Gramercy Property Trust 10-K 3 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 28, 2014	Jun. 30, 2013
Document Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'CSG	'	'
Entity Registrant Name	'CHAMBERS STREET PROPERTIES	'	'
Entity Central Index Key	'0001297587	'	'
Current Fiscal Year End Date	'--12-31	'	'
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	'	236,497,081	'
Entity Public Float	'	'	$2,358,322,893

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investments in Real Estate:	'	'
Land	$639,382	$538,229
Land Available for Expansion	24,631	22,393
Buildings and Improvements	1,606,209	1,172,318
Construction in Progress - VIE	0	76,826
Gross investments in Real Estate	2,270,222	1,809,766
Less: Accumulated Depreciation and Amortization	-195,778	-132,129
Net Investments in Real Estate	2,074,444	1,677,637
Investments in Unconsolidated Entities	514,802	515,829
Cash and Cash Equivalents	83,007	107,355
Restricted Cash	15,236	10,998
Tenant and Other Receivables, Net	10,394	6,675
Deferred Rent	35,499	25,210
Deferred Leasing Costs and Intangible Assets, Net	248,872	199,058
Deferred Financing Costs, Net	11,585	8,322
Prepaid Expenses and Other Assets	16,757	3,778
Total Assets	3,010,596	2,554,862
LIABILITIES	'	'
Secured Notes Payable, Net	681,200	502,232
Unsecured Term Loan Facilities	570,000	0
Unsecured Revolving Credit Facility	170,044	265,000
Accounts Payable, Accrued Expenses and Other Liabilities ($0 and $24,531 of VIE, respectively)	50,053	53,390
Intangible Liabilities, Net	28,070	25,994
Prepaid Rent and Security Deposits	16,648	10,005
Distributions Payable	9,931	37,418
Total Liabilities	1,525,946	894,039
COMMITMENTS AND CONTINGENCIES (NOTE 14)	'	'
NON-CONTROLLING INTERESTS	'	'
Operating Partnership Units	0	2,464
Class B Interest	0	200
Non-Controlling Interest—Variable Interest Entity	0	826
SHAREHOLDERS' EQUITY	'	'
Common Shares of Beneficial Interest, $0.01 par value, 990,000,000 shares authorized; 236,463,981 and 249,664,156 issued and outstanding as of December 31, 2013 and December 31, 2012, respectively	2,359	2,494
Additional Paid-in-Capital	2,067,008	2,203,888
Accumulated Deficit	-589,313	-540,462
Accumulated Other Comprehensive Income (Loss)	4,596	-8,587
Total Shareholders' Equity	1,484,650	1,657,333
Total Liabilities, Non–Controlling Interests and Shareholders' Equity	$3,010,596	$2,554,862

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Common shares, par value (usd per share)	$0.01	$0.01
Common Shares of Beneficial Interest, shares authorized (shares)	990,000,000	990,000,000
Common Shares of Beneficial Interest, issued	236,463,981	249,664,156
Common Shares of Beneficial Interest, outstanding	236,463,981	249,664,156
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities	$0	$24,531

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
REVENUES	'	'	'
Rental	$196,706	$145,432	$119,081
Tenant Reimbursements	53,306	33,411	26,735
Total Revenues	250,012	178,843	145,816
EXPENSES	'	'	'
Property Operating	31,221	21,464	19,191
Real Estate Taxes	37,971	22,636	17,650
General and Administrative	23,138	14,660	5,132
Investment Management Fee	489	29,695	20,908
Acquisition-Related	2,690	7,752	14,464
Depreciation and Amortization	102,793	72,383	60,353
Transition and Listing	12,681	8,249	0
Total Expenses	210,983	176,839	137,698
OTHER INCOME AND EXPENSES	'	'	'
Interest and Other Income	1,321	2,235	1,607
Interest Expense	-47,295	-33,845	-33,261
Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	614	-118	-303
Loss on Early Extinguishment of Debt	-1,051	-17,284	-108
Gain on Conversion of Equity Interest to Controlling Interest	75,763	0	0
Total Other Income (Expenses)	29,352	-49,012	-32,065
Income (Loss) Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	68,381	-47,008	-23,947
Provision For Income Taxes	-287	-266	-456
Equity in Income of Unconsolidated Entities	12,111	3,959	3,590
NET INCOME (LOSS) FROM CONTINUING OPERATIONS	80,205	-43,315	-20,813
DISCONTINUED OPERATIONS	'	'	'
Income from Discontinued Operations	382	720	1,227
Gain (Loss) on Sale of Real Estate	2,759	-413	301
Income From Discontinued Operations	3,141	307	1,528
NET INCOME (LOSS)	83,346	-43,008	-19,285
Net (Income) Loss Attributable to Non-Controlling Operating Partnership Units	-82	32	26
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	$83,264	($42,976)	($19,259)
Basic and Diluted Net Income (Loss) Per Share from Continuing Operations Attributable to Common Shareholders (in usd per share)	$0.33	($0.17)	($0.11)
Basic and Diluted Net Income (Loss) Per Share Attributable to Common Shareholders (in usd per share)	$0.34	($0.17)	($0.10)
Weighted Average Common Shares Outstanding-Basic and Diluted	242,379,680	248,154,277	192,042,918

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
NET INCOME (LOSS)	$83,346	($43,008)	($19,285)
Foreign Currency Translation Gain (Loss)	7,834	4,415	-820
Swap Fair Value Adjustments	5,349	10,662	-11,169
COMPREHENSIVE INCOME (LOSS)	96,529	-27,931	-31,274
Comprehensive (Income) Loss Attributable to Non-Controlling Operating Partnership Units	-85	17	37
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS	$96,444	($27,914)	($31,237)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	USD ($)	USD ($)	USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES	'	'	'
Net Income (Loss)	$83,346	($43,008)	($19,285)
Adjustments to Reconcile Net Income (Loss) to Net Cash Flows Provided by Operating Activities:	'	'	'
Equity in Income of Unconsolidated Entities	-12,111	-3,959	-3,590
Distributions from Unconsolidated Entities	40,710	40,005	23,666
Gain on Interest Rate Swaps	-1,772	-564	-397
Loss on Early Extinguishment of Debt	1,147	2,961	79
(Gain) Loss on Sale of Real Estate	-2,759	413	-301
Unrealized Gain on Conversion of Equity Investment to Controlling Interest	-75,763	0	0
Depreciation and Amortization	103,400	73,653	61,415
Amortization of Non-Cash Interest Expense	-367	862	1,230
Amortization of Above and Below Market Leases	6,402	2,485	2,131
Share-Based Compensation	5,713	445	28
Straight-Line Rent Adjustment	-10,269	-7,491	-9,114
Changes in Assets and Liabilities:	'	'	'
Tenant and Other Receivables	-3,737	-1,639	641
Prepaid Expenses and Other Assets	-5,935	-3,080	-1,969
Accounts Payable, Accrued Expenses and Other Liabilities	4,657	32,481	4,221
Net Cash Flows Provided By Operating Activities	132,662	93,564	58,755
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'
Acquisition of Real Property	-115,377	-266,491	-192,899
Proceeds from Sales of Real Estate	30,541	2,885	23,596
Investments in Unconsolidated Entities	-210,745	-45,568	-141,632
Distributions from Unconsolidated Entities	50,908	32,468	0
Acquisition Deposit	-2,750	0	0
Restricted Cash	-2,664	-2,431	-7,854
Lease Commissions	-993	-1,834	-2,347
Improvements to Variable Interest Entity	-11,254	-55,998	-2,230
Improvements to Investments in Real Estate	-9,332	-2,743	-9,800
Net Cash Flows Used in Investing Activities	-271,666	-339,712	-333,166
CASH FLOWS FROM FINANCING ACTIVITIES	'	'	'
Net Proceeds from Common Shares—Public Offering	0	150,814	586,950
Redemption of Common Shares	-47,429	-52,912	-39,240
Repurchase and Cancellation of Common Shares	-125,000	0	0
Repurchase and Cancellation of Vested Shares	-1,585	0	0
Payment of Distributions	-126,021	-78,830	-60,203
Distribution to Non-Controlling Interest Operating—Partnership Units	-111	-148	-148
Redemption of Class A - Operating Partnership Units	-2,279	0	0
(Acquisition of)/Contribution from Non-Controlling Interest—Variable Interest Entity	-3,474	140	686
Borrowings on Unsecured Revolving Credit Facility	454,087	265,000	50,000
Principal Payments on Unsecured Revolving Credit Facility	-549,043	-25,000	-85,000
Proceeds from Secured Notes Payable	6,388	0	0
Proceeds from Unsecured Term Loan Facilities	570,000	0	81,700
Principal Payments on Secured Notes Payable	-53,823	-137,272	-67,730
Payment of Financing Costs	-7,015	-6,420	-2,501
Net Cash Flows Provided by Financing Activities	114,695	115,372	464,514
EFFECT OF FOREIGN CURRENCY TRANSLATION	-39	-146	-44
Net (Decrease) Increase in Cash and Cash Equivalents	-24,348	-130,922	190,059
Cash and Cash Equivalents, Beginning of Year	107,355	238,277	48,218
Cash and Cash Equivalents, End of Year	83,007	107,355	238,277
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION	'	'	'
Cash Paid During the Period for Interest	46,085	33,056	31,911
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES	'	'	'
Distributions Declared and Payable	9,931	37,418	32,785
Proceeds from Dividend Reinvestment Program	33,580	65,421	46,193
Application of Deposit to Investment in Unconsolidated Entity	0	0	7,500
Application of Deposit to Purchase Price of Real Estate	0	0	12,505
Accrued Acquisition Costs Related to Real Property	0	0	383
Duke JV Contribution/Distribution—Amazon Expansion	19	697	25,364
Notes Payable Assumed on Acquisitions of Real Estate	216,011	0	253,119
Conversion of Duke JV Equity Investment to Controlling Interest	139,558	0	0
Accounts Payable and Accrued Expenses—Construction In Progress	727	3,264	3,305
Accrued Offering Costs	$0	$0	$2,107

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Equity (USD $)	Total	Common Shares	Additional Paid-in- Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2010	$1,222,302	$1,645	$1,446,559	($214,216)	($11,686)
Balance, Shares at Dec. 31, 2010	'	164,511,253	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net Income Attributable to Common Shareholders	-19,259	0	0	-19,259	0
Other Comprehensive Income	-11,978	0	0	0	-11,978
Net Contributions From DRIP of Common Shares, $0.01 Par Value, Shares	'	70,704,939	'	'	'
Net Contributions From DRIP of Common Shares, $0.01 Par Value	704,069	707	703,362	0	0
Share Based Compensation, Shares	'	3,000	'	'	'
Share-Based Compensation	28	0	28	0	0
Costs Associated with Public Offering	-72,001	0	-72,001	0	0
Redemption of Common Shares, Shares	'	-4,263,559	'	'	'
Redemption of Common Shares	-39,240	-43	-39,197	0	0
Adjustment to Record Non-Controlling Interest at Redemption Value	-185	0	-185	0	0
Distributions	-115,127	0	0	-115,127	0
Balance at Dec. 31, 2011	1,668,609	2,309	2,038,566	-348,602	-23,664
Balance, Shares at Dec. 31, 2011	'	230,955,633	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net Income Attributable to Common Shareholders	-42,976	0	0	-42,976	0
Other Comprehensive Income	15,077	0	0	0	15,077
Net Contributions From DRIP of Common Shares, $0.01 Par Value, Shares	'	24,057,013	'	'	'
Net Contributions From DRIP of Common Shares, $0.01 Par Value	236,679	241	236,438	0	0
Share Based Compensation, Shares	'	300,000	'	'	'
Share-Based Compensation	245	0	245	0	0
Costs Associated with Public Offering	-18,337	0	-18,337	0	0
Redemption of Common Shares, Shares	'	-5,648,490	'	'	'
Redemption of Common Shares	-52,912	-56	-52,856	0	0
Adjustment to Record Non-Controlling Interest at Redemption Value	-168	0	-168	0	0
Distributions	-148,884	0	0	-148,884	0
Balance at Dec. 31, 2012	1,657,333	2,494	2,203,888	-540,462	-8,587
Balance, Shares at Dec. 31, 2012	249,664,156	249,664,156	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net Income Attributable to Common Shareholders	83,264	0	0	83,264	0
Other Comprehensive Income	13,183	0	0	0	13,183
Net Contributions From DRIP of Common Shares, $0.01 Par Value, Shares	'	3,534,649	'	'	'
Net Contributions From DRIP of Common Shares, $0.01 Par Value	33,580	36	33,544	0	0
Share Based Compensation, Shares	'	816,426	'	'	'
Share-Based Compensation	5,913	5	5,908	0	0
Redemption of Common Shares, Shares	'	-4,996,935	'	'	'
Redemption of Common Shares	-47,429	-50	-47,379	0	0
Adjustment to Record Non-Controlling Interest at Redemption Value	154	0	154	0	0
Distributions	-132,115	0	0	-132,115	0
Repurchase and Cancellation of Vested Shares, Shares	'	-178,078	'	'	'
Repurchase and Cancellation of Vested Shares	-1,585	-2	-1,583	0	0
Distribution to Non-Controlling Interest	-2,648	0	-2,648	0	0
Repurchase and Cancellation of Common Shares, Shares	'	-12,376,237	'	'	'
Repurchase and Cancellation of Common Shares	-125,000	-124	-124,876	0	0
Balance at Dec. 31, 2013	$1,484,650	$2,359	$2,067,008	($589,313)	$4,596
Balance, Shares at Dec. 31, 2013	236,463,981	236,463,981	'	'	'

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Common shares, par value (usd per share)	$0.01	$0.01	$0.01
Distributions declared per common share (usd per share)	$0.55	$0.60	$0.60

Organization_and_Nature_of_Bus

Organization and Nature of Business	12 Months Ended
	Dec. 31, 2013
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 ("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 substantially all of the properties acquired on our behalf. 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. On August 19, 2013, we redeemed for cash 246,361 Class A limited partnership units, representing approximately a 0.10% ownership of the total limited partnership units, which were owned by CBRE REIT Holdings, LLC ("REIT Holdings"), an affiliate of CBRE Advisors LLC (the "former investment advisor"). On November 26, 2013, we redeemed the Class B limited partnership interest owned by REIT Holdings ("Class B Interest"). As a result, as of December 31, 2013, we owned 100% of the limited partnership units of CSP OP directly or indirectly through a wholly-owned taxable REIT subsidiary ("TRS").
	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, 2013, we had 236,463,981 common shares issued and outstanding.
	As of December 31, 2013, we owned, on a consolidated basis, 99 industrial (primarily warehouse/distribution), office and retail properties located in 18 U.S. states (Arizona, California, Colorado, Florida, Georgia, Illinois, Kansas, Kentucky, Maryland, Massachusetts, Minnesota, New Jersey, North Carolina, Ohio, Pennsylvania, South Carolina, Texas and Virginia) and in the United Kingdom, encompassing approximately 22.5 million net rentable square feet. Our consolidated properties were approximately 95.0% leased (based upon rentable square feet) (unaudited) as of December 31, 2013. As of December 31, 2013, 74 of our consolidated properties were net leased to single tenants, which encompassed approximately 18.1 million rentable square feet (unaudited).
	We had ownership interests in four unconsolidated entities that, as of December 31, 2013, owned interests in 33 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, 30 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 12.8 million rentable square feet (unaudited). Our unconsolidated properties were approximately 99.1% leased (based upon rentable square feet) (unaudited) as of December 31, 2013. As of December 31, 2013, 20 of our unconsolidated properties were net leased to single tenants, which encompassed approximately 11.3 million rentable square feet (unaudited).

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
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 generally accepted accounting principles ("U.S. 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 significant intercompany accounts and transactions are eliminated in consolidation.
	Use of Estimates
	The preparation of financial statements, in conformity with U.S. 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 Variable Interest Entity ("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 13 "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 three reportable segments, a Domestic Industrial segment, a Domestic Office segment and an International Office/Retail segment, 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, 2013 and 2012, 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, 2013 and 2012, our restricted cash balance was $15.2 million and $11.0 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
	In a period in which a property 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 property 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 asset;
	•	the asset is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets;
	•	an active program to locate a buyer and other actions required to complete the plan to sell the asset has been initiated;
	•	the sale of the asset is probable and the transfer of the asset is expected to qualify for recognition as a completed sale within one year;
	•	the asset 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 asset, 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 is 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 and 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. 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.
	No impairments of long-lived assets were recognized during the years ended December 31, 2013, 2012 and 2011.
	Prepaid Expenses and Other Assets
	Prepaid expenses and other assets consisted of the following as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013		2012
	Prepaid insurance and real estate taxes	$	2,699	$	2,014
	Tenant lease inducement, net	3,274		—
	Acquisition deposit	2,750		—
	Asset derivatives	5,211		—
	Other	2,823		1,764
	Total	$	16,757	$	3,778
	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 $14.5 million and $17.8 million as security for such leases at December 31, 2013 and 2012, 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.
	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 $24,000 and $11,000 as of December 31, 2013 and 2012, 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 rent receivables in 2011.
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 $1.6573 and $1.6242 at December 31, 2013 and 2012, respectively. The profit and loss weighted average exchange rate of the USD to the GBP was approximately $1.5628, $1.5865 and $1.6089 for the years ended December 31, 2013, 2012 and 2011, 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 $1.3753 and $1.3189 at December 31, 2013 and 2012. The profit and loss weighted average exchange rate of the USD to the EUR was approximately $1.3248, $1.2877 and $1.4000 for the years ended December 31, 2013, 2012 and 2011, 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 included legal and consulting costs resulting from the amendment of our management structure and various corporate relationships, including with respect to our relations with the former investment advisor, exploring and implementing strategic alternatives for information technology, office space and personnel needs, among other expenses. 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 our 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 our 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. Even if we qualify for taxation as a REIT, we may be subject to certain state and local taxes on our income and property and to U.S. federal income and excise taxes on our undistributed taxable income, if any.
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 did not have a liability for any unrecognized benefits as of December 31, 2013. The tax years from 2008 through 2012 remain open to examination by the taxing jurisdictions to which the company is subject.
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 $0.3 million, $0.3 million and 0.5 million during the years ended December 31, 2013, 2012 and 2011, respectively. The United Kingdom taxes real property operating results at a statutory rate of 20%. The United Kingdom taxable losses to date have generated a deferred tax asset of approximately $0.5 million consisting of these net operating loss carryforwards. We have provided for a full valuation allowance of $0.5 million as of December 31, 2013 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.
During 2010, we made taxable REIT subsidiary elections for two held for sale property subsidiaries. The elections, effective for the tax year beginning January 1, 2010 and future years, were made pursuant to section 856(i) of the Internal Revenue Code. In the third quarter of 2011 both properties were sold and the TRS's were subsequently liquidated. The taxable income for the TRS's for the year ended December 31, 2011 was $345,000 and accordingly, we recorded a provision for income taxes of $122,000. No amounts related to the TRSs were recorded in 2012 and 2013.
ASC 740 requires that entities taxed as corporations recognize 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. Since the Company has liquidated its TRS and believes it has satisfied all requisite REIT compliance tests, no amount of deferred tax asset or liability has been recorded as of December 31, 2013, other than as mentioned above regarding United Kingdom tax liabilities.
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, 2013, 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, accounts 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.
Reclassifications
To better present our consolidated balance sheets and consolidated statements of operations we have chosen to combine certain line items together instead of disclosing them as separate line items.
In addition, we have reclassified certain amounts in our previously issued balance sheets and statements of operations to conform to current period presentations. On our balance sheet as of December 31, 2012, we have reclassified $8.2 million related to prepaid rents from "Accounts Payable, Accrued Expenses and Other Liabilities" to "Prepaid Rent and Security Deposits", which represents a newly created line item.
We have reclassified amounts related to property management general and administrative expense for the years ended December 31, 2012 and 2011 of $1.2 million and $1.0 million , respectively, from "General and Administrative" expense to "Property Operating" expense, which represents a newly created line item.
None of the reclassifications reflect corrections of any amounts.
New Accounting Standards
In January 2013, the FASB issued ASU 2013-1, Clarifying the Scope of Disclosures About Offsetting Assets and Liabilities, which clarifies which instruments and transactions are subject to the offsetting disclosure requirements established by ASU 2011-11. The ASU clarifies that the scope applied to derivatives accounted for in accordance with the Derivatives and Hedging topic of the Codification, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with the Offsetting Presentation section of the Balance Sheet topic or the Presentation section of the Derivatives and Hedging topic or subject to an enforceable master netting arrangement or similar agreement.
In February 2013, the FASB issued ASU No. 2013-2, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-2"). This update requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income.
The ASU amendment and the subsequent clarification of the amendment are effective for periods beginning on or after January 1, 2013, and must be shown for all periods shown on the balance sheet. The adoption of these ASU amendments did not have a material effect on our financial condition, results of operations, or disclosures.
In July 2013, the FASB issued ASU No. 2013-10, Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes (Topic 815), which permits for the inclusion of the Fed Funds Effective Swap Rate (OIS) as a U.S. benchmark interest rate for hedge accounting purposes, in addition to interest rates on direct Treasury obligations of the U.S. government (UST), and the London Interbank Offered Rate (LIBOR). The ASU amendments also remove the restriction on using different benchmark interest rates for similar hedges. ASU No. 2013-10 is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The adoption of this ASU did not have a material effect on our financial condition, results of operations, or disclosures.

Investment_in_Real_Estate_Acti

Investment in Real Estate Activity	12 Months Ended
	Dec. 31, 2013
Real Estate [Abstract]	'
Investment in Real Estate Activity	'
	Investment in Real Estate Activity
	Wholly-Owned Property Acquisitions
	During the years ended December 31, 2013 and 2012, we acquired six industrial properties and two office properties. The 2012 property acquisitions were funded with proceeds from the follow-on offering and the 2013 acquisitions were funded with proceeds from our unsecured revolving credit facility:
	Property		Market				Date of		Purchase				Net			% Leased at 12/31/13
							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
	Property		Market				Date of		Purchase				Net			% Leased at 12/31/13
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)				Property Type
	2400 Dralle Road		Chicago		IL		3/20/12		$	64,250			1,350,000			100%	Industrial
	Midwest Commerce Center I		Kansas City		KS		8/16/12		62,950				1,107,000			100%	Industrial
	20000 S. Diamond Lake Road		Minneapolis		MN		11/7/12		18,500				280,577			100%	Industrial
	Gateway at Riverside		Baltimore		MD		11/30/12		49,229				800,797			100%	Industrial
	701 & 801 Charles Ewing Blvd		Princeton		NJ		12/28/12		28,310				110,765			100%	Office
	Mid-Atlantic Distribution Center - Bldg A		Baltimore		MD		12/28/12		43,150				672,000			100%	Industrial
	Total 2012 Wholly-Owned Property Acquisitions								$	266,389			4,321,139
	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):
		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
	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, 2012 (in thousands):
		2400				Midwest				20000 S.				Gateway			701 & 702		Mid-Atlantic		Total
		Dralle				Commerce				Diamond				at			Charles		Distribution
		Road				Center I				Lake Rd				Riverside			Ewing Bldg		Center-Bldg. A
	Land	$	16,438			$	17,182			$	2,860			$	16,108		$	6,208	$	10,611	$	69,407
	Building and Tenant Improvements	39,087				36,767				12,096				27,393			16,574		25,165		157,082
	Acquired In-Place Lease Value (1)	6,645				7,172				2,622				6,001			5,117		4,811		32,368
	Above Market Lease Value (1)	2,080				1,829				922				293			411		2,563		8,098
	Total Acquired Assets	64,250				62,950				18,500				49,795			28,310		43,150		266,955
	Below Market Lease Value (2)	—				—				—				(566		)	—		—		(566		)
	Net Assets Acquired	$	64,250			$	62,950			$	18,500			$	49,229		$	28,310	$	43,150	$	266,389
	__________
	-1	Represents in-place leases with a weighted average amortization period of 5.82 years and above-market leases with a weighted average amortization period of 4.92 years.
	-2	Represents below-market leases with a weighted average amortization period of 10.33 years.
	The following table summarizes the combined results from operations for the 2012 wholly-owned property acquisitions from their respective dates of acquisition through December 31, 2012 (in thousands):
	Revenues	$	6,557
	Net Income	$	3,363
	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 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
	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.
Pro Forma Information (unaudited)
These unaudited pro forma results have been prepared for comparative purposes only and include certain adjustments, such as increased depreciation and amortization expenses as a result of tangible and intangible assets acquired in the acquisitions. 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, 2012 and may not be indicative of future operating results.
Unaudited pro forma results, assuming the acquisitions of the Carpenter Corporate Center I & II and 1200 Woods Chapel Road properties and the remaining 20% equity interest in the Duke Portfolio ("2013 Acquisitions") had occurred as of January 1, 2012, are presented below. 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 (in thousands, except share data):
	Year Ended December 31,
	2013				2012
Revenues from Continuing Operations	$	263,566			$	246,050
Net Operating Income from Continuing Operations	46,337				18,384
Net Income	11,416				38,602
Basic and Diluted Net Income per Share	$	0.05			$	0.16
Weighted Average Common Shares Outstanding - Basic and Diluted	242,379,680				248,154,277
Unaudited pro forma results, assuming the 2013 Acquisitions had occurred as of January 1, 2012 and the 2012 Acquisitions had occurred as of January 1, 2011, are presented below. Non-recurring acquisition costs totaling $2.7 million are included in the year ended December 31, 2012 as an operating expense. Non-recurring acquisition costs totaling $7.8 million are excluded from the 2012 pro forma results and are included in the year ended December 31, 2011 as an operating expense (in thousands, except share data):
	Year Ended December 31,
	2012				2011
Revenues from Continuing Operations	$	259,367			$	180,316
Net Operating Income from Continuing Operations	23,092				24,260
Net Income	43,480				1,982
Basic and Diluted Net Income per Share	$	0.17			$	0.01
Weighted Average Common Shares Outstanding - Basic and Diluted	248,154,277				192,042,918
Discontinued Operations
The following table summarizes properties sold during the years ended December 31, 2013, 2012 and 2011 (in thousands):
Property		Market				Date of Disposition		Gross Sales
								Price
2011 Dispositions
Orchard Park I		Spartanburg		SC		4/5/11		$	1,275
Rickenbacker II and Rickenbacker III		Groveport		OH		8/12/11		22,639
								$	23,914
2012 Dispositions
Cherokee Corporate Park (1)		Spartanburg		SC		7/9/12		$	3,125
2013 Dispositions
Albion Mills Retail Park		Wakefield		United Kingdom		11/29/13		$	17,253
Summit Distribution Center		Salt Lake City		UT		12/20/13		13,800
								$	31,053
__________
-1	The Company recognized a loss from discontinued operations 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 that comprise discontinued operations for the years ended December 31, 2013, 2012 and 2011 (in thousands):
	Year Ended December 31,
	2013				2012				2011
Revenues:
Rental	$	1,755			$	2,311			$	3,256
Tenant Reimbursements	275				372				569
Total Revenues	2,030				2,683				3,825
Expenses:
Property Operating	248				338				552
Real Estate Taxes	197				133				279
Investment Management Fee	—				—				96
Depreciation and Amortization	607				1,270				1,062
Total Expenses	1,052				1,741				1,989
Interest and Other (Expense) Income	(80		)		283				(12		)
Interest Expense	(420		)		(505		)		(474		)
Loss on Early Extinguishment of Debt	(96		)		—				—
Provision for Income Taxes	—				—				(123		)
Total Other Expenses	(596		)		(222		)		(609		)
Income from Discontinued Operations	382				720				1,227
Gain (Loss) from Sale of Real Estate	2,759				(413		)		301
Total Income from Discontinued Operations	$	3,141			$	307			$	1,528

Investments_in_Unconsolidated_

Investments in Unconsolidated Entities	12 Months Ended
	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Investments in Unconsolidated Entities	'
	Investments in Unconsolidated Entities
	As of December 31, 2013 and 2012, we owned the following number of properties through unconsolidated entities:
				Number of Properties
				December 31,
		Ownership %		2013		2012
	Duke JV	80.00%		18		37
	European JV	80.00%		9		6
	UK JV	80.00%		3		3
	Afton Ridge	90.00%		—		1
	CBRE Strategic Partners Asia	5.07%		3		7
				33		54
	Investments in unconsolidated entities at December 31, 2013 and 2012 consist of the following (in thousands):
		December 31,
		2013			2012
	Duke JV	$	292,548		$	344,511
	European JV	174,272			108,725
	UK JV	36,794			37,487
	Afton Ridge(1)	1,512			17,008
	CBRE Strategic Partners Asia	9,676			8,098
		$	514,802		$	515,829
	__________
	-1	Amount represents cash and an escrow holdback at the joint venture.
	The following is a summary of the investments in unconsolidated entities for the years ended December 31, 2013 and 2012 (in thousands):
		December 31,
		2013			2012
	Investment Balance, January 1,	$	515,829		$	537,631
	Contributions	210,745			45,568
	Company's Equity in Net Income (including adjustments for basis differences)	12,111			3,959
	Other Comprehensive Income of Unconsolidated Entities	7,293			1,144
	Conversion of Duke JV Equity Investment to Controlling Interest	(139,558		)	—
	Distributions	(91,618		)	(72,473		)
	Investment Balance, December 31,	$	514,802		$	515,829
	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.
	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.
	On January 16, 2014, the Duke JV sold an office property located in Chicago, Illinois for approximately $13.1 million. See Note 19, Subsequent Events, for additional information.
	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.
	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.
	Consolidated Balance Sheet of European JV as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013			2012
	Assets
	Investments in Real Estate	$	343,642		$	208,786
	Other Assets	35,872			23,036
	Total Assets	$	379,514		$	231,822
	Liabilities and Equity
	Secured Notes Payable, net	$	153,651		$	82,894
	Other Liabilities	8,023			13,022
	Total Liabilities	161,674			95,916
	CSP Equity	174,272			108,725
	Other Investors' Equity	43,568			27,181
Total Liabilities and Equity	$	379,514		$	231,822
Consolidated Statements of Operations of European JV for the years ended December 31, 2013, 2012 and 2011 (in thousands):
	Year Ended December 31,
	2013			2012			2011
Total Revenue	$	19,581		$	11,947		$	6,430
Operating Expenses	3,631			1,824			2,042
Net Operating Income	15,950			10,123			4,388
Acquisition and Related Expense	4,778			39			—
Depreciation and Amortization	7,636			5,388			3,103
Interest Expense	2,400			462			—
Net Income from Continuing Operations	1,136			4,234			1,285
Income from Discontinued Operations	—			—			—
Gain (Loss) from Sales of Real Estate	—			—			—
Net Income	1,136			4,234			1,285
Company Share in Net Income	909			3,387			1,029
Adjustments for REIT basis	—			—			—
CSP Equity in Net Income	$	909		$	3,387		$	1,029
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 CB Richard Ellis Group Strategic Partners Asia II-A, L.P., or CBRE Strategic Partners Asia. As of December 31, 2013, 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 $111,000, $144,000 and $204,000, for the years ended December 31, 2013, 2012 and 2011, 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, 2012 and 2011.
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.
The combined balance sheets of our investments in unconsolidated entities as of December 31, 2013 and 2012 are as follows (in thousands):
	December 31,
	2013			2012
Assets
Investments in Real Estate (1)	$	990,830		$	1,240,196
Other Assets	103,671			231,173
Total Assets	$	1,094,501		$	1,471,369
Liabilities and Equity
Secured Notes Payable, net	$	233,412		$	620,457
Other Liabilities	36,224			56,312
Total Liabilities	269,636			676,769
CSP Equity	514,802			515,829
Other Investors' Equity	310,063			278,771
Total Liabilities and Equity	$	1,094,501		$	1,471,369
__________
-1	2013 amounts include 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. 2012 amounts include REIT Basis Adjustments for costs incurred by the Company outside of both the Duke JV and the Afton Ridge joint ventures.
The combined statements of operations for our investments in unconsolidated entities for the years ended December 31, 2013, 2012 and 2011 are as follows (in thousands):
	Year Ended December 31,
	2013			2012			2011
Total Revenue	$	131,166		$	153,131		$	128,908
Operating Expenses	29,917			50,204			72,112
Net Operating Income	101,249			102,927			56,796
Acquisition and Related Expense	4,778			686			—
Depreciation and Amortization	41,457			68,714			57,303
Interest Expense	13,673			26,516			22,927
Net Income (Loss) from Continuing Operations	41,341			7,011			(23,434		)
Income from Discontinued Operations	(841		)	—			—
Gain (Loss) from Sales of Real Estate	3,628			—			—
Net Income (Loss)	44,128			7,011			(23,434		)
Company Share in Net Income	12,228			4,088			3,726
Adjustments for REIT basis	(117		)	(129		)	(136		)
CSP Equity in Net Income	$	12,111		$	3,959		$	3,590

Deferred_Leasing_Costs_and_Int

Deferred Leasing Costs and Intangible Assets and Liabilities	12 Months Ended
	Dec. 31, 2013
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 and acquired in-place leases and intangible liabilities, including acquired below-market leases and acquired above-market ground lease obligations (in thousands):
		December 31,
		2013			2012
	Deferred Leasing Costs and Intangible Assets, Net:
	Deferred Leasing Costs	$	11,243		$	6,350
	Accumulated Amortization	(3,016		)	(1,705		)
	Deferred Leasing Costs, Net	8,227			4,645
	Above-Market Leases	77,180			55,219
	Accumulated Amortization	(33,577		)	(23,364		)
	Above-Market Leases, Net	43,603			31,855
	In-Place Leases	321,776			252,501
	Accumulated Amortization	(124,734		)	(89,943		)
	In-Place Leases, Net	197,042			162,558
	Total Deferred Leasing Costs and Intangible Assets, Net	$	248,872		$	199,058
	Intangible Liabilities, Net:
	Below-Market Leases	$	49,751		$	43,659
	Accumulated Amortization	(23,022		)	(19,077		)
	Below-Market Leases, Net	26,729			24,582
	Above-Market Ground Lease Obligation	1,501			1,501
	Accumulated Amortization	(160		)	(89		)
	Above-Market Ground Lease Obligation, Net	1,341			1,412
	Total Intangible Liabilities, Net	$	28,070		$	25,994
	The following table sets forth amortization related to intangible assets and liabilities for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013			2012			2011
	Deferred Leasing Costs(1)	$	1,314		$	714		$	468
	Above-Market Leases(2)	10,374			7,658			6,385
	In-Place Leases(1)	36,653			28,826			23,987
	Below-Market Leases(2)	(3,972		)	(5,173		)	(4,254		)
	Above-Market Ground Lease Obligation(3)	(71		)	(71		)	(18		)
	__________
	-1	The amortization of deferred leasing costs and in-place leases are recorded to depreciation and amortization expense in the 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 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 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, 2013 (in thousands):
		Intangible Assets									Intangible Liabilities
		Deferred Leasing Costs			Acquired			Acquired			Acquired		Above-Market
					Above-Market			In-Place			Below-Market		Ground Lease
					Leases			Leases			Leases		Obligations
	2014	$	1,318		$	9,496		$	36,736		$	4,129	$	71
	2015	1,117			9,082			34,408			3,960		71
	2016	1,018			5,540			27,619			3,381		71
	2017	958			4,399			23,182			2,889		71
	2018	915			3,897			20,278			2,570		71
	Thereafter	2,901			11,189			54,819			9,800		986
		$	8,227		$	43,603		$	197,042		$	26,729	$	1,341

Debt

Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	Secured notes payable are summarized as follows (in thousands):
			Stated		Effective Interest Rate (1)		Maturity Date		December 31,
	Property		Interest Rate						2013			2012
	Avion Midrise III & IV (2)		5.52%		7.00%		4/1/14		$	19,979		$	20,464
	Maskew Retail Park - Swapped to Fixed(3)		5.68%		5.68%		8/10/14		23,161			22,698
	12650 Ingenuity Drive		5.62%		7.50%		10/1/14		11,842			12,272
	Bolingbrook Point III		5.26%		5.26%		1/1/15		7,900			7,900
	One Wayside Road		5.66%		5.25%		8/1/15		13,352			13,745
	One Wayside Road		5.92%		5.25%		8/1/15		11,169			11,464
	Lakeside Office Center		6.03%		6.03%		9/1/15		8,743			8,862
	Deerfield Commons I		5.23%		5.23%		12/1/15		9,290			9,442
	Celebration Office Center III(4)(5)		4.25%		2.50%		12/1/15		8,998			—
	22535 Colonial Pkwy(4)(5)		4.25%		2.50%		12/1/15		8,051			—
	Northpoint III(4)(5)		4.25%		2.50%		12/1/15		10,419			—
	Goodyear Crossing II(4)(5)		4.25%		2.50%		12/1/15		19,891			—
	3900 North Paramount Parkway(4)(5)		4.25%		2.50%		12/1/15		7,815			—
	3900 South Paramount Parkway(4)(5)		4.25%		2.50%		12/1/15		7,815			—
	1400 Perimeter Park Drive(4)(5)		4.25%		2.50%		12/1/15		2,368			—
	Miramar I(4)(5)		4.25%		2.50%		12/1/15		9,283			—
	Miramar II(4)(5)		4.25%		2.50%		12/1/15		12,503			—
	70 Hudson Street		5.65%		5.15%		4/11/16		116,100			117,981
	Point West I - Swapped to Fixed(4)		3.41%		3.41%		12/6/16		11,041			—
	100 Tice Blvd		5.97%		4.38%		9/15/17		19,544			20,094
	100 Tice Blvd		5.97%		4.38%		9/15/17		19,543			20,093
	4701 Gold Spike Drive(6)		4.45%		4.45%		3/1/18		10,154			10,342
	1985 International Way(6)		4.45%		4.45%		3/1/18		7,055			7,186
	3770 Deerpark Boulevard(6)		4.45%		4.45%		3/1/18		7,294			7,428
	Tolleson Commerce Park II(6)		4.45%		4.45%		3/1/18		4,386			4,467
	20000 S. Diamond Lake Road(6)		4.45%		4.45%		3/1/18		6,388			—
	Atrium I - Swapped to Fixed(4)		3.78%		3.78%		5/31/18		22,516			—
	McAuley Place(4)		3.98%		3.50%		9/1/18		13,230			—
	Easton III - Swapped to Fixed(4)		3.95%		3.95%		1/31/19		6,466			—
	90 Hudson Street		5.66%		5.26%		5/1/19		104,928			106,465
	Fairforest Bldg. 6		5.42%		6.50%		6/1/19		2,086			2,402
	North Rhett I		5.65%		6.50%		8/1/19		2,405			2,827
	Kings Mountain II		5.47%		6.50%		1/1/20		4,043			4,589
	North Rhett II		5.20%		6.50%		10/1/20		1,628			1,822
			Stated		Effective Interest Rate (1)		Maturity Date		December 31,
	Property		Interest Rate						2013			2012
	Mount Holly Bldg.		5.20%		6.50%		10/1/20		1,628			1,822
	Orangeburg Park Bldg.		5.20%		6.50%		10/1/20		1,656			1,853
	Kings Mountain I		5.27%		6.50%		10/1/20		1,411			1,578
	Ten Parkway North		4.75%		4.75%		1/1/21		11,777			12,072
	Union Cross Bldg. II		5.53%		6.50%		6/1/21		6,471			7,149
	Union Cross Bldg. I		5.50%		6.50%		7/1/21		2,124			2,344
	Norman Pointe I(4)		5.24%		3.50%		10/1/21		20,512			—
	Norman Pointe II(4)		5.24%		3.50%		10/1/21		22,583			—
	The Landings I(4)		5.24%		3.50%		10/1/21		15,437			—
	The Landings II(4)		5.24%		3.50%		10/1/21		13,616			—
	Fairforest Bldg. 5		6.33%		6.50%		2/1/24		8,277			8,840
	North Rhett IV		5.80%		6.50%		2/1/25		8,414			8,935
	Thames Valley Five - Swapped to Fixed(7)		6.42%		6.42%		5/29/13		—			9,160
	Sabal Pavilion(8)		6.38%		3.00%		8/1/13		—			14,700
	Albion Mills Retail Park - Swapped to Fixed(9)		5.25%		5.25%		10/10/13		—			9,288
	Summit Distribution Center(10)		4.45%		4.45%		3/1/18		—			6,506
	Total Secured Notes Payable								665,292			496,790
	Plus Premium								17,294			7,555
	Less Discount								(1,386		)	(2,113		)
	Total Secured Notes Payable, Net								$	681,200		$	502,232
	__________
	-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 in January 2014. See Note 19, Subsequent Events, for more information.
-3	The loan is subject to certain financial covenants (interest coverage and loan to value).
-4	The loans were assumed in connection with the acquisition of Duke Realty's 20% interest in the 17 properties held by the Duke JV on March 1, 2013 and were recorded at estimated fair value which included a $13.5 million total premium.
-5	These nine loans are cross-collateralized.
-6	These five loans are cross-collateralized.
-7	The loan was paid off in full on May 29, 2013.
-8	The loan was paid off in full on May 1, 2013.
-9	This loan was presented at fair value. The fair value adjustment to its cost basis was $(85) at December 31, 2012. We paid off this loan in full on October 9, 2013.
-10	This loan was paid off in full on December 20, 2013.
Unsecured Term Loan Facilities
On March 6, 2013, we entered into an unsecured term loan in the amount of $50.0 million (the"TD Term Loan") with TD Bank, N.A ("TD Bank") with a maturity date of March 6, 2020. Upon closing the TD Term Loan, we simultaneously entered into an interest rate swap agreement with TD Bank to effectively fix the interest rate on the TD Term Loan at 3.425% per annum for its seven year term, based upon the TD Term Loan's then current stated applicable margin. This applicable margin, and therefore the effective interest rate on the TD Term Loan, may vary during its term by an increase of up to 0.75% based upon the then current leverage ratio. Upon the Company's receipt of a credit rating in December 2013, the applicable margin on the TD Term Loan was reduced by 0.40% based on our then current credit rating. The TD Term Loan contains customary representations and warranties and covenants. We used the proceeds of the TD Term Loan to repay a portion of our borrowings under our unsecured revolving credit facility.
On March 7, 2013, we entered into an unsecured term loan in the amount of $200.0 million (the "WF Term Loan #1") with Wells Fargo Bank, National Association ("Wells Fargo Bank") and certain other lenders. Upon closing the WF Term Loan #1, we simultaneously entered into an interest rate swap agreement with Wells Fargo Bank to effectively fix the interest rate on the WF Term Loan #1 at 2.4885% per annum for its five-year term, based upon the WF Term Loan #1's then current stated applicable margin. This applicable margin, and therefore the effective interest rate on the WF Term Loan #1, may vary during its term by an increase of up to 0.60% based upon the then current leverage ratio. The WF Term Loan #1 contains customary representations and warrants and covenants. We used the proceeds to repay a portion of our borrowings under our unsecured revolving credit facility.
On September 12, 2013, we entered into an unsecured term loan in the amount of $120.0 million (the "Capital One Term Loan") with Capital One, National Association ("Capital One") and certain other lenders. Upon closing the Capital One Term Loan, we simultaneously entered into an interest rate swap agreement with Capital One to effectively fix the interest rate on the Capital One Term Loan at 4.42125% per annum for its entire term until the Capital One Term Loan's scheduled maturity on January 31, 2021, based upon the Capital One Term Loan's current stated applicable margin. This applicable margin, and therefore the effective interest rate on the Capital One Term Loan, may vary during its term from a 0.20% reduction to a 0.35% increase based upon the then current leverage ratio, or from a 0.55% reduction to a 0.25% increase based upon our then current credit rating. Upon the Company's receipt of a credit rating in December 2013, the applicable margin on the Capital One Term Loan was reduced by 0.25%. We used the majority of the proceeds to repay a portion of our borrowings under our unsecured revolving credit facility.
On September 26, 2013, in connection with the amendment and restatement to the Credit Agreement with Wells Fargo Bank (the "Amendment and Restatement") (see additional information below under "Unsecured Revolving Credit Facility"), our WF Term Loan #1 was replaced with a new unsecured term loan (the "WF Term Loan #2") with the same amount of $200.0 million and the same maturity date of March 7, 2018 as for the WF Term Loan #1. The existing swap agreement entered into on March 7, 2013 upon closing of the WF Term Loan #1 remained in place and is now applicable to the WF Term Loan #2 in order to effectively fix its interest rate at 2.6385% per annum for its term, based upon the WF Term Loan #2's current stated applicable margin. In addition, on September 26, 2013, and also in connection with the Amendment and Restatement (see additional information below under "Unsecured Revolving Credit Facility"), we entered into a new $200.0 million unsecured term loan (the "WF Term Loan #3"). Upon closing the WF Term Loan #3, we simultaneously entered into an interest rate swap agreement to effectively fix the interest rate on the WF Term Loan #3 at 3.274% per annum for its entire term until the WF Term Loan #3's scheduled maturity on January 15, 2019, based upon the WF Term Loan #3's current stated applicable margin. The applicable margin on both the WF Term Loan #2 and the WF Term Loan #3, and therefore the effective interest rate on both of these loans, may vary during their terms from a 0.20% reduction to a 0.35% increase based upon the then current leverage ratio. Upon the Company's receipt of a credit rating in December 2013, the applicable margins on the WF Term Loan #2 and the WF Term Loan #3 were both reduced by 0.30%. We used the majority of the WF Term Loan #3 proceeds to repay a portion of our borrowings under our unsecured revolving credit facility.
The terms of our Unsecured Term Loan Facilities as of December 31, 2013 are set forth in the table below:
		Unswapped Interest Rate		Effective Interest Rate (1)		Maturity Date		Outstanding Balance
Term Loan Facility
WF Term Loan #2 (2)		LIBOR + 1.50%		2.49%		3/7/18		$	200,000
WF Term Loan #3 (2)		LIBOR + 1.50%		3.12%		1/15/19		200,000
TD Term Loan (3)		LIBOR + 1.75%		3.28%		3/6/20		50,000
Capital One Term Loan (2)		LIBOR + 1.75%		4.32%		1/31/21		120,000
Total Unsecured Term Loan Facilities								$	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, 2013, the applicable LIBOR rate was 0.165% for these loans.
-3	As of December 31, 2013, the applicable LIBOR rate was 0.16875% for this loan.
Unsecured Revolving Credit Facility
The terms of our unsecured revolving credit facility are set forth in the table below:
	December 31,
	2013				2012
	(in thousands)
Outstanding Borrowings	$	170,044			$	265,000
Remaining Borrowing Capacity	679,956				435,000
Total Borrowing Capacity	$	850,000			$	700,000
Interest Rate(1)	1.47		%		1.82		%
Facility or Unused Fee(2)	30 bps				30 bps
Maturity Date(3)	15-Jan-18				13-Sep-16
__________
-1	Calculated based on one-month LIBOR plus 1.30% and 1.60% as of December 31, 2013 and December 31, 2012, respectively.
-2	Effective December 10, 2013, the unused fee was replaced with a facility fee. The unused fee was based on the unsecured revolving credit facility's unused remaining borrowing capacity. The facility fee is based on the unsecured revolving credit facility's total borrowing capacity.
-3	Under the original and amended terms of our unsecured revolving credit facility, we may exercise an option to extend the maturity date by one year.
On September 13, 2012, we entered into a credit agreement with a group of lenders to provide us with an unsecured revolving credit facility with an initial capacity of $700.0 million (the "Credit Agreement"). This unsecured revolving credit facility had a term of four years, which term may have been extended for one year at our option provided that we were not then in default and upon payment of customary extension fees.
On March 7, 2013, we entered into a First Amendment to our Credit Agreement (the "First Amendment"). The First Amendment modified our unsecured revolving credit facility to among other things: (i) amend certain definitions, (ii) amend certain requirements of the guarantor, (iii) amend the requirements relating to quarterly financial statements, annual statements, compliance certificates and certain other SEC filings, (iv) amend the requirements relating to electronic delivery of information, (v) provide the Company with an option to restate the tangible net worth covenant in the event of a redemption event, (vi) remove the restriction on negative pledges, (vii) amend the restrictions on intercompany transfers and (viii) amend certain disclosure and confidentiality provisions.
On September 26, 2013, we entered into the Amendment and Restatement to our Credit Agreement. The Amendment and Restatement modified our unsecured revolving credit facility to increase its capacity from $700.0 million to $850.0 million. The unsecured revolving credit facility's term was extended to January 15, 2018, which may be extended for one year at our option upon the payment of customary extension fees, provided that we are not then in default. The unsecured revolving credit facility has no minimum outstanding balance requirements. Upon the Company's receipt of a credit rating in December 2013, the applicable margin on the unsecured revolving credit facility was reduced from 1.60% (as of December 31, 2012) to 1.30%.
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, 2013, 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 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 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, 2013, 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, 2013 (in thousands):
2014	$	70,634
2015	148,476
2016	134,179
2017	46,355
2018	442,113
Thereafter	563,579
	$	1,405,336

Risk_Management_and_Use_of_Fin

Risk Management and Use of Financial Instruments	12 Months Ended
	Dec. 31, 2013
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, 2013 and 2012 (amounts in thousands):
		Notional Amount								Fair Value						Rate
	Type of Instrument	December 31, 2013				December 31, 2012				December 31, 2013			December 31, 2012			December 31, 2013		December 31, 2012		Index	Maturity Date
	Interest Rate Swap	$	23,161			$	22,698			$	(398	)	$	(1,015	)	2.9	%	2.9	%	GBP LIBOR(1)	8/10/14
	Interest Rate Swap(2)	11,041								(205		)				1.2	%			LIBOR	12/6/16
	Interest Rate Swap(3)	200,000								2,854						0.8	%			LIBOR	3/7/18
	Interest Rate Swap(2)	22,516								(361		)				1.6	%			LIBOR	5/31/18
	Interest Rate Swap	200,000								667						1.4	%			LIBOR	1/15/19
	Interest Rate Swap(2)	6,466								(86		)				1.8	%			LIBOR	1/31/19
	Interest Rate Swap(3)	50,000								1,690						1.3	%			LIBOR	3/6/20
	Interest Rate Swap	120,000								(1,515		)				2.4	%			LIBOR	1/31/21
	Interest Rate Swap(4)					9,160							(182		)			4.9	%	GBP LIBOR(1)
	Interest Rate Swap(5)					9,280							(241		)			3.4	%	GBP LIBOR(1)
	__________
	-1	Based on the three month GBP-based LIBOR BBA Index with variable rate reset dates every 90 days during the term of the swaps.
	-2	We assumed this swap in connection with the purchase of the Duke Portfolio on March 1, 2013. This swap is 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.
	-3	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 are 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.
	-4	We terminated this interest rate swap in May 2013.
	-5	We terminated this interest rate swap in October 2013.
	We record all derivative instruments on a gross basis in the 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, 2013				December 31, 2012				Balance Sheet Location	December 31, 2013			December 31, 2012
	Derivatives designated as hedging instruments
	Interest Rate Swaps	Prepaid Expenses and Other Assets		$	5,211			$	—			Accounts Payable, Accrued Expenses and Other Liabilities	$	2,565		$	1,015
	Derivatives not designated as hedging instruments
	Interest Rate Swaps	Prepaid Expenses and Other Assets		$	—			$	—			Accounts Payable, Accrued Expenses and Other Liabilities	$	—		$	423
	The table below presents the effect of our derivative instruments on our consolidated statement of operations for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Derivatives Designated as Cash Flow Hedges:
	Gain (Loss) Recognized in Other Comprehensive Income (OCI) (Effective Portion)	$	(116	)		$	(7,024	)		$	(14,353	)
	Loss Reclassified from AOCI into Interest Expense (Effective Portion)	(4,054		)		(4,267		)		(3,945		)
	Loss Recognized in Interest Expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)	(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			$	397
	Net Settlement Payments from Non-Qualifying Interest Rate Swaps	(1,158		)		(682		)		(700		)
	Loss Reclassified from AOCI into Gain on Conversion of Equity Interest to Controlling Interest	(1,414		)		—				—
	At December 31, 2013, 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 $8.7 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, 2013.
	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, 2013
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, 2013 (in thousands):
	2014	$	203,378
	2015	201,200
	2016	182,463
	2017	165,356
	2018	153,550
	Thereafter	514,457
		$	1,420,404

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
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.
	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 indicated periods (in thousands):
			Year Ended
			December 31,
			2013		2012		2011
	Investment Management Fees		$	489	$	29,695	$	21,004
	Transition Services Agreement Fees		686		2,500		—
	Acquisition-Related Fees		1,895		5,159		12,603
	Property Management Fees (1)		1,128		1,556		1,470
	Leasing Commissions (1)		836		876		1,952
	Construction Supervision and Management Fees (1)		873		1,049		154
	Brokerage Fees(2)		585		388		111
	Mortgage Banking Fees and Other		—		26		2,440
	Total		$	6,492	$	41,249	$	39,734
	__________
	-1	Such fees for each service ranged from 2.0% to 5.0% of gross revenues received from a property that we owned.
	-2	The brokerage fee upon the sale of properties was an amount equal to the lesser of (i) one-half of the competitive real estate commission or (ii) 3% of the sales price of each property sold. The total brokerage commission paid did not exceed the lesser of the competitive real estate commission or an amount equal to 6% of the sales price of the property.
	As required by the Transitional Services Agreement, we and the former investment advisor 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. As of December 31, 2013, we acquired one Qualifying Property and paid the former investment advisor $0.4 million in acquisition consulting fees. Subsequent to December 31, 2013, we completed the acquisition of a second 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.
	As of 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. All outstanding investment advisor-related fees have been paid as of December 31, 2013. As of 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.
	Class B Interest
	For a discussion of the Class B Interest previously owned by an affiliate of our former investment advisor, see Note 10, Non-Controlling Interests, below.

NonControlling_Interest

Non-Controlling Interest	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Non-Controlling Interest	'
	Non-Controlling Interests
	Non-Controlling Interest Operating Partnership Units
	As of December 31, 2013, we owned 100% of the Class A limited partnership units of CSP OP. As of December 31, 2012 and 2011, we owned 99.90% and 99.87% of the Class A limited partnership units of CSP OP, respectively. The remaining Class A limited partnership units of CSP OP, as of December 31, 2012 and 2011, were owned by REIT Holdings in the form of 246,361 Class A limited partnership units, which were exchangeable for cash or, at the Company's discretion, on a one for one basis for common shares of the Company.
	On August 19, 2013, we redeemed for cash 246,361 Class A limited partnership units for $2.2 million, which were owned by REIT Holdings. In connection with the redemption, certain of the Company's officers and employees received a cash distribution from REIT Holdings with respect to their distribution interests they held in REIT Holdings.
	Class B Interest
	In exchange for services provided to the Company with respect to its formation and subsequent operations, REIT Holdings was granted the Class B Interest in CSP OP, the terms of which are more fully described in the third amended and restated agreement of limited partnership of CSP OP (the "Third Amended Partnership Agreement"). REIT Holdings is an affiliate of the former investment advisor and certain of the Company's officers and employees owned distribution interests in REIT Holdings. A mandatory redemption of the Class B Interest by CSP OP was triggered by the Listing.
	The consideration to be received by REIT Holdings for the Class B Interest ("Consideration") would have been 15% of the total market value of the Company's listed common shares above a threshold amount (the "Class B Return Threshold") equal to (i) the total capital contributions made to CSP OP by us and (ii) a 7% annual, uncompounded return on such capital contributions. The calculation of the Consideration was based upon the total number of our listed common shares multiplied by the average per share closing price of our common shares for the 30 day period (the "30-Day Market Value") beginning on October 19, 2013 and ending on November 17, 2013. The 30-Day Market Value did not exceed the Class B Return Threshold and the Class B interest was redeemed at no cost on November 26, 2013.

Equity_Incentive_Plan_and_Perf

Equity Incentive Plan and Performance Bonus Plan	12 Months Ended
	Dec. 31, 2013
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. A description of the material terms of the 2013 equity incentive plan, as well as a copy of the 2013 equity incentive plan, were included in our definitive proxy statement on Schedule 14A filed with the SEC on April 12, 2013. 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, 2013, there were 4,597,500 common shares available for grant under the 2013 equity incentive plan.
	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. Jack Cuneo, Philip Kianka and MartinReid) 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.
	2011 Awards
	On June 17, 2011, our Board's independent trustees, Messrs. Black, Reid and Orphanides, were awarded equity grants under the amended and restated 2004 equity incentive plan on the following terms: (i) each award was for $9,200 in restricted common shares of the Company (or 1,000 shares at $9.20 per share) for a total of $27,600; (ii) each award vested in its entirety, upon issuance; and (iii) the independent trustee would not be able to redeem any of the restricted common shares prior to the third anniversary of date of issuance, but retains the rights to dividends declared and paid during such restriction period. We recognized a stock based compensation expense of $27,600 during the year ended December 31, 2011 as a result of granting these awards to our independent trustees.
	Summary of Time-Based Restricted Common Shares
	A summary of our Time-Based Restricted Common Shares from January 1, 2013 through December 31, 2013 is presented below:
		Nonvested
		Shares		Weighted-Average			Vested
				Grant Date
				Fair Value
				per Share
	Outstanding at January 1, 2013	300,000		$	10		—
	Granted	398,925		10			—
	Vested	(100,000	)	10			100,000
	Canceled (1)	—		—			(33,515	)
	Outstanding as of December 31, 2013	598,925		$	10		66,485
	__________
	-1	33,515 common shares were tendered in accordance with the terms of the 2013 equity incentive plan to satisfy minimum federal and 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.
	Summary of Performance-Based Restricted Common Shares
	A summary of Performance-Based Restricted Common Shares from January 1, 2013 through December 31, 2013 is presented below:
		Nonvested
		Shares		Weighted-Average			Vested
				Grant Date
				Fair Value
				per Share
	Outstanding January 1, 2013	375,000		$	10		—
	Granted	27,500		8.9			—
	Vested	(402,500	)	9.92			402,500
	Canceled (1)	—		—			(144,563	)
	Outstanding as of December 31, 2013	—		$	—		257,937
	__________
	-1	144,563 common shares were tendered in accordance with the terms of the 2013 equity incentive plan to satisfy minimum federal and 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.
		2013			2012			2011
	Compensation Expense Recorded During the Years ended December 31 (1)	$	5,713		$	445		$	28
	Unamortized Compensation Costs	$	4,444		$	6,167		$	—
	Shares Available for the Future Awards(2)	4,597,500			19,298,000			19,973,000
	__________
	-1	Compensation Expense includes expenses incurred in our Listing Expense totaling $3.8 million.
	-2	Shares available for the future awards includes units under the 2013 equity incentive plan, which was the successor to the amended and restated 2004 equity incentive plan.

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2013
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 all outstanding 14,501 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, 2013, 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, 2013, 2012 and 2011 (in thousands):
		Foreign Currency			Swap Fair Value			Accumulated Other
		Translation Gain (Loss)			Adjustment			Comprehensive
								Income (Loss)
	Balance at January 1, 2011	$	(9,758	)	$	(1,928	)	$	(11,686	)
	Other Comprehensive Loss Before Reclassifications	(821		)	(11,157		)	(11,978		)
	Balance at December 31, 2011	$	(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

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments and Investments	12 Months Ended
	Dec. 31, 2013
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. We have classified the debt secured by Albion Mills Retail Park as Level 3 as of December 31, 2012 due to the lack of current market activity and our reliance on unobservable inputs to estimate the fair value of the mortgage note payable. At December 31, 2012, the fair value of the mortgage note payable was determined using a market interest rate of 3.015%. We repaid the debt secured by Albion Mills Retail Park in October 2013.
	As of December 31, 2013 and December 31, 2012, 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 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, as reviewed by the Vice President-Accounting, 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, 2013 and December 31, 2012, 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 ("SP 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 obtained financial results of SP Asia and compares this information to benchmark data. In addition, the Company receives audited financial statements on an annual basis.
	The following items are measured at fair value on a recurring basis at December 31, 2013 and December 31, 2012 (in thousands):
		As of December 31, 2013
						Fair Value Measurements Using:
		Total				Quoted				Significant			Significant
		Fair Value				Markets				Observable			Unobservable
						Prices				Inputs			Inputs
						(Level 1)				(Level 2)			(Level 3)
	Financial Assets (Liabilities)
	Cash and 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
		As of December 31, 2012
						Fair Value Measurements Using:
		Total				Quoted				Significant			Significant
		Fair Value				Markets				Observable			Unobservable
						Prices				Inputs			Inputs
						(Level 1)				(Level 2)			(Level 3)
	Financial Assets (Liabilities)
	Cash and Cash Equivalents	$	6,495			$	6,495			$	—		$	—
	Interest Rate Swaps Not Designated as Cash Flow Hedges - Liabilities	(423		)		—				(423		)	—
	Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	(1,015		)		—				(1,015		)	—
	Investment in CBRE Strategic Partners Asia	8,098				—				—			8,098
	Secured Notes Payable - Albion Mills	(9,288		)		—				—			(9,288		)
	Class B Interest	(200		)		—				—			(200		)
	The following table presents our activity for the variable rate note payable and 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, 2013 and 2012, respectively (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in				Secured Notes Payable - Albion Mills
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2013		$	8,098			$	(9,288	)
	Contributions		—				9,341
	Distributions		—				—
	Total Income (Loss) on Fair Value Adjustment		1,578				(80		)
	Translation Adjustment in Other Comprehensive Income		—				27
	Balance as of December 31, 2013		$	9,676			$	—
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in				Secured Notes Payable - Albion Mills
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2012		$	8,381			$	(8,775	)
	Contributions		2,030				—
	Distributions		(2,400		)		—
	Total Income (Loss) on Fair Value Adjustment		87				(111		)
	Translation Adjustment in Other Comprehensive Income		—				(402		)
	Balance at December 31, 2012		$	8,098			$	(9,288	)
	Gains and losses (realized and unrealized) included in earnings related to the elected fair value note payable for the years ended December 31, 2013 and 2012, respectively, are reported as components of "Other Income and Expense" on the consolidated statements of operations.
	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, 2013 and December 31, 2012 (in thousands):
			Carrying Value								Fair Value
	Financial Instrument		December 31,				December 31,				December 31,			December 31,
			2013				2012				2013			2012
	Secured Notes Payable(1)		$	681,200			$	492,944			$	721,728		$	514,451
	Secured Notes Payable - Albion Mills(2)		—				9,288				—			9,288
	Total Secured Notes Payable		$	681,200			$	502,232			$	721,728		$	523,739
	Unsecured Term Loan Facilities(1)		$	570,000			$	—			$	570,272		$	—
	Unsecured Revolving Credit Facility		$	170,044			$	265,000			$	170,044		$	265,000
	__________
	-1	Items are measured using Level 2 inputs.
	-2	Items are measured using Level 3 inputs. For purposes of this fair value disclosure, we based our fair value estimate for notes payable on our internal valuation that includes a representative sample of our lenders' market interest rate quotes as of December 31, 2013 and December 31, 2012 for debt with similar risk characteristics and maturities. We based our notes payable secured by our Albion Mills property carried at fair value on a third party appraiser's valuation, which used similar techniques as our internal valuation model as of December 31, 2012.
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. We classified the notes payable secured by Albion Mills as Level 3 as of December 31, 2012 due to the lack of current market activity and our reliance on unobservable inputs to estimate the fair value of the debt. The notes payable were repaid in 2013.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
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, 2013 and thereafter is as follows (in thousands):
	2014	$	273
	2015	273
	2016	273
	2017	273
	2018	276
	Thereafter	4,782
		$	6,150
	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, 2013
Segment Reporting [Abstract]	'
Segment Disclosure	'
	Segment Disclosure
	Our reportable segments consist of three types of commercial real estate properties, namely, Domestic Industrial Properties, Domestic Office Properties and International Office/Retail Properties. 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 and tenant reimbursements 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, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013			2012			2011
	Domestic Industrial Properties
	Revenues:
	Rental	$	54,256		$	42,360		$	30,030
	Tenant Reimbursements	15,848			8,861			6,466
	Total Revenues	70,104			51,221			36,496
	Property and Related Expenses:
	Property Operating	4,299			3,196			2,736
	Real Estate Taxes	14,004			7,621			6,102
	Total Property and Related Expenses	18,303			10,817			8,838
	Net Operating Income	$	51,801		$	40,404		$	27,658
	Domestic Office Properties
	Revenues:
	Rental	$	136,663		$	97,164		$	83,897
	Tenant Reimbursements	37,177			24,314			20,058
	Total Revenues	173,840			121,478			103,955
	Property and Related Expenses:
	Property Operating	26,433			17,528			15,248
	Real Estate Taxes	23,967			15,015			11,548
	Total Property and Related Expenses	50,400			32,543			26,796
	Net Operating Income	$	123,440		$	88,935		$	77,159
	International Office/Retail Properties
	Revenues:
	Rental	$	5,787		$	5,908		$	5,154
	Tenant Reimbursements	281			236			211
	Total Revenues	6,068			6,144			5,365
	Property and Related Expenses:
	Property Operating	489			740			1,207
	Total Property and Related Expenses	489			740			1,207
	Net Operating Income	$	5,579		$	5,404		$	4,158
		Year Ended December 31,
		2013			2012			2011
	Reconciliation to Consolidated Net Income (Loss)
	Total Segment Net Operating Income	$	180,820		$	134,743		$	108,975
	Expenses:
	General and Administrative	23,138			14,660			5,132
	Investment Management Fee	489			29,695			20,908
	Acquisition-related Expenses	2,690			7,752			14,464
	Depreciation and Amortization	102,793			72,383			60,353
	Transition and Listing Expenses	12,681			8,249			—
		39,029			2,004			8,118
	Other Income and Expenses
	Interest and Other Income	1,321			2,235			1,607
	Interest Expense	(47,295		)	(33,845		)	(33,261		)
	Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	614			(118		)	(303		)
	Loss on Early Extinguishment of Debt	(1,051		)	(17,284		)	(108		)
	Gain on Conversion of Equity Investment to Controlling Interest	75,763			—			—
	Income (Loss) from Continuing Operations Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	68,381			(47,008		)	(23,947		)
	Provision for Income Taxes	(287		)	(266		)	(456		)
	Equity in Income of Unconsolidated Entities	12,111			3,959			3,590
	Net Income (Loss) from Continuing Operations	80,205			(43,315		)	(20,813		)
	Discontinued Operations
	Income from Discontinued Operations	382			720			1,227
	Gain (Loss) on Sale of Real Estate	2,759			(413		)	301
	Income From Discontinued Operations	3,141			307			1,528
	Net Income (Loss)	$	83,346		$	(43,008	)	$	(19,285	)
		Year Ended December 31,
	Condensed Assets	2013			2012
Domestic Industrial Properties	$	725,566		$	678,930
Domestic Office Properties	1,601,513			1,077,328
International Office/Retail Properties	88,571			105,502
Non-Segment Assets	594,946			616,276
Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	—			76,826
Total Assets	$	3,010,596		$	2,554,862
	Year Ended December 31,
Condensed Expenditures	2013			2012
Domestic Industrial Properties	$	82,274		$	239,470
Domestic Office Properties	510,081			28,914
International Office/Retail Properties	—			668
Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	—			56,180
Total Capital Expenditures	$	592,355		$	325,232

Earnings_Per_Share_Attributabl

Earnings Per Share Attributable to Common Shareholders	12 Months Ended
	Dec. 31, 2013
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 (loss) available to common shareholders for the years ended December 31, 2013, 2012 and 2011 is as follows (in thousands except share data):
		Year Ended December 31,
		2013			2012			2011
	Numerator:
	Income (Loss) from Continuing Operations	$	80,205		$	(43,315	)	$	(20,813	)
	(Income) Loss from Continuing Operations Attributable to Noncontrolling Interests	(82		)	32			26
	Allocation to Participating Securities (Nonvested Time-Based Shares)	(360		)	(90		)	—
	Numerator for Basic and Diluted Income (Loss) from Continuing Operations	79,763			(43,373		)	(20,787		)
	Income from Discontinued Operations	3,141			307			1,528
	Numerator for Basic and Diluted Income (Loss) Available to Common Shareholders	$	82,904		$	(43,066	)	$	(19,259	)
	Denominator:
	Basic Weighted Average Vested Shares Outstanding	242,379,680			248,154,277			192,042,918
	Effect of Dilutive Securities - Performance-Based Shares (1)	—			—			—
	Diluted Weighted Average Vested Shares Outstanding	242,379,680			248,154,277			192,042,918
	Basic and Diluted Earnings Per Share:
	Income (Loss) from Continuing Operations Available to Common Shareholders per Share	$	0.33		$	(0.17	)	$	(0.11	)
	Income (Loss) from Discontinued Operations Available to Common Shareholders per Share	$	0.01		$	0		$	0.01
	Net Income (Loss) Available to Common Shareholders per Share	$	0.34		$	(0.17	)	$	(0.10	)
	__________
	-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, 2013
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, 2013, 2012 and 2011:
		2013			2012				2011
	Distributions declared per common share	$	0.551		$	0.6			$	0.6
	Less: Distributions declared in the current period, and paid in the subsequent period	(0.042		)	(0.150		)		(0.150		)
	Add: Distributions declared in the prior year, and paid in the current year	0.15			0.15				0.15
	Distributions paid per common share	$	0.659		$	0.6			$	0.6
	Distributions to shareholders during the years ended December 31, 2013, 2012 and 2011, totaled approximately $159.6 million, $144.3 million and $106.4 million, respectively.
	The income tax treatment for distributions declared for the years ended December 31, 2013, 2012 and 2011 as identified above, were as follows:
		2013						2012						2011
	Ordinary Income	$	0.2903		44.1	%		$	0.087			14.5	%	$	0.239	39.9	%
	Return of Capital	0.3614			54.8	%		0.513				85.5	%	0.361		60.1	%	(1)
	Capital Gain (2)	0.0073			1.1	%		—				—	%	—		—	%
		$	0.659		100	%		$	0.6			100	%	$	0.6	100	%
	__________
	-1	This percentage is comprised of return of capital at 59.6% and qualified dividend income at 0.5%.
	-2	Capital gains are comprised entirely of unrecaptured Section 1250 gains.

Quarterly_Financial_Informatio

Quarterly Financial Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Quarterly Financial Information (unaudited)	'
	Quarterly Financial Information (unaudited)
	Summarized quarterly financial data for the years ended December 31, 2013 and 2012 was as follows (in thousands, except per share amounts):
		2013 Quarter Ended
		March 31			June 30			September 30			December 31
	Revenues from Continuing Operations	$	53,432		$	66,556		$	64,786		$	65,238
	Net Operating Income (Loss) from Continuing Operations	77,704			(6,154		)	(2,525		)	(644		)
	Net 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) per common share-basic and diluted	$	0.33		$	(0.01	)	$	0		$	0.02
		2012 Quarter Ended
		March 31			June 30			September 30			December 31
	Revenues from Continuing Operations	$	42,719		$	44,198		$	46,474		$	45,452
	Net Operating Loss from Continuing Operations	(2,824		)	(2,610		)	(13,358		)	(28,216		)
	Loss from Continuing Operations	(2,264		)	(1,683		)	(12,506		)	(26,862		)
	Income (Loss) from Discontinued Operations	110			(216		)	122			291
	Net Loss	(2,154		)	(1,899		)	(12,384		)	(26,571		)
	Net Loss Attributable to Common Shareholders	(2,152		)	(1,899		)	(12,379		)	(26,546		)
	Net Loss per common share-basic and diluted	$	(0.01	)	$	(0.01	)	$	(0.05	)	$	(0.11	)

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	On January 2, 2014, we acquired 445 Airtech Parkway located in Indianapolis, Indiana for $30.2 million exclusive of customary closing costs. The acquisition was funded using borrowings from our unsecured revolving credit facility and proceeds from the sale of properties. 445 Airtech Parkway is a 622,400 square foot distribution building and is 100% leased to the Hartz Mountain Corporation.
	On January 2, 2014, we paid off the notes payable secured by Avion III and IV in the amount of approximately $20.0 million.
	On January 7, 2014, we announced that we received a BBB- corporate rating from Standard and Poor's Rating Services ("S&P"). S&P also gave us a stable outlook, reflecting our high-quality real estate portfolio and selective acquisition strategy, which S&P believes will support solid revenue and earnings growth in the near future.
	On January 16, 2014, the Duke JV sold an office property located in Chicago, Illinois for approximately $13.1 million.  In connection with the sale of the property, the Duke JV incurred a loss of $0.3 million during the year ended December 31, 2013.  Our pro rata share of the net proceeds of the sale following payment of customary closing expenses was approximately $10.2 million.
	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 was awarded 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 common shares; and (ii) each award vested in its entirety, upon issuance.
	On February 26, 2014, our Board of Trustees approved a monthly distribution of $0.042 per common share for each of the months of April, May and June of 2014. The April dividend will be paid on May 7, 2014, to all holders of record on April 30, 2014, the May dividend will be paid on June 6, 2014, to all holders of record on May 30, 2014, and the June dividend will be paid on July 8, 2014, to all holders of record on June 30, 2014.
	On February 26, 2014, the Company and Operating Partnership entered in an amendment to Martin R. 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.

Schedule_IIISchedule_of_Invest

Schedule III-Schedule of Investments in Real Estate	12 Months Ended
	Dec. 31, 2013
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]	'
Schedule III-Schedule of Investments in Real Estate	'
					Acquisition Costs																Improve-		Total		Accumulated			Net		Deprecia-	Date of
																					ments		Cost		Depreciation			Investments		tion	Acquisition
																					Subsequent				and			in Real		Life(1)	(A)/
																					to Purchase				Amortization			Estate			Construction
	Property		Location		Encumbrance				Land				Site		Building		Tenant		Total		Date										(C)(2)
					Net								Improve-		and		Improve-
													ments		Improve-		ments
															ments
	REMEC Corporate Campus		San Diego, CA		$	—			$	11,862			$	—	$	8,933	$	3,217	$	24,012	$	95	$	24,107	$	(4,549	)	$	19,558	39	9/15/04	(A)
	300 Constitution		Boston, MA		—				5,591				—		13,826		733		20,150		—		20,150		(3,983		)	16,167		39	11/3/04	(A)
	Deerfield Commons I		Atlanta, GA		9,290				2,053				934		7,760		1,363		12,110		2,386		14,496		(4,729		)	9,767		39	6/21/05	(A)
	Deerfield Commons II		Atlanta, GA		—				2,262				—		—		—		2,262		—		2,262		—			2,262		39	6/21/05	(A)
	660 North Dorothy		Dallas, TX		—				1,576				417		3,402		199		5,594		375		5,969		(1,304		)	4,665		39	1/9/06	(A)
	505 Century		Dallas, TX		—				950				304		3,685		119		5,058		1,187		6,245		(1,393		)	4,852		39	1/9/06	(A)
	631 International		Dallas, TX		—				923				238		2,912		285		4,358		101		4,459		(1,029		)	3,430		39	1/9/06	(A)
	602 Central Blvd.		Coventry, UK		—				5,093				268		14,850		—		20,211		715		20,926		(2,730		)	18,196		39	4/27/07	(A)
	Bolingbrook Point III		Chicago, IL		7,900				2,423				522		13,434		164		16,543		7		16,550		(2,542		)	14,008		39	8/29/07	(A)
	Fairforest Bldg. 5		Spartanburg, SC		8,213				1,788				2,462		12,017		100		16,367		11		16,378		(3,092		)	13,286		39	8/30/07	(A)
	Fairforest Bldg. 6		Spartanburg, SC		2,028				1,181				506		3,753		459		5,899		—		5,899		(1,187		)	4,712		39	8/30/07	(A)
	Fairforest Bldg. 7		Spartanburg, SC		—				660				463		4,503		—		5,626		595		6,221		(1,313		)	4,908		39	8/30/07	(A)
	HJ Park Bldg. 1		Spartanburg, SC		—				575				468		2,472		12		3,527		7		3,534		(613		)	2,921		39	8/30/07	(A)
	North Rhett I		Charleston, SC		2,342				1,290				366		9,627		428		11,711		177		11,888		(2,147		)	9,741		39	8/30/07	(A)
	North Rhett II		Charleston, SC		1,561				539				144		5,670		26		6,379		605		6,984		(1,440		)	5,544		39	8/30/07	(A)
	North Rhett III		Charleston, SC		—				631				209		3,366		18		4,224		29		4,253		(650		)	3,603		39	8/30/07	(A)
	North Rhett IV		Charleston, SC		8,126				2,433				1,716		12,445		91		16,685		—		16,685		(2,785		)	13,900		39	8/30/07	(A)
	Jedburg Commerce Park		Charleston, SC		—				4,029				3,026		20,381		149		27,585		309		27,894		(4,743		)	23,151		39	8/30/07	(A)
	Mount Holly Bldg.		Charleston, SC		1,561				1,012				1,050		3,699		18		5,779		55		5,834		(1,089		)	4,745		39	8/30/07	(A)
	Orangeburg Park Bldg.		Charleston, SC		1,588				544				641		3,636		93		4,914		—		4,914		(953		)	3,961		39	8/30/07	(A)
	Kings Mt. I		Charlotte, NC		1,356				508				362		3,097		166		4,133		88		4,221		(849		)	3,372		39	8/30/07	(A)
	Kings Mt. II		Charlotte, NC		3,924				774				1,351		10,199		958		13,282		—		13,282		(2,718		)	10,564		39	8/30/07	(A)
	Kings Mt. III		Charlotte, NC		—				1,183				1,647		13,738		—		16,568		4,853		21,421		(3,549		)	17,872		39	3/14/08	(A)
	Union Cross Bldg. I		Winston-Salem, NC		2,050				852				759		3,905		27		5,543		—		5,543		(967		)	4,576		39	8/30/07	(A)
	Union Cross Bldg. II		Winston-Salem, NC		6,255				1,658				1,576		12,271		65		15,570		—		15,570		(2,723		)	12,847		39	8/30/07	(A)
	Lakeside Office Center		Dallas, TX		8,743				4,328				817		10,497		1,140		16,782		648		17,430		(2,877		)	14,553		39	3/5/08	(A)
	Thames Valley		Reading, UK		—				6,672				979		13,195		80		20,926		7		20,933		(2,407		)	18,526		39	3/20/08	(A)
	Enclave on the Lake		Houston, TX		—				4,056				10,230		20,823		1,197		36,306		1,687		37,993		(6,761		)	31,232		39	7/1/08	(A)
	Fairforest Bldg. 1		Spartanburg, SC		—				335				107		2,509		6		2,957		—		2,957		(382		)	2,575		39	8/30/07	(A)
	Fairforest Bldg. 2		Spartanburg, SC		—				396				122		4,654		2		5,174		200		5,374		(760		)	4,614		39	8/30/07	(A)
	Fairforest Bldg. 3		Spartanburg, SC		—				608				231		4,695		14		5,548		—		5,548		(727		)	4,821		39	8/30/07	(A)
	Fairforest Bldg. 4		Spartanburg, SC		—				661				331		4,566		10		5,568		3,004		8,572		(747		)	7,825		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 1		Spartanburg, SC		—				704				219		4,347		8		5,278		2		5,280		(672		)	4,608		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 2		Spartanburg, SC		—				1,131				363		3,008		24		4,526		—		4,526		(549		)	3,977		39	9/24/07	(A)
					Acquisition Costs																Improve-		Total		Accumulated			Net		Deprecia-	Date of
																					ments		Cost		Depreciation			Investments		tion	Acquisition
																					Subsequent				and			in Real		Life(1)	(A)/
																					to Purchase				Amortization			Estate			Construction
	Property		Location		Encumbrance				Land				Site		Building		Tenant		Total		Date										(C)(2)
					Net								Improve-		and		Improve-
													ments		Improve-		ments
															ments
	Highway 290 Commerce Pk Bldg. 5		Spartanburg, SC		—				421				162		800		4		1,387		109		1,496		(180		)	1,316		39	8/30/07	(A)
	Highway 290 Commerce Pk Bldg. 6		Spartanburg, SC		—				572				176		3,012		—		3,760		554		4,314		(520		)	3,794		39	11/1/07	(A)
	Highway 290 Commerce Pk Bldg. 7		Spartanburg, SC		—				1,233				510		2,949		1		4,693		362		5,055		(646		)	4,409		39	8/30/07	(A)
	Orchard Business Park 2		Spartanburg, SC		—				173				62		526		—		761		35		796		(128		)	668		39	8/30/07	(A)
	Greenville/Spartanburg Ind. Pk		Spartanburg, SC		—				460				200		2,584		2		3,246		240		3,486		(495		)	2,991		39	8/30/07	(A)
	Community Cash Complex 1		Spartanburg, SC		—				867				175		1,622		—		2,664		428		3,092		(782		)	2,310		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		22		1,455		(209		)	1,246		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)
	Avion III & IV		Washington Metro, DC		19,885				6,810				1,179		30,004		1,105		39,098		202		39,300		(5,484		)	33,816		39	11/18/08	(A)
	Maskew Retail Park		Peterborough, UK		23,160				17,612				1,134		28,494		—		47,240		89		47,329		(4,181		)	43,148		39	10/23/08	(A)
	13201 Wilfred Lane		Minneapolis, MN		—				2,274				412		11,049		129		13,864		—		13,864		(1,463		)	12,401		39	6/29/09	(A)
3011, 3055 & 3077 Comcast Place		East Bay, CA		—				7,013				998		21,858		7,739		37,608		—		37,608		(5,176		)	32,432		39	7/1/09	(A)
140 Depot Street		Boston, MA		—				3,560				1,172		11,898		158		16,788		—		16,788		(1,763		)	15,025		39	7/31/09	(A)
12650 Ingenuity Drive		Orlando, FL		11,686				3,520				397		13,330		1,517		18,764		198		18,962		(2,171		)	16,791		39	8/5/09	(A)
Crest Ridge Corporate Center I		Minneapolis, MN		—				4,624				335		16,024		3,174		24,157		28		24,185		(3,263		)	20,922		39	8/17/09	(A)
West Point Trade Center		Jacksonville, FL		—				5,843				2,925		16,067		368		25,203		1,410		26,613		(2,765		)	23,848		39	12/30/09	(A)
5160 Hacienda Drive		East Bay, CA		—				8,100				740		20,776		1,693		31,309		—		31,309		(2,743		)	28,566		39	4/8/10	(A)
10450 Pacific Center Court		San Diego, CA		—				5,000				724		20,410		1,061		27,195		—		27,195		(2,542		)	24,653		39	5/7/10	(A)
225 Summit Avenue		Northern, NJ		—				7,100				978		25,460		2,240		35,778		—		35,778		(3,268		)	32,510		39	6/21/10	(A)
One WaySide Road		Boston, MA		24,723				7,500				517		37,870		2,442		48,329		226		48,555		(4,615		)	43,940		39	6/24/10	(A)
100 Tice Blvd.		Northern, NJ		41,121				7,300				1,048		47,114		2,231		57,693		—		57,693		(4,814		)	52,879		39	9/28/10	(A)
Ten Parkway North		Chicago, IL		11,777				3,500				276		15,764		1,368		20,908		12		20,920		(1,767		)	19,153		39	10/12/10	(A)
Pacific Corporate Park		Washington, DC		—				21,128				47,023		46,992		14,810		129,953		51		130,004		(18,524		)	111,480		39	11/15/10	(A)
4701 Gold Spike Drive		Dallas, TX		10,154				3,500				384		14,057		96		18,037		—		18,037		(1,290		)	16,747		39	10/27/10	(A)
1985 International Way		Hebron, KY		7,055				2,200				396		10,544		33		13,173		45		13,218		(974		)	12,244		39	10/27/10	(A)
3660 Deerpark Boulevard		Jacksonville, FL		7,294				2,400				438		10,036		67		12,941		—		12,941		(965		)	11,976		39	10/27/10	(A)
Tolleson Commerce Park II		Phoenix, AZ		4,386				2,200				567		4,753		62		7,582		187		7,769		(633		)	7,136		39	10/27/10	(A)
100 Kimball Drive		Northern, NJ		—				8,800				1,270		39,400		2,946		52,416		—		52,416		(4,207		)	48,209		39	12/10/10	(A)
70 Hudson Street		New York City Metro, NJ		117,666				55,300				8,885		56,193		3,470		123,848		—		123,848		(7,371		)	116,477		39	4/11/11	(A)
90 Hudson Street		New York City Metro, NJ		106,815				56,400				9,968		76,909		3,198		146,475		783		147,258		(8,435		)	138,823		39	4/11/11	(A)
Millers Ferry Road		Dallas, TX		—				5,835				8,755		18,412		688		33,690		150		33,840		(2,824		)	31,016		39	6/2/11	(A)
Sky Harbor Operations Center		Phoenix, AZ		—				—				20,848		19,677		4,565		45,090		—		45,090		(4,932		)	40,158		39	9/30/11	(A)
				Acquisition Costs																Improve-		Total		Accumulated			Net		Deprecia-	Date of
																				ments		Cost		Depreciation			Investments		tion	Acquisition
																				Subsequent				and			in Real		Life(1)	(A)/
																				to Purchase				Amortization			Estate			Construction
Property		Location		Encumbrance				Land				Site		Building		Tenant		Total		Date										(C)(2)
				Net								Improve-		and		Improve-
												ments		Improve-		ments
														ments
Aurora Commerce Center Bldg. C		Denver, CO		—				2,600				1,125		17,467		254		21,446		—		21,446		(1,167		)	20,279		39	11/30/11	(A)
Sabal Pavilion		Tampa, FL		—				3,900				1,394		10,734		1,656		17,684		215		17,899		(1,094		)	16,805		39	12/30/11	(A)
Atwater		Philadelphia, PA		—				6,851				11,583		29,113		30,719		78,266		1		78,267		(4,078		)	74,189		39	10/27/11	(C)
2400 Dralle Road		Chicago, IL		—				11,706				4,732		38,175		912		55,525		—		55,525		(2,433		)	53,092		39	3/20/12	(A)
Midwest Commerce Center I		Kansas City, KS		—				6,665				10,517		36,170		597		53,949		—		53,949		(2,272		)	51,677		39	8/16/12	(A)
20000 S. Diamond Lake Road		Minneapolis, MN		6,388				1,976				884		12,041		55		14,956		—		14,956		(413		)	14,543		39	11/7/12	(A)
Gateway at Riverside		Baltimore, MD		—				6,940				6,597		26,917		475		40,929		—		40,929		(1,274		)	39,655		39	11/30/12	(A)
Gateway II at Riverside		Baltimore, MD		—				2,318				253		—		—		2,571		—		2,571		(18		)	2,553		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		(823		)	22,149		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		(908		)	34,875		39	12/28/12	(A)
Carpenter Corporate Center I & II		Dallas, TX		—				5,901				1,160		31,200		3,588		41,849		53		41,902		(515		)	41,387		39	7/31/13	(A)
1200 Woods Chapel Road		Spartenburg, SC		—				1,560				2,373		4,925		58		8,916		—		8,916		(98		)	8,818		39	8/8/13	(A)
1400 Perimeter Park Drive		Raleigh, NC		2,446				765				541		3,320		332		4,958		—		4,958		(127		)	4,831		39	3/1/13	(A)
3900 North Paramount Parkway		Raleigh, NC		8,073				861				525		12,474		688		14,548		—		14,548		(349		)	14,199		39	3/1/13	(A)
3900 South Paramount Parkway		Raleigh, NC		8,075				1,062				650		13,842		552		16,106		—		16,106		(383		)	15,723		39	3/1/13	(A)
Point West I		Dallas, TX		11,041				3,616				1,888		21,811		1,339		28,654		—		28,654		(868		)	27,786		39	3/1/13	(A)
22535 Colonial Pkwy		Houston, TX		8,336				1,336				992		12,499		862		15,689		—		15,689		(435		)	15,254		39	3/1/13	(A)
Atrium I		Columbus, OH		22,516				4,131				1,990		28,589		3,559		38,269		508		38,777		(1,241		)	37,536		39	3/1/13	(A)
Easton III		Columbus, OH		6,466				2,164				1,591		11,944		1,246		16,945		71		17,016		(519		)	16,497		39	3/1/13	(A)
Landings I		Cincinnati, OH		17,195				1,689				1,229		21,824		1,529		26,271		—		26,271		(700		)	25,571		39	3/1/13	(A)
Landings II		Cincinnati, OH		15,152				1,434				877		18,637		1,009		21,957		31		21,988		(708		)	21,280		39	3/1/13	(A)
McAuley Place		Cincinnati, OH		13,472				1,467				637		19,996		1,901		24,001		462		24,463		(717		)	23,746		39	3/1/13	(A)
Miramar I		Ft. Lauderdale, FL		9,607				11,572				2,280		3,654		2,457		19,963		—		19,963		(451		)	19,512		39	3/1/13	(A)
Miramar II		Ft. Lauderdale, FL		12,944				9,841				1,857		13,949		2,056		27,703		—		27,703		(928		)	26,775		39	3/1/13	(A)
Northpoint III		Orlando, FL		10,784				3,157				1,510		15,081		1,165		20,913		—		20,913		(518		)	20,395		39	3/1/13	(A)
Celebration Office Center		Orlando, FL		9,296				4,892				1,529		8,499		657		15,577		—		15,577		(440		)	15,137		39	3/1/13	(A)
Goodyear Crossing II		Phoenix, AZ		20,583				7,471				2,919		46,348		492		57,230		—		57,230		(1,214		)	56,016		39	3/1/13	(A)
Norman Pointe I		Minneapolis, MN		22,790				3,369				1,089		25,906		1,615		31,979		352		32,331		(977		)	31,354		39	3/1/13	(A)
Norman Pointe II		Minneapolis, MN		25,377				1,483				1,124		36,298		4,818		43,723		1,120		44,843		(2,021		)	42,822		39	3/1/13	(A)
				681,200				444,024				216,920		1,450,387		133,607		2,244,938		25,284		2,270,222		(195,778		)	2,074,444
_________
-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,
		2013				2012				2011
Balance, beginning of the year		$	1,804,885			$	1,514,633			$	1,107,185
Acquisitions		52,531				230,919				387,159
Disposition		(27,259		)		(3,715		)		(1,375		)
Improvements		10,056				2,688				9,282
Improvements—Variable Interest Entity		(72,742		)		60,360				12,382
Transfer from joint venture		502,751				—				—
Balance, end of the year		$	2,270,222			$	1,804,885			$	1,514,633
Accumulated depreciation related to investments in real estate (in thousands):
		December 31,
		2013				2012				2011
Balance, beginning of year		$	(132,129	)		$	(88,084	)		$	(51,292	)
Additions		(65,565		)		(44,402		)		(36,863		)
Dispositions		1,916				357				71
Balance, end of the year		$	(195,778	)		$	(132,129	)		$	(88,084	)
The aggregate gross cost of our investments in real estate for U.S. Federal income tax purposes approximated $2.6 billion as of December 31, 2013.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
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 generally accepted accounting principles ("U.S. 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 significant intercompany accounts and transactions are eliminated in consolidation.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements, in conformity with U.S. 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 Variable Interest Entity ("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 13 "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	'
	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	'
	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 three reportable segments, a Domestic Industrial segment, a Domestic Office segment and an International Office/Retail segment, 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
	In a period in which a property 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 property 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 asset;
	•	the asset is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such assets;
	•	an active program to locate a buyer and other actions required to complete the plan to sell the asset has been initiated;
	•	the sale of the asset is probable and the transfer of the asset is expected to qualify for recognition as a completed sale within one year;
	•	the asset 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 asset, 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 is 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 and 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. 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
	Prepaid expenses and other assets consisted of the following as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013		2012
	Prepaid insurance and real estate taxes	$	2,699	$	2,014
	Tenant lease inducement, net	3,274		—
	Acquisition deposit	2,750		—
	Asset derivatives	5,211		—
	Other	2,823		1,764
	Total	$	16,757	$	3,778
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 $14.5 million and $17.8 million as security for such leases at December 31, 2013 and 2012, 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.
	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 included legal and consulting costs resulting from the amendment of our management structure and various corporate relationships, including with respect to our relations with the former investment advisor, exploring and implementing strategic alternatives for information technology, office space and personnel needs, among other expenses. 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 our 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 our 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. Even if we qualify for taxation as a REIT, we may be subject to certain state and local taxes on our income and property and to U.S. federal income and excise taxes on our undistributed taxable income, if any.
	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 did not have a liability for any unrecognized benefits as of December 31, 2013. The tax years from 2008 through 2012 remain open to examination by the taxing jurisdictions to which the company is subject.
	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 $0.3 million, $0.3 million and 0.5 million during the years ended December 31, 2013, 2012 and 2011, respectively. The United Kingdom taxes real property operating results at a statutory rate of 20%. The United Kingdom taxable losses to date have generated a deferred tax asset of approximately $0.5 million consisting of these net operating loss carryforwards. We have provided for a full valuation allowance of $0.5 million as of December 31, 2013 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.
	During 2010, we made taxable REIT subsidiary elections for two held for sale property subsidiaries. The elections, effective for the tax year beginning January 1, 2010 and future years, were made pursuant to section 856(i) of the Internal Revenue Code. In the third quarter of 2011 both properties were sold and the TRS's were subsequently liquidated. The taxable income for the TRS's for the year ended December 31, 2011 was $345,000 and accordingly, we recorded a provision for income taxes of $122,000. No amounts related to the TRSs were recorded in 2012 and 2013.
	ASC 740 requires that entities taxed as corporations recognize 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. Since the Company has liquidated its TRS and believes it has satisfied all requisite REIT compliance tests, no amount of deferred tax asset or liability has been recorded as of December 31, 2013, other than as mentioned above regarding United Kingdom tax liabilities.
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, 2013, 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, accounts 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.
Reclassifications	'
	Reclassifications
	To better present our consolidated balance sheets and consolidated statements of operations we have chosen to combine certain line items together instead of disclosing them as separate line items.
	In addition, we have reclassified certain amounts in our previously issued balance sheets and statements of operations to conform to current period presentations. On our balance sheet as of December 31, 2012, we have reclassified $8.2 million related to prepaid rents from "Accounts Payable, Accrued Expenses and Other Liabilities" to "Prepaid Rent and Security Deposits", which represents a newly created line item.
	We have reclassified amounts related to property management general and administrative expense for the years ended December 31, 2012 and 2011 of $1.2 million and $1.0 million , respectively, from "General and Administrative" expense to "Property Operating" expense, which represents a newly created line item.
	None of the reclassifications reflect corrections of any amounts.
New Accounting Standards	'
	New Accounting Standards
	In January 2013, the FASB issued ASU 2013-1, Clarifying the Scope of Disclosures About Offsetting Assets and Liabilities, which clarifies which instruments and transactions are subject to the offsetting disclosure requirements established by ASU 2011-11. The ASU clarifies that the scope applied to derivatives accounted for in accordance with the Derivatives and Hedging topic of the Codification, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with the Offsetting Presentation section of the Balance Sheet topic or the Presentation section of the Derivatives and Hedging topic or subject to an enforceable master netting arrangement or similar agreement.
	In February 2013, the FASB issued ASU No. 2013-2, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-2"). This update requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income.
	The ASU amendment and the subsequent clarification of the amendment are effective for periods beginning on or after January 1, 2013, and must be shown for all periods shown on the balance sheet. The adoption of these ASU amendments did not have a material effect on our financial condition, results of operations, or disclosures.
	In July 2013, the FASB issued ASU No. 2013-10, Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes (Topic 815), which permits for the inclusion of the Fed Funds Effective Swap Rate (OIS) as a U.S. benchmark interest rate for hedge accounting purposes, in addition to interest rates on direct Treasury obligations of the U.S. government (UST), and the London Interbank Offered Rate (LIBOR). The ASU amendments also remove the restriction on using different benchmark interest rates for similar hedges. ASU No. 2013-10 is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The adoption of this ASU did not have a material effect on our financial condition, results of operations, or disclosures.

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Schedule Of Real Estate Investments	'
	Our investments in real estate is 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 and 25 years
	Tenant Improvements		Shorter of the useful lives or the terms of the related leases
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure	'
	ther assets consisted of the following as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013		2012
	Prepaid insurance and real estate taxes	$	2,699	$	2,014
	Tenant lease inducement, net	3,274		—
	Acquisition deposit	2,750		—
	Asset derivatives	5,211		—
	Other	2,823		1,764
	Total	$	16,757	$	3,778

Investment_in_Real_Estate_Acti1

Investment in Real Estate Activity (Tables)	12 Months Ended
	Dec. 31, 2013
Real Estate [Abstract]	'
Schedule of Real Estate Properties	'
	Property		Market				Date of		Purchase				Net			% Leased at 12/31/13
							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
	Property		Market				Date of		Purchase				Net			% Leased at 12/31/13
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)				Property Type
	2400 Dralle Road		Chicago		IL		3/20/12		$	64,250			1,350,000			100%	Industrial
	Midwest Commerce Center I		Kansas City		KS		8/16/12		62,950				1,107,000			100%	Industrial
	20000 S. Diamond Lake Road		Minneapolis		MN		11/7/12		18,500				280,577			100%	Industrial
	Gateway at Riverside		Baltimore		MD		11/30/12		49,229				800,797			100%	Industrial
	701 & 801 Charles Ewing Blvd		Princeton		NJ		12/28/12		28,310				110,765			100%	Office
	Mid-Atlantic Distribution Center - Bldg A		Baltimore		MD		12/28/12		43,150				672,000			100%	Industrial
	Total 2012 Wholly-Owned Property Acquisitions								$	266,389			4,321,139
	As of December 31, 2013 and 2012, we owned the following number of properties through unconsolidated entities:
				Number of Properties
				December 31,
		Ownership %		2013			2012
	Duke JV	80.00%		18			37
	European JV	80.00%		9			6
	UK JV	80.00%		3			3
	Afton Ridge	90.00%		—			1
	CBRE Strategic Partners Asia	5.07%		3			7
				33			54
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, 2012 (in thousands):
		2400				Midwest				20000 S.				Gateway			701 & 702		Mid-Atlantic		Total
		Dralle				Commerce				Diamond				at			Charles		Distribution
		Road				Center I				Lake Rd				Riverside			Ewing Bldg		Center-Bldg. A
	Land	$	16,438			$	17,182			$	2,860			$	16,108		$	6,208	$	10,611	$	69,407
	Building and Tenant Improvements	39,087				36,767				12,096				27,393			16,574		25,165		157,082
	Acquired In-Place Lease Value (1)	6,645				7,172				2,622				6,001			5,117		4,811		32,368
	Above Market Lease Value (1)	2,080				1,829				922				293			411		2,563		8,098
	Total Acquired Assets	64,250				62,950				18,500				49,795			28,310		43,150		266,955
	Below Market Lease Value (2)	—				—				—				(566		)	—		—		(566		)
	Net Assets Acquired	$	64,250			$	62,950			$	18,500			$	49,229		$	28,310	$	43,150	$	266,389
	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 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):
		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.
Pro Forma Operations	'
	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
	The following table summarizes the combined results from operations for the 2012 wholly-owned property acquisitions from their respective dates of acquisition through December 31, 2012 (in thousands):
	Revenues	$	6,557
	Net Income	$	3,363
	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
		Year Ended December 31,
		2013				2012
	Revenues from Continuing Operations	$	263,566			$	246,050
	Net Operating Income from Continuing Operations	46,337				18,384
	Net Income	11,416				38,602
	Basic and Diluted Net Income per Share	$	0.05			$	0.16
	Weighted Average Common Shares Outstanding - Basic and Diluted	242,379,680				248,154,277
	Unaudited pro forma results, assuming the 2013 Acquisitions had occurred as of January 1, 2012 and the 2012 Acquisitions had occurred as of January 1, 2011, are presented below. Non-recurring acquisition costs totaling $2.7 million are included in the year ended December 31, 2012 as an operating expense. Non-recurring acquisition costs totaling $7.8 million are excluded from the 2012 pro forma results and are included in the year ended December 31, 2011 as an operating expense (in thousands, except share data):
		Year Ended December 31,
		2012				2011
	Revenues from Continuing Operations	$	259,367			$	180,316
	Net Operating Income from Continuing Operations	23,092				24,260
	Net Income	43,480				1,982
	Basic and Diluted Net Income per Share	$	0.17			$	0.01
	Weighted Average Common Shares Outstanding - Basic and Diluted	248,154,277				192,042,918
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]	'
	The following table summarizes the income and expense components that comprise discontinued operations for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Revenues:
	Rental	$	1,755			$	2,311			$	3,256
	Tenant Reimbursements	275				372				569
	Total Revenues	2,030				2,683				3,825
	Expenses:
	Property Operating	248				338				552
	Real Estate Taxes	197				133				279
	Investment Management Fee	—				—				96
	Depreciation and Amortization	607				1,270				1,062
	Total Expenses	1,052				1,741				1,989
	Interest and Other (Expense) Income	(80		)		283				(12		)
	Interest Expense	(420		)		(505		)		(474		)
	Loss on Early Extinguishment of Debt	(96		)		—				—
	Provision for Income Taxes	—				—				(123		)
	Total Other Expenses	(596		)		(222		)		(609		)
	Income from Discontinued Operations	382				720				1,227
	Gain (Loss) from Sale of Real Estate	2,759				(413		)		301
	Total Income from Discontinued Operations	$	3,141			$	307			$	1,528
	The following table summarizes properties sold during the years ended December 31, 2013, 2012 and 2011 (in thousands):
	Property		Market				Date of Disposition		Gross Sales
									Price
	2011 Dispositions
	Orchard Park I		Spartanburg		SC		4/5/11		$	1,275
	Rickenbacker II and Rickenbacker III		Groveport		OH		8/12/11		22,639
									$	23,914
	2012 Dispositions
	Cherokee Corporate Park (1)		Spartanburg		SC		7/9/12		$	3,125
	2013 Dispositions
	Albion Mills Retail Park		Wakefield		United Kingdom		11/29/13		$	17,253
	Summit Distribution Center		Salt Lake City		UT		12/20/13		13,800
									$	31,053

Investments_in_Unconsolidated_1

Investments in Unconsolidated Entities (Tables)	12 Months Ended
	Dec. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]	'
Schedule of Real Estate Properties	'
	Property		Market				Date of		Purchase				Net	% Leased at 12/31/13
							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
	Property		Market				Date of		Purchase				Net	% Leased at 12/31/13
							Acquisition		Price ('000s)				Rentable
													Square
													Feet (unaudited)		Property Type
	2400 Dralle Road		Chicago		IL		3/20/12		$	64,250			1,350,000	100%	Industrial
	Midwest Commerce Center I		Kansas City		KS		8/16/12		62,950				1,107,000	100%	Industrial
	20000 S. Diamond Lake Road		Minneapolis		MN		11/7/12		18,500				280,577	100%	Industrial
	Gateway at Riverside		Baltimore		MD		11/30/12		49,229				800,797	100%	Industrial
	701 & 801 Charles Ewing Blvd		Princeton		NJ		12/28/12		28,310				110,765	100%	Office
	Mid-Atlantic Distribution Center - Bldg A		Baltimore		MD		12/28/12		43,150				672,000	100%	Industrial
	Total 2012 Wholly-Owned Property Acquisitions								$	266,389			4,321,139
	As of December 31, 2013 and 2012, we owned the following number of properties through unconsolidated entities:
				Number of Properties
				December 31,
		Ownership %		2013			2012
	Duke JV	80.00%		18			37
	European JV	80.00%		9			6
	UK JV	80.00%		3			3
	Afton Ridge	90.00%		—			1
	CBRE Strategic Partners Asia	5.07%		3			7
				33			54
Investments in Unconsolidated Entities	'
	Investments in unconsolidated entities at December 31, 2013 and 2012 consist of the following (in thousands):
		December 31,
		2013				2012
	Duke JV	$	292,548			$	344,511
	European JV	174,272				108,725
	UK JV	36,794				37,487
	Afton Ridge(1)	1,512				17,008
	CBRE Strategic Partners Asia	9,676				8,098
		$	514,802			$	515,829
	__________
	-1
Summary of Investments in Unconsolidated Entities	'
	The following is a summary of the investments in unconsolidated entities for the years ended December 31, 2013 and 2012 (in thousands):
		December 31,
		2013				2012
	Investment Balance, January 1,	$	515,829			$	537,631
	Contributions	210,745				45,568
	Company's Equity in Net Income (including adjustments for basis differences)	12,111				3,959
	Other Comprehensive Income of Unconsolidated Entities	7,293				1,144
	Conversion of Duke JV Equity Investment to Controlling Interest	(139,558		)		—
	Distributions	(91,618		)		(72,473		)
	Investment Balance, December 31,	$	514,802			$	515,829
Consolidated Balance Sheet	'
	The combined balance sheets of our investments in unconsolidated entities as of December 31, 2013 and 2012 are as follows (in thousands):
		December 31,
		2013				2012
	Assets
	Investments in Real Estate (1)	$	990,830			$	1,240,196
	Other Assets	103,671				231,173
	Total Assets	$	1,094,501			$	1,471,369
	Liabilities and Equity
	Secured Notes Payable, net	$	233,412			$	620,457
	Other Liabilities	36,224				56,312
	Total Liabilities	269,636				676,769
	CSP Equity	514,802				515,829
	Other Investors' Equity	310,063				278,771
	Total Liabilities and Equity	$	1,094,501			$	1,471,369
	__________
	-1	2013 amounts include 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. 2012 amounts include REIT Basis Adjustments for costs incurred by the Company outside of both the Duke JV and the Afton Ridge joint ventures.
	Consolidated Balance Sheet of European JV as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013				2012
	Assets
	Investments in Real Estate	$	343,642			$	208,786
	Other Assets	35,872				23,036
	Total Assets	$	379,514			$	231,822
	Liabilities and Equity
	Secured Notes Payable, net	$	153,651			$	82,894
	Other Liabilities	8,023				13,022
	Total Liabilities	161,674				95,916
	CSP Equity	174,272				108,725
	Other Investors' Equity	43,568				27,181
	Total Liabilities and Equity	$	379,514			$	231,822
Consolidated Statement of Operations	'
	The combined statements of operations for our investments in unconsolidated entities for the years ended December 31, 2013, 2012 and 2011 are as follows (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Total Revenue	$	131,166			$	153,131			$	128,908
	Operating Expenses	29,917				50,204				72,112
	Net Operating Income	101,249				102,927				56,796
	Acquisition and Related Expense	4,778				686				—
	Depreciation and Amortization	41,457				68,714				57,303
	Interest Expense	13,673				26,516				22,927
	Net Income (Loss) from Continuing Operations	41,341				7,011				(23,434		)
	Income from Discontinued Operations	(841		)		—				—
	Gain (Loss) from Sales of Real Estate	3,628				—				—
	Net Income (Loss)	44,128				7,011				(23,434		)
	Company Share in Net Income	12,228				4,088				3,726
	Adjustments for REIT basis	(117		)		(129		)		(136		)
	CSP Equity in Net Income	$	12,111			$	3,959			$	3,590
	Consolidated Statements of Operations of European JV for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Total Revenue	$	19,581			$	11,947			$	6,430
	Operating Expenses	3,631				1,824				2,042
	Net Operating Income	15,950				10,123				4,388
	Acquisition and Related Expense	4,778				39				—
	Depreciation and Amortization	7,636				5,388				3,103
	Interest Expense	2,400				462				—
	Net Income from Continuing Operations	1,136				4,234				1,285
	Income from Discontinued Operations	—				—				—
	Gain (Loss) from Sales of Real Estate	—				—				—
	Net Income	1,136				4,234				1,285
	Company Share in Net Income	909				3,387				1,029
	Adjustments for REIT basis	—				—				—
	CSP Equity in Net Income	$	909			$	3,387			$	1,029

Deferred_Leasing_Costs_and_Int1

Deferred Leasing Costs and Intangible Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
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 and acquired in-place leases and intangible liabilities, including acquired below-market leases and acquired above-market ground lease obligations (in thousands):
		December 31,
		2013			2012
	Deferred Leasing Costs and Intangible Assets, Net:
	Deferred Leasing Costs	$	11,243		$	6,350
	Accumulated Amortization	(3,016		)	(1,705		)
	Deferred Leasing Costs, Net	8,227			4,645
	Above-Market Leases	77,180			55,219
	Accumulated Amortization	(33,577		)	(23,364		)
	Above-Market Leases, Net	43,603			31,855
	In-Place Leases	321,776			252,501
	Accumulated Amortization	(124,734		)	(89,943		)
	In-Place Leases, Net	197,042			162,558
	Total Deferred Leasing Costs and Intangible Assets, Net	$	248,872		$	199,058
	Intangible Liabilities, Net:
	Below-Market Leases	$	49,751		$	43,659
	Accumulated Amortization	(23,022		)	(19,077		)
	Below-Market Leases, Net	26,729			24,582
	Above-Market Ground Lease Obligation	1,501			1,501
	Accumulated Amortization	(160		)	(89		)
	Above-Market Ground Lease Obligation, Net	1,341			1,412
	Total Intangible Liabilities, Net	$	28,070		$	25,994
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, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013			2012			2011
	Deferred Leasing Costs(1)	$	1,314		$	714		$	468
	Above-Market Leases(2)	10,374			7,658			6,385
	In-Place Leases(1)	36,653			28,826			23,987
	Below-Market Leases(2)	(3,972		)	(5,173		)	(4,254		)
	Above-Market Ground Lease Obligation(3)	(71		)	(71		)	(18		)
	__________
	-1	The amortization of deferred leasing costs and in-place leases are recorded to depreciation and amortization expense in the 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 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 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, 2013 (in thousands):
		Intangible Assets									Intangible Liabilities
		Deferred Leasing Costs			Acquired			Acquired			Acquired		Above-Market
					Above-Market			In-Place			Below-Market		Ground Lease
					Leases			Leases			Leases		Obligations
	2014	$	1,318		$	9,496		$	36,736		$	4,129	$	71
	2015	1,117			9,082			34,408			3,960		71
	2016	1,018			5,540			27,619			3,381		71
	2017	958			4,399			23,182			2,889		71
	2018	915			3,897			20,278			2,570		71
	Thereafter	2,901			11,189			54,819			9,800		986
		$	8,227		$	43,603		$	197,042		$	26,729	$	1,341

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Notes Payable Secured by Real Property	'
	Secured notes payable are summarized as follows (in thousands):
			Stated		Effective Interest Rate (1)		Maturity Date		December 31,
	Property		Interest Rate						2013			2012
	Avion Midrise III & IV (2)		5.52%		7.00%		4/1/14		$	19,979		$	20,464
	Maskew Retail Park - Swapped to Fixed(3)		5.68%		5.68%		8/10/14		23,161			22,698
	12650 Ingenuity Drive		5.62%		7.50%		10/1/14		11,842			12,272
	Bolingbrook Point III		5.26%		5.26%		1/1/15		7,900			7,900
	One Wayside Road		5.66%		5.25%		8/1/15		13,352			13,745
	One Wayside Road		5.92%		5.25%		8/1/15		11,169			11,464
	Lakeside Office Center		6.03%		6.03%		9/1/15		8,743			8,862
	Deerfield Commons I		5.23%		5.23%		12/1/15		9,290			9,442
	Celebration Office Center III(4)(5)		4.25%		2.50%		12/1/15		8,998			—
	22535 Colonial Pkwy(4)(5)		4.25%		2.50%		12/1/15		8,051			—
	Northpoint III(4)(5)		4.25%		2.50%		12/1/15		10,419			—
	Goodyear Crossing II(4)(5)		4.25%		2.50%		12/1/15		19,891			—
	3900 North Paramount Parkway(4)(5)		4.25%		2.50%		12/1/15		7,815			—
	3900 South Paramount Parkway(4)(5)		4.25%		2.50%		12/1/15		7,815			—
	1400 Perimeter Park Drive(4)(5)		4.25%		2.50%		12/1/15		2,368			—
	Miramar I(4)(5)		4.25%		2.50%		12/1/15		9,283			—
	Miramar II(4)(5)		4.25%		2.50%		12/1/15		12,503			—
	70 Hudson Street		5.65%		5.15%		4/11/16		116,100			117,981
	Point West I - Swapped to Fixed(4)		3.41%		3.41%		12/6/16		11,041			—
	100 Tice Blvd		5.97%		4.38%		9/15/17		19,544			20,094
	100 Tice Blvd		5.97%		4.38%		9/15/17		19,543			20,093
	4701 Gold Spike Drive(6)		4.45%		4.45%		3/1/18		10,154			10,342
	1985 International Way(6)		4.45%		4.45%		3/1/18		7,055			7,186
	3770 Deerpark Boulevard(6)		4.45%		4.45%		3/1/18		7,294			7,428
	Tolleson Commerce Park II(6)		4.45%		4.45%		3/1/18		4,386			4,467
	20000 S. Diamond Lake Road(6)		4.45%		4.45%		3/1/18		6,388			—
	Atrium I - Swapped to Fixed(4)		3.78%		3.78%		5/31/18		22,516			—
	McAuley Place(4)		3.98%		3.50%		9/1/18		13,230			—
	Easton III - Swapped to Fixed(4)		3.95%		3.95%		1/31/19		6,466			—
	90 Hudson Street		5.66%		5.26%		5/1/19		104,928			106,465
	Fairforest Bldg. 6		5.42%		6.50%		6/1/19		2,086			2,402
	North Rhett I		5.65%		6.50%		8/1/19		2,405			2,827
	Kings Mountain II		5.47%		6.50%		1/1/20		4,043			4,589
	North Rhett II		5.20%		6.50%		10/1/20		1,628			1,822
			Stated		Effective Interest Rate (1)		Maturity Date		December 31,
	Property		Interest Rate						2013			2012
	Mount Holly Bldg.		5.20%		6.50%		10/1/20		1,628			1,822
	Orangeburg Park Bldg.		5.20%		6.50%		10/1/20		1,656			1,853
	Kings Mountain I		5.27%		6.50%		10/1/20		1,411			1,578
	Ten Parkway North		4.75%		4.75%		1/1/21		11,777			12,072
	Union Cross Bldg. II		5.53%		6.50%		6/1/21		6,471			7,149
	Union Cross Bldg. I		5.50%		6.50%		7/1/21		2,124			2,344
	Norman Pointe I(4)		5.24%		3.50%		10/1/21		20,512			—
	Norman Pointe II(4)		5.24%		3.50%		10/1/21		22,583			—
	The Landings I(4)		5.24%		3.50%		10/1/21		15,437			—
	The Landings II(4)		5.24%		3.50%		10/1/21		13,616			—
	Fairforest Bldg. 5		6.33%		6.50%		2/1/24		8,277			8,840
	North Rhett IV		5.80%		6.50%		2/1/25		8,414			8,935
	Thames Valley Five - Swapped to Fixed(7)		6.42%		6.42%		5/29/13		—			9,160
	Sabal Pavilion(8)		6.38%		3.00%		8/1/13		—			14,700
	Albion Mills Retail Park - Swapped to Fixed(9)		5.25%		5.25%		10/10/13		—			9,288
	Summit Distribution Center(10)		4.45%		4.45%		3/1/18		—			6,506
	Total Secured Notes Payable								665,292			496,790
	Plus Premium								17,294			7,555
	Less Discount								(1,386		)	(2,113		)
	Total Secured Notes Payable, Net								$	681,200		$	502,232
	__________
	-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 in January 2014. See Note 19, Subsequent Events, for more information.
	-3	The loan is subject to certain financial covenants (interest coverage and loan to value).
-4	The loans were assumed in connection with the acquisition of Duke Realty's 20% interest in the 17 properties held by the Duke JV on March 1, 2013 and were recorded at estimated fair value which included a $13.5 million total premium.
-5	These nine loans are cross-collateralized.
-6	These five loans are cross-collateralized.
-7	The loan was paid off in full on May 29, 2013.
-8	The loan was paid off in full on May 1, 2013.
-9	This loan was presented at fair value. The fair value adjustment to its cost basis was $(85) at December 31, 2012. We paid off this loan in full on October 9, 2013.
-10	This loan was paid off in full on December 20, 2013.
The terms of our Unsecured Term Loan Facilities as of December 31, 2013 are set forth in the table below:
		Unswapped Interest Rate		Effective Interest Rate (1)		Maturity Date		Outstanding Balance
Term Loan Facility
WF Term Loan #2 (2)		LIBOR + 1.50%		2.49%		3/7/18		$	200,000
WF Term Loan #3 (2)		LIBOR + 1.50%		3.12%		1/15/19		200,000
TD Term Loan (3)		LIBOR + 1.75%		3.28%		3/6/20		50,000
Capital One Term Loan (2)		LIBOR + 1.75%		4.32%		1/31/21		120,000
Total Unsecured Term Loan Facilities								$	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, 2013, the applicable LIBOR rate was 0.165% for these loans.
-3	As of December 31, 2013, the applicable LIBOR rate was 0.16875% for this loan.
Unsecured Revolving Credit Facility
The terms of our unsecured revolving credit facility are set forth in the table below:
	December 31,
	2013				2012
	(in thousands)
Outstanding Borrowings	$	170,044			$	265,000
Remaining Borrowing Capacity	679,956				435,000
Total Borrowing Capacity	$	850,000			$	700,000
Interest Rate(1)	1.47		%		1.82		%
Facility or Unused Fee(2)	30 bps				30 bps
Maturity Date(3)	15-Jan-18				13-Sep-16
__________
-1	Calculated based on one-month LIBOR plus 1.30% and 1.60% as of December 31, 2013 and December 31, 2012, respectively.
-2	Effective December 10, 2013, the unused fee was replaced with a facility fee. The unused fee was based on the unsecured revolving credit facility's unused remaining borrowing capacity. The facility fee is based on the unsecured revolving credit facility's total borrowing capacity.
-3	Under the original and amended terms of our unsecured revolving credit facility, 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, 2013 (in thousands):
	2014	$	70,634
	2015	148,476
	2016	134,179
	2017	46,355
	2018	442,113
	Thereafter	563,579
		$	1,405,336

Risk_Management_and_Use_of_Fin1

Risk Management and Use of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
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, 2013 and 2012 (amounts in thousands):
		Notional Amount								Fair Value						Rate
	Type of Instrument	December 31, 2013				December 31, 2012				December 31, 2013			December 31, 2012			December 31, 2013		December 31, 2012		Index	Maturity Date
	Interest Rate Swap	$	23,161			$	22,698			$	(398	)	$	(1,015	)	2.9	%	2.9	%	GBP LIBOR(1)	8/10/14
	Interest Rate Swap(2)	11,041								(205		)				1.2	%			LIBOR	12/6/16
	Interest Rate Swap(3)	200,000								2,854						0.8	%			LIBOR	3/7/18
	Interest Rate Swap(2)	22,516								(361		)				1.6	%			LIBOR	5/31/18
	Interest Rate Swap	200,000								667						1.4	%			LIBOR	1/15/19
	Interest Rate Swap(2)	6,466								(86		)				1.8	%			LIBOR	1/31/19
	Interest Rate Swap(3)	50,000								1,690						1.3	%			LIBOR	3/6/20
	Interest Rate Swap	120,000								(1,515		)				2.4	%			LIBOR	1/31/21
	Interest Rate Swap(4)					9,160							(182		)			4.9	%	GBP LIBOR(1)
	Interest Rate Swap(5)					9,280							(241		)			3.4	%	GBP LIBOR(1)
	__________
	-1	Based on the three month GBP-based LIBOR BBA Index with variable rate reset dates every 90 days during the term of the swaps.
	-2	We assumed this swap in connection with the purchase of the Duke Portfolio on March 1, 2013. This swap is 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.
	-3	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 are 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.
	-4	We terminated this interest rate swap in May 2013.
	-5	We terminated this interest rate swap in October 2013.
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, 2013				December 31, 2012				Balance Sheet Location	December 31, 2013			December 31, 2012
	Derivatives designated as hedging instruments
	Interest Rate Swaps	Prepaid Expenses and Other Assets		$	5,211			$	—			Accounts Payable, Accrued Expenses and Other Liabilities	$	2,565		$	1,015
	Derivatives not designated as hedging instruments
	Interest Rate Swaps	Prepaid Expenses and Other Assets		$	—			$	—			Accounts Payable, Accrued Expenses and Other Liabilities	$	—		$	423
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 for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Derivatives Designated as Cash Flow Hedges:
	Gain (Loss) Recognized in Other Comprehensive Income (OCI) (Effective Portion)	$	(116	)		$	(7,024	)		$	(14,353	)
	Loss Reclassified from AOCI into Interest Expense (Effective Portion)	(4,054		)		(4,267		)		(3,945		)
	Loss Recognized in Interest Expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)	(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			$	397
	Net Settlement Payments from Non-Qualifying Interest Rate Swaps	(1,158		)		(682		)		(700		)
	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, 2013
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, 2013 (in thousands):
	2014	$	203,378
	2015	201,200
	2016	182,463
	2017	165,356
	2018	153,550
	Thereafter	514,457
		$	1,420,404

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2013
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 indicated periods (in thousands):
			Year Ended
			December 31,
			2013		2012		2011
	Investment Management Fees		$	489	$	29,695	$	21,004
	Transition Services Agreement Fees		686		2,500		—
	Acquisition-Related Fees		1,895		5,159		12,603
	Property Management Fees (1)		1,128		1,556		1,470
	Leasing Commissions (1)		836		876		1,952
	Construction Supervision and Management Fees (1)		873		1,049		154
	Brokerage Fees(2)		585		388		111
	Mortgage Banking Fees and Other		—		26		2,440
	Total		$	6,492	$	41,249	$	39,734
	__________
	-1	Such fees for each service ranged from 2.0% to 5.0% of gross revenues received from a property that we owned.
	-2	The brokerage fee upon the sale of properties was an amount equal to the lesser of (i) one-half of the competitive real estate commission or (ii) 3% of the sales price of each property sold. The total brokerage commission paid did not exceed the lesser of the competitive real estate commission or an amount equal to 6% of the sales price of the property.

Equity_Incentive_Plan_and_Perf1

Equity Incentive Plan and Performance Bonus Plan (Tables)	12 Months Ended
	Dec. 31, 2013
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, 2013 through December 31, 2013 is presented below:
		Nonvested
		Shares		Weighted-Average			Vested
				Grant Date
				Fair Value
				per Share
	Outstanding at January 1, 2013	300,000		$	10		—
	Granted	398,925		10			—
	Vested	(100,000	)	10			100,000
	Canceled (1)	—		—			(33,515	)
	Outstanding as of December 31, 2013	598,925		$	10		66,485
	__________
	-1	33,515 common shares were tendered in accordance with the terms of the 2013 equity incentive plan to satisfy minimum federal and 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.
Summary of Performance-Based Restricted Common Shares	'
	A summary of Performance-Based Restricted Common Shares from January 1, 2013 through December 31, 2013 is presented below:
		Nonvested
		Shares		Weighted-Average			Vested
				Grant Date
				Fair Value
				per Share
	Outstanding January 1, 2013	375,000		$	10		—
	Granted	27,500		8.9			—
	Vested	(402,500	)	9.92			402,500
	Canceled (1)	—		—			(144,563	)
	Outstanding as of December 31, 2013	—		$	—		257,937
	__________
	-1	144,563 common shares were tendered in accordance with the terms of the 2013 equity incentive plan to satisfy minimum federal and 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.
		2013			2012			2011
	Compensation Expense Recorded During the Years ended December 31 (1)	$	5,713		$	445		$	28
	Unamortized Compensation Costs	$	4,444		$	6,167		$	—
	Shares Available for the Future Awards(2)	4,597,500			19,298,000			19,973,000
Summary of Compensation Expense and Details	'
		2013			2012			2011
	Compensation Expense Recorded During the Years ended December 31 (1)	$	5,713		$	445		$	28
	Unamortized Compensation Costs	$	4,444		$	6,167		$	—
	Shares Available for the Future Awards(2)	4,597,500			19,298,000			19,973,000
	__________
	-1	Compensation Expense includes expenses incurred in our Listing Expense totaling $3.8 million.
	-2	Shares available for the future awards includes units under the 2013 equity incentive plan, which was the successor to the amended and restated 2004 equity incentive plan.

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
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, 2013, 2012 and 2011 (in thousands):
		Foreign Currency			Swap Fair Value			Accumulated Other
		Translation Gain (Loss)			Adjustment			Comprehensive
								Income (Loss)
	Balance at January 1, 2011	$	(9,758	)	$	(1,928	)	$	(11,686	)
	Other Comprehensive Loss Before Reclassifications	(821		)	(11,157		)	(11,978		)
	Balance at December 31, 2011	$	(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

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments and Investments (Tables)	12 Months Ended
	Dec. 31, 2013
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 at December 31, 2013 and December 31, 2012 (in thousands):
		As of December 31, 2013
						Fair Value Measurements Using:
		Total				Quoted				Significant			Significant
		Fair Value				Markets				Observable			Unobservable
						Prices				Inputs			Inputs
						(Level 1)				(Level 2)			(Level 3)
	Financial Assets (Liabilities)
	Cash and 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
		As of December 31, 2012
						Fair Value Measurements Using:
		Total				Quoted				Significant			Significant
		Fair Value				Markets				Observable			Unobservable
						Prices				Inputs			Inputs
						(Level 1)				(Level 2)			(Level 3)
	Financial Assets (Liabilities)
	Cash and Cash Equivalents	$	6,495			$	6,495			$	—		$	—
	Interest Rate Swaps Not Designated as Cash Flow Hedges - Liabilities	(423		)		—				(423		)	—
	Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	(1,015		)		—				(1,015		)	—
	Investment in CBRE Strategic Partners Asia	8,098				—				—			8,098
	Secured Notes Payable - Albion Mills	(9,288		)		—				—			(9,288		)
	Class B Interest	(200		)		—				—			(200		)
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 the variable rate note payable and 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, 2013 and 2012, respectively (in thousands):
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in				Secured Notes Payable - Albion Mills
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2013		$	8,098			$	(9,288	)
	Contributions		—				9,341
	Distributions		—				—
	Total Income (Loss) on Fair Value Adjustment		1,578				(80		)
	Translation Adjustment in Other Comprehensive Income		—				27
	Balance as of December 31, 2013		$	9,676			$	—
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Investment in				Secured Notes Payable - Albion Mills
			CBRE Strategic
			Partners Asia
	Balance at January 1, 2012		$	8,381			$	(8,775	)
	Contributions		2,030				—
	Distributions		(2,400		)		—
	Total Income (Loss) on Fair Value Adjustment		87				(111		)
	Translation Adjustment in Other Comprehensive Income		—				(402		)
	Balance at December 31, 2012		$	8,098			$	(9,288	)
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, 2013 and December 31, 2012 (in thousands):
			Carrying Value								Fair Value
	Financial Instrument		December 31,				December 31,				December 31,			December 31,
			2013				2012				2013			2012
	Secured Notes Payable(1)		$	681,200			$	492,944			$	721,728		$	514,451
	Secured Notes Payable - Albion Mills(2)		—				9,288				—			9,288
	Total Secured Notes Payable		$	681,200			$	502,232			$	721,728		$	523,739
	Unsecured Term Loan Facilities(1)		$	570,000			$	—			$	570,272		$	—
	Unsecured Revolving Credit Facility		$	170,044			$	265,000			$	170,044		$	265,000
	__________
	-1	Items are measured using Level 2 inputs.
	-2	Items are measured using Level 3 inputs. For purposes of this fair value disclosure, we based our fair value estimate for notes payable on our internal valuation that includes a representative sample of our lenders' market interest rate quotes as of December 31, 2013 and December 31, 2012 for debt with similar risk characteristics and maturities. We based our notes payable secured by our Albion Mills property carried at fair value on a third party appraiser's valuation, which used similar techniques as our internal valuation model as of December 31, 2012.

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of Minimum Commitment Under Ground Lease	'
	The minimum commitment under the ground lease as of December 31, 2013 and thereafter is as follows (in thousands):
	2014	$	273
	2015	273
	2016	273
	2017	273
	2018	276
	Thereafter	4,782
		$	6,150

Segment_Disclosure_Tables

Segment Disclosure (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Comparison of Net Operating Income	'
	The following table compares the net operating income for the years ended December 31, 2013, 2012 and 2011 (in thousands):
		Year Ended December 31,
		2013			2012			2011
	Domestic Industrial Properties
	Revenues:
	Rental	$	54,256		$	42,360		$	30,030
	Tenant Reimbursements	15,848			8,861			6,466
	Total Revenues	70,104			51,221			36,496
	Property and Related Expenses:
	Property Operating	4,299			3,196			2,736
	Real Estate Taxes	14,004			7,621			6,102
	Total Property and Related Expenses	18,303			10,817			8,838
	Net Operating Income	$	51,801		$	40,404		$	27,658
	Domestic Office Properties
	Revenues:
	Rental	$	136,663		$	97,164		$	83,897
	Tenant Reimbursements	37,177			24,314			20,058
	Total Revenues	173,840			121,478			103,955
	Property and Related Expenses:
	Property Operating	26,433			17,528			15,248
	Real Estate Taxes	23,967			15,015			11,548
	Total Property and Related Expenses	50,400			32,543			26,796
	Net Operating Income	$	123,440		$	88,935		$	77,159
	International Office/Retail Properties
	Revenues:
	Rental	$	5,787		$	5,908		$	5,154
	Tenant Reimbursements	281			236			211
	Total Revenues	6,068			6,144			5,365
	Property and Related Expenses:
	Property Operating	489			740			1,207
	Total Property and Related Expenses	489			740			1,207
	Net Operating Income	$	5,579		$	5,404		$	4,158
Reconciliation to Consolidated Net Income (Loss)	'
		Year Ended December 31,
		2013			2012			2011
	Reconciliation to Consolidated Net Income (Loss)
	Total Segment Net Operating Income	$	180,820		$	134,743		$	108,975
	Expenses:
	General and Administrative	23,138			14,660			5,132
	Investment Management Fee	489			29,695			20,908
	Acquisition-related Expenses	2,690			7,752			14,464
	Depreciation and Amortization	102,793			72,383			60,353
	Transition and Listing Expenses	12,681			8,249			—
		39,029			2,004			8,118
	Other Income and Expenses
	Interest and Other Income	1,321			2,235			1,607
	Interest Expense	(47,295		)	(33,845		)	(33,261		)
	Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	614			(118		)	(303		)
	Loss on Early Extinguishment of Debt	(1,051		)	(17,284		)	(108		)
	Gain on Conversion of Equity Investment to Controlling Interest	75,763			—			—
	Income (Loss) from Continuing Operations Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	68,381			(47,008		)	(23,947		)
	Provision for Income Taxes	(287		)	(266		)	(456		)
	Equity in Income of Unconsolidated Entities	12,111			3,959			3,590
	Net Income (Loss) from Continuing Operations	80,205			(43,315		)	(20,813		)
	Discontinued Operations
	Income from Discontinued Operations	382			720			1,227
	Gain (Loss) on Sale of Real Estate	2,759			(413		)	301
	Income From Discontinued Operations	3,141			307			1,528
	Net Income (Loss)	$	83,346		$	(43,008	)	$	(19,285	)
Condensed Assets	'
		Year Ended December 31,
	Condensed Assets	2013			2012
	Domestic Industrial Properties	$	725,566		$	678,930
	Domestic Office Properties	1,601,513			1,077,328
	International Office/Retail Properties	88,571			105,502
	Non-Segment Assets	594,946			616,276
	Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	—			76,826
	Total Assets	$	3,010,596		$	2,554,862
Capital Expenditures	'
		Year Ended December 31,
	Condensed Expenditures	2013			2012
	Domestic Industrial Properties	$	82,274		$	239,470
	Domestic Office Properties	510,081			28,914
	International Office/Retail Properties	—			668
	Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	—			56,180
	Total Capital Expenditures	$	592,355		$	325,232

Earnings_Per_Share_Attributabl1

Earnings Per Share Attributable to Common Shareholders (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted	'
	16. 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 (loss) available to common shareholders for the years ended December 31, 2013, 2012 and 2011 is as follows (in thousands except share data):
		Year Ended December 31,
		2013			2012			2011
	Numerator:
	Income (Loss) from Continuing Operations	$	80,205		$	(43,315	)	$	(20,813	)
	(Income) Loss from Continuing Operations Attributable to Noncontrolling Interests	(82		)	32			26
	Allocation to Participating Securities (Nonvested Time-Based Shares)	(360		)	(90		)	—
	Numerator for Basic and Diluted Income (Loss) from Continuing Operations	79,763			(43,373		)	(20,787		)
	Income from Discontinued Operations	3,141			307			1,528
	Numerator for Basic and Diluted Income (Loss) Available to Common Shareholders	$	82,904		$	(43,066	)	$	(19,259	)
	Denominator:
	Basic Weighted Average Vested Shares Outstanding	242,379,680			248,154,277			192,042,918
	Effect of Dilutive Securities - Performance-Based Shares (1)	—			—			—
	Diluted Weighted Average Vested Shares Outstanding	242,379,680			248,154,277			192,042,918
	Basic and Diluted Earnings Per Share:
	Income (Loss) from Continuing Operations Available to Common Shareholders per Share	$	0.33		$	(0.17	)	$	(0.11	)
	Income (Loss) from Discontinued Operations Available to Common Shareholders per Share	$	0.01		$	0		$	0.01
	Net Income (Loss) Available to Common Shareholders per Share	$	0.34		$	(0.17	)	$	(0.10	)
	__________
	-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

Distributions_Tables

Distributions (Tables)	12 Months Ended
	Dec. 31, 2013
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, 2013, 2012 and 2011:
		2013			2012				2011
	Distributions declared per common share	$	0.551		$	0.6			$	0.6
	Less: Distributions declared in the current period, and paid in the subsequent period	(0.042		)	(0.150		)		(0.150		)
	Add: Distributions declared in the prior year, and paid in the current year	0.15			0.15				0.15
	Distributions paid per common share	$	0.659		$	0.6			$	0.6
Income Tax Treatment For Distributions Declared	'
	The income tax treatment for distributions declared for the years ended December 31, 2013, 2012 and 2011 as identified above, were as follows:
		2013						2012						2011
	Ordinary Income	$	0.2903		44.1	%		$	0.087			14.5	%	$	0.239	39.9	%
	Return of Capital	0.3614			54.8	%		0.513				85.5	%	0.361		60.1	%	(1)
	Capital Gain (2)	0.0073			1.1	%		—				—	%	—		—	%
		$	0.659		100	%		$	0.6			100	%	$	0.6	100	%
	__________
	-1	This percentage is comprised of return of capital at 59.6% and qualified dividend income at 0.5%.
	-2	Capital gains are comprised entirely of unrecaptured Section 1250 gains.

Quarterly_Financial_Informatio1

Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Summary of Quarterly Financial Data	'
	Summarized quarterly financial data for the years ended December 31, 2013 and 2012 was as follows (in thousands, except per share amounts):
		2013 Quarter Ended
		March 31			June 30			September 30			December 31
	Revenues from Continuing Operations	$	53,432		$	66,556		$	64,786		$	65,238
	Net Operating Income (Loss) from Continuing Operations	77,704			(6,154		)	(2,525		)	(644		)
	Net 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) per common share-basic and diluted	$	0.33		$	(0.01	)	$	0		$	0.02
		2012 Quarter Ended
		March 31			June 30			September 30			December 31
	Revenues from Continuing Operations	$	42,719		$	44,198		$	46,474		$	45,452
	Net Operating Loss from Continuing Operations	(2,824		)	(2,610		)	(13,358		)	(28,216		)
	Loss from Continuing Operations	(2,264		)	(1,683		)	(12,506		)	(26,862		)
	Income (Loss) from Discontinued Operations	110			(216		)	122			291
	Net Loss	(2,154		)	(1,899		)	(12,384		)	(26,571		)
	Net Loss Attributable to Common Shareholders	(2,152		)	(1,899		)	(12,379		)	(26,546		)
	Net Loss per common share-basic and diluted	$	(0.01	)	$	(0.01	)	$	(0.05	)	$	(0.11	)

Organization_and_Nature_of_Bus1

Organization and Nature of Business (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Jun. 26, 2013

21-May-13

Dec. 31, 2013

Aug. 19, 2013

Jun. 23, 2013

Dec. 31, 2012

Dec. 31, 2011

Aug. 19, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

entity

Property

REIT Holdings

CSP OP

Consolidated Entities

Consolidated Entities

Unconsolidated Properties

Unconsolidated Properties

Property

sqft

Triple Net Lease, Single Tenant Properties

Property

Triple Net Lease, Single Tenant Properties

country

Property

Property

sqft

sqft

sqft

Property

Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock, Par or Stated Value Per Share

'

'

$0.01

'

'

$0.01

$0.01

'

'

'

'

'

'

Limited partnership units redeemed

'

'

'

'

'

'

'

246,361

'

'

'

'

'

Percentage of ownership interest in limited partnership Units

'

'

'

0.10%

'

'

'

'

'

'

'

'

'

Interest owned (percent)

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

Repurchase and Cancellation of Common Shares

$125,000

$125,000

$125,000

'

'

'

'

'

'

'

'

'

'

Repurchase and Cancellation of Common Shares, Shares

12,376,237

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock Purchase Price Per Share

'

'

'

'

$10.10

'

'

'

'

'

'

'

'

Common Shares of Beneficial Interest, issued

'

'

236,463,981

'

'

249,664,156

'

'

'

'

'

'

'

Number of real estate properties (properties)

'

'

33

'

'

54

'

'

'

99

'

30

'

Number Of States In Which Consolidated Properties Located

'

'

'

'

'

'

'

'

'

18

'

8

'

Number of Countries in Which Unconsolidated Properties Located

'

'

3

'

'

'

'

'

'

'

'

'

'

Net Rentable Area

'

'

'

'

'

'

'

'

'

22,500,000

18,100,000

12,800,000

11,300,000

Percentage of leased property (percent)

'

'

'

'

'

'

'

'

'

95.00%

'

99.10%

'

Property Subject to or Available for Operating Lease, Number of Units

'

'

'

'

'

'

'

'

'

'

74

'

20

Equity Method Investments, Unconsolidated Entities, Number

'

'

4

'

'

'

'

'

'

'

'

'

'

Basis_of_Presentation_and_Summ3

Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 30, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

segment

Property

Property Operating Expense

Property Operating Expense

Selling, General and Administrative Expenses

Selling, General and Administrative Expenses

Prepaid Rent and Security Deposits

Accounts Payable, Accrued Expenses and Other Liabilities

United Kingdom

United Kingdom

United Kingdom

European

European

European

Building and Building Improvements

Minimum

Maximum

Partially owned properties (properties)

RT/TC Atwater LP

Trammel Crow Company [Member]

Foreign Tax Authority

geographic_area

Site Improvements

Site Improvements

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Listing Expenses

$12,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of Long-Lived Assets Held-for-use

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, Plant and Equipment, Useful Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'39 years 0 days

'15 years

'25 years

'

'

'

'

Prepaid Insurance and Real Estate Taxes

2,699,000

2,014,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest owned (percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

95.00%

'

'

Ownership Percentage Held By Other Party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

'

Minimum Lease Period

'12 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Parent ownership interest, changes, purchase of interest by parent (percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,500,000

'

'

'

Number of Geographic Regions

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments (segments)

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restricted Cash

15,236,000

10,998,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Irrevocable stand-by letters of credit

14,500,000

17,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for uncollectible rent receivable

24,000

11,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exchange rate

'

'

'

'

'

'

'

'

'

'

1.6573

1.6242

'

1.3753

1.3189

'

'

'

'

'

'

'

'

Profit and loss weighted average exchange rate

'

'

'

'

'

'

'

'

'

'

1.5628

1.5865

1.6089

1.3248

1.2877

1.4

'

'

'

'

'

'

'

Transition costs

700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Listing expenses attributable to share-based compensation

3,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Provision for Income Taxes

287,000

266,000

456,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income Tax, Statutory Tax Rate on Real Property Operating Results

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20.00%

Deferred Tax Assets, Gross

'

'

'

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Tax Assets, Valuation Allowance

'

'

'

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes, Real Estate Investment Trust, Number of Subsidiary Elections

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest

'

'

345,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Income Taxes Payable

'

'

122,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prior Period Reclassification Adjustment

'

'

'

'

-1,200,000

-1,000,000

-1,200,000

-1,000,000

-8,200,000

8,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Lease Inducement Net

3,274,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earnest Money Deposits

2,750,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Asset

5,211,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other Assets

2,823,000

1,764,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepaid Expenses and Other Assets

16,757,000

3,778,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Uncollectible Rent Receivables Written Off

$200,000

$400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment_in_Real_Estate_Acti2

Investment in Real Estate Activity (Wholly-Owned Property Acquisitions) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Mar. 20, 2012

Jul. 31, 2013

Aug. 08, 2013

Aug. 16, 2012

Nov. 07, 2012

Nov. 30, 2012

Dec. 28, 2012

Dec. 28, 2012

In Thousands, unless otherwise specified

Wholly Owned Properties

Wholly Owned Properties

2400 Dralle Road

Carpenter Corporate Center One and Two

1200 Woods Chapel Road

Midwest Commerce Center One

20000 South Diamond Lake Road

Gateway at Riverside

701 and 801 Charles Ewing Boulevard

Mid-Atlantic Distribution Center-Building A

sqft

sqft

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

acre

sqft

sqft

acre

acre

acre

acre

acre

Open Option Contracts Written [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Net Rentable Area

'

'

383,622

4,321,139

1,350,000

226,822

156,800

1,107,000

280,577

800,797

110,765

672,000

Percentage of leased property (percent)

'

'

'

'

100.00%

100.00%

100.00%

100.00%

100.00%

100.00%

100.00%

100.00%

Real Estate Investment Property, at Cost

$2,270,222

$1,809,766

$60,259

$266,389

$64,250

$49,509

$10,750

$62,950

$18,500

$49,229

$28,310

$43,150

Investment_in_Real_Estate_Acti3

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, 2013		Dec. 31, 2012
Business Acquisition [Line Items]	'		'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land	'		69,407
Building and Improvements	'		157,082
Total Acquired Assets	'		266,955
Acquired Below-Market Leases (3)	'		-566	[1]
Net Assets Acquired	'		266,389
Notes Payable, premium	17,294		7,555
Acquired In-Place Leases	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	'		32,368	[2]
Above-market leases	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	'		8,098	[2]
Wholly Owned Properties	'		'
Business Acquisition [Line Items]	'		'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land	7,461		'
Building and Improvements	43,307		'
Total Acquired Assets	60,877		'
Acquired Below-Market Leases (3)	618	[3]	'
Total Assumed Liabilities	618		'
Net Assets Acquired	60,259		'
Below Market Leases, Acquired, Weighted Average Amortization Period	'9 years 11 months 1 day		'10 years 4 months 0 days
Wholly Owned Properties | Carpenter Center	'		'
Business Acquisition [Line Items]	'		'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land	5,901		'
Building and Improvements	35,950		'
Total Acquired Assets	50,127		'
Acquired Below-Market Leases (3)	618	[3]	'
Total Assumed Liabilities	618		'
Net Assets Acquired	49,509		'
Wholly Owned Properties | 1200 Woods Chapel Road	'		'
Business Acquisition [Line Items]	'		'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land	1,560		'
Building and Improvements	7,357		'
Total Acquired Assets	10,750		'
Acquired Below-Market Leases (3)	0	[3]	'
Total Assumed Liabilities	0		'
Net Assets Acquired	10,750		'
Wholly Owned Properties | Acquired In-Place Leases	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	9,032	[4]	'
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	'9 years 4 months 2 days		'5 years 9 months 25 days
Wholly Owned Properties | Acquired In-Place Leases | Carpenter Center	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	7,795	[4]	'
Wholly Owned Properties | Acquired In-Place Leases | 1200 Woods Chapel Road	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	1,237	[4]	'
Wholly Owned Properties | Above-market leases	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	1,077	[4]	'
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	'7 years 6 months 22 days		'4 years 10 months 30 days
Wholly Owned Properties | Above-market leases | Carpenter Center	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	481	[4]	'
Wholly Owned Properties | Above-market leases | 1200 Woods Chapel Road	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	596	[4]	'
Partially owned properties (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 (properties) | Duke Portfolio	'		'
Business Acquisition [Line Items]	'		'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land	60,310		'
Building and Improvements	364,174		'
Total Acquired Assets	509,756		'
Secured Notes Payable, Net (2)	229,539	[5]	'
Acquired Below-Market Leases (3)	5,549	[6]	'
Total Assumed Liabilities	235,088		'
Net Assets Acquired	274,668		'
Partially owned properties (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 (properties) | Acquired In-Place Leases | Duke Portfolio	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	64,217	[7]	'
Partially owned properties (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 (properties) | Above-market leases | Duke Portfolio	'		'
Business Acquisition [Line Items]	'		'
Finite-lived Intangible Assets Acquired	$21,055	[7]	'
[1]	Represents below-market leases with a weighted average amortization period of 10.33 years.
[2]	Represents in-place leases with a weighted average amortization period of 5.82 years and above-market leases with a weighted average amortization period of 4.92 years.
[3]	Represents below-market leases with a weighted average amortization period of 9.92 years.
[4]	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.
[5]	Secured notes payable is presented net of a premium of $13.5 million.
[6]	Represents below-market leases with a weighted average amortization period of 7.83 years.
[7]	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.

Investment_in_Real_Estate_Acti4

Investment in Real Estate Activity (Pro Forma Operations) (Details) (USD $)

12 Months Ended

12 Months Ended

5 Months Ended

10 Months Ended

12 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 28, 2012

Mar. 20, 2012

Aug. 16, 2012

Nov. 07, 2012

Nov. 30, 2012

Dec. 28, 2012

Dec. 31, 2012

2400 Dralle Road

Midwest Commerce Center I

20000 S. Diamond Lake Road

Gateway at Riverside

701 and 702 Charles Ewing Building

Mid-Atlantic Distribution Center - Bldg A

Carpenter and Woods Chapel

Carpenter and Woods Chapel

Carpenter and Woods Chapel

Duke JV

Duke JV

Wholly Owned Properties

Wholly Owned Properties

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Above-market leases

Above-market leases

Above-market leases

Above-market leases

Above-market leases

Above-market leases

Above-market leases

Above-market leases

701 and 801 Charles Ewing Boulevard

2400 Dralle Road

Midwest Commerce Center One

20000 South Diamond Lake Road

Gateway at Riverside

Mid-Atlantic Distribution Center - Bldg A

2012 Acquisitions Pro Forma

sqft

sqft

2400 Dralle Road

Midwest Commerce Center I

20000 S. Diamond Lake Road

Gateway at Riverside

701 and 702 Charles Ewing Building

Mid-Atlantic Distribution Center - Bldg A

Wholly Owned Properties

2400 Dralle Road

Midwest Commerce Center I

20000 S. Diamond Lake Road

Gateway at Riverside

701 and 702 Charles Ewing Building

Mid-Atlantic Distribution Center - Bldg A

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Wholly Owned Properties

Carpenter and Woods Chapel

acre

acre

acre

acre

acre

acre

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Real Estate Investment Property, at Cost

$2,270,222

$1,809,766

'

'

'

'

'

'

'

'

'

'

'

'

$266,389

$60,259

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$28,310

$64,250

$62,950

$18,500

$49,229

$43,150

'

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land

'

69,407

'

16,438

17,182

2,860

16,108

6,208

10,611

'

'

'

'

'

'

7,461

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Rentable Area

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,321,139

383,622

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

110,765

1,350,000

1,107,000

280,577

800,797

672,000

'

Percentage of leased property (percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

100.00%

100.00%

100.00%

100.00%

100.00%

'

Revenues

'

'

'

'

'

'

'

'

'

263,566

246,050

180,316

2,184

50,142

6,557

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

259,367

Net Operating Income

'

'

'

'

'

'

'

'

'

46,337

18,384

24,260

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,092

Net Income

'

'

'

'

'

'

'

'

'

11,416

38,602

1,982

726

1,612

3,363

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

43,480

Basic and Diluted Income per Share

'

'

'

'

'

'

'

'

'

$0.05

$0.16

$0.01

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.17

Business Acquisitions Pro Forma Weighted Average Common Outstanding Shares Basic And Diluted

242,379,680

248,154,277

192,042,918

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Building and Improvements

'

157,082

'

39,087

36,767

12,096

27,393

16,574

25,165

'

'

'

'

'

'

43,307

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-lived Intangible Assets Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

32,368

[1]

6,645

[1]

7,172

[1]

2,622

[1]

6,001

[1]

5,117

[1]

4,811

[1]

9,032

[2]

8,098

[1]

2,080

[1]

1,829

[1]

922

[1]

293

[1]

411

[1]

2,563

[1]

1,077

[2]

'

'

'

'

'

'

'

Total Acquired Assets

'

266,955

'

64,250

62,950

18,500

49,795

28,310

43,150

'

'

'

'

'

'

60,877

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquired Below-Market Leases (3)

'

-566

[3]

'

0

[3]

0

[3]

0

[3]

-566

[3]

0

[3]

0

[3]

'

'

'

'

'

'

618

[4]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net

'

$266,389

'

$64,250

$62,950

$18,500

$49,229

$28,310

$43,150

'

'

'

'

'

'

$60,259

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Represents in-place leases with a weighted average amortization period of 5.82 years and above-market leases with a weighted average amortization period of 4.92 years.

[2]

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.

[3]

Represents below-market leases with a weighted average amortization period of 10.33 years.

[4]

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, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Aug. 12, 2011

Jul. 09, 2012

Nov. 29, 2013

Dec. 20, 2013

Apr. 05, 2011

Rickenbacker Two and Rickenbacker Three

Cherokee Corporate Park

Albion Mills Retail Park

Summit Distribution Center

Orchard Park One

Real Estate Properties [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Sales Price of Investment Real Estate

$31,053

'

'

'

'

'

'

'

$31,053

'

$23,914

$22,639

$3,125

$17,253

$13,800

$1,275

REVENUES

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rental

'

'

'

'

'

'

'

'

1,755

2,311

3,256

'

'

'

'

'

Tenant Reimbursements

'

'

'

'

'

'

'

'

275

372

569

'

'

'

'

'

Total Revenues

'

'

'

'

'

'

'

'

2,030

2,683

3,825

'

'

'

'

'

EXPENSES

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property Operating

'

'

'

'

'

'

'

'

248

338

552

'

'

'

'

'

Real Estate Taxes

'

'

'

'

'

'

'

'

197

133

279

'

'

'

'

'

Investment Management Fee

'

'

'

'

'

'

'

'

0

0

96

'

'

'

'

'

Depreciation and Amortization

'

'

'

'

'

'

'

'

607

1,270

1,062

'

'

'

'

'

Total Expenses

'

'

'

'

'

'

'

'

1,052

1,741

1,989

'

'

'

'

'

Interest and Other (Expense) Income

'

'

'

'

'

'

'

'

-80

283

-12

'

'

'

'

'

Interest Expense

'

'

'

'

'

'

'

'

-420

-505

-474

'

'

'

'

'

Loss on Early Extinguishment of Debt

'

'

'

'

'

'

'

'

-96

0

0

'

'

'

'

'

Provision for Income Taxes

'

'

'

'

'

'

'

'

0

0

-123

'

'

'

'

'

Total Other Expenses

'

'

'

'

'

'

'

'

-596

-222

-609

'

'

'

'

'

Income from Discontinued Operations

'

'

'

'

'

'

'

'

382

720

1,227

'

'

'

'

'

Gain (Loss) from Sale of Real Estate

'

'

'

'

'

'

'

'

2,759

-413

301

'

'

'

'

'

Income From Discontinued Operations

$2,846

$114

$90

$91

$291

$122

($216)

$110

$3,141

$307

$1,528

'

'

'

'

'

Investment_in_Real_Estate_Acti5

Investment in Real Estate Activity (Narrative) (Details)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

24 Months Ended

12 Months Ended

Dec. 17, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Mar. 01, 2013

Jan. 30, 2013

Dec. 31, 2013

Jan. 30, 2013

Dec. 31, 2013

Mar. 01, 2013

Jan. 30, 2013

Mar. 01, 2013

Mar. 01, 2013

Mar. 01, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

EUR (€)

USD ($)

USD ($)

USD ($)

Wholly Owned Properties

Wholly Owned Properties

Partially owned properties (properties)

Partially owned properties (properties)

Partially owned properties (properties)

Partially owned properties (properties)

Partially owned properties (properties)

Partially owned properties (properties)

Partially owned properties (properties)

Partially owned properties (properties)

Office Building

Warehouse

Domestic Industrial Properties

Domestic Office Properties

Acquired In-Place Leases

Acquired In-Place Leases

Acquired In-Place Leases

Above-market leases

Above-market leases

Above-market leases

Property

Property

USD ($)

USD ($)

1400 Atwater

Duke Portfolio

Duke Portfolio

Duke Portfolio

CSP OP

Partially owned properties (properties)

Partially owned properties (properties)

Property

Property

Wholly Owned Properties

Wholly Owned Properties

Partially owned properties (properties)

Wholly Owned Properties

Wholly Owned Properties

Partially owned properties (properties)

USD ($)

Property

Duke Portfolio

Duke Portfolio

Property

Property

sqft

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'9 years 4 months 2 days

'5 years 9 months 25 days

'6 years 10 months 4 days

'7 years 6 months 22 days

'4 years 10 months 30 days

'7 years 9 months 21 days

Number of Real Estate Properties, Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6

2

'

'

'

'

'

'

Number of real estate properties (properties)

'

33

54

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to acquire real estate

€ 70,500,000

$115,377,000

$266,491,000

$192,899,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Parent ownership interest, changes, purchase of interest by parent, percent

'

'

'

'

'

'

'

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Parent ownership interest, changes, purchase of interest by parent (percent)

'

'

'

'

'

'

'

3,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of interests acquired (percent)

'

'

'

'

'

'

'

'

'

'

'

20.00%

20.00%

'

'

'

'

'

'

'

'

'

'

'

Number of properties acquired (properties)

'

'

'

'

'

'

'

'

'

'

'

17

'

'

16

1

'

'

'

'

'

'

'

'

Area of Building

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,318,402

'

'

'

'

'

'

'

'

Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

'

'

'

'

'

'

'

'

'

'

Business Combination, Step Acquisition, VIE, Equity Interest in Acquired, Percent

'

'

'

'

'

'

'

'

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

Business Combination, Consideration Transferred

'

'

'

'

'

'

98,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Including equity interest in acquiree held prior to combination

'

'

'

'

'

'

490,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Secured Notes Payable, Net (2)

'

'

'

'

'

'

'

'

'

'

229,539,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition-Related

'

2,690,000

7,752,000

14,464,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) from Sale of Real Estate

'

'

-400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain on Conversion of Equity Interest to Controlling Interest

'

$75,763,000

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Below Market Leases, Acquired, Weighted Average Amortization Period

'

'

'

'

'9 years 11 months 1 day

'10 years 4 months 0 days

'

'

'7 years 10 months 0 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

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

Investments_in_Unconsolidated_2

Investments in Unconsolidated Entities - Investments (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 01, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Sep. 18, 2008

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jun. 10, 2010

Dec. 31, 2013

Oct. 09, 2013

Jul. 02, 2013

Dec. 31, 2012

In Thousands, unless otherwise specified

Property

Property

Duke Portfolio

CBRE Strategic Partners Asia

CBRE Strategic Partners Asia

Afton Ridge

Afton Ridge

Afton Ridge

UK JV

UK JV

European JV

European JV

European JV

Duke JV

Duke JV

Duke JV

Duke JV

Property

Property

Property

Property

Property

Property

Property

Property

Property

Property

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest owned (percent)

'

'

'

20.00%

5.07%

'

90.00%

'

90.00%

80.00%

'

80.00%

'

80.00%

80.00%

80.00%

80.00%

'

Number of real estate properties (properties)

33

54

'

'

3

7

0

1

'

3

3

9

6

'

18

'

'

37

Equity method investments

$514,802

$515,829

$537,631

'

$9,676

$8,098

$1,512

[1]

$17,008

[1]

'

$36,794

$37,487

$174,272

$108,725

'

$292,548

'

'

$344,511

[1]

Amount represents cash and an escrow holdback at the joint venture.

Investments_in_Unconsolidated_3

Investments in Unconsolidated Entities - Investments Roll Forward (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]	'	'	'
Investment Balance, January 1,	$515,829	$537,631	'
Contributions	210,745	45,568	'
Equity in Income of Unconsolidated Entities	12,111	3,959	3,590
Other Comprehensive Income of Unconsolidated Entities	7,293	1,144	'
Conversion of Duke JV Equity Investment to Controlling Interest	-139,558	0	'
Distributions	-91,618	-72,473	'
Investment Balance, December 31,	$514,802	$515,829	$537,631

Investments_in_Unconsolidated_4

Investments in Unconsolidated Entities - Consolidated Balance Sheet (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'		'
Assets	$1,094,501		$1,471,369
Liabilities and Equity	'		'
Liabilities	269,636		676,769
CSP Equity	514,802		515,829
Other Investors' Equity	310,063		278,771
Total Liabilities and Equity	1,094,501		1,471,369
Investments in Real Estate	'		'
Assets	'		'
Assets	990,830	[1]	1,240,196	[1]
Other Assets	'		'
Assets	'		'
Assets	103,671		231,173
Secured Notes Payable, net	'		'
Liabilities and Equity	'		'
Liabilities	233,412		620,457
Other Liabilities	'		'
Liabilities and Equity	'		'
Liabilities	36,224		56,312
European JV	'		'
Assets	'		'
Assets	379,514		231,822
Liabilities and Equity	'		'
Liabilities	161,674		95,916
CSP Equity	174,272		108,725
Other Investors' Equity	43,568		27,181
Total Liabilities and Equity	379,514		231,822
European JV | Investments in Real Estate	'		'
Assets	'		'
Assets	343,642		208,786
European JV | Other Assets	'		'
Assets	'		'
Assets	35,872		23,036
European JV | Secured Notes Payable, net	'		'
Liabilities and Equity	'		'
Liabilities	153,651		82,894
European JV | Other Liabilities	'		'
Liabilities and Equity	'		'
Liabilities	$8,023		$13,022
[1]	2013 amounts include 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. 2012 amounts include REIT Basis Adjustments for costs incurred by the Company outside of both the Duke JV and the Afton Ridge joint ventures.

Investments_in_Unconsolidated_5

Investments in Unconsolidated Entities - Consolidated Statements of Operations (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]	'	'	'
Total Revenue	$131,166	$153,131	$128,908
Operating Expenses	29,917	50,204	72,112
Net Operating Income	101,249	102,927	56,796
Acquisition and Related Expense	4,778	686	0
Depreciation and Amortization	41,457	68,714	57,303
Interest Expense	13,673	26,516	22,927
Net Income (Loss) from Continuing Operations	41,341	7,011	-23,434
Income from Discontinued Operations	-841	0	0
Gain (Loss) from Sales of Real Estate	3,628	0	0
Net Income (Loss)	44,128	7,011	-23,434
CSP Equity in Net Income	12,228	4,088	3,726
Adjustments for REIT basis	-117	-129	-136
Company Share in Net Income	12,111	3,959	3,590
European JV	'	'	'
Business Acquisition [Line Items]	'	'	'
Total Revenue	19,581	11,947	6,430
Operating Expenses	3,631	1,824	2,042
Net Operating Income	15,950	10,123	4,388
Acquisition and Related Expense	4,778	39	0
Depreciation and Amortization	7,636	5,388	3,103
Interest Expense	2,400	462	0
Net Income (Loss) from Continuing Operations	1,136	4,234	1,285
Income from Discontinued Operations	0	0	0
Gain (Loss) from Sales of Real Estate	0	0	0
Net Income (Loss)	1,136	4,234	1,285
CSP Equity in Net Income	909	3,387	1,029
Adjustments for REIT basis	0	0	0
Company Share in Net Income	$909	$3,387	$1,029

Investments_in_Unconsolidated_6

Investments in Unconsolidated Entities - Narrative (Details)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

Dec. 17, 2013

Dec. 11, 2013

Nov. 08, 2013

Jun. 10, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 11, 2013

Dec. 31, 2013

Jul. 02, 2013

Sep. 18, 2008

Dec. 31, 2013

Dec. 31, 2013

Dec. 17, 2013

Nov. 26, 2013

Jun. 10, 2010

Dec. 31, 2013

Mar. 31, 2013

Nov. 08, 2013

Mar. 31, 2013

Dec. 31, 2013

Oct. 09, 2013

Jul. 03, 2013

Jul. 02, 2013

Jan. 16, 2014

Jan. 16, 2014

Dec. 31, 2013

Nov. 08, 2013

Oct. 09, 2013

Jul. 02, 2013

Nov. 26, 2013

Jun. 10, 2010

Nov. 08, 2013

Jun. 10, 2010

EUR (€)

USD ($)

USD ($)

joint_venture

USD ($)

USD ($)

USD ($)

Afton Ridge

Afton Ridge

Afton Ridge

Afton Ridge

UK JV

European JV

European 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

Subsequent Event

Subsequent Event

Subsequent Event

Duke JV

Duke JV

Duke JV

European JV

European JV

Duke JV

UK JV

USD ($)

USD ($)

EUR (€)

USD ($)

USD ($)

Japan

Property

Property

USD ($)

USD ($)

USD ($)

USD ($)

Duke JV

Duke JV

USD ($)

mortgage

mortgage

USD ($)

EUR (€)

USD ($)

GBP (£)

Property

Property

USD ($)

USD ($)

Open Option Contracts Written [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest owned (percent)

'

'

'

'

'

'

'

'

90.00%

'

90.00%

80.00%

80.00%

'

'

80.00%

5.07%

'

'

'

80.00%

80.00%

'

80.00%

'

'

'

'

'

'

'

'

'

'

Brokerage Fees Paid to Affiliate of Former Investment Advisor

'

'

'

'

$111,000

$144,000

$204,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition Fees

'

'

'

'

49,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership Percentage Held By Other Party

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition, Maximum Allowable Assets Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000,000

'

400,000,000

Repayment Of Mortgage Debt

'

'

'

'

'

'

'

'

'

25,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Portion Of Proceeds Used To Repay Mortgage Loan

'

'

'

'

'

'

'

'

'

2,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital Commitment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Issued During Period, Value, New Issues

'

'

'

'

33,580,000

236,679,000

704,069,000

'

'

'

'

'

'

'

'

'

17,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Acquisition, Joint Venture, Maximum Assets to be Acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

28,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combination, Consideration Transferred

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

62,000,000

'

'

'

Notes Payable

'

'

'

'

681,200,000

502,232,000

'

'

'

'

'

'

'

'

25,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Mortgage Notes Payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

5

'

'

'

'

Number of properties acquired (properties)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Properties To Collateralized Mortgage Notes Payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

'

'

'

'

'

'

'

'

'

'

Principal Payments On Mortgage Notes Payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,800,000

99,200,000

'

'

'

'

'

'

'

'

'

'

'

Mortgage Notes Payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,700,000

'

79,800,000

'

'

'

'

'

'

'

'

'

'

Payments to acquire real estate

70,500,000

'

'

'

115,377,000

266,491,000

192,899,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of properties sold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sales of Real Estate

'

40,000,000

11,000,000

'

'

'

'

46,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,200,000

13,000,000

13,100,000

39,200,000

'

'

'

'

'

'

Equity Method Investments, Number of Joint Ventures Acquired

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gains (Losses) on Sales of Investment Real Estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$300,000

'

'

'

'

'

'

$500,000

'

Investments_in_Unconsolidated_7

Investments in Unconsolidated Entities - Properties (Details)	Dec. 31, 2013	Dec. 31, 2012
	Property	Property
Schedule of Equity Method Investments [Line Items]	'	'
Number of real estate properties (properties)	33	54

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, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Intangible Assets, net:	'	'
Total	$248,872	$199,058
Intangible Liabilities, Net:	'	'
Below-Market Leases	49,751	43,659
Accumulated Amortization	-23,022	-19,077
Below-Market Leases, Net	26,729	24,582
Above-Market Ground Lease Obligation	1,501	1,501
Accumulated Amortization	-160	-89
Above-Market Ground Lease Obligation, Net	1,341	1,412
Total Intangible Liabilities, Net	28,070	25,994
Deferred Leasing Costs	'	'
Intangible Assets, net:	'	'
Finite-Lived Intangible Assets, Gross	11,243	6,350
Finite-Lived Intangible Assets, Accumulated Amortization	-3,016	-1,705
Total	8,227	4,645
Above-market leases	'	'
Intangible Assets, net:	'	'
Finite-Lived Intangible Assets, Gross	77,180	55,219
Finite-Lived Intangible Assets, Accumulated Amortization	-33,577	-23,364
Total	43,603	31,855
Acquired In-Place Leases	'	'
Intangible Assets, net:	'	'
Finite-Lived Intangible Assets, Gross	321,776	252,501
Finite-Lived Intangible Assets, Accumulated Amortization	-124,734	-89,943
Total	$197,042	$162,558

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, 2013		Dec. 31, 2012		Dec. 31, 2011
Deferred Leasing Costs	'		'		'
Intangible Assets Goodwill And Other Assets [Line Items]	'		'		'
Amortization leases	$1,314	[1]	$714	[1]	$468	[1]
Above-market leases	'		'		'
Intangible Assets Goodwill And Other Assets [Line Items]	'		'		'
Amortization leases	10,374	[2]	7,658	[2]	6,385	[2]
In-Place Leases	'		'		'
Intangible Assets Goodwill And Other Assets [Line Items]	'		'		'
Amortization leases	36,653	[1]	28,826	[1]	23,987	[1]
Below-Market Leases	'		'		'
Intangible Assets Goodwill And Other Assets [Line Items]	'		'		'
Amortization leases	-3,972	[2]	-5,173	[2]	-4,254	[2]
Above-Market Ground Lease Obligations	'		'		'
Intangible Assets Goodwill And Other Assets [Line Items]	'		'		'
Amortization leases	($71)	[3]	($71)	[3]	($18)	[3]
[1]	The amortization of deferred leasing costs and in-place leases are recorded to depreciation and amortization expense in the 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 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 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, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
Total	$248,872	$199,058
Deferred Leasing Costs	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
2014	1,318	'
2015	1,117	'
2016	1,018	'
2017	958	'
2018	915	'
Thereafter	2,901	'
Total	8,227	4,645
Acquired Above-Market Leases	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
2014	9,496	'
2015	9,082	'
2016	5,540	'
2017	4,399	'
2018	3,897	'
Thereafter	11,189	'
Total	43,603	'
Acquired In-Place Leases	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
2014	36,736	'
2015	34,408	'
2016	27,619	'
2017	23,182	'
2018	20,278	'
Thereafter	54,819	'
Total	197,042	162,558
Acquired Below-Market Leases	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
2014	4,129	'
2015	3,960	'
2016	3,381	'
2017	2,889	'
2018	2,570	'
Thereafter	9,800	'
Total	26,729	'
Above-Market Ground Lease Obligations	'	'
Acquired Indefinite-lived Intangible Assets [Line Items]	'	'
2014	71	'
2015	71	'
2016	71	'
2017	71	'
2018	71	'
Thereafter	986	'
Total	$1,341	'

Debt_Notes_Payable_Secured_by_

Debt - Notes Payable Secured by Real Property (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]	'		'
Notes Payable	$681,200		$502,232
Secured notes payable	665,292		496,790
Notes Payable, premium	17,294		7,555
Less Discount	-1,386		-2,113
Total Secured Notes Payable, Net	681,200		502,232
Avion III & IV	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.52%	[1]	'
Effective interest rate (percent)	7.00%	[1],[2]	'
Maturity Date	1-Apr-14	[1]	'
Notes Payable	19,979	[1]	20,464	[1]
Maskew Retail Park	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.68%	[3]	'
Effective interest rate (percent)	5.68%	[2],[3]	'
Maturity Date	10-Aug-14	[3]	'
Notes Payable	23,161	[3]	22,698	[3]
12650 Ingenuity Drive	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.62%		'
Effective interest rate (percent)	7.50%	[2]	'
Maturity Date	1-Oct-14		'
Notes Payable	11,842		12,272
Bolingbrook Point III	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.26%		'
Effective interest rate (percent)	5.26%	[2]	'
Maturity Date	1-Jan-15		'
Notes Payable	7,900		7,900
One WaySide Road	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.66%		'
Effective interest rate (percent)	5.25%	[2]	'
Maturity Date	1-Aug-15		'
Notes Payable	13,352		13,745
One Wayside Road	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.92%		'
Effective interest rate (percent)	5.25%	[2]	'
Maturity Date	1-Aug-15		'
Notes Payable	11,169		11,464
Union Cross Bldg. II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	6.03%		'
Effective interest rate (percent)	6.03%	[2]	'
Maturity Date	1-Sep-15		'
Notes Payable	8,743		8,862
Deerfield Commons I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.23%		'
Effective interest rate (percent)	5.23%	[2]	'
Maturity Date	1-Dec-15		'
Notes Payable	9,290		9,442
Celebration Office Center	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	8,998	[4],[5]	0	[4],[5]
22535 Colonial Pkwy	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	8,051	[4],[5]	0	[4],[5]
Northpoint III	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	10,419	[4],[5]	0	[4],[5]
Goodyear Crossing Ind. Park II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	19,891	[4],[5]	0	[4],[5]
3900 North Paramount Parkway	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	7,815	[4],[5]	0	[4],[5]
3900 South Paramount Parkway	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	7,815	[4],[5]	0	[4],[5]
1400 Perimeter Park Drive	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	2,368	[4],[5]	0	[4],[5]
Miramar I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	9,283	[4],[5]	0	[4],[5]
Miramar II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.25%	[4],[5]	'
Effective interest rate (percent)	2.50%	[2],[4],[5]	'
Maturity Date	1-Dec-15	[4],[5]	'
Notes Payable	12,503	[4],[5]	0	[4],[5]
90 Hudson Street	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.65%		'
Effective interest rate (percent)	5.15%	[2]	'
Maturity Date	11-Apr-16		'
Notes Payable	116,100		117,981
Point West I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	3.41%	[4]	'
Effective interest rate (percent)	3.41%	[2],[4]	'
Maturity Date	6-Dec-16	[4]	'
Notes Payable	11,041	[4]	0	[4]
100 Tice Blvd.	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.97%		'
Effective interest rate (percent)	4.38%	[2]	'
Maturity Date	15-Sep-17		'
Notes Payable	19,544		20,094
100 Tice Blvd	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.97%		'
Effective interest rate (percent)	4.38%	[2]	'
Maturity Date	15-Sep-17		'
Notes Payable	19,543		20,093
4701 Gold Spike Drive	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.45%	[6]	'
Effective interest rate (percent)	4.45%	[2],[6]	'
Maturity Date	1-Mar-18	[6]	'
Notes Payable	10,154	[6]	10,342	[6]
1985 International Way	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.45%	[6]	'
Effective interest rate (percent)	4.45%	[2],[6]	'
Maturity Date	1-Mar-18	[6]	'
Notes Payable	7,055	[6]	7,186	[6]
3770 Deerpark Boulevard	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.45%	[6]	'
Effective interest rate (percent)	4.45%	[2],[6]	'
Maturity Date	1-Mar-18	[6]	'
Notes Payable	7,294	[6]	7,428	[6]
Tolleson Commerce Park II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.45%	[6]	'
Effective interest rate (percent)	4.45%	[2],[6]	'
Maturity Date	1-Mar-18	[6]	'
Notes Payable	4,386	[6]	4,467	[6]
20000 S. Diamond Lake Road	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.45%	[6]	'
Effective interest rate (percent)	4.45%	[2],[6]	'
Maturity Date	1-Mar-18	[6]	'
Notes Payable	6,388	[6]	0	[6]
Atrium I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	3.78%	[4]	'
Effective interest rate (percent)	3.78%	[2],[4]	'
Maturity Date	31-May-18	[4]	'
Notes Payable	22,516	[4]	0	[4]
McAuley Place	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	3.98%	[4]	'
Effective interest rate (percent)	3.50%	[2],[4]	'
Maturity Date	1-Sep-18	[4]	'
Notes Payable	13,230	[4]	0	[4]
Easton III	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	3.95%	[4]	'
Effective interest rate (percent)	3.95%	[2],[4]	'
Maturity Date	31-Jan-19	[4]	'
Notes Payable	6,466	[4]	0	[4]
90 Hudson Street	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.66%		'
Effective interest rate (percent)	5.26%	[2]	'
Maturity Date	1-May-19		'
Notes Payable	104,928		106,465
Fairforest Bldg. 6	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.42%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Jun-19		'
Notes Payable	2,086		2,402
North Rhett I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.65%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Aug-19		'
Notes Payable	2,405		2,827
Kings Mt. I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.47%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Jan-20		'
Notes Payable	4,043		4,589
North Rhett II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.20%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Oct-20		'
Notes Payable	1,628		1,822
Mount Holly Bldg.	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.20%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Oct-20		'
Notes Payable	1,628		1,822
Orangeburg Park Bldg.	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.20%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Oct-20		'
Notes Payable	1,656		1,853
Kings Mtn 1	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.27%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Oct-20		'
Notes Payable	1,411		1,578
Ten Parkway North	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.75%		'
Effective interest rate (percent)	4.75%	[2]	'
Maturity Date	1-Jan-21		'
Notes Payable	11,777		12,072
Union Cross Bldg. II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.53%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Jun-21		'
Notes Payable	6,471		7,149
Union Cross Bldg. I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.50%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Jul-21		'
Notes Payable	2,124		2,344
Norman Pointe I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.24%	[4]	'
Effective interest rate (percent)	3.50%	[2],[4]	'
Maturity Date	1-Oct-21	[4]	'
Notes Payable	20,512	[4]	0	[4]
Norman Pointe II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.24%	[4]	'
Effective interest rate (percent)	3.50%	[2],[4]	'
Maturity Date	1-Oct-21	[4]	'
Notes Payable	22,583	[4]	0	[4]
Landings I	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.24%	[3]	'
Effective interest rate (percent)	3.50%	[2],[3]	'
Maturity Date	1-Oct-21	[3]	'
Notes Payable	15,437	[3]	0	[3]
Landings II	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.24%	[4]	'
Effective interest rate (percent)	3.50%	[2],[4]	'
Maturity Date	1-Oct-21	[4]	'
Notes Payable	13,616	[4]	0	[4]
Fairforest Bldg. 5	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	6.33%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Feb-24		'
Notes Payable	8,277		8,840
North Rhett IV	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.80%		'
Effective interest rate (percent)	6.50%	[2]	'
Maturity Date	1-Feb-25		'
Notes Payable	8,414		8,935
Thames Valley Five	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	6.42%	[7]	'
Effective interest rate (percent)	6.42%	[2],[7]	'
Maturity Date	29-May-13	[7]	'
Notes Payable	0	[7]	9,160	[7]
Sabal Pavilion	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	6.38%	[8]	'
Effective interest rate (percent)	3.00%	[2],[8]	'
Maturity Date	1-Aug-13	[8]	'
Notes Payable	0	[8]	14,700	[8]
Albion Mills Retail Park	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	5.25%	[9]	'
Effective interest rate (percent)	5.25%	[2],[9]	'
Maturity Date	10-Oct-13	[9]	'
Notes Payable	0	[9]	9,288	[9]
Summit Distribution Center	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (percent)	4.45%	[10]	'
Effective interest rate (percent)	4.45%	[10],[2]	'
Maturity Date	1-Mar-18	[10]	'
Notes Payable	'		$6,506	[10]
[1]	This loan was paid off in full in January 2014. See Note 19, Subsequent Events, for more information.
[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]	The loan is subject to certain financial covenants (interest coverage and loan to value).
[4]	The loans were assumed in connection with the acquisition of Duke Realty's 20% interest in the 17 properties held by the Duke JV on March 1, 2013 and were recorded at estimated fair value which included a $13.5 million total premium.
[5]	These nine loans are cross-collateralized.
[6]	These five loans are cross-collateralized.
[7]	The loan was paid off in full on May 29, 2013.
[8]	The loan was paid off in full on May 1, 2013.
[9]	This loan was presented at fair value. The fair value adjustment to its cost basis was $(85) at December 31, 2012. We paid off this loan in full on October 9, 2013.
[10]	This loan was paid off in full on December 20, 2013.

Debt_Notes_Payable_Secured_by_1

Debt - Notes Payable Secured by Real Property (Footnotes) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Mar. 01, 2013	Dec. 31, 2012	Mar. 01, 2013
In Thousands, unless otherwise specified	SecurityLoan	SecurityLoan	Duke JV	Enclave on the Lake	Duke Portfolio
			Property		Duke JV
Debt Instrument [Line Items]	'	'	'	'	'
Percentage of interests acquired (percent)	'	'	'	'	20.00%
Number of properties acquired (properties)	'	'	17	'	'
Liabilities assumed	'	'	'	'	$13,500
Number of loan cross-collateralized by properties (properties)	9	5	'	'	'
Notes payable fair value adjustment amount	'	'	'	($85)	'

Debt_Notes_Payable_Unsecured_T

Debt - Notes Payable - Unsecured Term Loan Facilities (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Mar. 06, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 07, 2013

Mar. 07, 2013

Mar. 07, 2013

Dec. 31, 2013

Sep. 12, 2013

Sep. 12, 2013

Dec. 31, 2013

Sep. 12, 2013

Sep. 12, 2013

Dec. 31, 2013

Sep. 26, 2013

Sep. 26, 2013

Dec. 31, 2013

Sep. 26, 2013

Sep. 26, 2013

Sep. 26, 2013

Sep. 26, 2013

TD Bank

TD Term Loan (3)

TD Term Loan (3)

WF Term Loan 1

WF Term Loan 1

WF Term Loan 1

Capital One Term Loan (2)

Capital One Term Loan (2)

Capital One Term Loan (2)

Capital One Term Loan (2)

Capital One Term Loan (2)

Capital One Term Loan (2)

WF Term Loan 2 (2)

WF Term Loan 2 (2)

WF Term Loan 2 (2)

WF Term Loan 3 (2)

WF Term Loan 3 (2)

WF Term Loan 3 (2)

WF Term Loan 2 & WF Term Loan 3

WF Term Loan 2 & WF Term Loan 3

Minimum

Wells Fargo Bank

Weighted Average

Maximum

Capital One

Weighted Average

Minimum

Minimum

Maximum

Wells Fargo Bank

Weighted Average

Wells Fargo Bank

Weighted Average

Minimum

Maximum

TD Bank

Wells Fargo Bank

Wells Fargo Bank

Capital One

Capital One

Capital One

Capital One

Wells Fargo Bank

Wells Fargo Bank

Wells Fargo Bank

Wells Fargo Bank

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate (percent)

1.30%

1.60%

'

1.75%

'

'

'

'

1.75%

'

'

'

'

'

1.50%

'

'

1.50%

'

'

'

'

Unsecured Term Loan Facilities

$570,000

$0

$50,000

'

'

$200,000

'

'

'

$120,000

'

'

'

'

'

$200,000

'

'

$200,000

'

'

'

Interest rate swap (percent)

'

'

3.43%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of instrument

'

'

'7 years

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (percent)

'

'

0.75%

'

'

'

2.49%

'

'

'

4.42%

'

'

'

'

'

2.64%

'

'

3.27%

'

'

Leverage ratio contingent margin on interest rate

'

'

'

'

'

'

'

0.60%

'

'

'

'

-0.20%

0.35%

'

'

'

'

'

'

-0.20%

0.35%

Credit rating contingent margin on interest rate (percent)

'

'

'

'

0.40%

'

'

'

'

'

'

0.25%

-0.55%

-0.25%

'

'

'

'

'

'

'

-0.30%

Long Term Debt, LIBOR Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.17%

'

'

0.17%

'

'

'

'

Debt_Notes_Payable_Unsecured_C

Debt - Notes Payable - Unsecured Credit Facility (Details) (USD $)

12 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 06, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Sep. 26, 2013

Sep. 13, 2012

Sep. 13, 2012

Sep. 13, 2012

WF Term Loan 2 (2)

WF Term Loan 3 (2)

TD Term Loan (3)

TD Bank

Capital One Term Loan (2)

Minimum

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

TD Bank

Unspecified Group of Lenders

Unspecified Group of Lenders

Unspecified Group of Lenders

Unspecified Group of Lenders

TD Term Loan (3)

Minimum

Maximum

Line of Credit Facility [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on variable rate (percent)

1.30%

1.60%

1.50%

1.50%

1.75%

'

1.75%

'

'

'

'

'

'

'

Effective interest rate (percent)

'

'

2.49%

3.12%

'

3.28%

4.32%

'

1.47%

[1]

1.82%

[1]

'

'

'

'

Outstanding Borrowings

$570,000,000

'

$200,000,000

$200,000,000

$50,000,000

'

$120,000,000

'

$170,044,000

$265,000,000

'

'

'

'

Remaining Borrowing Capacity

'

'

'

'

'

'

'

'

679,956,000

435,000,000

'

'

'

'

Total Borrowing Capacity

'

'

'

'

'

'

'

'

$850,000,000

$700,000,000

$850,000,000

$700,000,000

'

'

Unused fee-annual rate

0.30%

0.30%

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Credit Rating Contingent Margin on Interest Rate

'

'

'

'

'

'

'

-0.40%

'

'

'

'

1.60%

1.30%

[1]

Calculated based on one-month LIBOR plus 1.30% and 1.60% as of December 31, 2013 and December 31, 2012, respectively.

Debt_Notes_Payable_Debt_Covena

Debt - Notes Payable - Debt Covenants and Restrictions (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 13, 2012	Sep. 26, 2013
		Revolving credit facility	Revolving credit facility	Unspecified Group of Lenders	Unspecified Group of Lenders
				Revolving credit facility	Revolving credit facility
Debt Instrument [Line Items]	'	'	'	'	'
Total Borrowing Capacity	'	$850,000,000	$700,000,000	$700,000,000	$850,000,000
Expiration period	'	'	'	'4 years	'
Extension period	'	'	'	'1 year	'
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	0.45	'	'	'
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	'	'	'	'

Debt_Minimum_Principal_Payment

Debt - Minimum Principal Payments Due for Notes Payable (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Fiscal Year Maturity	'
2014	$70,634
2015	148,476
2016	134,179
2017	46,355
2018	442,113
Thereafter	563,579
Total	$1,405,336

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
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Derivative [Line Items]	'		'
Period to reset variable rate on derivative	'90 days		'90 days
GBP LIBOR | Interest Rate Swap	'		'
Derivative [Line Items]	'		'
Notional Amount	23,161		22,698
Fair Value	-398		-1,015
Pay fixed rate (percent)	2.90%		2.90%
Maturity Date	10-Aug-14		'
GBP LIBOR | Interest Rate Swap | Terminated Interest Rate Swap, May 2013	'		'
Derivative [Line Items]	'		'
Notional Amount	'	[1]	9,160	[1]
Fair Value	'	[1]	-182	[1]
Pay fixed rate (percent)	'		4.90%	[1]
Maturity Date	NaN, NaN	[1]	'
GBP LIBOR | Interest Rate Swap | Terminated Interest Rate Swap, October 2013	'		'
Derivative [Line Items]	'		'
Notional Amount	'	[2]	9,280	[2]
Fair Value	'	[2]	-241	[2]
Pay fixed rate (percent)	'	[2]	3.40%	[2]
LIBOR | Interest Rate Swap	'		'
Derivative [Line Items]	'		'
Notional Amount	120,000		'
Fair Value	-1,515		'
Pay fixed rate (percent)	2.40%		'
Maturity Date	31-Jan-21		'
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on TD Term Loan	'		'
Derivative [Line Items]	'		'
Notional Amount	11,041	[3]	'
Fair Value	-205	[3]	'
Pay fixed rate (percent)	1.20%	[3]	'
Maturity Date	6-Dec-16	[3]	'
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Wells Fargo Term Loan	'		'
Derivative [Line Items]	'		'
Notional Amount	200,000	[4]	'
Fair Value	2,854	[4]	'
Pay fixed rate (percent)	0.80%	[4]	'
Maturity Date	7-Mar-18	[4]	'
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Atrium I Debt	'		'
Derivative [Line Items]	'		'
Notional Amount	22,516	[3]	'
Fair Value	-361	[3]	'
Pay fixed rate (percent)	1.60%	[3]	'
Maturity Date	31-May-18	[3]	'
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Easton III Debt	'		'
Derivative [Line Items]	'		'
Notional Amount	200,000		'
Fair Value	667		'
Pay fixed rate (percent)	1.40%		'
Maturity Date	15-Jan-19		'
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on Maskew Retail Park Debt	'		'
Derivative [Line Items]	'		'
Notional Amount	6,466	[3]	'
Fair Value	-86	[3]	'
Pay fixed rate (percent)	1.80%	[3]	'
Maturity Date	31-Jan-19	[3]	'
LIBOR | Interest Rate Swap | Qualifying Interest Rate Swap on TD Term Loan and WF Term Loan 1	'		'
Derivative [Line Items]	'		'
Notional Amount	50,000	[4]	'	[4]
Fair Value	1,690	[4]	'	[4]
Pay fixed rate (percent)	1.30%	[4]	'	[4]
Maturity Date	6-Mar-20	[4]	'
[1]	We terminated this interest rate swap in May 2013.
[2]	We terminated this interest rate swap in October 2013.
[3]	We assumed this swap in connection with the purchase of the Duke Portfolio on March 1, 2013. This swap is 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.
[4]	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 are 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.

Risk_Management_and_Use_of_Fin3

Risk Management and Use of Financial Instruments - Balance Sheet Location (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Derivatives designated as hedging instruments	'	'
Derivatives, Fair Value [Line Items]	'	'
Liability Derivatives	$2,565	'
Derivatives designated as hedging instruments | Prepaid Expenses and Other Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives	5,211	0
Derivatives designated as hedging instruments | Accounts Payable, Accrued Expenses and Other Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Liability Derivatives	'	1,015
Derivatives not designated as hedging instruments | Prepaid Expenses and Other Assets	'	'
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives	0	0
Derivatives not designated as hedging instruments | Accounts Payable, Accrued Expenses and Other Liabilities	'	'
Derivatives, Fair Value [Line Items]	'	'
Liability Derivatives	$0	$423

Risk_Management_and_Use_of_Fin4

Risk Management and Use of Financial Instruments - Cash Flow Hedges (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]	'	'	'
Net Settlement Payments On Interest Rate Swaps	($614,000)	$118,000	$303,000
Loss on Swap Termination Recognized in Loss from Early Extinguishment of Debt	0	-14,306,000	0
Cash flow hedge gain (loss) expected to be reclassified within twelve months	8,700,000	'	'
Derivatives Designated as Cash Flow Hedges:	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Gain (Loss) Recognized in Other Comprehensive Income (OCI) (Effective Portion)	-116,000	-7,024,000	-14,353,000
Loss Reclassified from AOCI into Interest Expense (Effective Portion)	-4,054,000	-4,267,000	-3,945,000
Loss Recognized in Interest Expense (Ineffective Portion and Amount Excluded from Effectiveness Testing)	-38,000	-17,000	0
Derivatives Not Designated as Cash Flow Hedges:	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Gain (Loss) Recognized in Other Comprehensive Income (OCI) (Effective Portion)	1,772,000	564,000	397,000
Net Settlement Payments On Interest Rate Swaps	-1,158,000	-682,000	-700,000
Loss Reclassified from AOCI into Interest Expense (Effective Portion)	($1,414,000)	$0	$0

Risk_Management_and_Use_of_Fin5

Risk Management and Use of Financial Instruments Risk Management and Use of Financial Instruments - Concentration of Credit Risk (Details) (Rental Revenue, Tenant Concentration Risk)	Dec. 31, 2013
	tenant
Rental Revenue | Tenant Concentration Risk	'
Concentration Risk [Line Items]	'
Concentration Risk, 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, 2013
In Thousands, unless otherwise specified
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]	'
2014	$203,378
2015	201,200
2016	182,463
2017	165,356
2018	153,550
Thereafter	514,457
Total	$1,420,404

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		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 (percent)	0.50%	0.50%		'		'		'
Investment management fee of the aggregate monthly net operating income (percent)	5.00%	5.00%		'		'		'
Percentage of acquisition fee (percent)	1.50%	1.50%		'		'		'
Percentage of purchase price of real estate investments acquired for calculating maximum acquisition consulting fees (percent)	6.00%	6.00%		'		'		'
Percentage of funds advanced with respect to mortgages for calculating maximum acquisition consulting fees (percent)	6.00%	6.00%		'		'		'
Investment Advisory, Management and Administrative Fees [Abstract]	'	'		'		'		'
Investment Management Fees	'	489,000		29,695,000		21,004,000		'
Transition Services Agreement Fees	'	686,000		2,500,000		0		'
Acquisition-Related Fees	400,000	1,895,000		5,159,000		12,603,000		'
Property Management Fees	'	1,128,000	[1]	1,556,000	[1]	1,470,000	[1]	'
Leasing Commissions	'	836,000	[1]	876,000	[1]	1,952,000	[1]	'
Construction Supervision and Management Fees	'	873,000	[1]	1,049,000	[1]	154,000	[1]	'
Brokerage Fees	'	585,000	[2]	388,000	[2]	111,000	[2]	'
Mortgage Banking Fees and Other	'	0		26,000		2,440,000		'
Total	'	6,492,000		41,249,000		39,734,000		'
Brokerage fee calculation option, portion of the competitive real estate commission (percent)	'	50.00%		'		'		'
Brokerage fee calculation option, percent of the sales price of each property sold (percent)	'	3.00%		'		'		'
Percentage of sales price of property for calculating maximum aggregate brokerage commission (percent)	6.00%	6.00%		'		'		'
Percentage of acquisition fee (percent)	0.75%	0.75%		'		'		'
Investment Advisor	'	'		'		'		'
Investment Advisory, Management and Administrative Fees [Abstract]	'	'		'		'		'
Accounts payable to related parties, current	600,000	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 (percent)	2.00%	2.00%		'		'		'
Maximum	'	'		'		'		'
Investment Advisory, Management and Administrative Fees [Abstract]	'	'		'		'		'
Percentage of gross revenues received from property for calculating consulting services fees (percent)	5.00%	5.00%		'		'		'
Subsequent Event	'	'		'		'		'
Investment Advisory, Management and Administrative Fees [Abstract]	'	'		'		'		'
Acquisition related fees	'	$200,000		'		'		'
[1]	Such fees for each service ranged from 2.0% to 5.0% of gross revenues received from a property that we owned.
[2]	The brokerage fee upon the sale of properties was an amount equal to the lesser of (i) one-half of the competitive real estate commission or (ii) 3% of the sales price of each property sold. The total brokerage commission paid did not exceed the lesser of the competitive real estate commission or an amount equal to 6% of the sales price of the property.

NonControlling_Interest_Detail

Non-Controlling Interest (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 19, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 17, 2013	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified	Parent	Parent	Parent	REIT Holdings	REIT Holdings	REIT Holdings	Capital Unit, Class B	Capital Unit, Class B
				Noncontrolling Interest	Noncontrolling Interest	Noncontrolling Interest	REIT Holdings	REIT Holdings
Noncontrolling Interest [Line Items]	'	'	'	'	'	'	'	'
Ownership Percentage Held By Other Party	'	'	'	'	0.10%	0.13%	'	'
Interest owned (percent)	100.00%	99.90%	99.87%	'	'	'	'	'
Number of unit in limited partnership (shares)	'	'	'	'	246,361	246,361	'	'
Stock redeemed or called during period (shares)	'	'	'	246,361	'	'	'	'
Payments for repurchase of redeemable of noncontrolling interest	'	'	'	$2.20	'	'	'	'
Percentage of amount received to net sales proceeds (percent)	'	'	'	'	'	'	'	15.00%
Uncompounded return on capital contributions (percent)	'	'	'	'	'	'	'	7.00%
Number of trading days for determination of market value of common share	'	'	'	'	'	'	'30 days	'

Equity_Incentive_Plan_and_Perf2

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

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

21-May-13

Mar. 15, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

21-May-13

Mar. 15, 2013

Sep. 25, 2012

Dec. 31, 2012

Mar. 15, 2013

Dec. 31, 2013

Dec. 31, 2013

Feb. 07, 2013

Jun. 17, 2011

Feb. 07, 2013

Feb. 07, 2013

employee

Executive Officers and Other Senior Management

Executive Officers and Other Senior Management

Executive Officers and Other Senior Management

Executive Officers and Other Senior Management

Employees

Named Executive Officers and Our Employees

2013 Equity Incentive Plan

2004 Equity Incentive Plan

2004 Equity Incentive Plan

2004 Equity Incentive Plan

2004 Equity Incentive Plan

Restricted Stock

Restricted Stock

Restricted Stock

Mr. Black

Messrs. Orphanides and Salvatore

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common shares available for grant (shares)

'

'

'

'

'

'

'

'

'

'

'

4,597,500

'

'

'

'

Value of shares issued

'

'

'

'

'

'

'

$3,000,000

'

'

'

'

'

$9,200

$100,000

$25,000

Stock based compensation expense

'

'

5,713,000

[1]

445,000

[1]

28,000

[1]

'

'

'

'

'

'

'

150,000

27,600

'

'

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

'

'

'

'

'

'

281,625

300,000

'

117,300

'

'

'

1,000

'

'

Number of employees granted restricted common shares (employees)

'

21

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting description

'

'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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service vesting period

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated forfeiture rate (percent)

'

5.00%

'

'

'

'

'

5.00%

'

'

'

'

'

'

'

'

Stock based compensation expense

'

'

'

'

'

'

'

'

245,000

'

1,000,000

'

'

'

'

'

Common shares granted (shares)

'

'

'

'

'

375,000

'

'

'

'

'

'

'

'

'

'

Shares vested period

'July 10, 2013

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common shares granted to employees (shares)

27,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compensation expense

'

'

$3,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Price of restricted common shares (usd per shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

$9.20

'

'

[1]

Compensation Expense includes expenses incurred in our 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 $)	12 Months Ended
	Dec. 31, 2013
Time-Based Restricted Stock	'
Shares	'
Nonvested, Beginning Balance (shares)	300,000
Granted (shares)	398,925
Vested (shares)	-100,000
Canceled (shares)	0	[1]
Nonvested, Beginning Balance (shares)	598,925
Weighted-Average Grant Date Fair Value per Share	'
Nonvested, Beginning Balance (usd per share)	$10
Granted (usd per share)	$10
Vested (usd per share)	$10
Canceled (usd per share)	$0	[1]
Nonvested, Ending Balance (usd per share)	$10
Vested	'
Beginning Balance (shares)	0
Granted (shares)	0
Vested (shares)	100,000
Canceled (shares)	-33,515	[1]
Ending Balance (shares)	66,485
Performance Based Restricted Shares	'
Shares	'
Nonvested, Beginning Balance (shares)	375,000
Granted (shares)	27,500
Vested (shares)	-402,500
Canceled (shares)	0
Nonvested, Beginning Balance (shares)	0
Weighted-Average Grant Date Fair Value per Share	'
Nonvested, Beginning Balance (usd per share)	$10
Granted (usd per share)	$8.90
Vested (usd per share)	$9.92
Canceled (usd per share)	$0
Nonvested, Ending Balance (usd per share)	$0
Vested	'
Beginning Balance (shares)	0
Granted (shares)	0
Vested (shares)	402,500
Canceled (shares)	-144,563
Ending Balance (shares)	257,937
2013 Equity Incentive Plan | Time-Based Restricted Stock	'
Vested	'
Canceled (shares)	-33,515	[1]
2013 Equity Incentive Plan | Performance Based Restricted Shares	'
Vested	'
Canceled (shares)	-144,563
[1]	common shares were tendered in accordance with the terms of the 2013 equity incentive plan to satisfy minimum federal and 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
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Stock based compensation expense	$5,713,000	[1]	$445,000	[1]	$28,000	[1]
Unamortized Compensation Costs	4,444,000		6,167,000		0
Units available for the future awards	4,597,500	[2]	19,298,000	[2]	19,973,000	[2]
Listed	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Stock based compensation expense	$3,800,000		'		'
[1]	Compensation Expense includes expenses incurred in our Listing Expense totaling $3.8 million.
[2]	Shares available for the future awards includes units under the 2013 equity incentive plan, which was the successor to the amended and restated 2004 equity incentive plan.

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	Nov. 06, 2013	Jul. 08, 2013	Jun. 23, 2013	Dec. 31, 2011
Equity [Abstract]	'	'	'	'	'	'	'	'
Authorized aggregate number of shares (shares)	'	'	1,000,000,000	'	'	'	'	'
Common Shares of Beneficial Interest, shares authorized (shares)	'	'	990,000,000	990,000,000	'	'	'	'
Common shares, par value (usd per share)	'	'	$0.01	$0.01	'	'	'	$0.01
Preferred shares under beneficial interest (shares)	'	'	10,000,000	'	'	'	'	'
Preferred stock, par value (usd per share)	'	'	$0.01	'	'	'	'	'
Tender offer from shareholders	$125,000,000	$125,000,000	$125,000,000	'	'	'	'	'
Stock repurchased and retired during period (shares)	12,376,237	'	'	'	'	'	'	'
Common stock purchase price per share (usd per share)	'	'	'	'	'	'	$10.10	'
Number of share issued to dividend reinvestment plan (shares)	'	8,869,829	'	'	'	'	'	'
Proceeds from Additional Paid-in-Capital—Public Offering	'	84,300,000	'	'	'	'	'	'
Repurchased of common shares (shares)	'	'	4,996,935	5,648,490	'	'	'	'
Repurchased of common shares amount	'	'	47,400,000	52,900,000	'	'	'	'
Common Stock, Fractional Shares, Eliminated	'	'	'	'	'	14,501	'	'
Common Stock, At The Market Offering, Offering Price, Total	'	'	'	'	$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, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Beginning balance	($8,587)	($23,664)	($11,686)
Other Comprehensive Income (Loss) Before Reclassifications	9,129	15,077	-11,978
Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	4,054	'	'
Ending balance	4,596	-8,587	-23,664
Foreign Currency Translation Gain (Loss)	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Beginning balance	-6,164	-10,579	-9,758
Other Comprehensive Income (Loss) Before Reclassifications	7,834	4,415	-821
Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	0	'	'
Ending balance	1,670	-6,164	-10,579
Swap Fair Value Adjustment	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Beginning balance	-2,423	-13,085	-1,928
Other Comprehensive Income (Loss) Before Reclassifications	1,295	10,662	-11,157
Amounts Reclassified from Accumulated Other Comprehensive Income to Interest Expense	4,054	'	'
Ending balance	$2,926	($2,423)	($13,085)

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments and Investments - Additional Information (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]	'	'
Mortgage note payable market interest rate (percent)	'	3.02%
Period to reset variable rate on derivative	'90 days	'90 days

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, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financial Assets (Liabilities)	'	'
Class B Interest	$0	($200)
Total Fair Value | Fair Value, Measurements, Recurring	'	'
Financial Assets (Liabilities)	'	'
Cash and Cash Equivalents	1,069	6,495
Interest Rate Swaps Not Designated as Cash Flow Hedges - Liabilities	'	-423
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	5,211	'
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	-2,565	-1,015
Investment in CBRE Strategic Partners Asia	9,676	8,098
Secured Notes Payable - Albion Mills	'	-9,288
Class B Interest	'	-200
Quoted Markets Prices (Level 1) | Fair Value, Measurements, Recurring	'	'
Financial Assets (Liabilities)	'	'
Cash and Cash Equivalents	1,069	6,495
Interest Rate Swaps Not Designated as Cash Flow Hedges - Liabilities	'	0
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	0	'
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	0	0
Investment in CBRE Strategic Partners Asia	0	0
Secured Notes Payable - Albion Mills	'	0
Class B Interest	'	0
Significant Observable Inputs (Level 2) | Fair Value, Measurements, Recurring	'	'
Financial Assets (Liabilities)	'	'
Cash and Cash Equivalents	0	0
Interest Rate Swaps Not Designated as Cash Flow Hedges - Liabilities	'	-423
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	5,211	'
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	-2,565	-1,015
Investment in CBRE Strategic Partners Asia	0	0
Secured Notes Payable - Albion Mills	'	0
Class B Interest	'	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring	'	'
Financial Assets (Liabilities)	'	'
Cash and Cash Equivalents	0	0
Interest Rate Swaps Not Designated as Cash Flow Hedges - Liabilities	'	0
Interest Rate Swaps Designated as Cash Flow Hedges - Assets	0	'
Interest Rate Swaps Designated as Cash Flow Hedges - Liabilities	0	0
Investment in CBRE Strategic Partners Asia	9,676	8,098
Secured Notes Payable - Albion Mills	'	-9,288
Class B Interest	'	($200)

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, 2013	Dec. 31, 2012
Investment in CBRE Strategic Partners Asia	'	'
Beginning Balance, Investment in CBRE Strategic Partners Asia	$8,098	$8,381
Contributions, Investment in CBRE Strategic Partners Asia	0	2,030
Distributions, Investment in CBRE Strategic Partners Asia	0	-2,400
Total Income (Loss) on Fair Value Adjustment, Investment in CBRE Strategic Partners Asia	1,578	87
Translation Adjustment in Other Comprehensive Income, Investment in CBRE Strategic Partners Asia	0	0
Ending Balance, Investment in CBRE Strategic Partners Asia	9,676	8,098
Secured debt - Albion Mills	'	'
Beginning Balance, Note Payable	-9,288	-8,775
Contributions, Note Payable	9,341	0
Distributions, Note Payable	0	0
Total Income (Loss) on Fair Value Adjustment, Note Payable	-80	-111
Translation Adjustment in Other Comprehensive Income, Note Payable	27	-402
Ending Balance, Note Payable	$0	($9,288)

Fair_Value_of_Financial_Instru5

Fair Value of Financial Instruments and Investments - Summary of Notes Payable and Estimated Fair Value (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Secured Notes Payable, Net	$681,200		$502,232
Unsecured Credit Facility	570,000		'
Book Value | Secured Debt	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Secured Notes Payable, Net	681,200	[1]	492,944	[1]
Secured Notes Payable - Albion Mills	'		9,288	[2]
Total Secured Notes Payable	681,200		502,232
Book Value | Unsecured Debt	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Unsecured Term Loan Facilities	570,000	[2]	0	[2]
Unsecured Credit Facility	170,044		265,000
Fair Value | Secured Debt	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Secured Notes Payable, Net	721,728	[1]	514,451	[1]
Secured Notes Payable - Albion Mills	0	[2]	9,288	[2]
Total Secured Notes Payable	721,728		523,739
Fair Value | Unsecured Debt	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Unsecured Term Loan Facilities	570,272	[2]	0	[2]
Unsecured Credit Facility	170,044		265,000
3660 Deerpark Boulevard	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Secured Notes Payable, Net	'		6,506	[3]
3660 Deerpark Boulevard | Book Value | Secured Debt	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Secured Notes Payable - Albion Mills	$0	[3]	'
[1]	Items are measured using Level 2 inputs.
[2]	tems are measured using Level 3 inputs. For purposes of this fair value disclosure, we based our fair value estimate for notes payable on our internal valuation that includes a representative sample of our lenders' market interest rate quotes as of December 31, 2013 and December 31, 2012 for debt with similar risk characteristics and maturities. We based our notes payable secured by our Albion Mills property carried at fair value on a third party appraiser's valuation, which used similar techniques as our internal valuation model as of December 31, 2012.
[3]	This loan was paid off in full on December 20, 2013.

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2013
	renewal_option
Commitments and Contingencies Disclosure [Abstract]	'
Number of lease renewal options (renewal options)	3
Lease agreement period	'10 years

Commitments_and_Contingencies_2

Commitments and Contingencies - Maturity of Ground Lease (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2014	$273
2015	273
2016	273
2017	273
2018	276
Thereafter	4,782
Total	$6,150

Segment_Disclosure_Narrative_D

Segment Disclosure - Narrative (Details)	12 Months Ended
	Dec. 31, 2013
	segment
Segment Reporting [Abstract]	'
Number of reportable segments (segments)	3

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, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Rental	'	'	'	'	'	'	'	'	$196,706	$145,432	$119,081
Tenant Reimbursements	'	'	'	'	'	'	'	'	53,306	33,411	26,735
Total Revenues	65,238	64,786	66,556	53,432	45,452	46,474	44,198	42,719	250,012	178,843	145,816
Property and Related Expenses:	'	'	'	'	'	'	'	'	'	'	'
Real Estate Taxes	'	'	'	'	'	'	'	'	37,971	22,636	17,650
Total Expenses	'	'	'	'	'	'	'	'	210,983	176,839	137,698
Net Operating Income	'	'	'	'	'	'	'	'	180,820	134,743	108,975
Operating Segments | Domestic Industrial Properties - Continuing Operations	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Rental	'	'	'	'	'	'	'	'	54,256	42,360	30,030
Tenant Reimbursements	'	'	'	'	'	'	'	'	15,848	8,861	6,466
Total Revenues	'	'	'	'	'	'	'	'	70,104	51,221	36,496
Property and Related Expenses:	'	'	'	'	'	'	'	'	'	'	'
Property Operating	'	'	'	'	'	'	'	'	4,299	3,196	2,736
Real Estate Taxes	'	'	'	'	'	'	'	'	14,004	7,621	6,102
Total Expenses	'	'	'	'	'	'	'	'	18,303	10,817	8,838
Net Operating Income	'	'	'	'	'	'	'	'	51,801	40,404	27,658
Operating Segments | Domestic Office Properties	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Rental	'	'	'	'	'	'	'	'	136,663	97,164	83,897
Tenant Reimbursements	'	'	'	'	'	'	'	'	37,177	24,314	20,058
Total Revenues	'	'	'	'	'	'	'	'	173,840	121,478	103,955
Property and Related Expenses:	'	'	'	'	'	'	'	'	'	'	'
Property Operating	'	'	'	'	'	'	'	'	26,433	17,528	15,248
Real Estate Taxes	'	'	'	'	'	'	'	'	23,967	15,015	11,548
Total Expenses	'	'	'	'	'	'	'	'	50,400	32,543	26,796
Net Operating Income	'	'	'	'	'	'	'	'	123,440	88,935	77,159
Operating Segments | International Office/Retail Properties	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Rental	'	'	'	'	'	'	'	'	5,787	5,908	5,154
Tenant Reimbursements	'	'	'	'	'	'	'	'	281	236	211
Total Revenues	'	'	'	'	'	'	'	'	6,068	6,144	5,365
Property and Related Expenses:	'	'	'	'	'	'	'	'	'	'	'
Property Operating	'	'	'	'	'	'	'	'	489	740	1,207
Total Expenses	'	'	'	'	'	'	'	'	489	740	1,207
Net Operating Income	'	'	'	'	'	'	'	'	$5,579	$5,404	$4,158

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, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation to Consolidated Net Income (Loss)	'	'	'	'	'	'	'	'	'	'	'
Total Segment Net Operating Income	'	'	'	'	'	'	'	'	$180,820	$134,743	$108,975
Expenses:	'	'	'	'	'	'	'	'	'	'	'
General and Administrative	'	'	'	'	'	'	'	'	23,138	14,660	5,132
Investment Management Fee	'	'	'	'	'	'	'	'	489	29,695	20,908
Acquisition-Related	'	'	'	'	'	'	'	'	2,690	7,752	14,464
Depreciation and Amortization	'	'	'	'	'	'	'	'	102,793	72,383	60,353
Transition and Listing	'	'	'	'	'	'	'	'	12,681	8,249	0
Gross Loss	'	'	'	'	'	'	'	'	39,029	2,004	8,118
OTHER INCOME AND EXPENSES	'	'	'	'	'	'	'	'	'	'	'
Interest and Other Income	'	'	'	'	'	'	'	'	1,321	2,235	1,607
Interest Expense	'	'	'	'	'	'	'	'	-47,295	-33,845	-33,261
Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	'	'	'	'	'	'	'	'	614	-118	-303
Interest Expense and Net Change in Fair Value of Non-Qualifying Derivative Financial Instruments	'	'	'	'	'	'	'	'	1,772	564	397
Loss on Early Extinguishment of Debt	'	'	'	'	'	'	'	'	-1,051	-17,284	-108
Gain on Conversion of Equity Interest to Controlling Interest	'	'	'	'	'	'	'	'	75,763	0	0
Income (Loss) Before Provision for Income Taxes and Equity in Income of Unconsolidated Entities	-644	-2,525	-6,154	77,704	-28,216	-13,358	-2,610	-2,824	68,381	-47,008	-23,947
Provision For Income Taxes	'	'	'	'	'	'	'	'	-287	-266	-456
Equity in Income of Unconsolidated Entities	'	'	'	'	'	'	'	'	12,111	3,959	3,590
NET INCOME (LOSS) FROM CONTINUING OPERATIONS	1,191	745	-3,730	81,999	-26,862	-12,506	-1,683	-2,264	80,205	-43,315	-20,813
Income from Discontinued Operations	'	'	'	'	'	'	'	'	382	720	1,227
DISCONTINUED OPERATIONS	'	'	'	'	'	'	'	'	'	'	'
Gain (Loss) on Sale of Real Estate	'	'	'	'	'	'	'	'	2,759	-413	301
Income From Discontinued Operations	2,846	114	90	91	291	122	-216	110	3,141	307	1,528
NET INCOME (LOSS)	$4,037	$859	($3,640)	$82,090	($26,571)	($12,384)	($1,899)	($2,154)	$83,346	($43,008)	($19,285)

Segment_Disclosure_Condensed_A

Segment Disclosure - Condensed Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Total Assets	$3,010,596	$2,554,862
Domestic Industrial Properties - Continuing Operations	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Total Assets	725,566	678,930
Domestic Office Properties	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Total Assets	1,601,513	1,077,328
International Office/Retail Properties	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Total Assets	88,571	105,502
Non-Segment Assets	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Total Assets	594,946	616,276
Variable Interest Entity	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Total Assets	$0	$76,826

Segment_Disclosure_Segment_Dis

Segment Disclosure Segment Disclosure-Capital Expenditures (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Capital Expenditures	$592,355	$325,232
Domestic Industrial Properties - Continuing Operations	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Capital Expenditures	82,274	239,470
Domestic Office Properties	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Capital Expenditures	510,081	28,914
International Office/Retail Properties	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Capital Expenditures	0	668
Non-Segment Construction in Progress and Other Assets—Variable Interest Entity	'	'
Segment Reporting, Asset Reconciling Item [Line Items]	'	'
Capital Expenditures	$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, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Income (Loss) from Continuing Operations	$1,191	$745	($3,730)	$81,999	($26,862)	($12,506)	($1,683)	($2,264)	$80,205	($43,315)	($20,813)
Net (Income) Loss Attributable to Non-Controlling Operating Partnership Units	'	'	'	'	'	'	'	'	-82	32	26
Allocation to Participating Securities (Nonvested Time-Based Shares)	'	'	'	'	'	'	'	'	-360	-90	0
Numerator for Basic and Diluted Income (Loss) from Continuing Operations	'	'	'	'	'	'	'	'	79,763	-43,373	-20,787
Income from Discontinued Operations	2,846	114	90	91	291	122	-216	110	3,141	307	1,528
Numerator for Basic and Diluted Income (Loss) Available to Common Shareholders	'	'	'	'	'	'	'	'	$82,904	($43,066)	($19,259)
Basic Weighted Average Vested Shares Outstanding (shares)	'	'	'	'	'	'	'	'	242,379,680	248,154,277	192,042,918
Diluted Weighted Average Vested Shares Outstanding (shares)	'	'	'	'	'	'	'	'	242,379,680	248,154,277	192,042,918
Income (Loss) from Continuing Operations Available to Common Shareholders per Share (in usd per share)	$0.02	$0	($0.01)	$0.33	($0.11)	($0.05)	($0.01)	($0.01)	$0.33	($0.17)	($0.11)
Income (Loss) from Discontinued Operations Available to Common Shareholders per Share (in usd per share)	'	'	'	'	'	'	'	'	$0.01	$0	$0.01
Basic and Diluted Net Income (Loss) Per Share Attributable to Common Shareholders (in usd per share)	'	'	'	'	'	'	'	'	$0.34	($0.17)	($0.10)
Potentially dilutive performance-based shares (shares)	'	'	'	'	'	'	'	'	375,000	'	'

Distributions_Details

Distributions (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'
Distributions declared per common share (usd per share)	$0.55	$0.60	$0.60
Less: Distributions declared in the current period, and paid in the subsequent period (usd per share)	($0.04)	($0.15)	($0.15)
Add: Distributions declared in the prior year, and paid in the current year (usd per share)	$0.15	$0.15	$0.15
Distributions paid per common share (usd per share)	$0.66	$0.60	$0.60
Distributions to shareholders	$159.60	$144.30	$106.40

DistributionsIncome_Tax_Treatm

Distributions-Income Tax Treatment for Distributions Declared (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Schedule Of Group Distributions [Line Items]	'		'		'
Distributions declared per common share (usd per share)	$0.55		$0.60		$0.60
Distributions declared per common share percentage (percent)	100.00%		100.00%		100.00%
Common Stock, Dividends, Per Share, Cash Paid	$0.66		$0.60		$0.60
Percentage of comprised return of capital (percent)	'		'		59.60%	[1]
Percent of qualified dividend income (percent)	'		'		0.50%	[1]
Ordinary Income	'		'		'
Schedule Of Group Distributions [Line Items]	'		'		'
Distributions declared per common share (usd per share)	$0.29		$0.09		$0.24
Distributions declared per common share percentage (percent)	44.10%		14.50%		39.90%
Return of Capital	'		'		'
Schedule Of Group Distributions [Line Items]	'		'		'
Distributions declared per common share (usd per share)	$0.36		$0.51		$0.36
Distributions declared per common share percentage (percent)	54.80%		85.50%		60.10%	[1]
Capital Gain (2)	'		'		'
Schedule Of Group Distributions [Line Items]	'		'		'
Distributions declared per common share (usd per share)	$0.01	[2]	$0	[2]	$0	[2]
Distributions declared per common share percentage (percent)	1.10%	[2]	0.00%	[2]	0.00%	[2]
[1]	This percentage is comprised of return of capital at 59.6% and qualified dividend income at 0.5%.
[2]	Capital gains are comprised entirely of unrecaptured Section 1250 gains.

Quarterly_Financial_Informatio2

Quarterly Financial Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Revenues from Continuing Operations	$65,238	$64,786	$66,556	$53,432	$45,452	$46,474	$44,198	$42,719	$250,012	$178,843	$145,816
Net Operating Income (Loss) from Continuing Operations	-644	-2,525	-6,154	77,704	-28,216	-13,358	-2,610	-2,824	68,381	-47,008	-23,947
Net Income (Loss) from Continuing Operations	1,191	745	-3,730	81,999	-26,862	-12,506	-1,683	-2,264	80,205	-43,315	-20,813
Income from Discontinued Operations	2,846	114	90	91	291	122	-216	110	3,141	307	1,528
Net Income (Loss)	4,037	859	-3,640	82,090	-26,571	-12,384	-1,899	-2,154	83,346	-43,008	-19,285
Net Income (Loss) Attributable to Common Shareholders	$4,037	$856	($3,636)	$82,007	($26,546)	($12,379)	($1,899)	($2,152)	$83,264	($42,976)	($19,259)
Net Income (Loss) per common share-basic and diluted (usd per share)	$0.02	$0	($0.01)	$0.33	($0.11)	($0.05)	($0.01)	($0.01)	$0.33	($0.17)	($0.11)

Subsequent_Events_Additional_D

Subsequent Events - Additional Details (Details)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Dec. 17, 2013

Dec. 11, 2013

Nov. 08, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Feb. 26, 2014

Jan. 29, 2014

Jan. 16, 2014

Jan. 02, 2014

Jan. 29, 2014

Jan. 29, 2014

Jan. 29, 2014

Jan. 29, 2014

Jan. 29, 2014

Feb. 26, 2014

Jan. 02, 2014

Jan. 16, 2014

Dec. 31, 2013

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Subsequent Event

Subsequent Event

Subsequent Event

445 Airtech Parkway

Charles Black

James Orphanides

Louis Salvatore

James Francis

Mark Brugger

Martin Reid

Secured Debt

Duke JV

Duke JV

USD ($)

USD ($)

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Subsequent Event

Avion III & IV

Subsequent Event

Subsequent Event

USD ($)

Subsequent Event

USD ($)

USD ($)

sqft

USD ($)

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to acquire real estate

€ 70,500,000

'

'

$115,377,000

$266,491,000

$192,899,000

'

'

'

$30,200,000

'

'

'

'

'

'

'

'

'

Area occupied in square foot (sqft)

'

'

'

'

'

'

'

'

'

622,400

'

'

'

'

'

'

'

'

'

Percentage of leased property (percent)

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

Repayments of Notes Payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

'

'

Sales of Real Estate

'

40,000,000

11,000,000

'

'

'

'

'

10,200,000

'

'

'

'

'

'

'

'

13,000,000

13,100,000

Gains (Losses) on Sales of Investment Real Estate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$300,000

'

Common shares granted (shares)

'

'

'

'

'

'

'

33,100

'

'

20,000

5,000

5,000

1,550

1,550

'

'

'

'

Distributions declared per common share (usd per share)

'

'

'

$0.55

$0.60

$0.60

$0.04

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Awards, Restricted Stock, Number of Shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

90,000

'

'

'

Schedule_IIISchedule_of_Invest1

Schedule III-Schedule of Investments in Real Estate (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013		Dec. 31, 2013
In Thousands, unless otherwise specified					Building and Building Improvements	Minimum	Maximum	REMEC Corporate Campus		300 Constitution		Deerfield Commons I		Deerfield Commons II		660 North Dorothy		505 Century		631 International		602 Central Blvd.		Bolingbrook Point III		Fairforest Bldg. 5		Fairforest Bldg. 6		Fairforest Bldg. 7		HJ Park Bldg. 1		North Rhett I		North Rhett II		North Rhett III		North Rhett IV		Jedburg Commerce Park		Mount Holly Bldg.		Orangeburg Park Bldg.		Kings Mt. I		Kings Mt. II		Kings Mt. III		Union Cross Bldg. I		Union Cross Bldg. II		Lakeside Office Center		Thames Valley		Enclave on the Lake		Fairforest Bldg. 1		Fairforest Bldg. 2		Fairforest Bldg. 3		Fairforest Bldg. 4		Highway 290 Commerce Pk Bldg. 1		Highway 290 Commerce Pk Bldg. 2		Highway 290 Commerce Pk Bldg. 5		Highway 290 Commerce Pk Bldg. 6		Highway 290 Commerce Pk Bldg. 7		Orchard Business Park 2		Greenville/Spartanburg Ind. Pk		Community Cash Complex 1		Community Cash Complex 2		Community Cash Complex 3		Community Cash Complex 4		Community Cash Complex 5		Avion III & IV		Maskew Retail Park		13201 Wilfred Lane		3011, 3055 & 3077 Comcast Place		140 Depot Street		12650 Ingenuity Drive		Crest Ridge Corporate Center I		West Point Trade Center		5160 Hacienda Drive		10450 Pacific Center Court		225 Summit Avenue		One WaySide Road		100 Tice Blvd.		Ten Parkway North		Pacific Corporate Park		4701 Gold Spike Drive		1985 International Way		3660 Deerpark Boulevard		Tolleson Commerce Park II		100 Kimball Drive		70 Hudson Street		90 Hudson Street		Millers Ferry Road		Sky Harbor Operations Center		Aurora Commerce Center Bldg. C		Sabal Pavilion		Atwater		2400 Dralle Road		Midwest Commerce Center I		20000 S. Diamond Lake Road		Gateway at Riverside		Gateway II at Riverside		701 & 801 Charles Ewing Blvd		Mid-Atlantic Distribution Center - Bldg A		Carpenter Corporate Center I & II		1200 Woods Chapel Road		1400 Perimeter Park Drive		3900 North Paramount Parkway		3900 South Paramount Parkway		Point West I		22535 Colonial Pkwy		Atrium I		Easton III		Landings I		Landings II		McAuley Place		Miramar I		Miramar II		Northpoint III		Celebration Office Center		Goodyear Crossing II		Norman Pointe I		Norman Pointe II
						Site Improvements	Site Improvements
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'	'	'	'	'	'	'	'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'		'
Encumbrance Net	$681,200	'	'	'	'	'	'	$0		$0		$9,290		$0		$0		$0		$0		$0		$7,900		$8,213		$2,028		$0		$0		$2,342		$1,561		$0		$8,126		$0		$1,561		$1,588		$1,356		$3,924		$0		$2,050		$6,255		$8,743		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$0		$19,885		$23,160		$0		$0		$0		$11,686		$0		$0		$0		$0		$0		$24,723		$41,121		$11,777		$0		$10,154		$7,055		$7,294		$4,386		$0		$117,666		$106,815		$0		$0		$0		$0		$0		$0		$0		$6,388		$0		$0		$0		$0		$0		$0		$2,446		$8,073		$8,075		$11,041		$8,336		$22,516		$6,466		$17,195		$15,152		$13,472		$9,607		$12,944		$10,784		$9,296		$20,583		$22,790		$25,377
Land	444,024	'	'	'	'	'	'	11,862		5,591		2,053		2,262		1,576		950		923		5,093		2,423		1,788		1,181		660		575		1,290		539		631		2,433		4,029		1,012		544		508		774		1,183		852		1,658		4,328		6,672		4,056		335		396		608		661		704		1,131		421		572		1,233		173		460		867		887		205		132		138		6,810		17,612		2,274		7,013		3,560		3,520		4,624		5,843		8,100		5,000		7,100		7,500		7,300		3,500		21,128		3,500		2,200		2,400		2,200		8,800		55,300		56,400		5,835		0		2,600		3,900		6,851		11,706		6,665		1,976		6,940		2,318		2,376		7,033		5,901		1,560		765		861		1,062		3,616		1,336		4,131		2,164		1,689		1,434		1,467		11,572		9,841		3,157		4,892		7,471		3,369		1,483
Acquisition costs, site improvements	216,920	'	'	'	'	'	'	0		0		934		0		417		304		238		268		522		2,462		506		463		468		366		144		209		1,716		3,026		1,050		641		362		1,351		1,647		759		1,576		817		979		10,230		107		122		231		331		219		363		162		176		510		62		200		175		136		16		15		15		1,179		1,134		412		998		1,172		397		335		2,925		740		724		978		517		1,048		276		47,023		384		396		438		567		1,270		8,885		9,968		8,755		20,848		1,125		1,394		11,583		4,732		10,517		884		6,597		253		3,832		3,578		1,160		2,373		541		525		650		1,888		992		1,990		1,591		1,229		877		637		2,280		1,857		1,510		1,529		2,919		1,089		1,124
Acquisition costs, building and improvements	1,450,387	'	'	'	'	'	'	8,933		13,826		7,760		0		3,402		3,685		2,912		14,850		13,434		12,017		3,753		4,503		2,472		9,627		5,670		3,366		12,445		20,381		3,699		3,636		3,097		10,199		13,738		3,905		12,271		10,497		13,195		20,823		2,509		4,654		4,695		4,566		4,347		3,008		800		3,012		2,949		526		2,584		1,622		1,169		1,190		399		671		30,004		28,494		11,049		21,858		11,898		13,330		16,024		16,067		20,776		20,410		25,460		37,870		47,114		15,764		46,992		14,057		10,544		10,036		4,753		39,400		56,193		76,909		18,412		19,677		17,467		10,734		29,113		38,175		36,170		12,041		26,917		0		14,306		24,780		31,200		4,925		3,320		12,474		13,842		21,811		12,499		28,589		11,944		21,824		18,637		19,996		3,654		13,949		15,081		8,499		46,348		25,906		36,298
Acquisition costs, tenant improvements	133,607	'	'	'	'	'	'	3,217		733		1,363		0		199		119		285		0		164		100		459		0		12		428		26		18		91		149		18		93		166		958		0		27		65		1,140		80		1,197		6		2		14		10		8		24		4		0		1		0		2		0		3		22		0		0		1,105		0		129		7,739		158		1,517		3,174		368		1,693		1,061		2,240		2,442		2,231		1,368		14,810		96		33		67		62		2,946		3,470		3,198		688		4,565		254		1,656		30,719		912		597		55		475		0		2,268		385		3,588		58		332		688		552		1,339		862		3,559		1,246		1,529		1,009		1,901		2,457		2,056		1,165		657		492		1,615		4,818
Acquisition costs, total	2,244,938	'	'	'	'	'	'	24,012		20,150		12,110		2,262		5,594		5,058		4,358		20,211		16,543		16,367		5,899		5,626		3,527		11,711		6,379		4,224		16,685		27,585		5,779		4,914		4,133		13,282		16,568		5,543		15,570		16,782		20,926		36,306		2,957		5,174		5,548		5,568		5,278		4,526		1,387		3,760		4,693		761		3,246		2,664		2,195		1,433		546		824		39,098		47,240		13,864		37,608		16,788		18,764		24,157		25,203		31,309		27,195		35,778		48,329		57,693		20,908		129,953		18,037		13,173		12,941		7,582		52,416		123,848		146,475		33,690		45,090		21,446		17,684		78,266		55,525		53,949		14,956		40,929		2,571		22,782		35,776		41,849		8,916		4,958		14,548		16,106		28,654		15,689		38,269		16,945		26,271		21,957		24,001		19,963		27,703		20,913		15,577		57,230		31,979		43,723
Improvements Subsequent to Purchase Date	25,284	'	'	'	'	'	'	95		0		2,386		0		375		1,187		101		715		7		11		0		595		7		177		605		29		0		309		55		0		88		0		4,853		0		0		648		7		1,687		0		200		0		3,004		2		0		109		554		362		35		240		428		0		22		0		0		202		89		0		0		0		198		28		1,410		0		0		0		226		0		12		51		0		45		0		187		0		0		783		150		0		0		215		1		0		0		0		0		0		190		7		53		0		0		0		0		0		0		508		71		0		31		462		0		0		0		0		0		352		1,120
Total Cost	2,270,222	1,804,885	1,514,633	1,107,185	'	'	'	24,107		20,150		14,496		2,262		5,969		6,245		4,459		20,926		16,550		16,378		5,899		6,221		3,534		11,888		6,984		4,253		16,685		27,894		5,834		4,914		4,221		13,282		21,421		5,543		15,570		17,430		20,933		37,993		2,957		5,374		5,548		8,572		5,280		4,526		1,496		4,314		5,055		796		3,486		3,092		2,195		1,455		546		824		39,300		47,329		13,864		37,608		16,788		18,962		24,185		26,613		31,309		27,195		35,778		48,555		57,693		20,920		130,004		18,037		13,218		12,941		7,769		52,416		123,848		147,258		33,840		45,090		21,446		17,899		78,267		55,525		53,949		14,956		40,929		2,571		22,972		35,783		41,902		8,916		4,958		14,548		16,106		28,654		15,689		38,777		17,016		26,271		21,988		24,463		19,963		27,703		20,913		15,577		57,230		32,331		44,843
Accumulated Depreciation and Amortization	-195,778	-132,129	-88,084	-51,292	'	'	'	-4,549		-3,983		-4,729		0		-1,304		-1,393		-1,029		-2,730		-2,542		-3,092		-1,187		-1,313		-613		-2,147		-1,440		-650		-2,785		-4,743		-1,089		-953		-849		-2,718		-3,549		-967		-2,723		-2,877		-2,407		-6,761		-382		-760		-727		-747		-672		-549		-180		-520		-646		-128		-495		-782		0		-209		0		0		-5,484		-4,181		-1,463		-5,176		-1,763		-2,171		-3,263		-2,765		-2,743		-2,542		-3,268		-4,615		-4,814		-1,767		-18,524		-1,290		-974		-965		-633		-4,207		-7,371		-8,435		-2,824		-4,932		-1,167		-1,094		-4,078		-2,433		-2,272		-413		-1,274		-18		-823		-908		-515		-98		-127		-349		-383		-868		-435		-1,241		-519		-700		-708		-717		-451		-928		-518		-440		-1,214		-977		-2,021
Net Investments in Real Estate	$2,074,444	'	'	'	'	'	'	$19,558		$16,167		$9,767		$2,262		$4,665		$4,852		$3,430		$18,196		$14,008		$13,286		$4,712		$4,908		$2,921		$9,741		$5,544		$3,603		$13,900		$23,151		$4,745		$3,961		$3,372		$10,564		$17,872		$4,576		$12,847		$14,553		$18,526		$31,232		$2,575		$4,614		$4,821		$7,825		$4,608		$3,977		$1,316		$3,794		$4,409		$668		$2,991		$2,310		$2,195		$1,246		$546		$824		$33,816		$43,148		$12,401		$32,432		$15,025		$16,791		$20,922		$23,848		$28,566		$24,653		$32,510		$43,940		$52,879		$19,153		$111,480		$16,747		$12,244		$11,976		$7,136		$48,209		$116,477		$138,823		$31,016		$40,158		$20,279		$16,805		$74,189		$53,092		$51,677		$14,543		$39,655		$2,553		$22,149		$34,875		$41,387		$8,818		$4,831		$14,199		$15,723		$27,786		$15,254		$37,536		$16,497		$25,571		$21,280		$23,746		$19,512		$26,775		$20,395		$15,137		$56,016		$31,354		$42,822
SEC Schedule III, Real Estate and Accumulated Depreciation, Life Used for Depreciation	'	'	'	'	'39 years	'15 years	'25 years	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'39 years	[1]	'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, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]	'	'	'
Balance, beginning of the year	$1,804,885	$1,514,633	$1,107,185
Acquisitions	52,531	230,919	387,159
Disposition	-27,259	-3,715	-1,375
Improvements	10,056	2,688	9,282
Improvements—Variable Interest Entity	-72,742	60,360	12,382
Transfer from joint venture	502,751	0	0
Balance, end of the year	$2,270,222	$1,804,885	$1,514,633

Schedule_III_Depreciation_Roll

Schedule III- Depreciation Roll Forward (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]	'	'	'
SEC Schedule III, Real Estate Accumulated Depreciation	($132,129,000)	($88,084,000)	($51,292,000)
Additions	-65,565,000	-44,402,000	-36,863,000
Dispositions	1,916,000	357,000	71,000
Balance, end of the year	-195,778,000	-132,129,000	-88,084,000
Aggregate gross cost of our investments in real estate for U.S. Federal income tax purposes	$2,600,000,000	'	'