City Office REIT (CIO) S-11/A 2 Dec 14 Registration of securities for real estate companies (amended) Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014
Document And Entity Information [Abstract]	'
Document Type	'S-11/A
Amendment Flag	'false
Document Period End Date	30-Sep-14
Trading Symbol	'CIO
Entity Registrant Name	'City Office REIT, Inc.
Entity Central Index Key	'0001593222
Entity Filer Category	'Non-accelerated Filer

Condensed_Consolidated_and_Com

Condensed Consolidated and Combined Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
		Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
				Scenario, Previously Reported [Member]	Scenario, Previously Reported [Member]
Assets	'	'	'	'	'
Land	$61,788,918	$30,164,513	$13,659,668	'	'
Building and improvement	115,639,203	62,908,338	24,380,754	'	'
Tenant improvement	25,252,774	14,590,971	8,204,156	'	'
Furniture, fixtures and equipment	198,114	198,114	11,679	'	'
Real estate properties, gross	202,879,009	107,861,936	46,256,257	'	'
Accumulated depreciation	-13,065,451	-7,735,450	-4,084,425	'	'
Real estate properties, net	189,813,558	100,126,486	42,171,832	'	'
Investments in unconsolidated entity	'	4,337,899	4,882,753	'	'
Cash and cash equivalents	8,855,196	7,127,764	3,106,616	'	'
Restricted cash	13,184,871	7,368,124	1,597,208	'	'
Rents receivable, net	7,372,062	4,680,284	2,275,774	'	'
Deferred financing costs, net of accumulated amortization	2,919,700	1,167,666	591,765	'	'
Deferred leasing costs, net of accumulated amortization	2,478,801	2,302,841	1,889,319	'	'
Acquired lease intangibles assets, net	26,995,279	13,751,563	'	14,400,755	4,002,289
Prepaid expenses and other assets	546,298	296,572	498,570	'	'
Deferred offering costs	'	1,830,950	'	'	'
Total Assets	252,165,765	142,990,149	'	143,639,341	61,016,126
Liabilities:	'	'	'	'	'
Debt	179,604,305	109,916,430	53,256,600	'	'
Accounts payable and accrued liabilities	4,201,127	2,347,999	'	2,997,191	594,080
Deferred rent	2,648,850	1,488,618	253,886	'	'
Tenant rent deposits	1,842,820	1,361,641	733,180	'	'
Acquired lease intangibles liability, net	649,234	167,346	168,518	'	'
Dividend distributions payable	2,689,532	'	'	'	'
Earn-out liability	8,000,000	'	'	'	'
Total liabilities	199,635,868	115,282,034	'	115,931,226	55,006,264
Commitments and Contingencies	'	'	'	'	'
Equity:	'	'	'	'	'
Common stock, $0.01 par value, 100,000,000 shares authorized, 8,192,915 shares issued and outstanding	81,929	'	'	'	'
Additional paid in capital	45,503,697	'	'	'	'
Accumulated deficit	-7,136,038	'	'	'	'
Predecessor equity	'	26,624,375	'	'	'
Owners' equity	38,449,588	26,624,375	6,149,404	'	'
Operating Partnership unitholders' noncontrolling interests	14,816,720	'	'	'	'
Noncontrolling interests	-736,411	1,083,740	-139,542	'	'
Total Equity	52,529,897	27,708,115	6,009,862	'	'
Total Liabilities and Equity	$252,165,765	$142,990,149	'	$143,639,341	$61,016,126

Condensed_Consolidated_and_Com1

Condensed Consolidated and Combined Statements of Operations (USD $)	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
			Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
Revenues:	'	'	'	'	'	'
Rental income	$9,036,858	$23,987,891	$6,222,764	$12,938,686	$18,427,794	$9,991,712
Expense reimbursement	843,753	1,796,567	406,622	1,093,117	1,316,068	1,053,466
Other	117,809	589,631	202,990	593,724	746,716	471,280
Total Revenues	9,998,420	26,374,089	6,832,376	14,625,527	20,490,578	11,516,458
Operating Expenses:	'	'	'	'	'	'
Property operating expenses	2,782,296	7,304,371	1,819,634	4,005,302	6,021,287	4,109,993
Insurance	167,046	489,471	144,057	374,655	518,361	398,083
Property taxes	753,329	1,775,641	458,611	1,015,164	1,385,954	969,564
Property management fees	225,719	619,497	143,764	397,297	539,460	571,420
Acquisition costs	401,200	1,551,347	'	1,479,292	1,479,292	212,765
Base management fee	226,295	411,471	'	'	'	'
Stock based compensation	382,205	667,347	'	'	'	'
General and administrative	407,075	821,379	'	'	'	'
Depreciation and amortization	4,057,809	10,633,593	2,530,128	5,245,498	7,775,219	3,956,204
Total Operating Expenses	9,402,974	24,274,117	5,096,194	12,517,208	17,719,573	10,218,029
Operating income/(loss)	595,446	2,099,972	1,736,182	2,108,319	2,771,005	1,298,429
Canadian offering costs	'	'	'	'	1,983,195	'
Interest Expense:	'	'	'	'	'	'
Contractual interest expense	-1,866,999	-5,821,533	-1,229,215	-3,065,648	'	'
Amortization of deferred financing costs	-159,670	-1,288,714	-433,495	-638,938	'	'
Loss on early extinguishment of Predecessor debt	'	-1,654,828	'	'	'	'
Interest expense, net	-2,026,669	-8,765,075	-1,662,710	-3,704,586	-5,368,016	-3,685,881
Change in fair value of earn-out	-942,650	-1,047,515	'	'	'	'
Gain on equity investment	'	4,474,644	'	'	'	'
Equity in income of unconsolidated entity	'	'	84,774	255,422	402,913	505,877
Net (loss)/income	-2,373,873	-3,237,974	158,246	-1,340,845	-4,177,293	-1,881,575
Less: Net (income)/loss attributable to noncontrolling interests in properties	-87,296	-8,326	21,368	60,356	44,368	286,481
Less: Net loss/(income) attributable to Predecessor	'	-1,973,197	179,614	-1,280,489	'	'
Less: Net loss attributable to Operating Partnership unitholders' noncontrolling interests	693,971	1,508,097	'	'	'	'
Net loss attributable to stockholders	($1,767,198)	($3,711,400)	'	'	($4,132,925)	($1,595,094)
Net loss per share:	'	'	'	'	'	'
Basic and diluted	($0.22)	($0.46)	'	'	'	'
Weighted average common shares outstanding:	'	'	'	'	'	'
Basic and diluted	8,192,915	8,133,940	'	'	'	'
Dividend distributions declared per common share and unit	$0.24	$0.42	'	'	'	'

Condensed_Consolidated_and_Com2

Condensed Consolidated and Combined Statements of Changes in Equity (USD $)

Total

Predecessor [Member]

Common Stock [Member]

Additional Paid-in Capital [Member]

Accumulated Deficit [Member]

Predecessor Equity [Member]

Predecessor Equity [Member]

Parent [Member]

Parent [Member]

Operating Partnership Unitholders' Noncontrolling Interests [Member]

Noncontrolling Interests in Properties [Member]

Noncontrolling Interests in Properties [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Balance, beginning at Dec. 31, 2011

'

$18,466,718

'

'

'

'

'

'

$16,902,575

'

'

$1,564,143

Contributions

'

5,125,000

'

'

'

'

'

'

4,612,500

'

'

512,500

Distributions

'

-15,700,281

'

'

'

'

'

'

-13,770,577

'

'

-1,929,704

Net income/ (loss)

'

-1,881,575

'

'

'

'

'

'

-1,595,094

'

'

-286,481

Balance ending at Dec. 31, 2012

'

6,009,862

'

'

'

'

'

'

6,149,404

'

'

-139,542

Net income/ (loss)

'

-1,340,845

'

'

'

'

'

'

'

'

'

'

Balance ending at Sep. 30, 2013

'

'

'

'

'

'

'

'

'

'

'

'

Balance, beginning at Dec. 31, 2012

'

6,009,862

'

'

'

'

'

'

6,149,404

'

'

-139,542

Contributions

'

27,472,313

'

'

'

'

'

'

26,107,313

'

'

1,365,000

Distributions

'

-1,596,767

'

'

'

'

'

'

-1,499,417

'

'

-97,350

Net income/ (loss)

'

-4,177,293

'

'

'

'

'

'

-4,132,925

'

'

-44,368

Balance ending at Dec. 31, 2013

'

27,708,115

'

'

'

'

26,624,375

'

26,624,375

'

'

1,083,740

Ending balance, shares at Dec. 31, 2013

'

8,192,915

'

'

'

'

'

'

'

'

'

'

Contributions

'

3,905,445

'

'

'

'

3,843,445

'

3,843,445

'

'

62,000

Distributions

'

-1,500,000

'

'

'

'

-1,347,000

'

-1,347,000

'

'

-153,000

Net income/ (loss)

'

1,944,487

'

'

'

'

1,973,197

'

1,973,197

'

'

-28,710

Balance ending at Apr. 20, 2014

'

32,058,047

'

'

'

'

31,094,017

'

31,094,017

'

'

964,030

Balance, beginning at Mar. 31, 2014

'

'

'

'

'

'

'

'

'

'

'

'

Net income/ (loss)

'

-258,842

'

'

'

'

'

'

'

'

'

'

Balance ending at Apr. 20, 2014

'

32,058,047

'

'

'

'

'

'

'

'

'

'

Net proceeds from sale of common shares, values

72,470,455

'

65,821

72,404,634

'

'

'

72,470,455

'

'

'

'

Net proceeds from sale of common shares

'

'

6,582,150

'

'

'

'

'

'

'

'

'

Formation Transaction

-42,620,221

'

16,108

-27,568,284

'

-31,094,017

'

-58,646,193

'

17,684,113

-1,658,141

'

Formation Transaction, shares

'

'

1,610,765

'

'

'

'

'

'

'

'

'

Restricted stock award grants

667,347

'

'

667,347

'

'

'

667,347

'

'

'

'

Dividend distributions declared

-4,783,934

'

'

'

-3,424,638

'

'

-3,424,638

'

-1,359,296

'

'

Distributions

-79,336

'

'

'

'

'

'

'

'

'

-79,336

'

Net income/ (loss)

-5,182,461

'

'

'

-3,711,400

'

'

-3,711,400

'

-1,508,097

37,036

'

Balance ending at Sep. 30, 2014

$52,529,897

'

$81,929

$45,503,697

($7,136,038)

'

'

$38,449,588

'

$14,816,720

($736,411)

'

Ending balance, shares at Sep. 30, 2014

8,192,915

'

8,192,915

'

'

'

'

'

'

'

'

'

Condensed_Consolidated_and_Com3

Condensed Consolidated and Combined Statements of Cash Flows (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
		Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
Cash Flows from Operating Activities:	'	'	'	'
Net loss	($3,237,974)	($1,340,845)	($4,177,293)	($1,881,575)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'	'	'
Depreciation and amortization	10,633,593	5,245,498	7,775,219	3,956,204
Amortization of deferred financing costs	1,288,714	638,938	'	'
Amortization of deferred costs	'	'	318,464	613,353
Amortization of above/below market lease	367,708	371,930	521,232	276,913
Increase in straight-line rent	-1,145,563	-1,667,624	-2,329,595	-1,156,240
Non-cash stock compensation	667,347	'	'	'
Change in fair value of earn-out	1,047,515	'	'	'
Loss on early extinguishment of debt	885,024	'	'	'
Gain on equity investment	-4,474,644	'	'	'
Equity in income of unconsolidated entity	'	-255,422	-402,913	-505,877
Other professional fees	'	'	160,000	'
Canadian offering costs	'	'	1,983,195	'
Changes in non-cash working capital:	'	'	'	'
Restricted cash	'	'	-5,770,916	-1,484,596
Rents receivable, net	-1,546,216	-365,362	-74,915	-242,705
Prepaid expenses and other assets	-218,190	277,711	424,521	-284,793
Related party receivables	'	'	'	4,121,507
Accounts payable and accrued liabilities	72,100	1,015,543	1,169,590	55,245
Deferred rent	1,160,232	1,791,921	1,234,732	208,502
Tenant rent deposits	481,179	658,273	628,461	215,079
Net Cash Provided By Operating Activities	5,980,825	6,370,561	1,459,782	3,891,017
Cash Flows to Investing Activities:	'	'	'	'
Additions to real estate properties	-2,542,032	-1,885,438	-3,894,910	-3,643,862
Acquisition of real estate, net of cash assumed	-62,543,576	-71,313,835	-71,313,835	-13,888,281
Distribution from unconsolidated entity	'	672,469	947,767	1,392,255
Deferred leasing cost	-570,735	-722,775	-844,522	-969,923
Net Cash Used In Investing Activities	-65,656,343	-73,249,579	-75,105,500	-17,109,811
Cash Flows from Financing Activities:	'	'	'	'
Net proceeds from issuance of common shares	72,470,455	'	'	'
Debt issuance cost	'	'	-769,365	-885,518
Formation transactions	-35,244,570	'	'	'
Debt issuance and extinguishment costs	-3,925,772	-841,035	'	'
Proceeds from mortgage loans payable	195,260,000	56,294,637	57,777,338	41,925,021
Repayment of mortgage loans payable	-161,572,125	-638,513	-1,117,508	-15,606,216
Contributions from partners and members	3,843,445	22,007,794	22,008,168	4,612,500
Contributions from noncontrolling interests	62,000	1,365,000	1,365,000	512,500
Distributions to partners and members	-1,347,000	-1,224,120	-1,499,417	-13,770,577
Distributions to noncontrolling interests in properties	-232,334	-97,350	'	'
Distributions to holders of noncontrolling interests in combined subsidiaries	'	'	-97,350	-1,929,704
Dividend distributions paid to stockholders and Operating Partnership unitholders	-2,094,402	'	'	'
Change in restricted cash	-5,816,747	-5,540,614	'	'
Net Cash Provided By Financing Activities	61,402,950	71,325,799	77,666,866	14,858,006
Net Increase in Cash and Cash Equivalents	1,727,432	4,446,781	4,021,148	1,639,212
Cash and Cash Equivalents, Beginning of Period	7,127,764	3,106,616	3,106,616	1,467,404
Cash and Cash Equivalents, End of Period	8,855,196	7,553,397	7,127,764	3,106,616
Supplemental Disclosures of Cash Flow Information:	'	'	'	'
Cash paid for interest	6,555,549	3,067,866	4,813,188	2,478,106
Accrued dividend distributions payable	$2,689,532	'	'	'

Condensed_Consolidated_and_Com4

Condensed Consolidated and Combined Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
		Predecessor [Member]
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	8,192,915	8,192,915
Common stock, shares outstanding	8,192,915	8,192,915

Organization_and_Description_o

Organization and Description of Business	9 Months Ended											12 Months Ended
	Sep. 30, 2014											Dec. 31, 2013
Accounting Policies [Abstract]	'											'
Organization and Description of Business	'											'
	1. Organization and Description of Business											1. Organization and Description of Business
	City Office REIT, Inc. (the “Company”) was organized in the state of Maryland on November 26, 2013. On April 21, 2014, the Company completed its initial public offering (“IPO”) of shares of the Company’s common stock. The Company contributed the net proceeds of the IPO to City Office REIT Operating Partnership, L.P., a Maryland limited partnership (the “Operating Partnership”), in exchange for common units in the Operating Partnership. Both the Company and the Operating Partnership commenced operations upon completion of the IPO and certain related formation transactions (the “Formation Transactions”).											City Office REIT, Inc. Predecessor (the “Predecessor”), represents the combination of the five properties outlined below (the “Properties”) and a 42.3% unconsolidated investment in an entity, Cherry Creek Campus (“Cherry Creek”), that owns an office complex containing three buildings located in Denver Colorado. The Predecessor does not represent a legal entity. The Predecessor and its related assets and liabilities are under common control and are expected to be contributed to a newly formed entity, City Office REIT, Inc., (“City Office”) in connection with a contemplated initial public offering (the “Offering”) in the United States of America.
	The Company’s interest in the Operating Partnership entitles the Company to share in distributions from, and allocations of profits and losses of, the Operating Partnership in proportion to the Company’s percentage ownership of common units. As the sole general partner of the Operating Partnership, the Company has the exclusive power under the partnership agreement to manage and conduct the Operating Partnership’s business, subject to limited approval and voting rights of the limited partners.											City Office is a newly incorporated Maryland corporation formed on November 26, 2013 and has conducted no operations. City Office anticipates filing a registration statement with the Securities and Exchange Commissions in connection with the Offering. City Office will contribute the net proceeds of the Offering to City Office REIT Operating Partnership LP, a Maryland limited Liability partnership (the “Operating Partnership”) in exchange for common units in our Operating Partnership.
	City Office REIT, Inc. Predecessor (the “Predecessor”) represents the combination of the six properties outlined below (the “Properties”). The Predecessor does not represent a legal entity. The Predecessor and its related assets and liabilities are under common control and were contributed to a newly formed Operating Partnership in connection with the IPO of the Company on April 21, 2014.											The Operating Partnership will use the net proceeds of the Offering to pay fees in connection with the assumption of the indebtedness; pay expenses incurred in connection with the Offering and the formation transactions; repay loans that were made to several of the contributing entities by certain investors in such entities, for general working capital purposes and to fund potential future acquisitions.
	The historical financial results in these financial statements for periods prior to April 21, 2014 relate to the Predecessor. The Predecessor is comprised of the following properties:											If this offering is successful, City Office intends that it will become a publicly owned corporation that elects and qualifies to be taxed as a real estate investment trust, or REIT, for U.S. federal income tax purposes commencing with its taxable year ending December 31, 2014.
												The Properties include:
		•		City Center: Property in St. Petersburg, Florida, acquired in December 2010.								City Center: The Predecessor holds a 90% interest in a property in St. Petersburg, Florida, acquired in December 2010.
												Central Fairwinds: The Predecessor holds a 90% interest in a property in Orlando, Florida, acquired in May 2012.
		•		Central Fairwinds: Property in Orlando, Florida, acquired in May 2012.								AmberGlen: The Predecessor holds an 85% interest in a Limited Partnership that owns a property in Portland, Oregon, acquired in December 2009.
												Washington Group Plaza: The Predecessor holds an 89.9% interest in a property in downtown Boise, Idaho, acquired in June 2013.
		•		AmberGlen: Property in Portland, Oregon, acquired in December 2009.								Corporate Parkway: The Predecessor holds a 100% interest in a property in Allentown, Pennsylvania, acquired in May 2013.
		•		Washington Group Plaza: Property in downtown Boise, Idaho, acquired in June 2013.
		•		Corporate Parkway: Property in Allentown, Pennsylvania, acquired in May 2013.
		•		Cherry Creek: Property in Denver, Colorado, acquired in January 2014.
	The Company intends to elect to be taxed and to continue to operate in a manner that will allow it to qualify as a real estate investment trust (“REIT”) commencing with its taxable year ending December 31, 2014. Subject to qualification as a REIT, the Company will be permitted to deduct dividend distributions paid to its stockholders, eliminating the U.S. federal taxation of income represented by such distributions at the Company level. REITs are subject to a number of organizational and operational requirements. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and any applicable alternative minimum tax.
	Pursuant to the Jumpstart Our Business Startups Act (the “JOBS Act”), the Company qualifies as an emerging growth company (“EGC”). An EGC may choose to take advantage of the extended private company transition period provided for complying with new or revised accounting standards that may be issued by the Financial Accounting Standards Board (“FASB”) or the Securities and Exchange Commission (the “SEC”). The Company has elected to opt out of such extended transition period. This election is irrevocable.
	Initial Public Offering and Formation Transactions
	The Company’s operations will be carried on primarily through the Operating Partnership and wholly owned subsidiaries of the Operating Partnership. Both the Company and the Operating Partnership commenced operations upon completion of the IPO and certain related formation transactions.
	On April 21, 2014, the Company closed the IPO, pursuant to which it sold 5,800,000 shares of common stock to the public at a public offering price of $12.50 per share. The Company raised $72.5 million in gross proceeds, resulting in net proceeds to us of approximately $63.4 million after deducting approximately $5.1 million in underwriting discounts and approximately $4.0 million in other expenses relating to the IPO. On May 9, 2014, the underwriters of the IPO exercised their overallotment option to purchase an additional 782,150 shares of the Company’s common stock at the IPO price of $12.50 a share resulting in additional gross proceeds of approximately $9.8 million. The net proceeds to the Company were $9.1 million after deducting approximately $0.7 million in underwriting discounts. The Company’s common stock began trading on the New York Stock Exchange under the symbol “CIO” on April 15, 2014.
	The Company contributed the net proceeds of the IPO to the Operating Partnership in exchange for common units in the Operating Partnership. The Operating Partnership utilized a portion of the net proceeds of the IPO to pay fees in connection with the assumption of the indebtedness, pay expenses incurred in connection with the IPO and Formation Transactions and repay loans that were made to several of the contributing entities by certain investors in such entities. The remaining funds are expected to be used for general working capital purposes and to fund potential future acquisitions.
	Pursuant to the Formation Transactions and exercise of the underwriters’ overallotment option, the Operating Partnership acquired a 100% interest in each of the Washington Group Plaza, Cherry Creek and Corporate Parkway properties and acquired an approximate 76% economic interest in the AmberGlen property, 90% interest in the Central Fairwinds property and 95% interest in the City Center property. These initial property interests were contributed in exchange for 3,731,209 common units, 1,610,765 common stock and $19.4 million of cash. On May 9, 2014, subsequent to the exercise of the underwriters’ overallotment option, 479,305 common units and 248,095 common stock were redeemed for $9.1 million in cash.
	In connection with the IPO and Formation Transactions, the Company, through its Operating Partnership, extinguished the loan on the Central Fairwinds property and completed a refinancing of three properties (Cherry Creek, City Center and Corporate Parkway) with a new $95 million non-recourse mortgage loan and proceeds from the IPO. The loan bears a fixed interest rate of 4.34% and matures on May 6, 2021.
	The following is a summary of the Predecessor Statements of Operations for the period from April 1, 2014 through April 20, 2014 and for the period from January 1, 2014 through April 20, 2014, and the Company’s Statement of Operations for the period from April 21, 2014 through September 30, 2014. These amounts are included in the condensed consolidated and combined statement of operations herein for the three and nine months ended September 30, 2014. All balances as of December 31, 2013 and for the three and nine months ended September 30, 2013 are those of the Predecessor.
			Predecessor						City Office REIT, Inc
			April 1, 2014			January 1, 2014			April 21, 2014 through
			through April 20,			through April 20,			September 30, 2014
			2014			2014
	Revenues:
	Rental income		$	1,628,480		$	8,865,238		$	15,122,653
	Expense reimbursement			105,569			555,611			1,240,956
	Other			47,198			342,859			246,772
	Total Revenues			1,781,247			9,763,708			16,610,381
	Operating Expenses:
	Property operating expenses			510,431			2,764,893			4,539,478
	Insurance			23,570			176,428			313,043
	Property taxes			136,684			597,788			1,177,853
	Property management fees			27,265			234,882			384,615
	Acquisition costs			—			806,344			745,003
	Base management fees			—			—			411,471
	Stock-based compensation			—			—			667,347
	General and administrative			29,799			79,799			741,580
	Depreciation and amortization			701,962			3,861,939			6,771,654
	Total Operating Expenses			1,429,711			8,522,073			15,752,044
	Operating income			351,536			1,241,635			858,337
	Interest expense, net			(610,378	)		(3,771,792	)		(4,993,283	)
	Change in fair value of earn-out			—			—			(1,047,515	)
	Gain on equity investment			—			4,474,644			—
	Net (Loss)/Income			(258,842	)		1,944,487			(5,182,461	)
	Net Loss attributable to noncontrolling interests in properties			18,785			28,710			(37,036	)
	Net (Loss)/Income attributable to Predecessor			(240,057	)		1,973,197			—
	Net loss attributable to Operating Partnership noncontrolling interests									1,508,097
	Net loss attributable to Stockholders									(3,711,400	)

Summary_of_Significant_Account

Summary of Significant Accounting Policies

9 Months Ended

12 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Accounting Policies [Abstract]

'

'

Summary of Significant Accounting Policies

'

'

2. Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Basis of Preparation and Summary of Significant Accounting Policies

Basis of Preparation

The accompanying condensed consolidated and combined financial statements were prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and include the financial position and results of operations of the Company, the Operating Partnership and its wholly owned subsidiaries. All significant intercompany transactions and balances have been eliminated on consolidation.

The Predecessor represents a combination of certain entities holding interests in real estate that are commonly controlled. Due to their common control, the financial statements of the separate entities which own the properties are presented on a combined basis.

The Predecessor represents a combination of certain entities holding interests in real estate that were commonly controlled prior to the Formation Transactions. Due to their common control, the financial statements of the separate entities which own the properties are presented on a combined basis in the Predecessor financial statements.

The accompanying combined financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). All significant intercompany balances and transactions have been eliminated in combination.

The accompanying condensed consolidated and combined financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). All significant intercompany balances and transactions have been eliminated on combination.

The information furnished in the accompanying condensed consolidated and combined financial statements reflects all adjustments that, in the opinion of management, are necessary for a fair presentation of the aforementioned condensed consolidated and combined financial statements for the interim periods. Operating results for the three and nine months ended September 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014. These interim financial statements should be read in conjunction with the audited combined financial statements of the Predecessor for the year ended December 31, 2013, included in the Company’s final prospectus dated April 14, 2014.

Use of Estimates

Variable interest entities (“VIE”) are accounted for within the scope of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 810, “Consolidation” and are required to be consolidated by their primary beneficiary. The primary beneficiary of a variable interest entity is the enterprise that has the power to direct the activities that most significantly impact the variable interest entity’s economic performance and the obligation to absorb losses or the right to receive benefits of the variable interest entity that could be significant to the variable interest entity. Management has evaluated the applicability of ASC Topic 810 to its investments in Cherry Creek and determined that this entity is not a variable interest entity and that the Predecessor is not the primary beneficiary and, therefore, consolidation of this investment is not required. This investment is accounted for using the equity method of accounting.

The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the combined financial statements and the reported amounts of revenues and expenses during the period. Such estimates are based on management’s best judgment, after considering past, current and expected events and economic conditions. Actual results could differ from management’s estimates.

Noncontrolling Interest

Business Combinations

The Predecessor follows the provisions pertaining to noncontrolling interests of ASC Topic 810. A noncontrolling interest is the portion of equity in a subsidiary not attributable, directly or indirectly, to a parent. Among other matters, the noncontrolling interest standards require that noncontrolling interests be reported as part of equity in the combined balance sheet (separately from the controlling interest’s equity). The noncontrolling interest standards also require companies to disclose the changes in the noncontrolling interest in the statement of equity or in a separate note to the financial statements; and require that net income include earnings attributable to the noncontrolling interest with disclosure on the face of the statement of operations of the amounts attributable to the parent and to the noncontrolling interest.

The fair value of the real estate acquired, which includes the impact of fair value adjustments for assumed mortgage debt related to property acquisitions, is allocated to the acquired tangible assets, consisting of land, buildings and improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases and value of tenant relationships, based in each case on their fair values. Acquisition costs are expensed as incurred in the accompanying combined statements of operations. Also, noncontrolling interests acquired are recorded at estimated fair market value.

Use of Estimates

The fair value of the tangible assets of an acquired property (which includes land, buildings and improvements and fixtures and equipment) is determined by valuing the property as if it were vacant. The “as-if-vacant” value is then allocated to land and buildings and improvements based on management’s determination of relative fair values of these assets. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions.

Management has made a number of significant estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses to prepare these combined financial statements in conformity with GAAP. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management adjusts such estimates when facts and circumstances dictate. The most significant estimates made include the recoverability of accounts receivable, allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed, the determination of VIEs and which entities should be consolidated, the determination of impairment of long-lived assets, loans receivable and equity method investments, valuation of derivative financial instruments and the useful lives of long-lived assets. Actual results could differ materially from those estimates.

The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place lease rent and management’s estimate of current market rents. Below-market lease intangibles are recorded as part of acquired lease intangibles liability and amortized into rental revenue over the non-cancelable periods and bargain renewal periods of the respective leases. Above-market leases are recorded as part of intangible assets and amortized as a direct charge against rental revenue over the noncancelable portion of the respective leases.

Cash and Cash Equivalents

The fair value of acquired in-place leases are recorded based on the costs management estimates the Company would have incurred to lease the property to the occupancy level of the property at the date of acquisition. Such estimates include the fair value of leasing commissions and legal costs that would be incurred to lease the property to this occupancy level. Additionally, management evaluates the time period over which such occupancy level would be achieved and includes an estimate of the net operating costs incurred during the lease-up period. Acquired in-place leases are amortized on a straight-line basis over the term of the individual leases.

Cash and cash equivalents include unrestricted cash and short-term investments with a maturity date of less than three months when acquired.

Revenue Recognition

Restricted Cash

The Company recognizes lease revenue on a straight-line basis over the term of the lease. Certain leases allow for the tenant to terminate the lease, but the tenant must make a termination payment as stipulated in the lease. If the termination payment is in such an amount that continuation of the lease appears, at the time of lease inception, to be reasonably assured, then the Company recognizes revenue over the term of the lease. The Company has determined that for these leases, the termination payment is in such an amount that continuation of the lease appears, at the time of inception, to be reasonably assured. The Company recognizes lease termination fees as revenue in the period received and writes off unamortized lease-related intangible and other lease-related account balances, provided there are no further Company obligations under the lease. Otherwise, such fees and balances are recognized on a straight-line basis over the remaining obligation period with the termination payments being recorded as a component of rent receivable-deferred or deferred revenue on the consolidated balance sheets.

Restricted cash consists of cash held in escrow by lenders pursuant to certain lender agreements.

If the Company funds tenant improvements and the improvements are deemed to be owned by the Company, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. If the Company determines that the tenant allowances are lease incentives, the Company commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. The lease incentive is recorded as a deferred expense and amortized as a reduction of revenue on a straight-line basis over the respective lease term.

Rent Receivable, Net

Recoveries from tenants for real estate taxes, insurance and other operating expenses are recognized as revenues in the period that the applicable costs are incurred. The Company recognizes differences between estimated recoveries and the final billed amounts in the subsequent year. Final billings to tenants for real estate taxes, insurance and other operating expenses did not vary significantly as compared to the estimated receivable balances.

The Predecessor continuously monitors collections from tenants and makes a provision for estimated losses based upon historical experience and any specific tenant collection issues that the Predecessor has identified. As of December 31, 2013 and 2012, the Predecessor’s allowance for doubtful accounts was not significant.

Real Estate Properties

Business Combinations

Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straightline basis over estimated useful lives of:

The fair value of the real estate acquired, which includes the impact of fair value adjustments for assumed mortgage debt related to property acquisitions, is allocated to the acquired tangible assets, consisting of land, building and improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in place leases and value of tenant relationships, based in each case on their fair values. Acquisition costs are expensed as incurred in the accompanying combined statements of operations. Also, noncontrolling interests acquired are recorded at estimated fair market value.

The fair value of the tangible assets of an acquired property (which includes land, building and improvements and fixtures and equipment) is determined by valuing the property as if it were vacant. The “as-if-vacant” value is then allocated to land and building and improvements based on management’s determination of relative fair values of these assets. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions.

The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place lease rent and management’s estimate of current market rents. Below-market lease intangibles are recorded as part of acquired lease intangibles liability and amortized into rental revenue over the non-cancelable periods and bargain renewal periods of the respective leases. Above-market leases are recorded as part of intangible assets and amortized as a direct charge against rental revenue over the non-cancelable portion of the respective leases.

Years

The fair value of acquired in place leases are recorded based on the costs management estimates the Predecessor would have incurred to lease the property to the occupancy level of the property at the date of acquisition. Such estimates include the fair value of leasing commissions and legal costs that would be incurred to lease the property to this occupancy level. Additionally, management evaluates the time period over which such occupancy level would be achieved and includes an estimate of the net operating costs incurred during the lease-up period. Acquired in place leases are amortized on a straight-line basis over the term of the individual leases.

Buildings and improvement

29-50

Revenue Recognition

Furniture, fixtures and equipment

7-Apr

The Predecessor recognizes lease revenue on a straight-line basis over the term of the lease. Certain leases allow for the tenant to terminate the lease, but the tenant must make a termination payment as stipulated in the lease. If the termination payment is in such an amount that continuation of the lease appears, at the time of lease inception, to be reasonably assured, then the Predecessor recognizes revenue over the term of the lease. The Predecessor has determined that for these leases, the termination payment is in such an amount that continuation of the lease appears, at the time of inception, to be reasonably assured. The Predecessor recognizes lease termination fees as revenue in the period received and writes off unamortized lease-related intangible and other lease-related account balances, provided there are no further Predecessor obligations under the lease. Otherwise, such fees and balances are recognized on a straight-line basis over the remaining obligation period with the termination payments being recorded as a component of rent receivable-deferred or deferred revenue on the combined balance sheets.

Expenditures for maintenance and repairs are charged to operations as incurred.

If the Predecessor funds tenant improvements and the improvements are deemed to be owned by the Predecessor, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. If the Predecessor determines that the tenant allowances are lease incentives, the Predecessor commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. The lease incentive is recorded as a deferred expense and amortized as a reduction of revenue on a straight-line basis over the respective lease term.

Impairment of Real Estate Properties

Recoveries from tenants for real estate taxes, insurance and other operating expenses are recognized as revenues in the period that the applicable costs are incurred. The Predecessor recognizes differences between estimated recoveries and the final billed amounts in the subsequent year. Final billings to tenants for real estate taxes, insurance and other operating expenses did not vary significantly as compared to the estimated receivable balances.

Long-lived assets currently in use are reviewed periodically for possible impairment and will be written down to fair value if considered impaired. Long-lived assets, to be disposed of, are written down to the lower of cost or fair value less the estimated cost to sell. The Company reviews its real estate properties for impairment when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. The Company measures and records impairment losses and reduces the carrying value of properties when indicators of impairment are present and the expected undiscounted cash flows related to those properties are less than their carrying amounts. In cases where the Company does not expect to recover its carrying costs on properties held for use, the Company reduces its carrying costs to fair value.

Offering Costs

Real Estate Properties

Costs related to the IPO and Formation Transactions paid by the Company’s Predecessor were reimbursed from the proceeds of the IPO.

Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straight-line basis over estimated useful lives of:

Income Taxes

The Company intends to elect to be taxed and to continue to operate in a manner that will allow it to qualify as a REIT under the U.S. Internal Revenue Code (the “Code”) commencing with its taxable year ending December 31, 2014. To qualify as a REIT, the Company is required to distribute dividends equal to at least 90% of the REIT taxable income (computed without regard to the dividends paid deduction and net capital gains) to its stockholders, and meet the various other requirements imposed by the Code relating to matters such as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided the Company qualifies for taxation as a REIT, it is generally not subject to U.S. federal corporate-level income tax on the earnings distributed currently to its stockholders. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and any applicable alternative minimum tax. In addition, the Company may not be able to re-elect as a REIT for the four subsequent taxable years.

For periods prior to the completion of the IPO and the Formation Transactions on April 21, 2014, no provision was made for U.S. federal, state or local income taxes because profits and losses of the Predecessor flowed through to its respective partners, members and shareholders who were individually responsible for reporting such amounts.

Years

For periods subsequent to the completion of the IPO and the Formation Transactions, the taxable REIT subsidiaries are subject to federal, state and local corporate income taxes to the extent there is taxable income.

Buildings and improvements

29-50

Noncontrolling Interests

Furniture, fixtures and equipment

7-Apr

Upon completion of the IPO and Formation Transactions and exercise of the underwriters’ overallotment option, the Operating Partnership issued 3,251,904 common units of limited partnership interest to the Predecessor’s prior investors as partial consideration for the contribution of their interest in the Predecessor to the Operating Partnership. Noncontrolling interest in the Company represents common units of the Operating Partnership held by the Predecessor’s prior investors.

Expenditures for maintenance and repairs are charged to operations as incurred.

As of September 30, 2014, the Company held a 71.6% interest in the Operating Partnership. As the sole general partner and the majority interest holder, the Company consolidates the financial position and results of operations of the Operating Partnership.

Impairment of Real Estate Properties

Dividends

Long-lived assets currently in use are reviewed periodically for possible impairment and will be written down to fair value if considered impaired. Long-lived assets to be disposed of are written down to the lower of cost or fair value less the estimated cost to sell. The Predecessor reviews its real estate properties for impairment when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. The Predecessor measures and records impairment losses and reduces the carrying value of properties when indicators of impairment are present and the expected undiscounted cash flows related to those properties are less than their carrying amounts. In cases where the Predecessor does not expect to recover its carrying costs on properties held for use, the Predecessor reduces its carrying costs to fair value. Management does not believe that the values of its properties within the portfolio are impaired as of December 31, 2013 and 2012.

On May 12, 2014, the Company’s board of directors declared an initial, prorated cash dividend of $0.183 per share for the quarterly period from April 21 2014 through June 30, 2014, which is equivalent to a full quarterly dividend of $0.235. The dividend was payable on July 17, 2014 to stockholders and common unitholders of record on July 3, 2014. The $1.5 million in dividends was paid to stockholders and $0.6 million to common unitholders, totaling $2.1 million.

Investment in Unconsolidated Entity

On September 15, 2014, the Company’s board of directors declared a cash dividend of $0.235 per share for the quarterly period from July 1, 2014 through September 30, 2014. The dividend was payable on October 17, 2014 to stockholders and common unitholders of record on October 3, 2014. Subsequent to September 30, 2014, $1.9 million in dividends was paid to stockholders and $0.8 million to common unitholders, totaling $2.7 million.

The Predecessor accounts for its investment in the unconsolidated entity using the equity method as it does not exercise control over significant asset decisions such as buying, selling or financing nor is it the primary beneficiary under ASC Topic 810, as discussed above. Under the equity method, the Predecessor increases its investment balance by recording its proportionate share of net income and contributions and decreases its investment balance by recording its proportionate share of net loss and distributions.

Equity-Based Compensation

The Predecessor reviews its investment in unconsolidated entity for other-than-temporary declines in market value when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. In this analysis of fair value, the Predecessor uses a discounted cash flow analysis to estimate the fair value of its investment taking into account expected cash flow from operations, holding period and net proceeds from the dispositions of the property. Any decline that is not expected to be recovered is considered other than temporary and an impairment charge is recorded as a reduction in the carrying value of the investment. For the years ended December 31, 2013 and 2012, there were no impairment charges related to the Predecessor’s investment in unconsolidated entity.

The Company accounts for equity-based compensation, including shares of restricted stock units, in accordance with ASC Topic 718 Compensation – Stock Compensation, which requires the Company to recognize an expense for the fair value of equity-based awards. The estimated fair value of restricted stock units is amortized over their respective vesting periods. See note 11 for further details.

Concentration of Credit Risk

Earnings per Share

The Predecessor places its temporary cash investments in high credit financial institutions. However, a portion of temporary cash investments may exceed FDIC insured levels from time to time. The Predecessor has never experienced any losses related to these balances. All of the Predecessor’s noninterest-bearing cash balances were fully insured at December 31, 2012 due to a temporary federal program in effect from December 31, 2010 through December 31, 2012. Under the program, there was no limit to the amount of insurance for eligible accounts. Beginning in 2013, insurance coverage has reverted to $250,000 per depositor at each financial institution, and the Predecessor’s noninterest-bearing cash balances may again exceed FDIC insured limits.

The Company calculates net income per share based upon the weighted average shares outstanding during the period beginning April 2014. Diluted earnings per share is calculated after giving effect to all potential dilutive shares outstanding during the period. There were 3,251,904 potentially dilutive shares outstanding related to the issuance of common units held by noncontrolling interests during the three and nine months ended September 30, 2014. However, the shares were excluded from the computation of diluted shares as their impact would have been anti-dilutive. As a result, the number of diluted outstanding shares was equal to the number of basic outstanding shares.

Income Tax

New Accounting Pronouncements

For U.S. federal income tax purposes, the Predecessor is treated as a partnership and all items of income and loss are attributable to the individual partner tax returns. Accordingly, no provision for federal income taxes has been made in these combined financial statements. However, the Predecessor is required to pay certain state and local entity level taxes which are expensed as incurred.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which creates a new Topic Accounting Standards Codification (Topic 606). The standard is principle-based and provides a five-step model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. This standard is effective for interim or annual periods beginning after December 15, 2016 and allows for either full retrospective or modified retrospective adoption. Early adoption of this standard is not allowed. We are currently evaluating the impact the adoption of Topic 606 will have on our financial statements.

The Predecessor applies FASB ASC Topic 740 (“Topic 740”), Income Taxes, in accounting for income tax uncertainties. Topic 740 requires a company to recognize the tax benefits of certain tax positions only when the position is “more likely than not” to be sustained assuming examination by the revenue authorities. The tax benefit recognized is the largest amount of benefit that is greater than 50 percent likely of being realized upon ultimate settlement. Management concluded as of December 31, 2013 and 2012 that the Predecessor did not have any liabilities for any uncertain tax positions. The Predecessor’s tax returns for the prior three years are subject to examination by U.S. federal and state revenue authorities. The Predecessor’s policy is to report any interest and penalties as a component of general and administrative expenses.

Derivative Instruments and Hedging Activities

The Predecessor records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on whether the Predecessor has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The Predecessor has not elected to designate any instruments as a hedge under ASC 815-10.

As of December 31, 2013 and 2012, the Predecessor has interest rate cap swaps that are not designated as hedges. These derivatives are not speculative and are used to manage the Predecessor’s exposure to interest rate movements and other identified risks, but the Predecessor has elected not to designate these instruments in hedging relationships based on the provisions in ASC 815-10. The changes in fair value of derivatives not designated in hedging relationships have been recognized in earnings. Summarized below are the interest rate derivatives that were not designated as cash flow hedges and the fair value of all derivative assets and liabilities as of December 31, 2013 and 2012:

Fair Value as of

Property

Type of

Notional

Maturity

Effective rate

December 31, 2013

December 31, 2012

Instrument

amount

date

City Center

Interest Rate Swap

$

15,000,000

June 2014

6

%

$

—

$

3,000

Fair Value of Financial Instruments

ASC 820-10, Fair Value Measurements and Disclosures (“ASC 820-10”) defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. ASC 820-10 applies to reported balances that are required or permitted to be measured at fair value under existing accounting pronouncements; accordingly, the standard does not require any new fair value measurements of reported balances.

ASC 820-10 emphasizes that fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC 820-10 establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Predecessor has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which is typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Predecessor’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

Cash Equivalents, Restricted Cash, Accounts Receivable, Accounts Payable and Accrued Liabilities

The Predecessor estimates that the fair value approximates carrying value due to the relatively short-term nature of these instruments.

Interest Rate Swap

The majority of the inputs used to value the Company’s interest rate swap liability fall within Level 2 of the fair value hierarchy, such as observable market interest rate curves; however, the credit valuation associated with the interest rate swap liability utilizes Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Predecessor and its counterparties. As of December 31, 2013 and 2012, the Predecessor determined that the credit valuation adjustment relative to the overall interest rate swap liability is not significant. As a result, the entire interest rate swap liability has been classified in Level 2 of the fair value hierarchy.

Mortgage Loans Payable

The Predecessor determines the fair value of its fixed rate debt based on a discounted cash flow analysis using a discount rate that approximates the current borrowing rates for instruments of similar maturities. Based on this, the Predecessor has determined that the fair value of these instruments was $88,500,000 and $35,715,000 as of December 31, 2013 and 2012, respectively. Although the Predecessor has determined that the majority of the inputs used to value its fixed rate debt fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its fixed rate debt utilize Level 3 inputs, such as estimates of current credit spreads. Accordingly, mortgage loans payable have been classified as Level 3 fair value measurements.

The Predecessor estimates the fair value of its variable mortgage loan payable approximates its carrying value due to the variable nature of the debt.

Deferred Costs

Fees and costs paid in the successful negotiation of leases are deferred and amortized on a straight-line basis over the terms of the respective leases. Fees and costs incurred in connection with obtaining financing are deferred and amortized over the term of the related debt obligation.

Accumulated amortization of deferred leasing costs as of December 31, 2013 and 2012 was $953,065 and $509,676 respectively.

Deferred offering costs

Deferred offering costs represent fees and costs directly associated with the offering and related formation transaction. These costs have been paid by an entity under common control. As these costs have not been reimbursed to the entity under common control, the Predecessor has recorded these amounts as an owners’ contribution to equity.

Segment Reporting

The Predecessor operates in one industry segment, commercial real estate.

New Accounting Pronouncements

During February 2013, the FASB issued ASU No. 2013-02, “Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income.” ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. ASU is effective prospectively for reporting periods beginning after December 15, 2012. The adoption of ASU 2013-02 did not have a material impact on the Company’s financial condition or results of operations.

Rents_Receivable_Net

Rents Receivable, Net	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Rents Receivable, Net	'
	3. Rents Receivable, Net
	The Company’s rents receivable is comprised of the following components:
		December 31, 2013		December 31, 2012
	Billed receivables	$	343,785	$	268,870
	Straight-line receivables		4,336,499		2,006,904
	Total rents receivable	$	4,680,284	$	2,275,774
	Substantially all of these assets have been pledged as collateral for mortgage loans payable (see Note 7).

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisition	'
	4. Acquisition
	During the years ended December 31, 2013 and 2012, the Predecessor acquired the following properties:
	Property	Date				Percentage
		Acquired				Owned
	Central Fairwinds		May 2012				90%
	Corporate Parkway		May 2013				100
	Washington Group Plaza		June 2013				89.9
	The above acquisitions have been accounted for as business combinations.
	The following table summarizes the Company’s allocations of the purchase prices of assets acquired and liabilities assumed during the years ended December 31, 2013 and 2012:
		Washington				Corporate			Total
		Group Plaza				Parkway			December 31,
									2013
	Land	$	12,748,491			$	3,756,354		$	16,504,845
	Building and improvements		17,999,655				18,579,817			36,579,472
	Tenant improvements		2,717,043				1,909,302			4,626,345
	Prepaid expenses and other assets		217,170				5,353			222,523
	Deferred leasing costs		12,492				—			12,492
	Acquired intangible assets		10,470,441				4,149,174			14,619,615
	Accounts payable and accrued liabilities		(1,233,521	)			—			(1,233,521	)
	Acquired intangible liabilities		(17,936	)			—			(17,936	)
	Total consideration	$	42,913,835			$	28,400,000		$	71,313,835
				December 31, 2012
				Central Fairwinds
	Land			$	1,746,721
	Building and improvements				9,073,245
	Tenant improvements				677,821
	Prepaid expenses and other assets				57,417
	Acquired intangible assets				2,644,796
	Accounts payable and accrued liabilities				(311,719	)
	Total consideration			$	13,888,281
	The Predecessor recognized expenses relating to acquisition of $1,479,292, and $212,765 for the years ended December 31, 2013 and 2012, respectively.
	The operating results of the acquired properties since the dates of their respective acquisition have been included in the Predecessor’s combined financial statements. The following table presents the results of the properties operations since the date of acquisition on a stand-alone basis:
		December 31, 2013				December 31, 2012
	Revenues
	Central Fairwinds	$	2,931,901			$	2,608,056
	Corporate Parkway		2,009,568				—
	Washington Group Plaza		5,145,114				—
	Operating expenses, excluding depreciation and amortization
	Central Fairwinds	$	1,828,527			$	1,536,172
	Corporate Parkway		1,084,575				—
	Washington Group Plaza		2,675,233				—
	Depreciation and amortization
	Central Fairwinds	$	1,042,786			$	753,025
	Corporate Parkway		1,496,738				—
	Washington Group Plaza		2,313,444				—
	Income (loss) from operations
	Central Fairwinds	$	60,588			$	318,859
	Corporate Parkway		(571,745	)			—
	Washington Group Plaza		156,437				—
	The following table presents the Corporate Parkway and Washington Group Plaza’s unaudited revenues and income from continuing operations on a pro forma basis as if the Predecessor had completed the acquisition of the properties as of January 1, 2012:
		December 31,				December 31,
		2013				2012
		(Unaudited)				(Unaudited)
	Total revenues as reported by the Predecessor	$	20,490,578			$	11,516,458
	Plus: Corporate Parkway		1,130,919				3,013,034
	Washington Group Plaza		3,856,118				8,983,513
	Proforma total revenues	$	25,477,615			$	23,513,005
	Total operating income as reported by the Predecessor	$	2,771,005			$	1,298,429
	Property acquisition costs		—				(1,479,292	)
	Plus: Corporate Parkway		211,499				587,805
	Plus: Washington Group Plaza		841,506				331,962
	Proforma operating income	$	3,824,010			$	738,904
	No pro forma information is provided for Central Fairwinds for the year ended December 31, 2012 due to the lack of information provided by the seller.

Lease_Intangibles

Lease Intangibles	9 Months Ended																						12 Months Ended
	Sep. 30, 2014																						Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'																						'
Lease Intangibles	'																						'
	4. Lease Intangibles																						5. Lease Intangibles
	Lease intangibles and the value of assumed lease obligations as of September 30, 2014 and December 31, 2013 were comprised as follows:																						Lease intangibles and the value of assumed lease obligations as of December 31, 2013, and December 31, 2012 were comprised as follows:
	September 30, 2014	Above			In Place			Leasing			Total			Below			Below			Total			December 31, 2013	Above Market			In Place			Leasing			Total			Below Market			Below Market			Total
		Market			Leases			Commissions						Market			Market							Leases			Leases			Commissions						Leases			Ground Lease
		Leases												Leases			Ground						Cost	$	3,043,030		$	15,731,887		$	5,447,198		$	24,222,115		$	(168,904	)	$	(138,218	)	$	(307,122	)
																	Lease						Accumulated Amortization		(1,306,326	)		(6,733,891	)		(1,781,143	)		(9,821,360	)		123,567			16,209			139,776
	Cost	$	6,980,813		$	22,370,372		$	12,535,456		$	41,886,641		$	(746,219	)	$	(138,218	)	$	(884,437	)
	Accumulated amortization		(3,131,678	)		(8,604,160	)		(3,155,524	)		(14,891,362	)		215,986			19,217			235,203			$	1,736,704		$	8,997,996		$	3,666,055		$	14,400,755		$	(45,337)		$	(122,009)		$	(167,346)
		$	3,849,135		$	13,766,212		$	9,379,932		$	26,995,279		$	(530,233	)	$	(119,001	)	$	(649,234	)
																							December 31, 2012	Above Market			In Place			Leasing			Total			Below Market			Below Market			Total
																								Leases			Leases			Commissions						Leases			Ground Lease
	December 31, 2013	Above			In Place			Leasing			Total			Below			Below			Total			Cost	$	1,839,335		$	6,027,484		$	1,735,686		$	9,602,505		$	(150,968	)	$	(138,218	)	$	(289,186	)
		Market			Leases			Commissions						Market			Market						Accumulated Amortization		(765,985	)		(3,902,265	)		(931,966	)		(5,600,216	)		108,469			12,199			120,668
		Leases												Leases			Ground
																	Lease							$	1,073,350		$	2,125,219		$	803,720		$	4,002,289		$	(42,499	)	$	(126,019	)	$	(168,518	)
	Cost	$	3,043,030		$	14,885,115		$	5,447,198		$	23,375,343		$	(168,904	)	$	(138,218	)	$	(307,122	)
	Accumulated Amortization		(1,306,326	)		(6,536,311	)		(1,781,143	)		(9,623,780	)		123,567			16,209			139,776		The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows:
		$	1,736,704		$	8,348,804		$	3,666,055		$	13,751,563		$	(45,337	)	$	(122,009	)	$	(167,346	)
																								Above Market			In Place			Leasing			Total			Below Market			Below Market			Total
	The Company has adjusted acquired lease intangibles and accounts payable and accrued liabilities as of December 31, 2013 in the amount of $649,192 to conform with the current period presentation as of September 30, 2014. There was no impact to net income resulting from this adjustment.																							Leases			Leases			Commissions						Leases			Ground Lease
	The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows:																						2014	$	579,905		$	3,412,297		$	1,200,127		$	5,192,329		$	(16,454	)	$	(4,011	)	$	(20,465	)
																							2015		543,010			2,580,918			1,137,079			4,261,007			(16,454	)		(4,011	)		(20,465	)
																							2016		315,073			2,454,341			697,689			3,467,103			(9,382	)		(4,011	)		(13,393	)
	2014	$	1,650,514																				2017		145,904			550,440			298,369			994,713			(3,047	)		(4,011	)		(7,058	)
	2015		6,343,804																				2018		79,776			—			170,344			250,120			—			(4,011	)		(4,011	)
	2016		5,860,838																				Thereafter		73,036			—			162,447			235,483			—			(101,954	)		(101,954	)
	2017		3,605,134
	2018		2,430,107																					$	1,736,704		$	8,997,996		$	3,666,055		$	14,400,755		$	(45,337	)	$	(122,009	)	$	(167,346	)
	Thereafter		6,455,648
		$	26,346,045

Investment_in_Unconsolidated_E

Investment in Unconsolidated Entity	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Investment in Unconsolidated Entity	'
	6. Investment in Unconsolidated Entity
	In July 2011, the Predecessor acquired a 42.3% ownership interest in Cherry Creek. The financial information summary of Cherry Creek is presented below:
		December 31,			December 31,
		2013			2012
	Assets:
	Real estate, at cost
	Land	$	21,295,615		$	21,295,615
	Building		14,278,948			14,278,948
	Tenant improvement		5,651,091			5,614,715
			41,225,654			41,189,278
	Accumulated depreciation		(3,910,737	)		(2,300,946	)
	Real estate, net		37,314,917			38,888,332
	Cash and cash equivalents		969,732			236,404
	Restricted cash		58,179			72,369
	Accounts receivable		1,060,297			692,829
	Related party receivable		—			1,463,791
	Deferred costs		45,533			136,597
	Deferred leasing costs, net		1,710,128			—
	Acquired lease intangibles, net		5,599,044			6,713,644
	Prepaid expenses and other assets		56,874			61,026
	Total Assets	$	46,814,704		$	48,264,992
	Liabilities:
	Mortgage loan payable	$	36,000,000		$	36,000,000
	Accounts payable and accrued expenses		293,045			164,632
	Acquired lease intangibles, net		76,424			98,523
	Tenant rent deposits		133,986			133,986
	Other liabilities		—			314,856
	Deferred rent		47,849			—
	Total liabilities		36,551,304			36,711,997
	Members’ Equity		10,263,400			11,552,995
	Total Liabilities & Members Equity	$	46,814,704		$	48,264,992
		Year ended
		December 31,
		2013			2012
	Operating revenues	$	6,710,132		$	6,661,188
	Operating expenses		4,901,802			4,471,733
	Interest		854,689			992,114
	Net income	$	953,641		$	1,197,341
	Amount recorded in equity in income	$	402,913		$	505,877
	The Cherry Creek property is pledged as security for a loan with an outstanding balance of $36 million as of December 31, 2013. Cherry Creek entered into an interest rate swap with a notional amount of $36 million to limit its exposure to fluctuations in the interest rate on this variable rate mortgage and this interest rate swap matured on August 1, 2013.
	The Cherry Creek property was cross collateralized with $12,575,167 of indebtedness as of December 31, 2012. This indebtedness was repaid in December 2013. In addition, Cherry Creek and a related party were both counterparties to an interest rate swap contract with a third party financial institution, and the estimated fair value of this swap was $116,135 as of December 31, 2012. This swap was not recorded in these financial statements, but the Predecessor would have been responsible for making payments under this swap agreement had the other related party not made the required payment. The swap had a notional amount of $9 million with a maturity date of July 22, 2014. This swap was terminated in December 2013.

Mortgage_Loans_Payable

Mortgage Loans Payable	12 Months Ended
	Dec. 31, 2013
Mortgage Loans on Real Estate [Abstract]	'
Mortgage Loans Payable	'
	7. Mortgage Loans Payable
	The following table summarizes the Predecessor’s secured indebtedness as of December 31, 2013 and December 31, 2012:
	Property		December 31,		December 31,		Interest			Maturity
			2013		2012		Rate as of
							December 31,
							2013
	City Center (1)		$	22,333,938	$	19,756,600		6	% (2)		June 2014	(3)
	Central Fairwinds (4)			10,000,000		10,000,000		6.25	%		October 2015
	AmberGlen			23,500,000		23,500,000		6.25	%		Jul-17	(5)
	Corporate Parkway (4)			19,133,333		—		7.25	%		Apr-16	(6)
	Washington Group Plaza (7)			34,949,159		—		3.848	%		Jul-18
	Total		$	109,916,430	$	53,256,600
	All interest rates are fixed interest rates with the exception of City Centre as explained in footnote (2) below.
	(1)	Interest payable monthly plus monthly principal payment of $20,000.
	(2)	Interest rate is equal to a floating rate per annum equal to LIBOR plus 4%, but in no event shall the interest rate be lower than six percent (6%).
	(3)	In November 2013, the Predecessor exercised its option to extend the maturity date of the loan, for a six month period. The Predecessor has one and a half year of additional extension option.
	(4)	Interest only payable monthly, principal due on maturity.
	(5)	The Predecessor has the option to extend the debt to July 2022.
	(6)	With extension option of three consecutive terms of one year.
	(7)	Interest payable monthly plus principal based on 360 months of amortization.
	The scheduled principal repayments of mortgage payable as of December 31, 2013 are as follows:
	2014		$	22,961,366
	2015			10,652,349
	2016			43,307,899
	2017			705,054
	2018			32,289,762
	Thereafter			—
			$	109,916,430

Noncontrolling_Interests

Noncontrolling Interests	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Noncontrolling Interests	'
	8. Noncontrolling Interests
	The following table summarizes the noncontrolling interests as of December 31, 2013 and December 31, 2012:
		December 31, 2013			December 31, 2012
	City Center	$	58,147		$	118,263
	Central Fairwinds		434,810			498,955
	AmberGlen		(707,889	)		(756,760	)
	Washington Group Plaza		1,298,672			—
		$	1,083,740		$	(139,542	)

Related_Party_Transactions

Related Party Transactions	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Related Party Transactions [Abstract]	'	'
Related Party Transactions	'	'
	7. Related Party Transactions	9. Related Party Transactions
	Formation Transactions	Property Management Fees
	The formation transactions were completed on April 21, 2014 through the contribution of the initial properties by Second City Capital Partners II, Limited Partnership, Second City General Partner II, Limited Partnership, Gibralt US, Inc., GCC Amberglen Investments Limited Partnership and Daniel Rapaport (collectively the “Second City Group”). The Second City Group received as consideration for its contribution approximately $19.4 million in cash in accordance with the terms of its contribution agreement to acquire various noncontrolling interests and eliminate economic incentives in the initial properties. Additional payments to the Second City Group included $4.9 million for reimbursement of IPO costs and $1.8 million for working capital. On May 9, 2014, subsequent to the underwriters’ exercise of the overallotment option, net proceeds of $9.1 million was paid to the Second City Group to redeem 479,305 common units and 248,095 common stock.	Four of the properties, City Center, Central Fairwinds, AmberGlen, and Washington Group Plaza engaged related parties to perform asset and property management services for a fee ranging from 1.75% to 3.5% of gross revenue.
	Property Management Fees	In addition to the base property management fee of 1.75%, paid to the related party for property management at Washington Group Plaza, the property manager is also entitled to an additional management fee equal to the greater of 1% of gross revenue or 15% of net operating income in excess of $5.0 million in 2013, $5.5 million in 2014 and $5.6 million in 2015.
	Three of the properties (City Center, Central Fairwinds and AmberGlen) engaged related parties to perform asset and property management services for a fee ranging from 1.75% to 3.5% of gross revenue.	The costs of these services, aggregating $539,460 and $571,420 for the years ended December 31, 2013 and 2012, respectively, were recorded as Property management fees on the accompanying combined statements of operations.
	Prior to the Formation Transactions, the property manager of Washington Group Plaza was also entitled to an additional incentive commission equal to the lesser of (a) 15% of net operating income in excess of $5 million in 2013, $5.45 million in 2014 and $5.6 million in 2015; or (b) 1% of all monthly gross revenue. The asset and management agreement has an initial term of three years and will automatically renew for successive two year periods. This agreement can be terminated by the Company or the property manager upon thirty days prior written notice to the other party.	Deferred and Canadian Offering Costs
	Deferred Offering and Financing Costs	Deferred offering costs and deferred financing costs directly associated with the offering and related formation transactions of $1,830,950 and $125,000 respectively as of December 31, 2013 have been paid by an entity under common control. As these costs have not been reimbursed to the entity under common control, the Predecessor has recorded these amounts as an owners’ contribution to equity.
	Deferred offering and financing costs directly associated with the IPO and Formation Transactions of $4.9 million were reimbursed to Second City Capital Partners II, Limited Partnership, (“Second City”) upon the closing of the IPO.	Canadian offering costs of $1,983,195 were incurred in connection with the potential Canadian public offering, which the Predecessor decided not to file with the Toronto Stock Exchange. These costs were recorded in the combined statement of operations for the year ended December 31, 2013 and have been paid by an entity under common control. As these costs have not been reimbursed to the entity under common control, the Predecessor has recorded these amounts as an owners’ contribution to equity.
		Other professional fees not incremental to the offering of $160,000 have been paid by an entity under common control. As these costs have not been reimbursed to the entity under common control, the Predecessor has recorded these amounts as an owners’ contribution to equity.

Future_Minimum_Rent_Schedule

Future Minimum Rent Schedule	9 Months Ended			12 Months Ended
	Sep. 30, 2014			Dec. 31, 2013
Leases [Abstract]	'			'
Future Minimum Rent Schedule	'			'
	8. Future Minimum Rent Schedule			10. Future Minimum Rent Schedule
	Future minimum lease payments to be received as of September 30, 2014 under noncancellable operating leases for the next five years and thereafter are as follows:			Future minimum lease payments to be received as of December 31, 2013 under noncancellable operating leases for the next five years and thereafter are as follows:
	2014	$	8,532,363	2014	$	22,193,033
	2015		35,048,004	2015		22,367,600
	2016		28,542,171	2016		15,694,478
	2017		20,887,708	2017		8,279,781
	2018		17,401,040	2018		5,056,811
	Thereafter		65,593,200	Thereafter		10,106,308
		$	176,004,486		$	83,698,011
	The above minimum lease payments to be received do not include reimbursements from tenants for certain operating expenses and real estate taxes and do not include early termination payments provided for in certain leases.			The above minimum lease payments to be received do not include reimbursements from tenants for certain operating expenses and real estate taxes and do not include early termination payments provided for in certain leases.
	Two state government tenants currently have the exercisable right to terminate their lease if the state does not appropriate rent in its annual budgets. The Company has determined that the occurrence of the government tenant not appropriating the rent in its annual budget is a remote contingency and accordingly recognizes lease revenue on a straight-line basis over the respective lease term. These tenants represent approximately 44.0% of the Company’s total future minimum lease payments as of September 30, 2014.			One state government tenant has the currently exercisable right to terminate its lease if the state does not appropriate rent in its annual budgets. The Predecessor has determined that the occurrence of the government tenant not appropriating the rent in its annual budget is a remote contingency and accordingly recognizes lease revenue on a straight-line basis over the respective lease term. This tenant represents approximately 7.9% of our total future minimum lease payments as of December 31, 2013.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'	'
Commitments and Contingencies	'	'
	9. Commitments and Contingencies	11. Commitments and Contingencies
	Earn-Out	Property Management Fees
	As part of the Formation Transactions and contribution agreement with respect to the Central Fairwinds property (which is currently approximately 76.0% leased, including committed tenants), the Company is obligated to make additional payments to Second City (each, an “Earn-Out Payment”). Earn-Out Payments are contingent on the property reaching certain specified occupancy levels through new leases to qualified tenants and exceeding a net operating income threshold, which grows annually. Second City will be entitled to receive an Earn-Out Payment (net of the associated leasing costs and inclusive of leasing commissions and tenant improvements/allowances and free rent) as and when the occupancy of Central Fairwinds reaches each of 70%, 80% and 90% (each, an “Earn-Out Threshold”) based on the incremental cash flow generated by new leases and a 7.75% stabilized capitalization rate. The Company will make any additional Earn-Out Payment within 30 days of the end of the Earn-Out Term based on new qualified leases entered into since the achievement of the last Earn-Out Threshold. Earn-Out Payments will be subject to a claw-back if a qualified tenant defaults in the payment of rent and is not replaced with another qualified tenant (see note 6).	In June 2013, Washington Group Plaza engaged a third party to perform asset and management services equal to the greater of 1.75% of gross revenue or $10,000 per month and an incentive commission equal to the lesser of (a) 15% of net operating income in excess of $5 million in 2013, $5.45 million in 2014 and $5.6 million in 2015; or (b) 1% of all monthly gross revenue. The asset and management agreement has an initial term of three years and will automatically renew for successive two year periods.
	As of September 30, 2014, the estimated fair value of the earn-out liability is $8.0 million. The change in fair value for the three months ended September 30, 2014 was $1.0 million.	Fees under this agreement were $90,745 for the year ended December 31, 2013 and are included recorded as management fees on the accompanying combined statements of operations.
	Property Management Fees	Other
	Prior to the Formation Transactions, Washington Group Plaza engaged a related party to perform asset and management services for base and incentive fees as discussed in note 7.	The Predecessor is obligated under certain tenant leases to fund tenant improvements and the expansion of the underlying leased properties.
	Other	Under various federal, state and local laws, ordinances and regulations relating to the protection of the environment, a current or previous owner or operator of real estate may be liable for the cost of removal or remediation of certain hazardous or toxic substances disposed, stored, generated, released, manufactured or discharged from, on, at, under, or in a property. As such, the Predecessor may be potentially liable for costs associated with any potential environmental remediation at any of its’ formerly or currently owned properties.
	The Company is obligated under certain tenant leases to fund tenant improvements and the expansion of the underlying leased properties.	The Predecessor believes that it is in compliance in all material respects with all federal, state and local ordinances and regulations regarding hazardous or toxic substances. Management is not aware of any environmental liability that it believes would have a material adverse impact on the Predecessor’s financial position or results of operations. Management is unaware of any instances in which the Predecessor would incur significant environmental costs if any or all properties were sold, disposed of or abandoned. However, there can be no assurance that any such non-compliance, liability, claim or expenditure will not arise in the future.
		The Predecessor is involved from time to time in lawsuits and other disputes which arise in the ordinary course of business; however, as of December 31, 2013 management believes that these matters will not have a material adverse effect, individually or in the aggregate, on the Predecessor’s financial position or results of operations.
	Under various federal, state and local laws, ordinances and regulations relating to the protection of the environment, a current or previous owner or operator of real estate may be liable for the cost of removal or remediation of certain hazardous or toxic substances disposed, stored, generated, released, manufactured or discharged from, on, at, under, or in a property. As such, the Company may be potentially liable for costs associated with any potential environmental remediation at any of its formerly or currently owned properties.
	The Company believes that it is in compliance in all material respects with all federal, state and local ordinances and regulations regarding hazardous or toxic substances. Management is not aware of any environmental liability that it believes would have a material adverse impact on the Company’s financial position or results of operations. Management is unaware of any instances in which the Company would incur significant environmental costs if any or all properties were sold, disposed of or abandoned. However, there can be no assurance that any such non-compliance, liability, claim or expenditure will not arise in the future.
	The Company is involved from time to time in lawsuits and other disputes which arise in the ordinary course of business. As of September 30, 2014 management believes that these matters will not have a material adverse effect, individually or in the aggregate, on the Company’s financial position or results of operations.

Subsequent_Events

Subsequent Events	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Subsequent Events [Abstract]	'	'
Subsequent Events	'	'
	12. Subsequent Events	12. Subsequent Events
	On November 7, 2014, the Company, through its Operating Partnership, entered into the Agreement of Purchase and Sale to acquire a property in Orlando, Florida for $26.5 million.	On January 2, 2014, the Predecessor acquired the remaining 57.7% ROC-SCCP Cherry Creek I, LP (“Cherry Creek”) it did not already own for $12.02 million. The acquisition was financed through a new $50 million mortgage loan, the proceeds of which were used to repay $36 million of existing debt of Cherry Creek, fund the payment of $12.02 million to the seller, pay $1.2 million of deferred financing costs and $0.8 million in transactions costs. The new $50 million mortgage bears interest at 5% per year and matures in January 2016. In accordance with Financial Accounting Standards Board, or “FASB”, ASC 805-10 “Business Combinations”, the assets and liabilities acquired will be recorded at their fair values on the acquisition date. The purchase price allocation on a preliminary basis, and the resulting impact on the Predecessor’s equity, is as follows:
		Land	$	25,745,012
		Building and improvements		20,144,126
		Lease intangible asset		12,009,085
		Lease intangible liability		(249,409	)
		Net working capital assumed		(815,378	)
				56,833,436
		Mortgage loan obtained in connection with acquisition		(50,000,000	)
		Elimination of investment in Cherry Creek		(4,337,899	)
		Deferred financing costs		1,172,764
		Net increase in equity	$	3,668,301
		As a result of the acquisition, in 2014 the Predecessor will recognize a gain of $4.47 million on its 42.3% equity holding in Cherry Creek. The increase in equity represents the gain on the 42.3% equity investment in Cherry Creek held by the Predecessor less $0.8 million in transaction costs which will be expensed.

Real_Estate_Investments

Real Estate Investments	9 Months Ended
	Sep. 30, 2014
Real Estate [Abstract]	'
Real Estate Investments	'
	3. Real Estate Investments
	Acquisitions
	During the three months and nine months ended September 30, 2014, the Company acquired the following properties:
	Property	Date Acquired		Percentage Owned
	Cherry Creek	January 2014			100	%
	Plaza 25	June 2014			100	%
	Lake Vista Pointe	Jul-14			100	%
	The above acquisitions have been accounted for as business combinations.
	On January 2, 2014, the Predecessor acquired the remaining 57.7% interest it did not already own in ROC-SCCP Cherry Creek I, LP (“Cherry Creek”) for approximately $12.0 million. The acquisition was financed through a new $50 million mortgage loan, the proceeds of which were used to repay $36 million of existing debt of Cherry Creek, fund the payment of $12.0 million to the seller, pay $1.2 million of deferred financing costs and $0.8 million in transactions costs.
	The following table summarizes the Company’s preliminary allocation of the purchase price of assets acquired and liabilities assumed during the three and nine months ended September 30, 2014:
		Cherry Creek
	Land	$	25,745,012
	Buildings and improvements		15,771,277
	Tenant improvements		4,372,849
	Acquired intangible assets		12,009,085
	Accounts payable and other liabilities		(815,378	)
	Lease intangible liability		(249,409	)
	Fair value of assets and liabilities at acquisition	$	56,833,436
	The Company recognized expenses relating to the Cherry Creek acquisition of $806,344 for the three and nine months ended September 30, 2014. A gain of $4.5 million was recognized from the fair value adjustment associated with the Predecessor’s original ownership due to a change in control, calculated as follows:
	Fair value of assets and liabilities acquired	$	56,833,436
	Less existing mortgage in Cherry Creek		(36,000,000	)
			20,833,436
	Less cash paid to seller		(12,020,893	)
	Fair value of 42.3% equity interest		8,812,543
	Carrying value of investment in Cherry Creek		(4,337,899	)
	Gain on existing 42.3% equity interest	$	4,474,644
	On June 4, 2014, the Company, through its Operating Partnership, acquired 100% of CIO Plaza 25 Limited Partnership, a property in Denver, Colorado for $24.3 million. The following table summarizes the Company’s preliminary allocation of the purchase price of assets acquired and liabilities assumed during the three and nine months ended September 30, 2014:
		Plaza 25
	Land	$	1,764,235
	Buildings and improvements		18,486,580
	Tenant improvements		2,075,932
	Acquired intangible assets		2,923,754
	Prepaid expenses and other assets		1,926
	Accounts payable and other liabilities		(640,630	)
	Lease intangible liability		(327,906	)
	Total consideration	$	24,283,891
	On July 18, 2014, the Company, through its Operating Partnership, acquired 100% of CIO Lake Vista Pointe Limited Partnership, a property in Dallas, Texas for $26.2 million. The following table summarizes the Company’s preliminary allocation of the purchase price of assets acquired and liabilities assumed during the three and nine months ended September 30, 2014:
		Lake Vista Pointe
	Land	$	4,115,158
	Buildings and improvements		17,562,157
	Tenant Improvements		2,581,839
	Acquired intangible assets		3,682,828
	Prepaid expenses and other assets		29,610
	Accounts payable and other liabilities		(1,732,801	)
	Total consideration	$	26,238,791
	The operating results of the acquired properties, during the three and nine months ended September 30, 2014, since the date of acquisition have been included in the Company’s condensed consolidated and combined financial statements. The following table represents the results of the properties’ operations since the date of acquisition on a stand-alone basis.
		Three months ended				Nine months ended
		September 30, 2014				September 30, 2014
	Operating revenues	$	3,466,503			$	7,190,976
	Operating expenses		(2,920,995	)			(6,625,117	)
	Interest		(753,974	)			(3,124,948	)
	Net loss before gain on equity investment	$	(208,466	)		$	(2,559,089	)
	The following table presents the unaudited revenues and income from continuing operations for Cherry Creek, Plaza 25 and Lake Vista Pointe on a pro forma basis as if the Predecessor had completed the acquisition of the properties as of January 1, 2013:
		Nine months ended				Nine months ended
		September 30, 2014				September 30, 2013
	Total revenues as reported by City Office REIT, Inc. and Predecessor	$	26,374,089			$	14,625,527
	Plus: Cherry Creek		—				5,186,771
	Plaza 25		1,672,163				2,964,289
	Lake Vista Pointe		1,879,889				2,591,968
	Proforma total revenues	$	29,926,141			$	25,368,555
	Total operating income as reported by the City Office REIT, Inc. and Predecessor	$	2,099,972			$	2,108,319
	Property acquisition costs		1,551,347				(1,551,347	)
	Plus: Cherry Creek		—				527,261
Plaza 25		(91,120	)			(161,531	)
Lake Vista Pointe		289,237				398,246
Proforma operating income	$	3,849,436			$	1,320,948

Debt

Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt	'
	5. Debt
	The following table summarizes the secured indebtedness as of September 30, 2014 and December 31, 2013:
	Property		September 30, 2014		December 31, 2013		Interest Rate as			Maturity
							of
							September 30,
							2014
	Revolving Credit Facility (1)		$	6,400,000	$	—		LIBOR +2.75	%(2)	Apr-16
	AmberGlen Mortgage Loan (3)			25,262,516		—		4.38	%	May-19
	Midland Life Insurance (4)			95,000,000		—		4.34	%	May-21
	Lake Vista Pointe (5)			18,460,000		—		4.28	%	Aug-24
	Washington Group Plaza (5)			34,481,789		34,949,159		3.85	%	Jul-18
	City Center (6)			—		22,333,938		—		June 2014
	Central Fairwinds (7)			—		10,000,000		—		October 2015
	Corporate Parkway (7)			—		19,133,333		—		Apr-16
	AmberGlen (8)			—		23,500,000		—		Jul-17
	Total		$	179,604,305	$	109,916,430
	All interest rates are fixed interest rates with the exception of the revolving credit facility (“Revolving Credit Facility”) as explained in footnote 1 below.
	(1)	The Revolving Credit Facility currently has $30 million authorized with $26.4 million available immediately. In addition, the Revolving Credit Facility has an accordion feature that will permit us to borrow up to $150 million, subject to additional collateral availability and lender approval. The Revolving Credit Facility bears an interest rate of LIBOR plus 2.75% and requires the Company to maintain a fixed charge coverage ratio of no less than 1.60x. The Revolving Credit Facility is cross-collateralized by Central Fairwinds and Plaza 25.
	(2)	As of September 30, 2014, the 3 Month LIBOR rate was 0.27%.
	(3)	Following the Formation Transactions, on April 29, 2014, we entered into a new mortgage loan in relation to the AmberGlen property for $25.4 million. The loan bears an interest rate of 4.38% and matures on May 1, 2019. The Company is required to maintain a minimum net worth of $25 million and a minimum liquidity of $2 million.
	(4)	The loan is cross-collateralized by Corporate Parkway, Cherry Creek and City Center. Interest only until February 2016 then interest payable monthly plus principal based on 360 months of amortization. The loan bears a fixed interest rate of 4.34% and matures on May 6, 2021.
	(5)	Interest payable monthly plus principal based on 360 months of amortization.
	(6)	Interest payable monthly plus monthly principal payment of $20,000. This loan was extinguished on April 21, 2014 in relation to the Formation Transaction.
	(7)	Interest only payable monthly, principal due on maturity. This loan was extinguished on April 21, 2014 in relation to the Formation Transactions.
	(8)	This AmberGlen loan was refinanced on April 29, 2014 with the new AmberGlen loan discussed in footnote (3) above.
	On June 13, 2014, in connection with the addition of Plaza 25 as an additional collateral property, the Company, through its Operating Partnership, exercised a portion of the accordion feature of the Revolving Credit Facility and entered into an amendment to the credit agreement, thereby increasing the aggregate principal maximum amount available for borrowing under the Revolving Credit Facility to $30 million.
	The scheduled principal repayments of mortgage payable as of September 30, 2014 are as follows:
	2014		$	259,621
	2015			1,065,209
	2016			8,420,590
	2017			2,873,753
	2018			34,836,409
	Thereafter			132,148,723
			$	179,604,305

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2014

Investments, All Other Investments [Abstract]

'

Fair Value of Financial Instruments

'

6. Fair Value of Financial Instruments

Fair value measurements are based on assumptions that market participants would use in pricing an asset or a liability. The hierarchy for inputs used in measuring fair value is as follows:

Level 1 Inputs – quoted prices in active markets for identical assets or liabilities

Level 2 Inputs – observable inputs other than quoted prices in active markets for identical assets and liabilities

Level 3 Inputs – unobservable inputs

Financial assets whose fair values are measured on a recurring basis consist only of an interest rate swap. The fair value of the interest rate swap is calculated based on Level 2 inputs.

As of September 30, 2014, the Company did not have any hedges or derivatives. As of December 31, 2013, the Predecessor had not designated its interest rate swap as a hedge. This derivative was not speculative and was used to manage the Predecessor’s exposure to interest rate movements and other identified risks, but the Predecessor elected not to designate these instruments in hedging relationships based on the provisions in ASC 815-10. The changes in fair value of derivatives not designated in hedging relationships have been recognized in earnings. The interest rate swap was subsequently terminated upon completion of the IPO. The interest rate derivative outstanding as at December 31, 2013 was as follows:

Property

Type of

Notional

Maturity

Effective

Fair Value as of

Instrument

amount

date

rate

December 31, 2013

City Center

Interest Rate Swap

$

15,000,000

—

6

%

$

—

The fair value of the Central Fairwinds earn-out (note 9) was derived by making assumptions on the timing of the lease up of vacant space and the net effective rents of those new leases and then applying an 8% discount rate to the resulting cash-flows to obtain a present value. The earn-out valuation assumes that approximately 17,000 square feet of additional leasing is completed between the date of the valuation and the end of the calculation period which would take the existing occupancy from 76% signed and committed at September 30, 2014 to 89% by September 2016 and stabilized at that level thereafter. The average net effective rent and incremental operating costs per square foot is assumed to be $14 and $4 respectively.

As of September 30, 2014, the estimated fair value of the earn-out liability is $8.0 million. The change in fair value for the three months ended September 30, 2014 was $1.0 million.

Level 3 sensitivity analysis:

The Company applies judgment in determining unobservable inputs used to calculate the fair value of Level 3 instruments. Level 3 instruments held by the Company include the earn-out. The unobservable inputs used in the valuation of the earn-out primarily include the net effective rent assumptions. A sensitivity analysis has been performed to determine the potential gain or loss by varying the significant unobservable inputs by increasing or decreasing them by 10%. The impact of applying these other reasonably possible inputs is a potential loss of $0.1 million and a potential gain of $0.1 million. This potential gain or loss would be recorded through profit and loss.

Fair Values of Financial Instruments Not Carried at Fair Value

With the exception of fixed rate mortgage loans payable, the carrying amounts of the Predecessor’s financial instruments approximate their fair value. The Predecessor determines the fair value of its fixed rate mortgage loan payable based on a discounted cash flow analysis using a discount rate that approximates the current borrowing rates for instruments of similar maturities. Based on this, the Company has determined that the fair value of these instruments was $172,700,000 and $88,500,000 as of September 30, 2014 and December 31, 2013, respectively. Although the Predecessor has determined the majority of the inputs used to value its fixed rate debt fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its fixed rate debt utilize Level 3 inputs, such as estimates of current credit spreads. Accordingly, mortgage loans payable have been classified as Level 3 fair value measurements.

Earnings_per_Share

Earnings per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings per Share	'
	10. Earnings per Share
	The following table shows the amounts used in computing the Company’s basic and diluted earnings per share. As of the three and nine months ended September 30, 2014, there is no dilution to earnings per share.
		Three Months Ended			Nine Months Ended
		September 30, 2014			September 30, 2014
	Numerator for loss per share – basic and diluted
	Net loss	$	(2,373,873	)	$	(3,237,974	)
	Less: Net loss attributable to noncontrolling interests in properties		(87,296	)		(8,326	)
	Less: Net loss attributable to Predecessor		—			(1,973,197	)
	Less: Net loss attributable to Operating Partnership unitholders’ noncontrolling interests		693,971			1,508,097
	Numerator for loss per share – basic and diluted	$	(1,767,198	)	$	(3,711,400	)
	Denominator for loss per share – basic and diluted		8,192,915			8,133,940
	Basic and diluted loss per share	$	(0.22	)	$	(0.46	)

Stockholders_Equity

Stockholder's Equity	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Stockholder's Equity	'
	11. Stockholder’s Equity
	The Company issued 5,800,000 shares in conjunction with the IPO resulting in net proceeds of $63.4 million after deducting the underwriters’ discount and offering expenses. The underwriters of the IPO exercised their overallotment option to purchase an additional 782,150 shares of the Company’s common stock resulting in additional net proceeds to us of $9.1 million after deducting underwriting discounts.
	Noncontrolling Interests
	Noncontrolling interests in the Company represent common units of the Operating Partnership held by the Predecessor’s prior investors. Noncontrolling interests consisted of 3,251,904 Operating Partnership units and represented approximately 28.4% of the Operating Partnership as of September 30, 2014. Operating Partnership units and shares of common stock have essentially the same economic characteristics, as they share equally in the total net income or loss distributions of the Operating Partnership. Beginning on or after the date which is 12 months after the later of the completion of this offering or the date on which a person first became a holder of common units, each limited partner and assignees of limited partners will have the right, subject to the terms and conditions set forth in the partnership agreement, to require the Operating Partnership to redeem all or a portion of the common units held by such limited partner or assignee in exchange for a cash amount per common unit equal to the value of one share of common stock, determined in accordance with and subject to adjustment under the partnership agreement. The Company has the sole option at its discretion to redeem the common units by issuing common stock on a one-for-one basis. The Operating Partnership unitholders are entitled to share in cash distributions from the Operating Partnership in proportion to its percentage ownership of common units.
	Restricted Stock Units
	The Company has an equity incentive plan (“Equity Incentive Plan”) for certain officers, directors, advisors and personnel, and, with approval of the board of directors, for subsidiaries, the Advisor and their respective affiliates. The Equity Incentive Plan provides for grants of restricted common stock, restricted stock units, phantom shares, stock options, dividend equivalent rights and other equity-based awards (including LTIP Units), subject to the total number of shares available for issuance under the plan. The Equity Incentive Plan is administered by the compensation committee of the board of directors (the “plan administrator”).
	The maximum number of shares of common stock that may be issued under the Equity Incentive Plan is 1,263,580 shares. To the extent an award granted under the Equity Incentive Plan expires or terminates, the shares subject to any portion of the award that expires or terminates without having been exercised or paid, as the case may be, will again become available for the issuance of additional awards.
	On April 21, 2014, 352,272 restricted stock units (“RSUs”) were granted to the Company’s executive officers and one of the directors at a grant date fair value of $12.50 totaling $4.4 million. During the three months ended September 30, 2014 an additional 30,100 RSUs were granted to directors and non-executive employees of the Advisor. The awards will vest in three equal, annual installments on each of the first three anniversaries of the date of grant. For the three and nine months ended September 30, 2014, the Company recognized net compensation expense of $0.4 million and $0.7 million respectively related to the RSU’s.
	A RSU award represents the right to receive shares of the Company’s common stock in the future, after the applicable vesting criteria, determined by the plan administrator, has been satisfied. The holder of an award of RSU has no rights as a stockholder until shares of common stock are issued in settlement of vested restricted stock units. The plan administrator may provide for a grant of dividend equivalent rights in connection with the grant of RSU; provided, however, that if the restricted stock units do not vest solely upon satisfaction of continued employment or service, any payment in respect to the related dividend equivalent rights will be held by the Company and paid when, and only to the extent that, the related RSU vest.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)

9 Months Ended

12 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Accounting Policies [Abstract]

'

'

Basis of Preparation

'

'

Basis of Preparation and Summary of Significant Accounting Policies

Basis of Preparation

The accompanying condensed consolidated and combined financial statements were prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and include the financial position and results of operations of the Company, the Operating Partnership and its wholly owned subsidiaries. All significant intercompany transactions and balances have been eliminated on consolidation.

The Predecessor represents a combination of certain entities holding interests in real estate that are commonly controlled. Due to their common control, the financial statements of the separate entities which own the properties are presented on a combined basis.

The Predecessor represents a combination of certain entities holding interests in real estate that were commonly controlled prior to the Formation Transactions. Due to their common control, the financial statements of the separate entities which own the properties are presented on a combined basis in the Predecessor financial statements.

The accompanying combined financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). All significant intercompany balances and transactions have been eliminated in combination.

The accompanying condensed consolidated and combined financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”). All significant intercompany balances and transactions have been eliminated on combination.

The information furnished in the accompanying condensed consolidated and combined financial statements reflects all adjustments that, in the opinion of management, are necessary for a fair presentation of the aforementioned condensed consolidated and combined financial statements for the interim periods. Operating results for the three and nine months ended September 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014. These interim financial statements should be read in conjunction with the audited combined financial statements of the Predecessor for the year ended December 31, 2013, included in the Company’s final prospectus dated April 14, 2014.

Variable interest entities (“VIE”) are accounted for within the scope of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 810, “Consolidation” and are required to be consolidated by their primary beneficiary. The primary beneficiary of a variable interest entity is the enterprise that has the power to direct the activities that most significantly impact the variable interest entity’s economic performance and the obligation to absorb losses or the right to receive benefits of the variable interest entity that could be significant to the variable interest entity. Management has evaluated the applicability of ASC Topic 810 to its investments in Cherry Creek and determined that this entity is not a variable interest entity and that the Predecessor is not the primary beneficiary and, therefore, consolidation of this investment is not required. This investment is accounted for using the equity method of accounting.

Noncontrolling Interest

'

'

Noncontrolling Interests

Noncontrolling Interest

Upon completion of the IPO and Formation Transactions and exercise of the underwriters’ overallotment option, the Operating Partnership issued 3,251,904 common units of limited partnership interest to the Predecessor’s prior investors as partial consideration for the contribution of their interest in the Predecessor to the Operating Partnership. Noncontrolling interest in the Company represents common units of the Operating Partnership held by the Predecessor’s prior investors.

The Predecessor follows the provisions pertaining to noncontrolling interests of ASC Topic 810. A noncontrolling interest is the portion of equity in a subsidiary not attributable, directly or indirectly, to a parent. Among other matters, the noncontrolling interest standards require that noncontrolling interests be reported as part of equity in the combined balance sheet (separately from the controlling interest’s equity). The noncontrolling interest standards also require companies to disclose the changes in the noncontrolling interest in the statement of equity or in a separate note to the financial statements; and require that net income include earnings attributable to the noncontrolling interest with disclosure on the face of the statement of operations of the amounts attributable to the parent and to the noncontrolling interest.

As of September 30, 2014, the Company held a 71.6% interest in the Operating Partnership. As the sole general partner and the majority interest holder, the Company consolidates the financial position and results of operations of the Operating Partnership.

Use of Estimates

'

'

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the combined financial statements and the reported amounts of revenues and expenses during the period. Such estimates are based on management’s best judgment, after considering past, current and expected events and economic conditions. Actual results could differ from management’s estimates.

Management has made a number of significant estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses to prepare these combined financial statements in conformity with GAAP. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management adjusts such estimates when facts and circumstances dictate. The most significant estimates made include the recoverability of accounts receivable, allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed, the determination of VIEs and which entities should be consolidated, the determination of impairment of long-lived assets, loans receivable and equity method investments, valuation of derivative financial instruments and the useful lives of long-lived assets. Actual results could differ materially from those estimates.

Cash and Cash Equivalents

'

'

Cash and Cash Equivalents

Cash and cash equivalents include unrestricted cash and short-term investments with a maturity date of less than three months when acquired.

Restricted Cash

'

'

Restricted Cash

Restricted cash consists of cash held in escrow by lenders pursuant to certain lender agreements.

Rent Receivable, Net

'

'

Rent Receivable, Net

The Predecessor continuously monitors collections from tenants and makes a provision for estimated losses based upon historical experience and any specific tenant collection issues that the Predecessor has identified. As of December 31, 2013 and 2012, the Predecessor’s allowance for doubtful accounts was not significant.

Business Combinations

'

'

Business Combinations

Business Combinations

The fair value of the real estate acquired, which includes the impact of fair value adjustments for assumed mortgage debt related to property acquisitions, is allocated to the acquired tangible assets, consisting of land, buildings and improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in-place leases and value of tenant relationships, based in each case on their fair values. Acquisition costs are expensed as incurred in the accompanying combined statements of operations. Also, noncontrolling interests acquired are recorded at estimated fair market value.

The fair value of the real estate acquired, which includes the impact of fair value adjustments for assumed mortgage debt related to property acquisitions, is allocated to the acquired tangible assets, consisting of land, building and improvements and identified intangible assets and liabilities, consisting of the value of above-market and below-market leases, other value of in place leases and value of tenant relationships, based in each case on their fair values. Acquisition costs are expensed as incurred in the accompanying combined statements of operations. Also, noncontrolling interests acquired are recorded at estimated fair market value.

The fair value of the tangible assets of an acquired property (which includes land, buildings and improvements and fixtures and equipment) is determined by valuing the property as if it were vacant. The “as-if-vacant” value is then allocated to land and buildings and improvements based on management’s determination of relative fair values of these assets. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions.

The fair value of the tangible assets of an acquired property (which includes land, building and improvements and fixtures and equipment) is determined by valuing the property as if it were vacant. The “as-if-vacant” value is then allocated to land and building and improvements based on management’s determination of relative fair values of these assets. Factors considered by management in performing these analyses include an estimate of carrying costs during the expected lease-up periods considering current market conditions and costs to execute similar leases. In estimating carrying costs, management includes real estate taxes, insurance and other operating expenses and estimates of lost rental revenue during the expected lease-up periods based on current market demand. Management also estimates costs to execute similar leases including leasing commissions.

The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place lease rent and management’s estimate of current market rents. Below-market lease intangibles are recorded as part of acquired lease intangibles liability and amortized into rental revenue over the non-cancelable periods and bargain renewal periods of the respective leases. Above-market leases are recorded as part of intangible assets and amortized as a direct charge against rental revenue over the noncancelable portion of the respective leases.

The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place lease rent and management’s estimate of current market rents. Below-market lease intangibles are recorded as part of acquired lease intangibles liability and amortized into rental revenue over the non-cancelable periods and bargain renewal periods of the respective leases. Above-market leases are recorded as part of intangible assets and amortized as a direct charge against rental revenue over the non-cancelable portion of the respective leases.

The fair value of acquired in-place leases are recorded based on the costs management estimates the Company would have incurred to lease the property to the occupancy level of the property at the date of acquisition. Such estimates include the fair value of leasing commissions and legal costs that would be incurred to lease the property to this occupancy level. Additionally, management evaluates the time period over which such occupancy level would be achieved and includes an estimate of the net operating costs incurred during the lease-up period. Acquired in-place leases are amortized on a straight-line basis over the term of the individual leases.

The fair value of acquired in place leases are recorded based on the costs management estimates the Predecessor would have incurred to lease the property to the occupancy level of the property at the date of acquisition. Such estimates include the fair value of leasing commissions and legal costs that would be incurred to lease the property to this occupancy level. Additionally, management evaluates the time period over which such occupancy level would be achieved and includes an estimate of the net operating costs incurred during the lease-up period. Acquired in place leases are amortized on a straight-line basis over the term of the individual leases.

Revenue Recognition

'

'

Revenue Recognition

Revenue Recognition

The Company recognizes lease revenue on a straight-line basis over the term of the lease. Certain leases allow for the tenant to terminate the lease, but the tenant must make a termination payment as stipulated in the lease. If the termination payment is in such an amount that continuation of the lease appears, at the time of lease inception, to be reasonably assured, then the Company recognizes revenue over the term of the lease. The Company has determined that for these leases, the termination payment is in such an amount that continuation of the lease appears, at the time of inception, to be reasonably assured. The Company recognizes lease termination fees as revenue in the period received and writes off unamortized lease-related intangible and other lease-related account balances, provided there are no further Company obligations under the lease. Otherwise, such fees and balances are recognized on a straight-line basis over the remaining obligation period with the termination payments being recorded as a component of rent receivable-deferred or deferred revenue on the consolidated balance sheets.

The Predecessor recognizes lease revenue on a straight-line basis over the term of the lease. Certain leases allow for the tenant to terminate the lease, but the tenant must make a termination payment as stipulated in the lease. If the termination payment is in such an amount that continuation of the lease appears, at the time of lease inception, to be reasonably assured, then the Predecessor recognizes revenue over the term of the lease. The Predecessor has determined that for these leases, the termination payment is in such an amount that continuation of the lease appears, at the time of inception, to be reasonably assured. The Predecessor recognizes lease termination fees as revenue in the period received and writes off unamortized lease-related intangible and other lease-related account balances, provided there are no further Predecessor obligations under the lease. Otherwise, such fees and balances are recognized on a straight-line basis over the remaining obligation period with the termination payments being recorded as a component of rent receivable-deferred or deferred revenue on the combined balance sheets.

If the Company funds tenant improvements and the improvements are deemed to be owned by the Company, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. If the Company determines that the tenant allowances are lease incentives, the Company commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. The lease incentive is recorded as a deferred expense and amortized as a reduction of revenue on a straight-line basis over the respective lease term.

If the Predecessor funds tenant improvements and the improvements are deemed to be owned by the Predecessor, revenue recognition will commence when the improvements are substantially completed and possession or control of the space is turned over to the tenant. If the Predecessor determines that the tenant allowances are lease incentives, the Predecessor commences revenue recognition when possession or control of the space is turned over to the tenant for tenant work to begin. The lease incentive is recorded as a deferred expense and amortized as a reduction of revenue on a straight-line basis over the respective lease term.

Recoveries from tenants for real estate taxes, insurance and other operating expenses are recognized as revenues in the period that the applicable costs are incurred. The Company recognizes differences between estimated recoveries and the final billed amounts in the subsequent year. Final billings to tenants for real estate taxes, insurance and other operating expenses did not vary significantly as compared to the estimated receivable balances.

Recoveries from tenants for real estate taxes, insurance and other operating expenses are recognized as revenues in the period that the applicable costs are incurred. The Predecessor recognizes differences between estimated recoveries and the final billed amounts in the subsequent year. Final billings to tenants for real estate taxes, insurance and other operating expenses did not vary significantly as compared to the estimated receivable balances.

Real Estate Properties

'

'

Real Estate Properties

Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straight-line basis over estimated useful lives of:

Years

Buildings and improvements

29-50

Furniture, fixtures and equipment

7-Apr

Expenditures for maintenance and repairs are charged to operations as incurred.

Impairment of Real Estate Properties

'

'

Impairment of Real Estate Properties

Impairment of Real Estate Properties

Long-lived assets currently in use are reviewed periodically for possible impairment and will be written down to fair value if considered impaired. Long-lived assets, to be disposed of, are written down to the lower of cost or fair value less the estimated cost to sell. The Company reviews its real estate properties for impairment when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. The Company measures and records impairment losses and reduces the carrying value of properties when indicators of impairment are present and the expected undiscounted cash flows related to those properties are less than their carrying amounts. In cases where the Company does not expect to recover its carrying costs on properties held for use, the Company reduces its carrying costs to fair value.

Long-lived assets currently in use are reviewed periodically for possible impairment and will be written down to fair value if considered impaired. Long-lived assets to be disposed of are written down to the lower of cost or fair value less the estimated cost to sell. The Predecessor reviews its real estate properties for impairment when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. The Predecessor measures and records impairment losses and reduces the carrying value of properties when indicators of impairment are present and the expected undiscounted cash flows related to those properties are less than their carrying amounts. In cases where the Predecessor does not expect to recover its carrying costs on properties held for use, the Predecessor reduces its carrying costs to fair value. Management does not believe that the values of its properties within the portfolio are impaired as of December 31, 2013 and 2012.

Investment in Unconsolidated Entity

'

'

Investment in Unconsolidated Entity

The Predecessor accounts for its investment in the unconsolidated entity using the equity method as it does not exercise control over significant asset decisions such as buying, selling or financing nor is it the primary beneficiary under ASC Topic 810, as discussed above. Under the equity method, the Predecessor increases its investment balance by recording its proportionate share of net income and contributions and decreases its investment balance by recording its proportionate share of net loss and distributions.

The Predecessor reviews its investment in unconsolidated entity for other-than-temporary declines in market value when there is an event or a change in circumstances that indicates that the carrying amount may not be recoverable. In this analysis of fair value, the Predecessor uses a discounted cash flow analysis to estimate the fair value of its investment taking into account expected cash flow from operations, holding period and net proceeds from the dispositions of the property. Any decline that is not expected to be recovered is considered other than temporary and an impairment charge is recorded as a reduction in the carrying value of the investment. For the years ended December 31, 2013 and 2012, there were no impairment charges related to the Predecessor’s investment in unconsolidated entity.

Concentration of Credit Risk

'

'

Concentration of Credit Risk

The Predecessor places its temporary cash investments in high credit financial institutions. However, a portion of temporary cash investments may exceed FDIC insured levels from time to time. The Predecessor has never experienced any losses related to these balances. All of the Predecessor’s noninterest-bearing cash balances were fully insured at December 31, 2012 due to a temporary federal program in effect from December 31, 2010 through December 31, 2012. Under the program, there was no limit to the amount of insurance for eligible accounts. Beginning in 2013, insurance coverage has reverted to $250,000 per depositor at each financial institution, and the Predecessor’s noninterest-bearing cash balances may again exceed FDIC insured limits.

Income Tax

'

'

Income Taxes

Income Tax

The Company intends to elect to be taxed and to continue to operate in a manner that will allow it to qualify as a REIT under the U.S. Internal Revenue Code (the “Code”) commencing with its taxable year ending December 31, 2014. To qualify as a REIT, the Company is required to distribute dividends equal to at least 90% of the REIT taxable income (computed without regard to the dividends paid deduction and net capital gains) to its stockholders, and meet the various other requirements imposed by the Code relating to matters such as operating results, asset holdings, distribution levels and diversity of stock ownership. Provided the Company qualifies for taxation as a REIT, it is generally not subject to U.S. federal corporate-level income tax on the earnings distributed currently to its stockholders. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to U.S. federal and state income tax on its taxable income at regular corporate tax rates and any applicable alternative minimum tax. In addition, the Company may not be able to re-elect as a REIT for the four subsequent taxable years.

For U.S. federal income tax purposes, the Predecessor is treated as a partnership and all items of income and loss are attributable to the individual partner tax returns. Accordingly, no provision for federal income taxes has been made in these combined financial statements. However, the Predecessor is required to pay certain state and local entity level taxes which are expensed as incurred.

For periods prior to the completion of the IPO and the Formation Transactions on April 21, 2014, no provision was made for U.S. federal, state or local income taxes because profits and losses of the Predecessor flowed through to its respective partners, members and shareholders who were individually responsible for reporting such amounts.

The Predecessor applies FASB ASC Topic 740 (“Topic 740”), Income Taxes, in accounting for income tax uncertainties. Topic 740 requires a company to recognize the tax benefits of certain tax positions only when the position is “more likely than not” to be sustained assuming examination by the revenue authorities. The tax benefit recognized is the largest amount of benefit that is greater than 50 percent likely of being realized upon ultimate settlement. Management concluded as of December 31, 2013 and 2012 that the Predecessor did not have any liabilities for any uncertain tax positions. The Predecessor’s tax returns for the prior three years are subject to examination by U.S. federal and state revenue authorities. The Predecessor’s policy is to report any interest and penalties as a component of general and administrative expenses.

For periods subsequent to the completion of the IPO and the Formation Transactions, the taxable REIT subsidiaries are subject to federal, state and local corporate income taxes to the extent there is taxable income.

Derivative Instruments and Hedging Activities

'

'

Derivative Instruments and Hedging Activities

The Predecessor records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on whether the Predecessor has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The Predecessor has not elected to designate any instruments as a hedge under ASC 815-10.

As of December 31, 2013 and 2012, the Predecessor has interest rate cap swaps that are not designated as hedges. These derivatives are not speculative and are used to manage the Predecessor’s exposure to interest rate movements and other identified risks, but the Predecessor has elected not to designate these instruments in hedging relationships based on the provisions in ASC 815-10. The changes in fair value of derivatives not designated in hedging relationships have been recognized in earnings. Summarized below are the interest rate derivatives that were not designated as cash flow hedges and the fair value of all derivative assets and liabilities as of December 31, 2013 and 2012:

Fair Value as of

Property

Type of

Notional

Maturity

Effective rate

December 31, 2013

December 31, 2012

Instrument

amount

date

City Center

Interest Rate Swap

$

15,000,000

June 2014

6

%

$

—

$

3,000

Fair Value of Financial Instruments

'

'

Fair Value of Financial Instruments

ASC 820-10, Fair Value Measurements and Disclosures (“ASC 820-10”) defines fair value, establishes a framework for measuring fair value, and expands disclosures about fair value measurements. ASC 820-10 applies to reported balances that are required or permitted to be measured at fair value under existing accounting pronouncements; accordingly, the standard does not require any new fair value measurements of reported balances.

ASC 820-10 emphasizes that fair value is a market-based measurement, not an entity-specific measurement. Therefore, a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC 820-10 establishes a fair value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Predecessor has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, which is typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Predecessor’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

Cash Equivalents, Restricted Cash, Accounts Receivable, Accounts Payable and Accrued Liabilities

The Predecessor estimates that the fair value approximates carrying value due to the relatively short-term nature of these instruments.

Interest Rate Swap

'

'

Interest Rate Swap

The majority of the inputs used to value the Company’s interest rate swap liability fall within Level 2 of the fair value hierarchy, such as observable market interest rate curves; however, the credit valuation associated with the interest rate swap liability utilizes Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Predecessor and its counterparties. As of December 31, 2013 and 2012, the Predecessor determined that the credit valuation adjustment relative to the overall interest rate swap liability is not significant. As a result, the entire interest rate swap liability has been classified in Level 2 of the fair value hierarchy.

Mortgage Loans Payable

'

'

Mortgage Loans Payable

The Predecessor determines the fair value of its fixed rate debt based on a discounted cash flow analysis using a discount rate that approximates the current borrowing rates for instruments of similar maturities. Based on this, the Predecessor has determined that the fair value of these instruments was $88,500,000 and $35,715,000 as of December 31, 2013 and 2012, respectively. Although the Predecessor has determined that the majority of the inputs used to value its fixed rate debt fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its fixed rate debt utilize Level 3 inputs, such as estimates of current credit spreads. Accordingly, mortgage loans payable have been classified as Level 3 fair value measurements.

The Predecessor estimates the fair value of its variable mortgage loan payable approximates its carrying value due to the variable nature of the debt.

Deferred Costs

'

'

Deferred Costs

Fees and costs paid in the successful negotiation of leases are deferred and amortized on a straight-line basis over the terms of the respective leases. Fees and costs incurred in connection with obtaining financing are deferred and amortized over the term of the related debt obligation.

Accumulated amortization of deferred leasing costs as of December 31, 2013 and 2012 was $953,065 and $509,676 respectively.

Deferred offering costs

'

'

Deferred offering costs

Deferred offering costs represent fees and costs directly associated with the offering and related formation transaction. These costs have been paid by an entity under common control. As these costs have not been reimbursed to the entity under common control, the Predecessor has recorded these amounts as an owners’ contribution to equity.

Segment Reporting

'

'

Segment Reporting

The Predecessor operates in one industry segment, commercial real estate.

New Accounting Pronouncements

'

'

New Accounting Pronouncements

New Accounting Pronouncements

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which creates a new Topic Accounting Standards Codification (Topic 606). The standard is principle-based and provides a five-step model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. This standard is effective for interim or annual periods beginning after December 15, 2016 and allows for either full retrospective or modified retrospective adoption. Early adoption of this standard is not allowed. We are currently evaluating the impact the adoption of Topic 606 will have on our financial statements.

During February 2013, the FASB issued ASU No. 2013-02, “Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income.” ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under GAAP to be reclassified to net income in its entirety in the same reporting period. ASU is effective prospectively for reporting periods beginning after December 15, 2012. The adoption of ASU 2013-02 did not have a material impact on the Company’s financial condition or results of operations.

Real Estate Properties

'

'

Real Estate Properties

Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straightline basis over estimated useful lives of:

Years

Buildings and improvement

29-50

Furniture, fixtures and equipment

7-Apr

Expenditures for maintenance and repairs are charged to operations as incurred.

Offering Costs

'

'

Offering Costs

Costs related to the IPO and Formation Transactions paid by the Company’s Predecessor were reimbursed from the proceeds of the IPO.

Dividends

'

'

Dividends

On May 12, 2014, the Company’s board of directors declared an initial, prorated cash dividend of $0.183 per share for the quarterly period from April 21 2014 through June 30, 2014, which is equivalent to a full quarterly dividend of $0.235. The dividend was payable on July 17, 2014 to stockholders and common unitholders of record on July 3, 2014. The $1.5 million in dividends was paid to stockholders and $0.6 million to common unitholders, totaling $2.1 million.

On September 15, 2014, the Company’s board of directors declared a cash dividend of $0.235 per share for the quarterly period from July 1, 2014 through September 30, 2014. The dividend was payable on October 17, 2014 to stockholders and common unitholders of record on October 3, 2014. Subsequent to September 30, 2014, $1.9 million in dividends was paid to stockholders and $0.8 million to common unitholders, totaling $2.7 million.

Equity-Based Compensation

'

'

Equity-Based Compensation

The Company accounts for equity-based compensation, including shares of restricted stock units, in accordance with ASC Topic 718 Compensation – Stock Compensation, which requires the Company to recognize an expense for the fair value of equity-based awards. The estimated fair value of restricted stock units is amortized over their respective vesting periods. See note 11 for further details.

Earnings per Share

'

'

Earnings per Share

The Company calculates net income per share based upon the weighted average shares outstanding during the period beginning April 2014. Diluted earnings per share is calculated after giving effect to all potential dilutive shares outstanding during the period. There were 3,251,904 potentially dilutive shares outstanding related to the issuance of common units held by noncontrolling interests during the three and nine months ended September 30, 2014. However, the shares were excluded from the computation of diluted shares as their impact would have been anti-dilutive. As a result, the number of diluted outstanding shares was equal to the number of basic outstanding shares.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	9 Months Ended			12 Months Ended
	Sep. 30, 2014			Dec. 31, 2013
Accounting Policies [Abstract]	'			'
Estimated Useful Lives of Properties	'			'
				Depreciation is computed on the straight-line basis over estimated useful lives of:
					Years
				Buildings and improvements	29-50
				Furniture, fixtures and equipment	7-Apr
Schedule of Estimated Useful Lives of Real Estate Properties	'			'
	Real estate properties are stated at cost less accumulated depreciation, except land. Depreciation is computed on the straightline basis over estimated useful lives of:
		Years
	Buildings and improvement		29-50
	Furniture, fixtures and equipment		7-Apr

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Investments, All Other Investments [Abstract]

'

'

Summary of Interest Rate Derivative Not Designated as Cash Flow Hedge

'

'

The interest rate derivative outstanding as at December 31, 2013 was as follows:

Summarized below are the interest rate derivatives that were not designated as cash flow hedges and the fair value of all derivative assets and liabilities as of December 31, 2013 and 2012:

Property

Type of

Notional

Maturity

Effective

Fair Value as of

Fair Value as of

Instrument

amount

date

rate

December 31, 2013

Property

Type of

Notional

Maturity

Effective rate

December 31, 2013

December 31, 2012

City Center

Interest Rate Swap

$

15,000,000

—

6

%

$

—

Instrument

amount

date

City Center

Interest Rate Swap

$

15,000,000

June 2014

6

%

$

—

$

3,000

Rents_Receivable_Net_Tables

Rents Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Rents Receivable	'
	The Company’s rents receivable is comprised of the following components:
		December 31, 2013		December 31, 2012
	Billed receivables	$	343,785	$	268,870
	Straight-line receivables		4,336,499		2,006,904
	Total rents receivable	$	4,680,284	$	2,275,774

Acquisition_Tables

Acquisition (Tables)	9 Months Ended								12 Months Ended
	Sep. 30, 2014								Dec. 31, 2013
Predecessor Acquired Properties	'								'
	During the three months and nine months ended September 30, 2014, the Company acquired the following properties:								During the years ended December 31, 2013 and 2012, the Predecessor acquired the following properties:
	Property	Date Acquired		Percentage Owned					Property	Date				Percentage
	Cherry Creek	January 2014			100	%				Acquired				Owned
	Plaza 25	June 2014			100	%			Central Fairwinds		May 2012				90%
	Lake Vista Pointe	Jul-14			100	%			Corporate Parkway		May 2013				100
									Washington Group Plaza		June 2013				89.9
Allocations of Purchase Prices of Assets Acquired And Liabilities Assumed	'								'
									The following table summarizes the Company’s allocations of the purchase prices of assets acquired and liabilities assumed during the years ended December 31, 2013 and 2012:
										Washington				Corporate			Total
										Group Plaza				Parkway			December 31,
																	2013
									Land	$	12,748,491			$	3,756,354		$	16,504,845
									Building and improvements		17,999,655				18,579,817			36,579,472
									Tenant improvements		2,717,043				1,909,302			4,626,345
									Prepaid expenses and other assets		217,170				5,353			222,523
									Deferred leasing costs		12,492				—			12,492
									Acquired intangible assets		10,470,441				4,149,174			14,619,615
									Accounts payable and accrued liabilities		(1,233,521	)			—			(1,233,521	)
									Acquired intangible liabilities		(17,936	)			—			(17,936	)
									Total consideration	$	42,913,835			$	28,400,000		$	71,313,835
												December 31, 2012
												Central Fairwinds
									Land			$	1,746,721
									Building and improvements				9,073,245
									Tenant improvements				677,821
									Prepaid expenses and other assets				57,417
									Acquired intangible assets				2,644,796
									Accounts payable and accrued liabilities				(311,719	)
									Total consideration			$	13,888,281
Results of Properties Operations Since Date of Acquisition on Stand-alone Basis	'								'
	The Company recognized expenses relating to the Cherry Creek acquisition of $806,344 for the three and nine months ended September 30, 2014. A gain of $4.5 million was recognized from the fair value adjustment associated with the Predecessor’s original ownership due to a change in control, calculated as follows:								The following table presents the results of the properties operations since the date of acquisition on a stand-alone basis:
	Fair value of assets and liabilities acquired	$	56,833,436							December 31, 2013				December 31, 2012
	Less existing mortgage in Cherry Creek		(36,000,000	)					Revenues
									Central Fairwinds	$	2,931,901			$	2,608,056
			20,833,436						Corporate Parkway		2,009,568				—
	Less cash paid to seller		(12,020,893	)					Washington Group Plaza		5,145,114				—
	Fair value of 42.3% equity interest		8,812,543						Operating expenses, excluding depreciation and amortization
	Carrying value of investment in Cherry Creek		(4,337,899	)					Central Fairwinds	$	1,828,527			$	1,536,172
									Corporate Parkway		1,084,575				—
	Gain on existing 42.3% equity interest	$	4,474,644						Washington Group Plaza		2,675,233				—
									Depreciation and amortization
									Central Fairwinds	$	1,042,786			$	753,025
									Corporate Parkway		1,496,738				—
									Washington Group Plaza		2,313,444				—
									Income (loss) from operations
									Central Fairwinds	$	60,588			$	318,859
									Corporate Parkway		(571,745	)			—
									Washington Group Plaza		156,437				—
Schedule of Business Acquisition Pro Forma Results of Operations	'								'
	The following table presents the unaudited revenues and income from continuing operations for Cherry Creek, Plaza 25 and Lake Vista Pointe on a pro forma basis as if the Predecessor had completed the acquisition of the properties as of January 1, 2013:								The following table presents the Corporate Parkway and Washington Group Plaza’s unaudited revenues and income from continuing operations on a pro forma basis as if the Predecessor had completed the acquisition of the properties as of January 1, 2012:
		Nine months ended				Nine months ended				December 31,				December 31,
		September 30, 2014				September 30, 2013				2013				2012
	Total revenues as reported by City Office REIT, Inc. and Predecessor	$	26,374,089			$	14,625,527			(Unaudited)				(Unaudited)
	Plus: Cherry Creek		—				5,186,771		Total revenues as reported by the Predecessor	$	20,490,578			$	11,516,458
	Plaza 25		1,672,163				2,964,289		Plus: Corporate Parkway		1,130,919				3,013,034
	Lake Vista Pointe		1,879,889				2,591,968		Washington Group Plaza		3,856,118				8,983,513
	Proforma total revenues	$	29,926,141			$	25,368,555		Proforma total revenues	$	25,477,615			$	23,513,005
	Total operating income as reported by the City Office REIT, Inc. and Predecessor	$	2,099,972			$	2,108,319
	Property acquisition costs		1,551,347				(1,551,347	)	Total operating income as reported by the Predecessor	$	2,771,005			$	1,298,429
	Plus: Cherry Creek		—				527,261		Property acquisition costs		—				(1,479,292	)
	Plaza 25		(91,120	)			(161,531	)	Plus: Corporate Parkway		211,499				587,805
	Lake Vista Pointe		289,237				398,246		Plus: Washington Group Plaza		841,506				331,962
	Proforma operating income	$	3,849,436			$	1,320,948		Proforma operating income	$	3,824,010			$	738,904
Cherry Creek [Member]	'								'
Allocations of Purchase Prices of Assets Acquired And Liabilities Assumed	'								'
	The following table summarizes the Company’s preliminary allocation of the purchase price of assets acquired and liabilities assumed during the three and nine months ended September 30, 2014:
		Cherry Creek
	Land	$	25,745,012
	Buildings and improvements		15,771,277
	Tenant improvements		4,372,849
	Acquired intangible assets		12,009,085
	Accounts payable and other liabilities		(815,378	)
	Lease intangible liability		(249,409	)
	Fair value of assets and liabilities at acquisition	$	56,833,436
Plaza 25 [Member]	'								'
Allocations of Purchase Prices of Assets Acquired And Liabilities Assumed	'								'
	The following table summarizes the Company’s preliminary allocation of the purchase price of assets acquired and liabilities assumed during the three and nine months ended September 30, 2014:
		Plaza 25
	Land	$	1,764,235
	Buildings and improvements		18,486,580
	Tenant improvements		2,075,932
	Acquired intangible assets		2,923,754
	Prepaid expenses and other assets		1,926
	Accounts payable and other liabilities		(640,630	)
	Lease intangible liability		(327,906	)
	Total consideration	$	24,283,891
Lake Vista Pointe [Member]	'								'
Allocations of Purchase Prices of Assets Acquired And Liabilities Assumed	'								'
	The following table summarizes the Company’s preliminary allocation of the purchase price of assets acquired and liabilities assumed during the three and nine months ended September 30, 2014:
		Lake Vista Pointe
	Land	$	4,115,158
	Buildings and improvements		17,562,157
	Tenant Improvements		2,581,839
	Acquired intangible assets		3,682,828
	Prepaid expenses and other assets		29,610
	Accounts payable and other liabilities		(1,732,801	)
	Total consideration	$	26,238,791

Lease_Intangibles_Tables

Lease Intangibles (Tables)	9 Months Ended																						12 Months Ended
	Sep. 30, 2014																						Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'																						'
Schedule of Lease Intangibles and Value of Assumed Lease Obligations	'																						'
	Lease intangibles and the value of assumed lease obligations as of September 30, 2014 and December 31, 2013 were comprised as follows:																						Lease intangibles and the value of assumed lease obligations as of December 31, 2013, and December 31, 2012 were comprised as follows:
	September 30, 2014	Above			In Place			Leasing			Total			Below			Below			Total			December 31, 2013	Above Market			In Place			Leasing			Total			Below Market			Below Market			Total
		Market			Leases			Commissions						Market			Market							Leases			Leases			Commissions						Leases			Ground Lease
		Leases												Leases			Ground						Cost	$	3,043,030		$	15,731,887		$	5,447,198		$	24,222,115		$	(168,904	)	$	(138,218	)	$	(307,122	)
																	Lease						Accumulated Amortization		(1,306,326	)		(6,733,891	)		(1,781,143	)		(9,821,360	)		123,567			16,209			139,776
	Cost	$	6,980,813		$	22,370,372		$	12,535,456		$	41,886,641		$	(746,219	)	$	(138,218	)	$	(884,437	)
	Accumulated amortization		(3,131,678	)		(8,604,160	)		(3,155,524	)		(14,891,362	)		215,986			19,217			235,203			$	1,736,704		$	8,997,996		$	3,666,055		$	14,400,755		$	(45,337)		$	(122,009)		$	(167,346)
		$	3,849,135		$	13,766,212		$	9,379,932		$	26,995,279		$	(530,233	)	$	(119,001	)	$	(649,234	)
																							December 31, 2012	Above Market			In Place			Leasing			Total			Below Market			Below Market			Total
																								Leases			Leases			Commissions						Leases			Ground Lease
	December 31, 2013	Above			In Place			Leasing			Total			Below			Below			Total			Cost	$	1,839,335		$	6,027,484		$	1,735,686		$	9,602,505		$	(150,968	)	$	(138,218	)	$	(289,186	)
		Market			Leases			Commissions						Market			Market						Accumulated Amortization		(765,985	)		(3,902,265	)		(931,966	)		(5,600,216	)		108,469			12,199			120,668
		Leases												Leases			Ground
																	Lease							$	1,073,350		$	2,125,219		$	803,720		$	4,002,289		$	(42,499	)	$	(126,019	)	$	(168,518	)
	Cost	$	3,043,030		$	14,885,115		$	5,447,198		$	23,375,343		$	(168,904	)	$	(138,218	)	$	(307,122	)
	Accumulated Amortization		(1,306,326	)		(6,536,311	)		(1,781,143	)		(9,623,780	)		123,567			16,209			139,776
		$	1,736,704		$	8,348,804		$	3,666,055		$	13,751,563		$	(45,337	)	$	(122,009	)	$	(167,346	)
Estimated Aggregate Amortization Expense for Lease Intangibles	'																						'
	The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows:																						The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows:
	2014	$	1,650,514																					Above Market			In Place			Leasing			Total			Below Market			Below Market			Total
	2015		6,343,804																					Leases			Leases			Commissions						Leases			Ground Lease
	2016		5,860,838																				2014	$	579,905		$	3,412,297		$	1,200,127		$	5,192,329		$	(16,454	)	$	(4,011	)	$	(20,465	)
	2017		3,605,134																				2015		543,010			2,580,918			1,137,079			4,261,007			(16,454	)		(4,011	)		(20,465	)
	2018		2,430,107																				2016		315,073			2,454,341			697,689			3,467,103			(9,382	)		(4,011	)		(13,393	)
	Thereafter		6,455,648																				2017		145,904			550,440			298,369			994,713			(3,047	)		(4,011	)		(7,058	)
																							2018		79,776			—			170,344			250,120			—			(4,011	)		(4,011	)
		$	26,346,045																				Thereafter		73,036			—			162,447			235,483			—			(101,954	)		(101,954	)
																								$	1,736,704		$	8,997,996		$	3,666,055		$	14,400,755		$	(45,337	)	$	(122,009	)	$	(167,346	)

Investment_in_Unconsolidated_E1

Investment in Unconsolidated Entity (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Financial Information Summary of Cherry Creek	'
	The financial information summary of Cherry Creek is presented below:
		December 31,			December 31,
		2013			2012
	Assets:
	Real estate, at cost
	Land	$	21,295,615		$	21,295,615
	Building		14,278,948			14,278,948
	Tenant improvement		5,651,091			5,614,715
			41,225,654			41,189,278
	Accumulated depreciation		(3,910,737	)		(2,300,946	)
	Real estate, net		37,314,917			38,888,332
	Cash and cash equivalents		969,732			236,404
	Restricted cash		58,179			72,369
	Accounts receivable		1,060,297			692,829
	Related party receivable		—			1,463,791
	Deferred costs		45,533			136,597
	Deferred leasing costs, net		1,710,128			—
	Acquired lease intangibles, net		5,599,044			6,713,644
	Prepaid expenses and other assets		56,874			61,026
	Total Assets	$	46,814,704		$	48,264,992
	Liabilities:
	Mortgage loan payable	$	36,000,000		$	36,000,000
	Accounts payable and accrued expenses		293,045			164,632
	Acquired lease intangibles, net		76,424			98,523
	Tenant rent deposits		133,986			133,986
	Other liabilities		—			314,856
	Deferred rent		47,849			—
	Total liabilities		36,551,304			36,711,997
	Members’ Equity		10,263,400			11,552,995
	Total Liabilities & Members Equity	$	46,814,704		$	48,264,992
		Year ended
		December 31,
		2013			2012
	Operating revenues	$	6,710,132		$	6,661,188
	Operating expenses		4,901,802			4,471,733
	Interest		854,689			992,114
	Net income	$	953,641		$	1,197,341
	Amount recorded in equity in income	$	402,913		$	505,877

Debt_Tables

Debt (Tables)	9 Months Ended										12 Months Ended
	Sep. 30, 2014										Dec. 31, 2013
Debt Disclosure [Abstract]	'										'
Summary of Secured Indebtedness	'										'
	The following table summarizes the secured indebtedness as of September 30, 2014 and December 31, 2013:										The following table summarizes the Predecessor’s secured indebtedness as of December 31, 2013 and December 31, 2012:
	Property		September 30, 2014		December 31, 2013		Interest Rate as			Maturity	Property		December 31,		December 31,		Interest			Maturity
							of						2013		2012		Rate as of
							September 30,										December 31,
							2014										2013
	Revolving Credit Facility (1)		$	6,400,000	$	—		LIBOR +2.75	%(2)	Apr-16	City Center (1)		$	22,333,938	$	19,756,600		6	% (2)		June 2014	(3)
	AmberGlen Mortgage Loan (3)			25,262,516		—		4.38	%	May-19	Central Fairwinds (4)			10,000,000		10,000,000		6.25	%		October 2015
	Midland Life Insurance (4)			95,000,000		—		4.34	%	May-21	AmberGlen			23,500,000		23,500,000		6.25	%		Jul-17	(5)
	Lake Vista Pointe (5)			18,460,000		—		4.28	%	Aug-24	Corporate Parkway (4)			19,133,333		—		7.25	%		Apr-16	(6)
	Washington Group Plaza (5)			34,481,789		34,949,159		3.85	%	Jul-18	Washington Group Plaza (7)			34,949,159		—		3.848	%		Jul-18
	City Center (6)			—		22,333,938		—		June 2014
	Central Fairwinds (7)			—		10,000,000		—		October 2015	Total		$	109,916,430	$	53,256,600
	Corporate Parkway (7)			—		19,133,333		—		Apr-16
	AmberGlen (8)			—		23,500,000		—		Jul-17	All interest rates are fixed interest rates with the exception of City Centre as explained in footnote (2) below.
	Total		$	179,604,305	$	109,916,430					(1)	Interest payable monthly plus monthly principal payment of $20,000.
											(2)	Interest rate is equal to a floating rate per annum equal to LIBOR plus 4%, but in no event shall the interest rate be lower than six percent (6%).
	All interest rates are fixed interest rates with the exception of the revolving credit facility (“Revolving Credit Facility”) as explained in footnote 1 below.										(3)	In November 2013, the Predecessor exercised its option to extend the maturity date of the loan, for a six month period. The Predecessor has one and a half year of additional extension option.
											(4)	Interest only payable monthly, principal due on maturity.
	(1)	The Revolving Credit Facility currently has $30 million authorized with $26.4 million available immediately. In addition, the Revolving Credit Facility has an accordion feature that will permit us to borrow up to $150 million, subject to additional collateral availability and lender approval. The Revolving Credit Facility bears an interest rate of LIBOR plus 2.75% and requires the Company to maintain a fixed charge coverage ratio of no less than 1.60x. The Revolving Credit Facility is cross-collateralized by Central Fairwinds and Plaza 25.									(5)	The Predecessor has the option to extend the debt to July 2022.
	(2)	As of September 30, 2014, the 3 Month LIBOR rate was 0.27%.									(6)	With extension option of three consecutive terms of one year.
	(3)	Following the Formation Transactions, on April 29, 2014, we entered into a new mortgage loan in relation to the AmberGlen property for $25.4 million. The loan bears an interest rate of 4.38% and matures on May 1, 2019. The Company is required to maintain a minimum net worth of $25 million and a minimum liquidity of $2 million.									(7)	Interest payable monthly plus principal based on 360 months of amortization.
	(4)	The loan is cross-collateralized by Corporate Parkway, Cherry Creek and City Center. Interest only until February 2016 then interest payable monthly plus principal based on 360 months of amortization. The loan bears a fixed interest rate of 4.34% and matures on May 6, 2021.
	(5)	Interest payable monthly plus principal based on 360 months of amortization.
	(6)	Interest payable monthly plus monthly principal payment of $20,000. This loan was extinguished on April 21, 2014 in relation to the Formation Transaction.
	(7)	Interest only payable monthly, principal due on maturity. This loan was extinguished on April 21, 2014 in relation to the Formation Transactions.
	(8)	This AmberGlen loan was refinanced on April 29, 2014 with the new AmberGlen loan discussed in footnote (3) above.
Schedule of Principal Repayments of Mortgage Payable	'										'
	The scheduled principal repayments of mortgage payable as of September 30, 2014 are as follows:										The scheduled principal repayments of mortgage payable as of December 31, 2013 are as follows:
	2014		$	259,621							2014		$	22,961,366
	2015			1,065,209							2015			10,652,349
	2016			8,420,590							2016			43,307,899
	2017			2,873,753							2017			705,054
	2018			34,836,409							2018			32,289,762
	Thereafter			132,148,723							Thereafter			—
			$	179,604,305									$	109,916,430

Noncontrolling_Interests_Table

Noncontrolling Interests (Tables)	12 Months Ended
	Dec. 31, 2013
Noncontrolling Interest [Abstract]	'
Summary of Noncontrolling Interests	'
	The following table summarizes the noncontrolling interests as of December 31, 2013 and December 31, 2012:
		December 31, 2013			December 31, 2012
	City Center	$	58,147		$	118,263
	Central Fairwinds		434,810			498,955
	AmberGlen		(707,889	)		(756,760	)
	Washington Group Plaza		1,298,672			—
		$	1,083,740		$	(139,542	)

Future_Minimum_Rent_Schedule_T

Future Minimum Rent Schedule (Tables)	9 Months Ended			12 Months Ended
	Sep. 30, 2014			Dec. 31, 2013
Leases [Abstract]	'			'
Schedule of Future Minimum Lease Payments under Noncancellable Operating Leases	'			'
	Future minimum lease payments to be received as of September 30, 2014 under noncancellable operating leases for the next five years and thereafter are as follows:			Future minimum lease payments to be received as of December 31, 2013 under noncancellable operating leases for the next five years and thereafter are as follows:
	2014	$	8,532,363	2014	$	22,193,033
	2015		35,048,004	2015		22,367,600
	2016		28,542,171	2016		15,694,478
	2017		20,887,708	2017		8,279,781
	2018		17,401,040	2018		5,056,811
	Thereafter		65,593,200	Thereafter		10,106,308
		$	176,004,486		$	83,698,011

Subsequent_Events_Tables

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Purchase Price Allocation on Preliminary Basis	'
	The purchase price allocation on a preliminary basis, and the resulting impact on the Predecessor’s equity, is as follows:
	Land	$	25,745,012
	Building and improvements		20,144,126
	Lease intangible asset		12,009,085
	Lease intangible liability		(249,409	)
	Net working capital assumed		(815,378	)
			56,833,436
	Mortgage loan obtained in connection with acquisition		(50,000,000	)
	Elimination of investment in Cherry Creek		(4,337,899	)
	Deferred financing costs		1,172,764
	Net increase in equity	$	3,668,301

Organization_and_Description_o1

Organization and Description of Business (Tables)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary of Predecessor and Company's Statement of Operations	'
	The following is a summary of the Predecessor Statements of Operations for the period from April 1, 2014 through April 20, 2014 and for the period from January 1, 2014 through April 20, 2014, and the Company’s Statement of Operations for the period from April 21, 2014 through September 30, 2014. These amounts are included in the condensed consolidated and combined statement of operations herein for the three and nine months ended September 30, 2014. All balances as of December 31, 2013 and for the three and nine months ended September 30, 2013 are those of the Predecessor.
		Predecessor						City Office REIT, Inc
		April 1, 2014			January 1, 2014			April 21, 2014 through
		through April 20,			through April 20,			September 30, 2014
		2014			2014
	Revenues:
	Rental income	$	1,628,480		$	8,865,238		$	15,122,653
	Expense reimbursement		105,569			555,611			1,240,956
	Other		47,198			342,859			246,772
	Total Revenues		1,781,247			9,763,708			16,610,381
	Operating Expenses:
	Property operating expenses		510,431			2,764,893			4,539,478
	Insurance		23,570			176,428			313,043
	Property taxes		136,684			597,788			1,177,853
	Property management fees		27,265			234,882			384,615
	Acquisition costs		—			806,344			745,003
	Base management fees		—			—			411,471
	Stock-based compensation		—			—			667,347
	General and administrative		29,799			79,799			741,580
	Depreciation and amortization		701,962			3,861,939			6,771,654
	Total Operating Expenses		1,429,711			8,522,073			15,752,044
	Operating income		351,536			1,241,635			858,337
	Interest expense, net		(610,378	)		(3,771,792	)		(4,993,283	)
	Change in fair value of earn-out		—			—			(1,047,515	)
	Gain on equity investment		—			4,474,644			—
	Net (Loss)/Income		(258,842	)		1,944,487			(5,182,461	)
	Net Loss attributable to noncontrolling interests in properties		18,785			28,710			(37,036	)
	Net (Loss)/Income attributable to Predecessor		(240,057	)		1,973,197			—
	Net loss attributable to Operating Partnership noncontrolling interests								1,508,097
	Net loss attributable to Stockholders								(3,711,400	)

Real_Estate_Investments_Tables

Real Estate Investments (Tables)	9 Months Ended
	Sep. 30, 2014
Real Estate [Abstract]	'
Schedule of Operating Results Relating to Acquired Entities	'
	The following table represents the results of the properties’ operations since the date of acquisition on a stand-alone basis.
		Three months ended			Nine months ended
		September 30, 2014			September 30, 2014
	Operating revenues	$	3,466,503		$	7,190,976
	Operating expenses		(2,920,995	)		(6,625,117	)
	Interest		(753,974	)		(3,124,948	)
	Net loss before gain on equity investment	$	(208,466	)	$	(2,559,089	)

Earnings_per_Share_Tables

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Earnings per Share	'
	The following table shows the amounts used in computing the Company’s basic and diluted earnings per share. As of the three and nine months ended September 30, 2014, there is no dilution to earnings per share.
		Three Months Ended			Nine Months Ended
		September 30, 2014			September 30, 2014
	Numerator for loss per share – basic and diluted
	Net loss	$	(2,373,873	)	$	(3,237,974	)
	Less: Net loss attributable to noncontrolling interests in properties		(87,296	)		(8,326	)
	Less: Net loss attributable to Predecessor		—			(1,973,197	)
	Less: Net loss attributable to Operating Partnership unitholders’ noncontrolling interests		693,971			1,508,097
	Numerator for loss per share – basic and diluted	$	(1,767,198	)	$	(3,711,400	)
	Denominator for loss per share – basic and diluted		8,192,915			8,133,940
	Basic and diluted loss per share	$	(0.22	)	$	(0.46	)

Organization_and_Description_o2

Organization and Description of Business - Additional Information (Detail) (USD $)

0 Months Ended

9 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

9 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9-May-14

Apr. 21, 2014

Sep. 30, 2014

Apr. 21, 2014

Jan. 02, 2014

Apr. 21, 2014

Dec. 31, 2013

Apr. 21, 2014

Jan. 02, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Jan. 02, 2014

Apr. 21, 2014

Dec. 31, 2013

Apr. 21, 2014

Dec. 31, 2013

Apr. 21, 2014

Dec. 31, 2013

Apr. 21, 2014

Dec. 31, 2013

Sep. 30, 2014

Apr. 21, 2014

9-May-14

Apr. 21, 2014

Sep. 30, 2014

9-May-14

Apr. 21, 2014

Property

Property

Predecessor [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Corporate Parkway [Member]

Corporate Parkway [Member]

AmberGlen [Member]

AmberGlen [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

City Center Property [Member]

City Center Property [Member]

Non-Recourse Mortgage Loan [Member]

Non-Recourse Mortgage Loan [Member]

Common Units [Member]

Common Units [Member]

Common Units [Member]

Common Stock [Member]

Common Stock [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Building

Property

Business Description And Basis Of Presentation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of properties acquired

'

'

6

'

'

'

'

'

'

'

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unconsolidated investment ownership percentage

'

'

'

'

'

'

'

'

'

'

42.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of buildings acquired

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of ownership interest acquired in properties

'

'

71.60%

'

'

100.00%

89.90%

100.00%

'

100.00%

'

'

57.70%

100.00%

100.00%

76.00%

85.00%

90.00%

90.00%

95.00%

90.00%

'

'

'

'

'

'

'

Date acquired

'

'

'

'

'

'

'2013-06

'

'

'2014-01

'

'

'

'

'2013-05

'

'2009-12

'

'2012-05

'

'2010-12

'

'

'

'

'

'

'

Company formation date

'

'

26-Nov-13

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Operation commencement date

'

'

21-Apr-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock issued in IPO, shares

'

5,800,000

5,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock issued in IPO, price per share

'

'

'

$12.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued to underwriters under overallotment option

782,150

'

782,150

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

IPO Closed date

'

'

21-Apr-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross proceeds from IPO

$9,800,000

$72,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds from IPO

9,100,000

63,400,000

63,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Underwriting discounts

700,000

5,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other expenses relating to IPO

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase consideration, units issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,731,209

3,251,904

'

1,610,765

Purchase consideration, cash paid

'

19,400,000

'

'

12,000,000

'

'

'

12,000,000

12,020,893

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Previously issued number of redeemable shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

479,305

'

'

248,095

'

Common stock redemption value, in cash

9,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-recourse mortgage loan, amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$95,000,000

'

'

'

'

'

Number of properties in which loan refinanced

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-recourse mortgage loan, interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.34%

'

'

'

'

'

Non-recourse mortgage loan, maturity date

'

'

'

'

'

'

'

'

'

'

1-Aug-13

22-Jul-14

'

'

'

'

'

'

'

'

'

6-May-21

'

'

'

'

'

'

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Real Estate Properties (Detail)	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013
	Minimum [Member]	Minimum [Member]	Minimum [Member]	Minimum [Member]	Maximum [Member]	Maximum [Member]	Maximum [Member]	Maximum [Member]
	Buildings and Improvement [Member]	Buildings and Improvement [Member]	Furniture, Fixtures and Equipment [Member]	Furniture, Fixtures and Equipment [Member]	Buildings and Improvement [Member]	Buildings and Improvement [Member]	Furniture, Fixtures and Equipment [Member]	Furniture, Fixtures and Equipment [Member]
		Predecessor [Member]		Predecessor [Member]		Predecessor [Member]		Predecessor [Member]
Depreciation Amortization Impairment [Line Items]	'	'	'	'	'	'	'	'
Real estate properties estimated useful lives	'29 years	'29 years	'4 years	'4 years	'50 years	'50 years	'7 years	'7 years

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

12-May-14

Sep. 30, 2014

Sep. 15, 2014

Apr. 21, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dividend Declared on May 12, 2014 [Member]

Dividend Declared on May 12, 2014 [Member]

Dividend Declared on September 15, 2014 [Member]

Dividend Declared on September 15, 2014 [Member]

Common Units [Member]

Common Units [Member]

Common Stockholders [Member]

Common Stockholders [Member]

Common Unitholders [Member]

Common Unitholders [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Dividend Declared on May 12, 2014 [Member]

Dividend Declared on September 15, 2014 [Member]

Dividend Declared on May 12, 2014 [Member]

Dividend Declared on September 15, 2014 [Member]

Minimum [Member]

Summary Of Significant Accounting Policies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment charges

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0

$0

'

Reverted insurance coverage per depositor

'

'

'

'

'

'

'

'

'

'

'

'

'

'

250,000

'

'

Percentage of tax benefit likely of being realized upon settlement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

Mortgage loans payable, fair value

172,700,000

172,700,000

172,700,000

88,500,000

'

'

'

'

'

'

'

'

'

'

88,500,000

35,715,000

'

Accumulated amortization of deferred leasing costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

953,065

509,676

'

Percentage of REIT taxable income distributed to stockholders

'

'

90.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Purchase consideration, units issued

'

'

'

'

'

'

'

'

3,731,209

3,251,904

'

'

'

'

'

'

'

Percent of ownership interest acquired in properties

71.60%

71.60%

71.60%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Declared cash dividend per share

'

'

'

'

'

$0.18

'

$0.24

'

'

'

'

'

'

'

'

'

Dividends payable, declared date

'

'

'

'

12-May-14

'

15-Sep-14

'

'

'

'

'

'

'

'

'

'

Dividends payable date

'

'

'

'

17-Jul-14

'

17-Oct-14

'

'

'

'

'

'

'

'

'

'

Dividends payable, date of record

'

'

'

'

3-Jul-14

'

3-Oct-14

'

'

'

'

'

'

'

'

'

'

Dividends

'

$4,783,934

'

'

$2,100,000

'

$2,700,000

'

'

'

$1,500,000

$1,900,000

$600,000

$800,000

'

'

'

Potentially dilutive shares outstanding

3,251,904

'

3,251,904

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Summary of Interest Rate Derivative Not Designated as Cash Flow Hedge (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
		Predecessor [Member]	Predecessor [Member]
		City Center [Member]	City Center [Member]
Derivatives, Fair Value [Line Items]	'	'	'
Type of Instrument	'	'Interest Rate Swap	'
Notional amount	'	$15,000,000	'
Maturity date	'	30-Jun-14	'
Effective rate	'	6.00%	'
Fair Value	$0	'	$3,000

Schedule_of_Rent_Receivables_D

Schedule of Rent Receivables (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
		Predecessor [Member]	Predecessor [Member]
Receivables Net [Line Items]	'	'	'
Billed receivables	'	$343,785	$268,870
Straight-line receivables	'	4,336,499	2,006,904
Total rents receivable	$7,372,062	$4,680,284	$2,275,774

Real_Estate_Investments_Schedu

Real Estate Investments - Schedule of Acquired Properties (Detail)

Sep. 30, 2014

Apr. 21, 2014

Apr. 21, 2014

Apr. 21, 2014

Apr. 21, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2014

Jan. 02, 2014

Sep. 30, 2014

Jun. 04, 2014

Sep. 30, 2014

Jul. 18, 2014

Central Fairwinds [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Cherry Creek [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Central Fairwinds [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Plaza 25 [Member]

Plaza 25 [Member]

Lake Vista Pointe [Member]

Lake Vista Pointe [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Real estate property, date acquired

'

'

'

'

'

'2012-05

'2013-05

'2013-06

'2014-01

'

'2014-06

'

'2014-07

'

Real estate property, percentage owned

71.60%

90.00%

100.00%

100.00%

100.00%

90.00%

100.00%

89.90%

100.00%

57.70%

100.00%

100.00%

100.00%

100.00%

Real_Estate_Investments_Schedu1

Real Estate Investments - Schedule of Preliminary Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014
	Cherry Creek [Member]	Plaza 25 [Member]	Lake Vista Pointe [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
					Washington Group Plaza [Member]	Corporate Parkway [Member]	Central Fairwinds [Member]	Cherry Creek [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'
Land	$25,745,012	$1,764,235	$4,115,158	$16,504,845	$12,748,491	$3,756,354	$1,746,721	'
Building and improvements	15,771,277	18,486,580	17,562,157	36,579,472	17,999,655	18,579,817	9,073,245	'
Tenant improvements	4,372,849	2,075,932	2,581,839	4,626,345	2,717,043	1,909,302	677,821	'
Prepaid expenses and other assets	'	1,926	29,610	222,523	217,170	5,353	57,417	'
Deferred leasing costs	'	'	'	12,492	12,492	'	'	'
Acquired intangible assets	12,009,085	2,923,754	3,682,828	14,619,615	10,470,441	4,149,174	2,644,796	'
Accounts payable and accrued liabilities	-815,378	-640,630	-1,732,801	-1,233,521	-1,233,521	'	-311,719	'
Acquired intangible liabilities	'	'	'	-17,936	-17,936	'	'	'
Lease intangible liability	-249,409	-327,906	'	'	'	'	'	'
Fair value of assets and liabilities at acquisition	$56,833,436	$24,283,891	$26,238,791	$71,313,835	$42,913,835	$28,400,000	$13,888,281	$56,833,436

Real_Estate_Investments_Additi

Real Estate Investments - Additional Information (Detail) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

Apr. 21, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Apr. 21, 2014

Jan. 02, 2014

Apr. 20, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jan. 02, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Jan. 02, 2014

Dec. 31, 2013

Dec. 31, 2012

Jun. 04, 2014

Sep. 30, 2014

Jun. 04, 2014

Jul. 18, 2014

Sep. 30, 2014

Jul. 18, 2014

Cherry Creek [Member]

Cherry Creek [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Plaza 25 [Member]

Plaza 25 [Member]

Plaza 25 [Member]

Lake Vista Pointe [Member]

Lake Vista Pointe [Member]

Lake Vista Pointe [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property acquisition costs

'

$401,200

$745,003

$1,551,347

($1,551,347)

'

'

$806,344

$1,479,292

$1,479,292

$212,765

'

'

'

$1,551,347

'

'

'

'

'

'

'

'

'

Business acquisition, ownership percentage

'

71.60%

71.60%

71.60%

'

100.00%

'

'

'

'

'

'

100.00%

100.00%

'

57.70%

'

'

'

100.00%

100.00%

'

100.00%

100.00%

Business acquisition, purchase consideration

19,400,000

'

'

'

'

'

12,000,000

'

'

'

'

12,000,000

'

12,020,893

'

'

'

'

24,300,000

'

'

26,200,000

'

'

Business acquisition, liabilities assumed

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of debt

'

'

'

'

'

'

'

'

'

'

'

36,000,000

'

36,000,000

'

'

'

'

'

'

'

'

'

'

Business acquisition, deferred financing costs

'

2,919,700

2,919,700

2,919,700

'

'

'

'

'

1,167,666

591,765

'

'

'

'

1,200,000

45,533

136,597

'

'

'

'

'

'

Business acquisition, transaction costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000

'

'

'

'

'

'

'

'

Expenses related to acquisition

'

'

'

'

'

'

'

'

'

'

'

'

806,344

806,344

'

'

'

'

'

'

'

'

'

'

Gain on equity investment

'

'

'

$4,474,644

'

'

'

$4,474,644

'

'

'

'

'

$4,500,000

'

'

'

'

'

'

'

'

'

'

Real_Estate_Investments_Schedu2

Real Estate Investments - Schedule of Operating Results Relating to Acquired Entities (Detail) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Apr. 20, 2014

Sep. 30, 2013

Apr. 20, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenues

$9,998,420

$16,610,381

$26,374,089

$1,781,247

$6,832,376

$9,763,708

$14,625,527

$20,490,578

$11,516,458

$2,931,901

$2,608,056

$2,009,568

$5,145,114

'

'

$6,710,132

$6,661,188

Operating Expenses Excluding Depreciation And Amortization

'

'

'

'

'

'

'

'

'

1,828,527

1,536,172

1,084,575

2,675,233

'

'

'

'

Depreciation and amortization

4,057,809

6,771,654

10,633,593

701,962

2,530,128

3,861,939

5,245,498

7,775,219

3,956,204

1,042,786

753,025

1,496,738

2,313,444

'

'

'

'

Income Loss From Continuing Operations

'

'

'

'

'

'

'

'

'

60,588

318,859

-571,745

156,437

'

'

'

'

Operating revenues

9,036,858

15,122,653

23,987,891

1,628,480

6,222,764

8,865,238

12,938,686

18,427,794

9,991,712

'

'

'

'

3,466,503

7,190,976

'

'

Operating expenses

-2,782,296

-4,539,478

-7,304,371

-510,431

-1,819,634

-2,764,893

-4,005,302

-6,021,287

-4,109,993

'

'

'

'

-2,920,995

-6,625,117

'

'

Interest expense, net

'

'

'

'

'

'

'

'

'

'

'

'

'

-753,974

-3,124,948

'

'

Loss from Continuing Operations before Equity Method Investments, Income Taxes

'

'

'

'

'

'

'

'

'

'

'

'

'

($208,466)

($2,559,089)

'

'

Real_Estate_Investments_Schedu3

Real Estate Investments - Schedule of Business Acquisition Pro Forma Results of Operations (Detail) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Apr. 20, 2014

Sep. 30, 2013

Apr. 20, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Cherry Creek [Member]

Plaza 25 [Member]

Lake Vista Pointe [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Scenario, Previously Reported [Member]

Corporate Parkway [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Plaza 25 [Member]

Lake Vista Pointe [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total revenues as reported by City Office REIT, Inc. and Predecessor

$9,998,420

$16,610,381

$26,374,089

'

'

'

$1,781,247

$6,832,376

$9,763,708

$14,625,527

$20,490,578

$11,516,458

'

$2,009,568

'

$5,145,114

'

'

$6,710,132

$6,661,188

'

'

Proforma total revenues

'

'

29,926,141

'

1,672,163

1,879,889

'

'

'

25,368,555

25,477,615

23,513,005

'

1,130,919

3,013,034

3,856,118

8,983,513

5,186,771

'

'

2,964,289

2,591,968

Total operating income as reported by the City Office REIT, Inc. and Predecessor

595,446

858,337

2,099,972

2,099,972

'

'

351,536

1,736,182

1,241,635

2,108,319

2,771,005

1,298,429

'

'

'

'

'

2,108,319

'

'

'

'

Property acquisition costs

-401,200

-745,003

-1,551,347

1,551,347

'

'

'

'

-806,344

-1,479,292

-1,479,292

-212,765

-1,479,292

'

'

'

'

-1,551,347

'

'

'

'

Proforma operating income

'

'

$3,849,436

'

($91,120)

$289,237

'

'

'

$1,320,948

$3,824,010

$738,904

'

$211,499

$587,805

$841,506

$331,962

$527,261

'

'

($161,531)

$398,246

Lease_Intangibles_Schedule_of_

Lease Intangibles - Schedule of Lease Intangibles and Value of Assumed Lease Obligations (Detail) (USD $)	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
		Above Market Leases [Member]	In Place Leases [Member]	Leasing Commissions [Member]	Above Market and In Place Leases and Leasing Commissions [Member]	Below Market Leases [Member]	Below Market Ground Lease [Member]	Total of Below Market and Below Market Ground Leases [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
										Above Market Leases [Member]	Above Market Leases [Member]	In Place Leases [Member]	In Place Leases [Member]	In Place Leases [Member]	Leasing Commissions [Member]	Leasing Commissions [Member]	Above Market and In Place Leases and Leasing Commissions [Member]	Above Market and In Place Leases and Leasing Commissions [Member]	Above Market and In Place Leases and Leasing Commissions [Member]	Below Market Leases [Member]	Below Market Leases [Member]	Below Market Ground Lease [Member]	Below Market Ground Lease [Member]	Total of Below Market and Below Market Ground Leases [Member]	Total of Below Market and Below Market Ground Leases [Member]
														Scenario, Previously Reported [Member]					Scenario, Previously Reported [Member]
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Cost	'	$6,980,813	$22,370,372	$12,535,456	$41,886,641	($746,219)	($138,218)	($884,437)	'	$3,043,030	$1,839,335	$14,885,115	$6,027,484	$15,731,887	$5,447,198	$1,735,686	$23,375,343	$9,602,505	$24,222,115	($168,904)	($150,968)	($138,218)	($138,218)	($307,122)	($289,186)
Accumulated Amortization	'	-3,131,678	-8,604,160	-3,155,524	-14,891,362	215,986	19,217	235,203	'	-1,306,326	-765,985	-6,536,311	-3,902,265	-6,733,891	-1,781,143	-931,966	-9,623,780	-5,600,216	-9,821,360	123,567	108,469	16,209	12,199	139,776	120,668
Total	$26,995,279	$3,849,135	$13,766,212	$9,379,932	$26,995,279	($530,233)	($119,001)	($649,234)	$13,751,563	$1,736,704	$1,073,350	$8,348,804	$2,125,219	$8,997,996	$3,666,055	$803,720	$13,751,563	$4,002,289	$14,400,755	($45,337)	($42,499)	($122,009)	($126,019)	($167,346)	($168,518)

Lease_Intangibles_Estimated_Ag

Lease Intangibles - Estimated Aggregate Amortization Expense for Lease Intangibles (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
		Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
		Above Market Leases [Member]	In Place Leases [Member]	Leasing Commissions [Member]	Above Market and In Place Leases and Leasing Commissions [Member]	Below Market Leases [Member]	Below Market Ground Lease [Member]	Total of Below Market and Below Market Ground Leases [Member]
Finite-Lived Intangible Assets [Line Items]	'	'	'	'	'	'	'	'
2014	$1,650,514	$579,905	$3,412,297	$1,200,127	$5,192,329	($16,454)	($4,011)	($20,465)
2015	6,343,804	543,010	2,580,918	1,137,079	4,261,007	-16,454	-4,011	-20,465
2016	5,860,838	315,073	2,454,341	697,689	3,467,103	-9,382	-4,011	-13,393
2017	3,605,134	145,904	550,440	298,369	994,713	-3,047	-4,011	-7,058
2018	2,430,107	79,776	'	170,344	250,120	'	-4,011	-4,011
Thereafter	6,455,648	73,036	'	162,447	235,483	'	-101,954	-101,954
Total	$26,346,045	$1,736,704	$8,997,996	$3,666,055	$14,400,755	($45,337)	($122,009)	($167,346)

Investment_in_Unconsolidated_E2

Investment in Unconsolidated Entity - Addtional Information (Detail) (Cherry Creek [Member], Predecessor [Member], USD $)	0 Months Ended	12 Months Ended
	Jul. 30, 2011	Dec. 31, 2013	Dec. 31, 2012
Investment In Unconsolidated Affiliates [Line Items]	'	'	'
Ownership interest	42.30%	'	'
Security for loan	'	$36,000,000	$12,575,167
Loan Maturity Date	'	1-Aug-13	22-Jul-14
Notional amount	'	'	9,000,000
Estimated fair value,Interest swap	'	'	116,135
Swap termination, Period	'	'	31-Dec-13
Interest Rate Swap [Member]	'	'	'
Investment In Unconsolidated Affiliates [Line Items]	'	'	'
Notional amount	'	$36,000,000	'

Investment_in_Unconsolidated_E3

Investment in Unconsolidated Entity - Financial Information (Detail) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Apr. 20, 2014

Sep. 30, 2013

Apr. 20, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Jan. 02, 2014

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Land

$61,788,918

$61,788,918

$61,788,918

'

'

'

'

'

$30,164,513

$13,659,668

'

$21,295,615

$21,295,615

'

Building

115,639,203

115,639,203

115,639,203

'

'

'

'

'

62,908,338

24,380,754

'

14,278,948

14,278,948

'

Tenant improvement

25,252,774

25,252,774

25,252,774

'

'

'

'

'

14,590,971

8,204,156

'

5,651,091

5,614,715

'

Real estate properties, gross

202,879,009

202,879,009

202,879,009

'

'

'

'

'

107,861,936

46,256,257

'

41,225,654

41,189,278

'

Accumulated depreciation

-13,065,451

-13,065,451

-13,065,451

'

'

'

'

'

-7,735,450

-4,084,425

'

-3,910,737

-2,300,946

'

Real estate, net

189,813,558

189,813,558

189,813,558

'

'

'

'

'

100,126,486

42,171,832

'

37,314,917

38,888,332

'

Cash and cash equivalents

8,855,196

8,855,196

8,855,196

7,127,764

'

7,553,397

'

7,553,397

7,127,764

3,106,616

1,467,404

969,732

236,404

'

Restricted cash

13,184,871

13,184,871

13,184,871

'

'

'

'

'

7,368,124

1,597,208

'

58,179

72,369

'

Accounts receivable

7,372,062

7,372,062

7,372,062

'

'

'

'

'

4,680,284

2,275,774

'

1,060,297

692,829

'

Related party receivable

'

'

'

'

'

'

'

'

'

'

'

'

1,463,791

'

Deferred costs

2,919,700

2,919,700

2,919,700

'

'

'

'

'

1,167,666

591,765

'

45,533

136,597

1,200,000

Deferred leasing costs, net

2,478,801

2,478,801

2,478,801

'

'

'

'

'

2,302,841

1,889,319

'

1,710,128

'

'

Acquired lease intangibles, net

26,995,279

26,995,279

26,995,279

'

'

'

'

'

13,751,563

'

'

5,599,044

6,713,644

'

Prepaid expenses and other assets

546,298

546,298

546,298

'

'

'

'

'

296,572

498,570

'

56,874

61,026

'

Total Assets

252,165,765

252,165,765

252,165,765

'

'

'

'

'

142,990,149

'

'

46,814,704

48,264,992

'

Liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mortgage loan payable

179,604,305

179,604,305

179,604,305

'

'

'

'

'

109,916,430

53,256,600

'

36,000,000

36,000,000

'

Accounts payable and accrued expenses

4,201,127

4,201,127

4,201,127

'

'

'

'

'

2,347,999

'

'

293,045

164,632

'

Acquired lease intangibles, net

649,234

649,234

649,234

'

'

'

'

'

167,346

168,518

'

76,424

98,523

'

Tenant rent deposits

1,842,820

1,842,820

1,842,820

'

'

'

'

'

1,361,641

733,180

'

133,986

133,986

'

Other liabilities

'

'

'

'

'

'

'

'

'

'

'

'

314,856

'

Deferred rent

2,648,850

2,648,850

2,648,850

'

'

'

'

'

1,488,618

253,886

'

47,849

'

'

Total liabilities

199,635,868

199,635,868

199,635,868

'

'

'

'

'

115,282,034

'

'

36,551,304

36,711,997

'

Members' Equity

52,529,897

52,529,897

52,529,897

'

32,058,047

'

32,058,047

'

27,708,115

6,009,862

18,466,718

10,263,400

11,552,995

'

Total Liabilities & Members Equity

252,165,765

252,165,765

252,165,765

'

'

'

'

'

142,990,149

'

'

46,814,704

48,264,992

'

Operating revenues

9,998,420

16,610,381

26,374,089

'

1,781,247

6,832,376

9,763,708

14,625,527

20,490,578

11,516,458

'

6,710,132

6,661,188

'

Operating expenses

9,402,974

15,752,044

24,274,117

'

1,429,711

5,096,194

8,522,073

12,517,208

17,719,573

10,218,029

'

4,901,802

4,471,733

'

Interest

1,866,999

'

5,821,533

'

'

1,229,215

'

3,065,648

'

'

'

854,689

992,114

'

Net income

'

'

-1,973,197

'

-240,057

179,614

1,973,197

-1,280,489

'

'

'

953,641

1,197,341

'

Amount recorded in equity in income

($1,767,198)

($3,711,400)

($3,711,400)

'

'

'

'

'

($4,132,925)

($1,595,094)

'

$402,913

$505,877

'

Debt_Summary_of_Secured_Indebt

Debt - Summary of Secured Indebtedness (Detail) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

City Center [Member]

City Center [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

AmberGlen [Member]

AmberGlen [Member]

Corporate Parkway [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

AmberGlen Mortgage Loan [Member]

Midland Life Insurance [Member]

Lake Vista Pointe [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

City Center [Member]

City Center [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

AmberGlen [Member]

AmberGlen [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Secured indebtedness

$179,604,305

$109,916,430

$6,400,000

'

'

$22,333,938

'

$10,000,000

'

$23,500,000

'

$19,133,333

$34,481,789

$34,949,159

$25,262,516

$95,000,000

$18,460,000

$109,916,430

$53,256,600

$22,333,938

$19,756,600

$10,000,000

$10,000,000

$23,500,000

$23,500,000

$19,133,333

$34,949,159

Interest Rate

'

'

2.75%

'

'

'

'

'

'

'

'

'

3.85%

'

4.38%

4.34%

4.28%

'

'

6.00%

'

6.25%

'

6.25%

'

7.25%

3.85%

Maturity

'

'

'2016-04

'

'2014-06

'

'2015-10

'

'2017-07

'

'2016-04

'

'2018-07

'

'2019-05

'2021-05

'2024-08

'

'

'2014-06

'

'2015-10

'

'2017-07

'

'2016-04

'2018-07

Interest Rate, Description

'

'

'LIBOR+2.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Summary_of_Secured_Indebt1

Debt - Summary of Secured Indebtedness (Parenthetical) (Detail) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

City Center [Member]

City Center [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

Corporate Parkway [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

AmberGlen Mortgage Loan [Member]

Midland Life Insurance [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Minimum [Member]

Minimum [Member]

City Center [Member]

City Center [Member]

City Center [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

Corporate Parkway [Member]

Washington Group Plaza [Member]

Revolving Credit Facility [Member]

Predecessor [Member]

London Interbank Offered Rate (LIBOR) [Member]

City Center [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Monthly interest payable plus principal payment

'

'

'

$20,000

'

'

'

'

'

'

'

'

'

'

'

'

$20,000

'

'

'

'

'

'

'

'

3 Month LIBOR rate

'

'

'

'

'

'

'

'

'

'

'

'

0.27%

'

'

'

'

'

4.00%

'

'

'

'

'

'

Effective interest rate of loan

'

'

'

'

'

'

'

'

3.85%

'

4.38%

4.34%

2.75%

'

'

'

6.00%

'

'

6.25%

'

7.25%

3.85%

'

6.00%

Amortization period

'

'

'

'

'

'

'

'

'360 months

'

'

'360 months

'

'

'

'

'

'

'

'

'

'

'360 months

'

'

Revolving Credit Facility, authorized amount

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Revolving Credit Facility, current borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

26,400,000

'

'

'

'

'

'

'

'

'

'

'

'

Revolving Credit Facility, accordion feature

'

'

'

'

'

'

'

'

'

'

'

'

150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Revolving Credit Facility interest rate, description

'

'

'

'

'

'

'

'

'

'

'

'

'LIBOR plus 2.75%

'

'

'

'

'

'

'

'

'

'

'

'

Fixed charge coverage ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.6

'

Mortgage loan

179,604,305

109,916,430

'

22,333,938

'

10,000,000

'

19,133,333

34,481,789

34,949,159

25,262,516

95,000,000

6,400,000

'

109,916,430

53,256,600

22,333,938

19,756,600

'

10,000,000

10,000,000

19,133,333

34,949,159

'

'

Loan Maturity Date

'

'

'

'

'

'

'

'

'

'

1-May-19

6-May-21

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum net worth required

'

'

'

'

'

'

'

'

'

'

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum liquidity requirements

'

'

'

'

'

'

'

'

'

'

$2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loan extinguishment date

'

'

21-Apr-14

'

21-Apr-14

'

21-Apr-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Schedule_of_Principal_Rep

Debt - Schedule of Principal Repayments of Mortgage Payable (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
		Predecessor [Member]	Predecessor [Member]
Debt Instrument [Line Items]	'	'	'
2014	'	$22,961,366	'
2014	259,621	'	'
2015	1,065,209	10,652,349	'
2016	8,420,590	43,307,899	'
2017	2,873,753	705,054	'
2018	34,836,409	32,289,762	'
Thereafter	132,148,723	'	'
Total principal repayments of mortgage payable	$179,604,305	$109,916,430	$53,256,600

Noncontrolling_Interests_Detai

Noncontrolling Interests (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013
		Predecessor [Member]	Predecessor [Member]	City Center [Member]	City Center [Member]	Central Fairwinds [Member]	Central Fairwinds [Member]	AmberGlen [Member]	AmberGlen [Member]	Washington Group Plaza [Member]
				Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
Noncontrolling Interest [Line Items]	'	'	'	'	'	'	'	'	'	'
Noncontrolling interests in properties	($736,411)	$1,083,740	($139,542)	$58,147	$118,263	$434,810	$498,955	($707,889)	($756,760)	$1,298,672

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

9-May-14

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

9-May-14

9-May-14

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Apr. 20, 2014

Sep. 30, 2013

Apr. 20, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2013

9-May-14

Sep. 30, 2014

9-May-14

9-May-14

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Property

Property

Property

Common Units [Member]

Common Stock [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Second City Group [Member]

Second City Group [Member]

Second City Group [Member]

Second City Group [Member]

Formation Transactions [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Property

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

CANADA

Common Units [Member]

Common Stock [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

2013 [Member]

2013 [Member]

2014 [Member]

2014 [Member]

2015 [Member]

2015 [Member]

Washington Group Plaza [Member]

Related Party Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of real estate properties

'

3

3

3

'

'

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property management fee, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.75%

1.75%

1.75%

3.50%

3.50%

Property management fee, Description

'

'

'

'Fee ranging from 1.75% to 3.5% of gross revenue

'

'

'

'

'

'

'

'

'

'

'Fee ranging from 1.75% to 3.5% of gross revenue.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property management fee, percentage of gross revenue

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

1.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property management fee in excess of net operating income, percentage

'

'

'

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

15.00%

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum property management fee

'

'

'

'

'

'

'

$5,000,000

$5,450,000

$5,600,000

'

'

'

'

'

'

'

'

$5,000,000

$5,000,000

$5,450,000

$5,500,000

$5,600,000

$5,600,000

'

'

'

'

'

'

'

'

'

'

'

Property management fees

'

225,719

384,615

619,497

'

'

'

'

'

'

27,265

143,764

234,882

397,297

539,460

571,420

'

90,745

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred offering costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,830,950

'

'

'

'

'

'

'

'

'

1,830,950

'

'

'

'

'

'

'

'

'

'

Deferred financing costs

'

2,919,700

2,919,700

2,919,700

'

'

'

'

'

'

'

'

'

'

1,167,666

591,765

'

'

'

'

'

'

'

'

125,000

'

'

'

'

'

'

'

'

'

'

Offering costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,983,195

'

'

'

'

'

'

'

'

'

1,983,195

'

'

'

'

'

'

'

'

'

'

Other professional fees

'

'

'

'

'

'

'

'

'

'

'

'

'

'

160,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Formation transactions completed date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21-Apr-14

'

'

'

'

'

'

'

'

Consideration for formation transactions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19,400,000

'

'

'

'

'

'

'

'

Additional payments to Second City reimbursement of IPO

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,900,000

'

'

4,900,000

'

'

'

'

'

Additional payments to the Second City Group for working capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,800,000

'

'

'

'

'

'

'

'

Proceeds from previously issued redeemable shares value

$9,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$9,100,000

'

'

'

'

'

'

'

'

'

Previously issued number of redeemable shares

'

'

'

'

479,305

248,095

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

479,305

248,095

'

'

'

'

'

'

Asset management agreement initial term

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

Asset management agreement renewal term

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

'

'

'

'

'

Asset management agreement termination description

'

'

'

'

'

'

'

'

'

'This agreement can be terminated by the Company or the property manager upon thirty days prior written notice to the other party.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Future_Minimum_Rent_Schedule_S

Future Minimum Rent Schedule - Schedule of Future Minimum Lease Payments under Noncancellable Operating Leases (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
		Predecessor [Member]
Schedule Of Operating Leases Future Minimum Payments Receivable [Line Items]	'	'
2014	$8,532,363	$22,193,033
2015	35,048,004	22,367,600
2016	28,542,171	15,694,478
2017	20,887,708	8,279,781
2018	17,401,040	5,056,811
Thereafter	65,593,200	10,106,308
Total future minimum lease payments to be received	$176,004,486	$83,698,011

Future_Minimum_Rent_Schedule_A

Future Minimum Rent Schedule - Additional Information (Detail)	Sep. 30, 2014	Dec. 31, 2013
		Predecessor [Member]
Schedule Of Operating Leases Future Minimum Payments Receivable [Line Items]	'	'
Percentage of total future minimum lease payments	44.00%	7.90%

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Apr. 20, 2014

Sep. 30, 2013

Apr. 20, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Jun. 30, 2013

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Central Fairwinds [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Range 1 [Member]

Range 2 [Member]

Range 3 [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

Central Fairwinds [Member]

Predecessor [Member]

Washington Group Plaza [Member]

2013 [Member]

2013 [Member]

2014 [Member]

2014 [Member]

2015 [Member]

2015 [Member]

Predecessor [Member]

Other Commitments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property management fee, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.75%

1.75%

1.75%

Property management fee, per month amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Property management fee in excess of net operating income, percentage

'

'

'

'

'

'

'

'

'

'

15.00%

'

'

'

15.00%

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

Minimum property management fee

'

'

'

'

'

'

'

'

'

'

'

5,000,000

5,450,000

5,600,000

'

'

5,000,000

5,000,000

5,450,000

5,500,000

5,600,000

5,600,000

'

'

'

'

'

'

Property management fee, percentage of gross revenue

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

1.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

Asset management agreement initial term

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

Asset management agreement renewal term

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

Property management fees

225,719

384,615

619,497

27,265

143,764

234,882

397,297

539,460

571,420

'

'

'

'

'

'

90,745

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of leased area

'

'

'

'

'

'

'

'

'

76.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of Earn-Out Threshold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

70.00%

80.00%

90.00%

'

'

'

Stabilized capitalization rate

'

'

'

'

'

'

'

'

'

7.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Earn-Out Payment, Description

'

'

'

'

'

'

'

'

'

'The Company will make any additional Earn-Out Payment within 30 days of the end of the Earn-Out Term based on new qualified leases entered into since the achievement of the last Earn-Out Threshold.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value of earn-out liability

8,000,000

8,000,000

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change in fair value of earn-out

($942,650)

($1,047,515)

($1,047,515)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (USD $)

0 Months Ended

0 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

Apr. 21, 2014

Sep. 30, 2014

Apr. 21, 2014

Jan. 02, 2014

Dec. 31, 2013

Dec. 31, 2012

Jan. 02, 2014

Sep. 30, 2014

Sep. 30, 2014

Jan. 02, 2014

Dec. 31, 2013

Dec. 31, 2012

Nov. 07, 2014

Jan. 02, 2014

Jan. 02, 2014

Jan. 02, 2014

Cherry Creek [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Orlando, Florida [Member]

Predecessor [Member]

Predecessor [Member]

Predecessor [Member]

Cherry Creek [Member]

Cherry Creek [Member]

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition, ownership percentage

'

71.60%

100.00%

'

'

'

'

100.00%

100.00%

57.70%

'

'

'

'

'

57.70%

Business acquisition, purchase consideration

$19,400,000

'

'

$12,000,000

'

'

$12,000,000

'

$12,020,893

'

'

'

'

$12,020,000

$12,020,000

'

Business acquisition, liabilities assumed

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

50,000,000

'

Repayment of debt

'

'

'

'

'

'

36,000,000

'

36,000,000

'

'

'

'

'

36,000,000

'

Business acquisition, deferred financing costs

'

2,919,700

'

'

1,167,666

591,765

'

'

'

1,200,000

45,533

136,597

'

'

'

1,200,000

Business acquisition, transaction costs

'

'

'

'

'

'

'

'

'

800,000

'

'

'

'

'

800,000

Business acquisition, liabilities assumed interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

Gain on existing 42.3% equity interest

'

'

'

'

'

'

'

'

4,474,644

'

'

'

'

'

4,470,000

'

Percentage of equity interest

'

'

'

'

'

'

'

42.30%

42.30%

'

'

'

'

'

'

42.30%

Expenses related to acquisition

'

'

'

'

'

'

'

806,344

806,344

'

'

'

'

'

800,000

'

Acquired property under agreement of purchase and sale

'

$189,813,558

'

'

$100,126,486

$42,171,832

'

'

'

'

$37,314,917

$38,888,332

$26,500,000

'

'

'

Purchase_Price_Allocation_on_P

Purchase Price Allocation on Preliminary Basis, and Resulting Impact on Predecessor's Equity (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Jan. 02, 2014
	Cherry Creek [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
			Cherry Creek [Member]	Subsequent Event [Member]
				Cherry Creek [Member]
Business Acquisition [Line Items]	'	'	'	'
Land	$25,745,012	$16,504,845	'	$25,745,012
Building and improvements	15,771,277	36,579,472	'	20,144,126
Lease intangible asset	12,009,085	14,619,615	'	12,009,085
Lease intangible liability	-249,409	'	'	-249,409
Net working capital assumed	-815,378	-1,233,521	'	-815,378
Fair value of assets and liabilities at acquisition	56,833,436	71,313,835	56,833,436	56,833,436
Mortgage loan obtained in connection with acquisition	'	'	'	-50,000,000
Elimination of investment in Cherry Creek	'	'	'	-4,337,899
Deferred financing costs	'	'	'	1,172,764
Net increase in equity	'	'	'	$3,668,301

Schedule_III_Real_Estate_Prope

Schedule III - Real Estate Properties and Accumulated Depreciation (Detail) (Predecessor [Member], USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

AmberGlen [Member]

AmberGlen [Member]

AmberGlen [Member]

City Center Property [Member]

Central Fairwinds [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Washington Group Plaza [Member]

Corporate Parkway [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Initial Cost to Predecessor, Encumbrances

$109,916

'

'

$23,500

'

'

$22,334

$10,000

$34,949

'

'

$19,133

Initial Cost to Predecessor, Land

30,165

'

'

8,790

'

'

3,123

1,747

12,748

'

'

3,757

Initial Cost to Predecessor, Buildings and Improvements

67,317

'

'

5,705

'

'

10,656

9,751

20,716

'

'

20,489

Costs Capitalized Subsequent to Acquisitions, Improvements

10,380

'

'

2,882

'

'

6,226

832

440

'

'

'

Gross Amount, Land

30,165

'

'

8,790

'

'

3,123

1,747

12,748

'

'

3,757

Gross Amount, Building and Improvements

77,697

'

'

8,587

'

'

16,882

10,583

21,156

'

'

20,489

Gross Amount, Total

107,862

46,256

31,115

17,377

'

'

20,005

12,330

33,904

'

'

24,246

Accumulated Amortization

$7,735

$4,084

$2,384

$2,803

'

'

$2,500

$780

$896

'

'

$756

Date of Construction

'

'

'

'

'1984

'1998

'1984

'1982

'

'1970

'1982

'2006

Date acquired

'

'

'

'2009-12

'

'

'2010-12

'2012-05

'2013-06

'

'

'2013-05

Depreciation Life for the Latest Income Statement

'

'

'

'50 years

'

'

'40 years

'40 years

'29 years

'

'

'43 years

Schedule_III_Real_Estate_Prope1

Schedule III - Real Estate Properties and Accumulated Depreciation (Parenthetical) (Detail) (Predecessor [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Predecessor [Member]	'
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]	'
Real estate assets, aggregate cost for Federal tax purpose	$135,994

Schedule_III_Summary_of_Real_E

Schedule III - Summary of Real Estate and Accumulated Depreciation (Detail) (Predecessor [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Predecessor [Member]	'	'
Real Estate Properties	'	'
Balance, beginning of year	$46,256	$31,115
Acquisitions	57,710	11,498
Capital improvements	3,896	3,643
Balance, end of year	107,862	46,256
Accumulated depreciation	'	'
Balance, beginning of year	4,084	2,384
Depreciation	3,651	1,700
Balance, end of year	$7,735	$4,084

Organization_and_Description_o3

Organization and Description of Business - Summary of Predecessor and Company's Statement of Operations (Detail) (USD $)	3 Months Ended	6 Months Ended	9 Months Ended	1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Apr. 20, 2014	Sep. 30, 2013	Apr. 20, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
				Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
Revenues:	'	'	'	'	'	'	'	'	'
Rental income	$9,036,858	$15,122,653	$23,987,891	$1,628,480	$6,222,764	$8,865,238	$12,938,686	$18,427,794	$9,991,712
Expense reimbursement	843,753	1,240,956	1,796,567	105,569	406,622	555,611	1,093,117	1,316,068	1,053,466
Other	117,809	246,772	589,631	47,198	202,990	342,859	593,724	746,716	471,280
Total Revenues	9,998,420	16,610,381	26,374,089	1,781,247	6,832,376	9,763,708	14,625,527	20,490,578	11,516,458
Operating Expenses:	'	'	'	'	'	'	'	'	'
Property operating expenses	2,782,296	4,539,478	7,304,371	510,431	1,819,634	2,764,893	4,005,302	6,021,287	4,109,993
Insurance	167,046	313,043	489,471	23,570	144,057	176,428	374,655	518,361	398,083
Property taxes	753,329	1,177,853	1,775,641	136,684	458,611	597,788	1,015,164	1,385,954	969,564
Property management fees	225,719	384,615	619,497	27,265	143,764	234,882	397,297	539,460	571,420
Acquisition costs	401,200	745,003	1,551,347	'	'	806,344	1,479,292	1,479,292	212,765
Base management fees	226,295	411,471	411,471	'	'	'	'	'	'
Stock based compensation	382,205	667,347	667,347	'	'	'	'	'	'
General and administrative	407,075	741,580	821,379	29,799	'	79,799	'	'	'
Depreciation and amortization	4,057,809	6,771,654	10,633,593	701,962	2,530,128	3,861,939	5,245,498	7,775,219	3,956,204
Total Operating Expenses	9,402,974	15,752,044	24,274,117	1,429,711	5,096,194	8,522,073	12,517,208	17,719,573	10,218,029
Operating income	595,446	858,337	2,099,972	351,536	1,736,182	1,241,635	2,108,319	2,771,005	1,298,429
Interest expense, net	-2,026,669	-4,993,283	-8,765,075	-610,378	-1,662,710	-3,771,792	-3,704,586	-5,368,016	-3,685,881
Change in fair value of earn-out	-942,650	-1,047,515	-1,047,515	'	'	'	'	'	'
Gain on equity investment	'	'	4,474,644	'	'	4,474,644	'	'	'
Net (loss)/income	-2,373,873	-5,182,461	-3,237,974	-258,842	158,246	1,944,487	-1,340,845	-4,177,293	-1,881,575
Net Loss attributable to noncontrolling interests in properties	'	-37,036	'	18,785	'	28,710	'	'	'
Net (Loss)/Income attributable to Predecessor	'	'	-1,973,197	-240,057	179,614	1,973,197	-1,280,489	'	'
Net loss attributable to Operating Partnership noncontrolling interests	693,971	1,508,097	1,508,097	'	'	'	'	'	'
Net loss attributable to stockholders	($1,767,198)	($3,711,400)	($3,711,400)	'	'	'	'	($4,132,925)	($1,595,094)

Real_Estate_Investments_Schedu4

Real Estate Investments - Schedule of Realized Gain Loss on Investments (Detail) (USD $)	0 Months Ended		0 Months Ended			0 Months Ended	9 Months Ended
	Apr. 21, 2014	Sep. 30, 2014	Jan. 02, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 02, 2014	Sep. 30, 2014
		Cherry Creek [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]	Predecessor [Member]
						Cherry Creek [Member]	Cherry Creek [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'
Fair value of assets and liabilities acquired	'	$56,833,436	'	$71,313,835	'	'	$56,833,436
Less existing mortgage in Cherry Creek	'	'	'	'	'	-36,000,000	-36,000,000
Fair value of assets and liabilities acquired, after mortgage	'	'	'	'	'	'	20,833,436
Less cash paid to seller	-19,400,000	'	-12,000,000	'	'	-12,000,000	-12,020,893
Fair value of 42.3% equity interest	'	'	'	'	'	'	8,812,543
Carrying value of investment in Cherry Creek	'	'	'	-4,337,899	-4,882,753	'	-4,337,899
Gain on existing 42.3% equity interest	'	'	'	'	'	'	$4,474,644

Real_Estate_Investments_Schedu5

Real Estate Investments - Schedule of Realized Gain Loss on Investments (Parenthetical) (Detail) (Predecessor [Member], Cherry Creek [Member])	Sep. 30, 2014
Predecessor [Member] | Cherry Creek [Member]	'
Business Acquisition [Line Items]	'
Percentage of equity interest	42.30%

Lease_Intangibles_Additional_I

Lease Intangibles - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Prior period reclassification adjustment of lease intangibles and accounts payable and accrued liabilities	$649,192
Impact to net income	$0

Debt_Additional_Information_De

Debt - Additional Information (Detail) (Plaza 25 [Member], USD $)	Jun. 13, 2014
In Millions, unless otherwise specified
Plaza 25 [Member]	'
Debt Instrument [Line Items]	'
Maximum amount of Revolving Credit Facility	$30

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended	9 Months Ended		1 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2016
	sqft	sqft	sqft		Scenario, Forecast [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'	'	'
Hedges or derivatives	$0	$0	$0	'	'
Fair value, discount rate	'	'	8.00%	'	'
Approximate square feet of additional lease space	17,000	17,000	17,000	'	'
Percentage of lease space occupancy	'	'	76.00%	'	89.00%
Average net effective rent per square foot	'	'	14	'	'
Incremental operating costs per square foot	'	'	4	'	'
Estimated fair value of earn-out liability	8,000,000	8,000,000	8,000,000	'	'
Change in fair value of earn-out	-942,650	-1,047,515	-1,047,515	'	'
Percentage of increase or decrease in potential gain or loss by varying the significant unobservable inputs	'	'	10.00%	'	'
Potential loss by varying the significant unobservable inputs	'	'	100,000	'	'
Potential gain by varying the significant unobservable inputs	'	'	100,000	'	'
Mortgage loans payable, fair value	$172,700,000	$172,700,000	$172,700,000	$88,500,000	'

Earnings_per_Share_Computation

Earnings per Share - Computation of Basic and Diluted Earnings per Share (Detail) (USD $)	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
Numerator for loss per share - basic and diluted	'	'	'
Net loss	($2,373,873)	($5,182,461)	($3,237,974)
Less: Net loss attributable to noncontrolling interests in properties	-87,296	'	-8,326
Less: Net loss attributable to Predecessor	'	'	-1,973,197
Less: Net loss attributable to Operating Partnership unitholders' noncontrolling interests	693,971	1,508,097	1,508,097
Numerator for loss per share - basic and diluted	($1,767,198)	($3,711,400)	($3,711,400)
Denominator for loss per share - basic and diluted	8,192,915	'	8,133,940
Basic and diluted loss per share	($0.22)	'	($0.46)

Stockholders_Equity_Additional

Stockholder's Equity - Additional Information (Detail) (USD $)	0 Months Ended		9 Months Ended	0 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	9-May-14	Apr. 21, 2014	Sep. 30, 2014	Apr. 21, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
				Restricted Stock Units (RSUs) [Member]	Restricted Stock Units (RSUs) [Member]	Restricted Stock Units (RSUs) [Member]	Restricted Stock Units (RSUs) [Member]
						Installment	Directors and Non-Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Common stock issued in IPO, shares	'	5,800,000	5,800,000	'	'	'	'
Net proceeds from IPO	$9.10	$63.40	$63.40	'	'	'	'
Shares issued to underwriters under overallotment option	782,150	'	782,150	'	'	'	'
Additional net proceeds from IPO	'	'	9.1	'	'	'	'
Operating partnership units	'	'	3,251,904	'	'	'	'
Percentage of operating partnership unit	'	'	28.40%	'	'	'	'
Partnership unit, description	'	'	'Beginning on or after the date which is 12 months after the later of the completion of this offering or the date on which a person first became a holder of common units, each limited partner and assignees of limited partners will have the right, subject to the terms and conditions set forth in the partnership agreement, to require the Operating Partnership to redeem all or a portion of the common units held by such limited partner or assignee in exchange for a cash amount per common unit equal to the value of one share of common stock, determined in accordance with and subject to adjustment under the partnership agreement. The Company has the sole option at its discretion to redeem the common units by issuing common stock on a one for one basis.	'	'	'	'
Maximum number of shares issued under Equity Incentive Plan	'	'	1,263,580	'	'	'	'
Restricted stock units granted to executive officers, directors and non-executive employees of the Advisor	'	'	'	352,272	'	'	30,100
Restricted stock units grant date fair value	'	'	'	$12.50	'	'	'
Restricted stock units, value	'	'	'	4.4	'	'	'
Net compensation expense	'	'	'	'	$0.40	$0.70	'
Number of annual installments for award vesting	'	'	'	'	'	3	'