Columbia Property Trust (CXP) 10-Q7 Aug 142014 Q2 Quarterly reportFinancial data

Company Profile

Document_Entity_Information

Document Entity Information	6 Months Ended
Document Entity Information	Jun. 30, 2014	Jul. 31, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'COLUMBIA PROPERTY TRUST, INC.	'
Entity Central Index Key	'0001252849	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	124,969,182

Consolidated_Balance_Sheets_un

Consolidated Balance Sheets (unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets:	'	'
Land	$749,068	$706,938
Buildings and improvements, less accumulated depreciation of $641,687 and $604,497, as of June 30, 2014 and December 31, 2013, respectively	3,020,793	2,976,287
Intangible lease assets, less accumulated amortization of $308,341 and $298,975, as of June 30, 2014 and December 31, 2013, respectively	269,821	281,220
Construction in progress	18,943	7,949
Real estate assets held for sale, less accumulated depreciation and amortization of $14,527, as of June 30, 2014	49,809	0
Total real estate assets	4,108,434	3,972,394
Cash and cash equivalents	49,334	99,855
Tenant receivables, net of allowance for doubtful accounts of $10 and $52 as of June 30, 2014 and December 31, 2013, respectively	7,154	7,414
Straight line rent receivable	117,991	113,592
Prepaid expenses and other assets	27,974	32,423
Deferred financing costs, less accumulated amortization of $13,444 and $11,938, as of June 30, 2014 and December 31, 2013, respectively	9,527	10,388
Intangible lease origination costs, less accumulated amortization of $221,615 and $216,598, as of June 30, 2014 and December 31, 2013, respectively	133,778	148,889
Deferred lease costs, less accumulated amortization of $33,096 and $27,375, as of June 30, 2014 and December 31, 2013, respectively	105,640	87,527
Investment in development authority bonds	120,000	120,000
Other assets held for sale, less accumulated amortization of $4,296, as of June 30, 2014	1,539	0
Total assets	4,681,371	4,592,482
Liabilities:	'	'
Line of credit and notes payable	1,386,644	1,240,249
Bonds payable, net of discount of $944 and $1,070, as of June 30, 2014 and December 31, 2013, respectively	249,056	248,930
Accounts payable, accrued expenses, and accrued capital expenditures	98,737	99,678
Deferred income	24,353	21,938
Intangible lease liabilities, less accumulated amortization of $78,945 and $76,500, as of June 30, 2014 and December 31, 2013, respectively	76,069	73,864
Obligations under capital leases	120,000	120,000
Liabilities held for sale, less accumulated amortization of $3,719, as of June 30, 2014	1,327	0
Total liabilities	1,956,186	1,804,659
Commitments and Contingencies (Note 6)	'	'
Equity:	'	'
Common stock, $0.01 par value, 900,000,000 shares authorized, 124,966,166 and 124,830,122 shares issued and outstanding as of June 30, 2014 and December 31, 2013, respectively	1,249	1,248
Additional paid-in capital	4,600,874	4,600,166
Cumulative distributions in excess of earnings	-1,873,842	-1,810,284
Other comprehensive loss	-3,096	-3,307
Total equity	2,725,185	2,787,823
Total liabilities and equity	$4,681,371	$4,592,482

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets Parentheticals (unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]	'	'
Buildings and improvements - accumulated depreciation	$641,687	$604,497
Intangible lease assets - accumulated amortization	308,341	298,975
Real estate assets held for sale, accumulated depreciation and amortization	14,527	0
Allowance for doubtful accounts	10	52
Deferred financing costs, accumulated amortization	13,444	11,938
Intangible lease origination costs, accumulated amortization	221,615	216,598
Deferred lease costs, accumulated amortization	33,096	27,375
Other assets held for sale, accumulated amortization	4,296	0
Bonds payable, discount	944	1,070
Intangible lease liabilities, accumulated amortization	78,945	76,500
Intangible lease liabilities - accumulated amortization	$3,719	$0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	900,000,000	900,000,000
Common stock, shares issued	124,966,166	124,830,122
Common stock, shares outstanding	124,966,166	124,830,122

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:	'	'	'	'
Rental income	$103,821	$103,103	$204,388	$204,409
Tenant reimbursements	22,934	21,266	46,667	43,510
Hotel income	6,505	6,562	10,566	11,516
Other property income	3,497	966	4,304	1,254
Revenues	136,757	131,897	265,925	260,689
Expenses:	'	'	'	'
Property operating costs	38,832	37,069	77,812	74,653
Hotel operating costs	4,689	4,820	8,830	9,081
Asset and property management fees:	'	'	'	'
Related-party	0	0	0	4,693
Other	675	530	964	1,143
Depreciation	30,169	26,955	57,473	53,665
Amortization	20,221	19,982	38,742	39,884
Impairment loss on real estate assets	1,432	0	14,982	0
General and administrative	8,412	8,957	15,358	45,776
Acquisition expenses	6,102	0	6,102	0
Costs and expenses	110,532	98,313	220,263	228,895
Real estate operating income	26,225	33,584	45,662	31,794
Other income (expense):	'	'	'	'
Interest expense	-18,860	-26,049	-36,770	-52,183
Interest and other income	1,802	9,113	3,612	18,224
Gain (loss) on interest rate swaps	-105	164	-335	221
Nonoperating income (expense)	-17,163	-16,772	-33,493	-33,738
Income (loss) before income tax expense	9,062	16,812	12,169	-1,944
Income tax expense	-351	-323	-7	-222
Income (loss) from continuing operations	8,711	16,489	12,162	-2,166
Discontinued operations:	'	'	'	'
Operating income (loss) from discontinued operations	-40	4,112	237	-9,855
Gain (loss) on disposition of discontinued operations	-650	0	-978	10,014
Income (loss) from discontinued operations	-690	4,112	-741	159
Net income (loss)	$8,021	$20,601	$11,421	($2,007)
Per-share information b basic:	'	'	'	'
Income (loss) from continuing operations - basic (dollars per share)	$0.07	$0.12	$0.10	($0.02)
Income (loss) from discontinued operations - basic (dollars per share)	($0.01)	$0.03	($0.01)	$0
Net income (loss) - basic (dollars per share)	$0.06	$0.15	$0.09	($0.01)
Weighted-average common shares outstanding b basic	124,860	135,816	124,855	136,166
Per-share information b diluted:	'	'	'	'
Income (loss) from continuing operations - diluted (dollars per share)	$0.07	$0.12	$0.10	($0.02)
Income (loss) from discontinued operations - diluted (dollars per share)	($0.01)	$0.03	($0.01)	$0
Net income (loss) - diluted (dollars per share)	$0.06	$0.15	$0.09	($0.01)
Weighted-average common shares outstanding b diluted	124,919	135,816	124,901	136,166
Dividends per share	$0.30	$0.38	$0.60	$0.76

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income (loss)	$8,021	$20,601	$11,421	($2,007)
Foreign currency translation adjustment realized in discontinued operations	0	0	0	-83
Market value adjustment to interest rate swap	-43	2,168	211	2,717
Comprehensive income	$7,978	$22,769	$11,632	$627

Consolidated_Statements_of_Equ

Consolidated Statements of Equity (unaudited) (USD $)		Total	Common Stock		Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings	Redeemable Common Stock	Other Comprehensive Income (Loss)
In Thousands, except Share data, unless otherwise specified		Total	Common Stock		Additional Paid-In Capital		Cumulative Distributions in Excess of Earnings	Redeemable Common Stock	Other Comprehensive Income (Loss)
Balance, value at beginning of period at Dec. 31, 2012		$3,163,980	$1,369	[1]	$4,901,889	[1]	($1,634,531)	($99,526)	($5,221)
Balance, shares at beginning of period at Dec. 31, 2012	[1]	'	136,901,000		'		'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]		'	'		'		'	'	'
Issuance of common stock, shares	[1]	'	1,657,000		'		'	'	'
Issuance of common stock		46,402	17	[1]	46,385	[1]	'	'	'
Redemptions of common stock, shares	[1]	'	-2,986,000		'		'	'	'
Redemptions of common stock		-77,033	-30	[1]	-77,003	[1]	'	'	'
Increase in redeemable common stock		-22,226	'		'		'	-22,226	'
Distributions to common stockholders		-103,030	'		'		-103,030	'	'
Offering costs		-127	'		-127	[1]	'	'	'
Net income (loss)		-2,007	'		'		-2,007	'	'
Foreign currency translation adjustment		-83	'		'		'	'	-83
Market value adjustment to interest rate swap		2,717	'		'		'	'	2,717
Balance, value at end of period at Jun. 30, 2013		3,008,593	1,356	[1]	4,871,144	[1]	-1,739,568	-121,752	-2,587
Balance, shares at end of period at Jun. 30, 2013	[1]	'	135,572,000		'		'	'	'
Balance, value at beginning of period at Dec. 31, 2013		2,787,823	1,248		4,600,166		-1,810,284	'	-3,307
Balance, shares at beginning of period at Dec. 31, 2013		124,830,122	124,830,000		'		'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]		'	'		'		'	'	'
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes), shares		'	136,000		'		'	'	'
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)		709	1		708		'	'	'
Increase in redeemable common stock		0	'		'		'	'	'
Distributions to common stockholders		-74,979	'		'		-74,979	'	'
Net income (loss)		11,421	'		'		11,421	'	'
Market value adjustment to interest rate swap		211	'		'		'	'	211
Balance, value at end of period at Jun. 30, 2014		$2,725,185	$1,249		$4,600,874		($1,873,842)	'	($3,096)
Balance, shares at end of period at Jun. 30, 2014		124,966,166	124,966,000		'		'	'	'

[1]	All share amounts and computations using such amounts have been retroactively adjusted to reflect the August 14, 2013 four-for-one reverse stock split (see Note 7, Equity).

Consolidated_Statements_of_Equ1

Consolidated Statements of Equity Parentheticals (unaudited) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Distributions to common stockholders per share	$0.60	$0.76
Common Stock	'	'
Distributions to common stockholders per share	$0.60	$0.76

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (unaudited) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:	'	'
Net income (loss)	$11,421	($2,007)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'
Straight-line rental income	-4,623	-13,121
Depreciation	57,473	61,235
Amortization	37,542	43,100
Impairment losses on real estate assets	14,982	16,867
Noncash interest expense	1,512	1,720
Gain on interest rate swaps	-2,324	-3,461
Loss (gain) on sale of real estate	978	-10,014
Stock-based compensation expense	1,023	0
Changes in assets and liabilities, net of acquisitions:	'	'
Decrease (increase) in tenant receivables, net	-455	5,872
Decrease (increase) in prepaid expenses and other assets	650	-3,989
Decrease in accounts payable and accrued expenses	-7,957	-4,422
Increase in due to affiliates	0	16,205
Increase (decrease) in deferred income	2,761	-5,664
Net cash provided by operating activities	112,983	102,321
Cash Flows from Investing Activities:	'	'
Net proceeds from the sale of real estate	27,131	65,928
Real estate acquisitions	-155,203	0
Capital improvements	-18,868	-22,495
Deferred lease costs paid	-14,487	-9,816
Net cash provided by (used in) investing activities	-161,427	33,617
Cash Flows from Financing Activities:	'	'
Financing costs paid	-798	-240
Proceeds from lines of credit and notes payable	130,000	120,000
Repayments of lines of credit and notes payable	-56,300	-112,227
Issuance of common stock	0	46,402
Redemptions of common stock	0	-78,609
Distributions paid to stockholders	-74,979	-56,628
Distributions paid to stockholders and reinvested in shares of our common stock	0	-46,402
Tender offer and offering costs paid	0	-121
Net cash used in financing activities	-2,077	-127,825
Net increase (decrease) in cash and cash equivalents	-50,521	8,113
Effect of foreign exchange rate on cash and cash equivalents	0	-103
Cash and cash equivalents, beginning of period	99,855	53,657
Cash and cash equivalents, end of period	$49,334	$61,667

Organization

Organization	6 Months Ended
Organization	Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization	'
	Organization
	Columbia Property Trust, Inc. ("Columbia Property Trust") (NYSE: CXP) is a Maryland corporation that operates as a real estate investment trust ("REIT") for federal income tax purposes and owns and operates commercial real estate properties. Columbia Property Trust was incorporated in 2003, commenced operations in 2004, and conducts business primarily through Columbia Property Trust Operating Partnership, L.P. ("Columbia Property Trust OP"), a Delaware limited partnership. Columbia Property Trust is the general partner and sole owner of Columbia Property Trust OP and possesses full legal control and authority over its operations. Columbia Property Trust OP acquires, develops, owns, leases, and operates real properties directly, through wholly owned subsidiaries, or through joint ventures. References to Columbia Property Trust, "we," "us," or "our" herein shall include Columbia Property Trust and all subsidiaries of Columbia Property Trust, direct and indirect, and consolidated joint ventures.
	Columbia Property Trust typically invests in high-quality, income-generating office properties. As of June 30, 2014, Columbia Property Trust owned 37 office properties and one hotel, which includes 58 operational buildings. These properties are comprised of approximately 16.8 million square feet of commercial space and are located in 12 states and the District of Columbia. As of June 30, 2014, 36 of the office properties were wholly owned and the remaining property was owned through a consolidated subsidiary; the office properties were approximately 93.5% leased.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Basis of Presentation
	The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles ("GAAP") for complete financial statements. In the opinion of management, the statements for these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation. For further information, refer to the financial statements and footnotes included in Columbia Property Trust's Annual Report on Form 10-K for the year ended December 31, 2013 (the "2013 Form 10-K").
	Fair Value Measurements
	Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:
	Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.
	Level 2 – Assets and liabilities valued based on observable market data for similar instruments.
	Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.
	Real Estate Assets
	Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:


	Buildings		40 years
	Building improvements		5-25 years
	Site improvements		15 years
	Tenant improvements		Shorter of economic life or lease term
	Intangible lease assets		Lease term
	Evaluating the Recoverability of Real Estate Assets
	Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, Columbia Property Trust assesses the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of Columbia Property Trust's assets may be carried at more than an amount that could be realized in a current disposition transaction.
	Projections of expected future operating cash flows require that Columbia Property Trust estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. The subjectivity of assumptions used in the future cash flow analysis, including discount rates, could result in an incorrect assessment of the property's fair value and could result in the misstatement of the carrying value of Columbia Property Trust's real estate assets and related intangible assets and net income (loss).
	In connection with furthering its portfolio repositioning efforts, in the first quarter of 2013, Columbia Property Trust initiated a process to market 18 properties for sale (the "18 Property Sale"). Pursuant to the accounting policy outlined above, Columbia Property Trust evaluated the recoverability of the carrying values of each of these properties and determined that the 120 Eagle Rock property in East Hanover, New Jersey, and the 333 & 777 Republic Drive property in Allen Park, Michigan, were no longer recoverable due to shortening the respective expected property holding periods in connection with these repositioning efforts. As a result, Columbia Property Trust reduced the carrying value of the 120 Eagle Rock property and the 333 & 777 Republic Drive property to reflect their respective fair values, estimated based on projected discounted future cash flows and recorded corresponding property impairment losses, of $11.7 million and $5.2 million, respectively, in the first quarter of 2013, which are included in operating income (loss) from discontinued operations in the accompanying statement of operations. In connection with finalizing the terms of the 18 Property Sale agreement in the fourth quarter of 2013, Columbia Property Trust reduced the aggregate carrying value of the assets included therein to fair value, as estimated based on the approximate net contract price (Level 2) of $500 million, by recognizing an additional impairment loss of $12.9 million in the third quarter of 2013.
	In the first quarter of 2014, Columbia Property Trust revised its investment strategy for the 180 Park Avenue, #103 Building in Florham Park, New Jersey, to sell the property to a user in the near term. As a result, management reduced its intended holding period for the building and reevaluated the property's carrying value as of March 31, 2014, pursuant to the accounting policy outlined above. Columbia Property Trust concluded that the 180 Park Avenue, #103 Building was not recoverable and reduced its carrying value to reflect its fair value, estimated based on recently quoted market prices (Level 2), by recording an impairment loss of approximately $13.6 million in the first quarter of 2014. The sale of the180 Park Avenue, #103 Building closed on June 4, 2014 for $10.2 million, exclusive of transaction costs.
	In the second quarter of 2014, Columbia Property Trust decided to pursue a near-term sale of the 200 South Orange Building (formerly known as the SunTrust Building) in Orlando, Florida in connection with exiting this market. As a result, management reduced its intended holding period for the building and reevaluated the property's carrying value in the second quarter of 2014. In connection with negotiating the terms of the sale, Columbia Property Trust reduced the carrying value of the 200 South Orange Building to reflect fair value, estimated based on an approximate net contract price of $18.4 million (Level 1), by recording an impairment loss of $1.4 million in the second quarter. The sale of the 200 South Orange Building closed on June 30, 2014 for $18.4 million, net of transaction costs.

	The fair value measurements used in the evaluation of the 120 Eagle Rock property and the 333 & 777 Republic Drive property are considered to be Level 3 valuations within the fair value hierarchy outlined above, as there are significant unobservable inputs. Examples of inputs that were utilized in the fair value calculations include estimated holding periods, discount rates, market capitalization rates, expected lease rental rates, and potential sales prices. The table below represents the detail of the adjustments recognized using Level 3 inputs.
	For the three and six months ended June 30, 2013 (in thousands):


	Property		Net Book Value				Impairment Loss Recognized				Fair Value
	120 Eagle Rock		$	23,808			$	(11,708	)		$	12,100

	333 & 777 Republic Drive		$	13,359			$	(5,159	)		$	8,200

	Assets Held for Sale
	Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

	•	Management, having the authority to approve the action, commits to a plan to sell the property.

	•	The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

	•	An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

	•	The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

	•	The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

	•	Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.
	At such time that a property is determined to be held for sale, its carrying amount is reduced to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized. As of June 30, 2014, the 7031 Columbia Gateway Drive Building met the criteria to be classified as held for sale in the accompanying balance sheet. See Note 3, Real Estate and Other Transactions, for discussion of this disposition.
	Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessor
	Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail). As of June 30, 2014 and December 31, 2013, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):


			Intangible Lease Assets								Intangible				Intangible
											Lease				Below-Market
											Origination				In-Place Lease
			Above-Market				Absorption				Costs				Liabilities
			In-Place				Period Costs
			Lease Assets
	June 30, 2014	Gross	$	79,982			$	395,819			$	360,660			$	159,629

		Accumulated Amortization	(59,032		)		(241,922		)		(225,859		)		(82,664		)
		Net	$	20,950			$	153,897			$	134,801			$	76,965

December 31, 2013	Gross	$	80,836			$	388,686			$	365,487			$	150,364

	Accumulated Amortization	(56,859		)		(229,065		)		(216,598		)		(76,500		)
	Net	$	23,977			$	159,621			$	148,889			$	73,864

Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):


	Intangible Lease Assets								Intangible				Intangible
									Lease				Below-Market
									Origination				In-Place Lease
	Above-Market				Absorption				Costs				Liabilities
	In-Place				Period Costs
	Lease Assets
For the three months ended June 30, 2014	$	1,350			$	9,178			$	8,440			$	3,778

For the three months ended June 30, 2013	$	1,453			$	9,919			$	10,017			$	3,705

For the six months ended June 30, 2014	$	2,706			$	17,251			$	16,873			$	6,859

For the six months ended June 30, 2013	$	3,138			$	20,054			$	19,941			$	7,431

The remaining net intangible assets and liabilities as of June 30, 2014, will be amortized as follows (in thousands):


	Intangible Lease Assets								Intangible				Intangible
									Lease				Below-Market
									Origination				In-Place Lease
	Above-Market				Absorption				Costs				Liabilities
	In-Place				Period Costs
	Lease Assets
For the six months ended December 31, 2014	$	2,665			$	18,353			$	16,645			$	7,870

For the years ending December 31:
2015	4,492				31,302				29,937				13,302

2016	3,760				23,430				22,897				10,091

2017	1,891				17,208				16,342				7,684

2018	1,087				13,297				11,834				6,730

2019	1,047				12,261				10,681				6,074

Thereafter	6,008				38,046				26,465				25,214

	$	20,950			$	153,897			$	134,801			$	76,965

Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessee
In-place ground leases where Columbia Property Trust is the lessee may have value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption, measured over a period equal to the remaining terms of the leases. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases. Columbia Property Trust had gross below-market lease assets of approximately $110.7 million as of June 30, 2014 and December 31, 2013, and recognized amortization of these assets of approximately $0.5 million for the three months ended June 30, 2014 and 2013, and $1.0 million for the six months ended June 30, 2014 and 2013.
As of June 30, 2014, the remaining net below-market lease asset will be amortized as follows (in thousands):


For the six months ended December 31, 2014	$	1,036

For the years ending December 31:
2015	2,069

2016	2,069

2017	2,069

2018	2,069

2019	2,069

Thereafter	85,207

	$	96,588

Prepaid Expenses and Other Assets
Prepaid expenses and other assets primarily are comprised of escrow accounts held by lenders to pay future real estate taxes, insurance and tenant improvements, notes receivable, nontenant receivables, prepaid taxes, insurance and operating costs, certain corporate assets, hotel inventory, and deferred tax assets. Prepaid expenses and other assets will be expensed as incurred or reclassified to other asset accounts upon being put into service in future periods.
Interest Rate Swap Agreements
Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate swap transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a hedge, if any, is recognized currently in earnings. Changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment.
The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):


				Estimated Fair Value as of
Instrument Type		Balance Sheet Classification		June 30,				December 31,
				2014				2013
Derivatives designated as hedging instruments:
Interest rate contracts		Accounts payable		$	(3,096	)		$	(3,307	)
Derivatives not designated as hedging instruments:
Interest rate contracts		Accounts payable		$	(5,255	)		$	(7,579	)

Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable. The fair value of Columbia Property Trust's interest rate swaps were $(8.4) million and $(10.9) million at June 30, 2014 and December 31, 2013, respectively.


	Six months ended
	June 30,
	2014				2013
Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income	$	211			$	2,717

Gain (loss) on interest rate swap recognized through earnings	$	(335	)		$	221

During the periods presented, there was no hedge ineffectiveness required to be recognized into earnings on the interest rate swaps that qualified for hedge accounting treatment.
Income Taxes
Columbia Property Trust has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the "Code"), and has operated as such beginning with its taxable year ended December 31, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.
Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), Columbia KCP TRS, LLC ("Columbia KCP TRS"), and Columbia Energy TRS, LLC ("Columbia Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.
Reclassification
Certain prior period amounts have been reclassified to provide additional detail, or to conform with the current-period financial statement presentation, including 2013 discontinued operations (see Note 10, Held for Sale and Discontinued Operations) and historical share and per-share data impacted by the Reverse Stock Split (see Note 7, Equity).
Recent Accounting Pronouncements
In April 2014, FASB issued ASU 2014-08, which raises the threshold used to determine whether revenues and expenses associated with dispositions are reclassified to discontinued operations in the statement of operations. Under the new standard, typical assets sales will remain in continuing operations; whereas, assets sales that represents a strategic shift in operations (for example, exiting a major geographical area) would be reclassified to discontinued operations. ASU 2014-08 is required beginning with the first quarter of 2015; however, Columbia Property Trust elected to adopt the new standard effective April 1, 2014.

Real_Estate_and_Other_Transact

Real Estate and Other Transactions	6 Months Ended
Real Estate and Other Transactions	Jun. 30, 2014
Real Estate [Abstract]	'
Real Estate and Other Transactions	'
	Real Estate and Other Transactions
	Acquisitions
	During the six months ended June 30, 2014, Columbia Property Trust acquired the following property (in thousands):


	Property Name		City		State		Date		Land			Buildings				Intangible Lease Assets		Intangible Lease Origination Costs		Intangible Below-			Total		Lease
							Acquired					and								Market			Purchase		Details
												Improvements								Lease			Price
																				Liability
	221 Main Street Building		San Francisco		CA		22-Apr-14		$	60,509		$	161,853			$	12,776	$	3,475	$	(10,323	)	$	228,290	(1)
	221 Main Street Building		San Francisco		CA		22-Apr-14		$	60,509		$	161,853			$	12,776	$	3,475	$	(10,323	)	$	228,290	(1)

	(1)	As of the acquisition date, the 221 Main Street Building was 82.8% leased to 40 tenants, including DocuSign, Inc. (15.7%). No other tenants lease more than 10% of the building, based on annualized lease revenue.
	The purchase price for the acquisition includes allocations based upon preliminary estimates of the fair value of the assets and liabilities acquired. These allocations may be adjusted in the future upon finalization of these preliminary estimates. Note 2, Summary of Significant Accounting Policies, provides a discussion of the estimated useful life for each asset class.
	On April 22, 2014, Columbia Property Trust acquired the 221 Main Street Building, a 388,000 square foot office building in San Francisco, California, for $228.8 million, exclusive of closing costs. The acquisition was funded with a $73.0 million assumed mortgage note, $116.0 million of borrowings on the JPMorgan Credit Facility and cash on hand. Columbia Property Trust recognized revenues of $3.4 million and a net loss of $7.5 million from the 221 Main Street Building acquisition for the period from April 22, 2014 to June 30, 2014. The net loss includes acquisition-related expenses of $6.1 million.
	The following unaudited pro forma statements of operations presented for the three and six months ended June 30, 2014, have been prepared for Columbia Property Trust to give effect to the acquisition of the 221 Main Building as if the acquisition occurred on January 1, 2013. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisition of the 221 Main Street Building been consummated as of January 1, 2013 (in thousands).


		Three months ended								Six months ended
		June 30,								June 30,
		2014				2013				2014			2013
	Revenues	$	137,482			$	134,708			$	269,863		$	266,414
	Revenues	$	137,482			$	134,708			$	269,863		$	266,414
	Net income (loss)	$	14,241			$	20,113			$	18,014		$	(8,904	)
	Net income (loss)	$	14,241			$	20,113			$	18,014		$	(8,904	)
	Net income (loss) per share - basic	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Net income (loss) per share - basic	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Net income (loss) per share - diluted	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Net income (loss) per share - diluted	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Dispositions
	As a result of adopting ASU 2014-08 effective April 1, 2014 (see Note 2, Significant Accounting Policies), for all periods presented in the statements of operations, the revenues and expenses associated with the June and July 2014 property sales described below are included in continuing operations, while the revenues and expenses associated with sales executed before April 1, 2014, are classified as discontinued operations.
	180 Park Avenue, #103 Building
	On June 4, 2014, Columbia Property Trust closed on the sale of the 180 Park Avenue, #103 Building in Florham Park, New Jersey, for $10.2 million, exclusive of transaction costs. Columbia Property Trust recognized an impairment loss of $13.6 million related to this building in the first quarter of 2014, as further described in Note 2, Significant Accounting Policies.
	200 South Orange Building
	On June 30, 2014, Columbia Property Trust closed on the sale of the 200 South Orange Building in Orlando, Florida, for $18.4 million, net of transaction costs. This transaction resulted in a $1.4 million impairment loss (see Note 2, Summary of Significant Accounting Policies, for additional details).
	7031 Columbia Gateway Drive Building
	On July 1, 2014, Columbia Property Trust closed on the sale of the 7031 Columbia Gateway Drive Building in Columbia, Maryland, for approximately $59.5 million, exclusive of transaction costs. This transaction yielded a gain of approximately $7.8 million, which will be reflected in the third quarter and may be adjusted in future periods as additional information regarding estimated transaction costs becomes available. As of June 30, 2014, the assets and liabilities of the 7031 Columbia Gateway Drive Building are classified as held for sale in the accompanying balance sheet.
	Dvintsev Business Center - Tower B Building
	On March 21, 2013, Columbia Property Trust closed on the sale of the Dvintsev Business Center - Tower B Building in Moscow, Russia, and its holding entity, Landlink Ltd., which was 100% owned by Columbia Property Trust, for $67.5 million, exclusive of transaction costs, resulting in a gain on disposition of discontinued operations in the accompanying consolidated statement of operations of $10.0 million.
	Other Transactions
	As described in Note 9, Related-Party Transactions and Agreements, Columbia Property Trust acquired Columbia Property Trust Advisory Services, LLC ("Columbia Property Trust Advisory Services") and Columbia Property Trust Services, LLC ("Columbia Property Trust Services") on February 28, 2013. The following unaudited pro forma statements of operations presented for the six months ended June 30, 2013, have been prepared for Columbia Property Trust to give effect to the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services as if the acquisitions occurred on January 1, 2013. The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services been consummated as of January 1, 2013 (in thousands).


		Three months ended				Six months ended
		June 30,				June 30,
		2014		2013		2014		2013
	Revenues	*		*		*		$	261,848
	Revenues	*		*		*		$	261,848
	Net income	*		*		*		$	31,770
	Net income	*		*		*		$	31,770

	*	Columbia Property Trust owned Columbia Property Trust Advisory Services and Columbia Property Trust Services for all of the three months ended June 30, 2014 and 2013, and the six months ended June 30, 2014.

Line_of_Credit_and_Notes_Payab

Line of Credit and Notes Payable	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Line of Credit and Notes Payable	'
	Line of Credit and Notes Payable
	As of June 30, 2014 and December 31, 2013, Columbia Property Trust had the following line of credit and notes payable indebtedness (excluding bonds payable; see Note 5, Bonds Payable) in thousands:


	Facility	June 30,		December 31,
		2014		2013
	$450 Million Term Loan	$	450,000	$	450,000

	Market Square Buildings mortgage note	325,000		325,000

	333 Market Street Building mortgage note	207,187		207,559

	100 East Pratt Street Building mortgage note	105,000		105,000

	JPMorgan Chase Credit Facility	75,000		—

	221 Main Street Building mortgage note	73,000		—

	263 Shuman Boulevard Building mortgage note	49,000		49,000

	SanTan Corporate Center mortgage notes	39,000		39,000

	One Glenlake Building mortgage note	33,413		34,713

	215 Diehl Road Building mortgage note	21,000		21,000

	544 Lakeview Building mortgage note	9,044		8,977

	Total indebtedness	$	1,386,644	$	1,240,249

	221 Main Street Building Mortgage Note
	In April 2014, in connection with acquiring the 221 Main Street Building in San Francisco, California, Columbia Property Trust assumed a $73.0 million mortgage note payable (the "221 Main Street Building Mortgage Note"), which is secured by this property. At the time of acquisition, Columbia Property Trust evaluated the 221 Main Street Building Mortgage Note and determined that the face value of the note approximates its fair value. The fair value of the 221 Main Street Building mortgage note was estimated by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates (Level 2). The 221 Main Street Building Mortgage Note is due on May 10, 2017, and requires monthly interest-only payments at an interest rate of 3.95% per annum.
	Fair Value of Debt
	The estimated fair value of Columbia Property Trust's line of credit and notes payable as of June 30, 2014 and December 31, 2013, was approximately $1,406.5 million and $1,245.3 million, respectively. Columbia Property Trust estimated the fair value of its JPMorgan Chase Credit Facility (the "JPMorgan Chase Credit Facility") by obtaining estimates for similar facilities from multiple market participants as of the respective reporting dates. Therefore, the fair values determined are considered to be based on observable market data for similar instruments (Level 2). The fair values of all other debt instruments were estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing arrangements as of the respective reporting dates. The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.
	Interest Paid and Debt Covenants
	During the six months ended June 30, 2014 and 2013, Columbia Property Trust made interest payments of approximately $27.2 million and $30.4 million, respectively. There was no interest capitalized in either period. As of June 30, 2014, Columbia Property Trust believes it was in compliance with the restrictive covenants on its $450 Million Term Loan (the "$450 Million Term Loan"), JPMorgan Chase Credit Facility, and notes payable obligations.

Bonds_Payable

Bonds Payable	6 Months Ended
Bonds Payable	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Bonds Payable	'
	Bonds Payable
	In 2011, Columbia Property Trust OP issued $250.0 million of seven-year, unsecured 5.875% senior notes at 99.295% of their face value (the "2018 Bonds Payable"), which are guaranteed by Columbia Property Trust. Columbia Property Trust OP received proceeds from the 2018 Bonds Payable, net of fees, of $246.7 million. The 2018 Bonds Payable require semi-annual interest payments in April and October based on a contractual annual interest rate of 5.875%, which is subject to adjustment in certain circumstances. In the accompanying consolidated balance sheets, the 2018 Bonds Payable are shown net of the initial issuance discount of approximately $1.8 million, which is amortized to interest expense over the term of the 2018 Bonds Payable using the effective interest method. The principal amount of the 2018 Bonds Payable is due and payable on the maturity date, April 1, 2018. Interest payments of $7.3 million were made on the 2018 Bonds Payable during the six months ended June 30, 2014 and 2013. As of June 30, 2014, Columbia Property Trust believes it was in compliance with the restrictive covenants on the 2018 Bonds Payable.
	The estimated fair value of the 2018 Bonds Payable as of June 30, 2014, and December 31, 2013, was approximately $250.8 million. The fair value of the 2018 Bonds Payable was estimated based on discounted cash flow analyses using the current incremental borrowing rates for similar types of borrowing as the 2018 Bonds Payable arrangements as of the respective reporting dates (Level 2). The discounted cash flow method of assessing fair value results in a general approximation of value, and such value may never actually be realized.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Commitments Under Existing Lease Agreements
	Certain lease agreements include provisions that, at the option of the tenant, may obligate Columbia Property Trust to expend capital to expand an existing property or provide other expenditures for the benefit of the tenant. As of June 30, 2014, no such options have been exercised that have not been materially satisfied.
	Litigation
	Columbia Property Trust is subject to various legal proceedings, claims, and administrative proceedings arising in the ordinary course of business, some of which are expected to be covered by liability insurance. Management makes assumptions and estimates concerning the likelihood and amount of any reasonably possible loss relating to these matters using the latest information available. Columbia Property Trust records a liability for litigation if an unfavorable outcome is probable and the amount of loss or range of loss can be reasonably estimated. If an unfavorable outcome is probable and a reasonable estimate of the loss is a range, Columbia Property Trust accrues the best estimate within the range. If no amount within the range is a better estimate than any other amount, Columbia Property Trust accrues the minimum amount within the range. If an unfavorable outcome is probable but the amount of the loss cannot be reasonably estimated, Columbia Property Trust discloses the nature of the litigation and indicates that an estimate of the loss or range of loss cannot be made. If an unfavorable outcome is reasonably possible and the estimated loss is material, Columbia Property Trust discloses the nature and estimate of the possible loss of the litigation. Columbia Property Trust does not disclose information with respect to litigation where the possibility of an unfavorable outcome is considered to be remote. Based on current expectations, such matters, both individually and in the aggregate, are not expected to have a material adverse effect on the liquidity, results of operations, business, or financial condition of Columbia Property Trust. Columbia Property Trust is not currently involved in any legal proceedings of which management would consider the outcome to be reasonably likely to have a material adverse effect on the results of operations, liquidity, or financial condition of Columbia Property Trust.

Stockholders_Equity

Stockholder's Equity	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Stockholders' Equity	'
	Stockholders' Equity
	2013 Long-Term Incentive Plan
	Columbia Property Trust maintains a long-term incentive plan that provides for grants of stock to be made to certain employees and independent directors of Columbia Property Trust (the "2013 Long-Term Incentive Plan"). The 2013 Long-Term Incentive Plan was approved by Columbia Property Trust's shareholders in July 2013. A total of 2,000,000 shares are authorized and reserved for issuance under the 2013 Long-Term Incentive Plan.
	On January 21, 2014, Columbia Property Trust granted 143,740 shares of common stock to employees, net of 12,752 shares withheld to settle the related tax liability, under the 2013 Long-Term Incentive Plan (the "2013 LTIP Employee Grant"), of which 25% vested upon grant, and the remaining shares will vest ratably, with the passage of time, on January 31, 2015, 2016, and 2017. Employees will receive quarterly dividends related to their entire grant, including the unvested shares, on each dividend payment date. A summary of the activity for the employee stock grants under the 2013 Long-Term Incentive Plan for the six months ended June 30, 2014, follows:


			Shares			Weighted-Average,
			(in thousands)			Grant-Date Fair Value(1)
	Unvested shares as of January 1, 2014		—			$	—

	Granted		144			$	24.82

	Vested		(36	)		$	24.82

	Forfeited		(1	)		$	24.82

	Unvested shares as of June 30, 2014		107		(2)	$	24.82


	(1)	Columbia Property Trust determined the weighted-average, grant-date fair value using the market closing price on the date of the grant.

	(2)	As of June 30, 2014, we expect approximately 101,000 of the 107,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the 2013 Long-Term Incentive Plan.
	In January, April, and July 2014, Columbia Property Trust paid quarterly installments of the independent directors' annual equity retainers by granting shares to the independent directors, which vested at the time of grant. A summary of these grants, which were made under the 2013 Long-Term Incentive Plan follows:


			Date of Grant		Shares			Weighted Average
								Grant-Date Fair Value
	Q1 2014 Director Grant		January 21, 2014		3,344			$	24.82

	Q2 2014 Director Grant		April 1, 2014		2,968			$	27.22

	Q3 2014 Director Grant		July 1, 2014		3,016			$	25.78

	For the three and six months ended June 30, 2014, Columbia Property Trust incurred $0.5 million and $1.0 million, respectively, in stock-based compensation expense, of which $0.1 million and $0.2 million, respectively, related to the issuance of shares to independent directors as described above, $0.2 million and $0.4 million, respectively, related to the amortization of unvested awards under the 2013 LTIP Employee Grant, and $0.2 million and $0.4 million, respectively, related to future employee awards to be granted for service during this period. These future awards have been authorized and employee service related to these awards began on January 1, 2014. Columbia Property Trust anticipates granting these awards in January 2015, with 25% of the grant vesting on the grant date and the remaining shares vesting ratably on January 31, 2016, 2017, and 2018 (the "2014 LTIP Employee Grant"). These expenses are included in general and administrative expenses in the accompanying consolidated statement of operations. As of June 30, 2014, there was $2.1 million of unrecognized compensation costs related to unvested awards under the 2013 LTIP Employee Grant. This amount will be amortized over the respective vesting period, ranging from one to three years at the time of grant.
	Reverse Stock Split
	On August 6, 2013, Columbia Property Trust's board of directors approved a four-for-one reverse stock split (the "Reverse Stock Split"). The Reverse Stock Split became effective on August 14, 2013 (the "Effective Date"), causing every four shares of common stock that were issued and outstanding as of the Effective Date to be automatically combined into one issued and outstanding share of common stock. The share combination affected all shareholders uniformly and did not affect any shareholder's percentage ownership interest or any shareholder rights. In addition, the par value and number of authorized shares of common stock remained unchanged. The Reverse Stock Split requires retroactive adjustment; therefore, all share and per-share data for prior periods has been adjusted to reflect the Reverse Stock Split.
	On July 1, 2014, Columbia Property Trust reduced the number of common shares authorized from 900,000,000 to 225,000,000, which is proportionally equal to the reduction in shares outstanding as a result of the Reverse Stock Split.

Supplemental_Disclosures_of_No

Supplemental Disclosures of Noncash Investing and Financing Activities	6 Months Ended
	Jun. 30, 2014
Supplemental Cash Flow Information [Abstract]	'
Supplemental Disclosures of Noncash Investing and Financing Activities	'
	Supplemental Disclosures of Noncash Investing and Financing Activities
	Outlined below are significant noncash investing and financing activities for the six months ended June 30, 2014 and 2013 (in thousands):


		Six months ended
		June 30,
		2014		2013
	Investment in real estate funded with other assets	$	3,807	$	—

	Other assets assumed at acquisition	$	501	$	741

	Other liabilities assumed at acquisition	$	589	$	741

	Other liabilities settled at disposition	$	—	$	872

	Note payable assumed at acquisition	$	73,000	$	—

	Interest accruing to notes payable	$	—	$	159

	Amortization of premiums (discounts) on debt	$	178	$	304

	Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	$	211	$	2,717

	Accrued capital expenditures and deferred lease costs	$	18,431	$	13,408

	Accrued deferred financing costs	$	31	$	—

	Accrued redemptions of common stock	$	—	$	2,079

	Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	$	708	$	—

	Increase in redeemable common stock	$	—	$	22,226

RelatedParty_Transactions_and_

Related-Party Transactions and Agreements	6 Months Ended
	Jun. 30, 2014
Related Party Transactions [Abstract]	'
Related-Party Transactions and Agreements	'
	Related-Party Transactions and Agreements
	During 2013, Columbia Property Trust was party to agreements with various entities of Wells Real Estate Funds ("WREF"), which served as our Advisor (the "Advisor"). Since January 1, 2014, Columbia Property Trust has had no contractual relationship with WREF.

	•	Transition Services Agreement - Columbia Property Trust exercised the option to acquire Columbia Property Trust Advisory Services and Columbia Property Trust Services from WREF (the "Assignment Options") on February 13, 2014, as provided for in the Transition Services Agreement, as amended (the "Transition Services Agreement"). No payment was associated with the Assignment Options; however, Columbia Property Trust was required to pay WREF a total of $8.8 million, for the work required to transfer sufficient employees, proprietary systems and processes, and assets to Columbia Property Trust Advisory Services and Columbia Property Trust Services.

	•	Consulting Services Agreement - Under the Consulting Services Agreement, WREF provided consulting services with respect to the same matters that were provided under the Advisory Agreement, described below (the "Consulting Services Agreement"). The Consulting Services Agreement terminated on December 31, 2013. The fees incurred under the Consulting Services Agreement are included in general and administrative expense in the accompanying consolidated statement of operations.

	•	Advisory Agreement - Under the terms of the advisory agreement in place from January 1, 2013 to February 27, 2013 (the "Advisory Agreement"), Columbia Property Trust incurred fees and reimbursements payable to the Advisor for asset management and administrative services.
	Related-Party Costs
	Pursuant to the terms of the agreements described above, Columbia Property Trust incurred the following related-party costs for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):


		Three months ended				Six months ended
		June 30,				June 30,
		2014		2013		2014		2013
	Investor services	$	—	$	278	$	—	$	369

	Administrative reimbursements, net(1)	—		70		—		1,891

	Other	—		20		—		69

	Consulting fees(2)	—		—		—		25,417

	Transition services(3)	—		—		—		5,750

	Asset management fees	—		—		—		5,083

	Property management fees	—		—		—		523

	Construction fees(4)	—		—		—		139

	Total	$	—	$	368	$	—	$	39,241


	-1	Administrative reimbursements are presented net of reimbursements from tenants of approximately $0.7 million for the six months ended June 30, 2013.

	(2)	$10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended June 30, 2013. The remaining $15.2 million was paid ratably over the remainder of 2013.

	(3)	$3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended June 30, 2013; $1.5 million was paid in the third quarter of 2013; and the remaining $1.3 million was paid in the fourth quarter of 2013.

	(4)	Construction fees are capitalized to real estate assets as incurred.

Held_for_Sale_and_Discontinued

Held for Sale and Discontinued Operations	6 Months Ended
	Jun. 30, 2014
Discontinued Operation, Additional Disclosures [Abstract]	'
Held for Sale and Discontinued Operations	'
	Held for Sale and Discontinued Operations
	Held for Sale
	In accordance with GAAP, assets and liabilities that meet certain criteria for disposal are required to be classified as held for sale. As of June 30, 2014, the 7031 Columbia Gateway Drive Building was subject to a firm sale contract and, thus, classified as held for sale in the accompanying consolidated balance sheet. This transaction closed on July 1, 2014, and will be reflected in the third quarter of 2014 (see Note 3, Real Estate and Other Transactions).
	The major classes of assets and liabilities classified as held for sale as of June 30, 2014, is provided below (in thousands):


		30-Jun-14
	Real estate assets held for sale:
	Real estate assets, at cost:
	Land	$	10,232

	Buildings and improvements, less accumulated depreciation of $7,829	37,963

	Intangible lease assets, less accumulated amortization of $6,698	1,614

	Total real estate assets held for sale, net	$	49,809


	Other assets held for sale:
	Tenant receivables	$	403

	Prepaid expenses and other assets	26

	Intangible lease origination costs, less accumulated amortization of $4,244	1,023

	Deferred lease costs, less accumulated amortization of $52	87

	Total other assets held for sale, net	$	1,539


	Liabilities held for sale:
	Accounts payable, accrued expenses, and accrued capital expenditures	$	85

	Deferred income	346

	Intangible lease liabilities, less accumulated amortization of $3,719	896

	Total liabilities held for sale, net	$	1,327

	Discontinued Operations
	As a result of implementing ASU 2014-08 effective April 1, 2014 (see Note 2., Significant Accounting Policies), beginning in the second quarter of 2014, the operating results for properties sold will generally be included in continuing operations. The following properties were sold prior to implementing ASU 2014-08 and are, therefore, included in discontinued operations in the accompanying consolidated statements of operations for all periods presented:

	•	the properties included in the 18 Property Sale, which closed on November 5, 2013 for $521.5 million and resulted in a net gain of $0.2 million; and

	•	Dvintsev Business Center - Tower B, which sold on March 21, 2013 for $67.5 million and resulted in a gain of $10.0 million.
	The following table shows the revenues and expenses of the above-described discontinued operations (in thousands):


		Three months ended						Six months ended
		June 30,						June 30,
		2014			2013			2014				2013
	Revenues:
	Rental income	$	1		$	13,848		$	4			$	28,970

	Tenant reimbursements	151			3,192			100				6,557

	Other property income	—			292			—				292

		152			17,332			104				35,819

	Expenses:
	Property operating costs	82			6,068			(265		)		12,373

Asset and property management fees	—			150			7				1,308

Depreciation	—			3,653			—				7,570

Amortization	—			2,345			—				4,390

Impairment loss on real estate assets	—			—			—				16,867

General and administrative	110			37			128				1,072

Total expenses	192			12,253			(130		)		43,580

Operating income (loss)	(40		)	5,079			234				(7,761		)

Other income (expense):
Interest expense	—			(1,126		)	—				(2,252		)

Interest and other income	—			161			3				164

	—			(965		)	3				(2,088		)

Income (loss) from discontinued operations before income tax expense	(40		)	4,114			237				(9,849		)

Income tax expense	—			(2		)	—				(6		)

Income (loss) from discontinued operations	(40		)	4,112			237				(9,855		)

Gain (loss) on disposition of discontinued operations	(650		)	—			(978		)		10,014

Income (loss) from discontinued operations	$	(690	)	$	4,112		$	(741	)		$	159

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	For the three and six months ended June 30, 2014, the basic and diluted earnings per-share computations, net income (loss), and income (loss) from continuing operations have been reduced for the dividends paid on unvested shares related to the 2013 LTIP Employee Grant and the 2014 LTIP Employee Grant. The following table reconciles the numerator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):


		Three months ended June 30,							Six months ended June 30,
		2014				2013			2014			2013
	Net income (loss)	$	8,021			$	20,601		$	11,421		$	(2,007	)

	Distributions paid on unvested shares	(32		)		—			(64		)	—

	Net income (loss) used to calculate basic and diluted earnings per share	$	7,989			$	20,601		$	11,357		$	(2,007	)

	The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):


		Three months ended						Six months ended
		June 30,						June 30,
		2014			2013			2014		2013
	Weighted-average common shares - basic	124,860			135,816			124,855		136,166

	Plus incremental weighted-average shares from time-vested conversions less assumed share repurchases:
	2013 LTIP Employee Grant	27			—			25		—

	2014 LTIP Employee Grant	32			—			21		—

	Weighted-average common shares - diluted	124,919			135,816			124,901		136,166

Financial_Information_for_Pare

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries	6 Months Ended
	Jun. 30, 2014
Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non Guarantor Subsidiaries [Abstract]	'
Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries	'
	Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries
	The 2018 Bonds Payable (see Note 5, Bonds Payable) were issued by Columbia Property Trust OP, and are guaranteed by Columbia Property Trust. As a result of amending the $450 Million Term Loan and the JPMorgan Chase Credit Facility in August 2013, all of the indirect and direct subsidiaries of Columbia Property Trust that previously guaranteed the $450.0 Million Term Loan, the JPMorgan Chase Credit Facility, and the 2018 Bonds Payable were released under customary circumstances as guarantors, which resulted in the reclassification of prior-period amounts from the guarantor to the non-guarantor groupings within the condensed consolidating financial statements to conform with the current period presentation. In accordance with SEC Rule 3-10(c), Columbia Property Trust includes herein condensed consolidating financial information in lieu of separate financial statements of the subsidiary issuer (Columbia Property Trust OP), as defined in the bond indenture, because all of the following criteria are met:

	-1	The subsidiary issuer (Columbia Property Trust OP) is 100% owned by the parent company guarantor (Columbia Property Trust);

	-2	The guarantees are full and unconditional; and

	-3	The guarantees are joint and several.
	Columbia Property Trust uses the equity method with respect to its investment in subsidiaries included in its condensed consolidating financial statements. Set forth below are Columbia Property Trust's condensed consolidating balance sheets as of June 30, 2014 and December 31, 2013 (in thousands), as well as its condensed consolidating statements of operations and its condensed consolidating statements of comprehensive income for the three and six months ended June 30, 2014 and 2013 (in thousands); and its condensed consolidating statements of cash flows for the six months ended June 30, 2014 and 2013 (in thousands).
	Condensed Consolidating Balance Sheets (in thousands)


		As of June 30, 2014
		Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
		(Parent)			Property			Guarantors			adjustments				(Consolidated)
		(Guarantor)			Trust OP
					(the Issuer)
	Assets:
	Real estate assets, at cost:
	Land	$	—		$	6,241		$	742,827		$	—			$	749,068

	Buildings and improvements, net	—			23,903			2,996,890			—				3,020,793

	Intangible lease assets, net	—			—			269,821			—				269,821

	Construction in progress	—			2,074			16,869			—				18,943

	Real estate assets held for sale, net	—			—			49,809			—				49,809

	Total real estate assets	—			32,218			4,076,216			—				4,108,434

	Cash and cash equivalents	24,320			5,122			19,892			—				49,334

	Investment in subsidiaries	2,523,593			2,263,021			—			(4,786,614		)		—

	Tenant receivables, net of allowance	—			220			6,934			—				7,154

	Straight line rent receivable	—			31			117,960			—				117,991

	Prepaid expenses and other assets	177,272			148,845			23,030			(321,173		)		27,974

	Deferred financing costs, net	—			7,505			2,022			—				9,527

	Intangible lease origination costs, net	—			—			133,778			—				133,778

	Deferred lease costs, net	—			1,835			103,805			—				105,640

	Investment in development authority bonds	—			—			120,000			—				120,000

	Other assets held for sale, net	—			—			1,539			—				1,539

	Total assets	$	2,725,185		$	2,458,797		$	4,605,176		$	(5,107,787	)		$	4,681,371

	Liabilities:
	Line of credit and notes payable	$	—		$	525,000		$	1,181,232		$	(319,588	)		$	1,386,644

	Bonds payable, net	—			249,056			—			—				249,056

	Accounts payable, accrued expenses, and accrued capital expenditures	—			11,155			87,582			—				98,737

	Due to affiliates	—			18			1,567			(1,585		)		—

	Deferred income	—			184			24,169			—				24,353

Intangible lease liabilities, net	—			—			76,069			—				76,069

Obligations under capital leases	—			—			120,000			—				120,000

Liabilities held for sale, net	—			—			1,327			—				1,327

Total liabilities	—			785,413			1,491,946			(321,173		)		1,956,186

Equity:
Total equity	2,725,185			1,673,384			3,113,230			(4,786,614		)		2,725,185

Total liabilities and equity	$	2,725,185		$	2,458,797		$	4,605,176		$	(5,107,787	)		$	4,681,371




Condensed Consolidating Balance Sheets (in thousands)


	As of December 31, 2013
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Assets:
Real estate assets, at cost:
Land	$	—		$	6,241		$	700,697		$	—			$	706,938

Building and improvements, net	—			24,185			2,952,102			—				2,976,287

Intangible lease assets, net	—			—			281,220			—				281,220

Construction in progress	—			28			7,921			—				7,949

Total real estate assets	—			30,454			3,941,940			—				3,972,394

Cash and cash equivalents	53,322			20,708			25,825			—				99,855

Investment in subsidiaries	2,557,347			2,286,982			—			(4,844,329		)		—

Tenant receivables, net of allowance	—			—			7,414			—				7,414

Straight line rent receivable	—			22			113,570			—				113,592

Prepaid expenses and other assets	177,185			150,806			26,602			(322,170		)		32,423

Deferred financing costs, net	—			8,762			1,626			—				10,388

Intangible lease origination costs, net	—			—			148,889			—				148,889

Deferred lease costs, net	—			1,495			86,032			—				87,527

Investment in development authority bonds	—			—			120,000			—				120,000

Total assets	$	2,787,854		$	2,499,229		$	4,471,898		$	(5,166,499	)		$	4,592,482

Liabilities:
Lines of credit and notes payable	$	—		$	450,000		$	1,110,838		$	(320,589	)		$	1,240,249

Bonds payable, net	—			248,930			—			—				248,930

Accounts payable, accrued expenses, and accrued capital expenditures	31			11,816			87,831			—				99,678

Due to (from) affiliates	—			(925		)	2,506			(1,581		)		—

Deferred income	—			146			21,792			—				21,938

Intangible lease liabilities, net	—			—			73,864			—				73,864

Obligations under capital leases	—			—			120,000			—				120,000

Total liabilities	31			709,967			1,416,831			(322,170		)		1,804,659

Equity:
Total equity	2,787,823			1,789,262			3,055,067			(4,844,329		)		2,787,823

Total liabilities, redeemable common stock, and equity	$	2,787,854		$	2,499,229		$	4,471,898		$	(5,166,499	)		$	4,592,482




Consolidating Statements of Operations (in thousands)


	For the three months ended June 30, 2014
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Revenues:
Rental income	$	—		$	110		$	103,802		$	(91	)		$	103,821

Tenant reimbursements	—			43			22,891			—				22,934

Hotel income	—			—			6,505			—				6,505

Other property income	—			—			3,555			(58		)		3,497

	—			153			136,753			(149		)		136,757

Expenses:
Property operating costs	—			634			38,289			(91		)		38,832

Hotel operating costs	—			—			4,689			—				4,689

Asset and property management fees:
Related-party	—			4			—			(4		)		—

Other	—			—			675			—				675

Depreciation	—			405			29,764			—				30,169

Amortization	—			13			20,208			—				20,221

Impairment loss on real estate assets	—			—			1,432			—				1,432

General and administrative	47			2,597			5,822			(54		)		8,412

Acquisition expenses	—			—			6,102			—				6,102

	47			3,653			106,981			(149		)		110,532

Real estate operating income (loss)	(47		)	(3,500		)	29,772			—				26,225

Other income (expense):
Interest expense	—			(7,779		)	(15,753		)	4,672				(18,860		)

Interest and other income	1,988			2,686			1,800			(4,672		)		1,802

Loss on interest rate swaps	—			—			(105		)	—				(105		)

Income from equity investment	6,080			12,848			—			(18,928		)		—

	8,068			7,755			(14,058		)	(18,928		)		(17,163		)

Income before income tax expense	8,021			4,255			15,714			(18,928		)		9,062

Income tax expense	—			(1		)	(350		)	—				(351		)

Income from continuing operations	8,021			4,254			15,364			(18,928		)		8,711

Discontinued operations:
Operating loss from discontinued operations	—			—			(40		)	—				(40		)

Loss on disposition of discontinued operations	—			—			(650		)	—				(650		)

Loss from discontinued operations	—			—			(690		)	—				(690		)

Net income	$	8,021		$	4,254		$	14,674		$	(18,928	)		$	8,021

Consolidating Statements of Operations (in thousands)


	For the three months ended June 30, 2013
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Revenues:
Rental income	$	—		$	101		$	103,088		$	(86	)		$	103,103

Tenant reimbursements	—			(20		)	21,286			—				21,266

Hotel income	—			—			6,562			—				6,562

Other property income	—			—			1,013			(47		)		966

	—			81			131,949			(133		)		131,897

Expenses:
Property operating costs	—			594			36,561			(86		)		37,069

Hotel operating costs	—			—			4,820			—				4,820

Asset and property management fees:
Related-party	—			4			—			(4		)		—

Other	—			—			530			—				530

Depreciation	—			328			26,627			—				26,955

Amortization	—			7			19,975			—				19,982

General and administrative	—			4,046			4,954			(43		)		8,957

	—			4,979			93,467			(133		)		98,313

Real estate operating income (loss)	—			(4,898		)	38,482			—				33,584

Other income (expense):
Interest expense	—			(8,148		)	(22,624		)	4,723				(26,049		)

Interest and other income	2,002			2,723			9,111			(4,723		)		9,113

Loss on interest rate swaps	—			—			164			—				164

Income from equity investment	18,599			26,693			—			(45,292		)		—

	20,601			21,268			(13,349		)	(45,292		)		(16,772		)

Income before income tax expense	20,601			16,370			25,133			(45,292		)		16,812

Income tax expense	—			(1		)	(322		)	—				(323		)

Income from continuing operations	20,601			16,369			24,811			(45,292		)		16,489

Discontinued operations:
Operating income from discontinued operations	—			—			4,112			—				4,112

Income from discontinued operations	—			—			4,112			—				4,112

Net income	$	20,601		$	16,369		$	28,923		$	(45,292	)		$	20,601








Consolidating Statements of Operations (in thousands)



	For the six months ended June 30, 2014
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Revenues:
Rental income	$	—		$	219		$	204,349		$	(180	)		$	204,388

Tenant reimbursements	—			89			46,578			—				46,667

Hotel income	—			—			10,566			—				10,566

Other property income	—			—			4,399			(95		)		4,304

	—			308			265,892			(275		)		265,925

Expenses:
Property operating costs	—			1,244			76,748			(180		)		77,812

Hotel operating costs	—			—			8,830			—				8,830

Asset and property management fees:
Related-party	—			8			—			(8		)		—

Other	—			—			964			—				964

Depreciation	—			786			56,687			—				57,473

Amortization	—			22			38,720			—				38,742

Impairment loss on real estate assets	—			—			14,982			—				14,982

General and administrative	76			5,214			10,155			(87		)		15,358

Acquisition expenses	—			—			6,102			—				6,102

	76			7,274			213,188			(275		)		220,263

Real estate operating income (loss)	(76		)	(6,966		)	52,704			—				45,662

Other income (expense):
Interest expense	—			(15,213		)	(30,911		)	9,354				(36,770		)

Interest and other income	3,976			5,381			3,609			(9,354		)		3,612

Loss on interest rate swaps	—			—			(335		)	—				(335		)

Income from equity investment	7,521			21,454			—			(28,975		)		—

	11,497			11,622			(27,637		)	(28,975		)		(33,493		)

Income before income tax expense	11,421			4,656			25,067			(28,975		)		12,169

Income tax expense	—			(2		)	(5		)	—				(7		)

Income from continuing operations	11,421			4,654			25,062			(28,975		)		12,162

Discontinued operations:
Operating income from discontinued operations	—			—			237			—				237

Loss on disposition of discontinued operations	—			—			(978		)	—				(978		)

Loss from discontinued operations	—			—			(741		)	—				(741		)

Net income	$	11,421		$	4,654		$	24,321		$	(28,975	)		$	11,421



Consolidating Statements of Operations (in thousands)



	For the six months ended June 30, 2013
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Revenues:
Rental income	$	—		$	202		$	204,322		$	(115	)		$	204,409

Tenant reimbursements	—			83			43,427			—				43,510

Hotel income	—			—			11,516			—				11,516

Other property income	—			17			1,316			(79		)		1,254

	—			302			260,581			(194		)		260,689

Expenses:
Property operating costs	—			1,069			73,699			(115		)		74,653

Hotel operating costs	—			—			9,081			—				9,081

Asset and property management fees:
Related-party	4,397			7			313			(24		)		4,693

Other	—			—			1,143			—				1,143

Depreciation	—			561			53,104			—				53,665

Amortization	—			14			39,870			—				39,884

General and administrative	—			37,751			8,080			(55		)		45,776

	4,397			39,402			185,290			(194		)		228,895

Real estate operating income (loss)	(4,397		)	(39,100		)	75,291			—				31,794

Other income (expense):
Interest expense	—			(16,325		)	(45,309		)	9,451				(52,183		)

Interest and other income	3,999			5,455			18,221			(9,451		)		18,224

Gain on interest rate swaps	—			—			221			—				221

Income (loss) from equity investment	(1,609		)	45,011			—			(43,402		)		—

	2,390			34,141			(26,867		)	(43,402		)		(33,738		)

Income (loss) before income tax expense	(2,007		)	(4,959		)	48,424			(43,402		)		(1,944		)

Income tax expense	—			(2		)	(220		)	—				(222		)

Income (loss) from continuing operations	(2,007		)	(4,961		)	48,204			(43,402		)		(2,166		)

Discontinued operations:
Operating income (loss) from discontinued operations	—			658			(10,513		)	—				(9,855		)

Gain on disposition of discontinued operations	—			—			10,014			—				10,014

Income (loss) from discontinued operations	—			658			(499		)	—				159

Net income (loss)	$	(2,007	)	$	(4,303	)	$	47,705		$	(43,402	)		$	(2,007	)










Consolidating Statements of Comprehensive Income (in thousands)


	For the three months ended June 30, 2014
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Net income	$	8,021		$	4,254		$	14,674		$	(18,928	)		$	8,021

Market value adjustment to interest rate swap	(43		)	(43		)	—			43				(43		)

Comprehensive income	$	7,978		$	4,211		$	14,674		$	(18,885	)		$	7,978



	For the three months ended June 30, 2013
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Net income	$	20,601		$	16,369		$	28,923		$	(45,292	)		$	20,601

Market value adjustment to interest rate swap	2,168			2,168			—			(2,168		)		2,168

Comprehensive income	$	22,769		$	18,537		$	28,923		$	(47,460	)		$	22,769



	For the six months ended June 30, 2014
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Net income	$	11,421		$	4,654		$	24,321		$	(28,975	)		$	11,421

Market value adjustment to interest rate swap	211			211			—			(211		)		211

Comprehensive income	$	11,632		$	4,865		$	24,321		$	(29,186	)		$	11,632



	For the six months ended June 30, 2013
	Columbia Property Trust			Columbia			Non-			Consolidating				Columbia Property Trust
	(Parent)			Property			Guarantors			adjustments				(Consolidated)
	(Guarantor)			Trust OP
				(the Issuer)
Net income (loss)	$	(2,007	)	$	(4,303	)	$	47,705		$	(43,402	)		$	(2,007	)

Foreign currency translation adjustment	(83		)	—			(83		)	83				(83		)

Market value adjustment to interest rate swap	2,717			2,717			—			(2,717		)		2,717

Comprehensive income (loss)	$	627		$	(1,586	)	$	47,622		$	(46,036	)		$	627


Consolidating Statements of Cash Flows (in thousands)


	For the six months ended June 30, 2014
	Columbia Property Trust			Columbia Property Trust OP			Non-			Eliminations				Columbia Property Trust
	(Parent)			(the Issuer)			Guarantors							(Consolidated)
	(Guarantor)
Cash flows from operating activities	$	(73	)	$	(19,585	)	$	132,641		$	—			$	112,983

Cash flows from investing activities:
Net proceeds from sale of real estate	—			27,131			—			—				27,131

Investment in real estate and related assets	—			(157,776		)	(30,782		)	—				(188,558		)

Investments in subsidiaries	(133,515		)	—			—			133,515				—

Net cash used in investing activities	(133,515		)	(130,645		)	(30,782		)	133,515				(161,427		)

Cash flows from financing activities:
Borrowings, net of fees	—			129,807			(605		)	—				129,202

Repayments of notes payable	—			(55,000		)	(1,300		)	—				(56,300		)

Distributions	(74,979		)	—			—			—				(74,979		)

Intercompany contributions (distributions)	179,565			59,837			(105,887		)	(133,515		)		—

Net cash provided by (used in) financing activities	104,586			134,644			(107,792		)	(133,515		)		(2,077		)

Net decrease in cash and cash equivalents	(29,002		)	(15,586		)	(5,933		)	—				(50,521		)

Cash and cash equivalents, beginning of period	53,322			20,708			25,825			—				99,855

Cash and cash equivalents, end of period	$	24,320		$	5,122		$	19,892		$	—			$	49,334




	For the six months ended June 30, 2013
	Columbia Property Trust			Columbia Property Trust OP			Non-			Columbia Property Trust
	(Parent)			(the Issuer)			Guarantors			(Consolidated)
	(Guarantor)
Cash flows from operating activities	$	—		$	(41,902	)	$	144,223		$	102,321

Cash flows from investing activities:
Net proceeds from sale of real estate	—			65,928			—			65,928

Investment in real estate and related assets	—			(3,355		)	(28,956		)	(32,311		)

Net cash provided by (used in) investing activities	—			62,573			(28,956		)	33,617

Cash flows from financing activities:
Borrowings, net of fees	—			119,801			(41		)	119,760

Repayments of line of credit and notes payable	—			(111,000		)	(1,227		)	(112,227		)

Issuance of common stock, net of redemptions and fees	(32,328		)	—			—			(32,328		)

Distributions	(103,030		)	—			—			(103,030		)

Intercompany transfers, net	136,389			(30,808		)	(105,581		)	—

Net cash provided by (used in) financing activities	1,031			(22,007		)	(106,849		)	(127,825		)

Net increase (decrease) in cash and cash equivalents	1,031			(1,336		)	8,418			8,113

Effect of foreign exchange rate on cash and cash equivalents	—			—			(103		)	(103		)

Cash and cash equivalents, beginning of period	20,914			4,822			27,921			53,657

Cash and cash equivalents, end of period	$	21,945		$	3,486		$	36,236		$	61,667

Subsequent_Event

Subsequent Event	6 Months Ended
Subsequent Event	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Event	'
	Subsequent Event
	Columbia Property Trust has evaluated subsequent events in connection with the preparation of the consolidated financial statements and notes thereto included in this report on Form 10-Q and noted the following in addition to those disclosed elsewhere in this report:
	Property Disposition
	On July 1, 2014, Columbia Property Trust closed on the disposition of the 7031 Columbia Gateway Drive Building. This disposition is described in Note 3, Real Estate and Other Transactions.
	Amended Articles of Incorporation
	Columbia Property Trust amended its articles of incorporation on July 1, 2014, which reduced the number of common shares authorized from 900,000,000 to 225,000,000, as discussed in Note 7, Stockholders' Equity.
	Dividend Declaration
	On August 6, 2014, the board of directors declared dividends for the third quarter of 2014 in the amount of $0.30 per share, payable on September 16, 2014 to stockholders of record on September 2, 2014.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements of Columbia Property Trust have been prepared in accordance with the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"), including the instructions to Form 10-Q and Article 10 of Regulation S-X, and do not include all of the information and footnotes required by U.S. generally accepted accounting principles ("GAAP") for complete financial statements. In the opinion of management, the statements for these unaudited interim periods presented include all adjustments, which are of a normal and recurring nature, necessary for a fair and consistent presentation of the results for such periods. Results for these interim periods are not necessarily indicative of a full year's results. Columbia Property Trust's consolidated financial statements include the accounts of Columbia Property Trust, Columbia Property Trust OP, and any variable interest entity in which Columbia Property Trust or Columbia Property Trust OP was deemed the primary beneficiary. With respect to entities that are not variable interest entities, Columbia Property Trust's consolidated financial statements also include the accounts of any entity in which Columbia Property Trust, Columbia Property Trust OP, or their subsidiaries own a controlling financial interest and any limited partnership in which Columbia Property Trust, Columbia Property Trust OP, or its subsidiaries own a controlling general partnership interest. All intercompany balances and transactions have been eliminated in consolidation.
Fair Value Measurements	'
	Fair Value Measurements
	Columbia Property Trust estimates the fair value of its assets and liabilities (where currently required under GAAP) consistent with the provisions of Accounting Standard Codification ("ASC") 820, Fair Value Measurements ("ASC 820"). Under this standard, fair value is defined as the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date. While various techniques and assumptions can be used to estimate fair value depending on the nature of the asset or liability, the accounting standard for fair value measurements and disclosures provides the following fair value technique parameters and hierarchy, depending upon availability:
	Level 1 – Assets or liabilities for which the identical term is traded on an active exchange, such as publicly traded instruments or futures contracts.
	Level 2 – Assets and liabilities valued based on observable market data for similar instruments.
	Level 3 – Assets or liabilities for which significant valuation assumptions are not readily observable in the market. Such assets or liabilities are valued based on the best available data, some of which may be internally developed. Significant assumptions may include risk premiums that a market participant would consider.
Real Estate Assets	'
	Real Estate Assets
	Columbia Property Trust is required to make subjective assessments as to the useful lives of its depreciable assets. Columbia Property Trust considers the period of future benefit of the asset to determine the appropriate useful lives. These assessments have a direct impact on net income. The estimated useful lives of its assets by class are as follows:


	Buildings		40 years
	Building improvements		5-25 years
	Site improvements		15 years
	Tenant improvements		Shorter of economic life or lease term
	Intangible lease assets		Lease term
Evaluating the Recoverability of Real Estate Assets	'
	Evaluating the Recoverability of Real Estate Assets
	Columbia Property Trust continually monitors events and changes in circumstances that could indicate that the carrying amounts of its real estate and related intangible assets, of both operating properties and properties under construction, in which Columbia Property Trust has an ownership interest, either directly or through investments in joint ventures, may not be recoverable. When indicators of potential impairment are present that suggest that the carrying amounts of real estate assets and related intangible assets (liabilities) may not be recoverable, Columbia Property Trust assesses the recoverability of these assets by determining whether the respective carrying values will be recovered through the estimated undiscounted future operating cash flows expected from the use of the assets and their eventual disposition. In the event that such expected undiscounted future cash flows do not exceed the carrying values, Columbia Property Trust adjusts the carrying value of the real estate assets and related intangible assets to the estimated fair values, pursuant to the property, plant, and equipment accounting standard for the impairment or disposal of long-lived assets, and recognizes an impairment loss. Estimated fair values are calculated based on the following information, in order of preference, depending upon availability: (i) recently quoted market prices, (ii) market prices for comparable properties, or (iii) the present value of future cash flows, including estimated salvage value. Certain of Columbia Property Trust's assets may be carried at more than an amount that could be realized in a current disposition transaction.
	Projections of expected future operating cash flows require that Columbia Property Trust estimate future market rental income amounts subsequent to the expiration of current lease agreements, property operating expenses, the number of months it takes to re-lease the property, and the number of years the property is held for investment, among other factors. The subjectivity of assumptions used in the future cash flow analysis, including discount rates, could result in an incorrect assessment of the property's fair value and could result in the misstatement of the carrying value of Columbia Property Trust's real estate assets and related intangible assets and net income (loss).
Assets Held for Sale	'
	Assets Held for Sale
	Columbia Property Trust classifies assets as held for sale according to ASC 360, Accounting for the Impairment or Disposal of Long-Lived Assets ("ASC 360"). According to ASC 360, assets are considered held for sale when the following criteria are met:

	•	Management, having the authority to approve the action, commits to a plan to sell the property.

	•	The property is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of such property.

	•	An active program to locate a buyer and other actions required to complete the plan to sell the property have been initiated.

	•	The sale of the property is probable, and transfer of the property is expected to qualify for recognition as a completed sale, within one year.

	•	The property is being actively marketed for sale at a price that is reasonable in relation to its current fair value.

	•	Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.
	At such time that a property is determined to be held for sale, its carrying amount is reduced to the lower of its depreciated book value or its estimated fair value, less costs to sell, and depreciation is no longer recognized.
Intangible Assets and Liabilities Arising from In-Place Leases	'
	Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessee
	In-place ground leases where Columbia Property Trust is the lessee may have value associated with effective contractual rental rates that are above or below market rates at the time of execution or assumption. Such values are calculated based on the present value (using a discount rate that reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place lease and (ii) management's estimate of fair market lease rates for the corresponding in-place lease at the time of execution or assumption, measured over a period equal to the remaining terms of the leases. The capitalized above-market and below-market in-place lease values are recorded as intangible lease liabilities and assets, respectively, and are amortized as an adjustment to property operating cost over the remaining term of the respective leases.
	Intangible Assets and Liabilities Arising from In-Place Leases where Columbia Property Trust is the Lessor
	Upon the acquisition of real properties, Columbia Property Trust allocates the purchase price of properties to tangible assets, consisting of land, building, site improvements, and identified intangible assets and liabilities, including the value of in-place leases, based in each case on Columbia Property Trust's estimate of their fair values in accordance with ASC 820 (see Fair Value Measurements section above for additional detail).
Prepaid Expenses and Other Assets	'
	Prepaid Expenses and Other Assets
	Prepaid expenses and other assets primarily are comprised of escrow accounts held by lenders to pay future real estate taxes, insurance and tenant improvements, notes receivable, nontenant receivables, prepaid taxes, insurance and operating costs, certain corporate assets, hotel inventory, and deferred tax assets. Prepaid expenses and other assets will be expensed as incurred or reclassified to other asset accounts upon being put into service in future periods.
Interest Rate Swap Agreements	'
	Interest Rate Swap Agreements
	Columbia Property Trust enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. Columbia Property Trust does not enter into derivative or interest rate swap transactions for speculative purposes; however, certain of its derivatives may not qualify for hedge accounting treatment. Columbia Property Trust records the fair value of its interest rate swaps either as prepaid expenses and other assets or as accounts payable, accrued expenses, and accrued capital expenditures. Changes in the fair value of the effective portion of interest rate swaps that are designated as cash flow hedges are recorded as other comprehensive income, while changes in the fair value of the ineffective portion of a hedge, if any, is recognized currently in earnings. Changes in the fair value of interest rate swaps that do not qualify for hedge accounting treatment are recorded as gain (loss) on interest rate swaps. Amounts received or paid under interest rate swap agreements are recorded as interest expense for contracts that qualify for hedge accounting treatment and as gain (loss) on interest rate swaps for contracts that do not qualify for hedge accounting treatment.
Income Taxes	'
	Income Taxes
	Columbia Property Trust has elected to be taxed as a REIT under the Internal Revenue Code of 1986, as amended (the "Code"), and has operated as such beginning with its taxable year ended December 31, 2003. To qualify as a REIT, Columbia Property Trust must meet certain organizational and operational requirements, including a requirement to distribute at least 90% of its REIT taxable income, as defined by the Code, to its stockholders. As a REIT, Columbia Property Trust generally is not subject to income tax on income it distributes to stockholders. Columbia Property Trust's stockholder distributions typically exceed its taxable income due to the inclusion of noncash expenses, such as depreciation, in taxable income. As a result, Columbia Property Trust typically does not incur federal income taxes other than as described in the following paragraph. Columbia Property Trust is, however, subject to certain state and local taxes related to the operations of properties in certain locations, which have been provided for in the accompanying consolidated financial statements.
	Columbia Property Trust TRS, LLC ("Columbia Property Trust TRS"), Columbia KCP TRS, LLC ("Columbia KCP TRS"), and Columbia Energy TRS, LLC ("Columbia Energy TRS") (collectively, the "TRS Entities") are wholly owned subsidiaries of Columbia Property Trust, are organized as Delaware limited liability companies, and operate, among other things, a full-service hotel. Columbia Property Trust has elected to treat the TRS Entities as taxable REIT subsidiaries. Columbia Property Trust may perform certain additional, noncustomary services for tenants of its buildings through the TRS Entities; however, any earnings related to such services are subject to federal and state income taxes. In addition, for Columbia Property Trust to continue to qualify as a REIT, Columbia Property Trust must limit its investments in taxable REIT subsidiaries to 25% of the value of the total assets. The TRS Entities' deferred tax assets and liabilities represent temporary differences between the financial reporting basis and the tax basis of assets and liabilities based on the enacted rates expected to be in effect when the temporary differences reverse. If applicable, Columbia Property Trust records interest and penalties related to uncertain tax positions as general and administrative expense in the accompanying consolidated statements of operations.
New Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In April 2014, FASB issued ASU 2014-08, which raises the threshold used to determine whether revenues and expenses associated with dispositions are reclassified to discontinued operations in the statement of operations. Under the new standard, typical assets sales will remain in continuing operations; whereas, assets sales that represents a strategic shift in operations (for example, exiting a major geographical area) would be reclassified to discontinued operations. ASU 2014-08 is required beginning with the first quarter of 2015; however, Columbia Property Trust elected to adopt the new standard effective April 1, 2014.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Schedule of Estimated Useful Lives for Real Estate Assets	'
	The estimated useful lives of its assets by class are as follows:


	Buildings		40 years
	Building improvements		5-25 years
	Site improvements		15 years
	Tenant improvements		Shorter of economic life or lease term
	Intangible lease assets		Lease term
Schedule of Recognized Fair Value Adjustments for Real Estate Properties	'
	The table below represents the detail of the adjustments recognized using Level 3 inputs.
	For the three and six months ended June 30, 2013 (in thousands):


	Property		Net Book Value				Impairment Loss Recognized				Fair Value
	120 Eagle Rock		$	23,808			$	(11,708	)		$	12,100

	333 & 777 Republic Drive		$	13,359			$	(5,159	)		$	8,200

Schedule of Intangible Assets and Liabilities	'
	As of June 30, 2014 and December 31, 2013, Columbia Property Trust had the following gross intangible in-place lease assets and liabilities (in thousands):


			Intangible Lease Assets								Intangible				Intangible
											Lease				Below-Market
											Origination				In-Place Lease
			Above-Market				Absorption				Costs				Liabilities
			In-Place				Period Costs
			Lease Assets
	June 30, 2014	Gross	$	79,982			$	395,819			$	360,660			$	159,629

		Accumulated Amortization	(59,032		)		(241,922		)		(225,859		)		(82,664		)
		Net	$	20,950			$	153,897			$	134,801			$	76,965

	December 31, 2013	Gross	$	80,836			$	388,686			$	365,487			$	150,364

		Accumulated Amortization	(56,859		)		(229,065		)		(216,598		)		(76,500		)
		Net	$	23,977			$	159,621			$	148,889			$	73,864

	Columbia Property Trust recognized the following amortization of intangible lease assets and liabilities (in thousands):


		Intangible Lease Assets								Intangible				Intangible
										Lease				Below-Market
										Origination				In-Place Lease
		Above-Market				Absorption				Costs				Liabilities
		In-Place				Period Costs
		Lease Assets
	For the three months ended June 30, 2014	$	1,350			$	9,178			$	8,440			$	3,778

	For the three months ended June 30, 2013	$	1,453			$	9,919			$	10,017			$	3,705

	For the six months ended June 30, 2014	$	2,706			$	17,251			$	16,873			$	6,859

	For the six months ended June 30, 2013	$	3,138			$	20,054			$	19,941			$	7,431

	The remaining net intangible assets and liabilities as of June 30, 2014, will be amortized as follows (in thousands):


		Intangible Lease Assets								Intangible				Intangible
										Lease				Below-Market
										Origination				In-Place Lease
		Above-Market				Absorption				Costs				Liabilities
		In-Place				Period Costs
		Lease Assets
	For the six months ended December 31, 2014	$	2,665			$	18,353			$	16,645			$	7,870

	For the years ending December 31:
	2015	4,492				31,302				29,937				13,302

	2016	3,760				23,430				22,897				10,091

	2017	1,891				17,208				16,342				7,684

	2018	1,087				13,297				11,834				6,730

	2019	1,047				12,261				10,681				6,074

	Thereafter	6,008				38,046				26,465				25,214

		$	20,950			$	153,897			$	134,801			$	76,965

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	'
	As of June 30, 2014, the remaining net below-market lease asset will be amortized as follows (in thousands):


	For the six months ended December 31, 2014	$	1,036

	For the years ending December 31:
	2015	2,069

	2016	2,069

	2017	2,069

	2018	2,069

	2019	2,069

	Thereafter	85,207

		$	96,588

Schedule of Interest Rate Derivatives	'
	The following tables provide additional information related to Columbia Property Trust's interest rate swaps (in thousands):


					Estimated Fair Value as of
	Instrument Type		Balance Sheet Classification		June 30,				December 31,
					2014				2013
	Derivatives designated as hedging instruments:
	Interest rate contracts		Accounts payable		$	(3,096	)		$	(3,307	)
	Derivatives not designated as hedging instruments:
	Interest rate contracts		Accounts payable		$	(5,255	)		$	(7,579	)
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position	'
	Columbia Property Trust applied the provisions of ASC 820 in recording its interest rate swaps at fair value. The fair values of the interest rate swaps, classified under Level 2, were determined using a third-party proprietary model that is based on prevailing market data for contracts with matching durations, current and anticipated London Interbank Offered Rate ("LIBOR") information, and reasonable estimates about relevant future market conditions. Columbia Property Trust has determined that the fair value, as determined by the third party, is reasonable. The fair value of Columbia Property Trust's interest rate swaps were $(8.4) million and $(10.9) million at June 30, 2014 and December 31, 2013, respectively.


		Six months ended
		June 30,
		2014				2013
	Market value adjustment to interest rate swaps designated as hedging instruments and included in other comprehensive income	$	211			$	2,717

	Gain (loss) on interest rate swap recognized through earnings	$	(335	)		$	221

Real_Estate_and_Other_Transact1

Real Estate and Other Transactions (Tables)	6 Months Ended
Real Estate and Other Transactions (Tables)	Jun. 30, 2014
Real Estate [Abstract]	'
Schedule of Real Estate Property Acquired	'
	During the six months ended June 30, 2014, Columbia Property Trust acquired the following property (in thousands):


	Property Name		City		State		Date		Land			Buildings				Intangible Lease Assets		Intangible Lease Origination Costs		Intangible Below-			Total		Lease
							Acquired					and								Market			Purchase		Details
												Improvements								Lease			Price
																				Liability
	221 Main Street Building		San Francisco		CA		22-Apr-14		$	60,509		$	161,853			$	12,776	$	3,475	$	(10,323	)	$	228,290	(1)
	221 Main Street Building		San Francisco		CA		22-Apr-14		$	60,509		$	161,853			$	12,776	$	3,475	$	(10,323	)	$	228,290	(1)

	(1)	As of the acquisition date, the 221 Main Street Building was 82.8% leased to 40 tenants, including DocuSign, Inc. (15.7%). No other tenants lease more than 10% of the building, based on annualized lease revenue.
Business Acquisition, Pro Forma Information	'
	The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisition of the 221 Main Street Building been consummated as of January 1, 2013 (in thousands).


		Three months ended								Six months ended
		June 30,								June 30,
		2014				2013				2014			2013
	Revenues	$	137,482			$	134,708			$	269,863		$	266,414
	Revenues	$	137,482			$	134,708			$	269,863		$	266,414
	Net income (loss)	$	14,241			$	20,113			$	18,014		$	(8,904	)
	Net income (loss)	$	14,241			$	20,113			$	18,014		$	(8,904	)
	Net income (loss) per share - basic	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Net income (loss) per share - basic	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Net income (loss) per share - diluted	$	0.11			$	0.15			$	0.14		$	(0.07	)
	Net income (loss) per share - diluted	$	0.11			$	0.15			$	0.14		$	(0.07	)
	The following unaudited pro forma financial results for Columbia Property Trust have been prepared for informational purposes only and are not necessarily indicative of future results or of actual results that would have been achieved had the acquisitions of Columbia Property Trust Advisory Services and Columbia Property Trust Services been consummated as of January 1, 2013 (in thousands).


		Three months ended				Six months ended
		June 30,				June 30,
		2014		2013		2014		2013
	Revenues	*		*		*		$	261,848
	Revenues	*		*		*		$	261,848
	Net income	*		*		*		$	31,770
	Net income	*		*		*		$	31,770

	*	Columbia Property Trust owned Columbia Property Trust Advisory Services and Columbia Property Trust Services for all of the three months ended June 30, 2014 and 2013, and the six months ended June 30, 2014.

Line_of_Credit_and_Notes_Payab1

Line of Credit and Notes Payable (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of line of credit and notes payable indebtedness outstanding	'
	As of June 30, 2014 and December 31, 2013, Columbia Property Trust had the following line of credit and notes payable indebtedness (excluding bonds payable; see Note 5, Bonds Payable) in thousands:


	Facility	June 30,		December 31,
		2014		2013
	$450 Million Term Loan	$	450,000	$	450,000

	Market Square Buildings mortgage note	325,000		325,000

	333 Market Street Building mortgage note	207,187		207,559

	100 East Pratt Street Building mortgage note	105,000		105,000

	JPMorgan Chase Credit Facility	75,000		—

	221 Main Street Building mortgage note	73,000		—

	263 Shuman Boulevard Building mortgage note	49,000		49,000

	SanTan Corporate Center mortgage notes	39,000		39,000

	One Glenlake Building mortgage note	33,413		34,713

	215 Diehl Road Building mortgage note	21,000		21,000

	544 Lakeview Building mortgage note	9,044		8,977

	Total indebtedness	$	1,386,644	$	1,240,249

Stockholders_Equity_Tables

Stockholder's Equity (Tables)	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Summary of the Activity of Employee Stock Grants	'
	A summary of the activity for the employee stock grants under the 2013 Long-Term Incentive Plan for the six months ended June 30, 2014, follows:


			Shares			Weighted-Average,
			(in thousands)			Grant-Date Fair Value(1)
	Unvested shares as of January 1, 2014		—			$	—

	Granted		144			$	24.82

	Vested		(36	)		$	24.82

	Forfeited		(1	)		$	24.82

	Unvested shares as of June 30, 2014		107		(2)	$	24.82


	(1)	Columbia Property Trust determined the weighted-average, grant-date fair value using the market closing price on the date of the grant.

	(2)	As of June 30, 2014, we expect approximately 101,000 of the 107,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the 2013 Long-Term Incentive Plan.
Summary of Shares Granted to Independent Directors	'
	A summary of these grants, which were made under the 2013 Long-Term Incentive Plan follows:


			Date of Grant		Shares			Weighted Average
								Grant-Date Fair Value
	Q1 2014 Director Grant		January 21, 2014		3,344			$	24.82

	Q2 2014 Director Grant		April 1, 2014		2,968			$	27.22

	Q3 2014 Director Grant		July 1, 2014		3,016			$	25.78

Supplemental_Disclosures_of_No1

Supplemental Disclosures of Noncash Investing and Financing Activities (Tables)	6 Months Ended
	Jun. 30, 2014
Supplemental Cash Flow Information [Abstract]	'
Schedule of Other Significant Noncash Transactions	'
	Outlined below are significant noncash investing and financing activities for the six months ended June 30, 2014 and 2013 (in thousands):


		Six months ended
		June 30,
		2014		2013
	Investment in real estate funded with other assets	$	3,807	$	—

	Other assets assumed at acquisition	$	501	$	741

	Other liabilities assumed at acquisition	$	589	$	741

	Other liabilities settled at disposition	$	—	$	872

	Note payable assumed at acquisition	$	73,000	$	—

	Interest accruing to notes payable	$	—	$	159

	Amortization of premiums (discounts) on debt	$	178	$	304

	Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	$	211	$	2,717

	Accrued capital expenditures and deferred lease costs	$	18,431	$	13,408

	Accrued deferred financing costs	$	31	$	—

	Accrued redemptions of common stock	$	—	$	2,079

	Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	$	708	$	—

	Increase in redeemable common stock	$	—	$	22,226

RelatedParty_Transactions_and_1

Related-Party Transactions and Agreements (Tables)	6 Months Ended
	Jun. 30, 2014
Related Party Transactions [Abstract]	'
Schedule of Related Party Transactions	'
	Pursuant to the terms of the agreements described above, Columbia Property Trust incurred the following related-party costs for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):


		Three months ended				Six months ended
		June 30,				June 30,
		2014		2013		2014		2013
	Investor services	$	—	$	278	$	—	$	369

	Administrative reimbursements, net(1)	—		70		—		1,891

	Other	—		20		—		69

	Consulting fees(2)	—		—		—		25,417

	Transition services(3)	—		—		—		5,750

	Asset management fees	—		—		—		5,083

	Property management fees	—		—		—		523

	Construction fees(4)	—		—		—		139

	Total	$	—	$	368	$	—	$	39,241


	-1	Administrative reimbursements are presented net of reimbursements from tenants of approximately $0.7 million for the six months ended June 30, 2013.

	(2)	$10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended June 30, 2013. The remaining $15.2 million was paid ratably over the remainder of 2013.

	(3)	$3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended June 30, 2013; $1.5 million was paid in the third quarter of 2013; and the remaining $1.3 million was paid in the fourth quarter of 2013.

	(4)	Construction fees are capitalized to real estate assets as incurred.

Held_for_Sale_and_Discontinued1

Held for Sale and Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2014
Discontinued Operation, Additional Disclosures [Abstract]	'
Major classes of assets and liabilities classified as held for sale	'
	The major classes of assets and liabilities classified as held for sale as of June 30, 2014, is provided below (in thousands):


		30-Jun-14
	Real estate assets held for sale:
	Real estate assets, at cost:
	Land	$	10,232

	Buildings and improvements, less accumulated depreciation of $7,829	37,963

	Intangible lease assets, less accumulated amortization of $6,698	1,614

	Total real estate assets held for sale, net	$	49,809


	Other assets held for sale:
	Tenant receivables	$	403

	Prepaid expenses and other assets	26

	Intangible lease origination costs, less accumulated amortization of $4,244	1,023

	Deferred lease costs, less accumulated amortization of $52	87

	Total other assets held for sale, net	$	1,539


	Liabilities held for sale:
	Accounts payable, accrued expenses, and accrued capital expenditures	$	85

	Deferred income	346

	Intangible lease liabilities, less accumulated amortization of $3,719	896

	Total liabilities held for sale, net	$	1,327

Schedule of revenues and expenses of the above-described discontinued operations	'
	The following table shows the revenues and expenses of the above-described discontinued operations (in thousands):


		Three months ended						Six months ended
		June 30,						June 30,
		2014			2013			2014			2013
	Revenues:
	Rental income	$	1		$	13,848		$	4		$	28,970

	Tenant reimbursements	151			3,192			100			6,557

	Other property income	—			292			—			292

		152			17,332			104			35,819

	Expenses:
	Property operating costs	82			6,068			(265		)	12,373

	Asset and property management fees	—			150			7			1,308

	Depreciation	—			3,653			—			7,570

	Amortization	—			2,345			—			4,390

	Impairment loss on real estate assets	—			—			—			16,867

	General and administrative	110			37			128			1,072

	Total expenses	192			12,253			(130		)	43,580

	Operating income (loss)	(40		)	5,079			234			(7,761		)

	Other income (expense):
	Interest expense	—			(1,126		)	—			(2,252		)

	Interest and other income	—			161			3			164

		—			(965		)	3			(2,088		)

	Income (loss) from discontinued operations before income tax expense	(40		)	4,114			237			(9,849		)

	Income tax expense	—			(2		)	—			(6		)

	Income (loss) from discontinued operations	(40		)	4,112			237			(9,855		)

	Gain (loss) on disposition of discontinued operations	(650		)	—			(978		)	10,014

	Income (loss) from discontinued operations	$	(690	)	$	4,112		$	(741	)	$	159

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of Basic and Diluted Earnings per Share Computations	'
	The following table reconciles the numerator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):


		Three months ended June 30,							Six months ended June 30,
		2014				2013			2014			2013
	Net income (loss)	$	8,021			$	20,601		$	11,421		$	(2,007	)

	Distributions paid on unvested shares	(32		)		—			(64		)	—

	Net income (loss) used to calculate basic and diluted earnings per share	$	7,989			$	20,601		$	11,357		$	(2,007	)

	The following table reconciles the denominator for the basic and diluted earnings per share computations shown on the consolidated statements of income for the three and six months ended June 30, 2014 and 2013, respectively (in thousands):


		Three months ended						Six months ended
		June 30,						June 30,
		2014			2013			2014		2013
	Weighted-average common shares - basic	124,860			135,816			124,855		136,166

	Plus incremental weighted-average shares from time-vested conversions less assumed share repurchases:
	2013 LTIP Employee Grant	27			—			25		—

	2014 LTIP Employee Grant	32			—			21		—

	Weighted-average common shares - diluted	124,919			135,816			124,901		136,166

Financial_Information_for_Pare1

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Tables)	6 Months Ended
	Jun. 30, 2014
Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non Guarantor Subsidiaries [Abstract]	'
Condensed Consolidating Balance Sheets	'
	Condensed Consolidating Balance Sheets (in thousands)


		As of June 30, 2014
		Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
		(Parent)				Property				Guarantors				adjustments				(Consolidated)
		(Guarantor)				Trust OP
						(the Issuer)
	Assets:
	Real estate assets, at cost:
	Land	$	—			$	6,241			$	742,827			$	—			$	749,068

	Buildings and improvements, net	—				23,903				2,996,890				—				3,020,793

	Intangible lease assets, net	—				—				269,821				—				269,821

	Construction in progress	—				2,074				16,869				—				18,943

	Real estate assets held for sale, net	—				—				49,809				—				49,809

	Total real estate assets	—				32,218				4,076,216				—				4,108,434

	Cash and cash equivalents	24,320				5,122				19,892				—				49,334

	Investment in subsidiaries	2,523,593				2,263,021				—				(4,786,614		)		—

	Tenant receivables, net of allowance	—				220				6,934				—				7,154

	Straight line rent receivable	—				31				117,960				—				117,991

	Prepaid expenses and other assets	177,272				148,845				23,030				(321,173		)		27,974

	Deferred financing costs, net	—				7,505				2,022				—				9,527

	Intangible lease origination costs, net	—				—				133,778				—				133,778

	Deferred lease costs, net	—				1,835				103,805				—				105,640

	Investment in development authority bonds	—				—				120,000				—				120,000

	Other assets held for sale, net	—				—				1,539				—				1,539

	Total assets	$	2,725,185			$	2,458,797			$	4,605,176			$	(5,107,787	)		$	4,681,371

	Liabilities:
	Line of credit and notes payable	$	—			$	525,000			$	1,181,232			$	(319,588	)		$	1,386,644

	Bonds payable, net	—				249,056				—				—				249,056

	Accounts payable, accrued expenses, and accrued capital expenditures	—				11,155				87,582				—				98,737

	Due to affiliates	—				18				1,567				(1,585		)		—

	Deferred income	—				184				24,169				—				24,353

	Intangible lease liabilities, net	—				—				76,069				—				76,069

	Obligations under capital leases	—				—				120,000				—				120,000

	Liabilities held for sale, net	—				—				1,327				—				1,327

	Total liabilities	—				785,413				1,491,946				(321,173		)		1,956,186

Equity:
Total equity	2,725,185				1,673,384				3,113,230				(4,786,614		)		2,725,185

Total liabilities and equity	$	2,725,185			$	2,458,797			$	4,605,176			$	(5,107,787	)		$	4,681,371




Condensed Consolidating Balance Sheets (in thousands)


	As of December 31, 2013
	Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
	(Parent)				Property				Guarantors				adjustments				(Consolidated)
	(Guarantor)				Trust OP
					(the Issuer)
Assets:
Real estate assets, at cost:
Land	$	—			$	6,241			$	700,697			$	—			$	706,938

Building and improvements, net	—				24,185				2,952,102				—				2,976,287

Intangible lease assets, net	—				—				281,220				—				281,220

Construction in progress	—				28				7,921				—				7,949

Total real estate assets	—				30,454				3,941,940				—				3,972,394

Cash and cash equivalents	53,322				20,708				25,825				—				99,855

Investment in subsidiaries	2,557,347				2,286,982				—				(4,844,329		)		—

Tenant receivables, net of allowance	—				—				7,414				—				7,414

Straight line rent receivable	—				22				113,570				—				113,592

Prepaid expenses and other assets	177,185				150,806				26,602				(322,170		)		32,423

Deferred financing costs, net	—				8,762				1,626				—				10,388

Intangible lease origination costs, net	—				—				148,889				—				148,889

Deferred lease costs, net	—				1,495				86,032				—				87,527

Investment in development authority bonds	—				—				120,000				—				120,000

Total assets	$	2,787,854			$	2,499,229			$	4,471,898			$	(5,166,499	)		$	4,592,482

Liabilities:
Lines of credit and notes payable	$	—			$	450,000			$	1,110,838			$	(320,589	)		$	1,240,249

Bonds payable, net	—				248,930				—				—				248,930

Accounts payable, accrued expenses, and accrued capital expenditures	31				11,816				87,831				—				99,678

Due to (from) affiliates	—				(925		)		2,506				(1,581		)		—

Deferred income	—				146				21,792				—				21,938

Intangible lease liabilities, net	—				—				73,864				—				73,864

Obligations under capital leases	—				—				120,000				—				120,000

Total liabilities	31				709,967				1,416,831				(322,170		)		1,804,659

Equity:
Total equity	2,787,823				1,789,262				3,055,067				(4,844,329		)		2,787,823

Total liabilities, redeemable common stock, and equity	$	2,787,854			$	2,499,229			$	4,471,898			$	(5,166,499	)		$	4,592,482

Consolidating Statements of Operations	'
	Consolidating Statements of Operations (in thousands)


		For the three months ended June 30, 2014
		Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
		(Parent)				Property				Guarantors				adjustments				(Consolidated)
		(Guarantor)				Trust OP
						(the Issuer)
	Revenues:
	Rental income	$	—			$	110			$	103,802			$	(91	)		$	103,821

	Tenant reimbursements	—				43				22,891				—				22,934

	Hotel income	—				—				6,505				—				6,505

	Other property income	—				—				3,555				(58		)		3,497

		—				153				136,753				(149		)		136,757

	Expenses:
	Property operating costs	—				634				38,289				(91		)		38,832

	Hotel operating costs	—				—				4,689				—				4,689

	Asset and property management fees:
	Related-party	—				4				—				(4		)		—

	Other	—				—				675				—				675

	Depreciation	—				405				29,764				—				30,169

	Amortization	—				13				20,208				—				20,221

	Impairment loss on real estate assets	—				—				1,432				—				1,432

	General and administrative	47				2,597				5,822				(54		)		8,412

	Acquisition expenses	—				—				6,102				—				6,102

		47				3,653				106,981				(149		)		110,532

	Real estate operating income (loss)	(47		)		(3,500		)		29,772				—				26,225

	Other income (expense):
	Interest expense	—				(7,779		)		(15,753		)		4,672				(18,860		)

	Interest and other income	1,988				2,686				1,800				(4,672		)		1,802

	Loss on interest rate swaps	—				—				(105		)		—				(105		)

	Income from equity investment	6,080				12,848				—				(18,928		)		—

		8,068				7,755				(14,058		)		(18,928		)		(17,163		)

	Income before income tax expense	8,021				4,255				15,714				(18,928		)		9,062

	Income tax expense	—				(1		)		(350		)		—				(351		)

	Income from continuing operations	8,021				4,254				15,364				(18,928		)		8,711

	Discontinued operations:
	Operating loss from discontinued operations	—				—				(40		)		—				(40		)

Loss on disposition of discontinued operations	—				—				(650		)		—				(650		)

Loss from discontinued operations	—				—				(690		)		—				(690		)

Net income	$	8,021			$	4,254			$	14,674			$	(18,928	)		$	8,021

Consolidating Statements of Operations (in thousands)


	For the three months ended June 30, 2013
	Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
	(Parent)				Property				Guarantors				adjustments				(Consolidated)
	(Guarantor)				Trust OP
					(the Issuer)
Revenues:
Rental income	$	—			$	101			$	103,088			$	(86	)		$	103,103

Tenant reimbursements	—				(20		)		21,286				—				21,266

Hotel income	—				—				6,562				—				6,562

Other property income	—				—				1,013				(47		)		966

	—				81				131,949				(133		)		131,897

Expenses:
Property operating costs	—				594				36,561				(86		)		37,069

Hotel operating costs	—				—				4,820				—				4,820

Asset and property management fees:
Related-party	—				4				—				(4		)		—

Other	—				—				530				—				530

Depreciation	—				328				26,627				—				26,955

Amortization	—				7				19,975				—				19,982

General and administrative	—				4,046				4,954				(43		)		8,957

	—				4,979				93,467				(133		)		98,313

Real estate operating income (loss)	—				(4,898		)		38,482				—				33,584

Other income (expense):
Interest expense	—				(8,148		)		(22,624		)		4,723				(26,049		)

Interest and other income	2,002				2,723				9,111				(4,723		)		9,113

Loss on interest rate swaps	—				—				164				—				164

Income from equity investment	18,599				26,693				—				(45,292		)		—

	20,601				21,268				(13,349		)		(45,292		)		(16,772		)

Income before income tax expense	20,601				16,370				25,133				(45,292		)		16,812

Income tax expense	—				(1		)		(322		)		—				(323		)

Income from continuing operations	20,601				16,369				24,811				(45,292		)		16,489

Discontinued operations:
Operating income from discontinued operations	—				—				4,112				—				4,112

Income from discontinued operations	—				—				4,112				—				4,112

Net income	$	20,601			$	16,369			$	28,923			$	(45,292	)		$	20,601








Consolidating Statements of Operations (in thousands)



	For the six months ended June 30, 2014
	Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
	(Parent)				Property				Guarantors				adjustments				(Consolidated)
	(Guarantor)				Trust OP
					(the Issuer)
Revenues:
Rental income	$	—			$	219			$	204,349			$	(180	)		$	204,388

Tenant reimbursements	—				89				46,578				—				46,667

Hotel income	—				—				10,566				—				10,566

Other property income	—				—				4,399				(95		)		4,304

	—				308				265,892				(275		)		265,925

Expenses:
Property operating costs	—				1,244				76,748				(180		)		77,812

Hotel operating costs	—				—				8,830				—				8,830

Asset and property management fees:
Related-party	—				8				—				(8		)		—

Other	—				—				964				—				964

Depreciation	—				786				56,687				—				57,473

Amortization	—				22				38,720				—				38,742

Impairment loss on real estate assets	—				—				14,982				—				14,982

General and administrative	76				5,214				10,155				(87		)		15,358

Acquisition expenses	—				—				6,102				—				6,102

	76				7,274				213,188				(275		)		220,263

Real estate operating income (loss)	(76		)		(6,966		)		52,704				—				45,662

Other income (expense):
Interest expense	—				(15,213		)		(30,911		)		9,354				(36,770		)

Interest and other income	3,976				5,381				3,609				(9,354		)		3,612

Loss on interest rate swaps	—				—				(335		)		—				(335		)

Income from equity investment	7,521				21,454				—				(28,975		)		—

	11,497				11,622				(27,637		)		(28,975		)		(33,493		)

Income before income tax expense	11,421				4,656				25,067				(28,975		)		12,169

Income tax expense	—				(2		)		(5		)		—				(7		)

Income from continuing operations	11,421				4,654				25,062				(28,975		)		12,162

Discontinued operations:
Operating income from discontinued operations	—				—				237				—				237

Loss on disposition of discontinued operations	—				—				(978		)		—				(978		)

Loss from discontinued operations	—				—				(741		)		—				(741		)

Net income	$	11,421			$	4,654			$	24,321			$	(28,975	)		$	11,421



Consolidating Statements of Operations (in thousands)



	For the six months ended June 30, 2013
	Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
	(Parent)				Property				Guarantors				adjustments				(Consolidated)
	(Guarantor)				Trust OP
					(the Issuer)
Revenues:
Rental income	$	—			$	202			$	204,322			$	(115	)		$	204,409

Tenant reimbursements	—				83				43,427				—				43,510

Hotel income	—				—				11,516				—				11,516

Other property income	—				17				1,316				(79		)		1,254

	—				302				260,581				(194		)		260,689

Expenses:
Property operating costs	—				1,069				73,699				(115		)		74,653

Hotel operating costs	—				—				9,081				—				9,081

Asset and property management fees:
Related-party	4,397				7				313				(24		)		4,693

Other	—				—				1,143				—				1,143

Depreciation	—				561				53,104				—				53,665

Amortization	—				14				39,870				—				39,884

General and administrative	—				37,751				8,080				(55		)		45,776

	4,397				39,402				185,290				(194		)		228,895

Real estate operating income (loss)	(4,397		)		(39,100		)		75,291				—				31,794

Other income (expense):
Interest expense	—				(16,325		)		(45,309		)		9,451				(52,183		)

Interest and other income	3,999				5,455				18,221				(9,451		)		18,224

Gain on interest rate swaps	—				—				221				—				221

Income (loss) from equity investment	(1,609		)		45,011				—				(43,402		)		—

	2,390				34,141				(26,867		)		(43,402		)		(33,738		)

Income (loss) before income tax expense	(2,007		)		(4,959		)		48,424				(43,402		)		(1,944		)

Income tax expense	—				(2		)		(220		)		—				(222		)

Income (loss) from continuing operations	(2,007		)		(4,961		)		48,204				(43,402		)		(2,166		)

Discontinued operations:
Operating income (loss) from discontinued operations	—				658				(10,513		)		—				(9,855		)

Gain on disposition of discontinued operations	—				—				10,014				—				10,014

Income (loss) from discontinued operations	—				658				(499		)		—				159

Net income (loss)	$	(2,007	)		$	(4,303	)		$	47,705			$	(43,402	)		$	(2,007	)

Consolidating Statements of Comprehensive Income	'
	Consolidating Statements of Comprehensive Income (in thousands)


		For the three months ended June 30, 2014
		Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
		(Parent)				Property				Guarantors				adjustments				(Consolidated)
		(Guarantor)				Trust OP
						(the Issuer)
	Net income	$	8,021			$	4,254			$	14,674			$	(18,928	)		$	8,021

	Market value adjustment to interest rate swap	(43		)		(43		)		—				43				(43		)

	Comprehensive income	$	7,978			$	4,211			$	14,674			$	(18,885	)		$	7,978



		For the three months ended June 30, 2013
		Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
		(Parent)				Property				Guarantors				adjustments				(Consolidated)
		(Guarantor)				Trust OP
						(the Issuer)
	Net income	$	20,601			$	16,369			$	28,923			$	(45,292	)		$	20,601

	Market value adjustment to interest rate swap	2,168				2,168				—				(2,168		)		2,168

	Comprehensive income	$	22,769			$	18,537			$	28,923			$	(47,460	)		$	22,769



		For the six months ended June 30, 2014
		Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
		(Parent)				Property				Guarantors				adjustments				(Consolidated)
		(Guarantor)				Trust OP
						(the Issuer)
	Net income	$	11,421			$	4,654			$	24,321			$	(28,975	)		$	11,421

	Market value adjustment to interest rate swap	211				211				—				(211		)		211

	Comprehensive income	$	11,632			$	4,865			$	24,321			$	(29,186	)		$	11,632



		For the six months ended June 30, 2013
		Columbia Property Trust				Columbia				Non-				Consolidating				Columbia Property Trust
		(Parent)				Property				Guarantors				adjustments				(Consolidated)
		(Guarantor)				Trust OP
						(the Issuer)
	Net income (loss)	$	(2,007	)		$	(4,303	)		$	47,705			$	(43,402	)		$	(2,007	)

	Foreign currency translation adjustment	(83		)		—				(83		)		83				(83		)

	Market value adjustment to interest rate swap	2,717				2,717				—				(2,717		)		2,717

	Comprehensive income (loss)	$	627			$	(1,586	)		$	47,622			$	(46,036	)		$	627

Consolidating Statements of Cash Flows	'
	Consolidating Statements of Cash Flows (in thousands)


		For the six months ended June 30, 2014
		Columbia Property Trust				Columbia Property Trust OP				Non-				Eliminations				Columbia Property Trust
		(Parent)				(the Issuer)				Guarantors								(Consolidated)
		(Guarantor)
	Cash flows from operating activities	$	(73	)		$	(19,585	)		$	132,641			$	—			$	112,983

	Cash flows from investing activities:
	Net proceeds from sale of real estate	—				27,131				—				—				27,131

	Investment in real estate and related assets	—				(157,776		)		(30,782		)		—				(188,558		)

	Investments in subsidiaries	(133,515		)		—				—				133,515				—

	Net cash used in investing activities	(133,515		)		(130,645		)		(30,782		)		133,515				(161,427		)

	Cash flows from financing activities:
	Borrowings, net of fees	—				129,807				(605		)		—				129,202

	Repayments of notes payable	—				(55,000		)		(1,300		)		—				(56,300		)

	Distributions	(74,979		)		—				—				—				(74,979		)

	Intercompany contributions (distributions)	179,565				59,837				(105,887		)		(133,515		)		—

	Net cash provided by (used in) financing activities	104,586				134,644				(107,792		)		(133,515		)		(2,077		)

	Net decrease in cash and cash equivalents	(29,002		)		(15,586		)		(5,933		)		—				(50,521		)

	Cash and cash equivalents, beginning of period	53,322				20,708				25,825				—				99,855

	Cash and cash equivalents, end of period	$	24,320			$	5,122			$	19,892			$	—			$	49,334




		For the six months ended June 30, 2013
		Columbia Property Trust				Columbia Property Trust OP				Non-				Columbia Property Trust
		(Parent)				(the Issuer)				Guarantors				(Consolidated)
		(Guarantor)
	Cash flows from operating activities	$	—			$	(41,902	)		$	144,223			$	102,321

	Cash flows from investing activities:
	Net proceeds from sale of real estate	—				65,928				—				65,928

	Investment in real estate and related assets	—				(3,355		)		(28,956		)		(32,311		)

	Net cash provided by (used in) investing activities	—				62,573				(28,956		)		33,617

	Cash flows from financing activities:
	Borrowings, net of fees	—				119,801				(41		)		119,760

	Repayments of line of credit and notes payable	—				(111,000		)		(1,227		)		(112,227		)

	Issuance of common stock, net of redemptions and fees	(32,328		)		—				—				(32,328		)

	Distributions	(103,030		)		—				—				(103,030		)

	Intercompany transfers, net	136,389				(30,808		)		(105,581		)		—

	Net cash provided by (used in) financing activities	1,031				(22,007		)		(106,849		)		(127,825		)

Net increase (decrease) in cash and cash equivalents	1,031				(1,336		)		8,418				8,113

Effect of foreign exchange rate on cash and cash equivalents	—				—				(103		)		(103		)

Cash and cash equivalents, beginning of period	20,914				4,822				27,921				53,657

Cash and cash equivalents, end of period	$	21,945			$	3,486			$	36,236			$	61,667

Organization_Details

Organization (Details)	Jun. 30, 2014
	sqft
	States
	Buildings
Real Estate	'
Number of operational buildings	58
Square feet of real estate	16,800,000
Number of states with properties	12
Percent of leased office space of owned properties	93.50%
Office Building	'
Real Estate	'
Number of real estate properties	37
Hotel	'
Real Estate	'
Number of real estate properties	1
Wholly Owned Properties	'
Real Estate	'
Number of real estate properties	36

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Narratives) (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Mar. 31, 2013

Sep. 30, 2013

Dec. 31, 2013

Mar. 31, 2013

Jun. 04, 2014

Mar. 31, 2014

Jun. 30, 2014

Building

Site Improvements

Below-Market Lease Assets

Minimum

Maximum

18 Property Sale

120 Eagle Rock

333 & 777 Republic Drive

180 Park Avenue 103

200 South Orange Building

Building Improvements

Properties

Fair Value, Inputs, Level 2

Fair Value, Inputs, Level 1

Significant Accounting Policies [Line Items]

Number of properties subject to be sold

Estimated useful life of real estate assets (in years)

'40 years

'15 years

'5 years

'25 years

Fair value determined by net contract price

$500,000,000

$18,400,000

Impairment loss on real estate assets

1,432,000

14,982,000

12,900,000

11,700,000

5,200,000

13,600,000

1,400,000

Net proceeds from the sale of real estate

10,200,000

Gross intangible assets

110,700,000

Amortization of intangible assets

37,542,000

43,100,000

500,000

1,000,000

Fair value of interest rate swaps

($8,400,000)

($10,900,000)

Requirement to distribute taxable income (percent)

90.00%

Limit on investments in taxable real estate investment trusts (percent)

25.00%

Summary_of_Significant_Account4

Summary of Significant Accounting Policies (Schedule of Recognized Fair Value Adjustments) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Impairment losses on real estate assets	($1,432)	$0	($14,982)	$0
120 Eagle Rock \| Fair Value, Inputs, Level 3	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Net Book Value	'	23,808	'	23,808
Impairment losses on real estate assets	'	-11,708	'	-11,708
Fair Value	'	12,100	'	12,100
333 & 777 Republic Drive \| Fair Value, Inputs, Level 3	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Net Book Value	'	13,359	'	13,359
Impairment losses on real estate assets	'	-5,159	'	-5,159
Fair Value	'	$8,200	'	$8,200

Summary_of_Significant_Account5

Summary of Significant Accounting Policies (Schedule of Intangible Assets & Liabilities) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]	'	'
Intangible Lease Assets, Accumulated Amortization	($308,341)	($298,975)
Intangible lease assets, net	269,821	281,220
Intangible Lease Origination Costs, Accumulated Amortization	-221,615	-216,598
Intangible Lease Origination Costs, Net	133,778	148,889
Below Market Lease, Gross	159,629	150,364
Below Market Lease, Accumulated Amortization	-82,664	-76,500
Below Market Lease, Net	76,965	73,864
Above-Market In-Place Lease Assets	'	'
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]	'	'
Intangible Lease Assets, Gross	79,982	80,836
Intangible Lease Assets, Accumulated Amortization	-59,032	-56,859
Intangible lease assets, net	20,950	23,977
Absorption Period Costs	'	'
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]	'	'
Intangible Lease Assets, Gross	395,819	388,686
Intangible Lease Assets, Accumulated Amortization	-241,922	-229,065
Intangible lease assets, net	153,897	159,621
Intangible Lease Origination Costs	'	'
Gross Intangible In-Place Lease Assets and Liabilities [Abstract]	'	'
Intangible Lease Origination Costs, Gross	360,660	365,487
Intangible Lease Origination Costs, Accumulated Amortization	-225,859	-216,598
Intangible Lease Origination Costs, Net	$134,801	$148,889

Summary_of_Significant_Account6

Summary of Significant Accounting Policies (Schedule of Recognized Amortization) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Amortization of Below Market Lease	$3,778	$3,705	$6,859	$7,431
Above-Market In-Place Lease Assets	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Amortization of Intangible Assets	1,350	1,453	2,706	3,138
Absorption Period Costs	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Amortization of Intangible Assets	9,178	9,919	17,251	20,054
Intangible Lease Origination Costs	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Amortization of Intangible Assets	$8,440	$10,017	$16,873	$19,941

Summary_of_Significant_Account7

Summary of Significant Accounting Policies (Schedule of Future Amortization by Intangible Asset Class) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets, Net [Abstract]	'	'
Intangible lease assets, net	$269,821	$281,220
Intangible Lease Origination Costs, Net	133,778	148,889
Below Market Lease [Abstract]	'	'
For the six months ended December 31, 2014	7,870	'
2015	13,302	'
2016	10,091	'
2017	7,684	'
2018	6,730	'
2019	6,074	'
Thereafter	25,214	'
Below Market Lease, Net	76,965	73,864
Above-Market In-Place Lease Assets	'	'
Finite-Lived Intangible Assets, Net [Abstract]	'	'
For the six months ended December 31, 2014	2,665	'
2015	4,492	'
2016	3,760	'
2017	1,891	'
2018	1,087	'
2019	1,047	'
Thereafter	6,008	'
Intangible lease assets, net	20,950	23,977
Absorption Period Costs	'	'
Finite-Lived Intangible Assets, Net [Abstract]	'	'
For the six months ended December 31, 2014	18,353	'
2015	31,302	'
2016	23,430	'
2017	17,208	'
2018	13,297	'
2019	12,261	'
Thereafter	38,046	'
Intangible lease assets, net	153,897	159,621
Intangible Lease Origination Costs	'	'
Finite-Lived Intangible Assets, Net [Abstract]	'	'
For the six months ended December 31, 2014	16,645	'
2015	29,937	'
2016	22,897	'
2017	16,342	'
2018	11,834	'
2019	10,681	'
Thereafter	26,465	'
Intangible Lease Origination Costs, Net	$134,801	$148,889

Summary_of_Significant_Account8

Summary of Significant Accounting Policies (Schedule of Future Amortization for Below-Market Lease Assets) (Details) (Below-Market Lease Assets, USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified	Jun. 30, 2014
Below-Market Lease Assets	'
For the years ending December 31:	'
For the six months ended December 31, 2014	$1,036
2015	2,069
2016	2,069
2017	2,069
2018	2,069
2019	2,069
Thereafter	85,207
Future amortization expense	$96,588

Summary_of_Significant_Account9

Summary of Significant Accounting Policies (Interest Rate Swaps) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013
					Interest Rate Contract	Interest Rate Contract
					Accounts Payable	Accounts Payable
Derivative, Fair Value, Net [Abstract]	'	'	'	'	'	'
Derivative designated as hedging instruments	'	'	'	'	($3,096)	($3,307)
Derivatives not designated as hedging instruments	'	'	'	'	-5,255	-7,579
Summary of Derivative Instruments Impact on Results of Operations [Abstract]	'	'	'	'	'	'
Market value adjustment to interest rate swap designated as a hedge instrument included in other comprehensive income	-43	2,168	211	2,717	'	'
Gain (loss) on interest rate swap recognized through earnings	'	'	($335)	$221	'	'

Real_Estate_and_Other_Transact2

Real Estate and Other Transactions (Acquisitions) (Details) (USD $)

3 Months Ended

6 Months Ended

2 Months Ended

3 Months Ended

6 Months Ended

0 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Apr. 22, 2014

sqft

221 Main Street Building

Intangible Lease Assets

Intangible Lease Origination Costs

Customer Concentration Risk

Office Building

JPMorgan

Tenant

221 Main Street Building

DocuSign, Inc

221 Main Street Building

sqft

Business Acquisition [Line Items]

Land

$60,509,000

[1]

Buildings and Improvements

161,853,000

[1]

Intangible Lease Assets

12,776,000

[1]

3,475,000

[1]

Intangible Below- Market Lease Liability

-10,323,000

[1]

Total Purchase Price

228,290,000

[1]

Percent of leased office space of owned properties

93.50%

82.80%

Number of Customers

Concentration risk percentage

15.70%

Square feet of real estate

16,800,000

388,000

Payments to Acquire Real Estate

228,800,000

Business Combination, Consideration Transferred, Liabilities Incurred

73,000,000

Proceeds from Lines of Credit

116,000,000

Business Acquisition, Pro Forma Information [Abstract]

Revenue recognized since acquisition date

3,400,000

Net loss recognized since acquisition date

7,500,000

Acquisition expenses

6,102,000

6,100,000

Revenues

137,482,000

134,708,000

269,863,000

266,414,000

Net loss attributable to common stockholders

$14,241,000

$20,113,000

$18,014,000

($8,904,000)

Net income (loss) per share - basic

$0.11

$0.15

$0.14

($0.07)

Net income (loss) per share - diluted

$0.11

$0.15

$0.14

($0.07)

[1]

As of the acquisition date, the 221 Main Street Building was 82.8% leased to 40 tenants, including DocuSign, Inc. (15.7%). No other tenants lease more than 10% of the building, based on annualized lease revenue.

Real_Estate_and_Other_Transact3

Real Estate and Other Transactions (Dispositions) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 04, 2014	Mar. 31, 2014	Jun. 30, 2014	Mar. 21, 2013	Jul. 01, 2014
					180 Park Avenue 103	180 Park Avenue 103	200 South Orange Building	Dvintsev Business Center - Tower B	Subsequent Event
								Landlink Ltd	7031 Columbia Gateway Drive
Significant Acquisitions and Disposals [Line Items]	'	'	'	'	'	'	'	'	'
Ownership percentage of real estate	'	'	'	'	'	'	'	100.00%	'
Net proceeds from the sale of real estate	'	'	'	'	$10,200,000	'	'	$67,500,000	$59,500,000
Gain (loss) on sale of real estate assets	'	'	'	'	'	'	'	'	7,800,000
Impairment loss on real estate assets	1,432,000	0	14,982,000	0	'	13,600,000	1,400,000	'	'
Proceeds from sale of real estate net of transaction costs	'	'	'	'	'	'	18,400,000	'	'
Gain (loss) on disposition of discontinued operations	($650,000)	$0	($978,000)	$10,014,000	'	'	'	$10,000,000	'

Real_Estate_and_Other_Transact4

Real Estate and Other Transactions (Other Transactions) (Details) (Columbia Property Trust Advisory Services, LLC and Columbia Property Trust Services, LLC, USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013
Columbia Property Trust Advisory Services, LLC and Columbia Property Trust Services, LLC	'
Business Acquisition [Line Items]	'
Revenues	$261,848
Net loss attributable to common stockholders	$31,770

Line_of_Credit_and_Notes_Payab2

Line of Credit and Notes Payable (Schedule of Long-Term Debt (excluding Bonds Payable)) (Details) (USD $)	Jun. 30, 2014	Apr. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Apr. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'	'
Total indebtedness	$1,386,644	'	$1,240,249
Term Loans \| $450 Million Term Loan	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	450,000	'	450,000
Mortgage Notes \| Market Square Buildings mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	325,000	'	325,000
Mortgage Notes \| 333 Market Street Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	207,187	'	207,559
Mortgage Notes \| 100 East Pratt Street Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	105,000	'	105,000
Mortgage Notes \| 221 Main Street Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	73,000	73,000	0
Mortgage Notes \| 263 Shuman Boulevard Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	49,000	'	49,000
Mortgage Notes \| SanTan Corporate Center mortgage notes	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	39,000	'	39,000
Mortgage Notes \| One Glenlake Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	33,413	'	34,713
Mortgage Notes \| 215 Diehl Road Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	21,000	'	21,000
Mortgage Notes \| 544 Lakeview Building mortgage note	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	9,044	'	8,977
Credit Facilities \| JPMorgan Chase Credit Facility	'	'	'
Debt Instrument [Line Items]	'	'	'
Total indebtedness	$75,000	'	$0

Line_of_Credit_and_Notes_Payab3

Line of Credit and Notes Payable (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2014	Apr. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
			$450 Million Term Loan Amended	Mortgage Notes	Mortgage Notes	Mortgage Notes	Loans Payable	Loans Payable	Loans Payable
				221 Main Street Building mortgage note	221 Main Street Building mortgage note	221 Main Street Building mortgage note
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'	'
Line of credit and notes payable	$1,386,644,000	$1,240,249,000	'	$73,000,000	$73,000,000	$0	'	'	'
Interest rate for debt instrument (percent)	'	'	'	3.95%	'	'	'	'	'
Estimated fair value of line of credit and notes payable	'	'	'	'	'	'	1,406,500,000	'	1,245,300,000
Interest payments	'	'	'	'	'	'	27,200,000	30,400,000	'
Interest capitalized	'	'	'	'	'	'	0	0	'
Debt face amount	'	'	$450,000,000	'	'	'	'	'	'

Bonds_Payable_Narratives_Detai

Bonds Payable (Narratives) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2011	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2011	Jun. 30, 2014	Dec. 31, 2013
			Bonds Payable	Bonds Payable	Bonds Payable	Bonds Payable	Fair Value, Inputs, Level 2	Fair Value, Inputs, Level 2
				2018 Bonds Payable	2018 Bonds Payable	2018 Bonds Payable	Bonds Payable	Bonds Payable
							2018 Bonds Payable	2018 Bonds Payable
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Face amount of issued debt instrument	'	'	'	'	'	$250,000,000	'	'
Maturity period of debt instrument (in years)	'	'	'7 years	'	'	'	'	'
Interest rate for debt instrument (percent)	'	'	'	'	'	5.88%	'	'
Discount rate of face value of issued debt instrument (in percent)	'	'	'	'	'	99.30%	'	'
Net proceeds received from issuance of bonds payable	'	'	'	'	'	246,700,000	'	'
Frequency of interest payments	'	'	'	'	'	'semi-annual	'	'
Initial issuance discount of bonds payable	944,000	1,070,000	'	'	'	1,800,000	'	'
Maturity date	'	'	'	1-Apr-18	'	'	'	'
Interest payments	'	'	'	7,300,000	7,300,000	'	'	'
Estimated fair value of debt instrument	'	'	'	'	'	'	$250,800,000	$250,800,000

Stockholders_Equity_Details

Stockholder's Equity (Details) (USD $)

0 Months Ended

6 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Aug. 14, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jan. 21, 2014

Jun. 30, 2014

Aug. 21, 2013

Jun. 30, 2014

Jul. 02, 2014

Jun. 30, 2014

2013 Long Term Incentive Plan

Director

Employees

Grant Date

31-Jan-15

31-Jan-16

31-Jan-17

Subsequent Event

Minimum

Maximum

2013 Long Term Incentive Plan

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

Share authorized

2,000,000

Shares of common stock granted to employees

143,740

144,000

Shares withheld to settle tax liability

12,752

Percent vested upon grant (percent)

25.00%

Stock-based compensation expense

$1,023,000

$500,000

$1,000,000

$100,000

$200,000

$400,000

Stock-based compensation expense related to future employee awards

200,000

400,000

Award vesting rights (in percent)

25.00%

Unrecognized compensation costs related to unvested awards

$2,100,000

Unrecognized compensation costs recognition period (years)

'1 year

'3 years

Stock split ratio

0.25

Common stock, shares authorized

900,000,000

225,000,000

Stockholders_Equity_Unvested_A

Stockholder's Equity (Unvested Activity Rollforward) (Details) (2013 Long Term Incentive Plan, USD $)	0 Months Ended	6 Months Ended
	Jan. 21, 2014	Jun. 30, 2014
2013 Long Term Incentive Plan	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Shares expected to ultimately vest	'	101,000
Expected forfeiture rate	'	5.00%
Shares Rollforward	'	'
Unvested shares as of	'	0
Granted	143,740	144,000
Vested	'	-36,000
Forfeited	'	-1,000
Unvested shares as of	'	107,000	[1]
Weighted-Average, Grant-Date Fair Value Rollforward	'	'
Unvested shares as of	'	$0	[2]
Granted	'	$24.82	[2]
Vested	'	$24.82	[2]
Forfeited	'	$24.82	[2]
Unvested shares as of	'	$24.82	[2]

[1]	As of JuneB 30, 2014, we expect approximately 101,000 of the 107,000 unvested shares to ultimately vest, assuming a forfeiture rate of 5.0%, which was determined based on peer company data, adjusted for the specifics of the 2013 Long-Term Incentive Plan.
[2]	Columbia Property Trust determined the weighted-average, grant-date fair value using the market closing price on the date of the grant.

Stockholders_Equity_Summary_of

Stockholder's Equity (Summary of Shares Granted to Independent Directors) (Details) (2013 Long Term Incentive Plan, USD $)	0 Months Ended	6 Months Ended		0 Months Ended
	Jan. 21, 2014	Jun. 30, 2014		Jan. 21, 2014	Apr. 02, 2014	Jul. 01, 2014
				Director	Director	Subsequent Event
				21-Jan-14	1-Apr-14	Director
						1-Jul-14
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'		'	'	'
Shares of common stock granted to employees	143,740	144,000		3,344	2,968	3,016
Weighted average grant date fair value of shares granted	'	$24.82	[1]	$24.82	$27.22	$25.78

[1]	Columbia Property Trust determined the weighted-average, grant-date fair value using the market closing price on the date of the grant.

Supplemental_Disclosures_of_No2

Supplemental Disclosures of Noncash Investing and Financing Activities (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Investment in real estate funded with other assets	$3,807	$0
Other assets assumed at acquisition	501	741
Other liabilities assumed at acquisition	589	741
Other liabilities settled at disposition	0	872
Note payable assumed at acquisition	73,000	0
Interest accruing to notes payable	0	159
Amortization of premiums (discounts) on debt	178	304
Market value adjustment to interest rate swaps that qualify for hedge accounting treatment	211	2,717
Accrued capital expenditures and deferred lease costs	18,431	13,408
Accrued deferred financing costs	31	0
Accrued redemptions of common stock	0	2,079
Common stock issued to employees and directors, and amortized (net of amounts withheld for income taxes)	708	0
Increase in redeemable common stock	$0	$22,226

RelatedParty_Transactions_and_2

Related-Party Transactions and Agreements (Narratives) (Details) (Transitional Services Agreement, WREF, USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Transitional Services Agreement \| WREF	'
Related Party Transaction [Line Items]	'
Amount payable under agreement with related party	$8.80

RelatedParty_Transactions_and_3

Related-Party Transactions and Agreements (Schedule of Related-Party Costs) (Details) (USD $)	3 Months Ended						6 Months Ended
	Jun. 30, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	$0		'	'	$368,000		$0		$39,241,000
Tenant reimbursements	22,934,000		'	'	21,266,000		46,667,000		43,510,000
Consulting Fees	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0	[1]	'	'	0	[1]	0	[1]	25,417,000	[1]
Payment for related party costs	'		'	'	'		'		10,200,000
Related party transaction, due in remainder of fiscal year	'		'	15,200,000	'		'		'
Transition Services	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0	[2]	'	'	0	[2]	0	[2]	5,750,000	[2]
Payment for related party costs	'		'	1,500,000	'		'		3,000,000
Related party transition services fees due in fourth quarter	'		1,300,000	'	'		'		'
Asset Management Fees	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0		'	'	0		0		5,083,000
Administrative Reimbursements, Net	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0	[3]	'	'	70,000	[3]	0	[3]	1,891,000	[3]
Tenant reimbursements	'		'	'	700,000	[2]	'		'
Property Management Fees	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0		'	'	0		0		523,000
Construction Fees	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0	[4]	'	'	0	[4]	0	[4]	139,000	[4]
Investor Services	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	0		'	'	278,000		0		369,000
Other	'		'	'	'		'		'
Related Party Transaction [Line Items]	'		'	'	'		'		'
Total related-party costs	$0		'	'	$20,000		$0		$69,000

[1]	$10.2 million of the $25.4 million of consulting fees incurred were paid during the six months ended JuneB 30, 2013. The remaining $15.2 million was paid ratably over the remainder of 2013.
[2]	$3.0 million of the $5.8 million of transition services fees incurred were paid during the six months ended JuneB 30, 2013; $1.5 million was paid in the third quarter of 2013; and the remaining $1.3 million was paid in the fourth quarter of 2013.
[3]	Administrative reimbursements are presented net of reimbursements from tenants of approximately $0.7 million for the six months ended JuneB 30, 2013.
[4]	Construction fees are capitalized to real estate assets as incurred.

Held_for_Sale_and_Discontinued2

Held for Sale and Discontinued Operations (Narratives) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	1 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Nov. 05, 2013	Mar. 21, 2013
					18 Property Sale	Dvintsev Business Center - Tower B
						Landlink Ltd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'
Net proceeds from the sale of real estate	'	'	'	'	'	$67,500,000
Gain (loss) on disposition of discontinued operations	-650,000	0	-978,000	10,014,000	'	10,000,000
Net proceeds from the sale of real estate	'	'	27,131,000	65,928,000	521,500,000	'
Gain on extinguishment of debt	'	'	'	'	$200,000	'

Held_for_Sale_and_Discontinued3

Held for Sale and Discontinued Operations (Schedule of Assets and Liabilities Held for Sale) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Disposal Group, Including Discontinued Operation, Assets [Abstract]	'	'
Total real estate assets held for sale, net	$49,809	$0
Total other assets held for sale, net	1,539	0
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]	'	'
Total liabilities held for sale, net	1,327	0
7031 Columbia Gateway Drive	'	'
Disposal Group, Including Discontinued Operation, Assets [Abstract]	'	'
Land	10,232	'
Buildings and improvements, less accumulated depreciation of $7,829	37,963	'
Intangible lease assets, less accumulated amortization of $6,698	1,614	'
Total real estate assets held for sale, net	49,809	'
Tenant receivables	403	'
Prepaid expenses and other assets	26	'
Total other assets held for sale, net	1,539	'
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]	'	'
Accounts payable, accrued expenses, and accrued capital expenditures	85	'
Deferred income	346	'
Intangible lease liabilities, less accumulated amortization of $3,719	896	'
Total liabilities held for sale, net	1,327	'
Intangible Lease Origination Costs \| 7031 Columbia Gateway Drive	'	'
Disposal Group, Including Discontinued Operation, Assets [Abstract]	'	'
Intangible lease assets, less accumulated amortization of $6,698	1,023	'
Deferred Leasing Costs [Member] \| 7031 Columbia Gateway Drive	'	'
Disposal Group, Including Discontinued Operation, Assets [Abstract]	'	'
Intangible lease assets, less accumulated amortization of $6,698	$87	'

Held_for_Sale_and_Discontinued4

Held for Sale and Discontinued Operations (Schedule of Assets and Liabilities Held for Sale - Parenthetical) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'
Buildings and improvements - accumulated depreciation	$641,687	$604,497
Intangible lease assets - accumulated amortization	308,341	298,975
Intangible lease liabilities - accumulated amortization	3,719	0
7031 Columbia Gateway Drive	'	'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'
Buildings and improvements - accumulated depreciation	7,829	'
Intangible lease assets - accumulated amortization	6,698	'
Intangible lease origination costs - accumulated amortization	4,244	'
Deferred lease costs - accumulated amortization	52	'
Intangible lease liabilities - accumulated amortization	$3,719	'

Held_for_Sale_and_Discontinued5

Held for Sale and Discontinued Operations (Schedule of Revenue and Expenses from Discontinued Operations) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:	'	'	'	'
Rental income	$1	$13,848	$4	$28,970
Tenant reimbursements	151	3,192	100	6,557
Other property income	0	292	0	292
Revenues	152	17,332	104	35,819
Expenses:	'	'	'	'
Property operating costs	82	6,068	-265	12,373
Asset and property management fees	0	150	7	1,308
Depreciation	0	3,653	0	7,570
Amortization	0	2,345	0	4,390
Impairment loss on real estate assets	0	0	0	16,867
General and administrative	110	37	128	1,072
Total expenses	192	12,253	-130	43,580
Operating income (loss)	-40	5,079	234	-7,761
Other income (expense):	'	'	'	'
Interest expense	0	-1,126	0	-2,252
Interest and other income	0	161	3	164
Nonoperating income (expense)	0	-965	3	-2,088
Income (loss) from discontinued operations before income tax expense	-40	4,114	237	-9,849
Income tax expense	0	-2	0	-6
Income (loss) from discontinued operations	-40	4,112	237	-9,855
Gain (loss) on disposition of discontinued operations	-650	0	-978	10,014
Income (loss) from discontinued operations	($690)	$4,112	($741)	$159

Earnings_Per_Share_Basic_and_D

Earnings Per Share (Basic and Diluted EPS Computations) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Net income (loss)	$8,021	$20,601	$11,421	($2,007)
Distributions paid on unvested shares	-32	0	-64	0
Net income (loss) used to calculate basic and diluted earnings per share	$7,989	$20,601	$11,357	($2,007)
Weighted-average common shares - basic	124,860	135,816	124,855	136,166
Weighted-average common shares - diluted	124,919	135,816	124,901	136,166
2013 Long Term Incentive Plan	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Plus incremental weighted-average shares from time-vested conversions less assumed share repurchases:	27	0	25	0
2014 Long Term Incentive Plan	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Plus incremental weighted-average shares from time-vested conversions less assumed share repurchases:	32	0	21	0

Financial_Information_for_Pare2

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Narratives) (Details) (USD $)	Jun. 30, 2014
Guarantor Obligations [Line Items]	'
Ownership percentage of wholly owned subsidiary	100.00%
$450 Million Term Loan \| Term Loans	'
Guarantor Obligations [Line Items]	'
Debt face amount	450,000,000

Financial_Information_for_Pare3

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Condensed Consolidating Balance Sheets) (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Assets:	'	'	'	'
Land	$749,068	$706,938	'	'
Buildings and improvements, net	3,020,793	2,976,287	'	'
Intangible lease assets, net	269,821	281,220	'	'
Construction in progress	18,943	7,949	'	'
Real estate assets held for sale, less accumulated depreciation and amortization of $14,527, as of June 30, 2014	49,809	0	'	'
Total real estate assets	4,108,434	3,972,394	'	'
Cash and cash equivalents	49,334	99,855	61,667	53,657
Investment in subsidiaries	0	0	'	'
Tenant receivables, net of allowance	7,154	7,414	'	'
Straight line rent receivable	117,991	113,592	'	'
Prepaid expenses and other assets	27,974	32,423	'	'
Deferred financing costs, net	9,527	10,388	'	'
Intangible lease origination costs, net	133,778	148,889	'	'
Deferred lease costs, net	105,640	87,527	'	'
Investment in development authority bonds	120,000	120,000	'	'
Total other assets held for sale, net	1,539	0	'	'
Total assets	4,681,371	4,592,482	'	'
Liabilities:	'	'	'	'
Line of credit and notes payable	1,386,644	1,240,249	'	'
Bonds payable, net	249,056	248,930	'	'
Accounts payable, accrued expenses, and accrued capital expenditures	98,737	99,678	'	'
Due to affiliates	0	0	'	'
Deferred income	24,353	21,938	'	'
Intangible lease liabilities, net	76,069	73,864	'	'
Obligations under capital leases	120,000	120,000	'	'
Liabilities held for sale, net	1,327	0	'	'
Total liabilities	1,956,186	1,804,659	'	'
Equity:	'	'	'	'
Total equity	2,725,185	2,787,823	3,008,593	3,163,980
Total liabilities and equity	4,681,371	4,592,482	'	'
Columbia Property Trust (Parent) (Guarantor)	'	'	'	'
Assets:	'	'	'	'
Cash and cash equivalents	'	'	21,945	20,914
Columbia Property Trust OP (the Issuer)	'	'	'	'
Assets:	'	'	'	'
Cash and cash equivalents	'	'	3,486	4,822
Non- Guarantors	'	'	'	'
Assets:	'	'	'	'
Cash and cash equivalents	'	'	36,236	27,921
Reportable Legal Entities \| Columbia Property Trust (Parent) (Guarantor)	'	'	'	'
Assets:	'	'	'	'
Land	0	0	'	'
Buildings and improvements, net	0	0	'	'
Intangible lease assets, net	0	0	'	'
Construction in progress	0	0	'	'
Real estate assets held for sale, less accumulated depreciation and amortization of $14,527, as of June 30, 2014	0	'	'	'
Total real estate assets	0	0	'	'
Cash and cash equivalents	24,320	53,322	'	'
Investment in subsidiaries	2,523,593	2,557,347	'	'
Tenant receivables, net of allowance	0	0	'	'
Straight line rent receivable	0	0	'	'
Prepaid expenses and other assets	177,272	177,185	'	'
Deferred financing costs, net	0	0	'	'
Intangible lease origination costs, net	0	0	'	'
Deferred lease costs, net	0	0	'	'
Investment in development authority bonds	0	0	'	'
Total other assets held for sale, net	0	'	'	'
Total assets	2,725,185	2,787,854	'	'
Liabilities:	'	'	'	'
Line of credit and notes payable	0	0	'	'
Bonds payable, net	0	0	'	'
Accounts payable, accrued expenses, and accrued capital expenditures	0	31	'	'
Due to affiliates	0	0	'	'
Deferred income	0	0	'	'
Intangible lease liabilities, net	0	0	'	'
Obligations under capital leases	0	0	'	'
Liabilities held for sale, net	0	'	'	'
Total liabilities	0	31	'	'
Equity:	'	'	'	'
Total equity	2,725,185	2,787,823	'	'
Total liabilities and equity	2,725,185	2,787,854	'	'
Reportable Legal Entities \| Columbia Property Trust OP (the Issuer)	'	'	'	'
Assets:	'	'	'	'
Land	6,241	6,241	'	'
Buildings and improvements, net	23,903	24,185	'	'
Intangible lease assets, net	0	0	'	'
Construction in progress	2,074	28	'	'
Real estate assets held for sale, less accumulated depreciation and amortization of $14,527, as of June 30, 2014	0	'	'	'
Total real estate assets	32,218	30,454	'	'
Cash and cash equivalents	5,122	20,708	'	'
Investment in subsidiaries	2,263,021	2,286,982	'	'
Tenant receivables, net of allowance	220	0	'	'
Straight line rent receivable	31	22	'	'
Prepaid expenses and other assets	148,845	150,806	'	'
Deferred financing costs, net	7,505	8,762	'	'
Intangible lease origination costs, net	0	0	'	'
Deferred lease costs, net	1,835	1,495	'	'
Investment in development authority bonds	0	0	'	'
Total other assets held for sale, net	0	'	'	'
Total assets	2,458,797	2,499,229	'	'
Liabilities:	'	'	'	'
Line of credit and notes payable	525,000	450,000	'	'
Bonds payable, net	249,056	248,930	'	'
Accounts payable, accrued expenses, and accrued capital expenditures	11,155	11,816	'	'
Due to affiliates	18	-925	'	'
Deferred income	184	146	'	'
Intangible lease liabilities, net	0	0	'	'
Obligations under capital leases	0	0	'	'
Liabilities held for sale, net	0	'	'	'
Total liabilities	785,413	709,967	'	'
Equity:	'	'	'	'
Total equity	1,673,384	1,789,262	'	'
Total liabilities and equity	2,458,797	2,499,229	'	'
Reportable Legal Entities \| Non- Guarantors	'	'	'	'
Assets:	'	'	'	'
Land	742,827	700,697	'	'
Buildings and improvements, net	2,996,890	2,952,102	'	'
Intangible lease assets, net	269,821	281,220	'	'
Construction in progress	16,869	7,921	'	'
Real estate assets held for sale, less accumulated depreciation and amortization of $14,527, as of June 30, 2014	49,809	'	'	'
Total real estate assets	4,076,216	3,941,940	'	'
Cash and cash equivalents	19,892	25,825	'	'
Investment in subsidiaries	0	0	'	'
Tenant receivables, net of allowance	6,934	7,414	'	'
Straight line rent receivable	117,960	113,570	'	'
Prepaid expenses and other assets	23,030	26,602	'	'
Deferred financing costs, net	2,022	1,626	'	'
Intangible lease origination costs, net	133,778	148,889	'	'
Deferred lease costs, net	103,805	86,032	'	'
Investment in development authority bonds	120,000	120,000	'	'
Total other assets held for sale, net	1,539	'	'	'
Total assets	4,605,176	4,471,898	'	'
Liabilities:	'	'	'	'
Line of credit and notes payable	1,181,232	1,110,838	'	'
Bonds payable, net	0	0	'	'
Accounts payable, accrued expenses, and accrued capital expenditures	87,582	87,831	'	'
Due to affiliates	1,567	2,506	'	'
Deferred income	24,169	21,792	'	'
Intangible lease liabilities, net	76,069	73,864	'	'
Obligations under capital leases	120,000	120,000	'	'
Liabilities held for sale, net	1,327	'	'	'
Total liabilities	1,491,946	1,416,831	'	'
Equity:	'	'	'	'
Total equity	3,113,230	3,055,067	'	'
Total liabilities and equity	4,605,176	4,471,898	'	'
Consolidating adjustments	'	'	'	'
Assets:	'	'	'	'
Land	0	0	'	'
Buildings and improvements, net	0	0	'	'
Intangible lease assets, net	0	0	'	'
Construction in progress	0	0	'	'
Real estate assets held for sale, less accumulated depreciation and amortization of $14,527, as of June 30, 2014	0	'	'	'
Total real estate assets	0	0	'	'
Cash and cash equivalents	0	0	'	'
Investment in subsidiaries	-4,786,614	-4,844,329	'	'
Tenant receivables, net of allowance	0	0	'	'
Straight line rent receivable	0	0	'	'
Prepaid expenses and other assets	-321,173	-322,170	'	'
Deferred financing costs, net	0	0	'	'
Intangible lease origination costs, net	0	0	'	'
Deferred lease costs, net	0	0	'	'
Investment in development authority bonds	0	0	'	'
Total other assets held for sale, net	0	'	'	'
Total assets	-5,107,787	-5,166,499	'	'
Liabilities:	'	'	'	'
Line of credit and notes payable	-319,588	-320,589	'	'
Bonds payable, net	0	0	'	'
Accounts payable, accrued expenses, and accrued capital expenditures	0	0	'	'
Due to affiliates	-1,585	-1,581	'	'
Deferred income	0	0	'	'
Intangible lease liabilities, net	0	0	'	'
Obligations under capital leases	0	0	'	'
Liabilities held for sale, net	0	'	'	'
Total liabilities	-321,173	-322,170	'	'
Equity:	'	'	'	'
Total equity	-4,786,614	-4,844,329	'	'
Total liabilities and equity	($5,107,787)	($5,166,499)	'	'

Financial_Information_for_Pare4

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Consolidating Statements of Operations) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:	'	'	'	'
Rental income	$103,821	$103,103	$204,388	$204,409
Tenant reimbursements	22,934	21,266	46,667	43,510
Hotel income	6,505	6,562	10,566	11,516
Other property income	3,497	966	4,304	1,254
Revenues	136,757	131,897	265,925	260,689
Expenses:	'	'	'	'
Property operating costs	38,832	37,069	77,812	74,653
Hotel operating costs	4,689	4,820	8,830	9,081
Related-party	0	0	0	4,693
Other	675	530	964	1,143
Depreciation	30,169	26,955	57,473	53,665
Amortization	20,221	19,982	38,742	39,884
Impairment loss on real estate assets	1,432	0	14,982	0
General and administrative	8,412	8,957	15,358	45,776
Acquisition expenses	6,102	0	6,102	0
Costs and expenses	110,532	98,313	220,263	228,895
Real estate operating income	26,225	33,584	45,662	31,794
Other income (expense):	'	'	'	'
Interest expense	-18,860	-26,049	-36,770	-52,183
Interest and other income	1,802	9,113	3,612	18,224
Gain (loss) on interest rate swaps	-105	164	-335	221
Income from equity investment	0	0	0	0
Nonoperating income (expense)	-17,163	-16,772	-33,493	-33,738
Income (loss) before income tax expense	9,062	16,812	12,169	-1,944
Income tax benefit (expense)	-351	-323	-7	-222
Income (loss) from continuing operations	8,711	16,489	12,162	-2,166
Discontinued operations:	'	'	'	'
Operating loss from discontinued operations	-40	4,112	237	-9,855
Gain (loss) on disposition of discontinued operations	-650	0	-978	10,014
Income (loss) from discontinued operations	-690	4,112	-741	159
Net income (loss)	8,021	20,601	11,421	-2,007
Reportable Legal Entities \| Columbia Property Trust (Parent) (Guarantor)	'	'	'	'
Revenues:	'	'	'	'
Rental income	0	0	0	0
Tenant reimbursements	0	0	0	0
Hotel income	0	0	0	0
Other property income	0	0	0	0
Revenues	0	0	0	0
Expenses:	'	'	'	'
Property operating costs	0	0	0	0
Hotel operating costs	0	0	0	0
Related-party	0	0	0	4,397
Other	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Impairment loss on real estate assets	0	'	0	'
General and administrative	47	0	76	0
Acquisition expenses	0	'	0	'
Costs and expenses	47	0	76	4,397
Real estate operating income	-47	0	-76	-4,397
Other income (expense):	'	'	'	'
Interest expense	0	0	0	0
Interest and other income	1,988	2,002	3,976	3,999
Gain (loss) on interest rate swaps	0	0	0	0
Income from equity investment	6,080	18,599	7,521	-1,609
Nonoperating income (expense)	8,068	20,601	11,497	2,390
Income (loss) before income tax expense	8,021	20,601	11,421	-2,007
Income tax benefit (expense)	0	0	0	0
Income (loss) from continuing operations	8,021	20,601	11,421	-2,007
Discontinued operations:	'	'	'	'
Operating loss from discontinued operations	0	0	0	0
Gain (loss) on disposition of discontinued operations	0	'	0	0
Income (loss) from discontinued operations	0	0	0	0
Net income (loss)	8,021	20,601	11,421	-2,007
Reportable Legal Entities \| Columbia Property Trust OP (the Issuer)	'	'	'	'
Revenues:	'	'	'	'
Rental income	110	101	219	202
Tenant reimbursements	43	-20	89	83
Hotel income	0	0	0	0
Other property income	0	0	0	17
Revenues	153	81	308	302
Expenses:	'	'	'	'
Property operating costs	634	594	1,244	1,069
Hotel operating costs	0	0	0	0
Related-party	4	4	8	7
Other	0	0	0	0
Depreciation	405	328	786	561
Amortization	13	7	22	14
Impairment loss on real estate assets	0	'	0	'
General and administrative	2,597	4,046	5,214	37,751
Acquisition expenses	0	'	0	'
Costs and expenses	3,653	4,979	7,274	39,402
Real estate operating income	-3,500	-4,898	-6,966	-39,100
Other income (expense):	'	'	'	'
Interest expense	-7,779	-8,148	-15,213	-16,325
Interest and other income	2,686	2,723	5,381	5,455
Gain (loss) on interest rate swaps	0	0	0	0
Income from equity investment	12,848	26,693	21,454	45,011
Nonoperating income (expense)	7,755	21,268	11,622	34,141
Income (loss) before income tax expense	4,255	16,370	4,656	-4,959
Income tax benefit (expense)	-1	-1	-2	-2
Income (loss) from continuing operations	4,254	16,369	4,654	-4,961
Discontinued operations:	'	'	'	'
Operating loss from discontinued operations	0	0	0	658
Gain (loss) on disposition of discontinued operations	0	'	0	0
Income (loss) from discontinued operations	0	0	0	658
Net income (loss)	4,254	16,369	4,654	-4,303
Reportable Legal Entities \| Non- Guarantors	'	'	'	'
Revenues:	'	'	'	'
Rental income	103,802	103,088	204,349	204,322
Tenant reimbursements	22,891	21,286	46,578	43,427
Hotel income	6,505	6,562	10,566	11,516
Other property income	3,555	1,013	4,399	1,316
Revenues	136,753	131,949	265,892	260,581
Expenses:	'	'	'	'
Property operating costs	38,289	36,561	76,748	73,699
Hotel operating costs	4,689	4,820	8,830	9,081
Related-party	0	0	0	313
Other	675	530	964	1,143
Depreciation	29,764	26,627	56,687	53,104
Amortization	20,208	19,975	38,720	39,870
Impairment loss on real estate assets	1,432	'	14,982	'
General and administrative	5,822	4,954	10,155	8,080
Acquisition expenses	6,102	'	6,102	'
Costs and expenses	106,981	93,467	213,188	185,290
Real estate operating income	29,772	38,482	52,704	75,291
Other income (expense):	'	'	'	'
Interest expense	-15,753	-22,624	-30,911	-45,309
Interest and other income	1,800	9,111	3,609	18,221
Gain (loss) on interest rate swaps	-105	164	-335	221
Income from equity investment	0	0	0	0
Nonoperating income (expense)	-14,058	-13,349	-27,637	-26,867
Income (loss) before income tax expense	15,714	25,133	25,067	48,424
Income tax benefit (expense)	-350	-322	-5	-220
Income (loss) from continuing operations	15,364	24,811	25,062	48,204
Discontinued operations:	'	'	'	'
Operating loss from discontinued operations	-40	4,112	237	-10,513
Gain (loss) on disposition of discontinued operations	-650	'	-978	10,014
Income (loss) from discontinued operations	-690	4,112	-741	-499
Net income (loss)	14,674	28,923	24,321	47,705
Consolidating adjustments	'	'	'	'
Revenues:	'	'	'	'
Rental income	-91	-86	-180	-115
Tenant reimbursements	0	0	0	0
Hotel income	0	0	0	0
Other property income	-58	-47	-95	-79
Revenues	-149	-133	-275	-194
Expenses:	'	'	'	'
Property operating costs	-91	-86	-180	-115
Hotel operating costs	0	0	0	0
Related-party	-4	-4	-8	-24
Other	0	0	0	0
Depreciation	0	0	0	0
Amortization	0	0	0	0
Impairment loss on real estate assets	0	'	0	'
General and administrative	-54	-43	-87	-55
Acquisition expenses	0	'	0	'
Costs and expenses	-149	-133	-275	-194
Real estate operating income	0	0	0	0
Other income (expense):	'	'	'	'
Interest expense	4,672	4,723	9,354	9,451
Interest and other income	-4,672	-4,723	-9,354	-9,451
Gain (loss) on interest rate swaps	0	0	0	0
Income from equity investment	-18,928	-45,292	-28,975	-43,402
Nonoperating income (expense)	-18,928	-45,292	-28,975	-43,402
Income (loss) before income tax expense	-18,928	-45,292	-28,975	-43,402
Income tax benefit (expense)	0	0	0	0
Income (loss) from continuing operations	-18,928	-45,292	-28,975	-43,402
Discontinued operations:	'	'	'	'
Operating loss from discontinued operations	0	0	0	0
Gain (loss) on disposition of discontinued operations	0	'	0	0
Income (loss) from discontinued operations	0	0	0	0
Net income (loss)	($18,928)	($45,292)	($28,975)	($43,402)

Financial_Information_for_Pare5

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Consolidating Statements of Comprehensive Income) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	$8,021	$20,601	$11,421	($2,007)
Foreign currency translation adjustment	'	'	'	-83
Market value adjustment to interest rate swap	-43	2,168	211	2,717
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	7,978	22,769	11,632	627
Reportable Legal Entities \| Columbia Property Trust (Parent) (Guarantor)	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	8,021	20,601	11,421	-2,007
Foreign currency translation adjustment	'	'	'	-83
Market value adjustment to interest rate swap	-43	2,168	211	2,717
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	7,978	22,769	11,632	627
Reportable Legal Entities \| Columbia Property Trust OP (the Issuer)	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	4,254	16,369	4,654	-4,303
Foreign currency translation adjustment	'	'	'	0
Market value adjustment to interest rate swap	-43	2,168	211	2,717
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	4,211	18,537	4,865	-1,586
Reportable Legal Entities \| Non- Guarantors	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	14,674	28,923	24,321	47,705
Foreign currency translation adjustment	'	'	'	-83
Market value adjustment to interest rate swap	0	0	0	0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	14,674	28,923	24,321	47,622
Consolidating adjustments	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	-18,928	-45,292	-28,975	-43,402
Foreign currency translation adjustment	'	'	'	83
Market value adjustment to interest rate swap	43	-2,168	-211	-2,717
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	($18,885)	($47,460)	($29,186)	($46,036)

Financial_Information_for_Pare6

Financial Information for Parent Guarantor, Other Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Consolidating Statements of Cash Flows) (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	$112,983	$102,321
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	27,131	65,928
Investment in real estate and related assets	-188,558	-32,311
Investments in subsidiaries	0	'
Net cash provided by (used in) investing activities	-161,427	33,617
Cash flows from financing activities:	'	'
Borrowings, net of fees	129,202	119,760
Repayments of line of credit and notes payable	-56,300	-112,227
Issuance of common stock, net of redemptions and fees	'	-32,328
Distributions	-74,979	-103,030
Intercompany transfers, net	0	0
Net cash used in financing activities	-2,077	-127,825
Net increase (decrease) in cash and cash equivalents	-50,521	8,113
Effect of foreign exchange rate on cash and cash equivalents	0	-103
Cash and cash equivalents, beginning of period	99,855	53,657
Cash and cash equivalents, end of period	49,334	61,667
Columbia Property Trust (Parent) (Guarantor)	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	'	0
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	'	0
Investment in real estate and related assets	'	0
Net cash provided by (used in) investing activities	'	0
Cash flows from financing activities:	'	'
Borrowings, net of fees	'	0
Repayments of line of credit and notes payable	'	0
Issuance of common stock, net of redemptions and fees	'	-32,328
Distributions	'	-103,030
Intercompany transfers, net	'	136,389
Net cash used in financing activities	'	1,031
Net increase (decrease) in cash and cash equivalents	'	1,031
Effect of foreign exchange rate on cash and cash equivalents	'	0
Cash and cash equivalents, beginning of period	'	20,914
Cash and cash equivalents, end of period	'	21,945
Columbia Property Trust OP (the Issuer)	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	'	-41,902
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	'	65,928
Investment in real estate and related assets	'	-3,355
Net cash provided by (used in) investing activities	'	62,573
Cash flows from financing activities:	'	'
Borrowings, net of fees	'	119,801
Repayments of line of credit and notes payable	'	-111,000
Issuance of common stock, net of redemptions and fees	'	0
Distributions	'	0
Intercompany transfers, net	'	-30,808
Net cash used in financing activities	'	-22,007
Net increase (decrease) in cash and cash equivalents	'	-1,336
Effect of foreign exchange rate on cash and cash equivalents	'	0
Cash and cash equivalents, beginning of period	'	4,822
Cash and cash equivalents, end of period	'	3,486
Non- Guarantors	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	'	144,223
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	'	0
Investment in real estate and related assets	'	-28,956
Net cash provided by (used in) investing activities	'	-28,956
Cash flows from financing activities:	'	'
Borrowings, net of fees	'	-41
Repayments of line of credit and notes payable	'	-1,227
Issuance of common stock, net of redemptions and fees	'	0
Distributions	'	0
Intercompany transfers, net	'	-105,581
Net cash used in financing activities	'	-106,849
Net increase (decrease) in cash and cash equivalents	'	8,418
Effect of foreign exchange rate on cash and cash equivalents	'	-103
Cash and cash equivalents, beginning of period	'	27,921
Cash and cash equivalents, end of period	'	36,236
Reportable Legal Entities \| Columbia Property Trust (Parent) (Guarantor)	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	-73	'
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	0	'
Investment in real estate and related assets	0	'
Investments in subsidiaries	-133,515	'
Net cash provided by (used in) investing activities	-133,515	'
Cash flows from financing activities:	'	'
Borrowings, net of fees	0	'
Repayments of line of credit and notes payable	0	'
Distributions	-74,979	'
Intercompany transfers, net	179,565	'
Net cash used in financing activities	104,586	'
Net increase (decrease) in cash and cash equivalents	-29,002	'
Cash and cash equivalents, beginning of period	53,322	'
Cash and cash equivalents, end of period	24,320	'
Reportable Legal Entities \| Columbia Property Trust OP (the Issuer)	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	-19,585	'
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	27,131	'
Investment in real estate and related assets	-157,776	'
Investments in subsidiaries	0	'
Net cash provided by (used in) investing activities	-130,645	'
Cash flows from financing activities:	'	'
Borrowings, net of fees	129,807	'
Repayments of line of credit and notes payable	-55,000	'
Distributions	0	'
Intercompany transfers, net	59,837	'
Net cash used in financing activities	134,644	'
Net increase (decrease) in cash and cash equivalents	-15,586	'
Cash and cash equivalents, beginning of period	20,708	'
Cash and cash equivalents, end of period	5,122	'
Reportable Legal Entities \| Non- Guarantors	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	132,641	'
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	0	'
Investment in real estate and related assets	-30,782	'
Investments in subsidiaries	0	'
Net cash provided by (used in) investing activities	-30,782	'
Cash flows from financing activities:	'	'
Borrowings, net of fees	-605	'
Repayments of line of credit and notes payable	-1,300	'
Distributions	0	'
Intercompany transfers, net	-105,887	'
Net cash used in financing activities	-107,792	'
Net increase (decrease) in cash and cash equivalents	-5,933	'
Cash and cash equivalents, beginning of period	25,825	'
Cash and cash equivalents, end of period	19,892	'
Eliminations	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Cash flows from operating activities	0	'
Cash flows from investing activities:	'	'
Net proceeds from the sale of real estate	0	'
Investment in real estate and related assets	0	'
Investments in subsidiaries	133,515	'
Net cash provided by (used in) investing activities	133,515	'
Cash flows from financing activities:	'	'
Borrowings, net of fees	0	'
Repayments of line of credit and notes payable	0	'
Distributions	0	'
Intercompany transfers, net	-133,515	'
Net cash used in financing activities	-133,515	'
Net increase (decrease) in cash and cash equivalents	0	'
Cash and cash equivalents, beginning of period	0	'
Cash and cash equivalents, end of period	$0	'

Subsequent_Event_Details

Subsequent Event (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Aug. 06, 2014	Jul. 02, 2014
Subsequent Event (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Subsequent Event	Subsequent Event
Subsequent Event [Line Items]	'	'	'	'
Common stock, shares authorized	900,000,000	900,000,000	'	225,000,000
Dividend declared (dollars per share)	'	'	$0.30	'