Gramercy Property Trust 10-K 2 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 26, 2015	Jun. 30, 2014
Document Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	CSG
Entity Registrant Name	CHAMBERS STREET PROPERTIES
Entity Central Index Key	1297587
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		236,920,675
Entity Public Float			$1,893,409,009

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments in Real Estate:
Land	$630,840	$639,382
Land Available for Expansion	23,368	24,631
Buildings and Improvements	1,674,955	1,606,209
Gross investments in Real Estate	2,329,163	2,270,222
Less: Accumulated Depreciation and Amortization	-239,973	-195,778
Net Investments in Real Estate	2,089,190	2,074,444
Investments in Unconsolidated Entities	423,693	514,802
Cash and Cash Equivalents	40,139	83,007
Restricted Cash	14,718	15,236
Tenant and Other Receivables, Net	11,216	10,394
Deferred Rent	39,429	35,499
Deferred Leasing Costs and Intangible Assets, Net	220,490	248,872
Deferred Financing Costs, Net	9,321	11,585
Prepaid Expenses and Other Assets	21,612	16,757
Total Assets	2,869,808	3,010,596
LIABILITIES
Secured Notes Payable, Net	610,608	681,200
Unsecured Term Loan Facilities	570,000	570,000
Unsecured Revolving Credit Facility	200,044	170,044
Accounts Payable, Accrued Expenses and Other Liabilities	76,421	50,053
Intangible Liabilities, Net	26,248	28,070
Prepaid Rent and Security Deposits	15,569	16,648
Distributions Payable	9,951	9,931
Total Liabilities	1,508,841	1,525,946
COMMITMENTS AND CONTINGENCIES (NOTE 13)
SHAREHOLDERS' EQUITY
Common Shares of Beneficial Interest, $0.01 par value, 990,000,000 shares authorized; 236,920,675 and 236,463,981 issued and outstanding as of December 31, 2014 and 2013, respectively	2,364	2,359
Additional Paid-in-Capital	2,071,526	2,067,008
Accumulated Deficit	-689,654	-589,313
Accumulated Other Comprehensive (Loss) Income	-23,269	4,596
Total Shareholders' Equity	1,360,967	1,484,650
Total Liabilities and Shareholders' Equity	$2,869,808	$3,010,596

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Common shares, par value (in usd per share)	$0.01	$0.01	$0.01
Common Shares of Beneficial Interest, shares authorized (in shares)	990,000,000	990,000,000
Common Shares of Beneficial Interest, issued	236,920,675	236,463,981
Common Shares of Beneficial Interest, outstanding	236,920,675	236,463,981

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
REVENUES
Rental	$210,180	$196,706	$145,432
Tenant Reimbursements	59,730	53,306	33,411
Other Property Income	1,780	0	0
Total Revenues	271,690	250,012	178,843
EXPENSES
Property Operating	36,757	31,221	21,464
Real Estate Taxes	39,567	37,971	22,636
General and Administrative	31,333	23,138	14,660
Investment Management Fee	0	489	29,695
Acquisition-Related	2,272	2,690	7,752
Depreciation and Amortization	109,292	102,793	72,383
Impairment of Real Estate	27,563	0	0
Transition and Listing	0	12,681	8,249
Total Expenses	246,784	210,983	176,839
OTHER EXPENSES AND INCOME
Interest and Other Income	652	1,321	2,235
Interest Expense	-55,311	-47,295	-33,845
Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	-71	-614	118
Gain on Sale of Real Estate	21,164	0	0
Loss on Early Extinguishment of Debt	-477	-1,051	-17,284
Gain on Conversion of Equity Interest to Controlling Interest	0	75,763	0
Total Other (Expenses) Income	-33,901	29,352	-49,012
(Loss) Income Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	-8,995	68,381	-47,008
Provision For Income Taxes	-780	-287	-266
Equity in Income of Unconsolidated Entities	28,823	12,111	3,959
INCOME (LOSS) FROM CONTINUING OPERATIONS	19,048	80,205	-43,315
DISCONTINUED OPERATIONS
Income from Discontinued Operations	0	382	720
Gain (Loss) on Sale of Real Estate	0	2,759	-413
Income From Discontinued Operations	0	3,141	307
NET INCOME (LOSS)	19,048	83,346	-43,008
(Income) Loss from Continuing Operations Attributable to Noncontrolling Interests	0	-82	32
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	$19,048	$83,264	($42,976)
Basic and Diluted Net Income (Loss) Per Share from Continuing Operations Attributable to Common Shareholders (in usd per share)	$0.08	$0.33	($0.17)
Basic and Diluted Net Income (Loss) Per Share Attributable to Common Shareholders (in usd per share)	$0.08	$0.34	($0.17)
Weighted Average Common Shares Outstanding-Basic and Diluted	236,866,656	242,379,680	248,154,277

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$19,048	$83,346	($43,008)
Foreign Currency Translation (Loss) Gain	-19,183	7,834	4,415
Swap Fair Value Adjustments	-8,682	5,349	10,662
COMPREHENSIVE (LOSS) INCOME	-8,817	96,529	-27,931
Comprehensive (Income) Loss Attributable to Non-Controlling Operating Partnership Units	0	-85	17
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	($8,817)	$96,444	($27,914)

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	USD ($)	USD ($)	USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	$19,048	$83,346	($43,008)
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows Provided by Operating Activities:
Equity in Income of Unconsolidated Entities	-28,823	-12,111	-3,959
Distributions from Unconsolidated Entities	46,953	40,710	40,005
Gain on Interest Rate Swaps	-71	-1,772	-564
Loss on Early Extinguishment of Debt	477	1,147	2,961
Gain on Sale of Real Estate	-21,164	0	0
(Gain) Loss on Sale of Real Estate from Discontinued Operations	0	-2,759	413
Gain on Conversion of Equity Investment to Controlling Interest	0	-75,763	0
Depreciation and Amortization	109,292	103,400	73,653
Impairment of Real Estate	27,563	0	0
Amortization of Non-Cash Interest Expense	-1,112	-367	862
Amortization of Above and Below Market Leases	5,292	6,402	2,485
Share-Based Compensation	5,270	5,713	445
Straight-Line Rent Adjustment	-6,109	-10,269	-7,491
Changes in Operating Assets and Liabilities:
Tenant and Other Receivables	-833	-3,737	-1,639
Prepaid Expenses and Other Assets	-183	-5,935	-3,080
Accounts Payable, Accrued Expenses and Other Liabilities	6,173	4,657	32,481
Net Cash Flows Provided By Operating Activities	161,773	132,662	93,564
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of Real Property	-179,201	-115,377	-266,491
Proceeds from Sales of Real Estate	122,772	30,541	2,885
Investments in Unconsolidated Entities	-7,625	-210,745	-45,568
Distributions from Unconsolidated Entities	58,262	50,908	32,468
Acquisition Deposit	0	-2,750	0
Restricted Cash	833	-2,664	-2,431
Lease Commissions	-7,226	-993	-1,834
Improvements to Variable Interest Entity	0	-11,254	-55,998
Improvements to Investments in Real Estate	-12,377	-9,332	-2,743
Net Cash Flows Used in Investing Activities	-24,562	-271,666	-339,712
CASH FLOWS FROM FINANCING ACTIVITIES
Net Proceeds from Common SharesbPublic Offering	0	0	150,814
Redemption of Common Shares	0	-47,429	-52,912
Repurchase and Cancellation of Common Shares	0	-125,000	0
Repurchase and Cancellation of Vested Shares	-747	-1,585	0
Payment of Distributions	-119,369	-126,021	-78,830
Distribution to Non-Controlling Interest OperatingbPartnership Units	0	-111	-148
Redemption of Class A - Operating Partnership Units	0	-2,279	0
(Acquisition of)/Contribution from Non-Controlling InterestbVariable Interest Entity	0	-3,474	140
Borrowings on Unsecured Revolving Credit Facility	120,000	454,087	265,000
Principal Payments on Unsecured Revolving Credit Facility	-90,000	-549,043	-25,000
Proceeds from Secured Notes Payable	0	6,388	0
Proceeds from Unsecured Term Loan Facilities	0	570,000	0
Principal Payments on Secured Notes Payable	-88,618	-53,823	-137,272
Payment of Financing Costs	-553	-7,015	-6,420
Net Cash Flows (Used in) Provided by Financing Activities	-179,287	114,695	115,372
EFFECT OF FOREIGN CURRENCY TRANSLATION	-792	-39	-146
Net Decrease in Cash and Cash Equivalents	-42,868	-24,348	-130,922
Cash and Cash Equivalents, Beginning of Year	83,007	107,355	238,277
Cash and Cash Equivalents, End of Year	40,139	83,007	107,355
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash Paid During the Period for Interest	56,604	46,085	33,056
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Distributions Declared and Payable	9,951	9,931	37,418
Accounts Payable and Accrued ExpensesbConstruction In Progress	3,289	727	3,264
JV Contribution/DistributionbExpansion	0	19	697
Notes Payable Assumed on Acquisitions of Real Estate	21,281	216,011	0
Lease Inducement	10,822	0	0
Proceeds from Dividend Reinvestment Program	0	33,580	65,421
Conversion of Duke JV Equity Investment to Controlling Interest	$0	$139,558	$0

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common Shares	Additional Paid-in- Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
In Thousands, except Share data, unless otherwise specified
Beginning Balance at Dec. 31, 2011	$1,668,609	$2,309	$2,038,566	($348,602)	($23,664)
Beginning Balance (in shares) at Dec. 31, 2011		230,955,633
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Common Shareholders	-42,976			-42,976
Other Comprehensive Income	15,077				15,077
Net Contributions From Public Offering of Common Shares, $0.01 Par Value (in shares)		24,057,013
Net Contributions From Public Offering of Common Shares, $0.01 Par Value	236,679	241	236,438
Share Based Compensation (in shares)		300,000
Share-Based Compensation	245		245
Costs Associated with Public Offering	-18,337		-18,337
Redemption of Common Shares (in shares)		-5,648,490
Redemption of Common Shares	-52,912	-56	-52,856
Adjustment to Record Non-Controlling Interest at Redemption Value	-168		-168
Distributions ($0.600, $0.551 and $0.378 per share for the years ended 2012, 2013 and 2014, respectively)	-148,884			-148,884
Ending Balance at Dec. 31, 2012	1,657,333	2,494	2,203,888	-540,462	-8,587
Ending Balance (in shares) at Dec. 31, 2012		249,664,156
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Common Shareholders	83,264			83,264
Other Comprehensive Income	13,183				13,183
Net Contributions From Public Offering of Common Shares, $0.01 Par Value (in shares)		3,534,649
Net Contributions From Public Offering of Common Shares, $0.01 Par Value	33,580	36	33,544
Share Based Compensation (in shares)		816,425
Share-Based Compensation	5,913	5	5,908
Redemption of Common Shares (in shares)		-4,996,934
Redemption of Common Shares	-47,429	-50	-47,379
Adjustment to Record Non-Controlling Interest at Redemption Value	154		154
Distributions ($0.600, $0.551 and $0.378 per share for the years ended 2012, 2013 and 2014, respectively)	-132,115			-132,115
Repurchase and Cancellation of Vested Shares (in shares)	-178,078
Repurchase and Cancellation of Vested Shares	-1,585	-2	-1,583
Acquisition of Non-Controlling Interest - VIE	-2,648		-2,648
Repurchase and Cancellation of Common Shares (in shares)		-12,376,237
Repurchase and Cancellation of Common Shares	-125,000	-124	-124,876
Ending Balance at Dec. 31, 2013	1,484,650	2,359	2,067,008	-589,313	4,596
Ending Balance (in shares) at Dec. 31, 2013	236,463,981	236,463,981
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Common Shareholders	19,048			19,048
Other Comprehensive Income	-27,865				-27,865
Share Based Compensation (in shares)		552,007
Share-Based Compensation	5,270	6	5,264
Distributions ($0.600, $0.551 and $0.378 per share for the years ended 2012, 2013 and 2014, respectively)	-119,389			-119,389
Repurchase and Cancellation of Vested Shares (in shares)		-95,313
Repurchase and Cancellation of Vested Shares	-747	-1	-746
Ending Balance at Dec. 31, 2014	$1,360,967	$2,364	$2,071,526	($689,654)	($23,269)
Ending Balance (in shares) at Dec. 31, 2014	236,920,675	236,920,675

Consolidated_Statements_of_Sha1

Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Stockholders' Equity [Abstract]
Common shares, par value (in usd per share)	$0.01	$0.01	$0.01
Distributions declared per common share (in usd per share)	$0.50	$0.55	$0.60

Organization_and_Nature_of_Bus

Organization and Nature of Business	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Nature of Business	Organization and Nature of Business
	Chambers Street Properties (NYSE: CSG) is a self-administered real estate investment trust (a "REIT") that focuses on acquiring, owning and managing net leased industrial and office properties leased to creditworthy tenants. We were formed under the laws of the state of Maryland on March 30, 2004, and have elected to be taxed as a REIT under sections 856 through 860 of the Internal Revenue Code of 1986 (the "Internal Revenue Code") beginning with the taxable period ended December 31, 2004.
	We operate in an umbrella partnership REIT structure in which our operating partnership, CSP Operating Partnership, LP ("CSP OP"), indirectly owns all of our consolidated properties and all of our interests in our unconsolidated properties. CSP OP was formed in Delaware on March 30, 2004, and we are the 100% owner and sole general partner. For each interest in our common shares of beneficial interest $0.01 par value (the "common shares"), that we issue, an equal interest in the limited partnership units of CSP OP is issued to us in exchange for the cash proceeds from the issuance of the interest in our common shares. As of December 31, 2014, we owned 100% of the limited partnership units of CSP OP directly or indirectly through a wholly-owned taxable REIT subsidiary.
	Prior to July 1, 2012, all of our business activities were managed by the former investment advisor pursuant to advisory agreements. On July 1, 2012, we became a self-managed company and changed our name from CB Richard Ellis Realty Trust to Chambers Street Properties in accordance with a plan determined by our Board of Trustees. In addition, as of April 30, 2013, the transitional services agreement with CSP OP ("Transitional Services Agreement") and the former investment advisor that we had entered into as part of our transition to a self-managed company ended and we are now responsible for the management of our day-to-day operations, including the supervision of our employees and third-party service providers. Acquisitions and asset management activities are performed by our employees, with certain services provided by third parties at market rates.
	On May 21, 2013, we listed our common shares on the New York Stock Exchange (the "NYSE") under the symbol "CSG" (the "Listing") and concurrently commenced a modified "Dutch Auction" tender offer to purchase up to $125.0 million in value of the common shares (the "Tender Offer") from our shareholders. As a result of the Tender Offer, on June 26, 2013, we accepted for purchase 12,376,237 common shares at a purchase price of $10.10 per share, for an aggregate cost of approximately $125.0 million, excluding fees and expenses relating to the Tender Offer. As of December 31, 2014, we had 236,920,675 common shares issued and outstanding.
	As of December 31, 2014, we owned, on a consolidated basis, 102 industrial (primarily warehouse/distribution) and office properties located in 18 U.S. states (Arizona, California, Colorado, Florida, Illinois, Indiana, Kansas, Kentucky, Maryland, Massachusetts, Minnesota, New Jersey, North Carolina, Ohio, Pennsylvania, South Carolina, Texas and Virginia) and in the United Kingdom, encompassing approximately 25.3 million net rentable square feet. Our consolidated properties were approximately 97.5% leased (based upon rentable square feet) (unaudited) as of December 31, 2014. As of December 31, 2014, 77 of our consolidated properties were net leased to single tenants, which encompassed approximately 20.6 million rentable square feet (unaudited).
	We had ownership interests in four unconsolidated entities that, as of December 31, 2014, owned interests in 29 properties. Excluding those properties owned through our investment in CB Richard Ellis Strategic Partners Asia II-A, L.P. ("CBRE Strategic Partners Asia"), we owned, on an unconsolidated basis, 26 industrial (primarily warehouse/distribution) and office properties located in eight U.S. states (Arizona, Florida, Illinois, Indiana, North Carolina, Ohio, Tennessee and Texas) and three countries in Europe (France, Germany and the United Kingdom), encompassing approximately 12.4 million rentable square feet (unaudited). Our unconsolidated properties were approximately 99.9% leased (based upon rentable square feet) (unaudited) as of December 31, 2014. As of December 31, 2014, 20 of our unconsolidated properties were net leased to single tenants, which encompassed approximately 11.5 million rentable square feet (unaudited).

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies
	Basis of Presentation and Principles of Consolidation
	The accompanying consolidated financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles ("GAAP") and reflect the accounts of the Company, CSP OP and its consolidated subsidiaries. The Company consolidates its wholly-owned properties and joint ventures it controls through either 1) voting rights or similar rights or 2) by means other than voting rights if the Company is deemed to be the primary beneficiary of a variable interest entity ("VIE"). All intercompany accounts and transactions are eliminated in consolidation.
	Use of Estimates
	The preparation of financial statements, in conformity with GAAP, requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Investment in Unconsolidated Entities
	We determine if an entity is a VIE based on several factors, including whether the entity's total equity investment at risk upon inception is sufficient to finance the entity's activities without additional subordinated financial support. We make judgments regarding the sufficiency of the equity at risk based first on a qualitative analysis, then a quantitative analysis, if necessary. In a quantitative analysis, we incorporate various estimates, including estimated future cash flows, asset holding periods and discount rates, as well as estimates of the probabilities of the occurrence of various scenarios occurring. If the entity is a VIE, we then determine whether to consolidate the entity as the primary beneficiary. We determine whether an entity is a VIE and, if so, whether it should be consolidated by utilizing judgments and estimates that are inherently subjective. If we made different judgments or utilized different estimates in these evaluations, it could result in differing conclusions as to whether or not an entity is a VIE and whether or not we consolidate such entity.
	With respect to our majority limited membership interests in the Duke/Hulfish, LLC joint venture (the "Duke JV"), the Afton Ridge Joint Venture, LLC ("Afton Ridge"), the Goodman Princeton Holdings (Jersey) Limited joint venture (the "UK JV") and the Goodman Princeton Holdings (LUX) SARL joint venture (the "European JV"), we considered the Accounting Standards Codification ("ASC") Topic "Consolidation" ("FASB ASC 810") in determining that we did not have control over the financial and operating decisions of such entities due to the existence of substantive participating rights held by the minority limited members who are also the managing members of the Duke JV and Afton Ridge, and the investment advisors/managers of the UK JV and the European JV, respectively. Additionally, we concluded that each of these entities was under the shared control of its limited members. The accounting policies applied by each of these entities are consistent with those applied by us.
	We carry our investments in our joint ventures using the equity method of accounting because we have the ability to exercise significant influence (but not control) over operating and financial policies of each such entity. We eliminate transactions with such equity method entities to the extent of our ownership in each such entity. Accordingly, our share of net income (loss) of these equity method entities is included in consolidated net income (loss).
	Our determination of the appropriate accounting method with respect to our investment in CBRE Strategic Partners Asia, which is not considered a VIE, is partially based on CBRE Strategic Partners Asia's sufficiency of equity investment at risk which was triggered by a substantial paydown during 2009 of its subscription line of credit, which is backed by investor capital commitments to fund its operations. We account for this investment under the equity method of accounting.
	CBRE Strategic Partners Asia is a limited partnership that qualifies for specialized industry accounting for investment companies. Specialized industry accounting allows investment companies to carry their investments at fair value, with changes in the fair value of the investments recorded in the statement of operations. On the basis of the guidance in ASC 970-323, the Company accounts for its investment in CBRE Strategic Partners Asia under the equity method. As a result, and in accordance with ASC 810-10-25-15, the specialized accounting treatment, principally the fair value basis applied by CBRE Strategic Partners Asia under the investment company guide, is retained in the recognition of equity method earnings in the statement of operations of the Company. See Note 12 "Fair Value of Financial Instruments and Investments" for further discussion of the application of the fair value accounting to our investment in CBRE Strategic Partners Asia.
	Consolidated Variable Interest Entities
	In October 2011, one of our consolidated subsidiaries, RT Atwater Holding, LLC, entered into a real estate development venture with a subsidiary of the Trammel Crow Company ("TCC"), a wholly-owned subsidiary of CBRE Group, Inc., a former related party of ours, whereby we own 95% of the newly formed entity and TCC owns the remaining 5% of the entity. The new entity, RT/TC Atwater, LP ("Atwater"), was formed for the purpose of developing and then operating a build-to-suit suburban office and research facility for a single tenant that has agreed to a minimum lease term of 12 years starting from the completion of construction of the facility. Through the provisions of the Atwater, LP agreement, we and TCC collectively have the power to direct the activities that most significantly impact the economic performance of Atwater. Atwater was deemed a variable interest entity and we were the entity within the related party group determined to be most closely associated with Atwater. We began to consolidate the entity at its inception in October 2011. The construction of the Atwater property was substantially complete and ready for its intended use in January 2013 and upon substantial completion we acquired our outside partner's 5% interest in the project for approximately $3.5 million.
	Segment Information
	We currently operate our consolidated properties in two geographic areas, the United States and the United Kingdom. We view our consolidated property operations as two reportable segments, Industrial Properties and Office Properties, which participate in the acquisition, development, ownership, and operation of high quality real estate in their respective segments.
	Cash Equivalents
	We consider short-term investments with maturities of three months or less when purchased to be cash equivalents. As of December 31, 2014 and 2013, cash equivalents consisted primarily of investments in money market funds.
	Restricted Cash
	Restricted cash represents those cash accounts for which the use of funds is restricted by loan covenants. As of December 31, 2014 and 2013, our restricted cash balance was $14.7 million and $15.2 million, respectively, which represented amounts set aside as impounds for future property tax payments, property insurance payments and tenant improvement payments as required by our agreements with our lenders.
	Discontinued Operations and Real Estate Held for Sale
	A discontinued operation arises upon the disposal of a component of an entity (or upon the classification of a component as held for sale), provided that (1) the operations and cash flows of the component have been or will be eliminated from the entity's ongoing operations and (2) the entity will have no significant continuing involvement in the component after disposition. In a period in which a component has been disposed of or is classified as held for sale, the statements of operations for current and prior periods report the results of operations of the component as discontinued operations. In the first quarter of 2014, we adopted ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which requires only disposals representing a strategic shift in operations (i.e., a disposal of a major geographic area, a major line of business, or a major equity method investment) to be presented as discontinued operations.
	At such time as a property is deemed held for sale, such property is carried at the lower of: (1) its carrying amount or (2) fair value less costs to sell. In addition, a property being held for sale ceases to be depreciated. We classify operating properties as property held for sale in the period in which all of the following criteria are met:
	•	management, having the authority to approve the action, commits to a plan to sell the component;
	•	the component is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such components;
	•	an active program to locate a buyer and other actions required to complete the plan to sell the component has been initiated;
	•	the sale of the component is probable and the transfer of the component is expected to qualify for recognition as a completed sale within one year;
	•	the component is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and
	•	given the actions required to complete the plan to sell the component, it is unlikely that significant changes to the plan would be made or that the plan would be withdrawn.
	Accounting for Derivative Financial Instruments and Hedging Activities
	All of our derivative instruments are carried at fair value on the balance sheet. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking each hedge transaction. We periodically review the effectiveness of each hedging transaction, which involves estimating future cash flows. Cash flow hedges are accounted for by recording the fair value of the derivative instrument on the balance sheet as either an asset or liability, with a corresponding amount recorded in other comprehensive income within shareholders' equity. Only the effective portion of qualifying hedging relationships are recorded to other comprehensive income with the ineffective portion recorded to earnings. Calculation of the fair value of derivative instruments also requires management to use estimates. Amounts will be reclassified from other comprehensive income to the income statement in the period or periods the hedged forecasted transaction affects earnings.
	We have certain interest rate swap derivatives that are designated as qualifying cash flow hedges and follow the accounting treatment discussed above. We also have certain interest rate swap derivatives that do not qualify for hedge accounting, and accordingly, changes in fair values are recognized in current earnings.
	Investments in Real Estate and Related Long Lived Assets (Impairment Evaluation)
	Our investments in real estate are stated at depreciated cost. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives as follows:
	Asset Description		Depreciable Lives
	Buildings and Improvements		39 years
	Site Improvements		15 - 25 years
	Tenant Improvements		Shorter of the useful lives or the terms of the related leases
	Improvements and replacements are capitalized when they extend the useful life, increase capacity, or improve the efficiency of the asset. Repairs and maintenance are charged to expense as incurred. Land available for expansion is recorded at cost and separated out accordingly.
	We assess whether there has been impairment in the value of our long-lived assets whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount to the future net cash flows, undiscounted and without interest, expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the estimated fair value of the assets. The estimated fair value of the asset group identified for step two testing is based on either the income approach with market discount rate, terminal capitalization rate and rental rate assumptions being most critical, or on the sales comparison approach to similar properties. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less costs to sell.
	We evaluate our investments in unconsolidated entities for indicators of impairment during each reporting period. A series of operating losses of an investee or other factors may indicate that a decrease in value of the Company's investment in the unconsolidated entity has occurred which is other-than-temporary. The amount of impairment recognized is the excess of the investment's carrying amount over its estimated fair value, which may be below the balance of any non-recourse mortgage financing. If a property level impairment is recorded by an unconsolidated entity related to its assets, the Company's proportionate share is reflected in the equity in loss from unconsolidated entities with a corresponding decrease to its investment in unconsolidated entities. In the event the property were to be under development, the estimate of future cash flows includes all future expenditures necessary to develop the property. If the carrying amount exceeds the aggregate future cash flows, we would recognize an impairment loss to the extent the carrying amount exceeds the fair market value of the property
	Additionally, the Company considers various qualitative factors to determine if a decrease in the value of the investment is other-than-temporary. These factors include age of the venture, intent and ability for the Company to recover its investment in the entity, financial condition and long-term prospects of the entity and its underlying real estate assets, short-term liquidity needs of the unconsolidated entity, trends in the economic environments or leasing markets where its real estate assets are located, overall projected returns on investment, and any defaults under contracts with third parties (including bank debt). If the Company believes that the decline in the fair value of the investment is temporary, then no impairment is recorded.
	Prepaid Expenses and Other Assets
	Prepaid expenses and other assets consisted of the following as of December 31, 2014 and 2013 (in thousands):
		December 31,
		2014		2013
	Prepaid Insurance and Real Estate Taxes	$	3,022	$	2,699
	Tenant Lease Inducement, Net	13,927		3,274
	Acquisition Deposit	—		2,750
	Derivative Asset	1,733		5,211
	Other	2,930		2,823
	Total	$	21,612	$	16,757
	Purchase Accounting for Acquisition of Investments in Real Estate
	We apply the business combination method to all acquired real estate investments. The purchase consideration of the real estate is allocated to the acquired tangible assets, consisting primarily of land, site improvements, building and tenant improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases, value of tenant relationships and acquired ground leases, based in each case on their fair values. Loan premiums, in the case of above-market rate loans, or loan discounts, in the case of below-market loans, will be recorded based on the fair value of any loans assumed in connection with acquiring the real estate.
	The fair value of the tangible assets of an acquired property is determined by valuing the property as if it were vacant, and the "as-if-vacant" value is then allocated to all land (or acquired ground lease if the land is subject to a ground lease) and site improvements based on management's determination of the relative fair values of these assets. Management determines the as-if-vacant fair value of a property by underwriting the property as if it were vacant and subsequently re-leased at the market. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses associated with the property. Management also estimates costs to execute similar leases including leasing commissions and tenant improvements.
	In allocating the purchase consideration of the identified intangible assets and liabilities of an acquired property, above-market and below-market in-place lease values are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases; and (ii) management's estimate of fair market lease rates for the corresponding in-place leases measured over a period equal to the remaining non-cancelable term of the lease and, for below-market leases, over a period equal to the initial term plus any below-market fixed rate renewal periods. The capitalized below-market lease values, also referred to as acquired lease obligations, are amortized as an increase to rental income over the initial terms of the respective leases and any below-market fixed rate renewal periods. The capitalized above-market lease values are amortized as a decrease to rental income over the initial terms of the prospective leases.
	The aggregate value of other acquired intangible assets, consisting of in-place leases and tenant relationships, is measured by the estimated cost of operations during a theoretical lease-up period to replace in-place leases, including lost revenues and any unreimbursed operating expenses, plus an estimate of deferred leasing commissions for in-place leases. This aggregate value is allocated between in-place lease value and tenant relationships based on management's evaluation of the specific characteristics of each tenant's lease; however, the value of tenant relationships has not been separated from in-place lease value for the real estate acquired as such value and its consequence to amortization expense is immaterial for these particular acquisitions. Should future acquisitions of properties result in allocating material amounts to the value of tenant relationships, an amount would be separately allocated and amortized over the estimated life of the relationship. The value of in-place leases is amortized to expense over the remaining non-cancelable periods of the respective leases. If a lease were to be terminated prior to its stated expiration, all unamortized amounts relating to that lease would be written-off.
	Comprehensive Income (Loss)
	Comprehensive income (loss) consists of net income (loss) and other comprehensive income (loss). In the accompanying consolidated balance sheets, accumulated other comprehensive income (loss) consists of foreign currency translation adjustments and swap fair value adjustments for the qualifying portion of designated hedges.
	Revenue Recognition and Valuation of Receivables
	All leases are classified as operating leases and minimum rents are recognized on a straight-line basis over the terms of the leases. The excess of rents recognized over amounts contractually due pursuant to the underlying leases is recorded as deferred rent. In connection with various leases, we have received irrevocable stand-by letters of credit totaling $20.3 million and $14.5 million as security for such leases at December 31, 2014 and 2013, respectively.
	Reimbursements from tenants, consisting of amounts due from tenants for common area maintenance, real estate taxes, insurance and other recoverable costs, are recognized as revenue in the period the expenses are incurred. Tenant reimbursements are recognized and presented on a gross basis, when we are the primary obligor with respect to incurring expenses and with respect to having the credit risk.
	In addition, rental revenue is impacted by management’s evaluation of whether we or the tenant is the owner of tenant improvements. The determination of whether we are or the tenant is the owner of the tenant improvements for accounting purposes is subject to significant judgment. When we conclude that we are not the owner and the tenant is the owner of tenant improvements for accounting purposes, we record our contribution towards those improvements as a lease incentive, which is amortized as a reduction to rental revenue on a straight-line basis over the term of the related lease, and rental revenue recognition begins when the tenant takes possession of or controls the space.
	Tenant receivables and deferred rent receivables are carried net of the allowances for uncollectible current tenant receivables and deferred rent. Management's determination of the adequacy of these allowances is based primarily upon evaluations of historical loss experience, individual receivables, current economic conditions, and other relevant factors. The allowances are increased or decreased through the provision for bad debts. The allowance for uncollectible rent receivable was $62,000 and $24,000 as of December 31, 2014 and 2013, respectively. During the years ended December 31, 2013 and 2012, we wrote off approximately $0.2 million and $0.4 million, respectively, of uncollectible receivables. We did not write off any uncollectible receivables in 2014.
	Translation of Non-U.S. Currency Amounts
The financial statements and transactions of our United Kingdom real estate operation are recorded in their functional currency, namely the Great Britain Pound ("GBP") and are then translated into U.S. dollars ("USD").
Assets and liabilities of this operation are denominated in the functional currency and are then translated at exchange rates in effect at the balance sheet date. Revenues and expenses are translated at the average exchange rate for the reporting period. Translation adjustments are reported in "Accumulated Other Comprehensive Loss," a component of Shareholders' Equity.
The carrying value of our United Kingdom assets and liabilities fluctuate due to changes in the exchange rate between the USD and the GBP. The exchange rate of the USD to the GBP was $1.5576 and $1.6573 at December 31, 2014 and 2013, respectively. The profit and loss average exchange rate of the USD to the GBP was approximately $1.6533, $1.5628 and $1.5865 for the years ended December 31, 2014, 2013 and 2012, respectively.
The carrying value of our assets and liabilities held within our European JV fluctuate due to changes in the exchange rate between the USD and the EUR. The exchange rate of the USD to the EUR was $1.2099 and $1.3753 at December 31, 2014 and 2013. The profit and loss average exchange rate of the USD to the EUR was approximately $1.3326, $1.3248 and $1.2877 for the years ended December 31, 2014, 2013 and 2012, respectively.
Transition and Listing Expenses
We incurred certain costs in connection with our transition from being an externally managed company to a self-managed company ("Transition Costs"). These Transition Costs consisted of legal, consulting and other third-party service provider costs incurred by us in order to execute on our Board of Trustees' decision to become a self-managed company. The Transition Costs were primarily incurred during 2012, with the exception of $0.7 million incurred during 2013 as a final settlement of the Transition Services Agreement.
We incurred certain costs in connection with the Listing and our Tender Offer in 2013. These Listing expenses consisted of legal, investment banking, share-based compensation, consulting and other third-party service provider costs incurred by us in order to complete the Listing and Tender Offer. Listing costs totaling $12.0 million were incurred during the year ended December 31, 2013. Of the Listing expenses incurred through December 31, 2013, $3.8 million was attributable to share-based compensation.
Income Taxes
We elected to be taxed as a REIT under the Internal Revenue Code commencing with our taxable year ended December 31, 2004. To qualify as a REIT, we must meet a number of organizational and operational requirements, including a requirement that we generally distribute at least 90% of our REIT taxable income (determined without regard to the dividends paid deduction and excluding net capital gain). It is our current intention to adhere to these requirements and maintain our REIT qualification. As a REIT, we generally will not be subject to corporate level U.S. federal income tax on net income we distribute currently to our shareholders. If we fail to qualify as a REIT in any taxable year, then we will be subject to U.S. federal income taxes at regular corporate rates (including any applicable alternative minimum tax) and may not be able to qualify as a REIT for four subsequent taxable years. We believe that we have met all of the REIT organizational and operational requirements for the years ended December 31, 2014, 2013 and 2012, and we were not subject to any U.S. federal income taxes, other than U.S. federal income taxes on income generated by our Taxable REIT Subsidiary. As such, we have not provided for income taxes other than as addressed below.
ASC 740-10 Income Taxes requires recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements or tax returns. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse.
We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.
No deferred tax assets or liabilities were recorded as of December 31, 2014, other than as mentioned below related to the United Kingdom net operating losses. In addition, we believe that any current or deferred tax liability associated with our Taxable REIT Subsidiary would be de minimis.
We record uncertain tax positions in accordance with ASC 740 on the basis of a two-step process in which (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position, and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.
We did not have any uncertain tax positions which would require us to record any unrecognized tax benefits or additional tax liabilities as of December 31, 2014.
Even if we qualify for taxation as a REIT, we may be subject to certain state, foreign, and local taxes on our income and property and to U.S. federal income and excise taxes on our undistributed taxable income, if any.
Included as a component of our tax provision, we have incurred income and other taxes (franchise, local and state government and international) related to our continuing operations in the amount of $0.8 million, $0.3 million and $0.3 million during the years ended December 31, 2014, 2013 and 2012, respectively.
The United Kingdom taxes real property operating results at a statutory rate of 20%. The properties which we hold in the United Kingdom have operated at a taxable loss to date and have generated a deferred tax asset of approximately $0.6 million consisting of these net operating loss carryforwards. We have provided for a full valuation allowance of $0.6 million as of December 31, 2014 on deferred tax assets because it is not likely that future operating profits in the United Kingdom would be sufficient to absorb the net operating losses.
The tax years from 2010 through 2014 remain open to examination by the taxing jurisdictions to which the Company is subject.
Deferred Financing Costs and Note Premiums/Discounts
Direct costs incurred in connection with obtaining financing are amortized over the respective term of the loan on a straight-line basis, which approximates the effective interest method.
Discounts/premiums on notes payable are amortized to interest expense based on the effective interest method.
Fair Value of Financial Instruments and Investments
We generally determine or calculate the fair value of financial instruments using appropriate present value or other valuation techniques, such as discounted cash flow analyses, incorporating available market discount rate information for similar types of instruments and our estimates for non-performance and liquidity risk. These techniques are significantly affected by the assumptions used, including the discount rate, credit spreads, and estimates of future cash flow. The Investment Manager of CBRE Strategic Partners Asia applies valuation techniques for our investment carried at fair value based upon the application of the income approach, the direct market comparison approach, the replacement cost approach or third party appraisals to the underlying assets held in the unconsolidated entity in determining the net asset value attributable to our ownership interest therein. As of December 31, 2014, the financial assets and liabilities recorded at fair value in our consolidated financial statements are our derivative instruments and our investment in CBRE Strategic Partners Asia.
The remaining financial assets and liabilities which are only disclosed at fair value are comprised of all other notes payable, the unsecured line of credit and other debt instruments. We determined the fair value of our secured notes payable and other debt instruments by performing discounted cash flow analyses using an appropriate market discount rate. We calculate the market discount rate by obtaining period-end treasury rates for fixed-rate debt, or London Inter-Bank Offering Rate ("LIBOR") rates for variable-rate debt, for maturities that correspond to the maturities of our debt and then adding an appropriate credit spread derived from information obtained from third-party financial institutions. These credit spreads take into account factors such as our credit standing, the maturity of the debt, whether the debt is secured or unsecured, and the loan-to-value ratios of the debt.
The carrying amounts of our cash and cash equivalents, restricted cash, tenant and other receivable and accounts payable approximate fair value due to their short-term maturities.
Share-based Compensation
For share-based awards for which there is no pre-established performance period, we recognize compensation costs over the service vesting period, which represents the requisite service period, on a straight-line basis.
For share-based awards in which the performance period precedes the grant date, we recognize compensation costs straight-lined over the requisite service period, which includes both the performance and service vesting periods. The requisite service period begins on the date the Compensation Committee of the Board of Trustees authorizes the award and adopts any relevant performance measures.
During the performance period for a share-based award program, we estimate the total compensation cost of the potential future awards. We then record compensation costs equal to the portion of the requisite service period that has elapsed through the end of the reporting period.
For share-based awards granted by the Company, CSP OP issues a number of common units equal to the number of common shares ultimately granted by us in respect of such awards.
New Accounting Standards
In April 2014, the FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which requires only disposals representing a strategic shift in operations (i.e., a disposal of a major geographic area, a major line of business, or a major equity method investment) to be presented as discontinued operations. The standard also requires expanded disclosures about discontinued operations and is intended to provide financial statement users with information about the ongoing trends in a company's results from continuing operations. ASU No. 2014-08 is effective in the first quarter of 2015 for public entities with calendar year ends. However, companies are permitted to early adopt the standard, beginning in the first quarter of 2014, but only for disposals or classifications as held for sale that have not been reported in financial statements previously issued or available for issuance. We early adopted this standard in the first quarter of 2014 and the adoption did not have a material effect on our financial condition, results of operations, or disclosures.
In May 2014, the FASB and IASB issued their final standard on revenue from contracts with customers. The standard, issued by the FASB as ASU 2014-09, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including the guidance on real estate derecognition for most transactions. Entities have the option of using either a full retrospective or a modified approach to adopt the guidance in ASU 2014-09. For public entities, the ASU is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Early application is not permitted. We are assessing the impact of this guidance on our consolidated financial statements and notes to our consolidated financial statements.
In June 2014, the FASB issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The ASU clarifies that entities should treat performance targets that can be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense (measured as of the grant date without taking into account the effect of the performance target) related to an award for which transfer to the employee is contingent on the entity’s satisfaction of a performance target until it becomes probable that the performance target will be met. ASU No. 2014-12 will be effective for all entities for reporting periods (including interim periods) beginning after December 15, 2015, and early adoption is permitted. ASU 2014-12 may be adopted either prospectively for share-based payment awards granted or modified on or after the effective date, or retrospectively, using a modified retrospective approach. The modified retrospective approach would apply to share-based payment awards outstanding as of the beginning of the earliest annual period presented in the financial statements on adoption, and to all new or modified awards thereafter. The adoption of this guidance is not anticipated to have a material impact on our consolidated financial statements or notes to our consolidated financial statements.
In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The ASU provides guidance on determining when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date the financial statements are issued. An entity must provide certain disclosures if conditions or events raise substantial doubt about the entity’s ability to continue as a going concern. The ASU applies to all entities and is effective for annual periods ending after December 15, 2016, and interim periods thereafter, with early adoption permitted. The adoption of this guidance is not anticipated to have a material impact on our consolidated financial statements or notes to our consolidated financial statements.
In March 2013, the FASB issued ASU No. 2013-05, Foreign Currency Matters (Topic 830): Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity. ASU 2013-05 specifies that a cumulative translation adjustment (CTA) is attached to a parent company’s investment in a foreign entity and should be released in a manner consistent with derecognition guidance on investments in entities. Therefore, the entire amount of the CTA associated with a foreign entity would be released upon 1) sale of a subsidiary or group of net assets within a foreign entity, which represents the substantially complete liquidation of the investment in the entity, 2) loss of a controlling financial interest in an investment in a foreign entity, or 3) step acquisition of a foreign entity. ASU 2013-05 does not change the requirement to release a pro rata portion of the CTA of the foreign entity into earnings for a partial sale of an equity method investment in a foreign entity. ASU 2013-05 is effective for interim periods and fiscal years beginning on or after December 15, 2013, with early adoption permitted. We have applied the guidance prospectively to any derecognition events that occurred after the effective date and do not expect the adoption of ASU 2013-05 to have a material impact on our consolidated results of operations or financial position.

Investment_in_Real_Estate_Acti

Investment in Real Estate Activity	12 Months Ended
	Dec. 31, 2014
Real Estate [Abstract]
Investment in Real Estate Activity	Investment in Real Estate Activity
	Wholly-Owned Property Acquisitions
	During the year ended December 31, 2014, we acquired seven industrial properties. The acquisitions were funded with proceeds from our unsecured revolving credit facility and proceeds from the sale of properties.
	Property		Market				Date of		Purchase				Net		% Leased at 12/31/14
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)			Property Type
	445 Airtech Parkway(1)		Indianapolis		IN		1/2/14		$	30,200			622,440		100%	Industrial
	1 Rocket Road(2)		Los Angeles - South Bay		CA		7/31/14		46,650				514,753		100%	Industrial
	1659 Sauget Business Blvd		St. Louis		MO		10/24/14		21,100				502,500		100%	Industrial
	325 Center Point Blvd		Northeast		PA		11/18/14		45,750				744,080		100%	Industrial
	550 Oak Ridge Drive		Northeast		PA		11/18/14		40,700				615,600		100%	Industrial
	125 Capital Road		Northeast		PA		11/18/14		8,700				144,000		100%	Industrial
	14-46 Alberigi Drive		Northeast		PA		11/18/14		10,500				140,800		100%	Industrial
	Total 2014 Wholly-Owned Property Acquisitions								$	203,600			3,284,173
	________
	-1	The purchase price includes a $2.8 million deposit paid during the fourth quarter of 2013.
	-2	In connection with this acquisition, we assumed secured debt with an outstanding principal balance of $18.7 million that was recorded at fair value on the acquisition date, resulting in a premium of approximately $2.6 million.
	During the year ended December 31, 2013, we acquired two office/industrial properties. The acquisitions were funded with proceeds from our unsecured revolving credit facility.
	Property		Market				Date of		Purchase				Net		% Leased at 12/31/14
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)			Property Type
	Carpenter Corporate Center I and II		Dallas		TX		7/31/13		$	49,509			226,822		100%	Office
	1200 Woods Chapel Road		Spartanburg		SC		8/8/13		10,750				156,800		100%	Industrial
	Total 2013 Wholly-Owned Property Acquisitions								$	60,259			383,622
	The following table summarizes the allocation of the fair value of amounts recognized for each major class of assets and liabilities for properties acquired during the year ended December 31, 2014 (in thousands):
			2014 Acquisitions
			445 Airtech Parkway (1)				1 Rocket				1659			325			550		125		14-46		Total
							Road (2)				Sauget			Centerpoint			Oak Ridge		Capital Road (2)		Alberigi
											Business			Blvd (2)			Drive (2)				Drive (2)
											Blvd (2)
	Assets
	Land		$	5,666			$	15,887			$	1,515		$	5,856		$	8,134	$	1,759	$	2,444	$	41,261
	Land Available for Expansion		1,070				—				—			—			—		—		—		1,070
	Building and Improvements		19,443				30,774				17,524			35,009			28,859		6,098		6,892		144,599
	Acquired In-Place Leases(3)		2,596				4,541				1,311			2,764			2,905		693		888		15,698
	Acquired Above-Market Leases(4)		—				—				338			170			47		—		211		766
	Deferred Leasing Costs(5)		—				947				467			1,951			755		150		297		4,567
	Other Intangible Assets(6)		1,425				—				—			—			—		—		16		1,441
	Prepaid Expenses and Other Assets		—				180				—			—			330		—		—		510
	Total Assets Acquired		30,200				52,329				21,155			45,750			41,030		8,700		10,748		209,912
	Liabilities
	Acquired Below-Market Leases(7)		—				2,894				55			—			—		—		248		3,197
	Secured Notes Payable, Net		—				21,281				—			—			—		—		—		21,281
	Other Liabilities Assumed		216				260				164			—			2,843		—		—		3,483
	Total Assumed Liabilities		216				24,435				219			—			2,843		—		248		27,961
	Net Assets Acquired		$	29,984			$	27,894			$	20,936		$	45,750		$	38,187	$	8,700	$	10,500	$	181,951
	__________
	-1	Represents final allocation of the fair value of amounts recognized for each major class of assets and liabilities.
	-2	Represents preliminary allocation of the fair value of amounts recognized for each major class of assets and liabilities.
	-3	Represents acquired in-place leases with a weighted average amortization period of 6.17 years.
	-4	Represents acquired below-market leases with a weighted average amortization period of 4.63 years.
	-5	Represents deferred leasing costs with weighted average amortization period of 4.65 years.
	-6	Represents other intangible assets with a weighted average amortization period of 9.92 years.
	-7	Represents acquired below-market leases with a weighted average amortization period of 8.21 years.
	The following table summarizes the combined results from operations for the 2014 acquisitions from their respective dates of acquisition through December 31, 2014 (in thousands):
	Revenues	$	5,709
	Net Income	$	99
	The following table summarizes the final allocation of the fair value of amounts recognized for each major class of assets and liabilities for properties acquired during the year ended December 31, 2013 (in thousands):
		2013 Acquisitions
		Carpenter Corporate				1200 Woods Chapel Road				Total
		Center I & II
	Land	$	5,901			$	1,560			$	7,461
Building and Improvements	35,950				7,357				43,307
Acquired In-Place Leases (1)	7,795				1,237				9,032
Acquired Above-Market Leases (1)	481				596				1,077
Total Acquired Assets	50,127				10,750				60,877
Acquired Below-Market Leases (2)	618				—				618
Total Assumed Liabilities	618				—				618
Net Assets Acquired	$	49,509			$	10,750			$	60,259
__________
-1	Represents in-place leases with a weighted average amortization period of 9.34 years and above-market leases with a weighted average amortization period of 7.56 years.
-2	Represents below-market leases with a weighted average amortization period of 9.92 years.
The following table summarizes the combined results from operations for Carpenter Corporate Center I & II and 1200 Woods Chapel Road from July 31, 2013 and August 8, 2013, the respective dates of acquisition, through December 31, 2013 (in thousands):
Revenues	$	2,184
Net Income	$	726
Purchase of Outside Equity Interests in Properties
On January 30, 2013, we completed construction of a build-to-suit project at 1400 Atwater Drive located in Malvern, Pennsylvania. The project had previously been accounted for as a consolidated VIE and all activity had been included on the consolidated balance sheet as Construction in progress - VIE. Upon substantial completion of construction, we acquired our outside partner's 5% interest in the project for approximately $3.5 million.
On March 1, 2013, we acquired the remaining 20% interest in 17 properties that were held in a joint venture with Duke Realty ("Duke Portfolio"). The properties are located in Phoenix, Raleigh/Durham, Houston, Columbus, Cincinnati, Orlando, Ft. Lauderdale, Minneapolis and Dallas and consisted of 16 office buildings and one warehouse/distribution building totaling 3,318,402 square feet. The acquisition was structured such that membership interests in each of the subsidiaries that hold the properties were distributed to Duke Realty and CSP OP on a pro rata basis in accordance with their percentage ownership interests in the Duke JV (80% to CSP OP and 20% to Duke Realty) and CSP OP then purchased Duke Realty's 20% membership interests in those subsidiaries, resulting in CSP OP owning a 100% interest in each of the property-owning subsidiaries. The purchase price was approximately $98.1 million to acquire the remaining 20% interest in these properties, corresponding to a valuation of approximately $490.7 million for a 100% interest in these properties. The transaction constituted a change in control of the previously unconsolidated 17 properties, which required a remeasurement of the net assets acquired to fair value. This resulted in a net gain of $75.8 million upon acquisition. The net assets acquired were also remeasured to fair value by the Duke JV In conjunction with the distribution of membership interests and resulted in a gain recognized by the Duke JV. In accordance with ASC 323-10-35-7, this gain has been eliminated as intra-entity profit.
The following table summarizes the final allocation of the fair value of amounts recognized for each major class of assets and liabilities (in thousands):
Land	$	60,310
Building and Improvements	364,174
Acquired In-Place Leases(1)	64,217
Acquired Above-Market Leases(1)	21,055
Total Acquired Assets	509,756
Secured Notes Payable, Net(2)	229,539
Acquired Below-Market Leases(3)	5,549
Total Assumed Liabilities	235,088
Fair Value of Acquired Net Assets (Represents 100% Interest)	$	274,668
__________
-1	Represents in-place leases with a weighted average amortization period of 6.84 years and above-market leases with a weighted average amortization period of 7.81 years.
-2	Secured notes payable is presented net of a premium of $13.5 million.
-3	Represents below-market leases with a weighted average amortization period of 7.83 years.
The following table summarizes the results from continuing operations since the consolidation of the Duke Portfolio on March 1, 2013 through December 31, 2013 (in thousands). We previously included the results from operations of the Duke Portfolio in equity in earnings:
Revenues	$	50,142
Net income	$	1,612
Pro Forma Information (unaudited)
The following unaudited pro forma results assumes that the acquisitions of 445 Airtech Parkway, 1 Rocket Road, 1659 Sauget Business Blvd, 325 Center Point Blvd, 550 Oak Ridge Drive, 125 Capital Road and 14-46 Alberigi Drive ("2014 Acquisitions"), were completed as of January 1, 2013. Non-recurring acquisition costs totaling $2.3 million are excluded from the 2014 pro forma results and are included in the year ended December 31, 2013 as an operating expense. These pro forma results do not purport to be indicative of what operating results would have been had the acquisitions actually occurred on January 1, 2013 and may not be indicative of future operating results (in thousands, except share data):
	Year Ended December 31,
	2014				2013
Revenues	$	284,494			$	268,591
Net Operating Income	205,651				195,907
Net Income	24,637				86,291
Basic and Diluted Net Income per Share	$	0.1			$	0.35
Weighted Average Common Shares Outstanding - Basic and Diluted	236,866,656				242,379,680
The following unaudited pro forma results assumes that the 2014 Acquisitions were completed as of January 1, 2013 and that the acquisitions of Carpenter Corporate Center I & II and 1200 Woods Chapel Road and the remaining 20% equity interest in the Duke Portfolio ("2013 Acquisitions") were completed as of January 1, 2012. Non-recurring acquisition costs totaling $2.3 million are included in the year ended December 31, 2013 as an operating expense. Non-recurring acquisition costs totaling $2.7 million are excluded from the 2013 pro forma results and are included in the year ended December 31, 2012 as an operating expense. These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisitions actually occurred on January 1, 2013 and 2012 and may not be indicative of future operating results (in thousands, except share data):
	Year Ended December 31,
	2013				2012
Revenues	$	284,242			$	246,276
Net Operating Income	207,585				178,704
Net Income	19,621				30,970
Basic and Diluted Net Income per Share	$	0.08			$	0.12
Weighted Average Common Shares Outstanding - Basic and Diluted	242,379,680				248,154,277
Property Dispositions
The following table summarizes properties sold during the years ended December 31, 2014, 2013 and 2012 ($ in thousands):
Property		Market				Date of Disposition		Net Rentable Square Feet			Gross Sales			Property Type
											Price
2014 Dispositions
Maskew Retail Park		Peterborough		UK		7/23/14		144,400			$	62,978		Retail
12650 Ingenuity Drive		Orlando		FL		11/18/14		124,500			26,500			Office
Thames Valley Five		Reading		UK		11/24/14		40,468			18,781			Office
Deerfield Commons		Atlanta		GA		12/16/14		121,969			19,400			Office
Total 2014 Property Dispositions								431,337			$	127,659
2013 Dispositions
Albion Mills Retail Park		Wakefield		UK		11/29/13		55,294			$	17,253		Retail
Summit Distribution Center		Salt Lake City		UT		12/20/13		275,080			13,800			Industrial
Total 2013 Property Dispositions								330,374			$	31,053
2012 Dispositions
Cherokee Corporate Park (1)		Spartanburg		SC		7/9/12		60,000			$	3,125		Industrial
__________
-1	The Company recognized a loss from discontinued operatixons of $0.4 million in 2012 associated with a write-down of the property to its net sales value.
In connection with the Maskew Retail Park and Thames Valley Five dispositions, we had a gain of $13.2 million and $0.9 million, respectively, after closing and other transaction related costs. In addition, the 12650 Ingenuity Drive disposition resulted in a gain of $5.1 million and the Deerfield Commons disposition resulted in a gain of $5.6 million, after closing and other transaction related costs. In accordance with ASU 2013-05, we also recognized a CTA loss of $3.6 million related to the deregistration of Albion Mills Retail Park, which we disposed during 2013.
Discontinued Operations
Based on the early adoption of the new discontinued operations guidance ASU No. 2014-08, the sales of all properties during the year ended December 31, 2014 did not represent a strategic shift that has a major effect on the Company's operations and financial results. Accordingly, these properties remain classified within continuing operations for all periods presented. Prior to January 1, 2014, properties identified as held for sale and/or disposed of are presented in discontinued operations for all periods presented. The following table summarizes the income and expense components for 2013 and 2012 dispositions that comprise discontinued operations for the years ended December 31, 2013 and 2012 (in thousands):
	Year Ended December 31,
	2013				2012
Revenues:
Rental	$	1,755			$	2,311
Tenant Reimbursements	275				372
Total Revenues	2,030				2,683
Expenses:
Property Operating	248				338
Real Estate Taxes	197				133
Depreciation and Amortization	607				1,270
Total Expenses	1,052				1,741
Interest and Other (Expense) Income	(80		)		283
Interest Expense	(420		)		(505		)
Loss on Early Extinguishment of Debt	(96		)		—
Total Other Expenses	(596		)		(222		)
Income from Discontinued Operations	382				720
Gain (Loss) from Sale of Real Estate	2,759				(413		)
Total Income from Discontinued Operations	$	3,141			$	307
Impairment of Real Estate
The Company assesses on a regular basis whether there are any indicators that the carrying value of its real estate assets may be impaired. The impairment charges for assets not held for sale are calculated as the difference between the carrying value of the properties and the estimated fair value. During the year ended December 31, 2014, we recognized an impairment charge of $27.6 million in continuing operations related to our 70 Hudson Street property. The impairment charge resulted from a determination that the projected cash flows based upon the estimated holding period of the property was below the carrying amount of the property. Accordingly, we reduced the carrying value of this property to the property’s current estimated fair value of approximately $94.0 million. The property is encumbered by a $114.1 million non-recourse mortgage loan. No impairments of long-lived assets were recognized during the years ended December 31, 2013 and 2012.

Investments_in_Unconsolidated_

Investments in Unconsolidated Entities	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities
	As of December 31, 2014 and 2013, we owned the following number of properties through unconsolidated entities:
				Number of Properties
				December 31,
		Ownership %		2014		2013
	Duke JV	80.00%		14		18
	European JV	80.00%		9		9
	UK JV	80.00%		3		3
	CBRE Strategic Partners Asia	5.07%		3		3
				29		33
	Investments in unconsolidated entities at December 31, 2014 and 2013 consist of the following (in thousands):
		December 31,
		2014			2013
	Duke JV	$	239,376		$	292,548
	European JV	144,141			174,272
	UK JV	33,189			36,794
	Afton Ridge(1)	117			1,512
	CBRE Strategic Partners Asia	6,870			9,676
		$	423,693		$	514,802
	__________
	-1	Amount at December 31, 2013 represents cash and an escrow holdback at the joint venture. The Afton Ridge Shopping Center was sold during December 2013.
	The following is a summary of the investments in unconsolidated entities for the years ended December 31, 2014 and 2013 (in thousands):
		December 31,
		2014			2013
	Investment Balance, January 1,	$	514,802		$	515,829
	Contributions	7,625			210,745
	Company's Equity in Net Income (including adjustments for basis differences)	28,823			12,111
	Other Comprehensive Income of Unconsolidated Entities	(22,342		)	7,293
	Conversion of Duke JV Equity Investment to Controlling Interest	—			(139,558		)
	Distributions	(105,215		)	(91,618		)
	Investment Balance, December 31,	$	423,693		$	514,802
	Duke Joint Venture
	We entered into an operating agreement for the Duke JV with Duke Realty on June 12, 2008. Duke acts as the managing member of the Duke JV and is entitled to receive fees in connection with the services it provides to the Duke JV, including asset management, construction, development, leasing and property management services. Duke is also entitled to a promoted interest in the Duke JV. We have joint approval rights over all major policy decisions.
	On December 17, 2010, we entered into an amended and restated operating agreement for the Duke JV. The amended and restated operating agreement generally contains the same terms and conditions as the operating agreement dated June 12, 2008 described above, except for the following material changes: (i) Duke granted us a call option to acquire Duke's entire interest in the Duke JV which such interest shall be valued based on the opinions of qualified appraisers and which we can elect to exercise any time after June 30, 2012 upon the occurrence and adoption by resolution of certain triggering events and (ii) the Duke JV has certain rights to participate in the development of certain adjacent and nearby parcels of land currently owned by Duke.
	2013 Transactions
	On March 1, 2013, we acquired Duke's 20% interest in 17 properties that were held by Duke JV. See Note 3, Investment in Real Estate Activity, for a further discussion of this transaction.
	On July 2, 2013, we contributed $79.8 million to the Duke JV for our 80% share of the payoff (inclusive of accrued interest) of five fixed rate mortgage notes that were cross-collateralized and secured by the following five properties: Buckeye Logistics Center, Aspen Corporate Center 500, AllPoints at Anson Bldg. 1, 12200 President's Court, and 201 Sunrise Blvd. The notes were paid in full by the joint venture on July 3, 2013 for the total remaining principal balance of $99.2 million.
	On October 9, 2013, we contributed $40.7 million to the Duke JV for our 80% share of the payoff (inclusive of accrued interest) of two fixed rate mortgage notes that were collateralized and secured by AllPoints Midwest Bldg. 1 and 125 Enterprise Parkway. The notes were paid in full by the joint venture on October 11, 2013 for the total remaining principal balance of $50.8 million.
	On November 7, 2013, the Duke JV sold two office properties located in St. Louis, Missouri for approximately $39.2 million. In connection with the sale of the properties, the Duke JV incurred a loss of $0.5 million. Our pro rata share of the net proceeds of the sale following loan satisfaction and payment of customary closing expenses was approximately $11.0 million.
	2014 Transactions
	On January 16, 2014, the Duke JV sold an office property located in Chicago, Illinois for approximately $13.1 million, of which our pro rata share was approximately $10.5 million.
	On December 5, 2014, the Duke JV sold one office property located in Houston, Texas for approximately $32.8 million, of which our pro rata share was approximately $26.2 million.
	On December 8, 2014, the Duke JV sold two office properties located in Columbus, Ohio for approximately $25.9 million, of which our pro rata share was approximately $20.7 million.
	The following is the consolidated balance sheet of the Duke JV as of December 31, 2014 and 2013 (in thousands):
		December 31,
		2014			2013
	Assets
	Investments in Real Estate (1)	$	323,236		$	403,818
	Real Estate Investments and Other Assets Held-for-Sale	17,230			—
	Other Assets	32,474			52,085
	Total Assets	$	372,940		$	455,903
	Liabilities and Equity
	Liabilities Related to Real Estate Investments Held-for-Sale	$	11,048		$	—
	Secured Notes Payable, net	56,891			79,761
	Other Liabilities	6,344			11,055
	Total Liabilities	74,283			90,816
	CSP Equity	239,376			292,548
	Other Investors' Equity	59,281			72,539
	Total Liabilities and Equity	$	372,940		$	455,903
	__________
	-1	Includes REIT Basis Adjustments for costs incurred by the Company outside of the Duke JV that are directly capitalizable to its investment in real estate assets acquired, including acquisition costs paid to our former investment advisor prior to January 1, 2009.
	The following is the consolidated statements of operations of the Duke JV for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014			2013			2012
Total Revenue	$	57,877		$	67,500		$	125,333
Operating Expenses	17,572			20,698			42,102
Net Operating Income	40,305			46,802			83,231
Depreciation and Amortization	26,352			30,568			59,663
Interest Expense	4,098			10,500			24,551
Gain on Sale of Real Estate	17,033			—			—
Loss on Extinguishment of Debt	(1,723		)	—			—
Income (Loss) from Continuing Operations	25,165			5,734			(983		)
Gain (Loss) from Discontinued Operations	18			(841		)	—
Net Income (Loss)	25,183			4,893			(983		)
Company Share in Net Income	20,147			3,914			(786		)
Adjustments for REIT basis	(139		)	448			(110		)
CSP Equity in Net Income	$	20,008		$	4,362		$	(896	)
UK JV and European JV
On June 10, 2010, we entered into two joint ventures with subsidiaries of the Goodman Group (ASX: GMG), ("Goodman"), one of which invests in logistics focused warehouse/distribution/logistics properties in the United Kingdom, (the "UK JV"), and the other of which invests in logistics focused warehouse/distribution/logistics properties in France, Belgium, the Netherlands, Luxembourg and Germany, (the "European JV"). We own an 80% interest in each joint venture and Goodman owns a 20% interest in each joint venture. The UK and European JVs pay certain fees to certain Goodman subsidiaries in connection with the services they provide to the UK and European JVs, including but not limited to investment advisory, development management and property management services. Goodman may also be entitled to a promote interest in the UK and European JVs.
UK JV
The shareholders' agreement pertaining to the UK JV is by and among RT Princeton UK Holdings, LLC (our wholly-owned subsidiary), Goodman Jersey Holding Trust and Goodman Princeton Holdings (Jersey) Limited, the UK JV, for the purpose of acquiring and holding, either directly or indirectly, up to £400.0 million in logistics focused warehouse/distribution/logistics properties.
During the investment period, the UK JV has a right of first offer, with respect to certain logistics development or logistics investment assets considered for investment in the UK by Goodman or us. If a deadlock has arisen pertaining to a major decision regarding a specific property, either shareholder may exercise a buy-sell option in relation to the relevant property. After the initial investment period, either shareholder wishing to exit the UK JV may exercise a buy-sell option with respect to their entire interest in the UK JV.
European JV
The shareholders' agreement pertaining to the European JV is by and among RT Princeton CE Holdings, LLC (our wholly-owned subsidiary), Goodman Europe Development Trust acting by its trustee Goodman Europe Development Pty Ltd. and Goodman Princeton Holdings (LUX) S.À.R.L., the European JV, for the purpose of acquiring and holding, either directly or indirectly, up to €400.0 million in logistics focused warehouse/distribution/logistics properties.
During the investment period, the European JV has a right of second offer (after another investment vehicle managed by Goodman) with respect to certain logistics development or logistics investment assets considered for investment by Goodman, and has a right of first offer with respect to certain logistics development or logistics investment assets considered for investment by us. If a deadlock has arisen pertaining to a major decision regarding a specific property, either shareholder may exercise a buy-sell option in relation to the relevant property. After the initial investment period, either shareholder wishing to exit the European JV may exercise a buy-sell option with respect to their entire interest in the European JV.
2013 Transactions
On November 26, 2013, the European JV completed the acquisitions of Hansalinie Distribution Center in Breman, Germany and Bodenheim Logistikzentrum in Frankfurt, Germany for approximately $62.0 million, exclusive of customary closing costs. The European JV partially funded the acquisition with a $25.4 million note payable secured by the new properties. We funded our pro rata share of the remaining purchase price using borrowings under our unsecured revolving credit facility.
On December 17, 2013, the European JV completed the acquisition of Lille-Douai Distribution Center, located in Lille, France for approximately $70.5 million, exclusive of customary closing costs. The European JV partially funded the acquisition with a $28.3 million note payable secured by the new property. We funded our pro rata share of the remaining purchase price using borrowings under our unsecured revolving credit facility.
The following is the consolidated balance sheet of the European JV as of December 31, 2014 and 2013 (in thousands):
	December 31,
	2014			2013
Assets
Investments in Real Estate(1)(2)	$	274,128		$	311,205
Other Assets(2)	49,435			71,713
Total Assets	$	323,563		$	382,918
Liabilities and Equity
Secured Notes Payable, net	$	135,173		$	153,651
Other Liabilities(1)	8,214			11,427
Total Liabilities	143,387			165,078
CSP Equity	144,141			174,272
Other Investors' Equity	36,035			43,568
Total Liabilities and Equity	$	323,563		$	382,918
__________
-1	Effective 2013, the intangible liabilities, which was formerly included in Investment in Real Estate has been reclassified into Other Liabilities. Amount reclassified was $3.4 million in 2013 and $2.5 million in 2014.
-2	Effective 2013, the Deferred Leasing Assets, which was formerly included in Investment in Real Estate has been reclassified into Other Assets. The amount reclassified was $35.9 million in 2013 and $27.1 million in 2014.
The following is the consolidated statements of operations of the European JV for the years ended December 31, 2014, 2013 and 2012 (in thousands):
	Year Ended December 31,
	2014			2013			2012
Total Revenue	$	29,322		$	19,581		$	11,947
Operating Expenses	3,510			3,631			1,824
Net Operating Income	25,812			15,950			10,123
Acquisition and Related Expense	—			4,778			39
Depreciation and Amortization	12,100			7,636			5,388
Interest Expense	4,502			2,400			462
Net Income	9,210			1,136			4,234
CSP Equity in Net Income	$	7,367		$	909		$	3,387
Afton Ridge Joint Venture
On September 18, 2008, we acquired a 90% ownership interest in Afton Ridge Joint Venture, LLC, or Afton Ridge, the owner of Afton Ridge Shopping Center, from unrelated third parties. CK Afton Ridge Shopping Center, LLC, a subsidiary of Childress Klein Properties, Inc., or CK Afton Ridge, retained a 10% ownership interest in Afton Ridge and continued to manage Afton Ridge Shopping Center. In connection with the services it provided, CK Afton Ridge received fees, including management, construction management and property management fees.
On July 2, 2013, we contributed $25.5 million to Afton Ridge to pay off the mortgage note secured by the property. The note was paid in full by the joint venture on July 3, 2013. Our joint venture partner reimbursed their portion of the loan payoff totaling $2.6 million upon sale of the property.
On December 11, 2013, the Afton Ridge Shopping Center was sold to an unaffiliated third party for $46.3 million. Our pro rata share of the net proceeds of the sale following payment of customary closing expenses was approximately $40.0 million.
CBRE Strategic Partners Asia
We have agreed to a capital commitment of up to $20.0 million in CBRE Strategic Partners Asia. As of December 31, 2014, we had funded approximately $17.5 million of our capital commitment and owned an ownership interest of approximately 5.07% in CBRE Strategic Partners Asia. CBRE Strategic Partners Asia was formed to purchase, reposition, develop, hold for investment and sell institutional quality real estate and related assets in targeted markets in Asia, including China, Japan, India, South Korea, Hong Kong, Singapore and other Asia Pacific markets. CBRE Strategic Partners Asia has an eight-year term (which began on January 31, 2008), which may be extended for up to two one-year periods with the approval of two-thirds of the limited partners.
CBRE Strategic Partners Asia is managed by CBRE Investors SP Asia II, LLC, or the Investment Manager, an affiliate of CBRE Global Investors. The Investment Manager is entitled to an annual management fee and acquisition fees. Our share of investment management fees paid to the Investment Manager was approximately $97,000, $111,000 and $144,000, for the years ended December 31, 2014, 2013 and 2012, respectively. Our share of acquisition fees paid to the Investment Manager was $49,000 for the year ended December 31, 2013. No acquisition fees were paid to the Investment Manager during the years ended December 31, 2014 and 2012.
CBRE Strategic Partners Asia is not obligated to redeem the interests of any of its investors, including us, prior to 2017. Except in certain limited circumstances such as transfers to affiliates or successor trustees or state agencies, we will not be permitted to sell our interest in CBRE Strategic Partners Asia without the prior written consent of the general partner, which the general partner may withhold in its sole discretion.
During the first quarter of 2013, five ownership interests in Japan that were owned by CBRE Strategic Partners Asia, were sold. During the second quarter of 2013, CBRE Strategic Partners Asia purchased one ownership interest in China.
On August 15, 2014, CBRE Strategic Partners Asia sold five floors at the Kowloon Commerce Center in Hong Kong for approximately $74.6 million, of which our pro rata share was approximately $1.9 million.
The following is the combined balance sheets of our investments in unconsolidated entities as of December 31, 2014 and 2013 (in thousands):
	December 31,
	2014			2013
Assets
Investments in Real Estate (1)(2)(3)	$	783,724		$	955,899
Real Estate Investments and Other Assets Held-for-Sale	17,230			—
Other Assets(3)	93,462			142,816
Total Assets	$	894,416		$	1,098,715
Liabilities and Equity
Liabilities Related to Real Estate Investments Held-for-Sale	$	11,048		$	—
Secured Notes Payable, Net	192,064			233,412
Other Liabilities(2)	31,651			40,439
Total Liabilities	234,763			273,851
CSP Equity	423,693			514,801
Other Investors' Equity	235,960			310,063
Total Liabilities and Equity	$	894,416		$	1,098,715
__________
-1	Includes REIT Basis Adjustments for costs incurred by the Company outside of the Duke JV that are directly capitalizable to its investment in real estate assets acquired, including acquisition costs paid to our former investment advisor prior to January 1, 2009.
-2	Effective 2013, the intangible liabilities, which was formerly included in Investment in Real Estate has been reclassified into Other Liabilities. Amount reclassified for the European JV was $3.4 million in 2013 and $2.5 million in 2014. Amount reclassified for the UK JV was $0.8 million in 2013 and $0.5 million in 2014.
-3	Effective 2013, the Deferred Leasing Assets, which was formerly included in Investment in Real Estate has been reclassified into Other Assets. For the European JV, amount reclassified was $35.9 million in 2013 and $27.1 million in 2014. For the UK JV, amount reclassified was $3.3 million in 2013 and $2.1 million in 2014.
The combined statements of operations for our investments in unconsolidated entities for the years ended December 31, 2014, 2013 and 2012 are as follows (in thousands):
	Year Ended December 31,
	2014			2013			2012
Total Revenue	$	89,670		$	131,166		$	153,131
Operating Expenses	24,069			29,917			50,204
Net Operating Income	65,601			101,249			102,927
Acquisition and Related Expense	—			4,778			686
Depreciation and Amortization	40,538			41,457			68,714
Interest Expense	8,600			13,673			26,516
Gain from Sales of Real Estate	17,033			3,628			—
Loss on Extinguishment of Debt	(1,723		)	—			—
Income from Continuing Operations	31,773			44,969			7,011
Gain (Loss) from Discontinued Operations	18			(841		)	—
Net Income	31,791			44,128			7,011
Company Share in Net Income	28,962			12,228			4,088
Adjustments for REIT basis	(139		)	(117		)	(129		)
CSP Equity in Net Income	$	28,823		$	12,111		$	3,959

Deferred_Leasing_Costs_and_Int

Deferred Leasing Costs and Intangible Assets and Liabilities	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Deferred Leasing Costs and Intangible Assets and Liabilities	Deferred Leasing Costs and Intangible Assets and Liabilities
	The following table summarizes our deferred leasing costs and intangible assets, including acquired above-market leases, acquired in-place leases and other intangible assets and intangible liabilities, including acquired below-market leases and acquired above-market ground lease obligations (in thousands):
		December 31,
		2014			2013
	Deferred Leasing Costs and Intangible Assets, Net:
	Deferred Leasing Costs	$	22,481		$	11,243
	Accumulated Amortization	(4,218		)	(3,016		)
	Deferred Leasing Costs, Net	18,263			8,227
	Above-Market Leases	63,566			77,180
	Accumulated Amortization	(30,311		)	(33,577		)
	Above-Market Leases, Net	33,255			43,603
	In-Place Leases	300,124			321,776
	Accumulated Amortization	(132,414		)	(124,734		)
	In-Place Leases, Net	167,710			197,042
	Other Intangible Assets	1,425			—
	Accumulated Amortization	(163		)	—
	Other Intangible Assets, Net	1,262			—
	Total Deferred Leasing Costs and Intangible Assets, Net	$	220,490		$	248,872
	Intangible Liabilities, Net:
	Below-Market Leases	$	51,653		$	49,751
	Accumulated Amortization	(26,675		)	(23,022		)
	Below-Market Leases, Net	24,978			26,729
	Above-Market Ground Lease Obligation	1,501			1,501
	Accumulated Amortization	(231		)	(160		)
	Above-Market Ground Lease Obligation, Net	1,270			1,341
	Total Intangible Liabilities, Net	$	26,248		$	28,070
	The following table sets forth amortization related to intangible assets and liabilities for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014			2013			2012
	Deferred Leasing Costs(1)	$	1,731		$	1,314		$	714
	Above-Market Leases(2)	9,498			10,374			7,658
	In-Place Leases(1)	37,222			36,653			28,826
	Other Intangible Assets(1)	163			—			—
	Below-Market Leases(2)	(4,206		)	(3,972		)	(5,173		)
	Above-Market Ground Lease Obligation(3)	(71		)	(71		)	(71		)
	__________
	-1	The amortization of deferred leasing costs, in-place leases, and other intangible assets are recorded to depreciation and amortization expense in the condensed consolidated statements of operations for the periods presented.
	-2	The amortization of above-market leases and below-market leases are recorded as reductions and additions to rental income, respectively, in the condensed consolidated statements of operations for the periods presented.
	-3	The amortization of the above-market ground lease obligation is recorded as a decrease to property operating expense in the condensed consolidated statements of operations for the periods presented.
	The following is a schedule of future amortization of deferred leasing costs, intangible assets and liabilities as of December 31, 2014 (in thousands):
		Intangible Assets											Intangible Liabilities
		Deferred Leasing			Acquired			Acquired			Other		Acquired		Above-
		Costs			Above-			In-Place			Intangible		Below-		Market
					Market			Leases			Assets		Market		Ground Lease
					Leases								Leases		Obligations
	2015	$	1,794		$	8,464		$	36,606		$	144	$	4,558	$	71
	2016	1,644			5,557			29,727			144		3,590		71
	2017	1,497			4,466			25,254			144		3,098		71
	2018	1,446			3,862			21,050			144		2,825		71
	2019	1,299			3,300			17,284			144		2,604		71
	Thereafter	10,583			7,606			37,789			542		8,303		915
		$	18,263		$	33,255		$	167,710		$	1,262	$	24,978	$	1,270

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	Debt
	Secured notes payable are summarized as follows (in thousands):
	Property		Stated		Effective Interest Rate(1)		Maturity Date		Outstanding Balance
			Interest Rate						December 31,
									2014			2013
	One Wayside Road(2)		5.66%		5.25%		8/1/15		$	12,938		$	13,352
	One Wayside Road(2)		5.92%		5.25%		8/1/15		10,854			11,169
	Lakeside Office Center		6.03%		6.03%		9/1/15		8,617			8,743
	Celebration Office Center III(3)		4.25%		2.50%		12/1/15		8,817			8,998
	22535 Colonial Pkwy(3)		4.25%		2.50%		12/1/15		7,889			8,051
	Northpoint III(3)		4.25%		2.50%		12/1/15		10,209			10,419
	Goodyear Crossing II(3)		4.25%		2.50%		12/1/15		19,489			19,891
	3900 North Paramount Parkway(3)		4.25%		2.50%		12/1/15		7,656			7,815
	3900 South Paramount Parkway(3)		4.25%		2.50%		12/1/15		7,656			7,815
	1400 Perimeter Park Drive(3)		4.25%		2.50%		12/1/15		2,320			2,368
	Miramar I(3)		4.25%		2.50%		12/1/15		9,095			9,283
	Miramar II(3)		4.25%		2.50%		12/1/15		12,250			12,503
	70 Hudson Street		5.65%		5.15%		4/11/16		114,108			116,100
	Point West I - Swapped to Fixed		3.41%		3.41%		12/6/16		10,716			11,041
	100 Tice Blvd		5.97%		4.38%		9/15/17		18,960			19,544
	100 Tice Blvd		5.97%		4.38%		9/15/17		18,960			19,543
	4701 Gold Spike Drive(4)		4.45%		4.45%		3/1/18		9,958			10,154
	1985 International Way(4)		4.45%		4.45%		3/1/18		6,920			7,055
	3660 Deerpark Boulevard(4)		4.45%		4.45%		3/1/18		7,153			7,294
	Tolleson Commerce Park II(4)		4.45%		4.45%		3/1/18		4,301			4,386
	20000 S. Diamond Lake Road(4)		4.45%		4.45%		3/1/18		6,265			6,388
	Atrium I - swapped to fixed		3.78%		3.78%		5/31/18		21,580			22,516
	McAuley Place		3.98%		3.50%		9/1/18		12,865			13,230
	Easton III - Swapped to Fixed		3.95%		3.95%		1/31/19		6,280			6,466
	90 Hudson Street		5.66%		5.26%		5/1/19		103,301			104,928
	Fairforest Bldg. 6		5.42%		6.50%		6/1/19		1,751			2,086
	North Rhett I		5.65%		6.50%		8/1/19		1,958			2,405
	Kings Mountain II		5.47%		6.50%		1/1/20		3,467			4,043
	1 Rocket Road		6.60%		4.50%		8/1/20		18,516			—
	North Rhett II		5.20%		6.50%		10/1/20		1,425			1,628
	Mount Holly Bldg.		5.20%		6.50%		10/1/20		1,425			1,628
	Orangeburg Park Bldg.		5.20%		6.50%		10/1/20		1,449			1,656
	Kings Mountain I		5.27%		6.50%		10/1/20		1,235			1,411
	Ten Parkway North		4.75%		4.75%		1/1/21		11,469			11,777
	Union Cross Bldg. II		5.53%		6.50%		6/1/21		5,755			6,471
	Union Cross Bldg. I		5.50%		6.50%		7/1/21		1,892			2,124
	Property		Stated		Effective Interest Rate(1)		Maturity Date		Outstanding Balance
			Interest Rate						December 31,
									2014			2013
	Norman Pointe I		5.24%		3.50%		10/1/21		20,177			20,512
	Norman Pointe II		5.24%		3.50%		10/1/21		22,214			22,583
	The Landings I		5.24%		3.50%		10/1/21		15,185			15,437
	The Landings II		5.24%		3.50%		10/1/21		13,393			13,616
	Fairforest Bldg. 5		6.33%		6.50%		2/1/24		7,678			8,277
	North Rhett IV		5.80%		6.50%		2/1/25		7,862			8,414
	Avion Midrise III & IV(5)		5.52%		7.00%		4/1/14		—			19,979
	Maskew Retail Park - Swapped to Fixed(6)		5.68%		5.68%		8/10/14		—			23,161
	12650 Ingenuity Drive(7)		5.62%		7.50%		10/1/14		—			11,842
	Bolingbrook Point III(8)		5.26%		5.26%		1/1/15		—			7,900
	Deerfield Commons I(9)		5.23%		5.23%		12/1/15		—			9,290
	Total Secured Notes Payable								596,008			665,292
	Plus Premium								15,494			17,294
	Less Discount								(894		)	(1,386		)
	Total Secured Notes Payable, Net								$	610,608		$	681,200
	__________
	-1	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the amortization of any discounts/premiums, excluding debt issuance costs.
	-2	This loan was paid off in full on February 2, 2015 prior to the maturity date.
	-3	These nine loans are cross-collateralized.
	-4	These five loans are cross-collateralized.
-5	This loan was paid off in full on January 2, 2014 prior to the maturity date.
-6	This loan was paid off in full on July 23, 2014 prior to the maturity date.
-7	This loan was paid off in full on July 1, 2014 prior to the maturity date.
-8	This loan was paid off in full on November 6, 2014 prior to the maturity date.
-9	This loan was paid off in full on December 16, 2014 prior to the maturity date.
Unsecured Term Loan Facilities
The terms of our Unsecured Term Loan Facilities and outstanding balances as of December 31, 2014 and December 31, 2013 are set forth in the table below (in thousands):
Term Loan Facility		Unswapped Interest Rate		Effective Interest Rate(1)		Maturity Date		Outstanding Balance
								December 31,
								2014			2013
WF Term Loan #2(2)		LIBOR + 1.50%		2.49%		3/7/18		$	200,000		$	200,000
WF Term Loan #3(2)		LIBOR + 1.50%		3.12%		1/15/19		200,000			200,000
TD Term Loan(3)		LIBOR + 1.75%		3.28%		3/6/20		50,000			50,000
Capital One Term Loan(2)		LIBOR + 1.75%		4.32%		1/31/21		120,000			120,000
Total Unsecured Term Loan Facilities								$	570,000		$	570,000
__________
-1	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the effect of the interest rate swaps, excluding debt issuance costs.
-2	As of December 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.156% and 0.165%, respectively, for these loans.
-3	As of December 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.155% and 0.16875%, respectively, for this loan.
Unsecured Revolving Credit Facility
The terms of our unsecured revolving credit facility and outstanding balance are set forth in the table below (thousands):
	December 31,
	2014				2013
Outstanding Borrowings	$	200,044			$	170,044
Remaining Borrowing Capacity	649,956				679,956
Total Borrowing Capacity	$	850,000			$	850,000
Interest Rate(1)	1.46		%		1.47		%
Facility Fee(2)	30 bps				30 bps
Maturity Date(3)	15-Jan-18				15-Jan-18
__________
-1	Calculated based on one-month LIBOR plus 1.30% as of December 31, 2014 and December 31, 2013.
-2	The facility fee is based on the unsecured revolving credit facility's total borrowing capacity.
-3	We may exercise an option to extend the maturity date by one year.
Debt Covenants and Restrictions
Certain of our secured notes payable are subject to certain financial covenants (interest coverage and loan to value).
As of December 31, 2014, our unsecured term loan facilities and revolving credit facility were subject to certain financial covenants that require, among other things: the maintenance of (i) a leverage ratio of not more than 0.60; (ii) a fixed charge coverage ratio of at least 1.50; (iii) a secured leverage ratio of not more than (a) 0.45 prior to September 30, 2014 for the Capital One Term Loan, March 6, 2015 for WF Term Loan #2, WF Term Loan #3, and unsecured revolving credit facility, or September 26, 2015 for the TD Term Loan, or (b) 0.40 thereafter; (iv) an unencumbered leverage ratio of not more than 0.60; (v) an unencumbered interest-service coverage ratio of at least 1.75; (vi) minimum tangible net worth of $1.5 billion plus 85% of the net proceeds of certain future equity issuances; and (vii) unencumbered asset value of at least $400.0 million. In addition, our unsecured term loan facilities and revolving credit facility contain a number of customary non-financial covenants including those restricting liens, mergers, sales of assets, certain investments in unimproved land and mortgage receivables, intercompany transfers, transactions with affiliates and distributions. The Company and certain of its subsidiaries have provided guarantees in connection with our unsecured term loan facilities and revolving credit facility. As of December 31, 2014, we were in compliance with all financial debt covenants.
The minimum principal payments due for our secured notes payable, unsecured term loan facilities and unsecured revolving credit facility are as follows as of December 31, 2014 (in thousands):
2015	$	131,718
2016	134,612
2017	46,822
2018	472,613
2019	308,768
Thereafter	271,519
	$	1,366,052

Risk_Management_and_Use_of_Fin

Risk Management and Use of Financial Instruments	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Risk Management and Use of Financial Instruments	Risk Management and Use of Financial Instruments
	Risk Management
	In the course of our ongoing business operations, we encounter economic risk. There are three main components of economic risk: interest rate risk, credit risk and market risk. We are subject to interest rate risk on our interest-bearing liabilities. Credit risk is primarily the risk of inability or unwillingness of tenants to make contractually required payments and of counterparties on derivatives contracts to fulfill their obligations. Market risk is the risk of declines in the value of our properties due to changes in rental rates, interest rates, supply and demand of similar products and other market factors affecting the valuation of properties.
	Derivative Financial Instruments
	We utilize interest rate swaps to mitigate the effects of interest rate fluctuations on our variable-rate loans. Our strategy is to use a swap to convert the floating-rate borrowing (usually a secured note payable or an unsecured term loan facility) where LIBOR is consistently applied into a fixed-rate obligation with the only variable piece remaining is the spread between different reset dates when/if the swap and debt are not lined up. We generally enter into an interest rate swap agreement concurrently with the origination of the variable-rate loan for an equivalent principal amount for a period covering the term of the loan, which effectively converts our variable-rate debt to a fixed-rate loan. Our use of derivative instruments, including swaps, is limited by policy to hedging or mitigating commercial risk and we do not use derivative instruments for speculative, trading or investment purposes.
	The following table sets forth the terms of our interest rate swaps at December 31, 2014 and 2013 (amounts in thousands):
		Notional Amount								Fair Value						Rate
	Type of Instrument	December 31, 2014				December 31, 2013				December 31, 2014			December 31, 2013			December 31, 2014		December 31, 2013		Index	Maturity Date
	Interest Rate Swap(1)	$	10,716			$	11,041			$	(135	)	$	(205	)	1.3	%	1.2	%	LIBOR	12/6/16
	Interest Rate Swap(2)	200,000				200,000				1,467			2,854			0.8	%	0.8	%	LIBOR	3/7/18
	Interest Rate Swap(1)	21,580				22,516				(354		)	(361		)	1.6	%	1.6	%	LIBOR	5/31/18
	Interest Rate Swap	200,000				200,000				(1,540		)	667			1.5	%	1.4	%	LIBOR	1/15/19
	Interest Rate Swap(1)	6,280				6,466				(127		)	(86		)	1.8	%	1.8	%	LIBOR	1/31/19
	Interest Rate Swap(2)	50,000				50,000				266			1,690			1.4	%	1.3	%	LIBOR	3/6/20
	Interest Rate Swap	120,000				120,000				(5,543		)	(1,515		)	2.4	%	2.4	%	LIBOR	1/31/21
	Interest Rate Swap(3)	—				23,161				—			(398		)	—		2.9	%	GBP LIBOR	8/10/14
	__________
	-1	We assumed this swap in connection with the purchase of the Duke Portfolio on March 1, 2013. This swap was designated as a hedging instrument under ASC 815-20 as of December 31, 2013. The swap was not designated as a hedging instrument under ASC 815-20 during the period from March 1, 2013 to March 31, 2013.
	-2	We entered into these swaps in connection with the origination of the TD Term Loan and WF Term Loan #1 in March 2013. These swaps were designated as hedging instruments under ASC 815-20 as of December 31, 2013. These swaps were not designated as a hedging instruments under ASC 815-20 during the period from March 11, 2013 and March 12, 2013, respectively, to May 29, 2013.
	-3	In connection with the Maskew Retail Park sale we paid off the secured debt with an outstanding principal of $23.8 million and terminated the related swap prior to the maturity date.
	We record all derivative instruments on a gross basis in the condensed consolidated balance sheets. Accordingly, there are no offsetting amounts that net assets against liabilities. The asset and liability balances presented in the table below reflects the gross amounts of derivatives recorded in the consolidated balance sheets (in thousands):
		Asset Derivatives										Liability Derivatives
				Fair value									Fair value
	Type of Instrument	Balance Sheet Location		December 31, 2014				December 31, 2013				Balance Sheet Location	December 31, 2014			December 31, 2013
	Derivatives designated as hedging instruments
	Interest Rate Swaps	Prepaid Expenses and Other Assets		$	1,733			$	5,211			Accounts Payable, Accrued Expenses and Other Liabilities	$	7,699		$	2,565
	The table below presents the effect of our derivative instruments on our consolidated statement of operations and consolidated statement of
	comprehensive income for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014				2013				2012
	Derivatives Designated as Cash Flow Hedges:
	Loss Recognized in Other Comprehensive Income (OCI) (Effective Portion)	$	(17,851	)		$	(116	)		$	(7,024	)
	Loss Reclassified from AOCI into Interest Expense (Effective Portion)	(9,169		)		(4,054		)		(4,267		)
	Net Change in Fair Value of Derivative Financial Instruments (Ineffective Portion and Amount Excluded from Effectiveness Testing)	71				38				17
	Loss on Swap Termination Recognized in Loss from Early Extinguishment of Debt	—				—				(14,306		)
	Derivatives Not Designated as Cash Flow Hedges:
	Realized and Unrealized Gain Recognized in Net Change in Fair Value of Non-Qualifying Interest Rate Swaps	$	—			$	1,772			$	564
	Net Settlement Payments from Non-Qualifying Interest Rate Swaps	—				(1,158		)		(682		)
	Loss Reclassified from AOCI into Gain on Conversion of Equity Interest to Controlling Interest	—				(1,414		)		—
	At December 31, 2014, the Company expects that the hedged forecasted transactions, for each of the outstanding qualifying cash flow hedging relationships, remains probable of occurring. During the next twelve months we anticipate reclassifying $7.6 million of amounts currently recorded in accumulated other comprehensive income to earnings.
	Concentration of Credit Risk
	Our credit risk relates primarily to cash, restricted cash, and interest rate swap agreements. Cash accounts at each U.S. institution are insured by the Federal Deposit Insurance Corporation up to $250,000 through December 31, 2014.
	We have not experienced any losses to date on our invested cash and restricted cash. The interest rate swap agreements create credit risk. Credit risk arises from the potential failure of counterparties to perform in accordance with the terms of their contracts. Our risk management policies define parameters of acceptable market risk and limit exposure to credit risk. Credit exposure resulting from derivative financial instruments is represented by their fair value amounts, increased by an estimate of potential adverse position exposure arising from changes over time in interest rates, maturities, and other relevant factors. We do not anticipate nonperformance by any of our counterparties.
	Our consolidated properties are located throughout the United States and in the United Kingdom. The ability of the tenants to honor the terms of their respective leases is dependent upon the economic, regulatory, and social factors affecting the communities in which the tenants operate. In addition, we do not have any tenant whose rents exceeds 10% of our total rental revenue.

Future_Minimum_Rents

Future Minimum Rents	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Future Minimum Rents	Future Minimum Rents
	The following is a schedule of future minimum rents to be received on non-cancelable operating leases from consolidated properties as of December 31, 2014 (in thousands):
	2015	$	214,235
	2016	195,024
	2017	182,642
	2018	166,208
	2019	147,567
	Thereafter	456,763
		$	1,362,439

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions
	Prior to July 1, 2012, all of our business activities were managed by the former investment advisor pursuant to the fourth amended and restated advisory agreement ("Fourth Amended Advisory Agreement"), which terminated according to its terms on June 30, 2012. Effective July 1, 2012, we entered into the Transitional Services Agreement with the former investment advisor pursuant to which the former investment advisor would provide certain consulting related services to us at the direction of our officers and other personnel for a term which ended on April 30, 2013. As part of the Transitional Services Agreement, we paid $2.5 million on the effective date of the agreement to reimburse the former investment advisor for expenses incurred related to personnel costs. In addition, during 2013, we paid $0.7 million to the former investment advisor as a final settlement of the Transitional Services Agreement.
	Pursuant to the Transitional Services Agreement, for services provided to us in connection with the investment management of our assets, the former investment advisor was paid an investment management consulting fee payable in cash consisting of (i) a monthly fee equal to one-twelfth of 0.5% of the aggregate cost (before non-cash reserves and depreciation) of all real estate investments within our portfolio and (ii) a monthly fee equal to 5.0% of the aggregate monthly net operating income derived from all real estate investments within our portfolio, subject to certain adjustments. For services provided to us in connection with the acquisition of assets, the former investment advisor or its affiliates was paid acquisition fees up to 1.5% of (i) the contract purchase price of real estate investments acquired by us, or (ii) when we make an investment indirectly through another entity, such investment's pro rata share of the gross asset value of real estate investments held by that entity. The total of all acquisition consulting fees payable with respect to real estate investments did not exceed an amount equal to 6% of the contract purchase price (or 6% of funds advanced with respect to mortgages) provided, however, that a majority of the uninterested members of the Board of Trustees could approve amounts in excess of this limit.
	As required by the Transitional Services Agreement, we and the former investment advisor have agreed on a list of unacquired real estate investments for which the former investment advisor has performed certain acquisition related consulting services prior to the termination of the Transitional Service Agreement (a "Qualifying Property"). If any Qualifying Property is acquired by us within the nine months following the termination of the Transitional Services Agreement then we shall pay an acquisition consulting fee equal to 0.75% of (i) the contract purchase price of the real estate investments (including debt), or (ii) when we make an investment indirectly through another entity, such investment's pro rata share of the gross asset value of real estate investments held by that entity to the former investment advisor.
	During the year ended December 31, 2014, we acquired one Qualifying Property and paid the former investment advisor $0.2 million in acquisition consulting fees. There are no further Qualifying Properties under the Transitional Services Agreement and we do not anticipate paying the former investment advisor any further acquisition consulting fees.
	Previously, pursuant to the Fourth Amended Advisory Agreement and the Transitional Services Agreement, the former investment advisor and its affiliates performed services relating to property management, leasing, construction supervision and management, and brokerage services. The various fees paid to the former investment advisor are summarized in the table below for the years ended December 31, 2013 and 2012 (in thousands):
			Year Ended
			December 31,
			2013		2012
	Investment Management Fees		$	489	$	29,695
	Transition Services Agreement Fees		686		2,500
	Acquisition-Related Fees		1,895		5,159
	Property Management Fees (1)		1,128		1,556
	Leasing Commissions (1)		836		876
	Construction Supervision and Management Fees (1)		873		1,049
	Brokerage Fees		585		388
	Mortgage Banking Fees and Other		—		26
	Total		$	6,492	$	41,249
	__________
	-1	Such fees for each service ranged from 2.0% to 5.0% of gross revenues received from a property that we owned.
	At December 31, 2013, $0.6 million of amounts due to the former investment advisor for third party management fees was included in accounts payable, accrued expenses and other liabilities in the accompanying consolidated balance sheets. At December 31, 2012, $11.1 million of amounts due to the former investment advisor was included in accounts payable, accrued expenses and other liabilities in the accompanying consolidated balance sheets.

Equity_Incentive_Plan_and_Perf

Equity Incentive Plan and Performance Bonus Plan	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Incentive Plan and Performance Bonus Plan	Equity Incentive Plan and Performance Bonus Plan
	Equity Incentive Plan
	At our annual shareholders' meeting held on May 31, 2013, our shareholders approved the 2013 equity incentive plan. Our key employees, directors, trustees, officers, advisors, consultants or other personnel of ours and our subsidiaries or other persons expected to provide significant services to us or our subsidiaries would be eligible to be granted incentive share options, non-qualified share options, share appreciation rights, restricted shares, restricted share units, dividend equivalent rights and other equity-based awards as contemplated in the 2013 equity incentive plan. As of December 31, 2014, there were 4,045,493 common shares available for grant under the 2013 equity incentive plan.
	2014 Awards
	On January 29, 2014, our Board's independent trustees, Messrs. Charles Black, Mark Brugger, James Francis, James Orphanides and Louis Salvatore, were awarded equity grants under the 2013 equity incentive plan on the following terms: (i) (x) Mr. Black's award was for 20,000 common shares, (y) Messrs. Orphanides and Salvatore each were awarded 5,000 common shares and (z) Messrs. Brugger and Francis each were awarded 1,550 common shares for a total of 33,100 and (ii) each award vested in its entirety, upon issuance. We recorded compensation expense based upon the $7.87 price per share on January 29, 2014.
	On February 26, 2014, the Company and Operating Partnership entered into an amendment to Martin A. Reid's employment agreement, effective as of January 1, 2013, increasing Mr. Reid's annual target Long Term Incentive Award to 90,000 restricted common shares of the Company.
	On March 15, 2014, a total of 401,875 restricted common shares were granted to our named executive officers (Messrs. Cuneo, Kianka and Reid) based on each executive's achievement of performance objectives during 2013, as determined at the discretion of our Compensation Committee. Additionally, 25 of our employees were granted 143,450 restricted common shares, in the aggregate, on March 15, 2014. One-third of the restricted shares granted to our named executive officers and employees will vest on each of the first three anniversaries of grant if the grantee is employed by the Company on such anniversary. We recorded compensation expense based upon the $7.74 price per share on March 15, 2014. Compensation expense is recognized on a straight-line basis over the service vesting period of three years. We recognized share-based compensation expense of $1.9 million during the year ended December 31, 2014 as a result of granting the awards to our named executive officers and our employees.
	On July 31, 2014, the Compensation Committee of the Board of Trustees (the "Compensation Committee") of the Company adopted and approved an incentive bonus plan, a form of restricted share award agreement, and a form of restricted share unit award agreement that may be used in connection with awards made pursuant to the 2013 equity incentive plan from time to time to the Company’s trustees, executive officers and other employees.
	The incentive bonus plan is intended to provide additional incentive for key employees of the Company to perform to the best of our abilities, to further the growth, development and financial success of the Company, and to enable us to attract and retain qualified and talented individuals. Restricted shares are awarded to grantees based on a time-based vesting formula. Restricted share units represent a contingent commitment of the Company to issue shares to a grantee based on certain performance-based goals determined by the Compensation Committee.
	2013 Awards
	On February 7, 2013, our Board's independent trustees, Messrs. Charles Black, James Orphanides and Louis Salvatore, were awarded equity grants under the amended and restated 2004 equity incentive plan on the following terms: (i) (x) Mr. Black's award was for $100,000 in common shares and (y) Messrs. Orphanides and Salvatore each were awarded $25,000 in common shares for a total of $150,000; and (ii) each award vested in its entirety, upon issuance.
	On March 15, 2013, a total of 281,625 restricted common shares were granted to our named executive officers (Messrs. Cuneo, Kianka and Reid) based on each executive's achievement of performance objectives during 2012, as determined at the discretion of our Compensation Committee. Additionally, 21 of our employees were granted 117,300 restricted common shares, in the aggregate, on March 15, 2013. One-third of the restricted shares granted to our named executive officers and employees will vest in each of the first three anniversaries of grant if the grantee is employed by the Company on such anniversary. Compensation expense is recognized on a straight-line basis over the service vesting period of three years and takes into consideration an estimated forfeiture rate of 5%. We recognized share-based compensation expense of $1.0 million during the year ended December 31, 2013 as a result of granting the awards to our named executive officers and our employees.
	As a result of the Listing on May 21, 2013, a total of 375,000 common shares were awarded to our named executive officers (Messrs. Cuneo, Kianka and Reid) and other members of our senior management. These shares fully vested on July 10, 2013. Additionally, on July 10, 2013, other employees were granted a total of 27,500 common shares as a result of the Listing as determined by the compensation committee of our Board of Trustees. These shares fully vested on July 10, 2013. We incurred $3.8 million in share-based compensation in connection with the Listing which is included in Transition and Listing expenses in the accompanying consolidated statements of operations for the year ended December 31, 2013.
	2012 Awards
	A total of 300,000 restricted common shares with time-based vesting were granted to Mr. Cuneo, Mr. Kianka and other members of senior management of the Company on September 25, 2012 and the grant date fair value of the awards was $3,000,000. Compensation expense will be recognized on a straight-line basis over the service vesting period of three years and will take into consideration an estimated forfeiture rate of 5%. We recognized stock based compensation expense of $245,000 during the year ended December 31, 2012 as a result of granting the awards to Mr. Cuneo, Mr. Kianka and other members of senior management.
	Summary of Time-Based Restricted Common Shares
	A summary of our Time-Based Restricted Common Shares from January 1, 2014 through December 31, 2014 is presented below:
		Nonvested
		Common Shares		Weighted-Average			Vested
				Grant Date
				Fair Value
				per Share
	Outstanding at January 1, 2014	598,925		$	10		—
	Granted	545,325		7.74			—
	Vested	(317,133	)	7.77			317,133
	Forfeited	(26,418	)	8.4			—
	Canceled (1)	—		—			(95,313	)
	Outstanding at December 31, 2014	800,699		$	8.68		221,820
	__________
	-1	47,206 and 48,107 common shares were tendered in accordance with the terms of the 2013 and 2012 equity incentive awards, respectively, to satisfy minimum state tax withholding requirements related to the restricted common shares that have vested. We accept the return of shares at the current quoted closing share price of the Company's common shares on the NYSE to satisfy tax obligations.
		2014			2013			2012
	Compensation Expense Recorded During the Years ended December 31 (1)(2)	$	6,057		$	5,713		$	445
	Unamortized Compensation Costs	$	4,616		$	4,444		$	6,167
	Shares Available for the Future Awards(3)	4,045,493			4,597,500			19,298,000
	__________
	-1	2014 compensation expense includes severance expense totaling $2.7 million.
	-2	2013 compensation expense includes expenses incurred in the Listing Expense totaling $3.8 million.
	-3	Shares available for the future awards includes units under the 2013 equity incentive plan.
	Retirement of Mr. Cuneo
	On November 10, 2014, the Company announced the planned retirement of Mr. Cuneo. In connection with his retirement, Mr. Cuneo, the Company and CSP OP entered into a Memorandum of Retirement, which provides, among other things, that Mr. Cuneo will be treated as if he were terminated without cause under the terms of his existing employment agreement.  Upon his retirement, Mr. Cuneo will be entitled to receive cash compensation and his common shares will become fully vested. In addition, Mr. Cuneo will be granted 200,000 common shares, will remain eligible to receive an annual cash bonus and equity grant for his services in 2014, and will continue to be compensated as currently until March 16, 2015. We recognized cash compensation expense related to Mr. Cuneo's retirement of approximately $3.3 million, which will be paid out in accordance with his employment agreement. A total amount of $5.1 million has been recognized in general and administrative expense for the year ended December 31, 2014 and an estimated $2.3 million is expected to be recognized in 2015.
	401(k) Plan
	We sponsor a 401(k) Qualified Safe-Harbor Retirement Plan for its eligible employees. Each employee's contribution is discretionary, but subject to specific limitations under the Internal Revenue Code. The 401(k) Safe-Harbor Plan provides for a matching contribution by the Company up to an amount equal to the sum of 100% of an employee's 401 (k) contributions that do not exceed 3% of annual compensation for the year, plus a matching contribution in an amount equal to the sum of 50% of an employee's 401 (k) contributions that exceed 3% of annual compensation for the plan year and that do not exceed 4% of annual compensation for the plan year. 401(k) contributions made by employees and the Company vest immediately. For the year ended December 31, 2014, we contributed $0.2 million to the 401(k) plan.  We did not provide an employer match during the years ended December 31, 2013 and 2012.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity
	Common Shares
	Under our current declaration of trust, we have the authority to issue a total of 1,000,000,000 shares of beneficial interest. Of the total shares authorized, 990,000,000 shares are designated as common shares, with a par value of $0.01 per share, and 10,000,000 shares are designated as preferred shares, with a par value of $0.01 per share.
	On May 21, 2013, we listed our common shares on the NYSE under the symbol "CSG" and concurrently commenced the $125.0 million Tender Offer from our shareholders. As a result of the Tender Offer, on June 26, 2013, we accepted for purchase 12,376,237 common shares at a purchase price of $10.10 per share, for an aggregate cost of approximately $125.0 million, excluding fees and expenses relating to the Tender Offer.
	In connection with the Listing, we terminated our dividend reinvestment plan effective as of the close of business on May 21, 2013. As of the close of business on May 21, 2013, we had issued a total of 8,869,829 common shares pursuant to our dividend reinvestment plan, and received approximately $84.3 million in gross proceeds.
	In connection with the Listing, we terminated our share redemption program effective as of the close of business on May 21, 2013. During the years ended December 31, 2013 and 2012, we repurchased 4,996,935 common shares and 5,648,490 common shares, respectively, under our share redemption program for $47.4 million and $52.9 million, respectively.
	On July 8, 2013, we eliminated 14,501 outstanding fractional common shares (the "Fractional Shares") by paying each holder of a Fractional Share an amount in cash equal to the fraction of a share being repurchased multiplied by the closing price of our common shares on the NYSE, as of the date of payment, rounded up to the nearest cent.
	Beginning in the fourth quarter of 2013, we transitioned from quarterly distributions to paying distributions on a monthly basis as calculated pursuant to monthly record dates and distribution declaration dates.
	At-The-Market Offering
	On November 6, 2013, we and CSP OP entered into four separate Equity Distribution Agreements with certain sales agents, pursuant to which we may sell, from time to time, our common shares having an aggregate offering price of up to $250.0 million. Sales of our common shares may be made in ordinary brokers' transactions on the NYSE, in negotiated transactions or transactions that are deemed to be "at the market" ("ATM") offerings, including sales made to or through a market maker other than on an exchange, at prices related to the prevailing market prices or at negotiated prices. We may use these proceeds and proceeds from the sale of its debt securities to repay debt, including borrowings under our unsecured revolving credit facility, to make acquisitions of properties or portfolios of properties, or for general corporate purposes. As of December 31, 2014, there have been no sales of common shares under the ATM program.
	Accumulated Other Comprehensive Income (Loss)
	The following presents the changes in the balances of each component of accumulated other comprehensive income (loss) for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Foreign Currency			Swap Fair Value			Accumulated Other
		Translation Gain (Loss)			Adjustment			Comprehensive
								Income (Loss)
	Balance at January 1, 2012	$	(10,579	)	$	(13,085	)	$	(23,664	)
	Other Comprehensive Income Before Reclassifications	4,415			10,662			15,077
	Balance at December 31, 2012	$	(6,164	)	$	(2,423	)	$	(8,587	)
	Other Comprehensive Income Before Reclassifications	7,834			1,295			9,129
	Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	—			4,054			4,054
	Balance at December 31, 2013	$	1,670		$	2,926		$	4,596
	Other Comprehensive Loss Before Reclassifications	(19,183		)	(17,851		)	(37,034		)
	Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	—			9,169			9,169
	Balance at December 31, 2014	$	(17,513	)	$	(5,756	)	$	(23,269	)

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments and Investments	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments and Investments	Fair Value of Financial Instruments and Investments
	We apply the three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices for identical financial instruments in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as instruments that have little to no pricing observability as of the reported date. These financial instruments do not have two-way markets and are measured using management's best estimate of fair value, where the inputs into the determination of fair value require significant management judgment or estimation.
	As of December 31, 2014 and December 31, 2013 , we held certain items that were required to be measured at fair value on a recurring basis. These included cash equivalents, interest rate swap derivative contracts and our equity method investment in CB Richard Ellis Strategic Partners Asia II-A, L.P. ("CBRE Strategic Partners Asia"). Cash equivalents consist of short-term, highly liquid, income-producing investments, all of which have maturities of 90 days or less, including money market funds and U.S. Government obligations. Derivative instruments are related to our economic hedging activities with respect to interest rates.
	The fair values of the interest rate swap derivative agreements are estimated with the assistance of a third-party valuation specialist using the market standard methodology of discounting the future expected cash payments and receipts on the pay and receive legs of the interest rate swap agreements that swap the estimated variable rate mortgage note payment stream for a fixed rate receive payment stream over the period of the loan. The variable interest rates used in the calculation of projected receipts on the interest rate swap agreements are based on an expectation of future interest rates derived from observable market interest rate curves and volatilities. We incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements (where appropriate). Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of December 31, 2014 and December 31, 2013, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. We have consistently applied these valuation techniques in all periods presented and believe we have obtained the most accurate information available for the types of derivative contracts we hold.
	Our investment in CBRE Strategic Partners Asia is based on the Level 3 valuation inputs applied by the Investment Manager of this investment company utilizing a mix of different approaches for valuing the underlying real estate related investments within the investment company. The approaches include the income approach, direct market comparison approach and the replacement cost approach for newer properties. For investments owned more than one year, except for investments under construction or incurring significant renovation, it is CBRE Strategic Partners Asia's policy to obtain a third-party appraisal. For investments in real estate under construction or incurring significant renovation, the valuation analysis is prepared by the Investment Manager. On a quarterly basis, the Company obtains the financial results of CBRE Strategic Partners Asia and on an annul basis the Company receives audited financial statements.
	Impairment of Real Estate
	During the year ended December 31, 2014, we recognized an impairment charge of $27.6 million in continuing operations related to our 70 Hudson Street property. Accordingly, we reduced the carrying value of this property to the property’s current estimated fair value of approximately $94.0 million. The inputs used to calculate the fair value included projected cash flows and risk-adjusted rate of return that we estimated would be used by a market participant in valuing the asset or by obtaining a range of third-party broker valuation estimates.
	We utilized a discounted cash flow analysis to estimate the property's fair value. The unobservable inputs (Level 3) of our real estate that was recorded at fair value as of December 31, 2014 included a discount rate of 12%, a terminal capitalization rate of 6.5%, a market rent growth rate range of 3% - 3.4% and an expense growth rate of 3%.
	The following items are measured at fair value on a recurring basis and non-recurring basis at December 31, 2014 and December 31, 2013 (in thousands):
		As of December 31, 2014
		Fair Value Measurements Using:
		Quoted				Significant			Significant			Total
		Markets				Observable			Unobservable			Fair Value
		Prices				Inputs			Inputs
		(Level 1)				(Level 2)			(Level 3)
	Assets (Liabilities)
	Cash Equivalents	$	1,573			$	—		$	—		$	1,573
	Interest Rate Swaps Designated as Cash Flow Hedges - Assets	—				1,733			—			1,733
	Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	—				(7,699		)	—			(7,699		)
	Investment in CBRE Strategic Partners Asia	—				—			6,870			6,870
	Fair Value of Real Estate at Impairment(1)	—				—			94,000			94,000
	__________
	-1	Represents a non-recurring fair value measurement.
		As of December 31, 2013
		Fair Value Measurements Using:
		Quoted				Significant			Significant			Total
		Markets				Observable			Unobservable			Fair Value
		Prices				Inputs			Inputs
		(Level 1)				(Level 2)			(Level 3)
	Assets (Liabilities)
	Cash Equivalents	$	1,069			$	—		$	—		$	1,069
	Interest Rate Swaps Designated as Cash Flow Hedges - Assets	—				5,211			—			5,211
	Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	—				(2,565		)	—			(2,565		)
	Investment in CBRE Strategic Partners Asia	—				—			9,676			9,676
	The following table presents our activity for our investment in CBRE Strategic Partners Asia measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2014 and 2013, respectively (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2014		$	9,676
	Distributions		(2,724		)
	Total Income on Fair Value Adjustment		769
	Unrealized Loss in Fair Value Adjustment		(851		)
	Balance at December 31, 2014		$	6,870
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2013		$	8,098
	Total Income on Fair Value Adjustment		1,578
	Balance at December 31, 2013		$	9,676
	Disclosure of Fair Value Financial Instruments
	For disclosure purposes only, the following table summarizes our financial instruments and their estimated fair value at December 31, 2014 and December 31, 2013 (in thousands):
			December 31, 2014							31-Dec-13
	Financial Instrument		Carrying				Fair			Carrying			Fair
			Value				Value			Value			Value
	Secured Notes Payable(1)		$	610,608			$	628,194		$	681,200		$	721,728
	Unsecured Term Loan Facilities(1)		$	570,000			$	577,196		$	570,000		$	570,272
	Unsecured Revolving Credit Facility(1)		$	200,044			$	200,044		$	170,044		$	170,044
	__________
	-1	Items are measured using Level 2 inputs.
	These financial instruments do not have two-way markets and are measured using management's best estimate of fair value, where the inputs into the determination of fair value require significant management judgment or estimation.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Ground Leases - We own a property that is subject to a long-term noncancellable ground lease obligation that contractually expires on November 30, 2032. We have three ten-year renewal options that will allow us to extend the expiration of the ground lease through November 30, 2062. The minimum commitment under the ground lease as of December 31, 2014 and thereafter is as follows (in thousands):
	2015	$	273
	2016	273
	2017	273
	2018	276
	2019	308
	Thereafter	4,474
		$	5,877
	Litigation—From time to time, we and our properties may be subject to legal proceedings, which arise in the ordinary course of our business. Currently, neither our company nor any of our properties are subject to, or threatened with, any legal proceedings for which the outcome is reasonably likely to have a material adverse effect on our financial statements.
	Environmental Matters—We are not aware of any material environmental liability or any unasserted claim or assessment with respect to a material environmental liability that we believe would require additional disclosure or the recording of a loss contingency.

Segment_Disclosure

Segment Disclosure	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Disclosure	Segment Disclosure
	As a result of the reassessment of our reportable segments during the period ended March 31, 2014, we view our consolidated property operations as two reportable segments: Industrial Properties and Office Properties. Based on this, we reclassified the prior period segment financial results to conform to the current year presentation. In addition, we had one non-reportable segment, which was Retail Properties. However, during the quarter ended September 30, 2014 we sold our last remaining retail property, therefore, eliminating the nonreportable segment from future reportable presentations. Management internally evaluates the operating performance and financial results of our segments based on net operating income. We also have certain general and administrative level activities including legal, accounting, tax preparation and shareholder servicing costs that are not considered separate operating segments.
	We evaluate the performance of our segments based on net operating income, defined as: rental income, tenant reimbursements and other property income less property and related expenses (operating and maintenance and real estate taxes) and excludes other non-property income and expenses, interest expense, depreciation and amortization, and corporate general and administrative expenses.
	The following table compares the net operating income for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014			2013			2012
	Industrial Properties
	Revenues:
	Rental	$	60,241		$	54,256		$	42,362
	Tenant Reimbursements	15,866			15,848			8,861
	Other Property Income	711			—			—
	Total Revenues	76,818			70,104			51,223
	Property and Related Expenses:
	Property Operating	6,263			4,139			3,207
	Real Estate Taxes	12,756			14,004			7,621
	Total Property and Related Expenses	19,019			18,143			10,828
	Net Operating Income	$	57,799		$	51,961		$	40,395
	Office Properties
	Revenues:
	Rental	$	147,619		$	138,566		$	99,111
	Tenant Reimbursements	43,816			37,294			24,424
	Other Property Income	1,069			—			—
	Total Revenues	192,504			175,860			123,535
	Property and Related Expenses:
	Property Operating	30,341			26,868			17,983
	Real Estate Taxes	26,811			23,967			15,015
	Total Property and Related Expenses	57,152			50,835			32,998
	Net Operating Income	$	135,352		$	125,025		$	90,537
	Non-Reportable Properties
	Revenues:
	Rental	$	2,320		$	3,884		$	3,959
	Tenant Reimbursements	48			164			126
	Total Revenues	2,368			4,048			4,085
	Property and Related Expenses:
	Property Operating	153			214			274
	Total Property and Related Expenses	153			214			274
	Net Operating Income	$	2,215		$	3,834		$	3,811
		Year Ended December 31,
		2014			2013			2012
	Reconciliation to Consolidated Net Income
	Total Segment Net Operating Income	$	195,366		$	180,820		$	134,743
	Expenses:
	General and Administrative	31,333			23,138			14,660
	Investment Management Fee	—			489			29,695
	Acquisition-related Expenses	2,272			2,690			7,752
	Depreciation and Amortization	109,292			102,793			72,383
	Impairment of Real Estate	27,563			—			—
	Transition and Listing Expenses	—			12,681			8,249
		24,906			39,029			2,004
	Other Expenses and Income
	Interest and Other Income	652			1,321			2,235
	Interest Expense	(55,311		)	(47,295		)	(33,845		)
	Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	71			614			(118		)
	Gain on Sale of Real Estate	21,164			—			—
	Loss on Early Extinguishment of Debt	(477		)	(1,051		)	(17,284		)
	Gain on Conversion of Equity Investment to Controlling Interest	—			75,763			—
	(Loss) Income from Continuing Operations Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	(8,995		)	68,381			(47,008		)
	Provision for Income Taxes	(780		)	(287		)	(266		)
	Equity in Income of Unconsolidated Entities	28,823			12,111			3,959
	Net Income (Loss) from Continuing Operations	19,048			80,205			(43,315		)
	Discontinued Operations
	Income from Discontinued Operations	—			382			720
	Gain (Loss) on Sale of Real Estate	—			2,759			(413		)
	Income From Discontinued Operations	—			3,141			307
Net Income (Loss)	$	19,048		$	83,346		$	(43,008	)
	Year Ended December 31,
Condensed Assets	2014			2013			2012
Industrial Properties	$	916,038		$	725,566		$	678,930
Office Properties	1,504,285			1,639,875			1,115,906
Other Properties	—			50,209			66,924
Non-Segment Assets(1)	449,485			594,946			616,276
Non-Segment Construction Progress and Other Assets—Variable Interest Entity	—			—			76,826
Total Assets	$	2,869,808		$	3,010,596		$	2,554,862
__________
-1	Non-segment assets primarily include our investments in unconsolidated entities.
	Year Ended December 31,
Condensed Expenditures	2014			2013			2012
Industrial Properties	$	216,532		$	82,274		$	239,470
Office Properties	11,197			510,081			29,582
Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	—			—			56,180
Total Capital Expenditures	$	227,729		$	592,355		$	325,232

Earnings_per_Share_Attributabl

Earnings per Share Attributable to Common Shareholders	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings per Share Attributable to Common Shareholders	Earnings per Share Attributable to Common Shareholders
	The following table reconciles the numerator and denominator in computing the Company's basic and diluted per-share computations for net income attributable to common shareholders for the years ended December 31, 2014, 2013 and 2012 is as follows (in thousands except share data):
		Year Ended December 31,
		2014			2013			2012
	Numerator:
	Income (Loss) from Continuing Operations	$	19,048		$	80,205		$	(43,315	)
	(Income) Loss from Continuing Operations Attributable to Noncontrolling Interests	—			(82		)	32
	Allocation to Participating Securities (Nonvested Time-Based Shares)	(454		)	(360		)	(90		)
	Numerator for Basic and Diluted Income (Loss) from Continuing Operations	18,594			79,763			(43,373		)
	Income from Discontinued Operations	—			3,141			307
	Numerator for Basic and Diluted Net Income (Loss) Attributable to Common Shareholders	$	18,594		$	82,904		$	(43,066	)
	Denominator:
	Basic Weighted Average Vested Shares Outstanding	236,866,656			242,379,680			248,154,277
	Effect of Dilutive Securities - Performance-Based Shares(1)	—			—			—
	Diluted Weighted Average Vested Shares Outstanding	236,866,656			242,379,680			248,154,277
	Basic and Diluted Earnings Per Share:
	Income (Loss) from Continuing Operations Attributable to Common Shareholders per Share	$	0.08		$	0.33		$	(0.17	)
	Income from Discontinued Operations Attributable to Common Shareholders per Share	$	0		$	0.01		$	0
	Net Income (Loss) Attributable to Common Shareholders per Share	$	0.08		$	0.34		$	(0.17	)
	__________
	-1	375,000 performance-based shares granted in September 2012 and subsequently vested in May 2013 are not included in the diluted weighted average share calculations for the year ended December 31, 2012 because the effect would be anti-dilutive.

Distributions

Distributions	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Distributions	Distributions
	Earnings and profits, which determine the taxability of distributions to shareholders, will differ from income reported for financial reporting purposes due to the differences for federal income tax purposes including the treatment of loss on extinguishment of debt, revenue recognition, compensation expense and in the basis of depreciable assets and estimated useful lives used to compute depreciation.
	The following table reconciles the distributions declared per common share to the distributions paid per common share during the years ended December 31, 2014, 2013 and 2012:
		2014				2013				2012
	Distributions declared per common share	$	0.504			$	0.551			$	0.6
	Less: Distributions declared in the current period, and paid in the subsequent period	(0.042		)		(0.042		)		(0.150		)
	Add: Distributions declared in the prior year, and paid in the current year	0.042				0.15				0.15
	Distributions paid per common share	$	0.504			$	0.659			$	0.6
	Distributions to shareholders during the years ended December 31, 2014, 2013 and 2012, totaled approximately $119.3 million, $159.6 million and $144.3 million, respectively.
	The income tax treatment for distributions declared for the years ended December 31, 2014, 2013 and 2012 as identified above, were as follows (unaudited):
		2014							2013						2012
	Ordinary Income	$	0.32			63.5	%		$	0.2903			44.1	%	$	0.087	14.5	%
	Return of Capital	0.1195				23.7	%		0.3614				54.8	%	0.513		85.5	%
	Capital Gain	0.0644			(1)	12.8	%		0.0073				1.1	%	—		—	%
		$	0.504			100	%		$	0.659			100	%	$	0.6	100	%
	__________
	-1	38.7% of the capital gain is comprised of a recaptured Section 1250 gain.

Quarterly_Financial_Informatio

Quarterly Financial Information (unaudited)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Quarterly Financial Information (unaudited)	Quarterly Financial Information (unaudited)
	Summarized quarterly financial data for the years ended December 31, 2014 and 2013 was as follows (in thousands, except per share amounts):
		2014 Quarter Ended
		March 31		June 30			September 30		December 31
	Total Revenue	$	68,165	$	66,628		$	68,147	$	68,750
	Income from Continuing Operations	3,319		5,153			18,468		(7,892		)
	Net Income (Loss)	3,319		5,153			18,468		(7,892		)
	Net Income (Loss) Attributable to Common Shareholders	3,319		5,153			18,468		(7,892		)
	Net Income (Loss) Attributable to Common Shareholders per share-basic and diluted	$	0.01	$	0.02		$	0.08	$	(0.03	)
		2013 Quarter Ended
		March 31		June 30			September 30		December 31
	Total Revenue	$	53,432	$	66,556		$	64,786	$	65,238
	Income (Loss) from Continuing Operations	81,999		(3,730		)	745		1,191
	Income from Discontinued Operations	91		90			114		2,846
	Net Income (Loss)	82,090		(3,640		)	859		4,037
	Net Income (Loss) Attributable to Common Shareholders	82,007		(3,636		)	856		4,037
	Net Income (Loss) Attributable to Common Shareholders per share-basic and diluted	$	0.33	$	(0.01	)	$	0	$	0.02

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	On January 9, 2015, our Board of Trustees’ independent trustees, Messrs. Black, Brugger, Francis, Orphanides and Salvatore, were awarded restricted share units ("RSUs") under the Company’s 2013 Equity Incentive Plan on the following terms: (i) (y) Mr. Black was awarded 20,000 RSUs, and (z) Messrs. Brugger, Francis, Orphanides and Salvatore each were awarded 5,000 RSUs; and (ii) each award is subject to a mandatory deferral program. Pursuant to the mandatory deferral program, each RSU entitles a holder to receive one common share upon the earlier of (i) the sixth month anniversary of the holder's separation of service from the Company, and (ii) a change in control of the Company. Each RSU also entitles a holder to receive an amount equal to the dividends paid on one common share.
	On January 23, 2015 , the Duke JV sold an office property located in Raleigh, North Carolina for approximately $20.6 million, of which our pro rata share was approximately $16.4 million.
	On February 2, 2015, we paid off the notes payable secured by One Wayside Road in the amount of $23.8 million prior to their maturity dates of August 1, 2015.
	On February 10, 2015, we acquired a 11.8 acre undeveloped parcel in Goodyear, Arizona for a price of $1.7 million.
	On February 20, 2015, our Board of Trustees approved a monthly distribution of $0.0425 per common share for each of the months of April, May and June of 2015. The April dividend will be paid on May 8, 2015 to all shareholders of record on April 30, 2015, the May dividend will be paid on June 8, 2015 to all shareholders of record on May 29, 2015, and the June dividend will be paid on July 9, 2015 to all shareholders of record on June 30, 2015.

Schedule_IIISchedule_of_Invest

Schedule III-Schedule of Investments in Real Estate	12 Months Ended
	Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III-Schedule of Investments in Real Estate
					Acquisition Costs																		Im-			Total		Accu-			Net		De-	Date of
																							prove-			Cost		mulated			Invest-		precia-	Acquisition
																							ments					De-			ments		tion	(A)/
																							Sub-					precia-			in Real		Life(1)	Construction
																							sequent					tion			Estate			(C)(2)
																							to					and
																							Purchase					Amor-
	Property		Location		Encumbrance				Land				Site		Land		Building		Tenant		Total		Date					tization
					Net								Improve-		Avail-		and		Im-
													ments		able		Improve-		prove-
															for Expan-		ments		ments
															sion
	REMEC Corporate Campus		San Diego, CA		$	—			$	11,862			$	—	—		$	8,933	$	3,217	$	24,012	$	95		$	24,107	$	(5,041	)	$	19,066	39	9/15/04	(A)
	300 Constitution		Boston, MA		—				5,441				—		150		13,826		733		20,150		—			20,150		(4,337		)	15,813		39	11/3/04	(A)
	660 North Dorothy		Dallas, TX		—				1,576				417		—		3,402		199		5,594		382			5,976		(1,559		)	4,417		39	1/9/06	(A)
	505 Century		Dallas, TX		—				950				304		—		3,685		119		5,058		1,263			6,321		(1,582		)	4,739		39	1/9/06	(A)
	631 International		Dallas, TX		—				923				238		—		2,912		285		4,358		548			4,906		(1,155		)	3,751		39	1/9/06	(A)
	602 Central Blvd.		Coventry, UK		—				2,917				251		1,870		13,957		—		18,995		672			19,667		(2,985		)	16,682		39	4/27/07	(A)
	Bolingbrook Point III		Chicago, IL		—				2,423				522		—		13,434		164		16,543		51			16,594		(2,932		)	13,662		39	8/29/07	(A)
	Fairforest Bldg. 5		Spartanburg, SC		7,624				1,637				2,462		150		12,017		100		16,366		11			16,377		(3,565		)	12,812		39	8/30/07	(A)
	Fairforest Bldg. 6		Spartanburg, SC		1,710				463				506		719		3,753		459		5,900		—			5,900		(1,374		)	4,526		39	8/30/07	(A)
	Fairforest Bldg. 7		Spartanburg, SC		—				490				463		169		4,503		—		5,625		595			6,220		(1,579		)	4,641		39	8/30/07	(A)
	HJ Park Bldg. 1		Spartanburg, SC		—				575				468		—		2,472		12		3,527		7			3,534		(709		)	2,825		39	8/30/07	(A)
	North Rhett I		Charleston, SC		1,914				1,290				366		—		9,627		428		11,711		946			12,657		(2,421		)	10,236		39	8/30/07	(A)
	North Rhett II		Charleston, SC		1,374				539				144		—		5,670		26		6,379		604			6,983		(1,749		)	5,234		39	8/30/07	(A)
	North Rhett III		Charleston, SC		—				500				209		131		3,366		18		4,224		29			4,253		(754		)	3,499		39	8/30/07	(A)
	North Rhett IV		Charleston, SC		7,614				2,203				1,716		229		12,445		91		16,684		—			16,684		(3,225		)	13,459		39	8/30/07	(A)
	Jedburg Commerce Park		Charleston, SC		—				3,911				3,026		118		20,381		149		27,585		305			27,890		(5,527		)	22,363		39	8/30/07	(A)
	Mount Holly Bldg.		Charleston, SC		1,374				1,012				1,050		—		3,699		18		5,779		55			5,834		(1,282		)	4,552		39	8/30/07	(A)
	Orangeburg Park Bldg.		Charleston, SC		1,397				456				641		88		3,636		93		4,914		—			4,914		(1,090		)	3,824		39	8/30/07	(A)
	Kings Mt. I		Charlotte, NC		1,193				66				362		442		3,097		166		4,133		89			4,222		(964		)	3,258		39	8/30/07	(A)
	Kings Mt. II		Charlotte, NC		3,381				774				1,351		—		10,199		958		13,282		—			13,282		(3,148		)	10,134		39	8/30/07	(A)
	Union Cross Bldg. I		Winston-Salem, NC		1,834				852				759		—		3,905		27		5,543		—			5,543		(1,120		)	4,423		39	8/30/07	(A)
	Union Cross Bldg. II		Winston-Salem, NC		5,587				1,658				1,576		—		12,271		65		15,570		483			16,053		(3,165		)	12,888		39	8/30/07	(A)
	Fairforest Bldg. 1		Spartanburg, SC		—				335				107		—		2,509		6		2,957		—			2,957		(452		)	2,505		39	8/30/07	(A)
	Fairforest Bldg. 2		Spartanburg, SC		—				241				122		156		4,654		2		5,175		200			5,375		(907		)	4,468		39	8/30/07	(A)
	Fairforest Bldg. 3		Spartanburg, SC		—				444				231		164		4,695		14		5,548		—			5,548		(863		)	4,685		39	8/30/07	(A)
	Fairforest Bldg. 4		Spartanburg, SC		—				661				331		—		4,566		10		5,568		3,003			8,571		(967		)	7,604		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 1		Spartanburg, SC		—				704				219		—		4,347		8		5,278		722			6,000		(806		)	5,194		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 5		Spartanburg, SC		—				421				162		—		800		4		1,387		109			1,496		(220		)	1,276		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 7		Spartanburg, SC		—				1,233				510		—		2,949		1		4,693		381			5,074		(795		)	4,279		39	8/30/07	(A)
	Orchard Business Park 2		Spartanburg, SC		—				173				62		—		526		—		761		35			796		(145		)	651		39	8/30/07	(A)
	Greenville/Spartanburg Ind. Pk		Spartanburg, SC		—				460				200		—		2,584		2		3,246		240			3,486		(595		)	2,891		39	8/30/07	(A)
					Acquisition Costs																		Im-			Total		Accu-			Net		De-	Date of
																							prove-			Cost		mulated			Invest-		precia-	Acquisition
																							ments					De-			ments		tion	(A)/
																							Sub-					precia-			in Real		Life(1)	Construction
																							sequent					tion			Estate			(C)(2)
																							to					and
																							Purchase					Amor-
	Property		Location		Encumbrance				Land				Site		Land		Building		Tenant		Total		Date					tization
					Net								Improve-		Avail-		and		Im-
													ments		able		Improve-		prove-
															for Expan-		ments		ments
															sion
	Community Cash Complex 1		Spartanburg, SC		—				867				175		—		1,622		—		2,664		690			3,354		(960		)	2,394		39	8/30/07	(A)
	Community Cash Complex 2		Spartanburg, SC		—				887				136		—		1,169		3		2,195		—			2,195		—			2,195		39	8/30/07	(A)
	Community Cash Complex 3		Spartanburg, SC		—				205				16		—		1,190		22		1,433		—			1,433		(219		)	1,214		39	8/30/07	(A)
	Community Cash Complex 4		Spartanburg, SC		—				132				15		—		399		—		546		—			546		—			546		39	8/30/07	(A)
	Community Cash Complex 5		Spartanburg, SC		—				138				15		—		671		—		824		—			824		—			824		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 2		Spartanburg, SC		—				969				363		162		3,008		24		4,526		—			4,526		(653		)	3,873		39	9/24/07	(A)
	Highway 290 Commerce Pk Bldg. 6		Spartanburg, SC		—				498				176		74		3,012		—		3,760		554			4,314		(647		)	3,667		39	11/1/07	(A)
	Lakeside Office Center		Dallas, TX		8,617				4,328				817		—		10,497		1,140		16,782		626			17,408		(3,413		)	13,995		39	3/5/08	(A)
Kings Mt. III		Charlotte, NC		—				674				1,647		509		13,738		—		16,568		4,853			21,421		(4,209		)	17,212		39	3/14/08	(A)
Enclave on the Lake		Houston, TX		—				4,056				10,230		—		20,823		1,197		36,306		2,162			38,468		(7,869		)	30,599		39	7/1/08	(A)
Avion Midrise III & IV		Chantilly, VA		—				6,810				1,179		—		30,004		1,105		39,098		201			39,299		(6,380		)	32,919		39	11/18/08	(A)
13201 Wilfred Lane		Minneapolis, MN		—				2,274				412		—		11,049		129		13,864		—			13,864		(1,788		)	12,076		39	6/29/09	(A)
3011, 3055 & 3077 Comcast Place		East Bay, CA		—				7,013				998		—		21,858		7,739		37,608		—			37,608		(6,342		)	31,266		39	7/1/09	(A)
140 Depot Street		Boston, MA		—				3,560				1,172		—		11,898		158		16,788		—			16,788		(2,162		)	14,626		39	7/31/09	(A)
Crest Ridge Corporate Center I		Minneapolis, MN		—				4,624				335		—		16,024		3,174		24,157		28			24,185		(4,023		)	20,162		39	8/17/09	(A)
West Point Trade Center		Jacksonville, FL		—				5,843				2,925		—		16,067		368		25,203		4,849			30,052		(3,524		)	26,528		39	12/30/09	(A)
5160 Hacienda Drive		East Bay, CA		—				8,100				740		—		20,776		1,693		31,309		—			31,309		(3,510		)	27,799		39	4/8/10	(A)
10450 Pacific Center Court		San Diego, CA		—				4,501				724		499		20,410		1,061		27,195		—			27,195		(3,251		)	23,944		39	5/7/10	(A)
225 Summit Avenue		Northern, NJ		—				6,443				978		657		25,460		2,240		35,778		—			35,778		(4,203		)	31,575		39	6/21/10	(A)
One WaySide Road		Boston, MA		23,873				7,500				517		—		37,870		2,442		48,329		226			48,555		(5,939		)	42,616		39	6/24/10	(A)
100 Tice Blvd.		Northern, NJ		39,416				7,300				1,048		—		47,114		2,231		57,693		—			57,693		(6,294		)	51,399		39	9/28/10	(A)
Ten Parkway North		Chicago, IL		11,468				3,500				276		—		15,764		1,368		20,908		19			20,927		(2,340		)	18,587		39	10/12/10	(A)
4701 Gold Spike Drive		Dallas, TX		9,958				3,500				384		—		14,057		96		18,037		—			18,037		(1,697		)	16,340		39	10/27/10	(A)
1985 International Way		Hebron, KY		6,919				2,200				396		—		10,544		33		13,173		95			13,268		(1,272		)	11,996		39	10/27/10	(A)
3660 Deerpark Boulevard		Jacksonville, FL		7,153				2,061				438		339		10,036		67		12,941		—			12,941		(1,261		)	11,680		39	10/27/10	(A)
Tolleson Commerce Park II		Phoenix, AZ		4,301				2,200				567		—		4,753		62		7,582		187			7,769		(826		)	6,943		39	10/27/10	(A)
Pacific Corporate Park		Sterling, VA		—				13,928				47,023		7,200		46,993		14,810		129,954		110			130,064		(24,458		)	105,606		39	11/15/10	(A)
100 Kimball Drive		Northern, NJ		—				8,800				1,270		—		39,401		2,946		52,417		—			52,417		(5,609		)	46,808		39	12/10/10	(A)
70 Hudson Street		Jersey City, NJ		115,018				55,300				8,885		—		56,195		3,470		123,850		(35,918		)	87,932		—			87,932		39	4/11/11	(A)
90 Hudson Street		Jersey City, NJ		104,863				56,400				9,968		—		76,909		3,198		146,475		946			147,421		(11,453		)	135,968		39	4/11/11	(A)
Millers Ferry Road		Dallas, TX		—				5,835				8,755		—		18,412		688		33,690		150			33,840		(3,969		)	29,871		39	6/2/11	(A)
Sky Harbor Operations Center		Phoenix, AZ		—				—				20,848		—		19,677		4,565		45,090		—			45,090		(7,110		)	37,980		39	9/30/11	(A)
				Acquisition Costs																		Im-			Total		Accu-			Net		De-	Date of
																						prove-			Cost		mulated			Invest-		precia-	Acquisition
																						ments					De-			ments		tion	(A)/
																						Sub-					precia-			in Real		Life(1)	Construction
																						sequent					tion			Estate			(C)(2)
																						to					and
																						Purchase					Amor-
Property		Location		Encumbrance				Land				Site		Land		Building		Tenant		Total		Date					tization
				Net								Improve-		Avail-		and		Im-
												ments		able		Improve-		prove-
														for Expan-		ments		ments
														sion
Atwater		Philadelphia, PA		—				5,818				11,583		1,033		29,113		30,719		78,266		—			78,266		(8,157		)	70,109		39	10/27/11	(A)
Aurora Commerce Center Bldg. C		Denver, CO		—				2,600				1,126		—		17,466		254		21,446		—			21,446		(1,714		)	19,732		39	11/30/11	(A)
Sabal Pavilion		Tampa, FL		—				3,900				1,394		—		10,734		1,656		17,684		251			17,935		(1,646		)	16,289		39	12/30/11	(C)
2400 Dralle Road		Chicago, IL		—				9,975				4,732		1,731		38,175		912		55,525		8			55,533		(3,825		)	51,708		39	3/20/12	(A)
Midwest Commerce Center I		Kansas City, KS		—				4,739				10,517		1,926		36,170		597		53,949		7			53,956		(3,983		)	49,973		39	8/16/12	(A)
20000 S. Diamond Lake Road		Minneapolis, MN		6,265				1,976				884		—		12,041		55		14,956		—			14,956		(794		)	14,162		39	11/7/12	(A)
Gateway at Riverside		Baltimore, MD		—				6,940				6,597		—		26,918		475		40,930		—			40,930		(2,450		)	38,480		39	11/30/12	(A)
Gateway II at Riverside		Baltimore, MD		—				772				253		1,545		—		—		2,570		—			2,570		(35		)	2,535		39	11/30/12	(A)
701 & 801 Charles Ewing Blvd		Princeton, NJ		—				2,376				3,832		—		14,306		2,268		22,782		190			22,972		(1,652		)	21,320		39	12/28/12	(A)
Mid-Atlantic Distribution Center - Bldg A		Baltimore, MD		—				7,033				3,578		—		24,780		385		35,776		7			35,783		(1,814		)	33,969		39	12/28/12	(A)
1400 Perimeter Park Drive		Raleigh, NC		2,359				765				541		—		3,320		332		4,958		—			4,958		(279		)	4,679		39	3/1/13	(A)
3900 North Paramount Parkway		Raleigh, NC		7,786				861				525		—		12,474		688		14,548		—			14,548		(768		)	13,780		39	3/1/13	(A)
3900 South Paramount Parkway		Raleigh, NC		7,787				1,062				650		—		13,842		552		16,106		—			16,106		(842		)	15,264		39	3/1/13	(A)
Point West I		Dallas, TX		10,716				3,616				1,888		—		21,811		1,339		28,654		—			28,654		(1,911		)	26,743		39	3/1/13	(A)
22535 Colonial Pkwy		Houston, TX		8,031				1,336				992		—		12,499		862		15,689		1,485			17,174		(958		)	16,216		39	3/1/13	(A)
Atrium I		Columbus, OH		21,580				4,131				1,990		—		28,589		3,559		38,269		634			38,903		(2,821		)	36,082		39	3/1/13	(A)
Easton III		Columbus, OH		6,280				2,164				1,591		—		11,944		1,246		16,945		235			17,180		(1,149		)	16,031		39	3/1/13	(A)
Landings I		Cincinnati, OH		16,728				1,689				1,229		—		21,824		1,529		26,271		—			26,271		(1,541		)	24,730		39	3/1/13	(A)
Landings II		Cincinnati, OH		14,740				1,434				877		—		18,637		1,009		21,957		1,082			23,039		(1,603		)	21,436		39	3/1/13	(A)
McAuley Place		Cincinnati, OH		13,056				1,467				637		—		19,996		1,901		24,001		507			24,508		(1,628		)	22,880		39	3/1/13	(A)
Miramar I		Ft. Lauderdale, FL		9,257				9,999				2,280		1,573		3,654		2,457		19,963		—			19,963		(991		)	18,972		39	3/1/13	(A)
Miramar II		Ft. Lauderdale, FL		12,471				9,841				1,857		—		13,949		2,056		27,703		—			27,703		(2,042		)	25,661		39	3/1/13	(A)
Northpoint III		Orlando, FL		10,392				3,157				1,510		—		15,081		1,165		20,913		—			20,913		(1,140		)	19,773		39	3/1/13	(A)
Celebration Office Center		Orlando, FL		8,966				4,892				1,529		—		8,499		657		15,577		8			15,585		(967		)	14,618		39	3/1/13	(A)
Goodyear Crossing II		Phoenix, AZ		19,836				7,471				2,919		—		46,349		492		57,231		60			57,291		(2,673		)	54,618		39	3/1/13	(A)
Norman Pointe I		Minneapolis, MN		22,159				3,369				1,089		—		25,906		1,615		31,979		384			32,363		(2,130		)	30,233		39	3/1/13	(A)
Norman Pointe II		Minneapolis, MN		24,681				1,483				1,123		—		36,298		4,818		43,722		4,166			47,888		(4,548		)	43,340		39	3/1/13	(A)
Carpenter Corporate Center I & II		Dallas, TX		—				5,901				1,160		—		31,201		3,588		41,850		185			42,035		(1,763		)	40,272		39	7/31/13	(A)
1200 Woods Chapel Road		Spartenburg, SC		—				896				2,373		664		4,925		58		8,916		—			8,916		(393		)	8,523		39	8/8/13	(A)
445 Airtech Parkway		Indianapolis, IN		—				3,028				2,636		1,070		19,201		242		26,177		—			26,177		(630		)	25,547		39	1/2/14	(A)
1 Rocket Road		Hawthorne, CA		20,930				15,486				402		—		30,043		731		46,662		—			46,662		(437		)	46,225		39	7/31/14	(A)
1659 Sauget Business Blvd		Sauget, IL		—				698				817		—		17,060		465		19,040		—			19,040		(49		)	18,991		39	10/24/14	(A)
325 CenterPoint Blvd		Pittston, PA		—				2,759				3,097		—		34,352		657		40,865		—			40,865		(108		)	40,757		39	11/18/14	(A)
				Acquisition Costs																		Im-			Total		Accu-			Net		De-	Date of
																						prove-			Cost		mulated			Invest-		precia-	Acquisition
																						ments					De-			ments		tion	(A)/
																						Sub-					precia-			in Real		Life(1)	Construction
																						sequent					tion			Estate			(C)(2)
																						to					and
																						Purchase					Amor-
Property		Location		Encumbrance				Land				Site		Land		Building		Tenant		Total		Date					tization
				Net								Improve-		Avail-		and		Im-
												ments		able		Improve-		prove-
														for Expan-		ments		ments
														sion
550 Oak Ridge Drive		Hazle Township, PA		—				3,690				4,444		—		28,538		319		36,991		—			36,991		(93		)	36,898		39	11/18/14	(A)
125 Capital Road		Pittston, PA		—				762				996		—		6,059		39		7,856		—			7,856		(20		)	7,836		39	11/18/14	(A)
14-46 Alberigi Drive		Jessup, PA		—				815				1,629		—		6,745		147		9,336		—			9,336		(25		)	9,311		39	11/18/14	(A)
				$	610,608			$	416,537			$	227,480	$	23,368	$	1,528,719	$	133,247	$	2,329,351	$	(188	)	$	2,329,163	$	(239,973	)	$	2,089,190
_________
-1	The initial costs of buildings and improvements are depreciated over 39 years using a straight-line method of accounting; site improvements are depreciated over a range of 15 to 25 years; and improvements capitalized subsequent to acquisition are depreciated over the shorter of the lease term or useful life.
-2	Represents our date of acquisition or construction.
Investments in real estate (in thousands):
		December 31,
		2014				2013				2012
Balance, Beginning of the Year		$	2,270,222			$	1,804,885			$	1,514,633
Acquisitions		186,931				52,531				230,919
Dispositions		(103,982		)		(27,259		)		(3,715		)
Improvements		11,910				10,056				2,688
Impairment of Real Estate		(35,918		)		—				—
Improvements—Variable Interest Entity		—				(72,742		)		60,360
Transfer from Joint Venture		—				502,751				—
Balance, End of the Year		$	2,329,163			$	2,270,222			$	1,804,885
Accumulated depreciation related to investments in real estate (in thousands):
		December 31,
		2014				2013				2012
Balance, Beginning of the Year		$	(195,778	)		$	(132,129	)		$	(88,084	)
Additions		(69,584		)		(65,565		)		(44,402		)
Dispositions		15,255				1,916				357
Impairment of Real Estate		10,134				—				—
Balance, End of the Year		$	(239,973	)		$	(195,778	)		$	(132,129	)
The aggregate gross cost of our investments in real estate for U.S. Federal income tax purposes approximated $2.7 billion as of December 31, 2014.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation
	The accompanying consolidated financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles ("GAAP") and reflect the accounts of the Company, CSP OP and its consolidated subsidiaries. The Company consolidates its wholly-owned properties and joint ventures it controls through either 1) voting rights or similar rights or 2) by means other than voting rights if the Company is deemed to be the primary beneficiary of a variable interest entity ("VIE"). All intercompany accounts and transactions are eliminated in consolidation.
Use of Estimates	Use of Estimates
	The preparation of financial statements, in conformity with GAAP, requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Investment in Unconsolidated Entities	Investment in Unconsolidated Entities
	We determine if an entity is a VIE based on several factors, including whether the entity's total equity investment at risk upon inception is sufficient to finance the entity's activities without additional subordinated financial support. We make judgments regarding the sufficiency of the equity at risk based first on a qualitative analysis, then a quantitative analysis, if necessary. In a quantitative analysis, we incorporate various estimates, including estimated future cash flows, asset holding periods and discount rates, as well as estimates of the probabilities of the occurrence of various scenarios occurring. If the entity is a VIE, we then determine whether to consolidate the entity as the primary beneficiary. We determine whether an entity is a VIE and, if so, whether it should be consolidated by utilizing judgments and estimates that are inherently subjective. If we made different judgments or utilized different estimates in these evaluations, it could result in differing conclusions as to whether or not an entity is a VIE and whether or not we consolidate such entity.
	With respect to our majority limited membership interests in the Duke/Hulfish, LLC joint venture (the "Duke JV"), the Afton Ridge Joint Venture, LLC ("Afton Ridge"), the Goodman Princeton Holdings (Jersey) Limited joint venture (the "UK JV") and the Goodman Princeton Holdings (LUX) SARL joint venture (the "European JV"), we considered the Accounting Standards Codification ("ASC") Topic "Consolidation" ("FASB ASC 810") in determining that we did not have control over the financial and operating decisions of such entities due to the existence of substantive participating rights held by the minority limited members who are also the managing members of the Duke JV and Afton Ridge, and the investment advisors/managers of the UK JV and the European JV, respectively. Additionally, we concluded that each of these entities was under the shared control of its limited members. The accounting policies applied by each of these entities are consistent with those applied by us.
	We carry our investments in our joint ventures using the equity method of accounting because we have the ability to exercise significant influence (but not control) over operating and financial policies of each such entity. We eliminate transactions with such equity method entities to the extent of our ownership in each such entity. Accordingly, our share of net income (loss) of these equity method entities is included in consolidated net income (loss).
	Our determination of the appropriate accounting method with respect to our investment in CBRE Strategic Partners Asia, which is not considered a VIE, is partially based on CBRE Strategic Partners Asia's sufficiency of equity investment at risk which was triggered by a substantial paydown during 2009 of its subscription line of credit, which is backed by investor capital commitments to fund its operations. We account for this investment under the equity method of accounting.
	CBRE Strategic Partners Asia is a limited partnership that qualifies for specialized industry accounting for investment companies. Specialized industry accounting allows investment companies to carry their investments at fair value, with changes in the fair value of the investments recorded in the statement of operations. On the basis of the guidance in ASC 970-323, the Company accounts for its investment in CBRE Strategic Partners Asia under the equity method. As a result, and in accordance with ASC 810-10-25-15, the specialized accounting treatment, principally the fair value basis applied by CBRE Strategic Partners Asia under the investment company guide, is retained in the recognition of equity method earnings in the statement of operations of the Company. See Note 12 "Fair Value of Financial Instruments and Investments" for further discussion of the application of the fair value accounting to our investment in CBRE Strategic Partners Asia.
Segment Information	Segment Information
	We currently operate our consolidated properties in two geographic areas, the United States and the United Kingdom. We view our consolidated property operations as two reportable segments, Industrial Properties and Office Properties, which participate in the acquisition, development, ownership, and operation of high quality real estate in their respective segments.
Cash and Cash Equivalents	Cash Equivalents
	We consider short-term investments with maturities of three months or less when purchased to be cash equivalents.
Restricted Cash	Restricted Cash
	Restricted cash represents those cash accounts for which the use of funds is restricted by loan covenants.
Discontinued Operations and Real Estate Held for Sale	Discontinued Operations and Real Estate Held for Sale
	A discontinued operation arises upon the disposal of a component of an entity (or upon the classification of a component as held for sale), provided that (1) the operations and cash flows of the component have been or will be eliminated from the entity's ongoing operations and (2) the entity will have no significant continuing involvement in the component after disposition. In a period in which a component has been disposed of or is classified as held for sale, the statements of operations for current and prior periods report the results of operations of the component as discontinued operations. In the first quarter of 2014, we adopted ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which requires only disposals representing a strategic shift in operations (i.e., a disposal of a major geographic area, a major line of business, or a major equity method investment) to be presented as discontinued operations.
	At such time as a property is deemed held for sale, such property is carried at the lower of: (1) its carrying amount or (2) fair value less costs to sell. In addition, a property being held for sale ceases to be depreciated. We classify operating properties as property held for sale in the period in which all of the following criteria are met:
	•	management, having the authority to approve the action, commits to a plan to sell the component;
	•	the component is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such components;
	•	an active program to locate a buyer and other actions required to complete the plan to sell the component has been initiated;
	•	the sale of the component is probable and the transfer of the component is expected to qualify for recognition as a completed sale within one year;
	•	the component is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and
	•	given the actions required to complete the plan to sell the component, it is unlikely that significant changes to the plan would be made or that the plan would be withdrawn.
Accounting for Derivative Financial Instruments and Hedging Activities	Accounting for Derivative Financial Instruments and Hedging Activities
	All of our derivative instruments are carried at fair value on the balance sheet. Derivative instruments designated in a hedge relationship to mitigate exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objective and strategy for undertaking each hedge transaction. We periodically review the effectiveness of each hedging transaction, which involves estimating future cash flows. Cash flow hedges are accounted for by recording the fair value of the derivative instrument on the balance sheet as either an asset or liability, with a corresponding amount recorded in other comprehensive income within shareholders' equity. Only the effective portion of qualifying hedging relationships are recorded to other comprehensive income with the ineffective portion recorded to earnings. Calculation of the fair value of derivative instruments also requires management to use estimates. Amounts will be reclassified from other comprehensive income to the income statement in the period or periods the hedged forecasted transaction affects earnings.
	We have certain interest rate swap derivatives that are designated as qualifying cash flow hedges and follow the accounting treatment discussed above. We also have certain interest rate swap derivatives that do not qualify for hedge accounting, and accordingly, changes in fair values are recognized in current earnings.
Investments in Real Estate and Related Long Lived Assets (Impairment Evaluation)	Investments in Real Estate and Related Long Lived Assets (Impairment Evaluation)
	Our investments in real estate are stated at depreciated cost. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives as follows:
	Asset Description		Depreciable Lives
	Buildings and Improvements		39 years
	Site Improvements		15 - 25 years
	Tenant Improvements		Shorter of the useful lives or the terms of the related leases
	Improvements and replacements are capitalized when they extend the useful life, increase capacity, or improve the efficiency of the asset. Repairs and maintenance are charged to expense as incurred. Land available for expansion is recorded at cost and separated out accordingly.
	We assess whether there has been impairment in the value of our long-lived assets whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount to the future net cash flows, undiscounted and without interest, expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the estimated fair value of the assets. The estimated fair value of the asset group identified for step two testing is based on either the income approach with market discount rate, terminal capitalization rate and rental rate assumptions being most critical, or on the sales comparison approach to similar properties. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less costs to sell.
	We evaluate our investments in unconsolidated entities for indicators of impairment during each reporting period. A series of operating losses of an investee or other factors may indicate that a decrease in value of the Company's investment in the unconsolidated entity has occurred which is other-than-temporary. The amount of impairment recognized is the excess of the investment's carrying amount over its estimated fair value, which may be below the balance of any non-recourse mortgage financing. If a property level impairment is recorded by an unconsolidated entity related to its assets, the Company's proportionate share is reflected in the equity in loss from unconsolidated entities with a corresponding decrease to its investment in unconsolidated entities. In the event the property were to be under development, the estimate of future cash flows includes all future expenditures necessary to develop the property. If the carrying amount exceeds the aggregate future cash flows, we would recognize an impairment loss to the extent the carrying amount exceeds the fair market value of the property
	Additionally, the Company considers various qualitative factors to determine if a decrease in the value of the investment is other-than-temporary. These factors include age of the venture, intent and ability for the Company to recover its investment in the entity, financial condition and long-term prospects of the entity and its underlying real estate assets, short-term liquidity needs of the unconsolidated entity, trends in the economic environments or leasing markets where its real estate assets are located, overall projected returns on investment, and any defaults under contracts with third parties (including bank debt). If the Company believes that the decline in the fair value of the investment is temporary, then no impairment is recorded.
Purchase Accounting for Acquisition of Investments in Real Estate	Purchase Accounting for Acquisition of Investments in Real Estate
	We apply the business combination method to all acquired real estate investments. The purchase consideration of the real estate is allocated to the acquired tangible assets, consisting primarily of land, site improvements, building and tenant improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases, value of tenant relationships and acquired ground leases, based in each case on their fair values. Loan premiums, in the case of above-market rate loans, or loan discounts, in the case of below-market loans, will be recorded based on the fair value of any loans assumed in connection with acquiring the real estate.
	The fair value of the tangible assets of an acquired property is determined by valuing the property as if it were vacant, and the "as-if-vacant" value is then allocated to all land (or acquired ground lease if the land is subject to a ground lease) and site improvements based on management's determination of the relative fair values of these assets. Management determines the as-if-vacant fair value of a property by underwriting the property as if it were vacant and subsequently re-leased at the market. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses associated with the property. Management also estimates costs to execute similar leases including leasing commissions and tenant improvements.
	In allocating the purchase consideration of the identified intangible assets and liabilities of an acquired property, above-market and below-market in-place lease values are recorded based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases; and (ii) management's estimate of fair market lease rates for the corresponding in-place leases measured over a period equal to the remaining non-cancelable term of the lease and, for below-market leases, over a period equal to the initial term plus any below-market fixed rate renewal periods. The capitalized below-market lease values, also referred to as acquired lease obligations, are amortized as an increase to rental income over the initial terms of the respective leases and any below-market fixed rate renewal periods. The capitalized above-market lease values are amortized as a decrease to rental income over the initial terms of the prospective leases.
	The aggregate value of other acquired intangible assets, consisting of in-place leases and tenant relationships, is measured by the estimated cost of operations during a theoretical lease-up period to replace in-place leases, including lost revenues and any unreimbursed operating expenses, plus an estimate of deferred leasing commissions for in-place leases. This aggregate value is allocated between in-place lease value and tenant relationships based on management's evaluation of the specific characteristics of each tenant's lease; however, the value of tenant relationships has not been separated from in-place lease value for the real estate acquired as such value and its consequence to amortization expense is immaterial for these particular acquisitions. Should future acquisitions of properties result in allocating material amounts to the value of tenant relationships, an amount would be separately allocated and amortized over the estimated life of the relationship. The value of in-place leases is amortized to expense over the remaining non-cancelable periods of the respective leases. If a lease were to be terminated prior to its stated expiration, all unamortized amounts relating to that lease would be written-off.
Comprehensive Income (Loss)	Comprehensive Income (Loss)
	Comprehensive income (loss) consists of net income (loss) and other comprehensive income (loss). In the accompanying consolidated balance sheets, accumulated other comprehensive income (loss) consists of foreign currency translation adjustments and swap fair value adjustments for the qualifying portion of designated hedges.
Revenue Recognition and Valuation of Receivables	Revenue Recognition and Valuation of Receivables
	All leases are classified as operating leases and minimum rents are recognized on a straight-line basis over the terms of the leases. The excess of rents recognized over amounts contractually due pursuant to the underlying leases is recorded as deferred rent. In connection with various leases, we have received irrevocable stand-by letters of credit totaling $20.3 million and $14.5 million as security for such leases at December 31, 2014 and 2013, respectively.
	Reimbursements from tenants, consisting of amounts due from tenants for common area maintenance, real estate taxes, insurance and other recoverable costs, are recognized as revenue in the period the expenses are incurred. Tenant reimbursements are recognized and presented on a gross basis, when we are the primary obligor with respect to incurring expenses and with respect to having the credit risk.
	In addition, rental revenue is impacted by management’s evaluation of whether we or the tenant is the owner of tenant improvements. The determination of whether we are or the tenant is the owner of the tenant improvements for accounting purposes is subject to significant judgment. When we conclude that we are not the owner and the tenant is the owner of tenant improvements for accounting purposes, we record our contribution towards those improvements as a lease incentive, which is amortized as a reduction to rental revenue on a straight-line basis over the term of the related lease, and rental revenue recognition begins when the tenant takes possession of or controls the space.
	Tenant receivables and deferred rent receivables are carried net of the allowances for uncollectible current tenant receivables and deferred rent. Management's determination of the adequacy of these allowances is based primarily upon evaluations of historical loss experience, individual receivables, current economic conditions, and other relevant factors. The allowances are increased or decreased through the provision for bad debts.
Translation of Non-U.S. Currency Amounts	Translation of Non-U.S. Currency Amounts
	The financial statements and transactions of our United Kingdom real estate operation are recorded in their functional currency, namely the Great Britain Pound ("GBP") and are then translated into U.S. dollars ("USD").
	Assets and liabilities of this operation are denominated in the functional currency and are then translated at exchange rates in effect at the balance sheet date. Revenues and expenses are translated at the average exchange rate for the reporting period. Translation adjustments are reported in "Accumulated Other Comprehensive Loss," a component of Shareholders' Equity.
Transition and Listing Costs	Transition and Listing Expenses
	We incurred certain costs in connection with our transition from being an externally managed company to a self-managed company ("Transition Costs"). These Transition Costs consisted of legal, consulting and other third-party service provider costs incurred by us in order to execute on our Board of Trustees' decision to become a self-managed company. The Transition Costs were primarily incurred during 2012, with the exception of $0.7 million incurred during 2013 as a final settlement of the Transition Services Agreement.
	We incurred certain costs in connection with the Listing and our Tender Offer in 2013. These Listing expenses consisted of legal, investment banking, share-based compensation, consulting and other third-party service provider costs incurred by us in order to complete the Listing and Tender Offer.
Income Taxes	Income Taxes
	We elected to be taxed as a REIT under the Internal Revenue Code commencing with our taxable year ended December 31, 2004. To qualify as a REIT, we must meet a number of organizational and operational requirements, including a requirement that we generally distribute at least 90% of our REIT taxable income (determined without regard to the dividends paid deduction and excluding net capital gain). It is our current intention to adhere to these requirements and maintain our REIT qualification. As a REIT, we generally will not be subject to corporate level U.S. federal income tax on net income we distribute currently to our shareholders. If we fail to qualify as a REIT in any taxable year, then we will be subject to U.S. federal income taxes at regular corporate rates (including any applicable alternative minimum tax) and may not be able to qualify as a REIT for four subsequent taxable years. We believe that we have met all of the REIT organizational and operational requirements for the years ended December 31, 2014, 2013 and 2012, and we were not subject to any U.S. federal income taxes, other than U.S. federal income taxes on income generated by our Taxable REIT Subsidiary. As such, we have not provided for income taxes other than as addressed below.
	ASC 740-10 Income Taxes requires recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements or tax returns. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse.
	We recognize deferred tax assets to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If we determine that we would be able to realize our deferred tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.
	No deferred tax assets or liabilities were recorded as of December 31, 2014, other than as mentioned below related to the United Kingdom net operating losses. In addition, we believe that any current or deferred tax liability associated with our Taxable REIT Subsidiary would be de minimis.
	We record uncertain tax positions in accordance with ASC 740 on the basis of a two-step process in which (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position, and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.
	We did not have any uncertain tax positions which would require us to record any unrecognized tax benefits or additional tax liabilities as of December 31, 2014.
	Even if we qualify for taxation as a REIT, we may be subject to certain state, foreign, and local taxes on our income and property and to U.S. federal income and excise taxes on our undistributed taxable income, if any.
	Included as a component of our tax provision, we have incurred income and other taxes (franchise, local and state government and international) related to our continuing operations in the amount of $0.8 million, $0.3 million and $0.3 million during the years ended December 31, 2014, 2013 and 2012, respectively.
	The United Kingdom taxes real property operating results at a statutory rate of 20%. The properties which we hold in the United Kingdom have operated at a taxable loss to date and have generated a deferred tax asset of approximately $0.6 million consisting of these net operating loss carryforwards. We have provided for a full valuation allowance of $0.6 million as of December 31, 2014 on deferred tax assets because it is not likely that future operating profits in the United Kingdom would be sufficient to absorb the net operating losses.
	The tax years from 2010 through 2014 remain open to examination by the taxing jurisdictions to which the Company is subject.
Deferred Financing Costs and Note Premiums/Discounts	Deferred Financing Costs and Note Premiums/Discounts
	Direct costs incurred in connection with obtaining financing are amortized over the respective term of the loan on a straight-line basis, which approximates the effective interest method.
	Discounts/premiums on notes payable are amortized to interest expense based on the effective interest method.
Fair Value of Financing Instruments and Investments	Fair Value of Financial Instruments and Investments
	We generally determine or calculate the fair value of financial instruments using appropriate present value or other valuation techniques, such as discounted cash flow analyses, incorporating available market discount rate information for similar types of instruments and our estimates for non-performance and liquidity risk. These techniques are significantly affected by the assumptions used, including the discount rate, credit spreads, and estimates of future cash flow. The Investment Manager of CBRE Strategic Partners Asia applies valuation techniques for our investment carried at fair value based upon the application of the income approach, the direct market comparison approach, the replacement cost approach or third party appraisals to the underlying assets held in the unconsolidated entity in determining the net asset value attributable to our ownership interest therein. As of December 31, 2014, the financial assets and liabilities recorded at fair value in our consolidated financial statements are our derivative instruments and our investment in CBRE Strategic Partners Asia.
	The remaining financial assets and liabilities which are only disclosed at fair value are comprised of all other notes payable, the unsecured line of credit and other debt instruments. We determined the fair value of our secured notes payable and other debt instruments by performing discounted cash flow analyses using an appropriate market discount rate. We calculate the market discount rate by obtaining period-end treasury rates for fixed-rate debt, or London Inter-Bank Offering Rate ("LIBOR") rates for variable-rate debt, for maturities that correspond to the maturities of our debt and then adding an appropriate credit spread derived from information obtained from third-party financial institutions. These credit spreads take into account factors such as our credit standing, the maturity of the debt, whether the debt is secured or unsecured, and the loan-to-value ratios of the debt.
	The carrying amounts of our cash and cash equivalents, restricted cash, tenant and other receivable and accounts payable approximate fair value due to their short-term maturities.
Share-based Compensation	Share-based Compensation
	For share-based awards for which there is no pre-established performance period, we recognize compensation costs over the service vesting period, which represents the requisite service period, on a straight-line basis.
	For share-based awards in which the performance period precedes the grant date, we recognize compensation costs straight-lined over the requisite service period, which includes both the performance and service vesting periods. The requisite service period begins on the date the Compensation Committee of the Board of Trustees authorizes the award and adopts any relevant performance measures.
	During the performance period for a share-based award program, we estimate the total compensation cost of the potential future awards. We then record compensation costs equal to the portion of the requisite service period that has elapsed through the end of the reporting period.
	For share-based awards granted by the Company, CSP OP issues a number of common units equal to the number of common shares ultimately granted by us in respect of such awards.
New Accounting Standards	New Accounting Standards
	In April 2014, the FASB issued ASU No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which requires only disposals representing a strategic shift in operations (i.e., a disposal of a major geographic area, a major line of business, or a major equity method investment) to be presented as discontinued operations. The standard also requires expanded disclosures about discontinued operations and is intended to provide financial statement users with information about the ongoing trends in a company's results from continuing operations. ASU No. 2014-08 is effective in the first quarter of 2015 for public entities with calendar year ends. However, companies are permitted to early adopt the standard, beginning in the first quarter of 2014, but only for disposals or classifications as held for sale that have not been reported in financial statements previously issued or available for issuance. We early adopted this standard in the first quarter of 2014 and the adoption did not have a material effect on our financial condition, results of operations, or disclosures.
	In May 2014, the FASB and IASB issued their final standard on revenue from contracts with customers. The standard, issued by the FASB as ASU 2014-09, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including the guidance on real estate derecognition for most transactions. Entities have the option of using either a full retrospective or a modified approach to adopt the guidance in ASU 2014-09. For public entities, the ASU is effective for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. Early application is not permitted. We are assessing the impact of this guidance on our consolidated financial statements and notes to our consolidated financial statements.
	In June 2014, the FASB issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The ASU clarifies that entities should treat performance targets that can be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense (measured as of the grant date without taking into account the effect of the performance target) related to an award for which transfer to the employee is contingent on the entity’s satisfaction of a performance target until it becomes probable that the performance target will be met. ASU No. 2014-12 will be effective for all entities for reporting periods (including interim periods) beginning after December 15, 2015, and early adoption is permitted. ASU 2014-12 may be adopted either prospectively for share-based payment awards granted or modified on or after the effective date, or retrospectively, using a modified retrospective approach. The modified retrospective approach would apply to share-based payment awards outstanding as of the beginning of the earliest annual period presented in the financial statements on adoption, and to all new or modified awards thereafter. The adoption of this guidance is not anticipated to have a material impact on our consolidated financial statements or notes to our consolidated financial statements.
	In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. The ASU provides guidance on determining when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date the financial statements are issued. An entity must provide certain disclosures if conditions or events raise substantial doubt about the entity’s ability to continue as a going concern. The ASU applies to all entities and is effective for annual periods ending after December 15, 2016, and interim periods thereafter, with early adoption permitted. The adoption of this guidance is not anticipated to have a material impact on our consolidated financial statements or notes to our consolidated financial statements.
	In March 2013, the FASB issued ASU No. 2013-05, Foreign Currency Matters (Topic 830): Parent's Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity. ASU 2013-05 specifies that a cumulative translation adjustment (CTA) is attached to a parent company’s investment in a foreign entity and should be released in a manner consistent with derecognition guidance on investments in entities. Therefore, the entire amount of the CTA associated with a foreign entity would be released upon 1) sale of a subsidiary or group of net assets within a foreign entity, which represents the substantially complete liquidation of the investment in the entity, 2) loss of a controlling financial interest in an investment in a foreign entity, or 3) step acquisition of a foreign entity. ASU 2013-05 does not change the requirement to release a pro rata portion of the CTA of the foreign entity into earnings for a partial sale of an equity method investment in a foreign entity. ASU 2013-05 is effective for interim periods and fiscal years beginning on or after December 15, 2013, with early adoption permitted. We have applied the guidance prospectively to any derecognition events that occurred after the effective date and do not expect the adoption of ASU 2013-05 to have a material impact on our consolidated results of operations or financial position.

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Schedule Of Real Estate Investments	Our investments in real estate are stated at depreciated cost. Depreciation and amortization are recorded on a straight-line basis over the estimated useful lives as follows:
	Asset Description		Depreciable Lives
	Buildings and Improvements		39 years
	Site Improvements		15 - 25 years
	Tenant Improvements		Shorter of the useful lives or the terms of the related leases
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure	Prepaid expenses and other assets consisted of the following as of December 31, 2014 and 2013 (in thousands):
		December 31,
		2014		2013
	Prepaid Insurance and Real Estate Taxes	$	3,022	$	2,699
	Tenant Lease Inducement, Net	13,927		3,274
	Acquisition Deposit	—		2,750
	Derivative Asset	1,733		5,211
	Other	2,930		2,823
	Total	$	21,612	$	16,757

Investment_in_Real_Estate_Acti1

Investment in Real Estate Activity (Tables)	12 Months Ended
	Dec. 31, 2014
Real Estate [Abstract]
Schedule of Real Estate Properties
	Property		Market				Date of		Purchase				Net		% Leased at 12/31/14
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)			Property Type
	445 Airtech Parkway(1)		Indianapolis		IN		1/2/14		$	30,200			622,440		100%	Industrial
	1 Rocket Road(2)		Los Angeles - South Bay		CA		7/31/14		46,650				514,753		100%	Industrial
	1659 Sauget Business Blvd		St. Louis		MO		10/24/14		21,100				502,500		100%	Industrial
	325 Center Point Blvd		Northeast		PA		11/18/14		45,750				744,080		100%	Industrial
	550 Oak Ridge Drive		Northeast		PA		11/18/14		40,700				615,600		100%	Industrial
	125 Capital Road		Northeast		PA		11/18/14		8,700				144,000		100%	Industrial
	14-46 Alberigi Drive		Northeast		PA		11/18/14		10,500				140,800		100%	Industrial
	Total 2014 Wholly-Owned Property Acquisitions								$	203,600			3,284,173
	________
	-1	The purchase price includes a $2.8 million deposit paid during the fourth quarter of 2013.
	-2	In connection with this acquisition, we assumed secured debt with an outstanding principal balance of $18.7 million that was recorded at fair value on the acquisition date, resulting in a premium of approximately $2.6 million.
	During the year ended December 31, 2013, we acquired two office/industrial properties. The acquisitions were funded with proceeds from our unsecured revolving credit facility.
	Property		Market				Date of		Purchase				Net		% Leased at 12/31/14
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)			Property Type
	Carpenter Corporate Center I and II		Dallas		TX		7/31/13		$	49,509			226,822		100%	Office
	1200 Woods Chapel Road		Spartanburg		SC		8/8/13		10,750				156,800		100%	Industrial
	Total 2013 Wholly-Owned Property Acquisitions								$	60,259			383,622
	As of December 31, 2014 and 2013, we owned the following number of properties through unconsolidated entities:
				Number of Properties
				December 31,
		Ownership %		2014			2013
	Duke JV	80.00%		14			18
	European JV	80.00%		9			9
	UK JV	80.00%		3			3
	CBRE Strategic Partners Asia	5.07%		3			3
				29			33
Schedule of Purchase Price Allocation to Assets and Liabilities Acquired	The following table summarizes the final allocation of the fair value of amounts recognized for each major class of assets and liabilities for properties acquired during the year ended December 31, 2013 (in thousands):
		2013 Acquisitions
		Carpenter Corporate				1200 Woods Chapel Road				Total
		Center I & II
	Land	$	5,901			$	1,560			$	7,461
	Building and Improvements	35,950				7,357				43,307
	Acquired In-Place Leases (1)	7,795				1,237				9,032
	Acquired Above-Market Leases (1)	481				596				1,077
	Total Acquired Assets	50,127				10,750				60,877
	Acquired Below-Market Leases (2)	618				—				618
	Total Assumed Liabilities	618				—				618
	Net Assets Acquired	$	49,509			$	10,750			$	60,259
	__________
	-1	Represents in-place leases with a weighted average amortization period of 9.34 years and above-market leases with a weighted average amortization period of 7.56 years.
	-2	Represents below-market leases with a weighted average amortization period of 9.92 years.
	The following table summarizes the final allocation of the fair value of amounts recognized for each major class of assets and liabilities (in thousands):
	Land	$	60,310
	Building and Improvements	364,174
	Acquired In-Place Leases(1)	64,217
	Acquired Above-Market Leases(1)	21,055
	Total Acquired Assets	509,756
	Secured Notes Payable, Net(2)	229,539
	Acquired Below-Market Leases(3)	5,549
	Total Assumed Liabilities	235,088
	Fair Value of Acquired Net Assets (Represents 100% Interest)	$	274,668
	__________
	-1	Represents in-place leases with a weighted average amortization period of 6.84 years and above-market leases with a weighted average amortization period of 7.81 years.
	-2	Secured notes payable is presented net of a premium of $13.5 million.
	-3	Represents below-market leases with a weighted average amortization period of 7.83 years.
	The following table summarizes the allocation of the fair value of amounts recognized for each major class of assets and liabilities for properties acquired during the year ended December 31, 2014 (in thousands):
			2014 Acquisitions
			445 Airtech Parkway (1)				1 Rocket				1659			325			550		125		14-46		Total
							Road (2)				Sauget			Centerpoint			Oak Ridge		Capital Road (2)		Alberigi
											Business			Blvd (2)			Drive (2)				Drive (2)
											Blvd (2)
	Assets
	Land		$	5,666			$	15,887			$	1,515		$	5,856		$	8,134	$	1,759	$	2,444	$	41,261
	Land Available for Expansion		1,070				—				—			—			—		—		—		1,070
	Building and Improvements		19,443				30,774				17,524			35,009			28,859		6,098		6,892		144,599
	Acquired In-Place Leases(3)		2,596				4,541				1,311			2,764			2,905		693		888		15,698
	Acquired Above-Market Leases(4)		—				—				338			170			47		—		211		766
	Deferred Leasing Costs(5)		—				947				467			1,951			755		150		297		4,567
	Other Intangible Assets(6)		1,425				—				—			—			—		—		16		1,441
	Prepaid Expenses and Other Assets		—				180				—			—			330		—		—		510
	Total Assets Acquired		30,200				52,329				21,155			45,750			41,030		8,700		10,748		209,912
	Liabilities
	Acquired Below-Market Leases(7)		—				2,894				55			—			—		—		248		3,197
	Secured Notes Payable, Net		—				21,281				—			—			—		—		—		21,281
	Other Liabilities Assumed		216				260				164			—			2,843		—		—		3,483
	Total Assumed Liabilities		216				24,435				219			—			2,843		—		248		27,961
	Net Assets Acquired		$	29,984			$	27,894			$	20,936		$	45,750		$	38,187	$	8,700	$	10,500	$	181,951
	__________
	-1	Represents final allocation of the fair value of amounts recognized for each major class of assets and liabilities.
	-2	Represents preliminary allocation of the fair value of amounts recognized for each major class of assets and liabilities.
	-3	Represents acquired in-place leases with a weighted average amortization period of 6.17 years.
	-4	Represents acquired below-market leases with a weighted average amortization period of 4.63 years.
	-5	Represents deferred leasing costs with weighted average amortization period of 4.65 years.
	-6	Represents other intangible assets with a weighted average amortization period of 9.92 years.
	-7	Represents acquired below-market leases with a weighted average amortization period of 8.21 years.
Pro Forma Operations	Non-recurring acquisition costs totaling $2.3 million are included in the year ended December 31, 2013 as an operating expense. Non-recurring acquisition costs totaling $2.7 million are excluded from the 2013 pro forma results and are included in the year ended December 31, 2012 as an operating expense. These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisitions actually occurred on January 1, 2013 and 2012 and may not be indicative of future operating results (in thousands, except share data):
		Year Ended December 31,
		2013				2012
	Revenues	$	284,242			$	246,276
	Net Operating Income	207,585				178,704
	Net Income	19,621				30,970
	Basic and Diluted Net Income per Share	$	0.08			$	0.12
	Weighted Average Common Shares Outstanding - Basic and Diluted	242,379,680				248,154,277
	The following table summarizes the combined results from operations for the 2014 acquisitions from their respective dates of acquisition through December 31, 2014 (in thousands):
	Revenues	$	5,709
	Net Income	$	99
	We previously included the results from operations of the Duke Portfolio in equity in earnings:
	Revenues	$	50,142
	Net income	$	1,612
	The following table summarizes the combined results from operations for Carpenter Corporate Center I & II and 1200 Woods Chapel Road from July 31, 2013 and August 8, 2013, the respective dates of acquisition, through December 31, 2013 (in thousands):
	Revenues	$	2,184
	Net Income	$	726
	Non-recurring acquisition costs totaling $2.3 million are excluded from the 2014 pro forma results and are included in the year ended December 31, 2013 as an operating expense. These pro forma results do not purport to be indicative of what operating results would have been had the acquisitions actually occurred on January 1, 2013 and may not be indicative of future operating results (in thousands, except share data):
		Year Ended December 31,
		2014				2013
	Revenues	$	284,494			$	268,591
	Net Operating Income	205,651				195,907
	Net Income	24,637				86,291
	Basic and Diluted Net Income per Share	$	0.1			$	0.35
	Weighted Average Common Shares Outstanding - Basic and Diluted	236,866,656				242,379,680
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]	The following table summarizes properties sold during the years ended December 31, 2014, 2013 and 2012 ($ in thousands):
	Property		Market				Date of Disposition		Net Rentable Square Feet			Gross Sales			Property Type
												Price
	2014 Dispositions
	Maskew Retail Park		Peterborough		UK		7/23/14		144,400			$	62,978		Retail
	12650 Ingenuity Drive		Orlando		FL		11/18/14		124,500			26,500			Office
	Thames Valley Five		Reading		UK		11/24/14		40,468			18,781			Office
	Deerfield Commons		Atlanta		GA		12/16/14		121,969			19,400			Office
	Total 2014 Property Dispositions								431,337			$	127,659
	2013 Dispositions
	Albion Mills Retail Park		Wakefield		UK		11/29/13		55,294			$	17,253		Retail
	Summit Distribution Center		Salt Lake City		UT		12/20/13		275,080			13,800			Industrial
	Total 2013 Property Dispositions								330,374			$	31,053
	2012 Dispositions
	Cherokee Corporate Park (1)		Spartanburg		SC		7/9/12		60,000			$	3,125		Industrial
	__________
	-1	The Company recognized a loss from discontinued operatixons of $0.4 million in 2012 associated with a write-down of the property to its net sales value.
	The following table summarizes the income and expense components for 2013 and 2012 dispositions that comprise discontinued operations for the years ended December 31, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2013				2012
	Revenues:
	Rental	$	1,755			$	2,311
	Tenant Reimbursements	275				372
	Total Revenues	2,030				2,683
	Expenses:
	Property Operating	248				338
	Real Estate Taxes	197				133
	Depreciation and Amortization	607				1,270
	Total Expenses	1,052				1,741
	Interest and Other (Expense) Income	(80		)		283
	Interest Expense	(420		)		(505		)
	Loss on Early Extinguishment of Debt	(96		)		—
	Total Other Expenses	(596		)		(222		)
	Income from Discontinued Operations	382				720
	Gain (Loss) from Sale of Real Estate	2,759				(413		)
	Total Income from Discontinued Operations	$	3,141			$	307

Investments_in_Unconsolidated_1

Investments in Unconsolidated Entities (Tables)	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Real Estate Properties
	Property		Market				Date of		Purchase				Net	% Leased at 12/31/14
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)		Property Type
	445 Airtech Parkway(1)		Indianapolis		IN		1/2/14		$	30,200			622,440	100%	Industrial
	1 Rocket Road(2)		Los Angeles - South Bay		CA		7/31/14		46,650				514,753	100%	Industrial
	1659 Sauget Business Blvd		St. Louis		MO		10/24/14		21,100				502,500	100%	Industrial
	325 Center Point Blvd		Northeast		PA		11/18/14		45,750				744,080	100%	Industrial
	550 Oak Ridge Drive		Northeast		PA		11/18/14		40,700				615,600	100%	Industrial
	125 Capital Road		Northeast		PA		11/18/14		8,700				144,000	100%	Industrial
	14-46 Alberigi Drive		Northeast		PA		11/18/14		10,500				140,800	100%	Industrial
	Total 2014 Wholly-Owned Property Acquisitions								$	203,600			3,284,173
	________
	-1	The purchase price includes a $2.8 million deposit paid during the fourth quarter of 2013.
	-2	In connection with this acquisition, we assumed secured debt with an outstanding principal balance of $18.7 million that was recorded at fair value on the acquisition date, resulting in a premium of approximately $2.6 million.
	During the year ended December 31, 2013, we acquired two office/industrial properties. The acquisitions were funded with proceeds from our unsecured revolving credit facility.
	Property		Market				Date of		Purchase				Net	% Leased at 12/31/14
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)		Property Type
	Carpenter Corporate Center I and II		Dallas		TX		7/31/13		$	49,509			226,822	100%	Office
	1200 Woods Chapel Road		Spartanburg		SC		8/8/13		10,750				156,800	100%	Industrial
	Total 2013 Wholly-Owned Property Acquisitions								$	60,259			383,622
	As of December 31, 2014 and 2013, we owned the following number of properties through unconsolidated entities:
				Number of Properties
				December 31,
		Ownership %		2014			2013
	Duke JV	80.00%		14			18
	European JV	80.00%		9			9
	UK JV	80.00%		3			3
	CBRE Strategic Partners Asia	5.07%		3			3
				29			33
Investments in Unconsolidated Entities	Investments in unconsolidated entities at December 31, 2014 and 2013 consist of the following (in thousands):
		December 31,
		2014				2013
	Duke JV	$	239,376			$	292,548
	European JV	144,141				174,272
	UK JV	33,189				36,794
	Afton Ridge(1)	117				1,512
	CBRE Strategic Partners Asia	6,870				9,676
		$	423,693			$	514,802
	__________
	-1	Amount at December 31, 2013 represents cash and an escrow holdback at the joint venture. The Afton Ridge Shopping Center was sold during December 2013.
Summary of Investments in Unconsolidated Entities	The following is a summary of the investments in unconsolidated entities for the years ended December 31, 2014 and 2013 (in thousands):
		December 31,
		2014				2013
	Investment Balance, January 1,	$	514,802			$	515,829
	Contributions	7,625				210,745
	Company's Equity in Net Income (including adjustments for basis differences)	28,823				12,111
	Other Comprehensive Income of Unconsolidated Entities	(22,342		)		7,293
	Conversion of Duke JV Equity Investment to Controlling Interest	—				(139,558		)
	Distributions	(105,215		)		(91,618		)
	Investment Balance, December 31,	$	423,693			$	514,802
Consolidated Balance Sheet	The following is the consolidated balance sheet of the Duke JV as of December 31, 2014 and 2013 (in thousands):
		December 31,
		2014				2013
	Assets
	Investments in Real Estate (1)	$	323,236			$	403,818
	Real Estate Investments and Other Assets Held-for-Sale	17,230				—
	Other Assets	32,474				52,085
	Total Assets	$	372,940			$	455,903
	Liabilities and Equity
	Liabilities Related to Real Estate Investments Held-for-Sale	$	11,048			$	—
	Secured Notes Payable, net	56,891				79,761
	Other Liabilities	6,344				11,055
	Total Liabilities	74,283				90,816
	CSP Equity	239,376				292,548
	Other Investors' Equity	59,281				72,539
	Total Liabilities and Equity	$	372,940			$	455,903
	__________
	-1	Includes REIT Basis Adjustments for costs incurred by the Company outside of the Duke JV that are directly capitalizable to its investment in real estate assets acquired, including acquisition costs paid to our former investment advisor prior to January 1, 2009.
	The following is the combined balance sheets of our investments in unconsolidated entities as of December 31, 2014 and 2013 (in thousands):
		December 31,
		2014				2013
	Assets
	Investments in Real Estate (1)(2)(3)	$	783,724			$	955,899
	Real Estate Investments and Other Assets Held-for-Sale	17,230				—
	Other Assets(3)	93,462				142,816
	Total Assets	$	894,416			$	1,098,715
	Liabilities and Equity
	Liabilities Related to Real Estate Investments Held-for-Sale	$	11,048			$	—
	Secured Notes Payable, Net	192,064				233,412
	Other Liabilities(2)	31,651				40,439
	Total Liabilities	234,763				273,851
	CSP Equity	423,693				514,801
	Other Investors' Equity	235,960				310,063
	Total Liabilities and Equity	$	894,416			$	1,098,715
	__________
	-1	Includes REIT Basis Adjustments for costs incurred by the Company outside of the Duke JV that are directly capitalizable to its investment in real estate assets acquired, including acquisition costs paid to our former investment advisor prior to January 1, 2009.
	The following is the consolidated balance sheet of the European JV as of December 31, 2014 and 2013 (in thousands):
		December 31,
		2014				2013
	Assets
	Investments in Real Estate(1)(2)	$	274,128			$	311,205
	Other Assets(2)	49,435				71,713
	Total Assets	$	323,563			$	382,918
	Liabilities and Equity
	Secured Notes Payable, net	$	135,173			$	153,651
	Other Liabilities(1)	8,214				11,427
	Total Liabilities	143,387				165,078
	CSP Equity	144,141				174,272
	Other Investors' Equity	36,035				43,568
	Total Liabilities and Equity	$	323,563			$	382,918
	__________
	-1	Effective 2013, the intangible liabilities, which was formerly included in Investment in Real Estate has been reclassified into Other Liabilities. Amount reclassified was $3.4 million in 2013 and $2.5 million in 2014.
	-2	Effective 2013, the Deferred Leasing Assets, which was formerly included in Investment in Real Estate has been reclassified into Other Assets. The amount reclassified was $35.9 million in 2013 and $27.1 million in 2014.
Consolidated Statement of Operations	The following is the consolidated statements of operations of the European JV for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014				2013				2012
	Total Revenue	$	29,322			$	19,581			$	11,947
	Operating Expenses	3,510				3,631				1,824
	Net Operating Income	25,812				15,950				10,123
	Acquisition and Related Expense	—				4,778				39
	Depreciation and Amortization	12,100				7,636				5,388
	Interest Expense	4,502				2,400				462
	Net Income	9,210				1,136				4,234
	CSP Equity in Net Income	$	7,367			$	909			$	3,387
	The combined statements of operations for our investments in unconsolidated entities for the years ended December 31, 2014, 2013 and 2012 are as follows (in thousands):
		Year Ended December 31,
		2014				2013				2012
	Total Revenue	$	89,670			$	131,166			$	153,131
	Operating Expenses	24,069				29,917				50,204
	Net Operating Income	65,601				101,249				102,927
	Acquisition and Related Expense	—				4,778				686
	Depreciation and Amortization	40,538				41,457				68,714
	Interest Expense	8,600				13,673				26,516
	Gain from Sales of Real Estate	17,033				3,628				—
	Loss on Extinguishment of Debt	(1,723		)		—				—
	Income from Continuing Operations	31,773				44,969				7,011
	Gain (Loss) from Discontinued Operations	18				(841		)		—
	Net Income	31,791				44,128				7,011
	Company Share in Net Income	28,962				12,228				4,088
	Adjustments for REIT basis	(139		)		(117		)		(129		)
	CSP Equity in Net Income	$	28,823			$	12,111			$	3,959
	The following is the consolidated statements of operations of the Duke JV for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014				2013				2012
	Total Revenue	$	57,877			$	67,500			$	125,333
	Operating Expenses	17,572				20,698				42,102
	Net Operating Income	40,305				46,802				83,231
	Depreciation and Amortization	26,352				30,568				59,663
	Interest Expense	4,098				10,500				24,551
	Gain on Sale of Real Estate	17,033				—				—
	Loss on Extinguishment of Debt	(1,723		)		—				—
	Income (Loss) from Continuing Operations	25,165				5,734				(983		)
	Gain (Loss) from Discontinued Operations	18				(841		)		—
	Net Income (Loss)	25,183				4,893				(983		)
	Company Share in Net Income	20,147				3,914				(786		)
	Adjustments for REIT basis	(139		)		448				(110		)
	CSP Equity in Net Income	$	20,008			$	4,362			$	(896	)

Deferred_Leasing_Costs_and_Int1

Deferred Leasing Costs and Intangible Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The following table summarizes our deferred leasing costs and intangible assets, including acquired above-market leases, acquired in-place leases and other intangible assets and intangible liabilities, including acquired below-market leases and acquired above-market ground lease obligations (in thousands):
		December 31,
		2014			2013
	Deferred Leasing Costs and Intangible Assets, Net:
	Deferred Leasing Costs	$	22,481		$	11,243
	Accumulated Amortization	(4,218		)	(3,016		)
	Deferred Leasing Costs, Net	18,263			8,227
	Above-Market Leases	63,566			77,180
	Accumulated Amortization	(30,311		)	(33,577		)
	Above-Market Leases, Net	33,255			43,603
	In-Place Leases	300,124			321,776
	Accumulated Amortization	(132,414		)	(124,734		)
	In-Place Leases, Net	167,710			197,042
	Other Intangible Assets	1,425			—
	Accumulated Amortization	(163		)	—
	Other Intangible Assets, Net	1,262			—
	Total Deferred Leasing Costs and Intangible Assets, Net	$	220,490		$	248,872
	Intangible Liabilities, Net:
	Below-Market Leases	$	51,653		$	49,751
	Accumulated Amortization	(26,675		)	(23,022		)
	Below-Market Leases, Net	24,978			26,729
	Above-Market Ground Lease Obligation	1,501			1,501
	Accumulated Amortization	(231		)	(160		)
	Above-Market Ground Lease Obligation, Net	1,270			1,341
	Total Intangible Liabilities, Net	$	26,248		$	28,070
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	The following table sets forth amortization related to intangible assets and liabilities for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014			2013			2012
	Deferred Leasing Costs(1)	$	1,731		$	1,314		$	714
	Above-Market Leases(2)	9,498			10,374			7,658
	In-Place Leases(1)	37,222			36,653			28,826
	Other Intangible Assets(1)	163			—			—
	Below-Market Leases(2)	(4,206		)	(3,972		)	(5,173		)
	Above-Market Ground Lease Obligation(3)	(71		)	(71		)	(71		)
	__________
	-1	The amortization of deferred leasing costs, in-place leases, and other intangible assets are recorded to depreciation and amortization expense in the condensed consolidated statements of operations for the periods presented.
	-2	The amortization of above-market leases and below-market leases are recorded as reductions and additions to rental income, respectively, in the condensed consolidated statements of operations for the periods presented.
	-3	The amortization of the above-market ground lease obligation is recorded as a decrease to property operating expense in the condensed consolidated statements of operations for the periods presented.
Schedule of Future Amortization of Acquisition Related Intangible Assets and Liabilities	The following is a schedule of future amortization of deferred leasing costs, intangible assets and liabilities as of December 31, 2014 (in thousands):
		Intangible Assets											Intangible Liabilities
		Deferred Leasing			Acquired			Acquired			Other		Acquired		Above-
		Costs			Above-			In-Place			Intangible		Below-		Market
					Market			Leases			Assets		Market		Ground Lease
					Leases								Leases		Obligations
	2015	$	1,794		$	8,464		$	36,606		$	144	$	4,558	$	71
	2016	1,644			5,557			29,727			144		3,590		71
	2017	1,497			4,466			25,254			144		3,098		71
	2018	1,446			3,862			21,050			144		2,825		71
	2019	1,299			3,300			17,284			144		2,604		71
	Thereafter	10,583			7,606			37,789			542		8,303		915
		$	18,263		$	33,255		$	167,710		$	1,262	$	24,978	$	1,270

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Notes Payable Secured by Real Property	Secured notes payable are summarized as follows (in thousands):
	Property		Stated		Effective Interest Rate(1)		Maturity Date		Outstanding Balance
			Interest Rate						December 31,
									2014			2013
	One Wayside Road(2)		5.66%		5.25%		8/1/15		$	12,938		$	13,352
	One Wayside Road(2)		5.92%		5.25%		8/1/15		10,854			11,169
	Lakeside Office Center		6.03%		6.03%		9/1/15		8,617			8,743
	Celebration Office Center III(3)		4.25%		2.50%		12/1/15		8,817			8,998
	22535 Colonial Pkwy(3)		4.25%		2.50%		12/1/15		7,889			8,051
	Northpoint III(3)		4.25%		2.50%		12/1/15		10,209			10,419
	Goodyear Crossing II(3)		4.25%		2.50%		12/1/15		19,489			19,891
	3900 North Paramount Parkway(3)		4.25%		2.50%		12/1/15		7,656			7,815
	3900 South Paramount Parkway(3)		4.25%		2.50%		12/1/15		7,656			7,815
	1400 Perimeter Park Drive(3)		4.25%		2.50%		12/1/15		2,320			2,368
	Miramar I(3)		4.25%		2.50%		12/1/15		9,095			9,283
	Miramar II(3)		4.25%		2.50%		12/1/15		12,250			12,503
	70 Hudson Street		5.65%		5.15%		4/11/16		114,108			116,100
	Point West I - Swapped to Fixed		3.41%		3.41%		12/6/16		10,716			11,041
	100 Tice Blvd		5.97%		4.38%		9/15/17		18,960			19,544
	100 Tice Blvd		5.97%		4.38%		9/15/17		18,960			19,543
	4701 Gold Spike Drive(4)		4.45%		4.45%		3/1/18		9,958			10,154
	1985 International Way(4)		4.45%		4.45%		3/1/18		6,920			7,055
	3660 Deerpark Boulevard(4)		4.45%		4.45%		3/1/18		7,153			7,294
	Tolleson Commerce Park II(4)		4.45%		4.45%		3/1/18		4,301			4,386
	20000 S. Diamond Lake Road(4)		4.45%		4.45%		3/1/18		6,265			6,388
	Atrium I - swapped to fixed		3.78%		3.78%		5/31/18		21,580			22,516
	McAuley Place		3.98%		3.50%		9/1/18		12,865			13,230
	Easton III - Swapped to Fixed		3.95%		3.95%		1/31/19		6,280			6,466
	90 Hudson Street		5.66%		5.26%		5/1/19		103,301			104,928
	Fairforest Bldg. 6		5.42%		6.50%		6/1/19		1,751			2,086
	North Rhett I		5.65%		6.50%		8/1/19		1,958			2,405
	Kings Mountain II		5.47%		6.50%		1/1/20		3,467			4,043
	1 Rocket Road		6.60%		4.50%		8/1/20		18,516			—
	North Rhett II		5.20%		6.50%		10/1/20		1,425			1,628
	Mount Holly Bldg.		5.20%		6.50%		10/1/20		1,425			1,628
	Orangeburg Park Bldg.		5.20%		6.50%		10/1/20		1,449			1,656
	Kings Mountain I		5.27%		6.50%		10/1/20		1,235			1,411
	Ten Parkway North		4.75%		4.75%		1/1/21		11,469			11,777
	Union Cross Bldg. II		5.53%		6.50%		6/1/21		5,755			6,471
	Union Cross Bldg. I		5.50%		6.50%		7/1/21		1,892			2,124
	Property		Stated		Effective Interest Rate(1)		Maturity Date		Outstanding Balance
			Interest Rate						December 31,
									2014			2013
	Norman Pointe I		5.24%		3.50%		10/1/21		20,177			20,512
	Norman Pointe II		5.24%		3.50%		10/1/21		22,214			22,583
	The Landings I		5.24%		3.50%		10/1/21		15,185			15,437
	The Landings II		5.24%		3.50%		10/1/21		13,393			13,616
	Fairforest Bldg. 5		6.33%		6.50%		2/1/24		7,678			8,277
	North Rhett IV		5.80%		6.50%		2/1/25		7,862			8,414
	Avion Midrise III & IV(5)		5.52%		7.00%		4/1/14		—			19,979
	Maskew Retail Park - Swapped to Fixed(6)		5.68%		5.68%		8/10/14		—			23,161
	12650 Ingenuity Drive(7)		5.62%		7.50%		10/1/14		—			11,842
	Bolingbrook Point III(8)		5.26%		5.26%		1/1/15		—			7,900
	Deerfield Commons I(9)		5.23%		5.23%		12/1/15		—			9,290
	Total Secured Notes Payable								596,008			665,292
	Plus Premium								15,494			17,294
	Less Discount								(894		)	(1,386		)
	Total Secured Notes Payable, Net								$	610,608		$	681,200
	__________
	-1	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the amortization of any discounts/premiums, excluding debt issuance costs.
	-2	This loan was paid off in full on February 2, 2015 prior to the maturity date.
	-3	These nine loans are cross-collateralized.
	-4	These five loans are cross-collateralized.
	-5	This loan was paid off in full on January 2, 2014 prior to the maturity date.
-6	This loan was paid off in full on July 23, 2014 prior to the maturity date.
-7	This loan was paid off in full on July 1, 2014 prior to the maturity date.
The terms of our Unsecured Term Loan Facilities and outstanding balances as of December 31, 2014 and December 31, 2013 are set forth in the table below (in thousands):
Term Loan Facility		Unswapped Interest Rate		Effective Interest Rate(1)		Maturity Date		Outstanding Balance
								December 31,
								2014			2013
WF Term Loan #2(2)		LIBOR + 1.50%		2.49%		3/7/18		$	200,000		$	200,000
WF Term Loan #3(2)		LIBOR + 1.50%		3.12%		1/15/19		200,000			200,000
TD Term Loan(3)		LIBOR + 1.75%		3.28%		3/6/20		50,000			50,000
Capital One Term Loan(2)		LIBOR + 1.75%		4.32%		1/31/21		120,000			120,000
Total Unsecured Term Loan Facilities								$	570,000		$	570,000
__________
-1	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the effect of the interest rate swaps, excluding debt issuance costs.
-2	As of December 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.156% and 0.165%, respectively, for these loans.
-3	As of December 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.155% and 0.16875%, respectively, for this loan.
Unsecured Revolving Credit Facility
The terms of our unsecured revolving credit facility and outstanding balance are set forth in the table below (thousands):
	December 31,
	2014				2013
Outstanding Borrowings	$	200,044			$	170,044
Remaining Borrowing Capacity	649,956				679,956
Total Borrowing Capacity	$	850,000			$	850,000
Interest Rate(1)	1.46		%		1.47		%
Facility Fee(2)	30 bps				30 bps
Maturity Date(3)	15-Jan-18				15-Jan-18
__________
-1	Calculated based on one-month LIBOR plus 1.30% as of December 31, 2014 and December 31, 2013.
-2	The facility fee is based on the unsecured revolving credit facility's total borrowing capacity.
-3	We may exercise an option to extend the maturity date by one year.
Schedule of Maturities of Long-term Debt	The minimum principal payments due for our secured notes payable, unsecured term loan facilities and unsecured revolving credit facility are as follows as of December 31, 2014 (in thousands):
	2015	$	131,718
	2016	134,612
	2017	46,822
	2018	472,613
	2019	308,768
	Thereafter	271,519
		$	1,366,052

Risk_Management_and_Use_of_Fin1

Risk Management and Use of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swap Derivative Instruments	The following table sets forth the terms of our interest rate swaps at December 31, 2014 and 2013 (amounts in thousands):
		Notional Amount								Fair Value						Rate
	Type of Instrument	December 31, 2014				December 31, 2013				December 31, 2014			December 31, 2013			December 31, 2014		December 31, 2013		Index	Maturity Date
	Interest Rate Swap(1)	$	10,716			$	11,041			$	(135	)	$	(205	)	1.3	%	1.2	%	LIBOR	12/6/16
	Interest Rate Swap(2)	200,000				200,000				1,467			2,854			0.8	%	0.8	%	LIBOR	3/7/18
	Interest Rate Swap(1)	21,580				22,516				(354		)	(361		)	1.6	%	1.6	%	LIBOR	5/31/18
	Interest Rate Swap	200,000				200,000				(1,540		)	667			1.5	%	1.4	%	LIBOR	1/15/19
	Interest Rate Swap(1)	6,280				6,466				(127		)	(86		)	1.8	%	1.8	%	LIBOR	1/31/19
	Interest Rate Swap(2)	50,000				50,000				266			1,690			1.4	%	1.3	%	LIBOR	3/6/20
	Interest Rate Swap	120,000				120,000				(5,543		)	(1,515		)	2.4	%	2.4	%	LIBOR	1/31/21
	Interest Rate Swap(3)	—				23,161				—			(398		)	—		2.9	%	GBP LIBOR	8/10/14
	__________
	-1	We assumed this swap in connection with the purchase of the Duke Portfolio on March 1, 2013. This swap was designated as a hedging instrument under ASC 815-20 as of December 31, 2013. The swap was not designated as a hedging instrument under ASC 815-20 during the period from March 1, 2013 to March 31, 2013.
	-2	We entered into these swaps in connection with the origination of the TD Term Loan and WF Term Loan #1 in March 2013. These swaps were designated as hedging instruments under ASC 815-20 as of December 31, 2013. These swaps were not designated as a hedging instruments under ASC 815-20 during the period from March 11, 2013 and March 12, 2013, respectively, to May 29, 2013.
	-3	In connection with the Maskew Retail Park sale we paid off the secured debt with an outstanding principal of $23.8 million and terminated the related swap prior to the maturity date.
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The asset and liability balances presented in the table below reflects the gross amounts of derivatives recorded in the consolidated balance sheets (in thousands):
		Asset Derivatives										Liability Derivatives
				Fair value									Fair value
	Type of Instrument	Balance Sheet Location		December 31, 2014				December 31, 2013				Balance Sheet Location	December 31, 2014			December 31, 2013
	Derivatives designated as hedging instruments
	Interest Rate Swaps	Prepaid Expenses and Other Assets		$	1,733			$	5,211			Accounts Payable, Accrued Expenses and Other Liabilities	$	7,699		$	2,565
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)	The table below presents the effect of our derivative instruments on our consolidated statement of operations and consolidated statement of
	comprehensive income for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014				2013				2012
	Derivatives Designated as Cash Flow Hedges:
	Loss Recognized in Other Comprehensive Income (OCI) (Effective Portion)	$	(17,851	)		$	(116	)		$	(7,024	)
	Loss Reclassified from AOCI into Interest Expense (Effective Portion)	(9,169		)		(4,054		)		(4,267		)
	Net Change in Fair Value of Derivative Financial Instruments (Ineffective Portion and Amount Excluded from Effectiveness Testing)	71				38				17
	Loss on Swap Termination Recognized in Loss from Early Extinguishment of Debt	—				—				(14,306		)
	Derivatives Not Designated as Cash Flow Hedges:
	Realized and Unrealized Gain Recognized in Net Change in Fair Value of Non-Qualifying Interest Rate Swaps	$	—			$	1,772			$	564
	Net Settlement Payments from Non-Qualifying Interest Rate Swaps	—				(1,158		)		(682		)
	Loss Reclassified from AOCI into Gain on Conversion of Equity Interest to Controlling Interest	—				(1,414		)		—

Future_Minimum_Rents_Tables

Future Minimum Rents (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Schedule of Minimum Future Rents to be Received on Non-cancelable Operating Leases	The following is a schedule of future minimum rents to be received on non-cancelable operating leases from consolidated properties as of December 31, 2014 (in thousands):
	2015	$	214,235
	2016	195,024
	2017	182,642
	2018	166,208
	2019	147,567
	Thereafter	456,763
		$	1,362,439

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The various fees paid to the former investment advisor are summarized in the table below for the years ended December 31, 2013 and 2012 (in thousands):
			Year Ended
			December 31,
			2013		2012
	Investment Management Fees		$	489	$	29,695
	Transition Services Agreement Fees		686		2,500
	Acquisition-Related Fees		1,895		5,159
	Property Management Fees (1)		1,128		1,556
	Leasing Commissions (1)		836		876
	Construction Supervision and Management Fees (1)		873		1,049
	Brokerage Fees		585		388
	Mortgage Banking Fees and Other		—		26
	Total		$	6,492	$	41,249
	__________
	-1	Such fees for each service ranged from 2.0% to 5.0% of gross revenues received from a property that we owned.

Equity_Incentive_Plan_and_Perf1

Equity Incentive Plan and Performance Bonus Plan (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Time-Based Restricted Common Shares	A summary of our Time-Based Restricted Common Shares from January 1, 2014 through December 31, 2014 is presented below:
		Nonvested
		Common Shares		Weighted-Average			Vested
				Grant Date
				Fair Value
				per Share
	Outstanding at January 1, 2014	598,925		$	10		—
	Granted	545,325		7.74			—
	Vested	(317,133	)	7.77			317,133
	Forfeited	(26,418	)	8.4			—
	Canceled (1)	—		—			(95,313	)
	Outstanding at December 31, 2014	800,699		$	8.68		221,820
	__________
	-1	47,206 and 48,107 common shares were tendered in accordance with the terms of the 2013 and 2012 equity incentive awards, respectively, to satisfy minimum state tax withholding requirements related to the restricted common shares that have vested. We accept the return of shares at the current quoted closing share price of the Company's common shares on the NYSE to satisfy tax obligations.
		2014			2013			2012
	Compensation Expense Recorded During the Years ended December 31 (1)(2)	$	6,057		$	5,713		$	445
	Unamortized Compensation Costs	$	4,616		$	4,444		$	6,167
	Shares Available for the Future Awards(3)	4,045,493			4,597,500			19,298,000
Summary of Compensation Expense and Details
		2014			2013			2012
	Compensation Expense Recorded During the Years ended December 31 (1)(2)	$	6,057		$	5,713		$	445
	Unamortized Compensation Costs	$	4,616		$	4,444		$	6,167
	Shares Available for the Future Awards(3)	4,045,493			4,597,500			19,298,000
	__________
	-1	2014 compensation expense includes severance expense totaling $2.7 million.
	-2	2013 compensation expense includes expenses incurred in the Listing Expense totaling $3.8 million.
	-3	Shares available for the future awards includes units under the 2013 equity incentive plan

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Components of Accumulated Other Comprehensive Income	The following presents the changes in the balances of each component of accumulated other comprehensive income (loss) for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Foreign Currency			Swap Fair Value			Accumulated Other
		Translation Gain (Loss)			Adjustment			Comprehensive
								Income (Loss)
	Balance at January 1, 2012	$	(10,579	)	$	(13,085	)	$	(23,664	)
	Other Comprehensive Income Before Reclassifications	4,415			10,662			15,077
	Balance at December 31, 2012	$	(6,164	)	$	(2,423	)	$	(8,587	)
	Other Comprehensive Income Before Reclassifications	7,834			1,295			9,129
	Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	—			4,054			4,054
	Balance at December 31, 2013	$	1,670		$	2,926		$	4,596
	Other Comprehensive Loss Before Reclassifications	(19,183		)	(17,851		)	(37,034		)
	Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	—			9,169			9,169
	Balance at December 31, 2014	$	(17,513	)	$	(5,756	)	$	(23,269	)

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments and Investments (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis	The following items are measured at fair value on a recurring basis and non-recurring basis at December 31, 2014 and December 31, 2013 (in thousands):
		As of December 31, 2014
		Fair Value Measurements Using:
		Quoted				Significant			Significant			Total
		Markets				Observable			Unobservable			Fair Value
		Prices				Inputs			Inputs
		(Level 1)				(Level 2)			(Level 3)
	Assets (Liabilities)
	Cash Equivalents	$	1,573			$	—		$	—		$	1,573
	Interest Rate Swaps Designated as Cash Flow Hedges - Assets	—				1,733			—			1,733
	Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	—				(7,699		)	—			(7,699		)
	Investment in CBRE Strategic Partners Asia	—				—			6,870			6,870
	Fair Value of Real Estate at Impairment(1)	—				—			94,000			94,000
	__________
	-1	Represents a non-recurring fair value measurement.
		As of December 31, 2013
		Fair Value Measurements Using:
		Quoted				Significant			Significant			Total
		Markets				Observable			Unobservable			Fair Value
		Prices				Inputs			Inputs
		(Level 1)				(Level 2)			(Level 3)
	Assets (Liabilities)
	Cash Equivalents	$	1,069			$	—		$	—		$	1,069
	Interest Rate Swaps Designated as Cash Flow Hedges - Assets	—				5,211			—			5,211
	Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	—				(2,565		)	—			(2,565		)
	Investment in CBRE Strategic Partners Asia	—				—			9,676			9,676
Investment in CBRE Strategic Partners Asia Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)	The following table presents our activity for our investment in CBRE Strategic Partners Asia measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2014 and 2013, respectively (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2014		$	9,676
	Distributions		(2,724		)
	Total Income on Fair Value Adjustment		769
	Unrealized Loss in Fair Value Adjustment		(851		)
	Balance at December 31, 2014		$	6,870
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2013		$	8,098
	Total Income on Fair Value Adjustment		1,578
	Balance at December 31, 2013		$	9,676
Summary of Notes Payable and Estimated Fair Value	For disclosure purposes only, the following table summarizes our financial instruments and their estimated fair value at December 31, 2014 and December 31, 2013 (in thousands):
			December 31, 2014							31-Dec-13
	Financial Instrument		Carrying				Fair			Carrying			Fair
			Value				Value			Value			Value
	Secured Notes Payable(1)		$	610,608			$	628,194		$	681,200		$	721,728
	Unsecured Term Loan Facilities(1)		$	570,000			$	577,196		$	570,000		$	570,272
	Unsecured Revolving Credit Facility(1)		$	200,044			$	200,044		$	170,044		$	170,044
	__________
	-1	Items are measured using Level 2 inputs.

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Minimum Commitment Under Ground Lease	The minimum commitment under the ground lease as of December 31, 2014 and thereafter is as follows (in thousands):
	2015	$	273
	2016	273
	2017	273
	2018	276
	2019	308
	Thereafter	4,474
		$	5,877

Segment_Disclosure_Tables

Segment Disclosure (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Comparison of Net Operating Income	The following table compares the net operating income for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2014			2013			2012
	Industrial Properties
	Revenues:
	Rental	$	60,241		$	54,256		$	42,362
	Tenant Reimbursements	15,866			15,848			8,861
	Other Property Income	711			—			—
	Total Revenues	76,818			70,104			51,223
	Property and Related Expenses:
	Property Operating	6,263			4,139			3,207
	Real Estate Taxes	12,756			14,004			7,621
	Total Property and Related Expenses	19,019			18,143			10,828
	Net Operating Income	$	57,799		$	51,961		$	40,395
	Office Properties
	Revenues:
	Rental	$	147,619		$	138,566		$	99,111
	Tenant Reimbursements	43,816			37,294			24,424
	Other Property Income	1,069			—			—
	Total Revenues	192,504			175,860			123,535
	Property and Related Expenses:
	Property Operating	30,341			26,868			17,983
	Real Estate Taxes	26,811			23,967			15,015
	Total Property and Related Expenses	57,152			50,835			32,998
	Net Operating Income	$	135,352		$	125,025		$	90,537
	Non-Reportable Properties
	Revenues:
	Rental	$	2,320		$	3,884		$	3,959
	Tenant Reimbursements	48			164			126
	Total Revenues	2,368			4,048			4,085
	Property and Related Expenses:
	Property Operating	153			214			274
	Total Property and Related Expenses	153			214			274
	Net Operating Income	$	2,215		$	3,834		$	3,811
Reconciliation to Consolidated Net Income (Loss)
		Year Ended December 31,
		2014			2013			2012
	Reconciliation to Consolidated Net Income
	Total Segment Net Operating Income	$	195,366		$	180,820		$	134,743
	Expenses:
	General and Administrative	31,333			23,138			14,660
	Investment Management Fee	—			489			29,695
	Acquisition-related Expenses	2,272			2,690			7,752
	Depreciation and Amortization	109,292			102,793			72,383
	Impairment of Real Estate	27,563			—			—
	Transition and Listing Expenses	—			12,681			8,249
		24,906			39,029			2,004
	Other Expenses and Income
	Interest and Other Income	652			1,321			2,235
	Interest Expense	(55,311		)	(47,295		)	(33,845		)
	Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	71			614			(118		)
	Gain on Sale of Real Estate	21,164			—			—
	Loss on Early Extinguishment of Debt	(477		)	(1,051		)	(17,284		)
	Gain on Conversion of Equity Investment to Controlling Interest	—			75,763			—
	(Loss) Income from Continuing Operations Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	(8,995		)	68,381			(47,008		)
	Provision for Income Taxes	(780		)	(287		)	(266		)
	Equity in Income of Unconsolidated Entities	28,823			12,111			3,959
	Net Income (Loss) from Continuing Operations	19,048			80,205			(43,315		)
	Discontinued Operations
	Income from Discontinued Operations	—			382			720
	Gain (Loss) on Sale of Real Estate	—			2,759			(413		)
	Income From Discontinued Operations	—			3,141			307
	Net Income (Loss)	$	19,048		$	83,346		$	(43,008	)
Condensed Assets
		Year Ended December 31,
	Condensed Assets	2014			2013			2012
	Industrial Properties	$	916,038		$	725,566		$	678,930
	Office Properties	1,504,285			1,639,875			1,115,906
	Other Properties	—			50,209			66,924
	Non-Segment Assets(1)	449,485			594,946			616,276
	Non-Segment Construction Progress and Other Assets—Variable Interest Entity	—			—			76,826
	Total Assets	$	2,869,808		$	3,010,596		$	2,554,862
Capital Expenditures
		Year Ended December 31,
	Condensed Expenditures	2014			2013			2012
	Industrial Properties	$	216,532		$	82,274		$	239,470
	Office Properties	11,197			510,081			29,582
	Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	—			—			56,180
	Total Capital Expenditures	$	227,729		$	592,355		$	325,232

Earnings_per_Share_Attributabl1

Earnings per Share Attributable to Common Shareholders (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table reconciles the numerator and denominator in computing the Company's basic and diluted per-share computations for net income attributable to common shareholders for the years ended December 31, 2014, 2013 and 2012 is as follows (in thousands except share data):
		Year Ended December 31,
		2014			2013			2012
	Numerator:
	Income (Loss) from Continuing Operations	$	19,048		$	80,205		$	(43,315	)
	(Income) Loss from Continuing Operations Attributable to Noncontrolling Interests	—			(82		)	32
	Allocation to Participating Securities (Nonvested Time-Based Shares)	(454		)	(360		)	(90		)
	Numerator for Basic and Diluted Income (Loss) from Continuing Operations	18,594			79,763			(43,373		)
	Income from Discontinued Operations	—			3,141			307
	Numerator for Basic and Diluted Net Income (Loss) Attributable to Common Shareholders	$	18,594		$	82,904		$	(43,066	)
	Denominator:
	Basic Weighted Average Vested Shares Outstanding	236,866,656			242,379,680			248,154,277
	Effect of Dilutive Securities - Performance-Based Shares(1)	—			—			—
	Diluted Weighted Average Vested Shares Outstanding	236,866,656			242,379,680			248,154,277
	Basic and Diluted Earnings Per Share:
	Income (Loss) from Continuing Operations Attributable to Common Shareholders per Share	$	0.08		$	0.33		$	(0.17	)
	Income from Discontinued Operations Attributable to Common Shareholders per Share	$	0		$	0.01		$	0
	Net Income (Loss) Attributable to Common Shareholders per Share	$	0.08		$	0.34		$	(0.17	)
	__________
	-1	375,000 performance-based shares granted in September 2012 and subsequently vested in May 2013 are not included in the diluted weighted average share calculations for the year ended December 31, 2012 because the effect would be anti-dilutive.

Distributions_Tables

Distributions (Tables)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Distributions Declared Per Common Share	The following table reconciles the distributions declared per common share to the distributions paid per common share during the years ended December 31, 2014, 2013 and 2012:
		2014				2013				2012
	Distributions declared per common share	$	0.504			$	0.551			$	0.6
	Less: Distributions declared in the current period, and paid in the subsequent period	(0.042		)		(0.042		)		(0.150		)
	Add: Distributions declared in the prior year, and paid in the current year	0.042				0.15				0.15
	Distributions paid per common share	$	0.504			$	0.659			$	0.6
Income Tax Treatment For Distributions Declared	The income tax treatment for distributions declared for the years ended December 31, 2014, 2013 and 2012 as identified above, were as follows (unaudited):
		2014							2013						2012
	Ordinary Income	$	0.32			63.5	%		$	0.2903			44.1	%	$	0.087	14.5	%
	Return of Capital	0.1195				23.7	%		0.3614				54.8	%	0.513		85.5	%
	Capital Gain	0.0644			(1)	12.8	%		0.0073				1.1	%	—		—	%
		$	0.504			100	%		$	0.659			100	%	$	0.6	100	%
	__________
	-1	38.7% of the capital gain is comprised of a recaptured Section 1250 gain.

Quarterly_Financial_Informatio1

Quarterly Financial Information (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Summary of Quarterly Financial Data	Summarized quarterly financial data for the years ended December 31, 2014 and 2013 was as follows (in thousands, except per share amounts):
		2014 Quarter Ended
		March 31		June 30			September 30		December 31
	Total Revenue	$	68,165	$	66,628		$	68,147	$	68,750
	Income from Continuing Operations	3,319		5,153			18,468		(7,892		)
	Net Income (Loss)	3,319		5,153			18,468		(7,892		)
	Net Income (Loss) Attributable to Common Shareholders	3,319		5,153			18,468		(7,892		)
	Net Income (Loss) Attributable to Common Shareholders per share-basic and diluted	$	0.01	$	0.02		$	0.08	$	(0.03	)
		2013 Quarter Ended
		March 31		June 30			September 30		December 31
	Total Revenue	$	53,432	$	66,556		$	64,786	$	65,238
	Income (Loss) from Continuing Operations	81,999		(3,730		)	745		1,191
	Income from Discontinued Operations	91		90			114		2,846
	Net Income (Loss)	82,090		(3,640		)	859		4,037
	Net Income (Loss) Attributable to Common Shareholders	82,007		(3,636		)	856		4,037
	Net Income (Loss) Attributable to Common Shareholders per share-basic and diluted	$	0.33	$	(0.01	)	$	0	$	0.02

Organization_and_Nature_of_Bus1

Organization and Nature of Business (Details) (USD $)	0 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 26, 2013	21-May-13	Dec. 31, 2013	Dec. 31, 2014	Dec. 16, 2014	Jun. 26, 2013	Dec. 31, 2012
			sqft	sqft	sqft
			Property	Property
				country
				entity
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Common shares, par value (in usd per share)			$0.01	$0.01			$0.01
Repurchase and Cancellation of Common Shares	$125,000	$125,000	$125,000
Repurchase and Cancellation of Common Shares (in shares)	12,376,237
Common Stock Purchase Price Per Share	$10.10					$10.10
Common Shares of Beneficial Interest, issued			236,463,981	236,920,675
Number of real estate properties			33	29
Net Rentable Area			330,374	431,337	121,969
Equity Method Investments, Unconsolidated Entities, Number				4
Number of Countries in Which Unconsolidated Properties Located				3
Unconsolidated Properties
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of real estate properties				26
Number Of States In Which Consolidated Properties Located				8
Net Rentable Area				12,400,000
Percentage of leased property				99.90%
Triple Net Lease, Single Tenant Properties | Unconsolidated Properties
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Rentable Area				11,500,000
Property Subject to or Available for Operating Lease, Number of Units				20
CSP OP
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest owned				100.00%
Consolidated Entities
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of real estate properties				102
Number Of States In Which Consolidated Properties Located				18
Net Rentable Area				25,300,000
Percentage of leased property				97.50%
Consolidated Entities | Triple Net Lease, Single Tenant Properties
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net Rentable Area				20,600,000
Property Subject to or Available for Operating Lease, Number of Units				77

Basis_of_Presentation_and_Summ3

Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $)	0 Months Ended	12 Months Ended			0 Months Ended
	Oct. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2013	Jan. 30, 2013
		segment
		geographic_area
Schedule of Equity Method Investments [Line Items]
Minimum lease period	12 years
Number of geographic regions		2
Number of reportable segments		2
Restricted Cash		$14,718,000	$15,236,000
Prepaid Insurance and Real Estate Taxes		3,022,000	2,699,000
Tenant Lease Inducement, Net		13,927,000	3,274,000
Acquisition Deposit		0	2,750,000
Derivative Asset		1,733,000	5,211,000
Other		2,930,000	2,823,000
Total		21,612,000	16,757,000
Irrevocable stand-by letters of credit		20,300,000	14,500,000
Allowance for uncollectible rent receivable		62,000	24,000
Uncollectible Rent Receivables Written Off		0	200,000	400,000
Transition costs			700,000
Listing expenses			12,000,000
Listing expenses attributable to share-based compensation			3,800,000
Provision for Income Taxes		780,000	287,000	266,000
Foreign Tax Authority
Schedule of Equity Method Investments [Line Items]
Income Tax, Statutory Tax Rate on Real Property Operating Results		20.00%
United Kingdom
Schedule of Equity Method Investments [Line Items]
Exchange rate		1.5576	1.6573
Profit and loss weighted average exchange rate		1.6533	1.5628	1.5865
Deferred Tax Assets, Gross		600,000
Deferred Tax Assets, Valuation Allowance		600,000
European
Schedule of Equity Method Investments [Line Items]
Exchange rate		1.2099	1.3753
Profit and loss weighted average exchange rate		1.3326	1.3248	1.2877
Building and Building Improvements
Schedule of Equity Method Investments [Line Items]
Depreciable lives		39 years 0 days
Site Improvements | Minimum
Schedule of Equity Method Investments [Line Items]
Depreciable lives		15 years
Site Improvements | Maximum
Schedule of Equity Method Investments [Line Items]
Depreciable lives		25 years
Variable Interest Entity, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Ownership percentage	95.00%
Trammel Crow Company
Schedule of Equity Method Investments [Line Items]
Ownership percentage by noncontrolling owners	5.00%				5.00%
Partially owned properties
Schedule of Equity Method Investments [Line Items]
Parent ownership interest, changes, purchase of interest by parent (percent)					$3,500,000	$3,500,000

Investment_in_Real_Estate_Acti2

Investment in Real Estate Activity (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 01, 2013	Jan. 31, 2013	Jan. 30, 2013
Business Acquisition [Line Items]
Gain on Conversion of Equity Interest to Controlling Interest	$0	$75,763,000	$0
Acquisition-Related	2,272,000	2,690,000	7,752,000
Gain (Loss) from Sale of Real Estate	-27,563,000	0	0
Real Estate Investment Property, Net	2,089,190,000	2,074,444,000
Loss from discontinued operations			-400,000
Gain (Loss) on Sale of Real Estate	0	2,759,000	-413,000
Maskew Retail Park
Business Acquisition [Line Items]
Gain (Loss) on Sale of Real Estate	13,200,000
Albion Mills Retail Park
Business Acquisition [Line Items]
Gain (Loss) on Sale of Real Estate		3,600,000
70 Hudson Street
Business Acquisition [Line Items]
Real Estate Investment Property, Net	94,000,000
Non-recourse mortgage loan	114,100,000
Thames Valley Five
Business Acquisition [Line Items]
Gain (Loss) on Sale of Real Estate	900,000
12650 Ingenuity Drive
Business Acquisition [Line Items]
Gain (Loss) on Sale of Real Estate	5,100,000
Deerfield Commons
Business Acquisition [Line Items]
Gain (Loss) on Sale of Real Estate	5,600,000
Wholly owned properties
Business Acquisition [Line Items]
Below Market Leases, Acquired, Weighted Average Amortization Period	9 years 11 months 1 day
Wholly owned properties | Acquired In-Place Leases
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years 2 months 2 days	9 years 4 months 1 day
Wholly owned properties | Above-market leases
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		7 years 6 months 22 days
Partially owned properties
Business Acquisition [Line Items]
Below Market Leases, Acquired, Weighted Average Amortization Period		7 years 10 months 0 days
Parent ownership interest, changes, purchase of interest by parent (percent)					3,500,000	3,500,000
Business Combination, Consideration Transferred				98,100,000
Including equity interest in acquiree held prior to combination				$490,700,000
Partially owned properties | 1400 Atwater
Business Acquisition [Line Items]
Parent ownership interest, changes, purchase of interest by parent, percent						5.00%
Partially owned properties | Duke Portfolio
Business Acquisition [Line Items]
Percentage of interests acquired (percent)				20.00%		20.00%
Number of properties acquired (properties)				17
Business Combination, Step Acquisition, VIE, Equity Interest in Acquired, Percent				20.00%
Partially owned properties | Duke Portfolio | Office Building
Business Acquisition [Line Items]
Number of properties acquired (properties)				16
Partially owned properties | Duke Portfolio | Warehouse
Business Acquisition [Line Items]
Number of properties acquired (properties)				1
Area of Building				3,318,402
Partially owned properties | CSP OP
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage				80.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage				100.00%
Partially owned properties | Acquired In-Place Leases
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		6 years 10 months 4 days
Partially owned properties | Above-market leases
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		7 years 9 months 21 days
Domestic Industrial Properties
Business Acquisition [Line Items]
Number of Real Estate Properties, Acquired	7
Domestic Office Properties
Business Acquisition [Line Items]
Number of Real Estate Properties, Acquired		2

Investment_in_Real_Estate_Acti3

Investment in Real Estate Activity (Wholly-Owned Property Acquisitions) (Details) (USD $)	Dec. 31, 2014	Dec. 16, 2014	Dec. 31, 2013	Jan. 02, 2014	Jul. 31, 2014	Oct. 24, 2014	Nov. 18, 2014	Jul. 31, 2013	Aug. 08, 2013
	sqft	sqft	sqft	sqft	sqft	sqft	sqft	sqft	sqft
Open Option Contracts Written [Line Items]
Purchase Price	$2,329,163,000		$2,270,222,000
Net Rentable Area	431,337	121,969	330,374
Escrow deposit			2,800,000
Long-term debt, premium	15,494,000		17,294,000
Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price	203,600,000		60,259,000
Net Rentable Area	3,284,173		383,622
445 Airtech Parkway | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price				30,200,000
Net Rentable Area				622,440
Percentage of leased property				100.00%
1 Rocket Road | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price					46,650,000
Net Rentable Area					514,753
Percentage of leased property					100.00%
1659 Sauget Business Blvd | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price						21,100,000
Net Rentable Area						502,500
Percentage of leased property						100.00%
325 Center Point Blvd | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price							45,750,000
Net Rentable Area							744,080
Percentage of leased property							100.00%
550 Oak Ridge Drive | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price							40,700,000
Net Rentable Area							615,600
Percentage of leased property							100.00%
125 Capital Road | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price							8,700,000
Net Rentable Area							144,000
Percentage of leased property							100.00%
14-46 Alberigi Drive | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price							10,500,000
Net Rentable Area							140,800
Percentage of leased property							100.00%
Carpenter Corporate Center I & II | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price								49,509,000
Net Rentable Area								226,822
Percentage of leased property								100.00%
1200 Woods Chapel Road | Wholly owned properties
Open Option Contracts Written [Line Items]
Purchase Price									10,750,000
Net Rentable Area									156,800
Percentage of leased property									100.00%
Mortgages | 1 Rocket Road
Open Option Contracts Written [Line Items]
Long-term debt assumed in acquisition					18,700,000
Long-term debt, premium					$2,600,000

Investment_in_Real_Estate_Acti4

Investment in Real Estate Activity (Allocation of Assets and Liabilities of Acquired Assets) (Details) (USD $)

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Jan. 02, 2014

Jul. 31, 2014

Oct. 24, 2014

Nov. 18, 2014

Business Acquisition [Line Items]

Notes Payable, premium

$15,494

$17,294

Wholly owned properties

Business Acquisition [Line Items]

Land

41,261

7,461

Building and Improvements

144,599

43,307

Deferred Leasing Costs

4,567

[1]

Total Acquired Assets

209,912

60,877

Acquired Below-Market Leases

3,197

[2]

618

[3]

Secured Notes Payable, Net

21,281

Other Liabilities Assumed

3,483

Total Liabilities Assumed

27,961

618

Net Assets Acquired

181,951

60,259

Below Market Leases, Acquired, Weighted Average Amortization Period

9 years 11 months 1 day

Wholly owned properties | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

15,698

[4]

9,032

[5]

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

6 years 2 months 2 days

9 years 4 months 1 day

Wholly owned properties | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

766

[6]

1,077

[5]

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

7 years 6 months 22 days

Wholly owned properties | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

1,441

[7]

Prepaid Expenses and Other Assets

510

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

9 years 10 months 30 days

Wholly owned properties | Deferred Leasing Costs

Business Acquisition [Line Items]

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

4 years 7 months 25 days

Wholly owned properties | Acquired Below- Market Leases

Business Acquisition [Line Items]

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

4 years 7 months 17 days

Below Market Leases, Acquired, Weighted Average Amortization Period

8 years 2 months 15 days

Wholly owned properties | Land Available for Expansion

Business Acquisition [Line Items]

Land

1,070

Wholly owned properties | 445 Airtech Parkway

Business Acquisition [Line Items]

Land

5,666

[8]

Building and Improvements

19,443

[8]

Deferred Leasing Costs

0

[1],[8]

Total Acquired Assets

30,200

[8]

Acquired Below-Market Leases

0

[2],[8]

Secured Notes Payable, Net

0

[8]

Other Liabilities Assumed

216

Total Liabilities Assumed

216

Net Assets Acquired

29,984

[8]

Wholly owned properties | 445 Airtech Parkway | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

2,596

[4],[8]

Wholly owned properties | 445 Airtech Parkway | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

0

[6],[8]

Wholly owned properties | 445 Airtech Parkway | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

1,425

[7],[8]

Prepaid Expenses and Other Assets

0

Wholly owned properties | 445 Airtech Parkway | Land Available for Expansion

Business Acquisition [Line Items]

Land

1,070

[8]

Wholly owned properties | 1 Rocket Road

Business Acquisition [Line Items]

Land

15,887

[9]

Building and Improvements

30,774

[9]

Deferred Leasing Costs

947

[1],[9]

Total Acquired Assets

52,329

[9]

Acquired Below-Market Leases

2,894

[2],[9]

Secured Notes Payable, Net

21,281

[9]

Other Liabilities Assumed

260

Total Liabilities Assumed

24,435

[9]

Net Assets Acquired

27,894

[9]

Wholly owned properties | 1 Rocket Road | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

4,541

[4],[9]

Wholly owned properties | 1 Rocket Road | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

0

[6],[9]

Wholly owned properties | 1 Rocket Road | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

0

[7],[9]

Prepaid Expenses and Other Assets

180

Wholly owned properties | 1 Rocket Road | Land Available for Expansion

Business Acquisition [Line Items]

Land

0

[9]

Wholly owned properties | 1659 Sauget Business Blvd

Business Acquisition [Line Items]

Land

1,515

[9]

Building and Improvements

17,524

[9]

Deferred Leasing Costs

467

[1],[9]

Total Acquired Assets

21,155

[9]

Acquired Below-Market Leases

55

[2],[9]

Secured Notes Payable, Net

0

[9]

Other Liabilities Assumed

164

Total Liabilities Assumed

219

[9]

Net Assets Acquired

20,936

[9]

Wholly owned properties | 1659 Sauget Business Blvd | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

1,311

[4],[9]

Wholly owned properties | 1659 Sauget Business Blvd | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

338

[6]

Wholly owned properties | 1659 Sauget Business Blvd | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

0

[7],[9]

Prepaid Expenses and Other Assets

0

Wholly owned properties | 1659 Sauget Business Blvd | Land Available for Expansion

Business Acquisition [Line Items]

Land

0

[9]

Wholly owned properties | 325 Center Point Blvd

Business Acquisition [Line Items]

Land

5,856

[9]

Building and Improvements

35,009

[9]

Deferred Leasing Costs

1,951

[1],[9]

Total Acquired Assets

45,750

[9]

Acquired Below-Market Leases

0

[2],[9]

Secured Notes Payable, Net

0

[9]

Other Liabilities Assumed

0

Total Liabilities Assumed

0

[9]

Net Assets Acquired

45,750

[9]

Wholly owned properties | 325 Center Point Blvd | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

2,764

[4],[9]

Wholly owned properties | 325 Center Point Blvd | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

170

[6]

Wholly owned properties | 325 Center Point Blvd | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

0

[7],[9]

Prepaid Expenses and Other Assets

0

Wholly owned properties | 325 Center Point Blvd | Land Available for Expansion

Business Acquisition [Line Items]

Land

0

[9]

Wholly owned properties | 550 Oak Ridge Drive

Business Acquisition [Line Items]

Land

8,134

[9]

Building and Improvements

28,859

[9]

Deferred Leasing Costs

755

[1],[9]

Total Acquired Assets

41,030

[9]

Acquired Below-Market Leases

0

[2],[9]

Secured Notes Payable, Net

0

[9]

Other Liabilities Assumed

2,843

Total Liabilities Assumed

2,843

[9]

Net Assets Acquired

38,187

[9]

Wholly owned properties | 550 Oak Ridge Drive | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

2,905

[4],[9]

Wholly owned properties | 550 Oak Ridge Drive | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

47

[6]

Wholly owned properties | 550 Oak Ridge Drive | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

0

[7],[9]

Prepaid Expenses and Other Assets

330

Wholly owned properties | 550 Oak Ridge Drive | Land Available for Expansion

Business Acquisition [Line Items]

Land

0

[9]

Wholly owned properties | 125 Capital Road

Business Acquisition [Line Items]

Land

1,759

[9]

Building and Improvements

6,098

[9]

Deferred Leasing Costs

150

[1],[9]

Total Acquired Assets

8,700

[9]

Acquired Below-Market Leases

0

[2],[9]

Secured Notes Payable, Net

0

[9]

Other Liabilities Assumed

0

Total Liabilities Assumed

0

[9]

Net Assets Acquired

8,700

[9]

Wholly owned properties | 125 Capital Road | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

693

[4],[9]

Wholly owned properties | 125 Capital Road | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

0

[6]

Wholly owned properties | 125 Capital Road | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

0

[7],[9]

Prepaid Expenses and Other Assets

0

Wholly owned properties | 125 Capital Road | Land Available for Expansion

Business Acquisition [Line Items]

Land

0

[9]

Wholly owned properties | 14-46 Alberigi Drive

Business Acquisition [Line Items]

Land

2,444

[9]

Building and Improvements

6,892

[9]

Deferred Leasing Costs

297

[1],[9]

Total Acquired Assets

10,748

[9]

Acquired Below-Market Leases

248

[2],[9]

Secured Notes Payable, Net

0

[9]

Other Liabilities Assumed

0

Total Liabilities Assumed

248

[9]

Net Assets Acquired

10,500

[9]

Wholly owned properties | 14-46 Alberigi Drive | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

888

[4],[9]

Wholly owned properties | 14-46 Alberigi Drive | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

211

[6]

Wholly owned properties | 14-46 Alberigi Drive | Other Intangible Assets

Business Acquisition [Line Items]

Other Intangible Assets

16

[7],[9]

Prepaid Expenses and Other Assets

0

Wholly owned properties | 14-46 Alberigi Drive | Land Available for Expansion

Business Acquisition [Line Items]

Land

0

[9]

Wholly owned properties | Carpenter Center

Business Acquisition [Line Items]

Land

5,901

Building and Improvements

35,950

Total Acquired Assets

50,127

Acquired Below-Market Leases

618

[3]

Total Liabilities Assumed

618

Net Assets Acquired

49,509

Wholly owned properties | Carpenter Center | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

7,795

[5]

Wholly owned properties | Carpenter Center | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

481

[5]

Wholly owned properties | 1200 Woods Chapel Road

Business Acquisition [Line Items]

Land

1,560

Building and Improvements

7,357

Total Acquired Assets

10,750

Acquired Below-Market Leases

0

[3]

Total Liabilities Assumed

0

Net Assets Acquired

10,750

Wholly owned properties | 1200 Woods Chapel Road | Acquired In-Place Leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

1,237

[5]

Wholly owned properties | 1200 Woods Chapel Road | Above-market leases

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

596

[5]

Partially owned properties

Business Acquisition [Line Items]

Notes Payable, premium

13,500

Below Market Leases, Acquired, Weighted Average Amortization Period

7 years 10 months 0 days

Partially owned properties | Duke Portfolio

Business Acquisition [Line Items]

Land

60,310

Building and Improvements

364,174

Total Acquired Assets

509,756

Acquired Below-Market Leases

5,549

[10]

Secured Notes Payable, Net

229,539

[11]

Total Liabilities Assumed

235,088

Net Assets Acquired

274,668

Partially owned properties | Acquired In-Place Leases

Business Acquisition [Line Items]

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

6 years 10 months 4 days

Partially owned properties | Acquired In-Place Leases | Duke Portfolio

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

64,217

[12]

Partially owned properties | Above-market leases

Business Acquisition [Line Items]

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

7 years 9 months 21 days

Partially owned properties | Above-market leases | Duke Portfolio

Business Acquisition [Line Items]

Finite-lived Intangible Assets Acquired

$21,055

[12]

[1]

Represents deferred leasing costs with weighted average amortization period of 4.65 years.

[2]

Represents acquired below-market leases with a weighted average amortization period of 8.21 years.

[3]

Represents below-market leases with a weighted average amortization period of 9.92 years.

[4]

Represents acquired in-place leases with a weighted average amortization period of 6.17 years.

[5]

Represents in-place leases with a weighted average amortization period of 9.34 yearsB and above-market leases with a weighted average amortization period of 7.56 years.

[6]

Represents acquired below-market leases with a weighted average amortization period of 4.63 years.

[7]

Represents other intangible assets with a weighted average amortization period of 9.92 years.

[8]

Represents final allocation of the fair value of amounts recognized for each major class of assets and liabilities.

[9]

Represents preliminary allocation of the fair value of amounts recognized for each major class of assets and liabilities.

[10]

Represents below-market leases with a weighted average amortization period of 7.83 years.

[11]

Secured notes payable is presented net of a premium of $13.5 million.

[12]

Represents in-place leases with a weighted average amortization period of 6.84 yearsB and above-market leases with a weighted average amortization period of 7.81 years.

Investment_in_Real_Estate_Acti5

Investment in Real Estate Activity (Pro Forma Operations) (Details) (USD $)	12 Months Ended					10 Months Ended		5 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2014		Dec. 16, 2014
	sqft		sqft					sqft		sqft		sqft
Business Acquisition [Line Items]
Revenues	$284,494		$268,591
Net Income	24,637		86,291
Real Estate Investment Property, at Cost	2,329,163		2,270,222			2,270,222		2,270,222		2,329,163
Net Rentable Area	431,337		330,374			330,374		330,374		431,337		121,969
Net Operating Income	205,651		195,907
Basic and Diluted Income per Share	$0.10		$0.35
Weighted Average Common Shares Outstanding-Basic and Diluted	236,866,656		242,379,680		248,154,277
2012 Acquisitions Pro Forma
Business Acquisition [Line Items]
Revenues			284,242		246,276
Net Income			19,621		30,970
Net Operating Income			207,585		178,704
Basic and Diluted Income per Share			$0.08		0.12
Business Acquisitions Pro Forma Weighted Average Common Outstanding Shares Basic And Diluted			242,379,680		248,154,277
Partially owned properties
Business Acquisition [Line Items]
Revenues						50,142
Net Income						1,612
Wholly owned properties
Business Acquisition [Line Items]
Revenues								2,184		5,709
Net Income								726		99
Real Estate Investment Property, at Cost	203,600		60,259			60,259		60,259		203,600
Land	41,261		7,461			7,461		7,461		41,261
Net Rentable Area	3,284,173		383,622			383,622		383,622		3,284,173
Building and Improvements	144,599		43,307			43,307		43,307		144,599
Total Acquired Assets	209,912		60,877			60,877		60,877		209,912
Acquired Below-Market Leases	3,197	[1]	618	[2]		618	[2]	618	[2]	3,197	[1]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$181,951		$60,259			$60,259		$60,259		$181,951
[1]	Represents acquired below-market leases with a weighted average amortization period of 8.21 years.
[2]	Represents below-market leases with a weighted average amortization period of 9.92 years.

Investments_in_Real_Estate_Act

Investments in Real Estate Activity (Discontinued Operations) (Details) (USD $)	3 Months Ended				12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 16, 2014	Dec. 08, 2014	Dec. 05, 2014	Jan. 16, 2014	Nov. 18, 2014	Jul. 23, 2014	Nov. 24, 2014	Nov. 29, 2013	Dec. 20, 2013	Jul. 09, 2012
	sqft				sqft	sqft		sqft				sqft	sqft	sqft	sqft	sqft	sqft
Real Estate Properties [Line Items]
Gross Sales Price	$31,053				$127,659	$31,053			$25,900	$32,800	$13,100
Net Rentable Area	330,374				431,337	330,374		121,969
REVENUES
Rental						1,755	2,311
Tenant Reimbursements						275	372
Total Revenues						2,030	2,683
EXPENSES
Property Operating						248	338
Real Estate Taxes						197	133
Depreciation and Amortization						607	1,270
Total Expenses						1,052	1,741
Interest and Other (Expense) Income						-80	283
Interest Expense						-420	-505
Loss on Early Extinguishment of Debt						-96	0
Total Other Expenses						-596	-222
Income from Discontinued Operations						382	720
Gain (Loss) from Sale of Real Estate						2,759	-413
Income From Discontinued Operations	2,846	114	90	91	0	3,141	307
12650 Ingenuity Drive
Real Estate Properties [Line Items]
Gross Sales Price												26,500
Net Rentable Area												124,500
Maskew Retail Park
Real Estate Properties [Line Items]
Gross Sales Price													62,978
Net Rentable Area													144,400
Thames Valley Five
Real Estate Properties [Line Items]
Gross Sales Price														18,781
Net Rentable Area														40,468
Deerfield Commons
Real Estate Properties [Line Items]
Gross Sales Price								19,400
Albion Mills Retail Park
Real Estate Properties [Line Items]
Gross Sales Price															17,253
Net Rentable Area															55,294
Summit Distribution Center
Real Estate Properties [Line Items]
Gross Sales Price																13,800
Net Rentable Area																275,080
Cherokee Corporate Park
Real Estate Properties [Line Items]
Gross Sales Price																	$3,125	[1]
Net Rentable Area																	60,000	[1]
[1]	The Company recognized a loss from discontinued operatixons of $0.4 million in 2012 associated with a write-down of the property to its net sales value.

Investments_in_Unconsolidated_2

Investments in Unconsolidated Entities - Investments (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Oct. 09, 2013	Jul. 02, 2013	Jun. 10, 2010	Sep. 18, 2008
In Thousands, unless otherwise specified	Property		Property
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	29		33
Equity method investments	$423,693		$514,802		$515,829
Duke JV
Schedule of Equity Method Investments [Line Items]
Interest owned	80.00%					80.00%	80.00%
Number of real estate properties	14		18
Equity method investments	239,376		292,548
European JV
Schedule of Equity Method Investments [Line Items]
Interest owned	80.00%							80.00%
Number of real estate properties	9		9
Equity method investments	144,141		174,272
UK JV
Schedule of Equity Method Investments [Line Items]
Interest owned	80.00%
Number of real estate properties	3		3
Equity method investments	33,189		36,794
CBRE Strategic Partners Asia
Schedule of Equity Method Investments [Line Items]
Interest owned	5.07%
Number of real estate properties	3		3
Equity method investments	6,870		9,676
Afton Ridge
Schedule of Equity Method Investments [Line Items]
Interest owned									90.00%
Equity method investments	$117	[1]	$1,512	[1]
[1]	Amount at December 31, 2013 represents cash and an escrow holdback at the joint venture. The Afton Ridge Shopping Center was sold during December 2013.

Investments_in_Unconsolidated_3

Investments in Unconsolidated Entities - Investments Roll Forward (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Investment Balance, January 1,	$514,802	$515,829
Contributions	7,625	210,745
Equity in Income of Unconsolidated Entities	28,823	12,111	3,959
Other Comprehensive Income of Unconsolidated Entities	-22,342	7,293
Conversion of Duke JV Equity Investment to Controlling Interest	0	-139,558
Distributions	-105,215	-91,618
Investment Balance, December 31,	$423,693	$514,802	$515,829

Investments_in_Unconsolidated_4

Investments in Unconsolidated Entities - Narrative (Details)

0 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

Dec. 08, 2014

Dec. 05, 2014

Aug. 15, 2014

Jan. 16, 2014

Dec. 17, 2013

Dec. 11, 2013

Nov. 07, 2013

Jun. 10, 2010

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 08, 2014

Dec. 05, 2014

Jan. 16, 2014

Mar. 01, 2013

Dec. 11, 2013

Jul. 02, 2013

Sep. 18, 2008

Dec. 31, 2014

Dec. 31, 2014

Jun. 10, 2010

Mar. 31, 2013

Dec. 31, 2014

Nov. 07, 2013

Mar. 31, 2013

Dec. 31, 2014

Oct. 11, 2013

Oct. 09, 2013

Jul. 03, 2013

Jul. 02, 2013

Aug. 15, 2014

Nov. 08, 2013

Nov. 26, 2013

Dec. 17, 2013

Nov. 26, 2013

Jun. 10, 2010

Jun. 10, 2010

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

joint_venture

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Duke Portfolio

Afton Ridge

Afton Ridge

Afton Ridge

UK JV

European JV

European JV

CBRE Strategic Partners Asia

CBRE Strategic Partners Asia

Duke JV

Duke JV

Duke JV

Duke JV

Duke JV

Duke JV

Duke JV

CBRE Strategic Partners Asia

Duke JV

European JV

European JV

European JV

European JV

UK JV

USD ($)

USD ($)

Property

USD ($)

USD ($)

Property

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

GBP (£)

Property

mortgage

mortgage

Property

Open Option Contracts Written [Line Items]

Gross Sales Price of Investment Real Estate

$127,659,000

$31,053,000

$25,900,000

$32,800,000

$13,100,000

Sales of Real Estate

20,700,000

26,200,000

1,900,000

10,500,000

40,000,000

11,000,000

46,300,000

74,600,000

39,200,000

Gains (Losses) on Sales of Investment Real Estate

21,164,000

0

0

500,000

Number of joint ventures acquired

2

Interest owned

20.00%

90.00%

80.00%

80.00%

80.00%

5.07%

80.00%

80.00%

80.00%

Number Of Mortgage Notes Payable

2

5

Number Of Properties To Collateralized Mortgage Notes Payable

5

Principal Payments On Mortgage Notes Payable

50,800,000

99,200,000

Number of Businesses Acquired

17

Mortgage Notes Payable

40,700,000

79,800,000

Interested owned by other party

10.00%

20.00%

Repayment Of Mortgage Debt

25,500,000

Portion Of Proceeds Used To Repay Mortgage Loan

2,600,000

Business Acquisition, Maximum Allowable Assets Acquired

400,000,000

400,000,000

Business Combination, Consideration Transferred

62,000,000

Notes Payable

610,608,000

681,200,000

28,300,000

25,400,000

Capital Commitment

20,000,000

Stock Issued During Period, Value, New Issues

33,580,000

236,679,000

17,500,000

Brokerage Fees Paid to Affiliate of Former Investment Advisor

97,000

111,000

144,000

Acquisition Fees

49,000

Number Of Properties Sold

5

2

Payments to Acquire Real Estate

€ 70,500,000

$179,201,000

$115,377,000

$266,491,000

Investments_in_Unconsolidated_5

Investments in Unconsolidated Entities - Consolidated Balance Sheet (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Assets
Assets	$894,416,000		$1,098,715,000
Liabilities and Equity
Liabilities	234,763,000		273,851,000
CSP Equity	423,693,000		514,801,000
Other Investors' Equity	235,960,000		310,063,000
Total Liabilities and Equity	894,416,000		1,098,715,000
Investments in Real Estate
Assets
Assets	783,724,000	[1],[2],[3]	955,899,000	[1],[2],[3]
Real Estate Investments and Other Assets Held-for-Sale
Assets
Assets	17,230,000		0
Other Assets
Assets
Assets	93,462,000	[1]	142,816,000	[1]
Liabilities Related to Real Estate Investments Held-for-Sale
Liabilities and Equity
Liabilities	11,048,000		0
Secured Notes Payable, Net
Liabilities and Equity
Liabilities	192,064,000		233,412,000
Other Liabilities
Liabilities and Equity
Liabilities	31,651,000	[3]	40,439,000	[3]
Duke JV
Assets
Assets	372,940,000		455,903,000
Liabilities and Equity
Liabilities	74,283,000		90,816,000
CSP Equity	239,376,000		292,548,000
Other Investors' Equity	59,281,000		72,539,000
Total Liabilities and Equity	372,940,000		455,903,000
Duke JV | Investments in Real Estate
Assets
Assets	323,236,000	[2]	403,818,000	[2]
Duke JV | Real Estate Investments and Other Assets Held-for-Sale
Assets
Assets	17,230,000		0
Duke JV | Other Assets
Assets
Assets	32,474,000		52,085,000
Duke JV | Liabilities Related to Real Estate Investments Held-for-Sale
Liabilities and Equity
Liabilities	11,048,000		0
Duke JV | Secured Notes Payable, Net
Liabilities and Equity
Liabilities	56,891,000		79,761,000
Duke JV | Other Liabilities
Liabilities and Equity
Liabilities	6,344,000		11,055,000
European JV
Assets
Assets	323,563,000		382,918,000
Liabilities and Equity
Liabilities	143,387,000		165,078,000
CSP Equity	144,141,000		174,272,000
Other Investors' Equity	36,035,000		43,568,000
Total Liabilities and Equity	323,563,000		382,918,000
European JV | Investments in Real Estate
Assets
Assets	274,128,000		311,205,000
European JV | Other Assets
Assets
Assets	49,435,000		71,713,000
European JV | Secured Notes Payable, Net
Liabilities and Equity
Liabilities	135,173,000		153,651,000
European JV | Other Liabilities
Liabilities and Equity
Liabilities	8,214,000		11,427,000
Goodman Europe
Liabilities and Equity
Reclassifications to other intangible liabilities	2,500,000		3,400,000
Reclassifications to other assets	27,100,000		35,900,000
Goodman UK
Liabilities and Equity
Reclassifications to other intangible liabilities	500,000		800,000
Reclassifications to other assets	$2,100,000		$3,300,000
[1]	Effective 2013, the Deferred Leasing Assets, which was formerly included in Investment in Real Estate has been reclassified into Other Assets. For the European JV, amount reclassified was $35.9 million in 2013 and $27.1 million in 2014. For the UK JV, amount reclassified was $3.3 million in 2013 and $2.1 million in 2014.
[2]	Includes REIT Basis Adjustments for costs incurred by the Company outside of the Duke JV that are directly capitalizable to its investment in real estate assets acquired, including acquisition costs paid to our former investment advisor prior to January 1, 2009.
[3]	Effective 2013, the intangible liabilities, which was formerly included in Investment in Real Estate has been reclassified into Other Liabilities. Amount reclassified for the European JV was $3.4 million in 2013 and $2.5 million in 2014. Amount reclassified for the UK JV was $0.8 million in 2013 and $0.5 million in 2014.

Investments_in_Unconsolidated_6

Investments in Unconsolidated Entities - Consolidated Statements of Operations (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Total Revenue	$89,670	$131,166	$153,131
Operating Expenses	24,069	29,917	50,204
Net Operating Income	65,601	101,249	102,927
Acquisition and Related Expense	0	4,778	686
Depreciation and Amortization	40,538	41,457	68,714
Interest Expense	8,600	13,673	26,516
Gain (Loss) from Sales of Real Estate	17,033	3,628	0
Loss on Extinguishment of Debt	-1,723	0	0
Income from Continuing Operations	31,773	44,969	7,011
Gain (Loss) from Discontinued Operations	18	-841	0
Net Income	31,791	44,128	7,011
CSP Equity in Net Income	28,962	12,228	4,088
Adjustments for REIT basis	-139	-117	-129
CSP Equity in Net Income	28,823	12,111	3,959
Duke JV
Business Acquisition [Line Items]
Total Revenue	57,877	67,500	125,333
Operating Expenses	17,572	20,698	42,102
Net Operating Income	40,305	46,802	83,231
Depreciation and Amortization	26,352	30,568	59,663
Interest Expense	4,098	10,500	24,551
Gain (Loss) from Sales of Real Estate	17,033	0	0
Loss on Extinguishment of Debt	-1,723	0	0
Income from Continuing Operations	25,165	5,734	-983
Gain (Loss) from Discontinued Operations	18	-841	0
Net Income	25,183	4,893	-983
CSP Equity in Net Income	20,008	4,362	-896
Adjustments for REIT basis	-139	448	-110
CSP Equity in Net Income	20,147	3,914	-786
European JV
Business Acquisition [Line Items]
Total Revenue	29,322	19,581	11,947
Operating Expenses	3,510	3,631	1,824
Net Operating Income	25,812	15,950	10,123
Acquisition and Related Expense	0	4,778	39
Depreciation and Amortization	12,100	7,636	5,388
Interest Expense	4,502	2,400	462
Net Income	9,210	1,136	4,234
CSP Equity in Net Income	$7,367	$909	$3,387

Deferred_Leasing_Costs_and_Int2

Deferred Leasing Costs and Intangible Assets and Liabilities - Summary of Deferred Leasing Costs and Intangible Assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Intangible Assets, net:
Total	$220,490	$248,872
Intangible Liabilities, Net:
Below-Market Leases	51,653	49,751
Accumulated Amortization	-26,675	-23,022
Below-Market Leases, Net	24,978	26,729
Above-Market Ground Lease Obligation	1,501	1,501
Accumulated Amortization	-231	-160
Above-Market Ground Lease Obligation, Net	1,270	1,341
Total Intangible Liabilities, Net	26,248	28,070
Deferred Leasing Costs
Intangible Assets, net:
Finite-Lived Intangible Assets, Gross	22,481	11,243
Finite-Lived Intangible Assets, Accumulated Amortization	-4,218	-3,016
Total	18,263	8,227
Above-market leases
Intangible Assets, net:
Finite-Lived Intangible Assets, Gross	63,566	77,180
Finite-Lived Intangible Assets, Accumulated Amortization	-30,311	-33,577
Total	33,255	43,603
Acquired In-Place Leases
Intangible Assets, net:
Finite-Lived Intangible Assets, Gross	300,124	321,776
Finite-Lived Intangible Assets, Accumulated Amortization	-132,414	-124,734
Total	167,710	197,042
Other Intangible Assets
Intangible Assets, net:
Finite-Lived Intangible Assets, Gross	1,425	0
Finite-Lived Intangible Assets, Accumulated Amortization	-163	0
Total	$1,262	$0

Deferred_Leasing_Costs_and_Int3

Deferred Leasing Costs and Intangible Assets and Liabilities - Summary of Amortization of Intangible Assets and Liabilities (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Deferred Leasing Costs
Intangible Assets Goodwill And Other Assets [Line Items]
Amortization leases	$1,731	[1]	$1,314	[1]	$714	[1]
Above-market leases
Intangible Assets Goodwill And Other Assets [Line Items]
Amortization leases	9,498	[2]	10,374	[2]	7,658	[2]
In-Place Leases
Intangible Assets Goodwill And Other Assets [Line Items]
Amortization leases	37,222	[1]	36,653	[1]	28,826	[1]
Other Intangible Assets
Intangible Assets Goodwill And Other Assets [Line Items]
Amortization leases	163	[1]	0	[1]	0	[1]
Below-Market Leases
Intangible Assets Goodwill And Other Assets [Line Items]
Amortization leases	-4,206	[2]	-3,972	[2]	-5,173	[2]
Above- Market Ground Lease Obligations
Intangible Assets Goodwill And Other Assets [Line Items]
Amortization leases	($71)	[3]	($71)	[3]	($71)	[3]
[1]	The amortization of deferred leasing costs, in-place leases, and other intangible assets are recorded to depreciation and amortization expense in the condensed consolidated statements of operations for the periods presented.
[2]	The amortization of above-market leases and below-market leases are recorded as reductions and additions to rental income, respectively, in the condensed consolidated statements of operations for the periods presented.
[3]	The amortization of the above-market ground lease obligation is recorded as a decrease to property operating expense in the condensed consolidated statements of operations for the periods presented.

Deferred_Leasing_Costs_and_Int4

Deferred Leasing Costs and Intangible Assets and Liabilities - Schedule of Future Amortization of Acquisition Related Intangible Assets and Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Acquired Indefinite-lived Intangible Assets [Line Items]
Total	$220,490	$248,872
Deferred Leasing Costs
Acquired Indefinite-lived Intangible Assets [Line Items]
2015	1,794
2016	1,644
2017	1,497
2018	1,446
2019	1,299
Thereafter	10,583
Total	18,263	8,227
Acquired Above- Market Leases
Acquired Indefinite-lived Intangible Assets [Line Items]
2015	8,464
2016	5,557
2017	4,466
2018	3,862
2019	3,300
Thereafter	7,606
Total	33,255
Acquired In-Place Leases
Acquired Indefinite-lived Intangible Assets [Line Items]
2015	36,606
2016	29,727
2017	25,254
2018	21,050
2019	17,284
Thereafter	37,789
Total	167,710	197,042
Other Intangible Assets
Acquired Indefinite-lived Intangible Assets [Line Items]
2015	144
2016	144
2017	144
2018	144
2019	144
Thereafter	542
Total	1,262	0
Acquired Below- Market Leases
Acquired Indefinite-lived Intangible Assets [Line Items]
2015	4,558
2016	3,590
2017	3,098
2018	2,825
2019	2,604
Thereafter	8,303
Total	24,978
Above- Market Ground Lease Obligations
Acquired Indefinite-lived Intangible Assets [Line Items]
2015	71
2016	71
2017	71
2018	71
2019	71
Thereafter	915
Total	$1,270

Debt_Notes_Payable_Secured_by_

Debt - Notes Payable Secured by Real Property (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Debt Instrument [Line Items]
Notes Payable	$610,608		$681,200
Secured notes payable	596,008		665,292
Notes Payable, premium	15,494		17,294
Less Discount	-894		-1,386
Total Secured Notes Payable, Net	610,608		681,200
One WaySide Road
Debt Instrument [Line Items]
Stated interest rate	5.66%	[1]
Effective interest rate (percent)	5.25%	[1],[2]
Maturity Date	1-Aug-15	[1]
Notes Payable	12,938	[1]	13,352	[1]
One Wayside Road
Debt Instrument [Line Items]
Stated interest rate	5.92%	[1]
Effective interest rate (percent)	5.25%	[1],[2]
Maturity Date	1-Aug-15	[1]
Notes Payable	10,854	[1]	11,169	[1]
Union Cross Bldg. II
Debt Instrument [Line Items]
Stated interest rate	6.03%
Effective interest rate (percent)	6.03%	[2]
Maturity Date	1-Sep-15
Notes Payable	8,617		8,743
Celebration Office Center
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	8,817	[3]	8,998	[3]
22535 Colonial Pkwy
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	7,889	[3]	8,051	[3]
Northpoint III
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	10,209	[3]	10,419	[3]
Goodyear Crossing Ind. Park II
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	19,489	[3]	19,891	[3]
3900 North Paramount Parkway
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	7,656	[3]	7,815	[3]
3900 South Paramount Parkway
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	7,656	[3]	7,815	[3]
1400 Perimeter Park Drive
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	2,320	[3]	2,368	[3]
Miramar I
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	9,095	[3]	9,283	[3]
Miramar II
Debt Instrument [Line Items]
Stated interest rate	4.25%	[3]
Effective interest rate (percent)	2.50%	[2],[3]
Maturity Date	1-Dec-15	[3]
Notes Payable	12,250	[3]	12,503	[3]
70 Hudson Street
Debt Instrument [Line Items]
Stated interest rate	5.65%
Effective interest rate (percent)	5.15%
Maturity Date	11-Apr-16
Notes Payable	114,108		116,100
Point West I
Debt Instrument [Line Items]
Stated interest rate	3.41%
Effective interest rate (percent)	3.41%	[2]
Maturity Date	6-Dec-16
Notes Payable	10,716		11,041
100 Tice Blvd.
Debt Instrument [Line Items]
Stated interest rate	5.97%
Effective interest rate (percent)	4.38%	[2]
Maturity Date	15-Sep-17
Notes Payable	18,960		19,544
100 Tice Blvd
Debt Instrument [Line Items]
Stated interest rate	5.97%
Effective interest rate (percent)	4.38%	[2]
Maturity Date	15-Sep-17
Notes Payable	18,960		19,543
4701 Gold Spike Drive
Debt Instrument [Line Items]
Stated interest rate	4.45%	[4]
Effective interest rate (percent)	4.45%	[2],[4]
Maturity Date	1-Mar-18	[4]
Notes Payable	9,958	[4]	10,154	[4]
1985 International Way
Debt Instrument [Line Items]
Stated interest rate	4.45%	[1],[4]
Effective interest rate (percent)	4.45%	[2],[4]
Maturity Date	1-Mar-18	[1],[4]
Notes Payable	6,920	[1],[4]	7,055	[1],[4]
3660 Deerpark Boulevard
Debt Instrument [Line Items]
Stated interest rate	4.45%	[1],[4]
Effective interest rate (percent)	4.45%	[2],[4]
Maturity Date	1-Mar-18	[1],[4]
Notes Payable	7,153	[1],[4]	7,294	[1],[4]
Tolleson Commerce Park II
Debt Instrument [Line Items]
Stated interest rate	4.45%	[1],[4]
Effective interest rate (percent)	4.45%	[2],[4]
Maturity Date	1-Mar-18	[1],[4]
Notes Payable	4,301	[1],[4]	4,386	[1],[4]
20000 S. Diamond Lake Road
Debt Instrument [Line Items]
Stated interest rate	4.45%	[1],[4]
Effective interest rate (percent)	4.45%	[2],[4]
Maturity Date	1-Mar-18	[1],[4]
Notes Payable	6,265	[1],[4]	6,388	[1],[4]
Atrium I
Debt Instrument [Line Items]
Stated interest rate	3.78%
Effective interest rate (percent)	3.78%	[2]
Maturity Date	31-May-18
Notes Payable	21,580		22,516
McAuley Place
Debt Instrument [Line Items]
Stated interest rate	3.98%
Effective interest rate (percent)	3.50%	[2]
Maturity Date	1-Sep-18
Notes Payable	12,865		13,230
Easton III
Debt Instrument [Line Items]
Stated interest rate	3.95%
Effective interest rate (percent)	3.95%	[2]
Maturity Date	31-Jan-19
Notes Payable	6,280		6,466
90 Hudson Street
Debt Instrument [Line Items]
Stated interest rate	5.66%
Effective interest rate (percent)	5.26%	[2]
Maturity Date	1-May-19
Notes Payable	103,301		104,928
Fairforest Bldg. 6
Debt Instrument [Line Items]
Stated interest rate	5.42%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Jun-19
Notes Payable	1,751		2,086
North Rhett I
Debt Instrument [Line Items]
Stated interest rate	5.65%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Aug-19
Notes Payable	1,958		2,405
1 Rocket Road
Debt Instrument [Line Items]
Stated interest rate	6.60%
Effective interest rate (percent)	4.50%	[2]
Maturity Date	1-Aug-20
Notes Payable	18,516		0
Kings Mt. II
Debt Instrument [Line Items]
Stated interest rate	5.47%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Jan-20
Notes Payable	3,467		4,043
North Rhett II
Debt Instrument [Line Items]
Stated interest rate	5.20%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Oct-20
Notes Payable	1,425		1,628
Mount Holly Bldg.
Debt Instrument [Line Items]
Stated interest rate	5.20%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Oct-20
Notes Payable	1,425		1,628
Orangeburg Park Bldg.
Debt Instrument [Line Items]
Stated interest rate	5.20%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Oct-20
Notes Payable	1,449		1,656
Kings Mtn 1
Debt Instrument [Line Items]
Stated interest rate	5.27%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Oct-20
Notes Payable	1,235		1,411
Ten Parkway North
Debt Instrument [Line Items]
Stated interest rate	4.75%
Effective interest rate (percent)	4.75%	[2]
Maturity Date	1-Jan-21
Notes Payable	11,469		11,777
Union Cross Bldg. II
Debt Instrument [Line Items]
Stated interest rate	5.53%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Jun-21
Notes Payable	5,755		6,471
Union Cross Bldg. I
Debt Instrument [Line Items]
Stated interest rate	5.50%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Jul-21
Notes Payable	1,892		2,124
Norman Pointe I
Debt Instrument [Line Items]
Stated interest rate	5.24%
Effective interest rate (percent)	3.50%	[2]
Maturity Date	1-Oct-21
Notes Payable	20,177		20,512
Norman Pointe II
Debt Instrument [Line Items]
Stated interest rate	5.24%
Effective interest rate (percent)	3.50%	[2]
Maturity Date	1-Oct-21
Notes Payable	22,214		22,583
Landings I
Debt Instrument [Line Items]
Stated interest rate	5.24%
Effective interest rate (percent)	3.50%	[2]
Maturity Date	1-Oct-21
Notes Payable	15,185		15,437
Landings II
Debt Instrument [Line Items]
Stated interest rate	5.24%
Effective interest rate (percent)	3.50%	[2]
Maturity Date	1-Oct-21
Notes Payable	13,393		13,616
Fairforest Bldg. 5
Debt Instrument [Line Items]
Stated interest rate	6.33%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Feb-24
Notes Payable	7,678		8,277
North Rhett IV
Debt Instrument [Line Items]
Stated interest rate	5.80%
Effective interest rate (percent)	6.50%	[2]
Maturity Date	1-Feb-25
Notes Payable	7,862		8,414
Avion III & IV
Debt Instrument [Line Items]
Stated interest rate	5.52%	[5]
Effective interest rate (percent)	7.00%	[2],[5]
Maturity Date	1-Apr-14	[5]
Notes Payable	0	[5]	19,979	[5]
Maskew Retail Park
Debt Instrument [Line Items]
Stated interest rate	5.68%	[6]
Effective interest rate (percent)	5.68%	[2],[6]
Maturity Date	10-Aug-14	[6]
Notes Payable	0	[6]	23,161	[6]
12650 Ingenuity Drive
Debt Instrument [Line Items]
Stated interest rate	5.62%	[7]
Effective interest rate (percent)	7.50%	[2],[7]
Maturity Date	1-Oct-14	[7]
Notes Payable	0	[7]	11,842	[7]
Bolingbrook Point III
Debt Instrument [Line Items]
Stated interest rate	5.26%	[8]
Effective interest rate (percent)	5.26%	[2],[8]
Maturity Date	1-Jan-15	[8]
Notes Payable	0	[8]	7,900	[8]
Deerfield Commons I
Debt Instrument [Line Items]
Stated interest rate	5.23%	[9]
Effective interest rate (percent)	5.23%	[2],[9]
Maturity Date	1-Dec-15	[9]
Notes Payable	$0	[9]	$9,290	[9]
[1]	This loan was paid off in full on February 2, 2015 prior to the maturity date.
[2]	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the amortization of any discounts/premiums, excluding debt issuance costs.
[3]	These nine loans are cross-collateralized.
[4]	These five loans are cross-collateralized.
[5]	This loan was paid off in full on January 2, 2014 prior to the maturity date.
[6]	This loan was paid off in full on July 23, 2014 prior to the maturity date.
[7]	This loan was paid off in full on July 1, 2014 prior to the maturity date.
[8]	This loan was paid off in full on November 6, 2014 prior to the maturity date.
[9]	This loan was paid off in full on December 16, 2014 prior to the maturity date.

Debt_Notes_Payable_Secured_by_1

Debt - Notes Payable Secured by Real Property (Footnotes) (Details)	Dec. 31, 2014
	SecurityLoan
Loan Group Maturity Date December First, Two Thousand Fifteen [Member]
Debt Instrument [Line Items]
Number of loan cross-collateralized by properties (properties)	9
Loan Group Maturity Date March First, Two Thousand Eighteen [Member]
Debt Instrument [Line Items]
Number of loan cross-collateralized by properties (properties)	5

Debt_Notes_Payable_Unsecured_T

Debt - Notes Payable - Unsecured Term Loan Facilities (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Debt Instrument [Line Items]
Outstanding Borrowings	$570,000		$570,000
Basis spread on variable rate	1.30%
WF Term Loan 2 (2)
Debt Instrument [Line Items]
Effective interest rate	2.49%	[1],[2]
Outstanding Borrowings	200,000	[2]	200,000	[2]
Basis spread on variable rate	1.50%
Long Term Debt, LIBOR Rate	0.16%		0.17%
WF Term Loan 3 (2)
Debt Instrument [Line Items]
Effective interest rate	3.12%	[1],[2]
Outstanding Borrowings	200,000	[2]	200,000	[2]
Basis spread on variable rate	1.50%
Long Term Debt, LIBOR Rate	0.16%		0.17%
TD Term Loan (3)
Debt Instrument [Line Items]
Effective interest rate	3.28%	[1],[3]
Outstanding Borrowings	50,000	[3]	50,000	[3]
Basis spread on variable rate	1.75%
Capital One Term Loan (2)
Debt Instrument [Line Items]
Effective interest rate	4.32%	[1],[2]
Outstanding Borrowings	$120,000	[2]	$120,000	[2]
Basis spread on variable rate	1.75%
[1]	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the effect of the interest rate swaps, excluding debt issuanceB costs.
[2]	As of DecemberB 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.156% and 0.165%, respectively, for these loans.
[3]	As of DecemberB 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.155% and 0.16875%, respectively, for this loan.

Debt_Notes_Payable_Unsecured_C

Debt - Notes Payable - Unsecured Credit Facility (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.30%
Outstanding Borrowings	$570,000		$570,000
Unused fee-annual rate	0.30%	[1]	0.30%	[1]
WF Term Loan 2 (2)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Effective interest rate	2.49%	[2],[3]
Outstanding Borrowings	200,000	[3]	200,000	[3]
WF Term Loan 3 (2)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.50%
Effective interest rate	3.12%	[2],[3]
Outstanding Borrowings	200,000	[3]	200,000	[3]
TD Term Loan (3)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
Effective interest rate	3.28%	[2],[4]
Outstanding Borrowings	50,000	[4]	50,000	[4]
Capital One Term Loan (2)
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%
Effective interest rate	4.32%	[2],[3]
Outstanding Borrowings	120,000	[3]	120,000	[3]
Revolving credit facility
Line of Credit Facility [Line Items]
Effective interest rate	1.46%	[5]	1.47%	[5]
Outstanding Borrowings	200,044		170,044
Remaining Borrowing Capacity	649,956		679,956
Total Borrowing Capacity	$850,000		$850,000
[1]	The facility fee is based on the unsecured revolving credit facility's total borrowing capacity.
[2]	Represents the rate at which interest expense is recorded for financial reporting purposes, which reflects the effect of the interest rate swaps, excluding debt issuanceB costs.
[3]	As of DecemberB 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.156% and 0.165%, respectively, for these loans.
[4]	As of DecemberB 31, 2014 and December 31, 2013, the applicable LIBOR rate was 0.155% and 0.16875%, respectively, for this loan.
[5]	Calculated based on one-month LIBOR plus 1.30% as of DecemberB 31, 2014 and DecemberB 31, 2013.

Debt_Notes_Payable_Debt_Covena

Debt - Notes Payable - Debt Covenants and Restrictions (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Leverage ratio on credit facility (maximum .6) (percent)	0.6
Fixed charge coverage ratio (minimum 1.50) (percent)	1.5
Secured leverage ratio (maximum) (percent)	0.4
Unencumbered leverage ratio (maximum .6) (percent)	0.6
Unsecured interest expense ratio (minimum 1.75)(percent)	1.75
Minimum tangible net worth value	$1,500,000,000
Percentage of net proceeds from future equity issuances (minimum 85%) (percent)	85.00%
Unencumbered asset value	400,000,000
Revolving credit facility
Debt Instrument [Line Items]
Total Borrowing Capacity	$850,000,000	$850,000,000
Secured leverage ratio (maximum) (percent)	0.45

Debt_Minimum_Principal_Payment

Debt - Minimum Principal Payments Due for Notes Payable (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Fiscal Year Maturity
2015	$131,718
2016	134,612
2017	46,822
2018	472,613
2019	308,768
Thereafter	271,519
Total	$1,366,052

Risk_Management_and_Use_of_Fin2

Risk Management and Use of Financial Instruments - Schedule of Interest Rate Swap Derivative Instruments (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
Maskew Retail Park | Notes Payable, Other Payables
Derivative [Line Items]
Early repayment of senior debt	$23,800,000
LIBOR | Interest Rate Swap | QualifyingInterestRateSwapOnPointWestOneDebt [Member]
Derivative [Line Items]
Notional Amount	10,716,000	[1]	11,041,000	[1]
Fair Value	-135,000	[1]	-205,000	[1]
Rate	1.30%	[1]	1.20%	[1]
Index	LIBOR	[1]
Maturity Date	6-Dec-16	[1]
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on TD Term Loan and WF Term Loan 1
Derivative [Line Items]
Notional Amount	200,000,000	[2]	200,000,000	[2]
Fair Value	1,467,000	[2]	2,854,000	[2]
Rate	0.80%	[2]	0.80%	[2]
Index	LIBOR	[2]
Maturity Date	7-Mar-18	[2]
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Atrium I Debt
Derivative [Line Items]
Notional Amount	21,580,000	[1]	22,516,000	[1]
Fair Value	-354,000	[1]	-361,000	[1]
Rate	1.60%	[1]	1.60%	[1]
Index	LIBOR	[1]
Maturity Date	31-May-18	[1]
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Wells Fargo Term Loan
Derivative [Line Items]
Notional Amount	200,000,000		200,000,000
Fair Value	-1,540,000		667,000
Rate	1.50%		1.40%
Index	LIBOR
Maturity Date	15-Jan-19
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Easton III Debt
Derivative [Line Items]
Notional Amount	6,280,000	[1]	6,466,000	[1]
Fair Value	-127,000	[1]	-86,000	[1]
Rate	1.80%	[1]	1.80%	[1]
Index	LIBOR	[1]
Maturity Date	31-Jan-19	[1]
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on TD Term Loan
Derivative [Line Items]
Notional Amount	50,000,000	[2]	50,000,000	[2]
Fair Value	266,000	[2]	1,690,000	[2]
Rate	1.40%	[2]	1.30%	[2]
Index	LIBOR	[2]
Maturity Date	6-Mar-20	[2]
LIBOR | Interest Rate Swap | csg_QualifyingInterestRateSwapOnCapitalOneDebt [Member]
Derivative [Line Items]
Notional Amount	120,000,000		120,000,000
Fair Value	-5,543,000		-1,515,000
Rate	2.40%		2.40%
Index	LIBOR
Maturity Date	31-Jan-21
GBP LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Maskew Retail Park Debt
Derivative [Line Items]
Notional Amount	0	[3]	23,161,000	[3]
Fair Value	$0	[3]	($398,000)	[3]
Rate	0.00%	[3]	2.90%	[3]
Index	GBP LIBOR	[3]
Maturity Date	10-Aug-14	[3]
[1]	We assumed this swap in connection with the purchase of the Duke Portfolio on March 1, 2013. This swap was designated as a hedging instrument under ASC 815-20 as of December 31, 2013. The swap was not designated as a hedging instrument under ASC 815-20 during the period from March 1, 2013 to March 31, 2013.
[2]	We entered into these swaps in connection with the origination of the TD Term Loan and WF Term Loan #1 in March 2013. These swaps were designated as hedging instruments under ASC 815-20 as of December 31, 2013. These swaps were not designated as a hedging instruments under ASC 815-20 during the period from March 11, 2013 and MarchB 12, 2013, respectively, to May 29, 2013.
[3]	In connection with the Maskew Retail Park sale we paid off the secured debt with an outstanding principal of $23.8 million and terminated the related swap prior to the maturity date.

Risk_Management_and_Use_of_Fin3

Risk Management and Use of Financial Instruments - Balance Sheet Location (Details) (Derivatives Designated as Cash Flow Hedges:, USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid Expenses and Other Assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	$1,733	$5,211
Accounts Payable, Accrued Expenses and Other Liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	$7,699	$2,565

Risk_Management_and_Use_of_Fin4

Risk Management and Use of Financial Instruments - Cash Flow Hedges (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Cash flow hedge gain (loss) expected to be reclassified within twelve months	$7,600,000
Derivatives Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Loss Recognized in Other Comprehensive Income (OCI) (Effective Portion)	-17,851,000	-116,000	-7,024,000
Loss Reclassified from AOCI into Interest Expense (Effective Portion)	-9,169,000	-4,054,000	-4,267,000
Net Change in Fair Value of Derivative Financial Instruments (Ineffective Portion and Amount Excluded from Effectiveness Testing)	71,000	38,000	17,000
Loss on Swap Termination Recognized in Loss from Early Extinguishment of Debt	0	0	-14,306,000
Derivatives Not Designated as Cash Flow Hedges:
Derivatives, Fair Value [Line Items]
Loss Recognized in Other Comprehensive Income (OCI) (Effective Portion)	0	1,772,000	564,000
Loss Reclassified from AOCI into Interest Expense (Effective Portion)	0	-1,414,000	0
Net Settlement Payments from Non-Qualifying Interest Rate Swaps	$0	($1,158,000)	($682,000)

Risk_Management_and_Use_of_Fin5

Risk Management and Use of Financial Instruments - Concentration of Credit Risk (Details) (Rental Revenue, Tenant Concentration Risk)	Dec. 31, 2014
	tenant
Rental Revenue | Tenant Concentration Risk
Concentration Risk [Line Items]
Number of tenants (exceeding 10 percent of total rental revenues)	0

Future_Minimum_Rents_Schedule_

Future Minimum Rents - Schedule of Minimum Future Rents to be Received on Non-cancelable Operating Leases (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2015	$214,235
2016	195,024
2017	182,642
2018	166,208
2019	147,567
Thereafter	456,763
Total	$1,362,439

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012		Jun. 30, 2012
Schedule of Equity Method Investments [Line Items]
Amount of obligation related to reimbursement of personnel costs expenses						$2,500,000
Investment management fee of all real estate investments	0.50%
Investment management fee of the aggregate monthly net operating income	5.00%
Percentage of acquisition fee	1.50%
Percentage of purchase price of real estate investments acquired for calculating maximum acquisition consulting fees	6.00%
Percentage of funds advanced with respect to mortgages for calculating maximum acquisition consulting fees	6.00%
Investment Advisory, Management and Administrative Fees [Abstract]
Investment Management Fees		489,000		29,695,000
Transition Services Agreement Fees		686,000		2,500,000
Acquisition-Related Fees		1,895,000		5,159,000
Property Management Fees		1,128,000	[1]	1,556,000	[1]
Leasing Commissions		836,000	[1]	876,000	[1]
Construction Supervision and Management Fees		873,000	[1]	1,049,000	[1]
Brokerage Fees, Expense		585,000		388,000
Mortgage Banking Fees and Other		0		26,000
Total		6,492,000		41,249,000
Percentage of acquisition fee	0.75%
Acquisition related fees	200,000
Investment Advisor
Investment Advisory, Management and Administrative Fees [Abstract]
Accounts payable to related parties, current		$600,000		$11,100,000
Minimum
Investment Advisory, Management and Administrative Fees [Abstract]
Percentage of gross revenues received from property for calculating consulting services fees	2.00%
Maximum
Investment Advisory, Management and Administrative Fees [Abstract]
Percentage of gross revenues received from property for calculating consulting services fees	5.00%
[1]	Such fees for each service ranged from 2.0% to 5.0% of gross revenues received from a property that we owned.

Equity_Incentive_Plan_and_Perf2

Equity Incentive Plan and Performance Bonus Plan - Narrative (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

Mar. 15, 2014

21-May-13

Mar. 15, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Feb. 26, 2014

Sep. 25, 2012

Nov. 10, 2014

Jan. 29, 2014

Feb. 07, 2013

employee

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of employees granted restricted common shares

25

21

Vesting description

One-third of the restricted shares granted to our named executive officers and employees will vest on each of the first three anniversaries of grant if the grantee is employed by the Company on such anniversary

One-third of the restricted shares granted to our named executive officers and employees will vest in each of the first three anniversaries of grant if the grantee is employed by the Company on such anniversary

Vesting percent

33.33%

Service vesting period

3 years

Stock based compensation expense

$6,057,000

[1]

$5,713,000

[1]

$445,000

[1]

Shares vested period

JulyB 10, 2013

Number of common shares granted to employees (in shares)

27,500

Compensation expense

3,800,000

Martin Reid

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Restricted common shares granted (in shares)

90,000

Executive Officers and Other Senior Management

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common shares granted (in shares)

375,000

Executive Officers and Other Senior Management | Restricted Stock

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Grant date fair value (in usd per share)

7.74

Aggregate number of restricted common shares granted to employees (in shares)

401,875

281,625

300,000

Stock based compensation expense

245,000

Value of shares issued

3,000,000

Estimated forfeiture rate

5.00%

5.00%

Named Executive Officers and Our Employees

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock based compensation expense

1,900,000

1,000,000

Employees

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Aggregate number of restricted common shares granted to employees (in shares)

143,450

117,300

Jack Cueno

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares awarded for retirement

200,000

Cash compensation expense

3,300,000

Compensation expense to be recognized in 2015

2,300,000

Jack Cueno | General and Administrative Expense [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Compensation expense recognized

5,100,000

2013 Equity Incentive Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of common shares available for grant (in shares)

4,045,493

Common shares granted (in shares)

33,100

Grant date fair value (in usd per share)

$7.87

2013 Equity Incentive Plan | Charles Black

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common shares granted (in shares)

20,000

2013 Equity Incentive Plan | James Orphanides

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common shares granted (in shares)

5,000

2013 Equity Incentive Plan | James Francis

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common shares granted (in shares)

1,550

2004 Equity Incentive Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock based compensation expense

150,000

2004 Equity Incentive Plan | Charles Black

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Value of shares issued

100,000

2004 Equity Incentive Plan | James Orphanides

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Value of shares issued

25,000

2004 Equity Incentive Plan | Louis Salvatore

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common shares granted (in shares)

5,000,000

Value of shares issued

$25,000

2004 Equity Incentive Plan | Mark Brugger

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common shares granted (in shares)

1,550,000

[1]

2013 compensation expense includes expenses incurred in the Listing Expense totaling $3.8 million.

Equity_Incentive_Plan_and_Perf3

Equity Incentive Plan and Performance Bonus Plan - Summary of Time-Based Restricted Common Shares (Details) (USD $)	0 Months Ended	12 Months Ended
	Jan. 29, 2014	Dec. 31, 2014
2013 Equity Incentive Plan
Common Shares
Granted (in shares)	33,100
Time-Based Restricted Stock
Common Shares
Nonvested, Beginning Balance (in shares)		598,925
Granted (in shares)		545,325
Vested (in shares)		-317,133
Forfeited (in shares)		-26,418
Canceled (in shares)		0	[1]
Nonvested, Beginning Balance (in shares)		800,699
Weighted-Average Grant Date Fair Value per Share
Nonvested, Beginning Balance (usd per share)		$10
Granted (usd per share)		$7.74
Vested (usd per share)		$7.77
Canceled (usd per share)		$8.40
Nonvested, Ending Balance (usd per share)		$8.68
Vested
Beginning Balance (in shares)		0
Granted (in shares)		0
Vested (in shares)		317,133
Canceled (in shares)		-95,313	[1]
Ending Balance (in shares)		221,820
Time-Based Restricted Stock | 2013 Equity Incentive Plan
Vested
Shares tendered to satisfy tax requirements (in shares)		47,206
Time-Based Restricted Stock | 2012 Equity Incentive Plan
Vested
Shares tendered to satisfy tax requirements (in shares)		48,107
[1]	47,206 and 48,107 common shares were tendered in accordance with the terms of the 2013 and 2012 equity incentive awards, respectively, to satisfy minimum state tax withholding requirements related to the restricted common shares that have vested. We accept the return of shares at the current quoted closing share price of the Company's common shares on the NYSE to satisfy tax obligations.

Equity_Incentive_Plan_and_Perf4

Equity Incentive Plan and Performance Bonus Plan - Summary of Compensation Expense and Details (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$6,057	[1]	$5,713	[1]	$445	[1]
Unamortized Compensation Costs	4,616		4,444		6,167
Shares available for the future awards	4,045,493	[2]	4,597,500	[2]	19,298,000	[2]
Listed
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense			3,800
Severance expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$2,700
[1]	2013 compensation expense includes expenses incurred in the Listing Expense totaling $3.8 million.
[2]	Shares available for the future awards includes units under the 2013 equity incentive plan

Equity_Incentive_Plan_and_Perf5

Equity Incentive Plan and Performance Bonus Plan - 401(k) Plan Narrative (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Defined Contribution Plan Disclosure [Line Items]
Company contributions to plan	$0.20
Option One
Defined Contribution Plan Disclosure [Line Items]
Employer match percentage	100.00%
Employee contribution percentage	3.00%
Option Two
Defined Contribution Plan Disclosure [Line Items]
Employer match percentage	50.00%
Option Two | Minimum
Defined Contribution Plan Disclosure [Line Items]
Employee contribution percentage	3.00%
Option Two | Maximum
Defined Contribution Plan Disclosure [Line Items]
Employee contribution percentage	4.00%

Shareholders_Equity_Additional

Shareholders' Equity - Additional Information (Details) (USD $)	0 Months Ended		12 Months Ended
	Jun. 26, 2013	21-May-13	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Nov. 06, 2013	Jul. 08, 2013	Jun. 26, 2013
Equity [Abstract]
Authorized aggregate number of shares (in shares)					1,000,000,000
Common Shares of Beneficial Interest, shares authorized (in shares)			990,000,000		990,000,000
Common shares, par value (in usd per share)			$0.01	$0.01	$0.01
Preferred shares under beneficial interest (in shares)					10,000,000
Preferred stock, par value (in usd per share)					$0.01
Repurchase and Cancellation of Common Shares	$125,000,000	$125,000,000	$125,000,000
Repurchase and Cancellation of Common Shares (in shares)	12,376,237
Common Stock Purchase Price Per Share								$10.10
Number Of Share Issued To Dividend Reinvestment Plan		8,869,829
Proceeds from Issuance Initial Public Offering		84,300,000
Stock Repurchased During Period, Shares			4,996,935	5,648,490
Stock Repurchased During Period, Value			47,400,000	52,900,000
Common Stock, Fractional Shares, Eliminated							14,501
Aggregate offering price						$250,000,000

Shareholders_Equity_Components

Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$4,596	($8,587)	($23,664)
Other Comprehensive Income Before Reclassifications	-37,034	9,129	15,077
Ending balance	-23,269	4,596	-8,587
Foreign Currency Translation Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	1,670	-6,164	-10,579
Other Comprehensive Income Before Reclassifications	-19,183	7,834	4,415
Ending balance	-17,513	1,670	-6,164
Swap Fair Value Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	2,926	-2,423	-13,085
Other Comprehensive Income Before Reclassifications	-17,851	1,295	10,662
Ending balance	-5,756	2,926	-2,423
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	9,169	4,054
Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	0	0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Swap Fair Value Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	$9,169	$4,054

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments and Investments - Additional Information (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Period to reset variable rate on derivative	90 days	90 days
Impairment of Real Estate	$27,563	$0	$0
Real Estate Investment Property, Net	2,089,190	2,074,444
Discount rate	12.00%
Terminal cap rate	6.50%
Expense growth rate	3.00%
70 Hudson Street
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real Estate Investment Property, Net	$94,000
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market growth rate	3.00%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market growth rate	3.40%

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments and Investments - Schedule of Fair Value of Assets and Liabilities Measured On Recurring Basis (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Assets (Liabilities)
Fair Value of Real Estate at Impairment	$2,089,190		$2,074,444
Quoted Markets Prices (Level 1) | Fair Value, Measurements, Recurring
Assets (Liabilities)
Cash Equivalents	1,573		1,069
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	0		0
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	0		0
Investment in CBRE Strategic Partners Asia	0		0
Fair Value of Real Estate at Impairment	0	[1]
Significant Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Assets (Liabilities)
Cash Equivalents	0		0
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	1,733		5,211
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	-7,699		-2,565
Investment in CBRE Strategic Partners Asia	0		0
Fair Value of Real Estate at Impairment	0	[1]
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Assets (Liabilities)
Cash Equivalents	0		0
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	0		0
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	0		0
Investment in CBRE Strategic Partners Asia	6,870		9,676
Fair Value of Real Estate at Impairment	94,000	[1]
Fair Value | Fair Value, Measurements, Recurring
Assets (Liabilities)
Cash Equivalents	1,573		1,069
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	1,733		5,211
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	-7,699		-2,565
Investment in CBRE Strategic Partners Asia	6,870		9,676
Fair Value of Real Estate at Impairment	$94,000	[1]
[1]	Represents a non-recurring fair value measurement.

Fair_Value_of_Financial_Instru4

Fair Value of Financial Instruments and Investments - Investment in CBRE Strategic Partners Asia Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$9,676	$8,098
Distributions	-2,724
Total Income on Fair Value Adjustment	769	1,578
Unrealized Loss in Fair Value Adjustment	-851
Ending Balance	$6,870	$9,676

Fair_Value_of_Financial_Instru5

Fair Value of Financial Instruments and Investments - Summary of Notes Payable and Estimated Fair Value (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Secured Notes Payable, Net	$610,608		$681,200
Unsecured Term Loan Facilities	570,000		570,000
Unsecured Credit Facility	570,000		570,000
Book Value | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Secured Notes Payable, Net	610,608	[1]	681,200	[1]
Book Value | Unsecured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured Term Loan Facilities	570,000	[1]	570,000	[1]
Unsecured Credit Facility	200,044	[1]	170,044	[1]
Fair Value | Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Secured Notes Payable, Net	628,194		721,728	[1]
Fair Value | Unsecured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured Term Loan Facilities	577,196	[1]	570,272	[1]
Unsecured Credit Facility	$200,044	[1]	$170,044	[1]
[1]	Items are measured using Level 2 inputs.

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2014
	renewal_option
Commitments and Contingencies Disclosure [Abstract]
Number of lease renewal options	3
Lease agreement period	10 years

Commitments_and_Contingencies_2

Commitments and Contingencies - Maturity of Ground Lease (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]
2015	$273
2016	273
2017	273
2018	276
2019	308
Thereafter	4,474
Total	$5,877

Segment_Disclosure_Narrative_D

Segment Disclosure - Narrative (Details)	12 Months Ended
	Dec. 31, 2014
	segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment_Disclosure_Comparison_

Segment Disclosure - Comparison of Net Operating Income (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Rental									$210,180	$196,706	$145,432
Tenant Reimbursements									59,730	53,306	33,411
Other Property Income									1,780	0	0
Total Revenues	68,750	68,147	66,628	68,165	65,238	64,786	66,556	53,432	271,690	250,012	178,843
Property and Related Expenses:
Real Estate Taxes									39,567	37,971	22,636
Total Expenses									246,784	210,983	176,839
Net Operating Income									195,366	180,820	134,743
Operating Segments | Domestic Industrial Properties - Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Rental									60,241	54,256	42,362
Tenant Reimbursements									15,866	15,848	8,861
Other Property Income									711	0
Total Revenues									76,818	70,104	51,223
Property and Related Expenses:
Property Operating									6,263	4,139	3,207
Real Estate Taxes									12,756	14,004	7,621
Total Expenses									19,019	18,143	10,828
Net Operating Income									57,799	51,961	40,395
Operating Segments | Office Properties
Segment Reporting, Asset Reconciling Item [Line Items]
Rental									147,619	138,566	99,111
Tenant Reimbursements									43,816	37,294	24,424
Other Property Income									1,069	0	0
Total Revenues									192,504	175,860	123,535
Property and Related Expenses:
Property Operating									30,341	26,868	17,983
Real Estate Taxes									26,811	23,967	15,015
Total Expenses									57,152	50,835	32,998
Net Operating Income									135,352	125,025	90,537
Operating Segments | Other Properties
Segment Reporting, Asset Reconciling Item [Line Items]
Rental									2,320	3,884	3,959
Tenant Reimbursements									48	164	126
Total Revenues									2,368	4,048	4,085
Property and Related Expenses:
Property Operating									153	214	274
Total Expenses									153	214	274
Net Operating Income									$2,215	$3,834	$3,811

Segment_Disclosure_Reconciliat

Segment Disclosure - Reconciliation to Consolidated Net Income (Loss) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation to Consolidated Net Income (Loss)
Total Segment Net Operating Income									$195,366	$180,820	$134,743
EXPENSES
General and Administrative									31,333	23,138	14,660
Investment Management Fee									0	489	29,695
Acquisition-Related									2,272	2,690	7,752
Depreciation and Amortization									109,292	102,793	72,383
Impairment of Real Estate									27,563	0	0
Transition and Listing									0	12,681	8,249
Gross Loss									24,906	39,029	2,004
OTHER EXPENSES AND INCOME
Interest and Other Income									652	1,321	2,235
Interest Expense									-55,311	-47,295	-33,845
Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments									71	614	-118
Gain on Sale of Real Estate									21,164	0	0
Loss on Early Extinguishment of Debt									-477	-1,051	-17,284
Gain on Conversion of Equity Interest to Controlling Interest									0	75,763	0
(Loss) Income Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities									-8,995	68,381	-47,008
Provision For Income Taxes									-780	-287	-266
Equity in Income of Unconsolidated Entities									28,823	12,111	3,959
INCOME (LOSS) FROM CONTINUING OPERATIONS	-7,892	18,468	5,153	3,319	1,191	745	-3,730	81,999	19,048	80,205	-43,315
DISCONTINUED OPERATIONS
Income from Discontinued Operations									0	382	720
Gain (Loss) on Sale of Real Estate									0	2,759	-413
Income From Discontinued Operations					2,846	114	90	91	0	3,141	307
NET INCOME (LOSS)	($7,892)	$18,468	$5,153	$3,319	$4,037	$859	($3,640)	$82,090	$19,048	$83,346	($43,008)

Segment_Disclosure_Condensed_A

Segment Disclosure - Condensed Assets (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$2,869,808		$3,010,596		$2,554,862
Domestic Industrial Properties - Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	916,038		725,566		678,930
Office Properties
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	1,504,285		1,639,875		1,115,906
Other Properties
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	0		50,209		66,924
Non-Segment Assets
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	449,485	[1]	594,946	[1]	616,276
Non-Segment Construction in Progress and Other Assets-Variable Interest Entity [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$0		$0		$76,826
[1]	Non-segment assets primarily include our investments in unconsolidated entities.

Segment_Disclosure_Segment_Dis

Segment Disclosure Segment Disclosure-Capital Expenditures (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Capital Expenditures	$227,729	$592,355	$325,232
Domestic Industrial Properties - Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Capital Expenditures	216,532	82,274	239,470
Office Properties
Segment Reporting, Asset Reconciling Item [Line Items]
Capital Expenditures	11,197	510,081	29,582
Non-Segment Construction in Progress and Other Assets-Variable Interest Entity [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Capital Expenditures	$0	$0	$56,180

Earnings_per_Share_Attributabl2

Earnings per Share Attributable to Common Shareholders (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations	($7,892)	$18,468	$5,153	$3,319	$1,191	$745	($3,730)	$81,999	$19,048	$80,205	($43,315)
(Income) Loss from Continuing Operations Attributable to Noncontrolling Interests									0	-82	32
Allocation to Participating Securities (Nonvested Time-Based Shares)									-454	-360	-90
Numerator for Basic and Diluted Income (Loss) from Continuing Operations									18,594	79,763	-43,373
Income from Discontinued Operations					2,846	114	90	91	0	3,141	307
Numerator for Basic and Diluted Net Income (Loss) Attributable to Common Shareholders									$18,594	$82,904	($43,066)
Basic Weighted Average Vested Shares Outstanding (in shares)									236,866,656	242,379,680	248,154,277
Diluted Weighted Average Vested Shares Outstanding (in shares)									236,866,656	242,379,680	248,154,277
Income (Loss) from Continuing Operations Available to Common Shareholders per Share (in usd per share)	($0.03)	$0.08	$0.02	$0.01	$0.02	$0	($0.01)	$0.33	$0.08	$0.33	($0.17)
Income (Loss) from Discontinued Operations Available to Common Shareholders per Share (in usd per share)									$0	$0.01	$0
Basic and Diluted Net Income (Loss) Per Share Attributable to Common Shareholders (in usd per share)									$0.08	$0.34	($0.17)
Potentially dilutive performance-based shares (in shares)											375,000

Distributions_Details

Distributions (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Distributions declared per common share (in usd per share)	$0.50	$0.55	$0.60
Less: Distributions declared in the current period, and paid in the subsequent period (usd per share)	($0.04)	($0.04)	($0.15)
Add: Distributions declared in the prior year, and paid in the current year (usd per share)	$0.04	$0.15	$0.15
Distributions paid per common share (in usd per share)	$0.50	$0.66	$0.60
Distributions to shareholders	$119.30	$159.60	$144.30

DistributionsIncome_Tax_Treatm

Distributions-Income Tax Treatment for Distributions Declared (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Schedule Of Group Distributions [Line Items]
Distributions declared per common share (in usd per share)	$0.50		$0.55		$0.60
Distributions declared per common share percentage	100.00%		100.00%		100.00%
Distributions paid per common share (in usd per share)	$0.50		$0.66		$0.60
Ordinary Income
Schedule Of Group Distributions [Line Items]
Distributions declared per common share (in usd per share)	$0.32		$0.29		$0.09
Distributions declared per common share percentage	63.50%		44.10%		14.50%
Return of Capital
Schedule Of Group Distributions [Line Items]
Distributions declared per common share (in usd per share)	$0.12		$0.36		$0.51
Distributions declared per common share percentage	23.70%		54.80%		85.50%
Capital Gain
Schedule Of Group Distributions [Line Items]
Distributions declared per common share (in usd per share)	$0.06	[1]	$0.01	[1]	$0	[1]
Distributions declared per common share percentage	12.80%	[1]	1.10%	[1]	0.00%	[1]
[1]	apital gain is comprised of a recaptured Section 1250 gain.

Quarterly_Financial_Informatio2

Quarterly Financial Information (unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Total Revenue	$68,750	$68,147	$66,628	$68,165	$65,238	$64,786	$66,556	$53,432	$271,690	$250,012	$178,843
Income from Continuing Operations	-7,892	18,468	5,153	3,319	1,191	745	-3,730	81,999	19,048	80,205	-43,315
Income from Discontinued Operations					2,846	114	90	91	0	3,141	307
Net Income (Loss)	-7,892	18,468	5,153	3,319	4,037	859	-3,640	82,090	19,048	83,346	-43,008
Net Income (Loss) Attributable to Common Shareholders	($7,892)	$18,468	$5,153	$3,319	$4,037	$856	($3,636)	$82,007	$19,048	$83,264	($42,976)
Net Income (Loss) per common share-basic and diluted (in usd per share)	($0.03)	$0.08	$0.02	$0.01	$0.02	$0	($0.01)	$0.33	$0.08	$0.33	($0.17)

Subsequent_Events_Additional_D

Subsequent Events - Additional Details (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 08, 2014

Dec. 05, 2014

Aug. 15, 2014

Jan. 16, 2014

Dec. 11, 2013

Nov. 07, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Feb. 20, 2015

Feb. 10, 2015

Jan. 23, 2015

Feb. 02, 2015

Jan. 29, 2014

Jan. 09, 2015

Subsequent Event [Line Items]

Sales of real estate

$20.70

$26.20

$1.90

$10.50

$40

$11

Distributions declared per common share (in usd per share)

$0.50

$0.55

$0.60

Subsequent Event

Subsequent Event [Line Items]

Sales of real estate

16.4

Area of land

11.8

Payments to acquire land

1.7

Distributions declared per common share (in usd per share)

$0.04

Duke JV | Subsequent Event

Subsequent Event [Line Items]

Sales of real estate

20.6

One WaySide Road | Subsequent Event

Subsequent Event [Line Items]

Repayment of notes payable

$23.80

2013 Equity Incentive Plan

Subsequent Event [Line Items]

Granted (in shares)

33,100

2013 Equity Incentive Plan | Charles Black

Subsequent Event [Line Items]

Granted (in shares)

20,000

2013 Equity Incentive Plan | Charles Black | Restricted Stock Units (RSUs) [Member] | Subsequent Event

Subsequent Event [Line Items]

Granted (in shares)

20,000

2013 Equity Incentive Plan | Mark Brugger | Restricted Stock Units (RSUs) [Member] | Subsequent Event

Subsequent Event [Line Items]

Granted (in shares)

5,000

2013 Equity Incentive Plan | James Francis

Subsequent Event [Line Items]

Granted (in shares)

1,550

2013 Equity Incentive Plan | James Francis | Restricted Stock Units (RSUs) [Member] | Subsequent Event

Subsequent Event [Line Items]

Granted (in shares)

5,000

2013 Equity Incentive Plan | James Orphanides

Subsequent Event [Line Items]

Granted (in shares)

5,000

2013 Equity Incentive Plan | James Orphanides | Restricted Stock Units (RSUs) [Member] | Subsequent Event

Subsequent Event [Line Items]

Granted (in shares)

5,000

2013 Equity Incentive Plan | Louis Salvatore | Restricted Stock Units (RSUs) [Member] | Subsequent Event

Subsequent Event [Line Items]

Granted (in shares)

5,000

Schedule_IIISchedule_of_Invest1

Schedule III-Schedule of Investments in Real Estate (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	610,608
Land	416,537
Acquisition costs, site improvements	227,480
Land Available for Expansion	23,368
Acquisition costs, building and improvements	1,528,719
Acquisition costs, tenant improvements	133,247
Acquisition costs, total	2,329,351
Improvements Subsequent to Purchase Date	-188
Total Cost	2,329,163		2,270,222	1,804,885	1,514,633
Accumulated Depreciation and Amortization	-239,973		-195,778	-132,129	-88,084
Net Invest- ments in Real Estate	2,089,190
Building and Building Improvements
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation Life	39 years
Minimum | Site Improvements
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation Life	15 years
Maximum | Site Improvements
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation Life	25 years
REMEC Corporate Campus
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	11,862
Acquisition costs, site improvements	0
Land Available for Expansion	0
Acquisition costs, building and improvements	8,933
Acquisition costs, tenant improvements	3,217
Acquisition costs, total	24,012
Improvements Subsequent to Purchase Date	95
Total Cost	24,107
Accumulated Depreciation and Amortization	-5,041
Net Invest- ments in Real Estate	19,066
Depreciation Life	39 years	[1]
300 Constitution
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	5,441
Acquisition costs, site improvements	0
Land Available for Expansion	150
Acquisition costs, building and improvements	13,826
Acquisition costs, tenant improvements	733
Acquisition costs, total	20,150
Improvements Subsequent to Purchase Date	0
Total Cost	20,150
Accumulated Depreciation and Amortization	-4,337
Net Invest- ments in Real Estate	15,813
Depreciation Life	39 years	[1]
660 North Dorothy
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	1,576
Acquisition costs, site improvements	417
Land Available for Expansion	0
Acquisition costs, building and improvements	3,402
Acquisition costs, tenant improvements	199
Acquisition costs, total	5,594
Improvements Subsequent to Purchase Date	382
Total Cost	5,976
Accumulated Depreciation and Amortization	-1,559
Net Invest- ments in Real Estate	4,417
Depreciation Life	39 years	[1]
505 Century
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	950
Acquisition costs, site improvements	304
Land Available for Expansion	0
Acquisition costs, building and improvements	3,685
Acquisition costs, tenant improvements	119
Acquisition costs, total	5,058
Improvements Subsequent to Purchase Date	1,263
Total Cost	6,321
Accumulated Depreciation and Amortization	-1,582
Net Invest- ments in Real Estate	4,739
Depreciation Life	39 years	[1]
631 International
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	923
Acquisition costs, site improvements	238
Land Available for Expansion	0
Acquisition costs, building and improvements	2,912
Acquisition costs, tenant improvements	285
Acquisition costs, total	4,358
Improvements Subsequent to Purchase Date	548
Total Cost	4,906
Accumulated Depreciation and Amortization	-1,155
Net Invest- ments in Real Estate	3,751
Depreciation Life	39 years	[1]
602 Central Blvd.
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	2,917
Acquisition costs, site improvements	251
Land Available for Expansion	1,870
Acquisition costs, building and improvements	13,957
Acquisition costs, tenant improvements	0
Acquisition costs, total	18,995
Improvements Subsequent to Purchase Date	672
Total Cost	19,667
Accumulated Depreciation and Amortization	-2,985
Net Invest- ments in Real Estate	16,682
Depreciation Life	39 years	[1]
Bolingbrook Point III
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	2,423
Acquisition costs, site improvements	522
Land Available for Expansion	0
Acquisition costs, building and improvements	13,434
Acquisition costs, tenant improvements	164
Acquisition costs, total	16,543
Improvements Subsequent to Purchase Date	51
Total Cost	16,594
Accumulated Depreciation and Amortization	-2,932
Net Invest- ments in Real Estate	13,662
Depreciation Life	39 years	[1]
Fairforest Bldg. 5
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	7,624
Land	1,637
Acquisition costs, site improvements	2,462
Land Available for Expansion	150
Acquisition costs, building and improvements	12,017
Acquisition costs, tenant improvements	100
Acquisition costs, total	16,366
Improvements Subsequent to Purchase Date	11
Total Cost	16,377
Accumulated Depreciation and Amortization	-3,565
Net Invest- ments in Real Estate	12,812
Depreciation Life	39 years	[1]
Fairforest Bldg. 6
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,710
Land	463
Acquisition costs, site improvements	506
Land Available for Expansion	719
Acquisition costs, building and improvements	3,753
Acquisition costs, tenant improvements	459
Acquisition costs, total	5,900
Improvements Subsequent to Purchase Date	0
Total Cost	5,900
Accumulated Depreciation and Amortization	-1,374
Net Invest- ments in Real Estate	4,526
Depreciation Life	39 years	[1]
Fairforest Bldg. 7
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	490
Acquisition costs, site improvements	463
Land Available for Expansion	169
Acquisition costs, building and improvements	4,503
Acquisition costs, tenant improvements	0
Acquisition costs, total	5,625
Improvements Subsequent to Purchase Date	595
Total Cost	6,220
Accumulated Depreciation and Amortization	-1,579
Net Invest- ments in Real Estate	4,641
Depreciation Life	39 years	[1]
HJ Park Bldg. 1
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	575
Acquisition costs, site improvements	468
Land Available for Expansion	0
Acquisition costs, building and improvements	2,472
Acquisition costs, tenant improvements	12
Acquisition costs, total	3,527
Improvements Subsequent to Purchase Date	7
Total Cost	3,534
Accumulated Depreciation and Amortization	-709
Net Invest- ments in Real Estate	2,825
Depreciation Life	39 years	[1]
North Rhett I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,914
Land	1,290
Acquisition costs, site improvements	366
Land Available for Expansion	0
Acquisition costs, building and improvements	9,627
Acquisition costs, tenant improvements	428
Acquisition costs, total	11,711
Improvements Subsequent to Purchase Date	946
Total Cost	12,657
Accumulated Depreciation and Amortization	-2,421
Net Invest- ments in Real Estate	10,236
Depreciation Life	39 years	[1]
North Rhett II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,374
Land	539
Acquisition costs, site improvements	144
Land Available for Expansion	0
Acquisition costs, building and improvements	5,670
Acquisition costs, tenant improvements	26
Acquisition costs, total	6,379
Improvements Subsequent to Purchase Date	604
Total Cost	6,983
Accumulated Depreciation and Amortization	-1,749
Net Invest- ments in Real Estate	5,234
Depreciation Life	39 years	[1]
North Rhett III
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	500
Acquisition costs, site improvements	209
Land Available for Expansion	131
Acquisition costs, building and improvements	3,366
Acquisition costs, tenant improvements	18
Acquisition costs, total	4,224
Improvements Subsequent to Purchase Date	29
Total Cost	4,253
Accumulated Depreciation and Amortization	-754
Net Invest- ments in Real Estate	3,499
Depreciation Life	39 years	[1]
North Rhett IV
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	7,614
Land	2,203
Acquisition costs, site improvements	1,716
Land Available for Expansion	229
Acquisition costs, building and improvements	12,445
Acquisition costs, tenant improvements	91
Acquisition costs, total	16,684
Improvements Subsequent to Purchase Date	0
Total Cost	16,684
Accumulated Depreciation and Amortization	-3,225
Net Invest- ments in Real Estate	13,459
Depreciation Life	39 years	[1]
Jedburg Commerce Park
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	3,911
Acquisition costs, site improvements	3,026
Land Available for Expansion	118
Acquisition costs, building and improvements	20,381
Acquisition costs, tenant improvements	149
Acquisition costs, total	27,585
Improvements Subsequent to Purchase Date	305
Total Cost	27,890
Accumulated Depreciation and Amortization	-5,527
Net Invest- ments in Real Estate	22,363
Depreciation Life	39 years	[1]
Mount Holly Bldg.
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,374
Land	1,012
Acquisition costs, site improvements	1,050
Land Available for Expansion	0
Acquisition costs, building and improvements	3,699
Acquisition costs, tenant improvements	18
Acquisition costs, total	5,779
Improvements Subsequent to Purchase Date	55
Total Cost	5,834
Accumulated Depreciation and Amortization	-1,282
Net Invest- ments in Real Estate	4,552
Depreciation Life	39 years	[1]
Orangeburg Park Bldg.
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,397
Land	456
Acquisition costs, site improvements	641
Land Available for Expansion	88
Acquisition costs, building and improvements	3,636
Acquisition costs, tenant improvements	93
Acquisition costs, total	4,914
Improvements Subsequent to Purchase Date	0
Total Cost	4,914
Accumulated Depreciation and Amortization	-1,090
Net Invest- ments in Real Estate	3,824
Depreciation Life	39 years	[1]
Kings Mt. I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,193
Land	66
Acquisition costs, site improvements	362
Land Available for Expansion	442
Acquisition costs, building and improvements	3,097
Acquisition costs, tenant improvements	166
Acquisition costs, total	4,133
Improvements Subsequent to Purchase Date	89
Total Cost	4,222
Accumulated Depreciation and Amortization	-964
Net Invest- ments in Real Estate	3,258
Depreciation Life	39 years	[1]
Kings Mt. II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	3,381
Land	774
Acquisition costs, site improvements	1,351
Land Available for Expansion	0
Acquisition costs, building and improvements	10,199
Acquisition costs, tenant improvements	958
Acquisition costs, total	13,282
Improvements Subsequent to Purchase Date	0
Total Cost	13,282
Accumulated Depreciation and Amortization	-3,148
Net Invest- ments in Real Estate	10,134
Depreciation Life	39 years	[1]
Union Cross Bldg. I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	1,834
Land	852
Acquisition costs, site improvements	759
Land Available for Expansion	0
Acquisition costs, building and improvements	3,905
Acquisition costs, tenant improvements	27
Acquisition costs, total	5,543
Improvements Subsequent to Purchase Date	0
Total Cost	5,543
Accumulated Depreciation and Amortization	-1,120
Net Invest- ments in Real Estate	4,423
Depreciation Life	39 years	[1]
Union Cross Bldg. II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	5,587
Land	1,658
Acquisition costs, site improvements	1,576
Land Available for Expansion	0
Acquisition costs, building and improvements	12,271
Acquisition costs, tenant improvements	65
Acquisition costs, total	15,570
Improvements Subsequent to Purchase Date	483
Total Cost	16,053
Accumulated Depreciation and Amortization	-3,165
Net Invest- ments in Real Estate	12,888
Depreciation Life	39 years	[1]
Fairforest Bldg. 1
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	335
Acquisition costs, site improvements	107
Land Available for Expansion	0
Acquisition costs, building and improvements	2,509
Acquisition costs, tenant improvements	6
Acquisition costs, total	2,957
Improvements Subsequent to Purchase Date	0
Total Cost	2,957
Accumulated Depreciation and Amortization	-452
Net Invest- ments in Real Estate	2,505
Depreciation Life	39 years	[1]
Fairforest Bldg. 2
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	241
Acquisition costs, site improvements	122
Land Available for Expansion	156
Acquisition costs, building and improvements	4,654
Acquisition costs, tenant improvements	2
Acquisition costs, total	5,175
Improvements Subsequent to Purchase Date	200
Total Cost	5,375
Accumulated Depreciation and Amortization	-907
Net Invest- ments in Real Estate	4,468
Depreciation Life	39 years	[1]
Fairforest Bldg. 3
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	444
Acquisition costs, site improvements	231
Land Available for Expansion	164
Acquisition costs, building and improvements	4,695
Acquisition costs, tenant improvements	14
Acquisition costs, total	5,548
Improvements Subsequent to Purchase Date	0
Total Cost	5,548
Accumulated Depreciation and Amortization	-863
Net Invest- ments in Real Estate	4,685
Depreciation Life	39 years	[1]
Fairforest Bldg. 4
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	661
Acquisition costs, site improvements	331
Land Available for Expansion	0
Acquisition costs, building and improvements	4,566
Acquisition costs, tenant improvements	10
Acquisition costs, total	5,568
Improvements Subsequent to Purchase Date	3,003
Total Cost	8,571
Accumulated Depreciation and Amortization	-967
Net Invest- ments in Real Estate	7,604
Depreciation Life	39 years	[1]
Highway 290 Commerce Pk Bldg. 1
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	704
Acquisition costs, site improvements	219
Land Available for Expansion	0
Acquisition costs, building and improvements	4,347
Acquisition costs, tenant improvements	8
Acquisition costs, total	5,278
Improvements Subsequent to Purchase Date	722
Total Cost	6,000
Accumulated Depreciation and Amortization	-806
Net Invest- ments in Real Estate	5,194
Depreciation Life	39 years	[1]
Highway 290 Commerce Pk Bldg. 5
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	421
Acquisition costs, site improvements	162
Land Available for Expansion	0
Acquisition costs, building and improvements	800
Acquisition costs, tenant improvements	4
Acquisition costs, total	1,387
Improvements Subsequent to Purchase Date	109
Total Cost	1,496
Accumulated Depreciation and Amortization	-220
Net Invest- ments in Real Estate	1,276
Depreciation Life	39 years	[1]
Highway 290 Commerce Pk Bldg. 7
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	1,233
Acquisition costs, site improvements	510
Land Available for Expansion	0
Acquisition costs, building and improvements	2,949
Acquisition costs, tenant improvements	1
Acquisition costs, total	4,693
Improvements Subsequent to Purchase Date	381
Total Cost	5,074
Accumulated Depreciation and Amortization	-795
Net Invest- ments in Real Estate	4,279
Depreciation Life	39 years	[1]
Orchard Business Park 2
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	173
Acquisition costs, site improvements	62
Land Available for Expansion	0
Acquisition costs, building and improvements	526
Acquisition costs, tenant improvements	0
Acquisition costs, total	761
Improvements Subsequent to Purchase Date	35
Total Cost	796
Accumulated Depreciation and Amortization	-145
Net Invest- ments in Real Estate	651
Depreciation Life	39 years	[1]
Greenville/Spartanburg Ind. Pk
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	460
Acquisition costs, site improvements	200
Land Available for Expansion	0
Acquisition costs, building and improvements	2,584
Acquisition costs, tenant improvements	2
Acquisition costs, total	3,246
Improvements Subsequent to Purchase Date	240
Total Cost	3,486
Accumulated Depreciation and Amortization	-595
Net Invest- ments in Real Estate	2,891
Depreciation Life	39 years	[1]
Community Cash Complex 1
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	867
Acquisition costs, site improvements	175
Land Available for Expansion	0
Acquisition costs, building and improvements	1,622
Acquisition costs, tenant improvements	0
Acquisition costs, total	2,664
Improvements Subsequent to Purchase Date	690
Total Cost	3,354
Accumulated Depreciation and Amortization	-960
Net Invest- ments in Real Estate	2,394
Depreciation Life	39 years	[1]
Community Cash Complex 2
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	887
Acquisition costs, site improvements	136
Land Available for Expansion	0
Acquisition costs, building and improvements	1,169
Acquisition costs, tenant improvements	3
Acquisition costs, total	2,195
Improvements Subsequent to Purchase Date	0
Total Cost	2,195
Accumulated Depreciation and Amortization	0
Net Invest- ments in Real Estate	2,195
Depreciation Life	39 years	[1]
Community Cash Complex 3
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	205
Acquisition costs, site improvements	16
Land Available for Expansion	0
Acquisition costs, building and improvements	1,190
Acquisition costs, tenant improvements	22
Acquisition costs, total	1,433
Improvements Subsequent to Purchase Date	0
Total Cost	1,433
Accumulated Depreciation and Amortization	-219
Net Invest- ments in Real Estate	1,214
Depreciation Life	39 years	[1]
Community Cash Complex 4
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	132
Acquisition costs, site improvements	15
Land Available for Expansion	0
Acquisition costs, building and improvements	399
Acquisition costs, tenant improvements	0
Acquisition costs, total	546
Improvements Subsequent to Purchase Date	0
Total Cost	546
Accumulated Depreciation and Amortization	0
Net Invest- ments in Real Estate	546
Depreciation Life	39 years	[1]
Community Cash Complex 5
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	138
Acquisition costs, site improvements	15
Land Available for Expansion	0
Acquisition costs, building and improvements	671
Acquisition costs, tenant improvements	0
Acquisition costs, total	824
Improvements Subsequent to Purchase Date	0
Total Cost	824
Accumulated Depreciation and Amortization	0
Net Invest- ments in Real Estate	824
Depreciation Life	39 years	[1]
Highway 290 Commerce Pk Bldg. 2
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	969
Acquisition costs, site improvements	363
Land Available for Expansion	162
Acquisition costs, building and improvements	3,008
Acquisition costs, tenant improvements	24
Acquisition costs, total	4,526
Improvements Subsequent to Purchase Date	0
Total Cost	4,526
Accumulated Depreciation and Amortization	-653
Net Invest- ments in Real Estate	3,873
Depreciation Life	39 years	[1]
Highway 290 Commerce Pk Bldg. 6
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	498
Acquisition costs, site improvements	176
Land Available for Expansion	74
Acquisition costs, building and improvements	3,012
Acquisition costs, tenant improvements	0
Acquisition costs, total	3,760
Improvements Subsequent to Purchase Date	554
Total Cost	4,314
Accumulated Depreciation and Amortization	-647
Net Invest- ments in Real Estate	3,667
Depreciation Life	39 years	[1]
Lakeside Office Center
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	8,617
Land	4,328
Acquisition costs, site improvements	817
Land Available for Expansion	0
Acquisition costs, building and improvements	10,497
Acquisition costs, tenant improvements	1,140
Acquisition costs, total	16,782
Improvements Subsequent to Purchase Date	626
Total Cost	17,408
Accumulated Depreciation and Amortization	-3,413
Net Invest- ments in Real Estate	13,995
Depreciation Life	39 years	[1]
Kings Mt. III
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	674
Acquisition costs, site improvements	1,647
Land Available for Expansion	509
Acquisition costs, building and improvements	13,738
Acquisition costs, tenant improvements	0
Acquisition costs, total	16,568
Improvements Subsequent to Purchase Date	4,853
Total Cost	21,421
Accumulated Depreciation and Amortization	-4,209
Net Invest- ments in Real Estate	17,212
Depreciation Life	39 years	[1]
Enclave on the Lake
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	4,056
Acquisition costs, site improvements	10,230
Land Available for Expansion	0
Acquisition costs, building and improvements	20,823
Acquisition costs, tenant improvements	1,197
Acquisition costs, total	36,306
Improvements Subsequent to Purchase Date	2,162
Total Cost	38,468
Accumulated Depreciation and Amortization	-7,869
Net Invest- ments in Real Estate	30,599
Depreciation Life	39 years	[1]
Avion III & IV
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	6,810
Acquisition costs, site improvements	1,179
Land Available for Expansion	0
Acquisition costs, building and improvements	30,004
Acquisition costs, tenant improvements	1,105
Acquisition costs, total	39,098
Improvements Subsequent to Purchase Date	201
Total Cost	39,299
Accumulated Depreciation and Amortization	-6,380
Net Invest- ments in Real Estate	32,919
Depreciation Life	39 years	[1]
13201 Wilfred Lane
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	2,274
Acquisition costs, site improvements	412
Land Available for Expansion	0
Acquisition costs, building and improvements	11,049
Acquisition costs, tenant improvements	129
Acquisition costs, total	13,864
Improvements Subsequent to Purchase Date	0
Total Cost	13,864
Accumulated Depreciation and Amortization	-1,788
Net Invest- ments in Real Estate	12,076
Depreciation Life	39 years	[1]
3011, 3055 & 3077 Comcast Place
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	7,013
Acquisition costs, site improvements	998
Land Available for Expansion	0
Acquisition costs, building and improvements	21,858
Acquisition costs, tenant improvements	7,739
Acquisition costs, total	37,608
Improvements Subsequent to Purchase Date	0
Total Cost	37,608
Accumulated Depreciation and Amortization	-6,342
Net Invest- ments in Real Estate	31,266
Depreciation Life	39 years	[1]
140 Depot Street
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	3,560
Acquisition costs, site improvements	1,172
Land Available for Expansion	0
Acquisition costs, building and improvements	11,898
Acquisition costs, tenant improvements	158
Acquisition costs, total	16,788
Improvements Subsequent to Purchase Date	0
Total Cost	16,788
Accumulated Depreciation and Amortization	-2,162
Net Invest- ments in Real Estate	14,626
Depreciation Life	39 years	[1]
Crest Ridge Corporate Center I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	4,624
Acquisition costs, site improvements	335
Land Available for Expansion	0
Acquisition costs, building and improvements	16,024
Acquisition costs, tenant improvements	3,174
Acquisition costs, total	24,157
Improvements Subsequent to Purchase Date	28
Total Cost	24,185
Accumulated Depreciation and Amortization	-4,023
Net Invest- ments in Real Estate	20,162
Depreciation Life	39 years	[1]
West Point Trade Center
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	5,843
Acquisition costs, site improvements	2,925
Land Available for Expansion	0
Acquisition costs, building and improvements	16,067
Acquisition costs, tenant improvements	368
Acquisition costs, total	25,203
Improvements Subsequent to Purchase Date	4,849
Total Cost	30,052
Accumulated Depreciation and Amortization	-3,524
Net Invest- ments in Real Estate	26,528
Depreciation Life	39 years	[1]
5160 Hacienda Drive
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	8,100
Acquisition costs, site improvements	740
Land Available for Expansion	0
Acquisition costs, building and improvements	20,776
Acquisition costs, tenant improvements	1,693
Acquisition costs, total	31,309
Improvements Subsequent to Purchase Date	0
Total Cost	31,309
Accumulated Depreciation and Amortization	-3,510
Net Invest- ments in Real Estate	27,799
Depreciation Life	39 years	[1]
10450 Pacific Center Court
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	4,501
Acquisition costs, site improvements	724
Land Available for Expansion	499
Acquisition costs, building and improvements	20,410
Acquisition costs, tenant improvements	1,061
Acquisition costs, total	27,195
Improvements Subsequent to Purchase Date	0
Total Cost	27,195
Accumulated Depreciation and Amortization	-3,251
Net Invest- ments in Real Estate	23,944
Depreciation Life	39 years	[1]
225 Summit Avenue
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	6,443
Acquisition costs, site improvements	978
Land Available for Expansion	657
Acquisition costs, building and improvements	25,460
Acquisition costs, tenant improvements	2,240
Acquisition costs, total	35,778
Improvements Subsequent to Purchase Date	0
Total Cost	35,778
Accumulated Depreciation and Amortization	-4,203
Net Invest- ments in Real Estate	31,575
Depreciation Life	39 years	[1]
One WaySide Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	23,873
Land	7,500
Acquisition costs, site improvements	517
Land Available for Expansion	0
Acquisition costs, building and improvements	37,870
Acquisition costs, tenant improvements	2,442
Acquisition costs, total	48,329
Improvements Subsequent to Purchase Date	226
Total Cost	48,555
Accumulated Depreciation and Amortization	-5,939
Net Invest- ments in Real Estate	42,616
Depreciation Life	39 years	[1]
100 Tice Blvd.
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	39,416
Land	7,300
Acquisition costs, site improvements	1,048
Land Available for Expansion	0
Acquisition costs, building and improvements	47,114
Acquisition costs, tenant improvements	2,231
Acquisition costs, total	57,693
Improvements Subsequent to Purchase Date	0
Total Cost	57,693
Accumulated Depreciation and Amortization	-6,294
Net Invest- ments in Real Estate	51,399
Depreciation Life	39 years	[1]
Ten Parkway North
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	11,468
Land	3,500
Acquisition costs, site improvements	276
Land Available for Expansion	0
Acquisition costs, building and improvements	15,764
Acquisition costs, tenant improvements	1,368
Acquisition costs, total	20,908
Improvements Subsequent to Purchase Date	19
Total Cost	20,927
Accumulated Depreciation and Amortization	-2,340
Net Invest- ments in Real Estate	18,587
Depreciation Life	39 years	[1]
4701 Gold Spike Drive
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	9,958
Land	3,500
Acquisition costs, site improvements	384
Land Available for Expansion	0
Acquisition costs, building and improvements	14,057
Acquisition costs, tenant improvements	96
Acquisition costs, total	18,037
Improvements Subsequent to Purchase Date	0
Total Cost	18,037
Accumulated Depreciation and Amortization	-1,697
Net Invest- ments in Real Estate	16,340
Depreciation Life	39 years	[1]
1985 International Way
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	6,919
Land	2,200
Acquisition costs, site improvements	396
Land Available for Expansion	0
Acquisition costs, building and improvements	10,544
Acquisition costs, tenant improvements	33
Acquisition costs, total	13,173
Improvements Subsequent to Purchase Date	95
Total Cost	13,268
Accumulated Depreciation and Amortization	-1,272
Net Invest- ments in Real Estate	11,996
Depreciation Life	39 years	[1]
3660 Deerpark Boulevard
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	7,153
Land	2,061
Acquisition costs, site improvements	438
Land Available for Expansion	339
Acquisition costs, building and improvements	10,036
Acquisition costs, tenant improvements	67
Acquisition costs, total	12,941
Improvements Subsequent to Purchase Date	0
Total Cost	12,941
Accumulated Depreciation and Amortization	-1,261
Net Invest- ments in Real Estate	11,680
Depreciation Life	39 years	[1]
Tolleson Commerce Park II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	4,301
Land	2,200
Acquisition costs, site improvements	567
Land Available for Expansion	0
Acquisition costs, building and improvements	4,753
Acquisition costs, tenant improvements	62
Acquisition costs, total	7,582
Improvements Subsequent to Purchase Date	187
Total Cost	7,769
Accumulated Depreciation and Amortization	-826
Net Invest- ments in Real Estate	6,943
Depreciation Life	39 years	[1]
Pacific Corporate Park
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	13,928
Acquisition costs, site improvements	47,023
Land Available for Expansion	7,200
Acquisition costs, building and improvements	46,993
Acquisition costs, tenant improvements	14,810
Acquisition costs, total	129,954
Improvements Subsequent to Purchase Date	110
Total Cost	130,064
Accumulated Depreciation and Amortization	-24,458
Net Invest- ments in Real Estate	105,606
Depreciation Life	39 years	[1]
100 Kimball Drive
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	8,800
Acquisition costs, site improvements	1,270
Land Available for Expansion	0
Acquisition costs, building and improvements	39,401
Acquisition costs, tenant improvements	2,946
Acquisition costs, total	52,417
Improvements Subsequent to Purchase Date	0
Total Cost	52,417
Accumulated Depreciation and Amortization	-5,609
Net Invest- ments in Real Estate	46,808
Depreciation Life	39 years	[1]
70 Hudson Street
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	115,018
Land	55,300
Acquisition costs, site improvements	8,885
Land Available for Expansion	0
Acquisition costs, building and improvements	56,195
Acquisition costs, tenant improvements	3,470
Acquisition costs, total	123,850
Improvements Subsequent to Purchase Date	-35,918
Total Cost	87,932
Accumulated Depreciation and Amortization	0
Net Invest- ments in Real Estate	87,932
Depreciation Life	39 years	[1]
90 Hudson Street
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	104,863
Land	56,400
Acquisition costs, site improvements	9,968
Land Available for Expansion	0
Acquisition costs, building and improvements	76,909
Acquisition costs, tenant improvements	3,198
Acquisition costs, total	146,475
Improvements Subsequent to Purchase Date	946
Total Cost	147,421
Accumulated Depreciation and Amortization	-11,453
Net Invest- ments in Real Estate	135,968
Depreciation Life	39 years	[1]
Millers Ferry Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	5,835
Acquisition costs, site improvements	8,755
Land Available for Expansion	0
Acquisition costs, building and improvements	18,412
Acquisition costs, tenant improvements	688
Acquisition costs, total	33,690
Improvements Subsequent to Purchase Date	150
Total Cost	33,840
Accumulated Depreciation and Amortization	-3,969
Net Invest- ments in Real Estate	29,871
Depreciation Life	39 years	[1]
Sky Harbor Operations Center
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	0
Acquisition costs, site improvements	20,848
Land Available for Expansion	0
Acquisition costs, building and improvements	19,677
Acquisition costs, tenant improvements	4,565
Acquisition costs, total	45,090
Improvements Subsequent to Purchase Date	0
Total Cost	45,090
Accumulated Depreciation and Amortization	-7,110
Net Invest- ments in Real Estate	37,980
Depreciation Life	39 years	[1]
Atwater
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	5,818
Acquisition costs, site improvements	11,583
Land Available for Expansion	1,033
Acquisition costs, building and improvements	29,113
Acquisition costs, tenant improvements	30,719
Acquisition costs, total	78,266
Improvements Subsequent to Purchase Date	0
Total Cost	78,266
Accumulated Depreciation and Amortization	-8,157
Net Invest- ments in Real Estate	70,109
Depreciation Life	39 years	[1]
Aurora Commerce Center Bldg. C
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	2,600
Acquisition costs, site improvements	1,126
Land Available for Expansion	0
Acquisition costs, building and improvements	17,466
Acquisition costs, tenant improvements	254
Acquisition costs, total	21,446
Improvements Subsequent to Purchase Date	0
Total Cost	21,446
Accumulated Depreciation and Amortization	-1,714
Net Invest- ments in Real Estate	19,732
Depreciation Life	39 years	[1]
Sabal Pavilion
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	3,900
Acquisition costs, site improvements	1,394
Land Available for Expansion	0
Acquisition costs, building and improvements	10,734
Acquisition costs, tenant improvements	1,656
Acquisition costs, total	17,684
Improvements Subsequent to Purchase Date	251
Total Cost	17,935
Accumulated Depreciation and Amortization	-1,646
Net Invest- ments in Real Estate	16,289
Depreciation Life	39 years	[1]
2400 Dralle Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	9,975
Acquisition costs, site improvements	4,732
Land Available for Expansion	1,731
Acquisition costs, building and improvements	38,175
Acquisition costs, tenant improvements	912
Acquisition costs, total	55,525
Improvements Subsequent to Purchase Date	8
Total Cost	55,533
Accumulated Depreciation and Amortization	-3,825
Net Invest- ments in Real Estate	51,708
Depreciation Life	39 years	[1]
Midwest Commerce Center I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	4,739
Acquisition costs, site improvements	10,517
Land Available for Expansion	1,926
Acquisition costs, building and improvements	36,170
Acquisition costs, tenant improvements	597
Acquisition costs, total	53,949
Improvements Subsequent to Purchase Date	7
Total Cost	53,956
Accumulated Depreciation and Amortization	-3,983
Net Invest- ments in Real Estate	49,973
Depreciation Life	39 years	[1]
20000 S. Diamond Lake Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	6,265
Land	1,976
Acquisition costs, site improvements	884
Land Available for Expansion	0
Acquisition costs, building and improvements	12,041
Acquisition costs, tenant improvements	55
Acquisition costs, total	14,956
Improvements Subsequent to Purchase Date	0
Total Cost	14,956
Accumulated Depreciation and Amortization	-794
Net Invest- ments in Real Estate	14,162
Depreciation Life	39 years	[1]
Gateway at Riverside
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	6,940
Acquisition costs, site improvements	6,597
Land Available for Expansion	0
Acquisition costs, building and improvements	26,918
Acquisition costs, tenant improvements	475
Acquisition costs, total	40,930
Improvements Subsequent to Purchase Date	0
Total Cost	40,930
Accumulated Depreciation and Amortization	-2,450
Net Invest- ments in Real Estate	38,480
Depreciation Life	39 years	[1]
Gateway II at Riverside
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	772
Acquisition costs, site improvements	253
Land Available for Expansion	1,545
Acquisition costs, building and improvements	0
Acquisition costs, tenant improvements	0
Acquisition costs, total	2,570
Improvements Subsequent to Purchase Date	0
Total Cost	2,570
Accumulated Depreciation and Amortization	-35
Net Invest- ments in Real Estate	2,535
Depreciation Life	39 years	[1]
701 & 801 Charles Ewing Blvd
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	2,376
Acquisition costs, site improvements	3,832
Land Available for Expansion	0
Acquisition costs, building and improvements	14,306
Acquisition costs, tenant improvements	2,268
Acquisition costs, total	22,782
Improvements Subsequent to Purchase Date	190
Total Cost	22,972
Accumulated Depreciation and Amortization	-1,652
Net Invest- ments in Real Estate	21,320
Depreciation Life	39 years	[1]
Mid-Atlantic Distribution Center - Bldg A
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	7,033
Acquisition costs, site improvements	3,578
Land Available for Expansion	0
Acquisition costs, building and improvements	24,780
Acquisition costs, tenant improvements	385
Acquisition costs, total	35,776
Improvements Subsequent to Purchase Date	7
Total Cost	35,783
Accumulated Depreciation and Amortization	-1,814
Net Invest- ments in Real Estate	33,969
Depreciation Life	39 years	[1]
1400 Perimeter Park Drive
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	2,359
Land	765
Acquisition costs, site improvements	541
Land Available for Expansion	0
Acquisition costs, building and improvements	3,320
Acquisition costs, tenant improvements	332
Acquisition costs, total	4,958
Improvements Subsequent to Purchase Date	0
Total Cost	4,958
Accumulated Depreciation and Amortization	-279
Net Invest- ments in Real Estate	4,679
Depreciation Life	39 years	[1]
3900 North Paramount Parkway
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	7,786
Land	861
Acquisition costs, site improvements	525
Land Available for Expansion	0
Acquisition costs, building and improvements	12,474
Acquisition costs, tenant improvements	688
Acquisition costs, total	14,548
Improvements Subsequent to Purchase Date	0
Total Cost	14,548
Accumulated Depreciation and Amortization	-768
Net Invest- ments in Real Estate	13,780
Depreciation Life	39 years	[1]
3900 South Paramount Parkway
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	7,787
Land	1,062
Acquisition costs, site improvements	650
Land Available for Expansion	0
Acquisition costs, building and improvements	13,842
Acquisition costs, tenant improvements	552
Acquisition costs, total	16,106
Improvements Subsequent to Purchase Date	0
Total Cost	16,106
Accumulated Depreciation and Amortization	-842
Net Invest- ments in Real Estate	15,264
Depreciation Life	39 years	[1]
Point West I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	10,716
Land	3,616
Acquisition costs, site improvements	1,888
Land Available for Expansion	0
Acquisition costs, building and improvements	21,811
Acquisition costs, tenant improvements	1,339
Acquisition costs, total	28,654
Improvements Subsequent to Purchase Date	0
Total Cost	28,654
Accumulated Depreciation and Amortization	-1,911
Net Invest- ments in Real Estate	26,743
Depreciation Life	39 years	[1]
22535 Colonial Pkwy
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	8,031
Land	1,336
Acquisition costs, site improvements	992
Land Available for Expansion	0
Acquisition costs, building and improvements	12,499
Acquisition costs, tenant improvements	862
Acquisition costs, total	15,689
Improvements Subsequent to Purchase Date	1,485
Total Cost	17,174
Accumulated Depreciation and Amortization	-958
Net Invest- ments in Real Estate	16,216
Depreciation Life	39 years	[1]
Atrium I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	21,580
Land	4,131
Acquisition costs, site improvements	1,990
Land Available for Expansion	0
Acquisition costs, building and improvements	28,589
Acquisition costs, tenant improvements	3,559
Acquisition costs, total	38,269
Improvements Subsequent to Purchase Date	634
Total Cost	38,903
Accumulated Depreciation and Amortization	-2,821
Net Invest- ments in Real Estate	36,082
Depreciation Life	39 years	[1]
Easton III
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	6,280
Land	2,164
Acquisition costs, site improvements	1,591
Land Available for Expansion	0
Acquisition costs, building and improvements	11,944
Acquisition costs, tenant improvements	1,246
Acquisition costs, total	16,945
Improvements Subsequent to Purchase Date	235
Total Cost	17,180
Accumulated Depreciation and Amortization	-1,149
Net Invest- ments in Real Estate	16,031
Depreciation Life	39 years	[1]
Landings I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	16,728
Land	1,689
Acquisition costs, site improvements	1,229
Land Available for Expansion	0
Acquisition costs, building and improvements	21,824
Acquisition costs, tenant improvements	1,529
Acquisition costs, total	26,271
Improvements Subsequent to Purchase Date	0
Total Cost	26,271
Accumulated Depreciation and Amortization	-1,541
Net Invest- ments in Real Estate	24,730
Depreciation Life	39 years	[1]
Landings II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	14,740
Land	1,434
Acquisition costs, site improvements	877
Land Available for Expansion	0
Acquisition costs, building and improvements	18,637
Acquisition costs, tenant improvements	1,009
Acquisition costs, total	21,957
Improvements Subsequent to Purchase Date	1,082
Total Cost	23,039
Accumulated Depreciation and Amortization	-1,603
Net Invest- ments in Real Estate	21,436
Depreciation Life	39 years	[1]
McAuley Place
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	13,056
Land	1,467
Acquisition costs, site improvements	637
Land Available for Expansion	0
Acquisition costs, building and improvements	19,996
Acquisition costs, tenant improvements	1,901
Acquisition costs, total	24,001
Improvements Subsequent to Purchase Date	507
Total Cost	24,508
Accumulated Depreciation and Amortization	-1,628
Net Invest- ments in Real Estate	22,880
Depreciation Life	39 years	[1]
Miramar I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	9,257
Land	9,999
Acquisition costs, site improvements	2,280
Land Available for Expansion	1,573
Acquisition costs, building and improvements	3,654
Acquisition costs, tenant improvements	2,457
Acquisition costs, total	19,963
Improvements Subsequent to Purchase Date	0
Total Cost	19,963
Accumulated Depreciation and Amortization	-991
Net Invest- ments in Real Estate	18,972
Depreciation Life	39 years	[1]
Miramar II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	12,471
Land	9,841
Acquisition costs, site improvements	1,857
Land Available for Expansion	0
Acquisition costs, building and improvements	13,949
Acquisition costs, tenant improvements	2,056
Acquisition costs, total	27,703
Improvements Subsequent to Purchase Date	0
Total Cost	27,703
Accumulated Depreciation and Amortization	-2,042
Net Invest- ments in Real Estate	25,661
Depreciation Life	39 years	[1]
Northpoint III
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	10,392
Land	3,157
Acquisition costs, site improvements	1,510
Land Available for Expansion	0
Acquisition costs, building and improvements	15,081
Acquisition costs, tenant improvements	1,165
Acquisition costs, total	20,913
Improvements Subsequent to Purchase Date	0
Total Cost	20,913
Accumulated Depreciation and Amortization	-1,140
Net Invest- ments in Real Estate	19,773
Depreciation Life	39 years	[1]
Celebration Office Center
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	8,966
Land	4,892
Acquisition costs, site improvements	1,529
Land Available for Expansion	0
Acquisition costs, building and improvements	8,499
Acquisition costs, tenant improvements	657
Acquisition costs, total	15,577
Improvements Subsequent to Purchase Date	8
Total Cost	15,585
Accumulated Depreciation and Amortization	-967
Net Invest- ments in Real Estate	14,618
Depreciation Life	39 years	[1]
Goodyear Crossing II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	19,836
Land	7,471
Acquisition costs, site improvements	2,919
Land Available for Expansion	0
Acquisition costs, building and improvements	46,349
Acquisition costs, tenant improvements	492
Acquisition costs, total	57,231
Improvements Subsequent to Purchase Date	60
Total Cost	57,291
Accumulated Depreciation and Amortization	-2,673
Net Invest- ments in Real Estate	54,618
Depreciation Life	39 years	[1]
Norman Pointe I
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	22,159
Land	3,369
Acquisition costs, site improvements	1,089
Land Available for Expansion	0
Acquisition costs, building and improvements	25,906
Acquisition costs, tenant improvements	1,615
Acquisition costs, total	31,979
Improvements Subsequent to Purchase Date	384
Total Cost	32,363
Accumulated Depreciation and Amortization	-2,130
Net Invest- ments in Real Estate	30,233
Depreciation Life	39 years	[1]
Norman Pointe II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	24,681
Land	1,483
Acquisition costs, site improvements	1,123
Land Available for Expansion	0
Acquisition costs, building and improvements	36,298
Acquisition costs, tenant improvements	4,818
Acquisition costs, total	43,722
Improvements Subsequent to Purchase Date	4,166
Total Cost	47,888
Accumulated Depreciation and Amortization	-4,548
Net Invest- ments in Real Estate	43,340
Depreciation Life	39 years	[1]
Carpenter Corporate Center I & II
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	5,901
Acquisition costs, site improvements	1,160
Land Available for Expansion	0
Acquisition costs, building and improvements	31,201
Acquisition costs, tenant improvements	3,588
Acquisition costs, total	41,850
Improvements Subsequent to Purchase Date	185
Total Cost	42,035
Accumulated Depreciation and Amortization	-1,763
Net Invest- ments in Real Estate	40,272
Depreciation Life	39 years	[1]
1200 Woods Chapel Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	896
Acquisition costs, site improvements	2,373
Land Available for Expansion	664
Acquisition costs, building and improvements	4,925
Acquisition costs, tenant improvements	58
Acquisition costs, total	8,916
Improvements Subsequent to Purchase Date	0
Total Cost	8,916
Accumulated Depreciation and Amortization	-393
Net Invest- ments in Real Estate	8,523
Depreciation Life	39 years	[1]
445 Airtech Parkway
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	3,028
Acquisition costs, site improvements	2,636
Land Available for Expansion	1,070
Acquisition costs, building and improvements	19,201
Acquisition costs, tenant improvements	242
Acquisition costs, total	26,177
Improvements Subsequent to Purchase Date	0
Total Cost	26,177
Accumulated Depreciation and Amortization	-630
Net Invest- ments in Real Estate	25,547
Depreciation Life	39 years	[1]
1 Rocket Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	20,930
Land	15,486
Acquisition costs, site improvements	402
Land Available for Expansion	0
Acquisition costs, building and improvements	30,043
Acquisition costs, tenant improvements	731
Acquisition costs, total	46,662
Improvements Subsequent to Purchase Date	0
Total Cost	46,662
Accumulated Depreciation and Amortization	-437
Net Invest- ments in Real Estate	46,225
Depreciation Life	39 years	[1]
1659 Sauget Business Blvd
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	698
Acquisition costs, site improvements	817
Land Available for Expansion	0
Acquisition costs, building and improvements	17,060
Acquisition costs, tenant improvements	465
Acquisition costs, total	19,040
Improvements Subsequent to Purchase Date	0
Total Cost	19,040
Accumulated Depreciation and Amortization	-49
Net Invest- ments in Real Estate	18,991
Depreciation Life	39 years	[1]
325 Center Point Blvd
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	2,759
Acquisition costs, site improvements	3,097
Land Available for Expansion	0
Acquisition costs, building and improvements	34,352
Acquisition costs, tenant improvements	657
Acquisition costs, total	40,865
Improvements Subsequent to Purchase Date	0
Total Cost	40,865
Accumulated Depreciation and Amortization	-108
Net Invest- ments in Real Estate	40,757
Depreciation Life	39 years	[1]
550 Oak Ridge Drive
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	3,690
Acquisition costs, site improvements	4,444
Land Available for Expansion	0
Acquisition costs, building and improvements	28,538
Acquisition costs, tenant improvements	319
Acquisition costs, total	36,991
Improvements Subsequent to Purchase Date	0
Total Cost	36,991
Accumulated Depreciation and Amortization	-93
Net Invest- ments in Real Estate	36,898
Depreciation Life	39 years	[1]
125 Capital Road
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	762
Acquisition costs, site improvements	996
Land Available for Expansion	0
Acquisition costs, building and improvements	6,059
Acquisition costs, tenant improvements	39
Acquisition costs, total	7,856
Improvements Subsequent to Purchase Date	0
Total Cost	7,856
Accumulated Depreciation and Amortization	-20
Net Invest- ments in Real Estate	7,836
Depreciation Life	39 years	[1]
14-46 Alberigi Drive
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrance Net	0
Land	815
Acquisition costs, site improvements	1,629
Land Available for Expansion	0
Acquisition costs, building and improvements	6,745
Acquisition costs, tenant improvements	147
Acquisition costs, total	9,336
Improvements Subsequent to Purchase Date	0
Total Cost	9,336
Accumulated Depreciation and Amortization	-25
Net Invest- ments in Real Estate	9,311
Depreciation Life	39 years	[1]
[1]	The initial costs of buildings and improvements are depreciated over 39 years using a straight-line method of accounting; site improvements are depreciated over a range of 15 to 25 years; and improvements capitalized subsequent to acquisition are depreciated over the shorter of the lease term or useful life.

Schedule_IIIInvestment_Roll_fo

Schedule III-Investment Roll forward (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance, Beginning of the Year	$2,270,222	$1,804,885	$1,514,633
Acquisitions	186,931	52,531	230,919
Dispositions	-103,982	-27,259	-3,715
Improvements	11,910	10,056	2,688
Impairment of Real Estate	-35,918	0	0
ImprovementsbVariable Interest Entity	0	-72,742	60,360
Transfer from Joint Venture	0	502,751	0
Balance, End of the Year	$2,329,163	$2,270,222	$1,804,885

Schedule_III_Depreciation_Roll

Schedule III- Depreciation Roll Forward (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance, Beginning of the Year	($195,778,000)	($132,129,000)	($88,084,000)
Additions	-69,584,000	-65,565,000	-44,402,000
Dispositions	15,255,000	1,916,000	357,000
Impairment of Real Estate	10,134,000	0	0
Balance, End of the Year	-239,973,000	-195,778,000	-132,129,000
Aggregate gross cost of our investments in real estate for U.S. Federal income tax purposes	$2,700,000,000