated fair value of the asset becomes its new cost basis. For a depreciable long-lived asset to be held and used, the new cost basis will be depreciated or amortized over the remaining useful life of that asset.

Cash and Cash Equivalents

Cash, Cash Equivalents, and Restricted Cash

The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. The Company's restricted cash primarily consists of reserves for certain capital improvements, leasing, interest and real estate tax and insurance payments as required by certain mortgage note obligations, as well as proceeds from property sales held by qualified intermediaries to be used for tax-deferred, like-kind exchanges under section 1031 of the Internal Revenue Code of 1986, as amended, or the Internal Revenue Code.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sums to the total of the same such amounts shown in the Consolidated Statements of Cash Flows.

	As of March 31,
	2018		2017
Cash and cash equivalents	$	41,964	$	56,256
Restricted cash	15,041		13,101
Total cash, cash equivalents, and restricted cash	$	57,005	$	69,357

Variable Interest Entities, Consolidated and Unconsolidated

The Company’s five consolidated VIEs as of March 31, 2018 and December 31, 2017 included the Operating Partnership and four land parcels in Fort Mill, South Carolina acquired by an investment entity formed in December 2017, on which it will fund the development of fourindustrial facilities, or the Lakemont Development Investment. The Company has a 95.0% interest in the Lakemont Development Investment and will acquire the seller’s retained 5.0% interest when the properties are developed and leased. As of March 31, 2018 and December 31, 2017, the Company’s carrying value of the Lakemont Development Investment was $4,674 and $4,584, respectively.

Unconsolidated VIEs

The Company’s two unconsolidated VIEs as of March 31, 2018 and December 31, 2017 included its retained non-investment grade subordinate bonds, preferred shares and ordinary shares of two collateralized debt obligations, or CDOs, which are collectively herein referred to as the Retained CDO Bonds. Refer to the “Other Assets” section of this Note 2 and also to Note 7 for more information on the accounting and valuation of the Retained CDO Bonds. As of March 31, 2018 and December 31, 2017, the Company’s carrying value of the Retained CDO Bonds was $5,800 and $5,527, respectively.

Tenant and Other Receivables

Tenant and Other Receivables

Tenant and other receivables are derived from rental revenue, tenant reimbursements, and management fees.

Rental revenue is recorded on a straight-line basis over the initial term of the lease. Since many leases provide for rental increases at specified intervals, straight-line basis accounting requires the Company to record a receivable, and include in revenues, unbilled rent receivables that will only be received if the tenant makes all rent payments required through the expiration of the initial term of the lease. Tenant and other receivables also include receivables related to tenant reimbursements for common area maintenance expenses and certain other recoverable expenses that are recognized as revenue in the period in which the related expenses are incurred.

Tenant and other receivables are recorded net of the allowances for doubtful accounts, which as of March 31, 2018 and December 31, 2017 were $670 and $638, respectively. The Company continually reviews receivables related to rent, tenant reimbursements, and management fees, including incentive fees, and determines collectability by taking into consideration the tenant or asset management clients’ payment history, the financial condition of the tenant or asset management client, business conditions in the industry in which the tenant or asset management client operates and economic conditions in the area in which the property or asset management client is located. In the event that the collectability of a receivable is in doubt, the Company increases the allowance for doubtful accounts or records a direct write-off of the receivable, as appropriate.

Intangible Assets and Liabilities

Intangible Assets and Liabilities

As discussed above in policy section, "Real Estate Acquisitions," the Company follows the acquisition method of accounting for its asset acquisitions and business combinations and thus allocates the purchase price of acquired properties to tangible and identifiable intangible assets acquired based on their respective fair values. Identifiable intangible assets include amounts allocated to acquired leases for above- and below-market lease rates and the value of in-place leases. Management also considers information obtained about each property as a result of its pre-acquisition due diligence.

Above-market and below-market lease values for properties acquired are recorded based on the present value of the difference between the contractual amount to be paid pursuant to each in-place lease and management’s estimate of the fair market lease rate for each such in-place lease, measured over a period equal to the remaining non-cancelable term of the lease. The present value calculation utilizes a discount rate that reflects the risks associated with the leases acquired. The above-market and below-market lease values are amortized as a reduction of and increase to rental revenue, respectively, over the remaining non-cancelable terms of the respective leases. If a tenant terminates its lease prior to its contractual expiration and no future rental payments will be received, any unamortized balance of the market lease intangibles will be written off to rental revenue.

The aggregate value of in-place leases represents the costs of leasing costs, other tenant related costs, and lost revenue that the Company did not have to incur by acquiring a property that is already occupied. Factors considered by management in its analysis of the in-place lease intangibles include an estimate of carrying costs during the expected lease-up period for each property taking into account current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rentals at market rates during the anticipated lease-up period. Management also estimates costs to execute similar leases including leasing commissions and other related expenses. The value of in-place leases is amortized to depreciation and amortization expense over the remaining non-cancelable term of the respective leases. In no event does the amortization period for intangible assets exceed the remaining depreciable life of the building. If a tenant terminates its lease prior to its contractual expiration and no future rental payments will be received, any unamortized balance of the in-place lease intangible will be written off to depreciation and amortization expense.

Above-market and below-market ground rent intangibles are recorded for properties acquired in which the Company is the lessee pursuant to a ground lease assumed at acquisition. The above-market and below-market ground rent intangibles are valued similarly to above-market and below-market leases, except that, because the Company is the lessee as opposed to the lessor, the above-market and below-market ground lease values are amortized as a reduction of and increase to rent expense, respectively, over the remaining non-cancelable terms of the respective leases.

Revenue Recognition

Revenue

Adoption of ASC Topic 606, "Revenue from Contracts with Customers"

The Company adopted ASC Topic 606, which is described below in the section “Recently Issued Accounting Pronouncements,” on January 1, 2018 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under the new guidance, while prior period amounts are not adjusted and continue to be reported in accordance with the historic accounting guidance in ASC Topic 605. As a result of adoption, the Company recorded an increase to its opening retained earnings balance of $663 as of January 1, 2018, which represents the cumulative impact of the new guidance and is related to the Company’s sale of real estate to Strategic Office Partners in 2016. There was no impact to revenues recorded for the three months ended March 31, 2018 as a result of adoption of the new revenue guidance.

Revenue Recognition

The Company recognizes revenue when control of the promised goods or services is transferred to a customer, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company’s primary sources of revenue include rental revenue, third-party management fees, operating expense reimbursements, and other income, which are disaggregated on the Consolidated Statements of Operations and are described in detail below.

Real Estate Investments

Rental revenue from leases on real estate investments is recognized on a straight-line basis over the term of the lease, regardless of when payments are contractually due. For leases on properties that are under construction at the time of acquisition, the Company begins recognition of rental revenue upon completion of construction of the leased asset and delivery of the leased asset to the tenant.

The Company’s lease agreements with tenants also generally contain provisions that require tenants to reimburse the Company for real estate taxes, insurance costs, common area maintenance costs, and other property-related expenses. Under lease arrangements in which the Company is the primary obligor for these expenses, the Company recognizes such amounts as both revenues and operating expenses. Under lease arrangements in which the tenant pays these expenses directly, such amounts are not included in revenues or expenses. These reimbursement amounts are recognized in the period in which the related expenses are incurred.

Management Fees

The Company’s asset and property management agreements may contain provisions for fees related to dispositions, administration of the assets including fees related to accounting, valuation and legal services, and management of capital improvements or projects on the underlying assets. The Company recognizes revenue for fees pursuant to its management agreements in the period in which they are earned. Deferred revenue from management fees received prior to the date earned are included in other liabilities on the Consolidated Balance Sheets. For management fee agreements that include multiple performance obligations, the Company allocates revenue to each performance obligation based on its relative standalone selling price, which is primarily determined based on the prices charged to customers.

Certain of the Company’s asset management contracts and agreements with its unconsolidated equity investments include provisions that allow it to earn additional fees, generally described as incentive fees or promoted interests, based on the achievement of a targeted valuation or the achievement of a certain internal rate of return on the managed assets held by third parties or the equity investment. The Company’s incentive fees are accounted for as variable consideration and revenue is recognized for them based on the Company’s estimate of the expected amount to which it will be entitled in exchange for its services. The Company recognizes promoted interest in the period in which it is determined to be appropriately earned pursuant to the terms of the specific agreement. The values of incentive fees and promoted interest fees are periodically evaluated by management.

Other Income

Other income primarily consists of income accretion on the Company’s Retained CDO Bonds, realized foreign currency exchange gains (losses), and interest income.

Foreign Currency

Foreign Currency

The Company's European management platform performs asset and property management services in Europe. The Company has unconsolidated equity investments in Europe and Asia and previously had two wholly-owned properties in Canada until their dispositions in March 2017. The Company also has borrowings outstanding in euros and British pounds sterling under the multicurrency portion of its revolving credit facility. Refer to Note 4 for more information on the Company’s foreign unconsolidated equity investments.

Other Assets

Other Assets

The Company includes prepaid expenses, capitalized software costs, contract intangible assets, deferred costs, loan investments, goodwill, derivative assets, and Retained CDO Bonds in other assets.

Loan Investments

The Company may originate loans related to specific real estate development projects. In October 2017, the Company entered into an agreement to provide a mezzanine construction loan facility with a maximum commitment of $250,000 to an industrial developer as borrower. As of March 31, 2018 and December 31, 2017, the carrying value of the Company’s loan investments was $22,437 and $22,154, respectively, which represents the cost, net of accumulated amortization of loan costs. As of March 31, 2018, the loan investments had a weighted average interest rate of 10.47%. The Company evaluates its loan investments for possible credit losses each period. There were no loan reserves recorded during the three months ended March 31, 2018 and all of the Company’s loan investments were performing in accordance with the terms of the relevant investments as of March 31, 2018.

Goodwill

Goodwill

The Company recognized goodwill of $3,802 related to the acquisition of Gramercy Europe Limited, which it adjusts each reporting period for the effect of foreign currency translation adjustments and tests for impairment on an annual basis, or more frequently if events or changes in circumstances indicate that the asset might be impaired. The carrying value of goodwill at March 31, 2018 and December 31, 2017 was $3,394 and $3,272, respectively. The Company did not record any impairment on its goodwill during the three months ended March 31, 2018.

Retained CDO Bonds

Retained CDO Bonds

The Retained CDO Bonds are non-investment grade subordinate bonds, preferred shares and ordinary shares of two CDOs. Management estimated the timing and amount of cash flows expected to be collected and recognized an investment in the Retained CDO Bonds equal to the net present value of these discounted cash flows. There is no guarantee that the Company will realize any proceeds from this investment, or what the timing will be for the expected remaining life of the Retained CDO Bonds. The Company considers these investments to be not of high credit quality and does not expect a full recovery of interest and principal. Therefore, the Company has suspended interest income accruals on these investments. The Company classifies the Retained CDO Bonds as available for sale. On a quarterly basis, the Company evaluates the Retained CDO Bonds to determine whether significant changes in estimated cash flows or unrealized losses on these investments, if any, reflect a decline in value which is other-than-temporary. If there is a decrease in estimated cash flows and the investment is in an unrealized loss position, the Company will record an other-than-temporary impairment, or OTTI, in the Consolidated Statements of Operations. To determine the component of the OTTI related to expected credit losses, the Company compares the amortized cost basis of the Retained CDO Bonds to the present value of the revised expected cash flows, discounted using the pre-impairment effective yield. Conversely, if the security is in an unrealized gain position and there is a decrease or significant increase in expected cash flows, the Company will prospectively adjust the yield using the effective yield method. Refer to Note 7 for further discussion regarding the fair value measurement of the Retained CDO Bonds.

Concentrations of Credit Risk

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash investments, debt investments and accounts receivable. The Company places its cash investments in excess of insured amounts with high quality financial institutions.

Concentrations of credit risk also arise when a number of the Company’s tenants or asset management clients are engaged in similar business activities or are subject to similar economic risks or conditions that could cause their inability to meet contractual obligations to the Company. The Company regularly monitors its portfolio to assess potential concentrations of credit risk. Management believes the current credit risk portfolio is reasonably well diversified. During the three months ended March 31, 2018 and 2017, there were no tenants that accounted for 10.0% or more of the Company's rental revenue. Additionally, for the three months ended March 31, 2018, there were three states, Illinois, Texas, and Florida, that each accounted for 10.0% or more of the Company’s rental revenue.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09 (Topic 606), Revenue from Contracts with Customers, which is a comprehensive new revenue recognition model requiring a company to recognize revenue to depict the transfer of goods or services to customers in an amount reflecting the consideration it expects to receive in exchange for those goods or services. In April 2016 and February 2017, the FASB issued ASU 2016-10 and ASU 2017-05, respectively, which further clarified the new revenue recognition guidance under ASC Topic 606. The Company adopted the guidance on January 1, 2018 using the modified retrospective method, which did not have a material impact on its Consolidated Financial Statements. Refer to the “Revenue” section above for further detail.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities. The guidance requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and to record changes in instruments specific credit risk for financial liabilities measured under the fair value option in other comprehensive income. The update is effective for fiscal years beginning after December 15, 2017, and for interim periods therein. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements. Refer to Note 8 for more information.

In February 2016, the FASB issued ASU 2016-02, Leases, which amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. The update will be effective beginning in the first quarter of 2019 and early adoption is permitted. The new standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company’s accounting for leases in which it is a lessor, which represents most of its leasing arrangements, will be largely unchanged under ASU 2016-02; however, the Company is a lessee in several operating and ground leases and the accounting for these arrangements is more significantly impacted by the new standard. Pursuant to the new guidance, lessees are required to record a right-of-use asset and a lease liability for all leases with a term of greater than 12 months regardless of their classification. The Company is continuing to evaluate the impact of adopting the new leases standard on its Consolidated Financial Statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows Classification of Certain Cash Receipts and Cash Payments, which serves to reduce the diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The update is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years, with early adoption permitted. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements.

In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation: Scope of Modification Accounting. The amendment provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. The guidance is effective for annual and interim periods beginning after December 15, 2017, with early adoption permitted under certain circumstances. The Company adopted this standard in the first quarter of 2018 and the adoption did not have a material impact on its Consolidated Financial Statements.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities. The purpose of this updated guidance is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. The transition guidance provides companies with the option of early adopting the new standard using a modified retrospective transition method in any interim period after issuance of the update, or alternatively requires adoption for fiscal years beginning after December 15, 2018. In the first quarter of 2018, the Company early adopted this standard and the adoption did not have a material impact on its Consolidated Financial Statements.

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Real Estate Investments Real Estate Investments (Tables)

3 Months Ended

Mar. 31, 2018

Real Estate [Abstract]

Schedule of Real Estate Investments

Investments in real estate properties consisted of the following:

	March 31, 2018					December 31, 2017
	Square feet1	Number of properties	Investment			Square feet1	Number of properties	Investment
Operating properties2	80,884,942	360	$	5,811,702		82,146,063	363	$	5,857,906
Land parcels		2	7,075				2	7,075
Less accumulated depreciation			(368,815		)			(333,151		)
Total operating properties and land parcels			$	5,449,962				$	5,531,830
Development properties	1,503,300	5	12,092			1,630,022	6	22,843
Total	82,388,242	367	$	5,462,054		83,776,085	371	$	5,554,673

1. Represents rentable square feet for operating properties and projected rentable square feet upon completion for development properties.

2. Includes development properties that have been completed as of the end of the period.

Summary of Acquisitions

Real estate acquisition activity for the three months ended March 31, 2018 and 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
Number of operating properties	1		7
Rentable square feet of operating properties	162,056		2,257,311
Total purchase price of all acquisitions	$	10,550	$	124,672

Summary of Dispositions

Real estate disposition activity for the three months ended March 31, 2018 and 2017 was as follows:

	Three Months Ended March 31,
	2018		2017
Number of properties1	5		7
Rentable square feet	1,546,091		487,872
Gross proceeds	$	111,012	$	51,683
Impairment of real estate investments related to asset dispositions during the period2	$	—	$	—
Net gain on disposals	$	16,255	$	17,377

1. During the three months ended March 31, 2018, the Company sold five properties and one warehouse from another asset.

2. Although there were no impairments recognized related to assets disposed during the three months ended March 31, 2018 and 2017, as presented in the table, the Company recognized impairments on real estate investments of $12,771 during the three months ended March 31, 2017 related to properties held as of March 31, 2017, for which the Company determined there were nonrecoverable declines in value.

Summary of Intangibles

Intangible assets and liabilities consisted of the following:

	Weighted average amortization period (years)	March 31, 2018		December 31, 2017
Intangible assets:
In-place leases, net of accumulated amortization of $214,664 and $194,836	9.3	$	513,423	$	545,782
Above-market leases, net of accumulated amortization of $26,854 and $25,229	6.8	43,979		46,713
Below-market ground rent, net of accumulated amortization of $421 and $408	17.5	5,811		6,064
Total intangible assets		$	563,213	$	598,559
Intangible liabilities:
Below-market leases, net of accumulated amortization of $30,685 and $28,516	39.5	$	152,758	$	159,652
Above-market ground rent, net of accumulated amortization of $516 and $462	32.0	6,786		6,839
Total intangible liabilities		$	159,544	$	166,491

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table provides the projected amortization expense of the intangible assets and liabilities for the next five years:

	April 1 to December 31, 2018			2019			2020			2021			2022
Depreciation and amortization expense	$	70,211		$	84,228		$	70,822		$	59,528		$	46,652
Rental revenue increase	$	(1,571	)	$	(2,520	)	$	(4,004	)	$	(4,168	)	$	(6,260	)

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Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Schedule of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheets that sums to the total of the same such amounts shown in the Consolidated Statements of Cash Flows.

	As of March 31,
	2018		2017
Cash and cash equivalents	$	41,964	$	56,256
Restricted cash	15,041		13,101
Total cash, cash equivalents, and restricted cash	$	57,005	$	69,357

Schedule of Retained Collateralized Debt Obligation Bonds

A summary of the Company’s Retained CDO Bonds as of March 31, 2018 is as follows:

Number of Securities	Face Value		Amortized Cost		Gross Unrealized Gain		Other-Than-Temporary Impairment		Fair Value		Weighted Average Expected Life (years)
6	$	329,597	$	5,431	$	369	$	—	$	5,800	1.1

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Unconsolidated Equity Investments (Tables)

3 Months Ended

Mar. 31, 2018

Investments in and Advances to Affiliates, Schedule of Investments [Abstract]

Equity Method Investments

As of March 31, 2018 and December 31, 2017, the Company owned properties through unconsolidated equity investments and had investment interests in these unconsolidated entities as follows:

	As of March 31, 2018								As of December 31, 2017
Investment	Ownership %		Voting Interest %		Partner	Investment in Unconsolidated Equity Investment 1		No. of Properties	Investment in Unconsolidated Equity Investment 1		No. of Properties
Strategic Office Partners	25.0	%	25.0	%	TPG Real Estate	$	28,792	13	$	28,243	13
E-Commerce JV	51.0	%	50.0	%	Ample Glow Investments	43,502		2	17,798		—
Goodman UK JV	80.0	%	50.0	%	Goodman Group	15,980		1	15,768		1
Gramercy European Property Fund III	19.9	%	50.0	%	Various	5,363		2	2,949		—
Other2	5.1% - 50.0%		5.1% - 50.0%		Various	5,476		3	5,456		3
Total						$	99,113	21	$	70,214	17

1. The amounts presented include a basis difference of $2,011 and $1,943, net of accumulated amortization, for the Goodman UK JV as of March 31, 2018 and December 31, 2017, respectively. The amounts presented include a basis difference of $(3,916), net of accumulated amortization, for the E-Commerce JV as of March 31, 2018.

2. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

Summary Investment Holdings

The following is a summary of the Company’s unconsolidated equity investments for the three months endedMarch 31, 2018:

	Unconsolidated Equity Investments
Balance at January 1, 2018	$	70,214
Contributions to unconsolidated equity investments	28,731
Equity in net loss of unconsolidated equity investments, including adjustments for basis differences	(926		)
Other comprehensive income of unconsolidated equity investments	431
Cumulative effect of accounting change	663
Balance at March 31, 2018	$	99,113

Schedule of Combined Balance Sheet for the Company's Joint Venture

The following are the balance sheets for the Company’s unconsolidated equity investments at March 31, 2018:

	Strategic Office Partners		E-Commerce JV		Goodman UK JV		Gramercy European Property Fund III		Other1
Assets:
Real estate assets, net2	$	264,099	$	149,895	$	19,150	$	62,284	$	108,993
Other assets	80,897		48,894		1,751		5,428		18,421
Total assets	$	344,996	$	198,789	$	20,901	$	67,712	$	127,414
Liabilities and members' equity:
Mortgage notes payable	$	213,699	$	108,473	$	—	$	35,873	$	38,341
Other liabilities	16,698		5,018		732		4,850		19,043
Total liabilities	230,397		113,491		732		40,723		57,384
Company's equity	28,792		43,502		15,980		5,363		5,476
Other members' equity	85,807		41,796		4,189		21,626		64,554
Liabilities and members' equity	$	344,996	$	198,789	$	20,901	$	67,712	$	127,414

1. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

2. Includes basis adjustments recorded by the Company to adjust the unconsolidated equity investments to fair value.

The following are the balance sheets for the Company’s unconsolidated equity investments at December 31, 2017:

	Strategic Office Partners		E-Commerce JV		Goodman UK JV		Other1
Assets:
Real estate assets, net2	$	265,014	$	—	$	18,633	$	107,949
Other assets	78,243		35,727		1,473		34,022
Total assets	$	343,257	$	35,727	$	20,106	$	141,971
Liabilities and members' equity:
Mortgage notes payable	$	213,205	$	—	$	—	$	38,662
Other liabilities	15,002		830		203		19,329
Total liabilities	228,207		830		203		57,991
Company's equity	28,243		17,798		15,768		8,405
Other members' equity	86,807		17,099		4,135		75,575
Liabilities and members' equity	$	343,257	$	35,727	$	20,106	$	141,971

1. Includes CBRE Strategic Partners Asia, the Philips JV, the Morristown JV, and the Gramercy European Property Fund III.

2. Includes basis adjustments recorded by the Company to adjust the unconsolidated equity investments to fair value.

Schedule of Long-term Debt

The following is a summary of the secured financing arrangements within the Company’s unconsolidated equity investments as of March 31, 2018:

					Outstanding Balance2
Property	Unconsolidated Equity Investment	Economic Ownership	Interest Rate1	Maturity Date	March 31, 2018			December 31, 2017
Strategic Office Partners Facility 13	Strategic Office Partners	25.0%	4.70%	10/7/2019	$	169,380		$	169,380
Strategic Office Partners Facility 24	Strategic Office Partners	25.0%	9.21%	10/8/2020	39,540			39,540
E-Commerce JV Facility4	E-Commerce JV	51.0%	3.38%	2/10/2023	109,846			—
Gramercy European Property Fund III Facility4	Gramercy European Property Fund III	19.9%	1.57%	3/12/2023	36,084			—
Henderson, NV	Strategic Office Partners	25.0%	4.75%	8/6/2025	8,593			8,636
Somerset, NJ	Philips JV	25.0%	6.90%	9/11/2035	38,341			38,662
Total mortgage notes payable					$	401,784		$	256,218
Net deferred financing costs and net debt discount					(5,398		)	(4,351		)
Total mortgage notes payable, net					$	396,386		$	251,867

1. Represents the current effective rate as of March 31, 2018, including the swapped interest rate for mortgage notes that have interest rate swaps. The current interest rate is not adjusted to include the amortization of fair market value premiums or discounts.

2. Mortgage notes are presented at 100.0% of the amount held by the unconsolidated equity investment.

3. As of March 31, 2018, there were ten properties under this mortgage note.

4. As of March 31, 2018, there were two properties under each of these mortgage notes.

Schedule of Combined Income Statement for the Company's Joint Venture

The following are the statements of operations for the Company’s unconsolidated equity investments for the three months ended March 31, 2018:

	Strategic Office Partners			E-Commerce JV			Goodman UK JV			Gramercy European Property Fund III			Other1
Revenues	$	11,143		$	2,165		$	—		$	482		$	1,994
Operating expenses	4,151			583			260			682			106
Interest expense	3,113			669			—			97			666
Depreciation and amortization	4,823			862			206			209			333
Total expenses	12,087			2,114			466			988			1,105
Net income (loss) from operations	(944		)	51			(466		)	(506		)	889
Gain on derivatives	492			—			—			—			—
Loss on extinguishment of debt	—			(1,200		)	—						—
Net income (loss)	$	(452	)	$	(1,149	)	$	(466	)	$	(506	)	$	889
Company's share in net income (loss)	$	26		$	(520	)	$	(373	)	$	(93	)	$	20
Adjustments for REIT basis	—			18			(4		)	—			—
Company's equity in net income (loss) within continuing operations	$	26		$	(502	)	$	(377	)	$	(93	)	$	20

1. Includes CBRE Strategic Partners Asia, the Philips JV, and the Morristown JV.

The following are the statements of operations for the Company’s unconsolidated equity investments for the three months ended March 31, 2017:

	Gramercy European Property Fund 1
	Goodman Europe JV			Gramercy European Property Fund2		Total			Strategic Office Partners			Goodman UK JV			Other 3
Revenues	$	4,955		$	10,118	$	15,073		$	5,526		$	295		$	(1,331	)
Operating expenses	922			2,951		3,873			1,474			302			576
Interest expense	672			1,474		2,146			1,510			—			641
Depreciation and amortization	2,021			4,473		6,494			2,503			375			333
Total expenses	3,615			8,898		12,513			5,487			677			1,550
Net income (loss) from operations	1,340			1,220		2,560			39			(382		)	(2,881		)
Gain (loss) on derivatives	—			1,221		1,221			(349		)	—			—
Provision for taxes	(17		)	146		129			—			(8		)	—
Net income (loss)	$	1,323		$	2,587	$	3,910		$	(310	)	$	(390	)	$	(2,881	)
Company’s share in net income (loss)	$	67		$	446	$	513		$	(15	)	$	(312	)	$	(155	)
Adjustments for REIT basis	(36		)	—		(36		)	—			(89		)	—
Company’s equity in net income (loss) within continuing operations	$	31		$	446	$	477		$	(15	)	$	(401	)	$	(155	)

1. As of and for the three months ended March 31, 2017, the Company had a 5.1% direct interest in the Goodman Europe JV as well as an indirect interest in the remaining 94.9% interest that was held through the Company’s 14.2% interest in the Gramercy European Property Fund. For the three months ended March 31, 2017, the Company’s equity in net income (loss) from the entities is based on these ownership interest percentages during the period.

2. Excludes the results of the Gramercy European Property Fund’s 94.9% interest in the Goodman Europe JV, as the Goodman Europe JV is separately presented.

3. Includes CBRE Strategic Partners Asia, the Philips JV, the Morristown JV, and European Fund Carry Co.

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Debt Obligations (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of Mortgage Notes Payable

The following is a summary of the Company’s secured financing arrangements as of March 31, 2018 and December 31, 2017:

Property	Interest Rate 1	Maturity Date	Outstanding Balance
			March 31, 2018		December 31, 2017
Greenwood, IN	3.59%	6/15/2018	$	7,211	$	7,257
Greenfield, IN	3.63%	6/15/2018	5,828		5,865
Logistics Portfolio - Pool 32	3.96%	8/1/2018	43,302		43,302
Philadelphia, PA	4.99%	1/1/2019	11,842		11,943
Bridgeview, IL	3.90%	5/1/2019	5,792		5,838
Spartanburg, SC	3.20%	6/1/2019	530		632
Charleston, SC	3.11%	8/1/2019	320		457
Lawrence, IN	5.02%	1/1/2020	19,896		20,061
Charlotte, NC	3.28%	1/1/2020	1,363		1,538
Hawthorne, CA	3.52%	8/1/2020	17,042		17,207
Charleston, SC	3.32%	10/1/2020	696		758
Charleston, SC	2.97%	10/1/2020	684		746
Charleston, SC	3.37%	10/1/2020	684		746
Charlotte, NC	3.38%	10/1/2020	594		647
Des Plaines, IL	5.54%	10/31/2020	2,365		2,385
Waco, TX	4.75%	12/19/2020	14,815		14,890
Deerfield, IL	3.71%	1/1/2021	10,355		10,447
Winston-Salem, NC	3.41%	6/1/2021	3,135		3,354
Winston-Salem, NC	3.42%	7/1/2021	1,043		1,114
Logistics Portfolio - Pool 12	4.27%	1/1/2022	37,856		38,107
CCC Portfolio2	4.24%	10/6/2022	22,691		22,814
Logistics Portfolio - Pool 42	4.36%	12/5/2022	79,500		79,500
Romeoville, IL	3.80%	4/6/2023	24,835		24,951
Romeoville, IL3	9.37%	4/6/2023	6,613		6,623
KIK USA Portfolio2	4.31%	7/6/2023	7,077		7,154
Yuma, AZ	5.27%	12/6/2023	11,804		11,858
Allentown, PA	5.16%	1/6/2024	22,586		22,690
Spartanburg, SC	3.72%	2/1/2024	5,447		5,635
Natick, MA	5.21%	3/1/2024	31,121		31,224
Natick, MA3	10.38%	3/1/2024	3,458		3,469
Maple Grove, MN	3.88%	5/6/2024	16,291		16,380
Curtis Bay, MD	4.31%	7/1/2024	13,500		13,500
Rialto, CA	3.91%	8/1/2024	54,543		54,741
Houston, TX	3.68%	9/1/2024	26,000		26,000
Durham, NC	4.02%	9/6/2024	3,614		3,631
Charleston, SC	3.80%	2/1/2025	5,831		6,001
Hackettstown, NJ	5.49%	3/6/2026	9,420		9,455
Hutchins, TX	5.41%	6/1/2029	21,269		21,578
Total mortgage notes payable			$	550,953	$	554,498
Net deferred financing costs and net debt premium			8,520		9,023
Total mortgage notes payable, net			$	559,473	$	563,521

1. Represents the interest rate as of March 31, 2018 that was recorded for financial reporting purposes, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

2. As of March 31, 2018, there were two properties under the Logistics Portfolio - Pool 3 mortgage, three properties under the Logistics Portfolio - Pool 1 mortgage, five properties under the CCC Portfolio mortgage, six properties under the Logistics Portfolio - Pool 4 mortgage, and three properties under the KIK USA Portfolio mortgage.

Schedule of Line of Credit Facilities

The terms of the Company’s unsecured debt obligations and outstanding balances as of March 31, 2018 and December 31, 2017 are set forth in the table below:

	Stated Interest Rate		Effective Interest Rate 1		Maturity Date	Outstanding Balance
						March 31, 2018			December 31, 2017
2015 Revolving Credit Facility - USD tranche	2.89	%	2.89	%	1/8/2020	$	275,000		$	345,000
2015 Revolving Credit Facility - Multicurrency tranche	1.32	%	1.32	%	1/8/2020	17,543			12,162
3-Year Term Loan	2.91	%	2.33	%	1/8/2019	300,000			300,000
5-Year Term Loan	2.91	%	2.70	%	1/8/2021	750,000			750,000
7-Year Term Loan	2.76	%	3.00	%	1/9/2023	400,000			400,000
2015 Senior Unsecured Notes	4.97	%	5.07	%	12/17/2024	150,000			150,000
2016 Senior Unsecured Notes	3.89	%	4.00	%	12/15/2022	150,000			150,000
2016 Senior Unsecured Notes	4.26	%	4.38	%	12/15/2025	100,000			100,000
2016 Senior Unsecured Notes	4.32	%	4.43	%	12/15/2026	100,000			100,000
Total unsecured debt						2,242,543			2,307,162
Net deferred financing costs and net debt discount						(4,872		)	(5,063		)
Total unsecured debt, net						$	2,237,671		$	2,302,099

1. Represents the rate at which interest expense is recorded for financial reporting purposes as of March 31, 2018, which reflects the effect of interest rate swaps and amortization of financing costs and fair market value premiums or discounts.

Schedule of Maturities of Long-term Debt

Combined aggregate principal maturities of the Company’s unsecured debt obligations and non-recourse mortgages, in addition to associated interest payments, as of March 31, 2018 are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Above market interest		Total
2015 Revolving Credit Facility	$	—	$	—	$	292,543	$	—	$	—	$	—	$	—	$	292,543
Term Loans	—		300,000		—		750,000		—		400,000		—		1,450,000
Mortgage Notes Payable 1	66,599		30,450		62,834		19,256		141,929		229,885		—		550,953
Senior Unsecured Notes	—		—		—		—		150,000		350,000		—		500,000
Interest Payments 2	82,144		97,025		87,135		57,199		53,364		64,772		3,648		445,287
Total	$	148,743	$	427,475	$	442,512	$	826,455	$	345,293	$	1,044,657	$	3,648	$	3,238,783

1. Mortgage note payments reflect accelerated repayment dates, when applicable, pursuant to the related agreement.

2. Interest payments do not reflect the effect of interest rate swaps.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Carrying Value and Fair Value of Financial Instruments

The following table presents the carrying value in the financial statements and approximate fair value of assets and liabilities measured on a recurring and non-recurring basis at March 31, 2018 and December 31, 2017:

	March 31, 2018				December 31, 2017
	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial assets:
Interest rate swaps	$	41,888	$	41,888	$	19,668	$	19,668
Retained CDO Bonds	5,800		5,800		5,527		5,527
Real estate investments1	—		—		87,996		87,996
Investment in CBRE Strategic Partners Asia	2,869		2,869		2,820		2,820
Loan investments2	22,437		20,990		22,154		21,362
Financial liabilities:
Interest rate swaps	$	13	$	13	$	173	$	173
Long-term debt:
2015 Revolving Credit Facility2	292,543		292,492		357,162		357,369
3-Year Term Loan2	300,000		300,090		300,000		300,091
5-Year Term Loan2	750,000		750,653		750,000		750,678
7-Year Term Loan2	398,241		400,020		398,152		400,010
Mortgage notes payable2	559,473		565,329		563,521		573,826
Senior Unsecured Notes2	496,887		502,349		496,785		513,229

1. Amount represents seven real estate investments that were impaired by the Company and held as of December 31, 2017.

2. Long-term debt instruments are classified as Level III due to the significance of unobservable inputs which are based upon management assumptions.

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Assets and liabilities measured at fair value on a recurring and non-recurring basis are categorized as follows:

At March 31, 2018	Total			Level I		Level II		Level III
Financial Assets:
Retained CDO Bonds	$	5,800		$	—	$	—	$	5,800
Investment in CBRE Strategic Partners Asia	2,869			—		—		2,869
Interest rate swaps	41,888			—		—		41,888
	$	50,557		$	—	$	—	$	50,557
Financial Liabilities:
Interest rate swaps	$	(13	)	$	—	$	—	$	(13	)
	$	(13	)	$	—	$	—	$	(13	)

At December 31, 2017	Total			Level I		Level II		Level III
Financial Assets:
Retained CDO Bonds	$	5,527		$	—	$	—	$	5,527
Real estate investments	87,996			—		—		87,996
Investment in CBRE Strategic Partners Asia	2,820			—		—		2,820
Interest rate swaps	19,668			—		—		19,668
	$	116,011		$	—	$	—	$	116,011
Financial Liabilities:
Interest rate swaps	$	(173	)	$	—	$	—	$	(173	)
	$	(173	)	$	—	$	—	$	(173	)

Fair Value, Assets and Liabilities Measured on Recurring Basis, Valuation Techniques

Quantitative information regarding the valuation techniques and the range of significant unobservable Level III inputs used to determine fair value measurements on a recurring basis as of March 31, 2018 are as follows:

Financial Asset (Liability)	Fair Value		Valuation Technique	Unobservable Inputs	Range
Non-investment grade, subordinate CDO bonds	$	5,800	Discounted cash flows	Discount rate	19.0%
Investment in CBRE Strategic Partners Asia	2,869		Discounted cash flows	Discount rate	20.0%
Interest rate swaps1	41,875		Hypothetical derivative method	Credit borrowing spread	110 to 190 basis points

1. Fair value includes interest rate swap liabilities with an aggregate value of $(13).

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following rollforward table reconciles the beginning and ending balances of financial assets (liabilities) measured at fair value on a recurring basis using Level III inputs as of March 31, 2018:

	Retained CDO Bonds			Investment in CBRE Strategic Partners Asia		Interest Rate Swaps		Total Financial Assets (Liabilities) - Level III
Balance at January 1, 2018	$	5,527		$	2,820	$	19,495	$	27,842
Amortization of discounts or premiums	321			—		330		651
Adjustments to fair value:
Unrealized gain on derivatives	—			—		22,050		22,050
Unrealized loss in other comprehensive income from fair value adjustment	(48		)	—		—		(48		)
Total gain on fair value adjustments	—			49		—		49
Balance at March 31, 2018	$	5,800		$	2,869	$	41,875	$	50,544

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following rollforward table reconciles the beginning and ending balances of financial assets (liabilities) measured at fair value on a recurring basis using Level III inputs as of March 31, 2018:

	Retained CDO Bonds			Investment in CBRE Strategic Partners Asia		Interest Rate Swaps		Total Financial Assets (Liabilities) - Level III
Balance at January 1, 2018	$	5,527		$	2,820	$	19,495	$	27,842
Amortization of discounts or premiums	321			—		330		651
Adjustments to fair value:
Unrealized gain on derivatives	—			—		22,050		22,050
Unrealized loss in other comprehensive income from fair value adjustment	(48		)	—		—		(48		)
Total gain on fair value adjustments	—			49		—		49
Balance at March 31, 2018	$	5,800		$	2,869	$	41,875	$	50,544

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Derivatives and Non-Derivative Hedging Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

The Company’s derivatives and hedging instruments as of March 31, 2018 are as follows:

	Benchmark Rate	Notional Value	Strike Rate	Effective Date	Expiration Date	Fair Value
Interest Rate Swap - Waco	1 mo. USD-LIBOR-BBA	14,815 USD	4.55%	12/19/2013	12/19/2020	$	(13	)
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.22%	12/19/2016	12/17/2018	615
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.23%	12/19/2016	12/17/2018	612
Interest Rate Swap - 3-Year Term Loan	1 mo. USD-LIBOR-BBA	100,000 USD	1.24%	12/19/2016	12/17/2018	604
Interest Rate Swap - 5-Year Term Loan	1 mo. USD-LIBOR-BBA	750,000 USD	1.60%	12/17/2015	12/17/2020	17,010
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	175,000 USD	1.82%	12/17/2015	1/9/2023	5,660
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	60,000 USD	1.95%	10/13/2017	1/9/2023	1,599
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	40,000 USD	2.01%	10/13/2017	1/9/2023	953
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	39,500 USD	1.96%	10/13/2017	1/9/2023	1,016
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	1.96%	10/13/2017	1/9/2023	809
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	31,500 USD	2.00%	10/13/2017	1/9/2023	765
Interest Rate Swap - 7-Year Term Loan	1 mo. USD-LIBOR-BBA	22,500 USD	1.95%	10/13/2017	1/9/2023	593
Forward Starting Swap1	3 mo. USD-LIBOR-BBA	250,000 USD	2.23%	12/20/2017	12/20/2027	11,652
Net Investment Hedge in GBP-denominated investments	USD-GBP exchange rate	9,000 GBP	N/A	7/15/2016	N/A	—
Net Investment Hedge in EUR-denominated investments	USD-EUR exchange rate	4,000 EUR	N/A	3/8/2018	N/A	—
Total hedging instruments						$	41,875

1. The forward starting swap has a mandatory early termination date of June 20, 2018.

Gain (Loss) Recognized On Interest Rate Swaps

The table below details the location in the financial statements of the gain or loss recognized on the interest rate swaps designated as cash flow hedges for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018		2017
Accumulated other comprehensive income:
Gain recognized in accumulated other comprehensive income1	$	22,153	$	—
Interest expense:
Gain reclassified from accumulated other comprehensive income into interest expense1	$	268	$	268
Gain recognized in interest expense (ineffective portion)2	—		46
Total recognized in interest expense on statements of operations	$	268	$	314

1. Periods prior to January 1, 2018, when the Company adopted ASU 2017-12, include only the effective portion and periods subsequent to January 1, 2018 include both the effective and ineffective portions as the two amounts are no longer separately measured and reported. The first quarter of 2018 includes $103 related to the adoption of ASU 2017-02.

2. Represents the ineffective portion and pertains only to periods prior to January 1, 2018, when the Company adopted ASU 2017-12.

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Shareholders' Equity (Deficit) of the Company (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

Earnings per share for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net income attributable to noncontrolling interest	(802		)	(154		)
Less: Nonforfeitable dividends allocated to participating shareholders	(203		)	(276		)
Less: Preferred share dividends	(1,559		)	(1,559		)
Net income available to common shares outstanding	$	25,300		$	7,292
Denominator – Weighted average shares:
Basic weighted average shares outstanding	160,408,136			140,907,399
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average shares outstanding	160,416,900			141,875,619

The Operating Partnership's earnings per unit for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net gain attributable to noncontrolling interest in other partnerships	—			(120		)
Less: Nonforfeitable dividends allocated to participating unitholders	(203		)	(276		)
Less: Preferred unit distributions	(1,559		)	(1,559		)
Net income available to common units outstanding	$	26,102		$	7,326
Denominator – Weighted average units:
Basic weighted average units outstanding	165,448,866			141,527,985
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average units outstanding	165,457,630			142,496,205

Schedule of Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) as of March 31, 2018 and December 31, 2017 is comprised of the following:

	March 31, 2018			December 31, 2017
Net unrealized gain on derivative securities	$	37,680		$	15,630
Net unrealized gain on debt instruments	369			417
Foreign currency translation adjustments:
Net gain on non-derivative net investment hedges1	(162		)	297
Other foreign currency translation adjustments	(4,757		)	(5,734		)
Reclassification of swap gain into interest expense	2,434			2,166
Cumulative effect of accounting change	103			—
Total accumulated other comprehensive income	$	35,667		$	12,776

1. The foreign currency translation adjustment associated with the Company’s non-derivative net investment hedge related to its European investments is included in other comprehensive income (loss). The balance reflects write-offs of $1,851 on the Company’s non-derivative net investment hedge during the year ended December 31, 2017.

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Partners' Capital of the Operating Partnership (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

Earnings per share for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net income attributable to noncontrolling interest	(802		)	(154		)
Less: Nonforfeitable dividends allocated to participating shareholders	(203		)	(276		)
Less: Preferred share dividends	(1,559		)	(1,559		)
Net income available to common shares outstanding	$	25,300		$	7,292
Denominator – Weighted average shares:
Basic weighted average shares outstanding	160,408,136			140,907,399
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average shares outstanding	160,416,900			141,875,619

The Operating Partnership's earnings per unit for the three months ended March 31, 2018 and 2017 are computed as follows:

	Three Months Ended March 31,
	2018			2017
Numerator – Income (loss):
Net income (loss) from continuing operations	$	11,609		$	(8,072	)
Net loss from discontinued operations	—			(24		)
Net income (loss) before net gain on disposals	11,609			(8,096		)
Net gain on disposals	16,255			17,377
Net income	27,864			9,281
Less: Net gain attributable to noncontrolling interest in other partnerships	—			(120		)
Less: Nonforfeitable dividends allocated to participating unitholders	(203		)	(276		)
Less: Preferred unit distributions	(1,559		)	(1,559		)
Net income available to common units outstanding	$	26,102		$	7,326
Denominator – Weighted average units:
Basic weighted average units outstanding	165,448,866			141,527,985
Effect of dilutive securities:
Unvested non-participating share based payment awards	—			71,848
Options	8,764			15,576
Exchangeable Senior Notes	—			880,796
Diluted weighted average units outstanding	165,457,630			142,496,205

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Noncontrolling Interests (Tables)

3 Months Ended

Mar. 31, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interest in the Operating Partnership

Below is the rollforward of the activity relating to the noncontrolling interests in the Operating Partnership as of March 31, 2018:

	Noncontrolling Interest
Balance at January 1, 2018	$	113,530
Issuance of noncontrolling interests in the Operating Partnership	25,142
Redemption of noncontrolling interests in the Operating Partnership	(130		)
Net income attribution	802
Fair value adjustments	232
Dividends	(1,776		)
Balance at March 31, 2018	$	137,800

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments

Future minimum rental payments to be made by the Company under these non-cancelable ground leases, excluding increases resulting from increases in the consumer price index, are as follows:

	April 1 to December 31, 2018		2019		2020		2021		2022		Thereafter		Total
Ground Leases - Operating	$	1,888	$	2,593	$	2,596	$	2,567	$	2,598	$	73,175	$	85,417
Ground Leases - Capital	1		—		—		—		—		329		330
Total	$	1,889	$	2,593	$	2,596	$	2,567	$	2,598	$	73,504	$	85,747

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Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Schedule of Supplemental Cash Flow Activities

The following table represents supplemental cash flow disclosures for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	2018			2017
Supplemental cash flow disclosures:
Interest paid	$	19,320		$	17,447
Income taxes paid	60			71
Proceeds from 1031 exchanges from sale of real estate	5			23,219
Use of funds from 1031 exchanges for acquisitions of real estate	(5		)	(23,218		)
Non-cash activity:
Fair value adjustment to noncontrolling interest in the Operating Partnership	$	232		$	(296	)
Debt assumed in acquisition of real estate	—			3,680
Debt transferred in disposition of real estate	—			(10,456		)
Non-cash acquisition of consolidated VIE	—			24,930
Dividend reinvestment plan proceeds	46			81
Redemption of units of noncontrolling interest in the Operating Partnership for common shares	(130		)	(2,164		)
Contributions to unconsolidated equity investments for units of noncontrolling interests in the operating partnership	25,141			—

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Business and Organization (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) ft² building Property	Mar. 31, 2017 ft² Property	Dec. 31, 2017 Property
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of properties	367		371
Number of Acquisitions	1
Purchase Price | $	$ 10,550
Number of properties	5	7
Rentable square feet | ft²	1,546,091	487,872
Proceeds from sale of property held-for-sale | $	$ 111,012
Wholly Owned Properties
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of properties | building	362
Area of real estate property | ft²	80,884,942
Occupancy rate	97.30%
Unconsolidated Properties
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of properties | building	20
GPT Operating Partnership LP
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Ownership percentage by noncontrolling owners	3.25%
Gramercy Asset Management | Commercial Lease Properties
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Commercial real estate assets | $	$ 1,960,000
Europe | Gramercy Asset Management | Commercial Lease Properties
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Commercial real estate assets | $	$ 1,408,000
CBRE Strategic Partners Asia
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of properties	1
Development Property
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of Acquisitions	1
Rentable square feet of operating properties | ft²	126,722
Disposed by Sale
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of properties	5
Rentable square feet | ft²	1,546,091
Disposed by Sale | Offices
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Number of properties	1

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Real Estate Investments (Schedule of Real Estate Investments) (Details) $ in Thousands	Mar. 31, 2018 USD ($) ft² Property	Dec. 31, 2017 USD ($) ft² Property
Real Estate [Line Items]
Rentable area (in sqft) | ft²	82,388,242	83,776,085
Number of properties | Property	367	371
Operating properties	$ 5,811,702	$ 5,857,906
Land parcels	7,075	7,075
Less: accumulated depreciation	(368,815)	(333,151)
Total operating properties and land parcels	5,449,962	5,531,830
Development properties	12,092	22,843
Total real estate investments, net	$ 5,462,054	$ 5,554,673
Operating parcels
Real Estate [Line Items]
Rentable area (in sqft) | ft²	80,884,942	82,146,063
Number of properties | Property	360	363
Land parcels
Real Estate [Line Items]
Number of properties | Property	2	2
Development properties
Real Estate [Line Items]
Rentable area (in sqft) | ft²	1,503,300	1,630,022
Number of properties | Property	5	6

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Real Estate Investments (Summary of Asset Acquisitions) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) ft² Property	Mar. 31, 2017 USD ($) ft² Property
Real Estate [Line Items]
Number of Acquisitions	1
Total purchase price of all acquisitions | $	$ 10,550	$ 124,672
Operating Properties
Real Estate [Line Items]
Number of operating properties	1	7
Rentable square feet of operating properties | ft²	162,056	2,257,311
Development Property
Real Estate [Line Items]
Number of Acquisitions	1
Rentable square feet of operating properties | ft²	126,722

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Significant Accounting Policies (Narrative) (Details)	1 Months Ended	3 Months Ended
	Dec. 31, 2017 USD ($) Property entity	Mar. 31, 2018 USD ($) Property entity collateralized_debt_obligations	Mar. 31, 2017 USD ($) Property	Dec. 31, 2016 USD ($)
Accounting Policies [Line Items]
Retained Earnings (Accumulated Deficit)	$ (1,369,872,000)	$ (1,404,416,000)
Net Cash Provided by (Used in) Operating Activities		$ 72,823,000	$ 58,479,000
Number of consolidated VIEs | entity	5	5
Number of Acquisitions | Property		1
Number of unconsolidated variable interest entities | entity	2	2
Number Of Investments Held | collateralized_debt_obligations		2
Contributions to unconsolidated equity investments		$ 28,731,000
Allowance for doubtful accounts receivable	$ 638,000	$ 670,000
Number of properties | Property	371	367
Impairment of goodwill		$ 0
Net Cash Provided by (Used in) Investing Activities		73,380,000	(87,638,000)
Net Cash Provided by (Used in) Financing Activities		(132,290,000)	18,188,000
Available-for-sale Securities
Accounting Policies [Line Items]
Retained collateralized debt obligations (CDOs) bonds, other-than-temporary impairment		$ 0	$ 4,890,000
Lakemont Development Investment
Accounting Policies [Line Items]
Number of Acquisitions | Property	4
Economic Ownership		95.00%
Ownership percentage by noncontrolling owners		5.00%
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net	$ 4,584,000	$ 4,674,000
Gramercy Europe Asset | Canada
Accounting Policies [Line Items]
Number of properties | Property			2
Retained CDO Bonds
Accounting Policies [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net	5,527,000	5,800,000
Gramercy Europe Limited
Accounting Policies [Line Items]
Goodwill	3,272,000	$ 3,394,000		$ 3,802,000
Building
Accounting Policies [Line Items]
Property, plant and equipment, useful life		40 years
Building Equipment and Fixtures | Minimum
Accounting Policies [Line Items]
Property, plant and equipment, useful life		5 years
Building Equipment and Fixtures | Maximum
Accounting Policies [Line Items]
Property, plant and equipment, useful life		10 years
ASU 2016-18
Accounting Policies [Line Items]
Net Cash Provided by (Used in) Operating Activities			$ 235,000
Net Cash Provided by (Used in) Investing Activities			(947,000)
Net Cash Provided by (Used in) Financing Activities			$ 909,000
ASU 2014-09
Accounting Policies [Line Items]
Retained Earnings (Accumulated Deficit)	663,000
Construction Loans
Accounting Policies [Line Items]
Loans and Leases Receivable, Maximum Borrowing Capacity		$ 250,000,000
Loans and Leases Receivable, Net Amount	$ 22,154,000	$ 22,437,000
Loans Receivable, Basis Spread on Variable Rate, During Period		10.47%

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Real Estate Investments (Summary of Dispositions) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) ft² Property	Mar. 31, 2017 USD ($) ft² Property
Real Estate [Abstract]
Number of properties | Property	5	7
Rentable square feet | ft²	1,546,091	487,872
Gross proceeds	$ 111,012	$ 51,683
Impairment of real estate investments related to asset dispositions during the period	0	0
Net gain on disposals	16,255	17,377
Impairment of real estate investments	$ 0	$ (12,771)

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Significant Accounting Policies (Components of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and cash equivalents	$ 41,964	$ 30,231	$ 56,256
Restricted cash	15,041	12,723	13,101
Total cash, cash equivalents, and restricted cash	$ 57,005	$ 42,954	$ 69,357	$ 80,433

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Real Estate Investments (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) ft² Property	Mar. 31, 2017 USD ($) ft² Property
Real Estate [Line Items]
Amortization of Intangible Assets	$ 26,159	$ 24,172
Real estate acquisitions	10,197
Intangible assets acquisitions	$ 635
Number of properties | Property	5	7
Rentable square feet | ft²	1,546,091	487,872
Net gain on disposals	$ 16,255	$ 17,377
Impairment of real estate investments	$ 0	(12,771)
Number of Acquisitions | Property	1
Amortization of market lease intangible assets and liabilities	$ 494	$ 621
Assets Held-for-sale
Real Estate [Line Items]
Number of properties held-for-sale | Property	1
Net asset value	$ 402

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Significant Accounting Policies (Schedule of Retained Collateralized Debt Obligation Bonds) (Details) - Available-for-sale Securities $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) security	Mar. 31, 2017 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Number of Securities | security	6
Face Value	$ 329,597
Amortized Cost	5,431
Gross Unrealized Gain	369
Other-than-temporary impairment	0	$ (4,890)
Fair Value	$ 5,800
Weighted Average Expected Life	1 year 1 month 6 days

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Real Estate Investments (Summary of Intangibles) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Intangible assets:
Total intangible assets	$ 563,213	$ 598,559
Finite-lived intangible assets, accumulated amortization	241,939	220,473
Intangible liabilities:
Total intangible liabilities	$ 159,544	166,491
In-place leases
Real Estate [Line Items]
Weighted average amortization period (years)	9 years 3 months 19 days
Intangible assets:
Total intangible assets	$ 513,423	545,782
Finite-lived intangible assets, accumulated amortization	$ 214,664	194,836
Above-market leases
Real Estate [Line Items]
Weighted average amortization period (years)	6 years 9 months 18 days
Intangible assets:
Total intangible assets	$ 43,979	46,713
Finite-lived intangible assets, accumulated amortization	$ 26,854	25,229
Below-market ground rent
Real Estate [Line Items]
Weighted average amortization period (years)	17 years 6 months
Intangible assets:
Total intangible assets	$ 5,811	6,064
Finite-lived intangible assets, accumulated amortization	$ 421	408
Below-market leases
Real Estate [Line Items]
Weighted average amortization period (years)	39 years 6 months
Intangible liabilities:
Total intangible liabilities	$ 152,758	159,652
Finite-lived intangible liabilities, accumulated amortization	$ 30,685	28,516
Above-market ground rent
Real Estate [Line Items]
Weighted average amortization period (years)	32 years
Intangible liabilities:
Total intangible liabilities	$ 6,786	6,839
Finite-lived intangible liabilities, accumulated amortization	516	462
Assets Held-for-sale
Intangible assets:
Finite-lived intangible assets, accumulated amortization	0	0
Intangible liabilities:
Finite-lived intangible liabilities, accumulated amortization	$ 0	$ 0

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Real Estate Investments (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Depreciation and amortization expense
April 1 to December 31, 2018	$ 70,211
2019	84,228
2020	70,822
2021	59,528
2022	46,652
Rental revenue increase
April 1 to December 31, 2018	(1,571)
2019	(2,520)
2020	(4,004)
2021	(4,168)
2022	$ (6,260)

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Unconsolidated Equity Investments (Narrative) (Details) € in Thousands, $ in Thousands		1 Months Ended	3 Months Ended			12 Months Ended
	Jun. 30, 2016	Nov. 30, 2017 USD ($) Property	Mar. 31, 2018 USD ($) Property	Mar. 31, 2018 EUR (€) Property	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) Property	Mar. 31, 2018 EUR (€) Property	Oct. 31, 2017 USD ($)	Oct. 31, 2017 EUR (€)	Jul. 31, 2017
Investments in and Advances to Affiliates [Line Items]
Number of properties | Property			367			371	367
Investment in unconsolidated equity investment			$ 99,113			$ 70,214
Contributions to unconsolidated equity investments			28,731
Distributions received from unconsolidated equity investments			$ 0		$ 352
Number of Acquisitions | Property			1	1
Gramercy European Property Fund
Investments in and Advances to Affiliates [Line Items]
Ownership %						14.20%
Goodman Europe JV
Investments in and Advances to Affiliates [Line Items]
Ownership %						5.10%				5.10%
Strategic Office Partners
Investments in and Advances to Affiliates [Line Items]
Distributions received from unconsolidated equity investments			$ 2,710
Commitment amount			400,000
Strategic Office Partners | Parent Company
Investments in and Advances to Affiliates [Line Items]
Commitment amount			100,000
E-Commerce JV
Investments in and Advances to Affiliates [Line Items]
Contributions to unconsolidated equity investments			30,206
Commitment amount			110,000
Number of Acquisitions | Property		6				6
Partnership unit contributions to investment		$ 80,000	25,141
Cash contributions to equity method investment		$ 30,000	1,130
Duke JV
Investments in and Advances to Affiliates [Line Items]
Ownership interest transferred	100.00%
Gramercy European Property Fund III
Investments in and Advances to Affiliates [Line Items]
Aggregate cost								$ 323,359	€ 262,622
Payments to investments			2,460	€ 1,977
Gramercy European Property Fund III | Parent Company
Investments in and Advances to Affiliates [Line Items]
Aggregate cost			$ 64,257				€ 52,187
Gramercy European Property Fund | Goodman Europe JV
Investments in and Advances to Affiliates [Line Items]
Ownership %						94.90%

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Unconsolidated Equity Investments (Summary of Unconsolidated Equity Investments) (Details) $ in Thousands	Mar. 31, 2018 USD ($) Property	Dec. 31, 2017 USD ($) Property	Jul. 31, 2017
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated equity investment	$ 99,113	$ 70,214
Number of properties | Property	367	371
E-Commerce JV
Schedule of Equity Method Investments [Line Items]
Basis difference	$ (3,916)
Gramercy European Property Fund
Schedule of Equity Method Investments [Line Items]
Ownership %		14.20%
Goodman Europe JV
Schedule of Equity Method Investments [Line Items]
Ownership %		5.10%	5.10%
Goodman Europe JV | Gramercy European Property Fund
Schedule of Equity Method Investments [Line Items]
Ownership %		94.90%
Goodman UK JV
Schedule of Equity Method Investments [Line Items]
Basis difference	2,011	$ 1,943
Unconsolidated Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated equity investment	$ 99,113	$ 70,214
Number of properties | Property	21	17
Unconsolidated Equity Method Investments | E-Commerce JV
Schedule of Equity Method Investments [Line Items]
Ownership %	51.00%
Voting Interest %	50.00%
Investment in unconsolidated equity investment	$ 43,502	$ 17,798
Number of properties | Property	2	0
Unconsolidated Equity Method Investments | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Ownership %	25.00%
Voting Interest %	25.00%
Investment in unconsolidated equity investment	$ 28,792	$ 28,243
Number of properties | Property	13	13
Unconsolidated Equity Method Investments | Goodman UK JV
Schedule of Equity Method Investments [Line Items]
Ownership %	80.00%
Voting Interest %	50.00%
Investment in unconsolidated equity investment	$ 15,980	$ 15,768
Number of properties | Property	1	1
Unconsolidated Equity Method Investments | Gramercy European Property Fund III
Schedule of Equity Method Investments [Line Items]
Ownership %	19.90%
Voting Interest %	50.00%
Investment in unconsolidated equity investment	$ 5,363	$ 2,949
Number of properties | Property	2	0
Unconsolidated Equity Method Investments | Other
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated equity investment	$ 5,476	$ 5,456
Number of properties | Property	3	3
Minimum | Unconsolidated Equity Method Investments | Other
Schedule of Equity Method Investments [Line Items]
Ownership %	5.10%
Voting Interest %	5.10%
Maximum | Unconsolidated Equity Method Investments | Other
Schedule of Equity Method Investments [Line Items]
Ownership %	50.00%
Voting Interest %	50.00%

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Unconsolidated Equity Investments (Rollforward of Unconsolidated Equity Investments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Beginning balance	$ 70,214
Contributions to unconsolidated equity investments	28,731
Equity in net loss of unconsolidated equity investments, including adjustments for basis differences	(926)	$ (94)
Other comprehensive income of unconsolidated equity investments	431
Cumulative effect of accounting change	663
Ending Balance	$ 99,113

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Unconsolidated Equity Investments (Combined Balance Sheets for the Company's Joint Ventures) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Jul. 31, 2017
Gramercy European Property Fund
Liabilities and members' equity:
Ownership %		14.20%
Goodman Europe JV
Liabilities and members' equity:
Ownership %		5.10%	5.10%
Goodman Europe JV | Gramercy European Property Fund
Liabilities and members' equity:
Ownership %		94.90%
Corporate Joint Venture | E-Commerce JV
Assets:
Real estate assets, net	$ 149,895	$ 0
Other assets	48,894	35,727
Total assets	198,789	35,727
Liabilities and members' equity:
Mortgage notes payable	108,473	0
Other liabilities	5,018	830
Total liabilities	113,491	830
Company's equity	43,502	17,798
Other members' equity	41,796	17,099
Liabilities and members' equity	198,789	35,727
Corporate Joint Venture | Gramercy European Property Fund
Assets:
Real estate assets, net	62,284
Other assets	5,428
Total assets	67,712
Liabilities and members' equity:
Mortgage notes payable	35,873
Other liabilities	4,850
Total liabilities	40,723
Company's equity	5,363
Other members' equity	21,626
Liabilities and members' equity	67,712
Corporate Joint Venture | Strategic Office Partners
Assets:
Real estate assets, net	264,099	265,014
Other assets	80,897	78,243
Total assets	344,996	343,257
Liabilities and members' equity:
Mortgage notes payable	213,699	213,205
Other liabilities	16,698	15,002
Total liabilities	230,397	228,207
Company's equity	28,792	28,243
Other members' equity	85,807	86,807
Liabilities and members' equity	344,996	343,257
Corporate Joint Venture | Goodman UK JV
Assets:
Real estate assets, net	19,150	18,633
Other assets	1,751	1,473
Total assets	20,901	20,106
Liabilities and members' equity:
Mortgage notes payable	0	0
Other liabilities	732	203
Total liabilities	732	203
Company's equity	15,980	15,768
Other members' equity	4,189	4,135
Liabilities and members' equity	20,901	20,106
Corporate Joint Venture | Other
Assets:
Real estate assets, net	108,993	107,949
Other assets	18,421	34,022
Total assets	127,414	141,971
Liabilities and members' equity:
Mortgage notes payable	38,341	38,662
Other liabilities	19,043	19,329
Total liabilities	57,384	57,991
Company's equity	5,476	8,405
Other members' equity	64,554	75,575
Liabilities and members' equity	$ 127,414	$ 141,971

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Unconsolidated Equity Investments (Real Estate Assets Subject to Mortgages) (Details) $ in Thousands	Mar. 31, 2018 USD ($) Property	Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items]
Percentage of face amount of debt presented	100.00%
Wholly Owned Properties | Strategic Office Partners Portfolio Facility One | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Economic Ownership	25.00%
Number of real estate properties pledged under debt | Property	10
Wholly Owned Properties | Strategic Office Partners Portfolio Facility Two | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Economic Ownership	25.00%
Wholly Owned Properties | E-Commerce JV Portfolio Facility | E-Commerce JV
Schedule of Equity Method Investments [Line Items]
Economic Ownership	51.00%
Wholly Owned Properties | Gramercy European Property Fund III Facility | Gramercy European Property Fund III
Schedule of Equity Method Investments [Line Items]
Economic Ownership	19.90%
Number of real estate properties pledged under debt | Property	2
Wholly Owned Properties | Henderson, NV | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Economic Ownership	25.00%
Wholly Owned Properties | Somerset, NJ | Philips JV
Schedule of Equity Method Investments [Line Items]
Economic Ownership	25.00%
Mortgages
Schedule of Equity Method Investments [Line Items]
Total mortgage notes payable, net	$ 550,953
Mortgages | Wholly Owned Properties
Schedule of Equity Method Investments [Line Items]
Outstanding Balance	401,784	$ 256,218
Net deferred financing costs and net debt discount	(5,398)	(4,351)
Total mortgage notes payable, net	$ 396,386	251,867
Mortgages | Wholly Owned Properties | Strategic Office Partners Portfolio Facility One | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Interest Rate	4.70%
Outstanding Balance	$ 169,380	169,380
Mortgages | Wholly Owned Properties | Strategic Office Partners Portfolio Facility Two | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Interest Rate	9.21%
Outstanding Balance	$ 39,540	39,540
Mortgages | Wholly Owned Properties | E-Commerce JV Portfolio Facility | E-Commerce JV
Schedule of Equity Method Investments [Line Items]
Interest Rate	3.38%
Outstanding Balance	$ 109,846	0
Mortgages | Wholly Owned Properties | Gramercy European Property Fund III Facility | Gramercy European Property Fund III
Schedule of Equity Method Investments [Line Items]
Interest Rate	1.57%
Outstanding Balance	$ 36,084	0
Mortgages | Wholly Owned Properties | Henderson, NV | Strategic Office Partners
Schedule of Equity Method Investments [Line Items]
Interest Rate	4.75%
Outstanding Balance	$ 8,593	8,636
Mortgages | Wholly Owned Properties | Somerset, NJ | Philips JV
Schedule of Equity Method Investments [Line Items]
Interest Rate	6.90%
Outstanding Balance	$ 38,341	$ 38,662

XML

Unconsolidated Equity Investments (Combined Income Statement for the Company's Joint Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Investments in and Advances to Affiliates [Line Items]
Company’s equity in net income (loss) within continuing operations	$ (926)	$ (94)
Distributions received from unconsolidated equity investments	0	352
Gramercy European Property Fund
Investments in and Advances to Affiliates [Line Items]
Ownership %			14.20%
Strategic Office Partners
Investments in and Advances to Affiliates [Line Items]
Distributions received from unconsolidated equity investments	2,710
Corporate Joint Venture | Gramercy European Property Fund
Investments in and Advances to Affiliates [Line Items]
Revenues	482	15,073
Operating expenses	682	3,873
Interest expense	97	2,146
Depreciation and amortization	209	6,494
Total expenses	988	12,513
Net income (loss) from operations	(506)	2,560
Gain (loss) on derivatives	0	1,221
Provision for taxes		129
Net income (loss)	(506)	3,910
Company's share in net income (loss)	(93)	513
Adjustments for REIT basis	0	(36)
Corporate Joint Venture | Gramercy European Property Fund | Continuing Operations
Investments in and Advances to Affiliates [Line Items]
Company’s equity in net income (loss) within continuing operations	(93)	477
Corporate Joint Venture | Strategic Office Partners
Investments in and Advances to Affiliates [Line Items]
Revenues	11,143	5,526
Operating expenses	4,151	1,474
Interest expense	3,113	1,510
Depreciation and amortization	4,823	2,503
Total expenses	12,087	5,487
Net income (loss) from operations	(944)	39
Gain (loss) on derivatives	492	(349)
Provision for taxes		0
Net income (loss)	(452)	(310)
Company's share in net income (loss)	26	(15)
Adjustments for REIT basis	0	0
Equity Method Investment, Summarized Financial Information, Gain (Loss) on Extinguishment of Debt	0
Corporate Joint Venture | Strategic Office Partners | Continuing Operations
Investments in and Advances to Affiliates [Line Items]
Company’s equity in net income (loss) within continuing operations	26	(15)
Corporate Joint Venture | Goodman UK JV
Investments in and Advances to Affiliates [Line Items]
Revenues	0	295
Operating expenses	260	302
Interest expense	0	0
Depreciation and amortization	206	375
Total expenses	466	677
Net income (loss) from operations	(466)	(382)
Gain (loss) on derivatives	0	0
Provision for taxes		(8)
Net income (loss)	(466)	(390)
Company's share in net income (loss)	(373)	(312)
Adjustments for REIT basis	(4)	(89)
Equity Method Investment, Summarized Financial Information, Gain (Loss) on Extinguishment of Debt	0
Corporate Joint Venture | Goodman UK JV | Continuing Operations
Investments in and Advances to Affiliates [Line Items]
Company’s equity in net income (loss) within continuing operations	(377)	(401)
Corporate Joint Venture | Other
Investments in and Advances to Affiliates [Line Items]
Revenues	1,994	(1,331)
Operating expenses	106	576
Interest expense	666	641
Depreciation and amortization	333	333
Total expenses	1,105	1,550
Net income (loss) from operations	889	(2,881)
Gain (loss) on derivatives	0	0
Provision for taxes		0
Net income (loss)	889	(2,881)
Company's share in net income (loss)	20	(155)
Adjustments for REIT basis	0	0
Equity Method Investment, Summarized Financial Information, Gain (Loss) on Extinguishment of Debt	0
Corporate Joint Venture | Other | Continuing Operations
Investments in and Advances to Affiliates [Line Items]
Company’s equity in net income (loss) within continuing operations	20	$ (155)
Corporate Joint Venture | E-Commerce JV
Investments in and Advances to Affiliates [Line Items]
Revenues	2,165
Operating expenses	583
Interest expense	669
Depreciation and amortization	862
Total expenses	2,114
Net income (loss) from operations	51
Gain (loss) on derivatives	0
Net income (loss)	(1,149)
Company's share in net income (loss)	(520)
Adjustments for REIT basis	18
Equity Method Investment, Summarized Financial Information, Gain (Loss) on Extinguishment of Debt	(1,200)
Corporate Joint Venture | E-Commerce JV | Continuing Operations
Investments in and Advances to Affiliates [Line Items]
Company’s equity in net income (loss) within continuing operations	$ (502)

XML

Debt Obligations (Secured Debt) (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Property	Mar. 31, 2017 USD ($) Property	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Number of Acquisitions	1
Number of real estate properties in which secured debt repaid		2
Loss on extinguishment of debt | $	$ 0	$ (208)
Mortgages
Debt Instrument [Line Items]
Mortgages transferred		2
Real estate acquisitions | Mortgages
Debt Instrument [Line Items]
Non-recourse debt | $			$ 181,107
Number of Acquisitions		7

XML

Debt Obligations (Schedule of Mortgage Notes Payable) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 Property	Mar. 31, 2018 USD ($) Property	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Number of real estate properties in which secured debt repaid | Property	2
Mortgage Notes Payable
Debt Instrument [Line Items]
Outstanding Balance		$ 550,953	$ 554,498
Net deferred financing costs and net debt discount		8,520	9,023
Total mortgage notes payable, net		$ 559,473	563,521
Mortgage Notes Payable | Greenwood, IN
Debt Instrument [Line Items]
Interest Rate		3.59%
Outstanding Balance		$ 7,211	7,257
Mortgage Notes Payable | Greenfield, IN
Debt Instrument [Line Items]
Interest Rate		3.63%
Outstanding Balance		$ 5,828	5,865
Mortgage Notes Payable | Logistics Portfolio - Pool 3
Debt Instrument [Line Items]
Interest Rate		3.96%
Outstanding Balance		$ 43,302	43,302
Number of real estate properties pledged under debt | Property		2
Mortgage Notes Payable | Philadelphia, PA
Debt Instrument [Line Items]
Interest Rate		4.99%
Outstanding Balance		$ 11,842	11,943
Mortgage Notes Payable | Bridgeview, IL
Debt Instrument [Line Items]
Interest Rate		3.90%
Outstanding Balance		$ 5,792	5,838
Mortgage Notes Payable | Spartanburg, SC
Debt Instrument [Line Items]
Interest Rate		3.20%
Outstanding Balance		$ 530	632
Mortgage Notes Payable | Charleston, SC
Debt Instrument [Line Items]
Interest Rate		3.11%
Outstanding Balance		$ 320	457
Mortgage Notes Payable | Lawrence, IN
Debt Instrument [Line Items]
Interest Rate		5.02%
Outstanding Balance		$ 19,896	20,061
Mortgage Notes Payable | Charlotte, NC
Debt Instrument [Line Items]
Interest Rate		3.28%
Outstanding Balance		$ 1,363	1,538
Mortgage Notes Payable | Hawthorne, CA
Debt Instrument [Line Items]
Interest Rate		3.52%
Outstanding Balance		$ 17,042	17,207
Mortgage Notes Payable | Charleston, SC
Debt Instrument [Line Items]
Interest Rate		3.32%
Outstanding Balance		$ 696	758
Mortgage Notes Payable | Charleston, SC
Debt Instrument [Line Items]
Interest Rate		2.97%
Outstanding Balance		$ 684	746
Mortgage Notes Payable | Charleston, SC
Debt Instrument [Line Items]
Interest Rate		3.37%
Outstanding Balance		$ 684	746
Mortgage Notes Payable | Charlotte, NC
Debt Instrument [Line Items]
Interest Rate		3.38%
Outstanding Balance		$ 594	647
Mortgage Notes Payable | Des Plaines, IL
Debt Instrument [Line Items]
Interest Rate		5.54%
Outstanding Balance		$ 2,365	2,385
Mortgage Notes Payable | Waco, TX
Debt Instrument [Line Items]
Interest Rate		4.75%
Outstanding Balance		$ 14,815	14,890
Mortgage Notes Payable | Deerfield, IL
Debt Instrument [Line Items]
Interest Rate		3.71%
Outstanding Balance		$ 10,355	10,447
Mortgage Notes Payable | Winston-Salem, NC
Debt Instrument [Line Items]
Interest Rate		3.41%
Outstanding Balance		$ 3,135	3,354
Mortgage Notes Payable | Winston-Salem, NC
Debt Instrument [Line Items]
Interest Rate		3.42%
Outstanding Balance		$ 1,043	1,114
Mortgage Notes Payable | Logistics Portfolio - Pool 1
Debt Instrument [Line Items]
Interest Rate		4.27%
Outstanding Balance		$ 37,856	38,107
Number of real estate properties pledged under debt | Property		3
Mortgage Notes Payable | CCC Portfolio
Debt Instrument [Line Items]
Interest Rate		4.24%
Outstanding Balance		$ 22,691	22,814
Number of real estate properties pledged under debt | Property		5
Mortgage Notes Payable | Logistics Portfolio - Pool 4
Debt Instrument [Line Items]
Interest Rate		4.36%
Outstanding Balance		$ 79,500	79,500
Number of real estate properties pledged under debt | Property		6
Mortgage Notes Payable | Romeoville, IL
Debt Instrument [Line Items]
Interest Rate		3.80%
Outstanding Balance		$ 24,835	24,951
Mortgage Notes Payable | Romeoville, IL3
Debt Instrument [Line Items]
Interest Rate		9.37%
Outstanding Balance		$ 6,613	6,623
Mortgage Notes Payable | KIK USA Portfolio
Debt Instrument [Line Items]
Interest Rate		4.31%
Outstanding Balance		$ 7,077	7,154
Number of real estate properties pledged under debt | Property		3
Mortgage Notes Payable | Yuma, AZ
Debt Instrument [Line Items]
Interest Rate		5.27%
Outstanding Balance		$ 11,804	11,858
Mortgage Notes Payable | Allentown, PA
Debt Instrument [Line Items]
Interest Rate		5.16%
Outstanding Balance		$ 22,586	22,690
Mortgage Notes Payable | Spartanburg, SC
Debt Instrument [Line Items]
Interest Rate		3.72%
Outstanding Balance		$ 5,447	5,635
Mortgage Notes Payable | Natick, MA
Debt Instrument [Line Items]
Interest Rate		5.21%
Outstanding Balance		$ 31,121	31,224
Mortgage Notes Payable | Natick, MA3
Debt Instrument [Line Items]
Interest Rate		10.38%
Outstanding Balance		$ 3,458	3,469
Mortgage Notes Payable | Maple Grove, MN
Debt Instrument [Line Items]
Interest Rate		3.88%
Outstanding Balance		$ 16,291	16,380
Mortgage Notes Payable | Curtis Bay, MD
Debt Instrument [Line Items]
Interest Rate		4.31%
Outstanding Balance		$ 13,500	13,500
Mortgage Notes Payable | Rialto, CA
Debt Instrument [Line Items]
Interest Rate		3.91%
Outstanding Balance		$ 54,543	54,741
Mortgage Notes Payable | Houston, TX
Debt Instrument [Line Items]
Interest Rate		3.68%
Outstanding Balance		$ 26,000	26,000
Mortgage Notes Payable | Durham, NC
Debt Instrument [Line Items]
Interest Rate		4.02%
Outstanding Balance		$ 3,614	3,631
Mortgage Notes Payable | Charleston, SC
Debt Instrument [Line Items]
Interest Rate		3.80%
Outstanding Balance		$ 5,831	6,001
Mortgage Notes Payable | Hackettstown, NJ
Debt Instrument [Line Items]
Interest Rate		5.49%
Outstanding Balance		$ 9,420	9,455
Mortgage Notes Payable | Hutchins, TX
Debt Instrument [Line Items]
Interest Rate		5.41%
Outstanding Balance		$ 21,269	$ 21,578

XML

Debt Obligations (Unsecured Debt) (Narrative) (Details)	3 Months Ended
	Mar. 31, 2018 extension	Dec. 31, 2017 USD ($)	Oct. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Unsecured Debt | 2015 Revolving Credit Facility - U.S. Dollar Tranche
Debt Instrument [Line Items]
Interest Rate	2.89%
Unsecured Debt | 2015 Revolving Credit Facility - Multicurrency Tranche
Debt Instrument [Line Items]
Interest Rate	1.32%
Unsecured Debt | 3-Year Term Loan
Debt Instrument [Line Items]
Interest Rate	2.91%
Unsecured Debt | 7-Year Term Loan
Debt Instrument [Line Items]
Interest Rate	2.76%
Unsecured Debt | Senior Unsecured Notes
Debt Instrument [Line Items]
Face amount		$ 500,000,000
JPMorgan Chase Bank | 2015 Revolving Credit Facility - U.S. Dollar Tranche
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 1,900,000,000
Line of credit facility, number of extensions | extension	2
JPMorgan Chase Bank | Term Loans | 3-Year Term Loan
Debt Instrument [Line Items]
Face amount				300,000,000
JPMorgan Chase Bank | Term Loans | JPM Term Loan | Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.50%
JPMorgan Chase Bank | Term Loans | JPM Term Loan | LIBOR 30-Day
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%
JPMorgan Chase Bank | Revolving Credit Facility | Line of Credit | Unsecured Credit Facility
Debt Instrument [Line Items]
Face amount				850,000,000
JPMorgan Chase Bank | Revolving Credit Facility | Line of Credit | 2015 Revolving Credit Facility - US Dollars Tranche
Debt Instrument [Line Items]
Face amount				750,000,000
JPMorgan Chase Bank | Revolving Credit Facility | Line of Credit | 2015 Revolving Credit Facility - Multicurrency Tranche
Debt Instrument [Line Items]
Face amount				100,000,000
JPMorgan Chase Bank | Revolving Credit Facility | Term Loans | Unsecured Credit Facility
Debt Instrument [Line Items]
Face amount				1,050,000,000
Capital One | Term Loans | 7-Year Term Loan
Debt Instrument [Line Items]
Face amount			$ 400,000	$ 175,000,000
Minimum | Unsecured Debt | Senior Unsecured Notes
Debt Instrument [Line Items]
Interest Rate		3.89%
Minimum | JPMorgan Chase Bank | Term Loans | JPM Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.90%
Minimum | JPMorgan Chase Bank | Term Loans | JPM Term Loan | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.00%
Minimum | JPMorgan Chase Bank | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	0.125%
Minimum | JPMorgan Chase Bank | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.875%
Minimum | JPMorgan Chase Bank | Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.00%
Maximum | Unsecured Debt | Senior Unsecured Notes
Debt Instrument [Line Items]
Interest Rate		4.97%
Maximum | JPMorgan Chase Bank | Term Loans | JPM Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
Maximum | JPMorgan Chase Bank | Term Loans | JPM Term Loan | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.75%
Maximum | JPMorgan Chase Bank | Revolving Credit Facility
Debt Instrument [Line Items]
Commitment fee percentage	0.30%
Maximum | JPMorgan Chase Bank | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.55%
Maximum | JPMorgan Chase Bank | Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.55%

XML

Debt Obligations (Exchangeable Senior Notes) (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2017	Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ 0	$ 208
Convertible Debt | Exchangeable Senior Notes 3.75%
Debt Instrument [Line Items]
Face amount	$ 115,000
Interest Rate	3.75%
Percent of instrument converted	100.00%
Shares issued in conversion (in shares)	5,258,420
Adjustment to APIC related to extinguishment of exchangeable notes		$ (42,065)

XML

Debt Obligations (Schedule of Credit Facilities and Term Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
2015 Revolving Credit Facility - U.S. Dollar Tranche
Line of Credit Facility [Line Items]
Long-term Debt	$ 292,543
Unsecured Debt
Line of Credit Facility [Line Items]
Outstanding Balance	2,242,543	$ 2,307,162
Unamortized discount and deferred financing costs	(4,872)	(5,063)
Long-term Debt	$ 2,237,671	2,302,099
Unsecured Debt | 2015 Revolving Credit Facility - U.S. Dollar Tranche
Line of Credit Facility [Line Items]
Stated Interest Rate	2.89%
Effective Interest Rate	2.89%
Outstanding Balance	$ 275,000	345,000
Unsecured Debt | 2015 Revolving Credit Facility - Multicurrency Tranche
Line of Credit Facility [Line Items]
Stated Interest Rate	1.32%
Effective Interest Rate	1.32%
Outstanding Balance	$ 17,543	12,162
Unsecured Debt | 3-Year Term Loan
Line of Credit Facility [Line Items]
Stated Interest Rate	2.91%
Effective Interest Rate	2.33%
Outstanding Balance	$ 300,000	300,000
Unsecured Debt | 5-Year Term Loan
Line of Credit Facility [Line Items]
Stated Interest Rate	2.91%
Effective Interest Rate	2.70%
Outstanding Balance	$ 750,000	750,000
Unsecured Debt | 7-Year Term Loan
Line of Credit Facility [Line Items]
Stated Interest Rate	2.76%
Effective Interest Rate	3.00%
Outstanding Balance	$ 400,000	400,000
Unsecured Debt | 2015 Senior Notes Due 2024
Line of Credit Facility [Line Items]
Stated Interest Rate	4.97%
Effective Interest Rate	5.07%
Outstanding Balance	$ 150,000	150,000
Unsecured Debt | 2016 Senior Notes Due 2022
Line of Credit Facility [Line Items]
Stated Interest Rate	3.89%
Effective Interest Rate	4.00%
Outstanding Balance	$ 150,000	150,000
Unsecured Debt | 2016 Senior Notes Due 2025
Line of Credit Facility [Line Items]
Stated Interest Rate	4.26%
Effective Interest Rate	4.38%
Outstanding Balance	$ 100,000	100,000
Unsecured Debt | 2016 Senior Notes Due 2026
Line of Credit Facility [Line Items]
Stated Interest Rate	4.32%
Effective Interest Rate	4.43%
Outstanding Balance	$ 100,000	$ 100,000

XML

Debt Obligations (Schedule of Maturities of Long-term Debt) (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
Above market interest	$ 3,648
Long-term Debt, Interest Payments, Fiscal Year Maturity [Abstract]
April1 to December 31, 2018, interest	82,144
2019, interest	97,025
2020, interest	87,135
2021, interest	57,199
2022, interest	53,364
Thereafter, interest	64,772
Interest payments, total	445,287
Long-term Debt and Interest, Fiscal Year Maturity [Abstract]
April 1 to December 31, 2018, total	148,743
2019, total	427,475
2020, total	442,512
2021, total	826,455
2022, total	345,293
Thereafter, total	1,044,657
Net premium, total	3,238,783
2015 Revolving Credit Facility
Long-term Debt, Fiscal Year Maturity [Abstract]
April 1 to December 31, 2018	0
2019	0
2020	292,543
2021	0
2022	0
Thereafter	0
Above market interest	0
Long-term Debt	292,543
Senior Unsecured Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
April 1 to December 31, 2018	0
2019	0
2020	0
2021	0
2022	150,000
Thereafter	350,000
Above market interest	0
Long-term Debt	500,000
Term Loans
Long-term Debt, Fiscal Year Maturity [Abstract]
April 1 to December 31, 2018	0
2019	300,000
2020	0
2021	750,000
2022	0
Thereafter	400,000
Above market interest	0
Long-term Debt	1,450,000
Mortgage Notes Payable
Long-term Debt, Fiscal Year Maturity [Abstract]
April 1 to December 31, 2018	66,599
2019	30,450
2020	62,834
2021	19,256
2022	141,929
Thereafter	229,885
Above market interest	0
Long-term Debt	$ 550,953

XML

Transactions with Trustee Related Entities and Related Parties (Narrative) (Details) € in Thousands, $ in Thousands	Mar. 31, 2018 USD ($) director	Mar. 31, 2018 EUR (€) director	Dec. 31, 2017 USD ($)
Related Party Transaction [Line Items]
Investments in joint ventures | $	$ 99,113		$ 70,214
Chief Executive Officer | Gramercy Europe
Related Party Transaction [Line Items]
Investments in joint ventures	1,388	€ 1,250
Managing Directors | Gramercy Europe
Related Party Transaction [Line Items]
Investments in joint ventures	$ 1,388	€ 1,250
Gramercy Europe Asset
Related Party Transaction [Line Items]
Number of managing directors | director	2	2

XML

Fair Value Measurements (Narrative) (Details) $ in Thousands	Mar. 31, 2018 USD ($) Property	Dec. 31, 2017 USD ($) Property
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Properties impaired | Property	0	7
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset value	$ 50,557	$ 116,011
Real estate investments | Fair Value | Marketable securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset value		$ 87,996

XML

Fair Value Measurements (Schedule of Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Retained CDO Bonds
Financial assets:
Investments	$ 5,800
Carrying Value
Financial assets:
Loan investments	22,437	$ 22,154
Long-term debt:
2015 Revolving Credit Facility	292,543	357,162
Mortgage notes payable	559,473	563,521
Carrying Value | 3-Year Term Loan
Long-term debt:
Term loans	300,000	300,000
Carrying Value | 5-Year Term Loan
Long-term debt:
Term loans	750,000	750,000
Carrying Value | 7-Year Term Loan
Long-term debt:
Term loans	398,241	398,152
Carrying Value | Senior Unsecured Notes
Long-term debt:
Senior notes	496,887	496,785
Carrying Value | Interest rate swaps
Financial assets:
Interest rate swaps	41,888	19,668
Financial liabilities:
Interest rate swaps	13	173
Carrying Value | Retained CDO Bonds
Financial assets:
Investments	5,800	5,527
Carrying Value | Investment in CBRE Strategic Partners Asia
Financial assets:
Investments	2,869	2,820
Carrying Value | Real estate investments
Financial assets:
Investments	0	87,996
Fair Value
Financial assets:
Loan investments	20,990	21,362
Long-term debt:
2015 Revolving Credit Facility	292,492	357,369
Mortgage notes payable	565,329	573,826
Fair Value | 3-Year Term Loan
Long-term debt:
Term loans	300,090	300,091
Fair Value | 5-Year Term Loan
Long-term debt:
Term loans	750,653	750,678
Fair Value | 7-Year Term Loan
Long-term debt:
Term loans	400,020	400,010
Fair Value | Senior Unsecured Notes
Long-term debt:
Senior notes	502,349	513,229
Fair Value | Interest rate swaps
Financial assets:
Interest rate swaps	41,888	19,668
Financial liabilities:
Interest rate swaps	13	173
Fair Value | Retained CDO Bonds
Financial assets:
Investments	5,800	5,527
Fair Value | Investment in CBRE Strategic Partners Asia
Financial assets:
Investments	2,869	2,820
Fair Value | Real estate investments
Financial assets:
Investments	$ 0	$ 87,996

XML

Fair Value Measurements (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - Fair Value - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	$ 50,557	$ 116,011
Financial Liabilities:	(13)	(173)
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities:	(13)	(173)
Retained CDO Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	5,800	5,527
Marketable securities | Real estate investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:		87,996
Marketable securities | Investment in CBRE Strategic Partners Asia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	2,869	2,820
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	41,888	19,668
Level I
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Financial Liabilities:	0	0
Level I | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities:	0	0
Level I | Retained CDO Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Level I | Marketable securities | Real estate investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:		0
Level I | Marketable securities | Investment in CBRE Strategic Partners Asia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Level I | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Level II
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Financial Liabilities:	0	0
Level II | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities:	0	0
Level II | Retained CDO Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Level II | Marketable securities | Real estate investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:		0
Level II | Marketable securities | Investment in CBRE Strategic Partners Asia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Level II | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	0	0
Level III
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	50,557	116,011
Financial Liabilities:	(13)	(173)
Level III | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Liabilities:	(13)	(173)
Level III | Retained CDO Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	5,800	5,527
Level III | Marketable securities | Real estate investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:		87,996
Level III | Marketable securities | Investment in CBRE Strategic Partners Asia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	2,869	2,820
Level III | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets:	$ 41,888	$ 19,668

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Fair Value Measurements (Fair Value, Assets and Liabilities Measured on Recurring Basis, Valuation Techniques) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap liabilities fair value	$ 13	$ 173
CBRE Strategic Partners Asia
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value	$ 2,869
Discount rate	20.00%
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Fair Value	$ 41,875
Interest rate swaps | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap liabilities fair value	$ 13	173
Minimum | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	1.10%
Maximum | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	1.90%
Non-investment grade, subordinate CDO bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value	$ 5,800
Discount rate	19.00%
Non-investment grade, subordinate CDO bonds | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value	$ 5,800	$ 5,527

XML

Fair Value Measurements (Fair Value, Assets (Liabilities) Measured on Recurring Basis, Unobservable Input Reconciliation) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 27,842
Amortization of discounts or premiums	651
Adjustments to fair value:
Unrealized loss in other comprehensive income from fair value adjustment	(48)
Total gain on fair value adjustments	49
Ending balance	50,544
Adjustments To Fair Value, Assets (Liabilities) [Abstract]
Unrealized gain on derivatives	22,050
Interest rate swaps
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amortization of discounts or premiums	330
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	19,495
Adjustments To Fair Value, Assets (Liabilities) [Abstract]
Unrealized gain on derivatives	22,050
Ending balance	41,875
Investment in CBRE Strategic Partners Asia
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,820
Adjustments to fair value:
Total gain on fair value adjustments	49
Ending balance	2,869
Retained CDO Bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	5,527
Amortization of discounts or premiums	321
Adjustments to fair value:
Unrealized loss in other comprehensive income from fair value adjustment	(48)
Ending balance	$ 5,800

XML

Derivatives and Non-Derivative Hedging Instruments (Schedule of Derivative Instruments) (Details) - Not Designated as Hedging Instrument £ in Thousands, $ in Thousands	Mar. 31, 2018 USD ($)	Mar. 31, 2018 GBP (£)
Derivative [Line Items]
Fair Value	$ 41,875
Interest Rate Swap Strike Rate 4.55%
Derivative [Line Items]
Notional Value	$ 14,815
Strike Rate	4.55%	4.55%
Fair Value	$ (13)
Interest Rate Swap Strike Rate 1.22%
Derivative [Line Items]
Notional Value	$ 100,000
Strike Rate	1.22%	1.22%
Fair Value	$ 615
Interest Rate Swap Strike Rate 1.23%
Derivative [Line Items]
Notional Value	$ 100,000
Strike Rate	1.23%	1.23%
Fair Value	$ 612
Interest Rate Swap Strike Rate 1.24%
Derivative [Line Items]
Notional Value	$ 100,000
Strike Rate	1.24%	1.24%
Fair Value	$ 604
Interest Rate Swap Strike Rate 1.60%
Derivative [Line Items]
Notional Value	$ 750,000
Strike Rate	1.60%	1.60%
Fair Value	$ 17,010
Interest Rate Swap Strike Rate 1.82%
Derivative [Line Items]
Notional Value	$ 175,000
Strike Rate	1.82%	1.82%
Fair Value	$ 5,660
Interest Rate Swap Strike Rate 1.95%
Derivative [Line Items]
Notional Value	$ 60,000
Strike Rate	1.95%	1.95%
Fair Value	$ 1,599
Interest Rate Swap Strike Rate 2.01%
Derivative [Line Items]
Notional Value	$ 40,000
Strike Rate	2.01%	2.01%
Fair Value	$ 953
Interest Rate Swap Strike Rate 1.96%
Derivative [Line Items]
Notional Value	$ 39,500
Strike Rate	1.96%	1.96%
Fair Value	$ 1,016
Interest Rate Swap Strike Rate 1.96%
Derivative [Line Items]
Notional Value	$ 31,500
Strike Rate	1.96%	1.96%
Fair Value	$ 809
Interest Rate Swap Strike Rate 2.00%
Derivative [Line Items]
Notional Value	$ 31,500
Strike Rate	2.00%	2.00%
Fair Value	$ 765
Interest Rate Swap Strike Rate 1.95%
Derivative [Line Items]
Notional Value	$ 22,500
Strike Rate	1.95%	1.95%
Fair Value	$ 593
Forward Starting Swap
Derivative [Line Items]
Notional Value	$ 250,000
Strike Rate	2.23%	2.23%
Fair Value	$ 11,652
Net Investment Hedge in GBP-denominated investments
Derivative [Line Items]
Notional Value | £		£ 9,000
Fair Value	0
Net Investment Hedge in EUR-denominated investments
Derivative [Line Items]
Notional Value | £		£ 4,000
Fair Value	$ 0

XML

Derivatives and Non-Derivative Hedging Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Cumulative effect of accounting changes			$ 663
Interest expense	$ 25,492	$ 23,056
Interest rate swaps
Derivative [Line Items]
Derivative asset, fair value	41,888
Net liability of derivative	(13)
Amounts reclassified from OCI	(7,947)
Interest expense to be recognized	1,295
Remaining AOCI balance related to swap to be reclassified in the next twelve months	1,087
Net Investment Hedge in GBP-denominated Investments
Derivative [Line Items]
Net loss on hedge ineffectiveness	$ (459)	$ (923)
Accumulated Other Comprehensive Income (Loss)
Derivative [Line Items]
Cumulative effect of accounting changes			$ 103

XML

Derivatives and Non-Derivative Hedging Instruments (Gain Recognized On Interest Rate Swaps) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Gain reclassified from accumulated other comprehensive income (loss) into interest expense	$ 268	$ 268
Cumulative effect of accounting changes			$ 663
Interest Expense
Derivative [Line Items]
Gain recognized in accumulated other comprehensive income (loss)		0
Interest Expense | Interest rate swaps
Derivative [Line Items]
Gain recognized in accumulated other comprehensive income (loss)	22,153
Gain reclassified from accumulated other comprehensive income (loss) into interest expense	268	268
Gain recognized in interest expense (ineffective portion)	0	46
Total recognized in interest expense on statements of operations	$ 268	$ 314
Accounting Standards Update 2017-02
Derivative [Line Items]
Cumulative effect of accounting changes			$ 103

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Shareholders' Equity (Deficit) of the Company (ESPP, DRIP, Share Repurchase and ATM Equity Offering Program Narrative) (Details)	1 Months Ended				3 Months Ended
	Sep. 30, 2017 shares	Dec. 31, 2016	Jul. 31, 2016 USD ($)	Jun. 30, 2016 shares	Mar. 31, 2018 $ / shares shares	Mar. 31, 2017 $ / shares	Dec. 31, 2017 $ / shares shares
Class of Stock [Line Items]
Capital units, authorized (in shares)					500,000,000		500,000,000
Common stock, par value (in usd per share) | $ / shares					$ 0.01		$ 0.01
Capital stock, par value (in usd per share) | $ / shares							$ 0.01
Common stock, shares authorized (in shares)					490,000,000		490,000,000
Preferred stock, shares authorized (in shares)					10,000,000		10,000,000
Preferred stock, shares outstanding (in shares)					3,500,000
Dividends declared (in usd per share) | $ / shares						$ 0.375
Stock split conversion ratio		0.3333
ESPP shares authorized (in shares)					250,000
ESPP purchase discount percent					90.00%
ESPP shares held (in shares)					0
Shares registered for DRIP (in shares)				3,333,333
Dividend reinvestment program proceeds (in shares)					1,811
Shares available for issuance under DRIP (in shares)					3,323,962
At-the-market offering | $			$ 375,000,000
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)					3,500,000		3,500,000
Preferred stock, shares outstanding (in shares)					3,500,000		3,500,000
Preferred stock, shares issued (in shares)					3,500,000		3,500,000
Exchangeable Senior Notes 3.75% | Convertible Debt
Class of Stock [Line Items]
Shares issued in conversion (in shares)	5,258,420
Percent of instrument converted	100.00%
GPT Operating Partnership LP
Class of Stock [Line Items]
Partnership units (in units)					160,782,765

XML

Shareholders' Equity (Deficit) of the Company (Dividends Paid) (Details)	3 Months Ended
	Mar. 31, 2017 $ / shares
Equity [Abstract]
Dividends declared (in usd per share)	$ 0.375

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Shareholders' Equity (Deficit) of the Company (Preferred Stock) (Narrative) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	3,500,000
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares outstanding (in shares)	3,500,000	3,500,000
Preferred stock, redemption price per share (in usd per share)	$ 25
7.125% Series A Preferred Stock
Class of Stock [Line Items]
Dividend rate on preferred stock	7.125%
Preferred stock, dividend rate (in usd per share)	$ 1.78125

XML

Shareholders' Equity (Deficit) of the Company (Equity Plan Summaries and Earnings Per Share) (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Sep. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Outside Interests in Operating Partnership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive securities (in shares)		5,040,730	620,586
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted shares outstanding (in shares)		316,183		347,676
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)		2,634,080
Grants in period (in shares)		1,129,130
Shares vesting percentage		67.20%
2016 Equity Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 541	$ 817
Share based compensation expense, not yet recognized		$ 4,757
Share based compensation expense, not yet recognized, period of recognition		26 months
Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 1,138	$ 1,056
Share based compensation expense, not yet recognized		$ 10,188
Share based compensation expense, not yet recognized, period of recognition		35 months
Exchangeable Senior Notes 3.75% | Convertible Debt
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of instrument converted	100.00%

XML

Shareholders' Equity (Deficit) of the Company (Schedule of Calculation of Numerator and Denominator in Earnings Per Share) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator - Income (loss)
Net income (loss) from continuing operations	$ 11,609	$ (8,072)
Net loss from discontinued operations	0	(24)
Net income (loss) before net gain on disposals	11,609	(8,096)
Net gain on disposals	16,255	17,377
Net income	27,864	9,281
Net income attributable to noncontrolling interest	(802)	(154)
Less: Nonforfeitable dividends allocated to participating shareholders	(203)	(276)
Less: Preferred share dividends	(1,559)	(1,559)
Net income available to common shares outstanding	$ 25,300	$ 7,292
Denominator – Weighted average shares
Weighted average basic shares outstanding (in shares)	160,408,136	140,907,399
Effect of dilutive securities
Unvested non-participating share based payment awards (in shares)	0	71,848
Option (in shares)	8,764	15,576
Exchangeable Senior Notes (in shares)	0	880,796
Diluted shares (in shares)	160,416,900	141,875,619

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Shareholders' Equity (Deficit) of the Company (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Net unrealized gain on derivative securities	$ 37,680	$ 15,630
Net unrealized gain on debt instruments	369	417
Foreign currency translation adjustments:
Net gain on non-derivative net investment hedges	(162)	297
Other foreign currency translation adjustments	(4,757)	(5,734)
Reclassification of swap gain into interest expense	2,434	2,166
Cumulative effect of accounting change	103	0
Total accumulated other comprehensive income	35,667	$ 12,776
Write-off on non-derivative net investment hedge	$ 1,851

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Partners' Capital of the Operating Partnership (Narrative) (Details) - GPT Operating Partnership LP	Mar. 31, 2018 shares
Limited Partners' Capital Account [Line Items]
Partnership units (in units)	160,782,765
Ownership interest in Operating Partnership	96.75%
Ownership percentage by noncontrolling owners	3.25%
Noncontrolling Interest
Limited Partners' Capital Account [Line Items]
Partnership units (in units)	5,388,995

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Partners' Capital of the Operating Partnership (Calculation of Earnings Per Share) (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2016	Mar. 31, 2018 USD ($) shares	Mar. 31, 2017 USD ($) shares
Numerator - Income (loss)
Net income (loss) from continuing operations		$ 11,609	$ (8,072)
Net loss from discontinued operations		0	(24)
Net income (loss) before net gain on disposals		11,609	(8,096)
Net gain on disposals		16,255	17,377
Net income		27,864	9,281
Less: Nonforfeitable dividends allocated to participating unitholders		(203)	(276)
Less: Preferred unit distributions		$ (1,559)	$ (1,559)
Effect of dilutive securities
Unvested non-participating unit based payment awards (in units) | shares		0	71,848
Option (in units) | shares		8,764	15,576
Exchangeable Senior Notes (in units) | shares		0	880,796
Stock split conversion ratio	0.3333
GPT Operating Partnership LP
Numerator - Income (loss)
Net income (loss) from continuing operations		$ 11,609	$ (8,072)
Net loss from discontinued operations		0	(24)
Net income (loss) before net gain on disposals		11,609	(8,096)
Net gain on disposals		16,255	17,377
Net income		27,864	9,281
Less: Net gain attributable to noncontrolling interest in other partnerships		0	(120)
Less: Nonforfeitable dividends allocated to participating unitholders		(203)	(276)
Less: Preferred unit distributions		(1,559)	(1,559)
Net income available to common unitholders		$ 26,102	$ 7,326
Denominator – Weighted average shares
Weighted average basic units outstanding (in units) | shares		165,448,866	141,527,985
Effect of dilutive securities
Unvested non-participating unit based payment awards (in units) | shares		0	71,848
Option (in units) | shares		8,764	15,576
Exchangeable Senior Notes (in units) | shares		0	880,796
Diluted shares (in shares) | shares		165,457,630	142,496,205

XML

Noncontrolling Interests (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Property shares	Mar. 31, 2017 shares	Dec. 31, 2017 USD ($) shares
Noncontrolling Interest [Line Items]
Capital shares reserved for future issuance (in shares)	4,729,480
Noncontrolling interest in operating partnership (in usd) | $	$ 137,800		$ 113,530
Long-term Incentive Plan Units
Noncontrolling Interest [Line Items]
Capital shares reserved for future issuance (in shares)	659,515
GPT Operating Partnership LP
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners	3.25%
Limited partners' capital, units outstanding	159,124,705		159,035,964
Noncontrolling interest in operating partnership (in usd) | $	$ 137,800		$ 113,530
GPT Operating Partnership LP | Long-term Incentive Plan Units
Noncontrolling Interest [Line Items]
Shares vested (in shares)	659,515
Limited Partner | GPT Operating Partnership LP
Noncontrolling Interest [Line Items]
Limited partners' capital, units outstanding	4,729,480
Shares converted	6,038	134,607
Noncontrolling interest in operating partnership (in usd) | $	$ 137,800		$ 113,530
E-Commerce JV | GPT Operating Partnership LP
Noncontrolling Interest [Line Items]
Acquisitions (in units)	996,098
Number of operating properties | Property	2

XML

Noncontrolling Interests (Noncontrolling Interest in the Operating Partnership) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at beginning of period	$ 113,530
Balance at end of period	137,800
GPT Operating Partnership LP
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at beginning of period	113,530
Balance at end of period	137,800
Limited Partner | GPT Operating Partnership LP
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at beginning of period	113,530
Issuance of noncontrolling interests in the Operating Partnership	25,142
Redemption of noncontrolling interests in the Operating Partnership	(130)
Net income attribution	802
Fair value adjustments	232
Dividends	(1,776)
Balance at end of period	$ 137,800

XML

Commitments and Contingencies (Narrative) (Details) € in Thousands, $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Nov. 30, 2017 USD ($) Property	Mar. 31, 2018 USD ($) Property shares	Mar. 31, 2018 EUR (€) Property shares	Dec. 31, 2017 Property	Mar. 31, 2018 EUR (€) Property	Oct. 31, 2017 USD ($)	Oct. 31, 2017 EUR (€)
Commitments And Contingencies [Line Items]
Contributions to unconsolidated equity investments		$ 28,731
Number of Acquisitions | Property		1	1
Round Rock
Commitments And Contingencies [Line Items]
Commitment amount		$ 59,104
Gramercy European Property Fund III
Commitments And Contingencies [Line Items]
Aggregate cost						$ 323,359	€ 262,622
Payments to investments		2,460	€ 1,977
Gramercy European Property Fund III | Parent Company
Commitments And Contingencies [Line Items]
Aggregate cost		64,257			€ 52,187
E-Commerce JV
Commitments And Contingencies [Line Items]
Commitment amount		110,000
Contributions to unconsolidated equity investments		30,206
Cash contributions to equity method investment	$ 30,000	1,130
Number of Acquisitions | Property	6			6
Strategic Office Partners
Commitments And Contingencies [Line Items]
Commitment amount		400,000
Investment in unconsolidated equity investment		29,477
Strategic Office Partners | Parent Company
Commitments And Contingencies [Line Items]
Commitment amount		$ 100,000
Build-to-suit Property | Round Rock
Commitments And Contingencies [Line Items]
Properties obligated to build | Property		1			1
GPT Operating Partnership LP | E-Commerce JV
Commitments And Contingencies [Line Items]
Acquisitions (in units) | shares		996,098	996,098

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Commitments and Contingencies (Schedule of Future Minimum Rental Payments) (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Ground Leases - Operating
April 1 to December 31, 2018, operating	$ 1,888
2019, operating	2,593
2020, operating	2,596
2021, operating	2,567
2022, operating	2,598
Thereafter, operating	73,175
Total minimum rent expense, operating	85,417
Ground Leases - Capital
April 1 to December 31, 2018, capital	1
2019, capital	0
2020, capital	0
2021, capital	0
2022, capital	0
Thereafter, capital	329
Total minimum rent expense, capital	330
Total
April 1 to December 31, 2018	1,889
2019	2,593
2020	2,596
2021	2,567
2022	2,598
Thereafter	73,504
Total	$ 85,747

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Supplemental Cash Flow Information (Non-Cash Activities Recognized in Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Interest paid	$ 19,320	$ 17,447
Income taxes paid	60	71
Proceeds from 1031 exchanges from sale of real estate	5	23,219
Use of funds from 1031 exchanges for acquisitions of real estate	(5)	(23,218)
Non-cash activity:
Fair value adjustment to noncontrolling interest in the Operating Partnership	232	(296)
Debt assumed in acquisition of real estate	0	3,680
Debt transferred in disposition of real estate	0	(10,456)
Non-cash acquisition of consolidated VIE	0	24,930
Dividend reinvestment plan proceeds	46	81
Redemption of units of noncontrolling interest in the Operating Partnership for common shares	(130)	(2,164)
Contributions to unconsolidated equity investments for units of noncontrolling interests in the operating partnership	$ 25,141	$ 0

XML

Subsequent Events (Narrative) (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Apr. 30, 2018 USD ($) Property $ / shares shares	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($) $ / shares
Subsequent Event [Line Items]
Dividends declared (in usd per share) | $ / shares			$ 0.375
Proceeds from sale of land | $		$ 111,012	$ 51,683
Subsequent Event
Subsequent Event [Line Items]
Dividends declared (in usd per share) | $ / shares	$ 0.375
Proceeds from sale of land | $	$ 975
7.125% Series A Preferred Stock
Subsequent Event [Line Items]
Dividend rate on preferred stock		7.125%
7.125% Series A Preferred Stock | Subsequent Event
Subsequent Event [Line Items]
Dividend rate on preferred stock	7.125%
Dividends declared (in usd per share) | $ / shares	$ 0.44531
E-Commerce JV | Subsequent Event
Subsequent Event [Line Items]
Acquisitions (in units) | shares	570,863
Acquisitions, value | $	$ 16,663
Number of operating properties | Property	2

XML

Label	Element	Value
Gramercy European Property Fund (excluding legacy Goodman Europe Joint Venture) [Member] | Corporate Joint Venture [Member]
Equity Method Investment Summarized Financial Information Interest Expense	gpt_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	$ 1,474,000
Equity Method Investment, Summarized Financial Information, Income Tax Expense (Benefit)	gpt_EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpenseBenefit	(146,000)
Income Loss From Equity Method Investments Prior To Adjustments For Reit Basis	gpt_IncomeLossFromEquityMethodInvestmentsPriorToAdjustmentsForReitBasis	446,000
Equity Method Investment, Summarized Financial Information, Operating Expenses	gpt_EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses	2,951,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	2,587,000
Equity Method Investment, Summarized Financial Information, Revenue	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue	10,118,000
Equity Method Investment Summarized Financial Information Depreciation and Amortization	gpt_EquityMethodInvestmentSummarizedFinancialInformationDepreciationandAmortization	4,473,000
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss	1,220,000
Equity Method Investment Summarized Financial Information Expenses	gpt_EquityMethodInvestmentSummarizedFinancialInformationExpenses	8,898,000
Equity Method Investment, Summarized Financial Information, Gain (Loss) on Derivatives	gpt_EquityMethodInvestmentSummarizedFinancialInformationGainLossonDerivatives	1,221,000
Income (Loss) from Equity Method Investments, Adjustments for REIT Basis	gpt_IncomeLossfromEquityMethodInvestmentsAdjustmentsforREITBasis	0
Gramercy European Property Fund (excluding legacy Goodman Europe Joint Venture) [Member] | Continuing Operations [Member] | Corporate Joint Venture [Member]
Income (Loss) from Equity Method Investments	us-gaap_IncomeLossFromEquityMethodInvestments	446,000
Goodman Europe Joint Venture [Member] | Corporate Joint Venture [Member]
Equity Method Investment Summarized Financial Information Interest Expense	gpt_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	672,000
Equity Method Investment, Summarized Financial Information, Income Tax Expense (Benefit)	gpt_EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpenseBenefit	17,000
Income Loss From Equity Method Investments Prior To Adjustments For Reit Basis	gpt_IncomeLossFromEquityMethodInvestmentsPriorToAdjustmentsForReitBasis	67,000
Equity Method Investment, Summarized Financial Information, Operating Expenses	gpt_EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses	922,000
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	1,323,000
Equity Method Investment, Summarized Financial Information, Revenue	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue	4,955,000
Equity Method Investment Summarized Financial Information Depreciation and Amortization	gpt_EquityMethodInvestmentSummarizedFinancialInformationDepreciationandAmortization	2,021,000
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)	us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss	1,340,000
Equity Method Investment Summarized Financial Information Expenses	gpt_EquityMethodInvestmentSummarizedFinancialInformationExpenses	3,615,000
Equity Method Investment, Summarized Financial Information, Gain (Loss) on Derivatives	gpt_EquityMethodInvestmentSummarizedFinancialInformationGainLossonDerivatives	0
Income (Loss) from Equity Method Investments, Adjustments for REIT Basis	gpt_IncomeLossfromEquityMethodInvestmentsAdjustmentsforREITBasis	36,000
Goodman Europe Joint Venture [Member] | Continuing Operations [Member] | Corporate Joint Venture [Member]
Income (Loss) from Equity Method Investments	us-gaap_IncomeLossFromEquityMethodInvestments	$ 31,000