City Office REIT (CIO) 10-K 25 Feb 21 2020 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Registrant Name	CITY OFFICE REIT, INC.
Entity Central Index Key	0001593222
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		43,397,117
Entity Address, State or Province	BC
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-36409
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	98-1141883
Entity Address, City or Town	Vancouver
Entity Address, Address Line One	666 Burrard Street
Entity Address, Address Line Two	Suite 3210
Entity Address, Postal Zip Code	V6C 2X8
City Area Code	604
Local Phone Number	806-3366
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Public Float			$ 427.6
ICFR Auditor Attestation Flag	true
Common Stock [Member]
Document Information [Line Items]
Trading Symbol	CIO
Security Exchange Name	NYSE
Title of 12(b) Security	Common Stock
6.625% Series A Cumulative Redeemable Preferred Stock [Member]
Document Information [Line Items]
Trading Symbol	CIO.PrA
Security Exchange Name	NYSE
Title of 12(b) Security	6.625% Series A Cumulative Redeemable Preferred Stock, $0.01 par value per share

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Real estate properties
Land	$ 204,289	$ 230,034
Building and improvement	777,184	784,636
Tenant improvement	104,694	94,218
Furniture, fixtures and equipment	642	285
Real estate properties, gross	1,086,809	1,109,173
Accumulated depreciation	(131,220)	(101,835)
Real estate properties, net	955,589	1,007,338
Cash and cash equivalents	25,305	70,129
Restricted cash	20,646	17,394
Rents receivable, net	32,968	32,112
Deferred leasing costs, net	16,829	12,393
Acquired lease intangible assets, net	44,143	67,533
Other assets	15,758	17,061
Assets held for sale	46,054	4,514
Total Assets	1,157,292	1,228,474
Liabilities:
Debt	677,242	607,250
Accounts payable and accrued liabilities	25,414	28,786
Deferred rent	7,295	6,593
Tenant rent deposits	4,801	5,658
Acquired lease intangible liabilities, net	6,035	8,194
Other liabilities	18,099	22,794
Liabilities related to assets held for sale	531	67
Total Liabilities	739,417	679,342
Commitments and Contingencies (Note 10)
Equity:
6.625% Series A Preferred stock, $0.01 par value per share, 5,600,000 shares authorized, 4,480,000 issued and outstanding as of December 31, 2020 and 2019	112,000	112,000
Common stock, $0.01 par value, 100,000,000 shares authorized, 43,397,117 and 54,591,047 shares issued and outstanding as of December 31, 2020 and 2019 respectively	433	545
Additional paid-in capital	479,411	577,131
Accumulated deficit	(172,958)	(142,383)
Accumulated other comprehensive (loss)/income	(1,960)	715
Total Stockholders' Equity	416,926	548,008
Non-controlling interests in properties	949	1,124
Total Equity	417,875	549,132
Total Liabilities and Equity	$ 1,157,292	$ 1,228,474

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock, Dividend rate percentage	6.625%	6.625%
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,600,000	5,600,000
Preferred stock, shares issued	4,480,000	4,480,000
Preferred stock, shares outstanding	4,480,000	4,480,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	43,397,117	54,591,047
Common stock, shares outstanding	43,397,117	54,591,047

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Rental and other revenues	$ 160,840	$ 156,297	$ 129,484
Operating expenses:
Property operating expenses	58,312	57,316	49,872
General and administrative	10,690	11,066	8,137
Depreciation and amortization	60,367	59,159	52,352
Impairment of real estate			3,497
Total operating expenses	129,369	127,541	113,858
Operating income	31,471	28,756	15,626
Interest expense:
Contractual interest expense	(26,363)	(28,401)	(22,316)
Amortization of deferred financing costs and debt fair value	(1,326)	(1,325)	(1,621)
Interest expense, net	(27,689)	(29,726)	(23,937)
Net gain on sale of real estate property	1,347	3,412	46,980
Net income	5,129	2,442	38,669
Net income attributable to non-controlling interests in properties	(602)	(644)	(501)
Net income attributable to the Company	4,527	1,798	38,168
Preferred stock distributions	(7,420)	(7,420)	(7,420)
Net (loss)/income attributable to common stockholders	$ (2,893)	$ (5,622)	$ 30,748
Net (loss)/income per common share:
Basic	$ (0.06)	$ (0.13)	$ 0.82
Diluted	$ (0.06)	$ (0.13)	$ 0.82
Weighted average common shares outstanding:
Basic	47,223	43,997	37,321
Diluted	47,223	43,997	37,670
Dividend distributions declared per common share	$ 0.60	$ 0.94	$ 0.94

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 5,129	$ 2,442	$ 38,669
Other comprehensive (loss)/income:
Unrealized cash flow hedge (loss)/gain	(3,003)	821
Amounts reclassified to interest expense	328	(106)
Other comprehensive income/(loss)	(2,675)	715
Comprehensive income	2,454	3,157	38,669
Comprehensive income attributable to non-controlling interests in properties	(602)	(644)	(501)
Comprehensive income attributable to the Company	$ 1,852	$ 2,513	$ 38,168

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Total stockholders' equity [Member]	Non-controlling Interests in Properties [Member]
Beginning balance at Dec. 31, 2017	$ 359,832	$ 112,000	$ 360	$ 334,241	$ (86,977)		$ 359,624	$ 208
Beginning balance, shares at Dec. 31, 2017		4,480,000	36,012,000
Restricted stock award grants and vesting, values	1,330		$ 1	1,641	(312)		1,330
Restricted stock award grants and vesting, shares			121,000
Net proceeds from sale of common stock, values	$ 42,902		$ 34	42,868			42,902
Net proceeds from sale of common stock, shares			3,411,000
Common stock repurchased, shares	0
Common stock dividend distribution declared	$ (35,567)				(35,567)		(35,567)
Preferred stock dividend distribution declared	(7,420)				(7,420)		(7,420)
Minority interest buyout	(1,139)			(1,624)			(1,624)	485
Contributions	297							297
Distributions	(527)							(527)
Net income	38,669				38,168		38,168	501
Ending balance at Dec. 31, 2018	398,377	$ 112,000	$ 395	377,126	(92,108)		397,413	964
Ending balance, shares at Dec. 31, 2018		4,480,000	39,544,000
Restricted stock award grants and vesting, values	907		$ 1	1,280	(374)		907
Restricted stock award grants and vesting, shares			147,000
Net proceeds from sale of common stock, values	$ 198,874		$ 149	198,725			198,874
Net proceeds from sale of common stock, shares			14,900,000
Common stock repurchased, shares	0
Common stock dividend distribution declared	$ (44,279)				(44,279)		(44,279)
Preferred stock dividend distribution declared	(7,420)				(7,420)		(7,420)
Contributions	112							112
Distributions	(596)							(596)
Net income	2,442				1,798		1,798	644
Other comprehensive income (loss)	715					$ 715	715
Ending balance at Dec. 31, 2019	549,132	$ 112,000	$ 545	577,131	(142,383)	715	548,008	1,124
Ending balance, shares at Dec. 31, 2019		4,480,000	54,591,000
Restricted stock award grants and vesting, values	2,290		$ 2	2,531	(243)		2,290
Restricted stock award grants and vesting, shares			170,000
Common stock repurchased, values	$ (100,365)		$ (114)	(100,251)			(100,365)
Common stock repurchased, shares	11,363,851		(11,364,000)
Common stock dividend distribution declared	$ (27,439)				(27,439)		(27,439)
Preferred stock dividend distribution declared	(7,420)				(7,420)		(7,420)
Contributions	52							52
Distributions	(829)							(829)
Net income	5,129				4,527		4,527	602
Other comprehensive income (loss)	(2,675)					(2,675)	(2,675)
Ending balance at Dec. 31, 2020	$ 417,875	$ 112,000	$ 433	$ 479,411	$ (172,958)	$ (1,960)	$ 416,926	$ 949
Ending balance, shares at Dec. 31, 2020		4,480,000	43,397,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows from Operating Activities:
Net income	$ 5,129	$ 2,442	$ 38,669
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	60,367	59,159	52,352
Amortization of deferred financing costs and debt fair value	1,326	1,325	1,621
Amortization of above and below market leases	(17)	(27)	(182)
Straight-line rent/expense	(3,389)	(5,233)	(4,703)
Non-cash stock compensation	2,332	1,742	1,416
Net gain on sale of real estate property	(1,347)	(3,412)	(46,980)
Impairment of real estate			3,497
Changes in non-cash working capital:
Rents receivable, net	(182)	(1,061)	(1,602)
Other assets	53	(330)	(353)
Accounts payable and accrued liabilities	(4,194)	(5,538)	(910)
Deferred rent	702	1,022	(834)
Tenant rent deposits	(857)	(590)	196
Net Cash Provided By Operating Activities	59,923	49,499	42,187
Cash Flows to Investing Activities:
Additions to real estate properties	(26,352)	(16,002)	(23,586)
Acquisition of real estate		(108,358)	(254,514)
Net proceeds from sale of real estate	6,340	46,364	84,839
Deferred leasing costs	(7,791)	(3,926)	(4,048)
Net Cash Used In Investing Activities	(27,803)	(81,922)	(197,309)
Cash Flows (to)/from Financing Activities:
Repurchases of common stock	(100,365)
Proceeds from sale of common stock		198,874	42,902
Debt issuance and extinguishment costs		(1,008)	(2,963)
Proceeds from borrowings	130,000	154,750	398,749
Repayment of borrowings	(61,330)	(216,336)	(241,820)
Shares withheld for payment of taxes on restricted stock unit vesting	(42)	(832)	(87)
Minority interest buyout			(1,140)
Contributions from non-controlling interests in properties .	52	112	297
Distributions to non-controlling interests in properties	(829)	(596)	(527)
Dividend distributions paid to stockholders	(41,178)	(48,163)	(42,158)
Net Cash (Used In)/Provided By Financing Activities	(73,692)	86,801	153,253
Net (Decrease)/Increase in Cash, Cash Equivalents and Restricted Cash	(41,572)	54,378	(1,869)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	87,523	33,145	35,014
Cash, Cash Equivalents and Restricted Cash, End of Period	45,951	87,523	33,145
Reconciliation of Cash, Cash Equivalents and Restricted Cash:
Cash and Cash Equivalents, End of Period	25,305	70,129	16,138
Restricted Cash, End of Period	20,646	17,394	17,007
Cash, Cash Equivalents and Restricted Cash, End of Period	45,951	87,523	33,145
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	26,454	28,479	22,131
Purchase of additions in real estate properties included in accounts payable	7,640	6,489	6,791
Purchase of deferred leasing costs included in accounts payable	$ 289	603	$ 654
Debt assumed on acquisition of real estate		$ 22,473

Organization and Description of

Organization and Description of Business	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
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 of limited partnership interest in the Operating Partnership (“common units”). 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 Operating Partnership’s partnership agreement The Company has elected to be taxed and will continue to operate in a manner that will allow it to continue to qualify as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Code”). 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, for years prior to 201 8

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Basis of Preparation and Summary of Significant Accounting Policies The accompanying consolidated 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 subsidiaries. All significant intercompany transactions and balances have been eliminated on consolidation. Use of Estimates The Company 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 consolidated financial statements in conformity with GAAP. 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 impairment of long-lived assets and the useful lives of long-lived assets. These estimates and assumptions are based on our best estimates and judgment. The Company evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management adjusts such estimates when facts and circumstances dictate. Actual results could differ materially from those estimates. 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 consists of cash held in escrow by lenders pursuant to certain lender agreements and cash received from contracted building sales. Rent Receivable, Net The Company continuously monitors collections from tenants and makes a provision for estimated losses based upon historical experience and any specific tenant collection issues that the Company has identified. Business Combinations When a property is acquired, management considers the substance of the agreement in determining whether the acquisition represents an asset acquisition or a business combination. Upon acquisitions of properties that constitutes a business, 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 non-controlling 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” lease-up lease-up The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place non-cancelable non-cancelable The fair value of acquired in-place lease-up in-place 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 a 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. 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. Tenant improvements are deferred and amortized on a straight-line basis over the terms of the respective lease. 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. 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. Leases Effective January 1, 2019, the Company adopted FASB ASU 2016-02, Leases (ASC 842), and elected the effective date method for the transition. ASU 2016-02 requires lessors to classify leases as a sales-type, direct financing, or operating lease and requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. right-of-use Right-of-use Right-of-use Right-of-use non-lease 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 28-50 Furniture, fixtures and equipment 4-10 Expenditures for maintenance and repairs are charged to operations as incurred. 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 determined 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 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. Concentration of Credit Risk The Company 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 Company has never experienced any losses related to these balances. Income Taxes The Company has elected to be taxed, and intends to continue to operate in a manner that will allow it to continue to qualify, as a REIT. To qualify as a REIT, the Company is required to distribute dividends equal to at least 90% of its REIT taxable income (computed without regard to the deduction for dividends paid and excluding 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, for years prior to 2018, 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. From time to time, the Company has elected to treat certain subsidiaries as TRSs. A TRS is treated as a regular corporation and is subject to federal income tax and applicable state income and franchise taxes at regular corporate rates. Non-controlling The Company follows the provisions pertaining to non-controlling non-controlling non-controlling non-controlling 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 period. Earnings per Common Share The Company calculates net income per common share based upon the weighted average shares outstanding for the years ended December 31, 2020 and December 31, 2019 and D e Derivative Instruments and Hedging Activities The Company enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. The Company does not enter into derivative or interest rate transactions for speculative purposes. The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on whether the Company 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. For derivatives that qualify as hedging instruments, a company must designate the instruments as a fair value hedge, a cash flow hedge, or a hedge of a net investment in a foreign operation. Fair Value of Financial Instruments ASC 820-10, Fair Value Measurements and Disclosures (“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 Level Deferred Leasing 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. Segment Reporting The Company operates in one industry segment, commercial real estate. Recent Accounting Pronouncements In March 2020, the Financial Accounting Standards Board established Topic 848, Facilitation of the Effects of Reference Rate Reform on Financial Reporting, by issuing Accounting Standards Update (“ASU”) No. 2020-04. ASU 2020-04 provides companies with optional expedients and exceptions to the guidance on contract modifications and hedge accounting to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. For contracts affected by reference rate reform, if certain criteria are met, companies can elect to not remeasure contracts at the modification date or reassess a previous accounting conclusion. Companies can also elect various optional expedients that would allow them to continue applying hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met. Further, in January 2021, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) No. 2021-01, Reference Rate Reform (Topic 848). ASU 2021-01 clarifies the scope of Topic 848 so that derivatives affected by the discounting transition are explicitly eligible for certain optional expedients and exceptions in Topic 848. ASU 2020-04 and ASU 2021-01 can be applied as of the beginning of the interim period that includes March 12, 2020, however, the guidance will only be available for optional use through December 31, 2022. The new standard applies prospectively to contract modifications and hedging relationships and may be elected over time as reference rate reform activities occur. The Company has not yet adopted the standard and continues to evaluate the impact of ASU 2020-04 and ASU 2021-01 on its consolidated financial statements and may elect optional expedients in future periods as reference rate reform activities o c On April 10, 2020, the Financial Accounting Standards Board (the “FASB”) issued a Staff Q&A to respond to some frequently asked questions about accounting for rent relief related to the effects of the COVID-19 pandemic. Consequently, for rent relief related to the effects of the COVID-19 pandemic, an entity will not be required to analyze each contract to determine whether enforceable rights and obligations for abatements exist in the contract and can elect to apply or not apply the lease modification guidance to those contracts. Entities may make the elections for any lessor-provided rent relief related to the effects of the COVID-19 pandemic (e.g., deferrals of lease payments, reduced future lease payments, etc.) as long as the rent relief does not result in a substantial increase in the rights of the lessor or the obligations of the lessee. To date, the Company granted rent relief to certain tenants, most often in the form of a rent deferral or rent abatement. For rent relief granted that did not result in a substantial increase in the rights of the lessor or the obligations of the lessee, the Company elected to not apply the lease modification guidance and instead account for the rent relief as though the enforceable rights and obligations for the relief existed in the original contract. For rent relief granted that resulted in a substantial increase in the rights of the lessor or the obligations of the lessee, the Company applied the lease modification guidance to the applicable contracts.

Rents Receivable, Net

Rents Receivable, Net	12 Months Ended
	Dec. 31, 2020
Text Block [Abstract]
Rents Receivable, Net	3. Rents Receivable, Net The Company’s rents receivable is comprised of the following components (in thousands): December 31, December 31, Billed receivables $ 2,239 $ 2,880 Straight-line receivables 30,729 29,232 Total rents receivable $ 32,968 $ 32,112 As of December 31, 2020, the Company’s allowance for doubtful accounts was $0.1

Real Estate Investments

Real Estate Investments	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Real Estate Investments	4. Real Estate Investments Acquisitions During the years ended December 31, 2020, Property Date Acquired Percentage Owned 7601 Tech (1) September 2019 100 % Cascade Station June 2019 100 % Canyon Park February 2019 100 % Camelback Square December 2018 100 % Greenwood Blvd December 2018 100 % Circle Point Land December 2018 100 % The Quad July 2018 100 % Circle Point July 2018 100 % Pima Center April 2018 100 % (1) Denver Tech is comprised of 7601 Tech and 7595 Tech (formerly “DTC Crossroads”). Each of the foregoing acquisitions were accounted for as asset acquisitions. The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2019 (in thousands): Canyon Cascade 7601 December 31, Land $ 7,098 $ — $ 10,865 $ 17,963 Buildings and improvements 36,619 25,141 25,677 87,437 Tenant improvements 1,797 2,080 3,858 7,735 Lease intangible assets 8,109 3,134 7,401 18,644 Other assets 10 3,164 293 3,467 Debt — (697 ) — (697 ) Accounts payable and other liabilities (1,266 ) (186 ) (668 ) (2,120 ) Lease intangible liabilities (1,297 ) (220 ) (79 ) (1,596 ) Net assets acquired $ 51,070 $ 32,416 $ 47,347 $ 130,833 Consideration paid on acquisitions was in the form of cash and debt. The acquisition of the Cascade Station property was partially funded through an assumption of debt with a principal amount of $22.5 The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2018 (in thousands): Pima Circle The Circle Point Greenwood Camelback December 31, Land $ — $ 8,744 $ 8,079 $ 4,937 $ 3,945 $ 11,738 $ 37,443 Buildings and improvements 42,235 33,708 38,060 — 23,741 35,532 173,276 Tenant improvements 2,898 5,393 1,798 — 2,278 2,390 14,757 Lease intangible assets 10,691 10,299 4,209 — 4,578 4,304 34,081 Other assets 95 25 15 — 15 10 160 Accounts payable and other liabilities (337 ) (1,157 ) (527 ) (72 ) (96 ) (421 ) (2,610 ) Lease intangible liabilities (129 ) (390 ) (1,247 ) — — (827 ) (2,593 ) Net assets acquired $ 55,453 $ 56,622 $ 50,387 $ 4,865 $ 34,461 $ 52,726 $ 254,514 Sale of Real Estate Property On July 23, 2020, the Company sold a land parcel at the Circle Point property in Denver, Colorado for $6.5 million, resulting in an aggregate gain of $1.3 million net of disposal-related costs, which has been classified as net gain on sale of real estate property in the consolidated statements of operations. On December 12, 2019, the Company sold the Logan Tower property in Denver, Colorado for $ million, resulting in an aggregate gain of $ million net of disposal-related costs, which has been classified as net gain on sale of real estate property in the consolidated statements of operations. On May 7, 2019, the Company sold the 10455 Pacific Center building of t h $16.5 million, resulting in an aggregate gain of $0.5 million net of disposal-related costs, which has been classified as net gain on sale of real estate property in the consolidated statements of operations. On February 7, 2019, the Company sold the Plaza 25 property in Denver, Colorado for $17.9 million. No gain or loss was recognized on the sale as the property was carried at fair value less cost to sell on the date of disposition. On March , , the Company sold the Washington Group Plaza property in Boise, Idaho for $ million, resulting in an aggregate net gain of $ million, net of $ million in costs, which has been classified as net gain on sale of real estate property in the consolidated statements of operations. Assets Held for Sale On November 18 , 2020 , the Company entered into a purchase and sale agreement to sell the Cherry Creek property for $95.0 million. The Company determined that the property met the criteria for classification as held for sale as of December 31 , 2020 . Refer to Note 13 “Subsequent Events” to the accompanying consolidated financial statements for further information. The property was classified as held for sale as of December 31, 2020 (in thousands): Cherry Creek December 31, Real estate properties, net $ 40,849 Deferred leasing costs, net 150 Acquired lease intangible assets, net 2,256 Rents receivable, prepaid expenses and other assets 2,799 Assets held for sale $ 46,054 Accounts payable, accrued expenses, deferred rent and tenant rent deposits $ (531 ) Liabilities related to assets held for sale $ (531) On May 10, 2019, the Company entered into a purchase and sale agreement to sell a land parcel at the Circle Point property for $6.5 The property has been classified as held for sale as of December 31, 2019 (in thousands): Circle Point Land December 31, Real estate properties, net $ 4,514 Assets held for sale $ 4,514 Accounts payable, accrued expenses, deferred rent and tenant rent deposits $ (67 ) Liabilities related to assets held for sale $ (67 )

Lease Intangibles

Lease Intangibles	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Lease Intangibles	5. Lease Intangibles Lease intangibles and the value of assumed lease obligations as of December 31, 2020 and December 31, 2019 were comprised as follows (in thousands): Lease Intangible Assets Lease Intangible Liabilities December 31, 2020 Above Market In Place Leases Leasing Total Below Below Total Cost $ 14,894 $ 80,259 $ 30,284 $ 125,437 $ (13,093) $ (138) $ (13,231) Accumulated amortization (8,497 ) (55,636 ) (17,161 ) (81,294 ) 7,152 44 7,196 $ 6,397 $ 24,623 $ 13,123 $ 44,143 $ (5,941) $ (94) $ (6,035) Lease Intangible Assets Lease Intangible Liabilities December 31, 2019 Above Market In Place Leases Leasing Total Below Below Total Cost $ 15,242 $ 87,320 $ 36,048 $ 138,610 $ (13,878) $ (138) $ (14,016) Accumulated amortization (6,704 ) (48,229 ) (16,144 ) (71,077 ) 5,782 40 5,822 $ 8,538 $ 39,091 $ 19,904 $ 67,533 $ (8,096) $ (98) $ (8,194) The estimated aggregate amortization expense for lease intangibles for the five succeeding years and in the aggregate are as follows (in thousands): 2021 $ 13,632 2022 8,229 2023 5,355 2024 3,040 2025 2,659 Thereafter 5,193 $ 38,108

Debt

Debt	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Debt	6. Debt The following table summarizes the outstanding indebtedness as of December 31, 2020 and 2019 (in thousands): Property December 31, 2020 December 31, Interest Rate as 2020 (1) Maturity Unsecured Credit Facility (3)(4) $ 75,000 $ — LIBOR +1.50 % (2) March 2022 Term Loan (4) 50,000 50,000 LIBOR +1.40 % (2) September 2024 Midland Life Insurance (5) 83,537 85,293 4.34 % May 2021 Mission City 47,000 47,000 3.78 % November 2027 Canyon Park (6) 40,950 40,950 4.30 % March 2027 190 Office Center 40,236 40,854 4.79 % October 2025 Circle Point 39,650 39,650 4.49 % September 2028 SanTan 33,444 34,053 4.56 % March 2027 Intellicenter 32,442 32,971 4.65 % October 2025 The Quad 30,600 30,600 4.20 % September 2028 FRP Collection 28,263 28,969 3.10 % September 2023 2525 McKinnon 27,000 27,000 4.24 % April 2027 Greenwood Blvd 22,425 22,425 3.15 % December 2025 Cascade Station 21,952 22,304 4.55 % May 2024 5090 N . 21,640 22,000 3.92 % January 2027 AmberGlen 20,000 20,000 3.69 % May 2027 Lake Vista Pointe 17,375 17,717 4.28 % August 2024 Central Fairwinds 17,127 17,534 3.15 % June 2024 FRP Ingenuity Drive 16,736 17,000 4.44 % December 2024 Carillon Point 15,585 15,972 3.10 % October 2023 Total Principal 680,962 612,292 Deferred financing costs, net (4,195 ) (5,660 ) Unamortized fair value adjustments 475 618 Total $ 677,242 $ 607,250 (1) All interest rates are fixed interest rates with the exception of the Unsecured Credit Facility (“Unsecured Credit Facility”) and the Term Loan (as defined herein), as explained in footnotes 3 and 4 below. (2) As of December 31, 2020, the one-month (3) In March 2018, the Company entered into the Credit Agreement 2022 March 2023 (4) In September 2019, the Company entered into a five-year $50 30-day (5) The mortgage loan is cross-collateralized by Cherry Creek, City Center and 7595 Tech (formerly “DTC Crossroads”). In February 2021, the loan balance of (6) The mortgage loan anticipated repayment date (“ARD”) is March 1, 2027. The final scheduled maturity date can be extended up to 5 years beyond the ARD. If the loan is not paid off at ARD, loan’s interest rate shall be adjusted to the greater of (i) the initial interest rate plus 200 basis points or (ii) the yield on the five year “on the run” treasury reported by Bloomberg market data service plus 450 basis points. The scheduled principal repayments of mortgage payable as of December 31, 2020 are as follows (in thousands): 2021 $ 89,304 2022 81,529 2023 48,529 2024 124,725 2025 92,036 Thereafter 244,839 $ 680,962

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	7. 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 In September 2019, the Company entered into the five-year Interest Rate Swap for a notional amount of $50 million. Pursuant to the Interest Rate Swap, the Company will pay a fixed rate of approximately 1.27% of the notional amount annually, payable monthly, and receive floating rate 30-day The Interest Rate Swap has been designated and qualifies as a cash flow hedge and has been recognized on the consolidated balance sheets at fair value. The fair value of the Interest Rate Swap has been classified as a Level 2 fair value measurement. Gains and losses resulting from changes in the fair value of derivatives that have been designated and qualify as cash flow hedges are reported as a component of other comprehensive income and reclassified into earnings in the periods during which the hedged forecasted transaction affects earnings. As of December 31, 2020, the Interest Rate Swap was reported as a liability at its fair value of approximately $2.0 As of December 31, 2019, the Interest Rate Swap was reported as an asset at its fair value of approximately $0.7 Cash and Cash Equivalents, Restricted Cash, Rents Receivable, Accounts Payable and Accrued Liabilities The Company estimates that the fair value approximates carrying value due to the relatively short-term nature of these instruments. Fair Value of Financial Instruments Not Carried at Fair Value With the exception of fixed rate mortgage loans payable, the carrying amounts of the Company’s financial instruments approximate their fair value. The Company 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 $573.6

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	8. Related Party Transactions Administrative Services Agreements On October 29, 2018, the Company entered into the First Amendment Administrative Services Agreement will be $ for the first twelve months following the Effective Date and thereafter an amount equal to % of the management fee paid to SCRE II by the fund managed by SCRE II. During the years ended December 31, 2020, 2019, and 2018, the Company earned $ million, $ million, and $ million, respectively, in administrative services performed for SCRE II and its affiliates. Also during the year ended December 31, 2019, the Company was assigned a purchase contract which had been entered into by an entity affiliated with principals of Second City, which principals are also officers of the Company. The Company subsequently assigned the purchase contract to a third party. The Company paid no consideration to the related party for the contract other than return of deposits which the Company subsequently recovered from a third party in addition to an assignment fee. The Company recognized income of $2.6 On July 31, 2019, an indirect, wholly-owned subsidiary of the Company entered into an administrative services agreement e Minority Interest Buy Out On August 1, 2018, the Company signed an agreement with Second City Capital Partners II, Limited Partnership (“SCCP”) whereby SCCP agreed to sell its seven percent

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Leases	9. Leases Lessor Accounting The Company is focused on acquiring, owning a n classified as operating leases. Rental income related to such leases is recognized on a straight-line basis over the remaining lease term. The Company’s total revenue includes fixed base rental payments provided under the lease and variable payments which principally consist of tenant expense reimbursements for certain property operating expenses. The Company elected the practical expedient to account for its lease and non-lease e The Company recognized fixed and variable lease payments for the years ended December 31, 2020 and December 31, 2019 as follows (in thousands): Years Ended 2020 2019 Fixed payments $ 137,247 $ 132,540 Variable payments 23,502 20,990 $ 160,749 $ 153,530 Future minimum lease payments to be received as of December 31, 2020 under noncancellable operating leases for the next five years and thereafter are as follows (in thousands): 2021 $ 125,736 2022 108,493 2023 91,708 2024 72,312 2025 56,709 Thereafter 146,488 $ 601,446 The Company’s leases may include various provisions such as scheduled rent increases, renewal options, purchase options and termination options. The majority of the Company’s leases include defined rent increase rather than variable payments based on an index or unknown rate. Lessee Accounting As a lessee, the Company has ground and office leases classified as operating leases and one office lease classified as a financing lease. As of December 31, 2020, these leases had remaining terms of 1 to 68 years and a weighted average remaining lease term of 58 years. Right-of-use December 31, December 31, Right-of-use $ 12,739 $ 13,130 Lease liability – operating leases $ 7,719 $ 8,033 Right-of-use $ 55 $ 79 Lease liability – financing leases $ 55 $ 79 Lease liabilities are measured at the commencement date based on the present value of future lease payments. One of the Company’s operating ground leases includes rental payment increases over the lease term based on increases in the Consumer Price Index (“CPI”). Changes in the CPI were not estimated as part of the measurement of the operating lease liability. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of future payments. The Company used a weighted average discount rate of 6.3% in determining its lease liabilities. The discount rates were derived from the Company’s assessment of the credit quality of the Company and adjusted to reflect secured borrowing, estimated yield curves and long-term spread adjustments. Right-of-use Operating lease expense for the years ended December 31, 2020 and 2019 was $0.9 , Future minimum lease payments to be paid by the Company as a lessee as of December 31, 2020 for the next five years and thereafter are as follows (in thousands): Operating Financing 2021 $ 552 $ 27 2022 798 27 2023 663 4 2024 597 — 2025 596 — Thereafter 26,084 — Total future minimum lease payments 29,290 58 Discount (21,571 ) (3 ) Total $ 7,719 $ 55

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies The Company is obligated under certain tenant leases to fund tenant improvements and the expansion of the underlying leased properties. 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 December 31, 2020, 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.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	11. Earnings per Share The table below is a reconciliation of the numerators and denominators of the basic and diluted EPS computations for the years ended December 31, 2020, 2019, and 2018 (in thousands, except per share amounts): Years ended December 31, 2020 2019 2018 Net income $ 5,129 $ 2,442 $ 38,669 Less: Net income attributable to noncontrolling interests in properties (602 ) (644 ) (501 ) Less: Net income attributable to Preferred stockholders (7,420 ) (7,420 ) (7,420 ) Numerator for basic and diluted EPS $ (2,893 ) $ (5,622 ) $ 30,748 Denominator for basic EPS 47,223 43,997 37,321 Dilutive effect of RSUs — — 349 Denominator for dilutive EPS $ 47,223 $ 43,997 $ 37,670 Net (loss)/income per common share: Basic $ (0.06 ) $ (0.13 ) $ 0.82 Dilutive $ (0.06 ) $ (0.13 ) $ 0.82

Stockholder's Equity

Stockholder's Equity	12 Months Ended
	Dec. 31, 2020
Federal Home Loan Banks [Abstract]
Stockholder's Equity	12. Stockholder’s Equity On June 16, 2017, the Company and the Operating Partnership previously entered into the equity distribution agreements Markets Corp. (collectively, the “Sales Agents”), pursuant to which the Company may issue and sell from time to time shares of common stock and the Company’s % Series A Preferred Stock (the “Series A Preferred Stock”) through the Sales Agents, acting as agents or principals (the “ATM Program”). On November 1, 2018, the Company and the Operating Partnership entered into amendments (the “Amendments”) to the Original Agreements (as amended by the Amendments, the “EDAs”) with each of the Sales Agents to increase the number of shares of common stock issuable under the ATM Program. Pursuant to the terms of the EDAs, the Company may issue and sell from time to time, up to shares of common stock and up to shares of Series A Preferred Stock through the Sales Agents pursuant to the ATM Program. Pursuant to the EDAs, the shares may be offered and sold through the Sales Agents in transactions that are deemed to be “at the market” offerings as defined in Rule 415 under the Securities Act, including sales made directly on the New York Stock Exchange or sales made to or through a market maker other than on an exchange or, with the prior consent of the Company, in privately negotiated transactions. The Sales Agents will be entitled to compensation of up to % of the gross proceeds of shares sold through the Sales Agents from time to time under the EDAs. The Company has no obligation to sell any of the shares under the EDAs and may at any time suspend solicitations and offers under, or terminate, the EDAs. During the year ended December 31, 2019, the Company issued shares of common stock under the ATM Program. The Company raised $ million in ag g million after deducting sales commissions and offering expenses. The Company terminated the Prior EDAs effective February 25, 2020. The Company did not issue any shares of common stock or Series A Preferred Stock under the Prior ATM Program for the period beginning on January 1, 2020 through the date the Prior EDAs were terminated. On February 26, 2020, the Company and the Operating Partnership entered into equity distribution agreements Markets Corp., RBC Capital Markets, LLC, B. Riley FBR, Inc., D.A. Davidson & Co. and Janney Montgomery Scott LLC (the “Sales Agents”) pursuant to which the Company may issue and sell from time to time up to 15,000,000 shares common stock and up to 1,000,000 Series A Preferred Stock through the Sales Agents, acting as agents or principals (the “ATM Program”). The Company did not issue any shares of common stock or Series A Preferred Stock under the ATM Program during the fiscal year ended December 31, 2020. On October 7, 2019, the Company completed a public offering pursuant to which the Company sold 6,900,000 shares of its common stock, inclusive of the overallotment option. The Company raised $95.6 Share Repurchase Plan On March 9, 2020, the Company’s Board of Directors approved a share repurchase plan authorizing the Company to repurchase up to $100 Repurchased shares of common stock will be classified as authorized and unissued shares. The Company recognizes the cost of shares of common stock it repurchases, including direct costs incurred, as a reduction in stockholders’ equity. Such reductions of stockholders equity due to the repurchases of shares of common stock will be applied first, to reduce common stock in the amount of the par value associated with the shares of common stock repurchased and second, to reduce additional paid-in During the year ended December 31, 2020, the Company completed the repurchase of 11,363,851 shares of its common stock for approximately $100.0 Common Stock and Common Unit Distributions During the year ended December 31, 2020, the Company declared aggregate cash distributions to common stockholders and common unitholders of $27.4 During the year ended December 31, 2020, the Company declared the following distributions per share and unit: Period Distribution per Declaration Date Record Date Payment Date January 1, 2020 – March 31, 2020 $ 0.15 March 25, 2020 April 9, 2020 April 24, 2020 April 1, 2020 – June 30, 2020 0.15 June 12, 2020 July 10, 2020 July 24, 2020 July 1, 2020 – September 30, 2020 0.15 September 15, 2020 October 8, 2020 October 22, 2020 October 1, 2020 – December 31, 2020 0.15 December 15, 2020 January 11, 2021 January 25, 2021 Total $ 0.60 Preferred Stock Distributions During the year ended December 31, 2020, the Company d e Equity Incentive Plan The Company has an equity incentive plan non-executive On May 2, 2019, the Company’s stockholders approved an amendment to the Equity Incentive Plan increasing the maximum number of shares of common stock that may be issued under the Equity Incentive Plan from 1,263,580 shares to 2,263,580 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 January 27, 2020, each of the Board of Directors and the Compensation Committee approved a new form of performance-based restricted unit award agreement During the year ended December 31, 2020, 147,050 restricted stock units (“RSUs”) were granted to directors, executive officers and non-executive three During the year ended December 31, 2019, 162,500 restricted stock units (“RSUs”) were granted to directors, executive officers and non-executive three During the year ended December 31, 2018, 156,375 RSUs were granted to directors, executive officers and non-executive three For the year ended December 31, 2020, 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 During the year ended December 31, 2020, 97,500 Performance RSU Awards were granted to executive officers with a fair value of $1.3 three-year o

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Events On February 10, 2021, the Company sold the Cherry Creek property in Denver, Colorado for a sales price of $95.0 Also in February 2021, the Midland Life Insurance loan balance of $83.5 million was repaid in full.

Quarterly Financial Information

Quarterly Financial Information	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	1 4 The following tables summarize certain selected quarterly financial data for 2020 and 2019 (in thousands, except per share data). Summation of the individual quarters of net income/(loss) per share may not equal annual totals due to rounding. 2020 Quarters Fourth Third Second First Revenue $ 39,840 $ 41,261 $ 39,617 $ 40,122 Net income 461 3,039 623 1,006 Net (loss)/income attributable to common stockholders (1,482 ) 1,031 (1,411 ) (1,031 ) Net (loss)/income per share (0.03 ) 0.02 (0.03 ) (0.02 ) 2019 Quarters Fourth Third Second First Revenue $ 39,060 $ 38,946 $ 41,171 $ 37,120 Net income/(loss) 2,988 (947 ) 1,321 (920 ) Net income/(loss) attributable to common stockholders 987 (2,966 ) (699 ) (2,944 ) Net income/(loss) per share 0.02 (0.07 ) (0.02 ) (0.07 )

Schedule III - Real Estate Prop

Schedule III - Real Estate Properties and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2020
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III - Real Estate Properties and Accumulated Depreciation	City Office REIT, Inc. SCHEDULE III – REAL ESTATE PROPERTIES AND ACCUMULATED DEPRECIATION December 31, 2020 (In thousands) Intial Costs to Company Costs Gross Amount at Which Carried as of December 31, 2020 (1) Accumulated Year of Year Description Encumbrances (2) Land Buildings and Improvements Land Building and Total (3) AmberGlen $ 20,000 $ 6,546 $ 3,490 $ 2,919 $ 6,546 $ 6,409 $ 12,955 $ 3,226 1984-1998 2009 City Center 22,492 3,123 10,656 10,321 3,123 20,977 24,100 8,397 1984 2010 Central Fairwinds 17,127 1,747 9,751 6,833 1,747 16,584 18,331 5,072 1982 2012 Lake Vista Pointe 17,375 4,115 20,600 196 4,115 20,796 24,911 6,128 2007 2014 Florida Research Park (4) 44,999 11,446 56,475 3,518 11,446 59,993 71,439 11,562 1999 2014; 2016 Superior Pointe — 3,153 19,834 1,971 3,153 21,805 24,958 4,372 2000 2015 Denver Tech (5) 15,142 18,002 52,719 8,397 18,002 61,116 79,118 6,901 1999; 1997 2015; 2019 190 Office Center 40,236 7,162 39,690 1,609 7,162 41,299 48,461 6,357 2001 2015 Intellicenter 32,442 5,244 34,278 87 5,244 34,365 39,609 5,765 2008 2015 Carillon Point 15,585 5,172 17,316 227 5,172 17,543 22,715 4,040 2007 2016 Park Tower — 3,479 68,656 16,138 3,479 84,794 88,273 13,348 1973 2016 5090 N 40th St 21,640 6,696 32,123 3,213 6,696 35,336 42,032 4,136 1988 2016 SanTan 33,444 6,803 37,187 4,999 6,803 42,186 48,989 7,314 2000-2003 2016 2525 McKinnon 27,000 10,629 34,515 2,396 10,629 36,911 47,540 3,949 2003 2017 Mission City 47,000 25,741 41,474 8,756 25,741 50,230 75,971 9,010 1990-2007 2017 Sorrento Mesa — 34,305 36,726 4,143 34,305 40,869 75,174 6,287 1985-2001 2017 Papago Tech — 10,746 19,762 775 10,746 20,537 31,283 3,193 1993-1995 2017 Pima Center — — 45,133 2,431 - 47,564 47,564 4,883 2006-2008 2018 Circle Point 39,650 9,320 39,101 2,995 9,320 42,096 51,416 4,934 2001 2018 The Quad 30,600 8,079 39,858 129 8,079 39,987 48,066 3,486 1982 2018 Greenwood Blvd 22,425 3,945 26,019 1,224 3,945 27,243 31,188 1,864 1997 2018 Camelback Square — 11,738 37,922 5,842 11,738 43,764 55,502 2,754 1978 2018 Canyon Park 40,950 7,098 38,416 4,197 7,098 42,613 49,711 2,537 1993; 1999 2019 Cascade Station 21,952 — 27,220 283 — 27,503 27,503 1,705 2008-2009 2019 Corporate 125,000 — — — — — — — Total $ 635,059 $ 204,289 $ 788,921 $ 93,599 $ 204,289 $ 882,520 $ 1,086,809 $ 131,220 (1) The aggregate cost for federal tax purposes as of December 31, 2020 of our real estate assets was approximately $1.1 billion. (2) Encumbrances exclude net deferred financing costs of $4.2 (3) Properties identified as held for sale at December 31, 2020 are excluded. (4) Florida Research Park is comprised of FRP Ingenuity Drive (5) Denver Tech is comprised of 7601 Tech . A summary of activity for real estate and accumulated depreciation for the years ended December 31, 2020 , and 2018 2020 2019 2018 Real Estate Properties Balance, beginning of year $ 1,109,173 $ 1,005,647 $ 776,301 Acquisitions — 113,134 225,476 Dispositions (1,993 ) (27,585 ) (5,715 ) Capital improvements 27,503 22,491 30,378 Assets held for sale (47,874 ) (4,514 ) (20,793 ) Balance, end of year $ 1,086,809 $ 1,109,173 $ 1,005,647 Accumulated Depreciation Balance, beginning of year $ 101,835 $ 70,484 $ 48,234 Depreciation 38,372 35,531 29,196 Dispositions (1,962 ) (4,180 ) (2,301 ) Depreciation on assets held for sale (7,025 ) — (4,645 ) Balance, end of year $ 131,220 $ 101,835 $ 70,484

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Preparation and Summary of Significant Accounting Policies	Basis of Preparation and Summary of Significant Accounting Policies The accompanying consolidated 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 subsidiaries. All significant intercompany transactions and balances have been eliminated on consolidation.
Use of Estimates	Use of Estimates The Company 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 consolidated financial statements in conformity with GAAP. 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 impairment of long-lived assets and the useful lives of long-lived assets. These estimates and assumptions are based on our best estimates and judgment. The Company evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management adjusts such estimates when facts and circumstances dictate. 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 and cash received from contracted building sales.
Rent Receivable, Net	Rent Receivable, Net The Company continuously monitors collections from tenants and makes a provision for estimated losses based upon historical experience and any specific tenant collection issues that the Company has identified.
Business Combinations	Business Combinations When a property is acquired, management considers the substance of the agreement in determining whether the acquisition represents an asset acquisition or a business combination. Upon acquisitions of properties that constitutes a business, 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 non-controlling 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” lease-up lease-up The fair value of above-market and below-market lease values are recorded based on the difference between the current in-place non-cancelable non-cancelable The fair value of acquired in-place lease-up in-place
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 a 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. 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. Tenant improvements are deferred and amortized on a straight-line basis over the terms of the respective lease. 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. 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.
Leases	Leases Effective January 1, 2019, the Company adopted FASB ASU 2016-02, Leases (ASC 842), and elected the effective date method for the transition. ASU 2016-02 requires lessors to classify leases as a sales-type, direct financing, or operating lease and requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. right-of-use Right-of-use Right-of-use Right-of-use non-lease
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 28-50 Furniture, fixtures and equipment 4-10 Expenditures for maintenance and repairs are charged to operations as incurred.
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 determined 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 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.
Concentration of Credit Risk	Concentration of Credit Risk The Company 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 Company has never experienced any losses related to these balances.
Income Taxes	Income Taxes The Company has elected to be taxed, and intends to continue to operate in a manner that will allow it to continue to qualify, as a REIT. To qualify as a REIT, the Company is required to distribute dividends equal to at least 90% of its REIT taxable income (computed without regard to the deduction for dividends paid and excluding 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, for years prior to 2018, 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. From time to time, the Company has elected to treat certain subsidiaries as TRSs. A TRS is treated as a regular corporation and is subject to federal income tax and applicable state income and franchise taxes at regular corporate rates.
Non-controlling Interests	Non-controlling The Company follows the provisions pertaining to non-controlling non-controlling non-controlling non-controlling
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 period.
Earnings per Common Share	Earnings per Common Share The Company calculates net income per common share based upon the weighted average shares outstanding for the years ended December 31, 2020 and December 31, 2019 and D e
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company enters into interest rate swap contracts to mitigate its interest rate risk on the related financial instruments. The Company does not enter into derivative or interest rate transactions for speculative purposes. The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on whether the Company 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. For derivatives that qualify as hedging instruments, a company must designate the instruments as a fair value hedge, a cash flow hedge, or a hedge of a net investment in a foreign operation.
Fair Value of Financial Instruments	Fair Value of Financial Instruments ASC 820-10, Fair Value Measurements and Disclosures (“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 Level
Deferred Leasing Costs	Deferred Leasing 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.
Segment Reporting	Segment Reporting The Company operates in one industry segment, commercial real estate.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In March 2020, the Financial Accounting Standards Board established Topic 848, Facilitation of the Effects of Reference Rate Reform on Financial Reporting, by issuing Accounting Standards Update (“ASU”) No. 2020-04. ASU 2020-04 provides companies with optional expedients and exceptions to the guidance on contract modifications and hedge accounting to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. For contracts affected by reference rate reform, if certain criteria are met, companies can elect to not remeasure contracts at the modification date or reassess a previous accounting conclusion. Companies can also elect various optional expedients that would allow them to continue applying hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met. Further, in January 2021, the Financial Accounting Standards Board issued Accounting Standards Update (“ASU”) No. 2021-01, Reference Rate Reform (Topic 848). ASU 2021-01 clarifies the scope of Topic 848 so that derivatives affected by the discounting transition are explicitly eligible for certain optional expedients and exceptions in Topic 848. ASU 2020-04 and ASU 2021-01 can be applied as of the beginning of the interim period that includes March 12, 2020, however, the guidance will only be available for optional use through December 31, 2022. The new standard applies prospectively to contract modifications and hedging relationships and may be elected over time as reference rate reform activities occur. The Company has not yet adopted the standard and continues to evaluate the impact of ASU 2020-04 and ASU 2021-01 on its consolidated financial statements and may elect optional expedients in future periods as reference rate reform activities o c On April 10, 2020, the Financial Accounting Standards Board (the “FASB”) issued a Staff Q&A to respond to some frequently asked questions about accounting for rent relief related to the effects of the COVID-19 pandemic. Consequently, for rent relief related to the effects of the COVID-19 pandemic, an entity will not be required to analyze each contract to determine whether enforceable rights and obligations for abatements exist in the contract and can elect to apply or not apply the lease modification guidance to those contracts. Entities may make the elections for any lessor-provided rent relief related to the effects of the COVID-19 pandemic (e.g., deferrals of lease payments, reduced future lease payments, etc.) as long as the rent relief does not result in a substantial increase in the rights of the lessor or the obligations of the lessee. To date, the Company granted rent relief to certain tenants, most often in the form of a rent deferral or rent abatement. For rent relief granted that did not result in a substantial increase in the rights of the lessor or the obligations of the lessee, the Company elected to not apply the lease modification guidance and instead account for the rent relief as though the enforceable rights and obligations for the relief existed in the original contract. For rent relief granted that resulted in a substantial increase in the rights of the lessor or the obligations of the lessee, the Company applied the lease modification guidance to the applicable contracts.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
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 straight-line basis over estimated useful lives of: Years Buildings 28-50 Furniture, fixtures and equipment 4-10

Rents Receivable, Net (Tables)

Rents Receivable, Net (Tables)	12 Months Ended
	Dec. 31, 2020
Text Block [Abstract]
Components of Rents Receivable	The Company’s rents receivable is comprised of the following components (in thousands): December 31, December 31, Billed receivables $ 2,239 $ 2,880 Straight-line receivables 30,729 29,232 Total rents receivable $ 32,968 $ 32,112

Real Estate Investments (Tables

Real Estate Investments (Tables)	12 Months Ended
	Dec. 31, 2020
Real Estate [Abstract]
Schedule of Acquired Properties	During the years ended December 31, 2020, Property Date Acquired Percentage Owned 7601 Tech (1) September 2019 100 % Cascade Station June 2019 100 % Canyon Park February 2019 100 % Camelback Square December 2018 100 % Greenwood Blvd December 2018 100 % Circle Point Land December 2018 100 % The Quad July 2018 100 % Circle Point July 2018 100 % Pima Center April 2018 100 % (1) Denver Tech is comprised of 7601 Tech and 7595 Tech (formerly “DTC Crossroads”).
Schedule of Allocation of Purchase Price of Assets Acquired and Liabilities Assumed	The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2019 (in thousands): Canyon Cascade 7601 December 31, Land $ 7,098 $ — $ 10,865 $ 17,963 Buildings and improvements 36,619 25,141 25,677 87,437 Tenant improvements 1,797 2,080 3,858 7,735 Lease intangible assets 8,109 3,134 7,401 18,644 Other assets 10 3,164 293 3,467 Debt — (697 ) — (697 ) Accounts payable and other liabilities (1,266 ) (186 ) (668 ) (2,120 ) Lease intangible liabilities (1,297 ) (220 ) (79 ) (1,596 ) Net assets acquired $ 51,070 $ 32,416 $ 47,347 $ 130,833 The following table summarizes the Company’s allocations of the purchase price of assets acquired and liabilities assumed during the year ended December 31, 2018 (in thousands): Pima Circle The Circle Point Greenwood Camelback December 31, Land $ — $ 8,744 $ 8,079 $ 4,937 $ 3,945 $ 11,738 $ 37,443 Buildings and improvements 42,235 33,708 38,060 — 23,741 35,532 173,276 Tenant improvements 2,898 5,393 1,798 — 2,278 2,390 14,757 Lease intangible assets 10,691 10,299 4,209 — 4,578 4,304 34,081 Other assets 95 25 15 — 15 10 160 Accounts payable and other liabilities (337 ) (1,157 ) (527 ) (72 ) (96 ) (421 ) (2,610 ) Lease intangible liabilities (129 ) (390 ) (1,247 ) — — (827 ) (2,593 ) Net assets acquired $ 55,453 $ 56,622 $ 50,387 $ 4,865 $ 34,461 $ 52,726 $ 254,514
Schedule of Property Classified as Held for Sale	The property was classified as held for sale as of December 31, 2020 (in thousands): Cherry Creek December 31, Real estate properties, net $ 40,849 Deferred leasing costs, net 150 Acquired lease intangible assets, net 2,256 Rents receivable, prepaid expenses and other assets 2,799 Assets held for sale $ 46,054 Accounts payable, accrued expenses, deferred rent and tenant rent deposits $ (531 ) Liabilities related to assets held for sale $ (531) The property has been classified as held for sale as of December 31, 2019 (in thousands): Circle Point Land December 31, Real estate properties, net $ 4,514 Assets held for sale $ 4,514 Accounts payable, accrued expenses, deferred rent and tenant rent deposits $ (67 ) Liabilities related to assets held for sale $ (67 )

Lease Intangibles (Tables)

Lease Intangibles (Tables)	12 Months Ended
	Dec. 31, 2020
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 December 31, 2020 and December 31, 2019 were comprised as follows (in thousands): Lease Intangible Assets Lease Intangible Liabilities December 31, 2020 Above Market In Place Leases Leasing Total Below Below Total Cost $ 14,894 $ 80,259 $ 30,284 $ 125,437 $ (13,093) $ (138) $ (13,231) Accumulated amortization (8,497 ) (55,636 ) (17,161 ) (81,294 ) 7,152 44 7,196 $ 6,397 $ 24,623 $ 13,123 $ 44,143 $ (5,941) $ (94) $ (6,035) Lease Intangible Assets Lease Intangible Liabilities December 31, 2019 Above Market In Place Leases Leasing Total Below Below Total Cost $ 15,242 $ 87,320 $ 36,048 $ 138,610 $ (13,878) $ (138) $ (14,016) Accumulated amortization (6,704 ) (48,229 ) (16,144 ) (71,077 ) 5,782 40 5,822 $ 8,538 $ 39,091 $ 19,904 $ 67,533 $ (8,096) $ (98) $ (8,194)
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 (in thousands): 2021 $ 13,632 2022 8,229 2023 5,355 2024 3,040 2025 2,659 Thereafter 5,193 $ 38,108

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Outstanding Indebtness	The following table summarizes the outstanding indebtedness as of December 31, 2020 and 2019 (in thousands): Property December 31, 2020 December 31, Interest Rate as 2020 (1) Maturity Unsecured Credit Facility (3)(4) $ 75,000 $ — LIBOR +1.50 % (2) March 2022 Term Loan (4) 50,000 50,000 LIBOR +1.40 % (2) September 2024 Midland Life Insurance (5) 83,537 85,293 4.34 % May 2021 Mission City 47,000 47,000 3.78 % November 2027 Canyon Park (6) 40,950 40,950 4.30 % March 2027 190 Office Center 40,236 40,854 4.79 % October 2025 Circle Point 39,650 39,650 4.49 % September 2028 SanTan 33,444 34,053 4.56 % March 2027 Intellicenter 32,442 32,971 4.65 % October 2025 The Quad 30,600 30,600 4.20 % September 2028 FRP Collection 28,263 28,969 3.10 % September 2023 2525 McKinnon 27,000 27,000 4.24 % April 2027 Greenwood Blvd 22,425 22,425 3.15 % December 2025 Cascade Station 21,952 22,304 4.55 % May 2024 5090 N . 21,640 22,000 3.92 % January 2027 AmberGlen 20,000 20,000 3.69 % May 2027 Lake Vista Pointe 17,375 17,717 4.28 % August 2024 Central Fairwinds 17,127 17,534 3.15 % June 2024 FRP Ingenuity Drive 16,736 17,000 4.44 % December 2024 Carillon Point 15,585 15,972 3.10 % October 2023 Total Principal 680,962 612,292 Deferred financing costs, net (4,195 ) (5,660 ) Unamortized fair value adjustments 475 618 Total $ 677,242 $ 607,250 (1) All interest rates are fixed interest rates with the exception of the Unsecured Credit Facility (“Unsecured Credit Facility”) and the Term Loan (as defined herein), as explained in footnotes 3 and 4 below. (2) As of December 31, 2020, the one-month (3) In March 2018, the Company entered into the Credit Agreement 2022 March 2023 (4) In September 2019, the Company entered into a five-year $50 30-day (5) The mortgage loan is cross-collateralized by Cherry Creek, City Center and 7595 Tech (formerly “DTC Crossroads”). In February 2021, the loan balance of (6) The mortgage loan anticipated repayment date (“ARD”) is March 1, 2027. The final scheduled maturity date can be extended up to 5 years beyond the ARD. If the loan is not paid off at ARD, loan’s interest rate shall be adjusted to the greater of (i) the initial interest rate plus 200 basis points or (ii) the yield on the five year “on the run” treasury reported by Bloomberg market data service plus 450 basis points.
Schedule of Principal Repayments of Mortgage Payable	The scheduled principal repayments of mortgage payable as of December 31, 2020 are as follows (in thousands): 2021 $ 89,304 2022 81,529 2023 48,529 2024 124,725 2025 92,036 Thereafter 244,839 $ 680,962

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Operating Lease Lease Income	The Company recognized fixed and variable lease payments for the years ended December 31, 2020 and December 31, 2019 as follows (in thousands): Years Ended 2020 2019 Fixed payments $ 137,247 $ 132,540 Variable payments 23,502 20,990 $ 160,749 $ 153,530
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum lease payments to be received as of December 31, 2020 under noncancellable operating leases for the next five years and thereafter are as follows (in thousands): 2021 $ 125,736 2022 108,493 2023 91,708 2024 72,312 2025 56,709 Thereafter 146,488 $ 601,446
Schedule Of Supplemental Balance Sheet Information Related To Leases	Right-of-use December 31, December 31, Right-of-use $ 12,739 $ 13,130 Lease liability – operating leases $ 7,719 $ 8,033 Right-of-use $ 55 $ 79 Lease liability – financing leases $ 55 $ 79
Schedule future minimum lease payments to be paid	Future minimum lease payments to be paid by the Company as a lessee as of December 31, 2020 for the next five years and thereafter are as follows (in thousands): Operating Financing 2021 $ 552 $ 27 2022 798 27 2023 663 4 2024 597 — 2025 596 — Thereafter 26,084 — Total future minimum lease payments 29,290 58 Discount (21,571 ) (3 ) Total $ 7,719 $ 55

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Summary of Reconciliation of Numerators and Denominators of Basic and Diluted Per-Share Computations	The table below is a reconciliation of the numerators and denominators of the basic and diluted EPS computations for the years ended December 31, 2020, 2019, and 2018 (in thousands, except per share amounts): Years ended December 31, 2020 2019 2018 Net income $ 5,129 $ 2,442 $ 38,669 Less: Net income attributable to noncontrolling interests in properties (602 ) (644 ) (501 ) Less: Net income attributable to Preferred stockholders (7,420 ) (7,420 ) (7,420 ) Numerator for basic and diluted EPS $ (2,893 ) $ (5,622 ) $ 30,748 Denominator for basic EPS 47,223 43,997 37,321 Dilutive effect of RSUs — — 349 Denominator for dilutive EPS $ 47,223 $ 43,997 $ 37,670 Net (loss)/income per common share: Basic $ (0.06 ) $ (0.13 ) $ 0.82 Dilutive $ (0.06 ) $ (0.13 ) $ 0.82

Stockholder's Equity (Tables)

Stockholder's Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Federal Home Loan Banks [Abstract]
Schedule of Distributions Declared per Share and Unit	During the year ended December 31, 2020, the Company declared the following distributions per share and unit: Period Distribution per Declaration Date Record Date Payment Date January 1, 2020 – March 31, 2020 $ 0.15 March 25, 2020 April 9, 2020 April 24, 2020 April 1, 2020 – June 30, 2020 0.15 June 12, 2020 July 10, 2020 July 24, 2020 July 1, 2020 – September 30, 2020 0.15 September 15, 2020 October 8, 2020 October 22, 2020 October 1, 2020 – December 31, 2020 0.15 December 15, 2020 January 11, 2021 January 25, 2021 Total $ 0.60

Quarterly Financial Informati_2

Quarterly Financial Information (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Summary of Selected Quarterly Financial Data	The following tables summarize certain selected quarterly financial data for 2020 and 2019 (in thousands, except per share data). Summation of the individual quarters of net income/(loss) per share may not equal annual totals due to rounding. 2020 Quarters Fourth Third Second First Revenue $ 39,840 $ 41,261 $ 39,617 $ 40,122 Net income 461 3,039 623 1,006 Net (loss)/income attributable to common stockholders (1,482 ) 1,031 (1,411 ) (1,031 ) Net (loss)/income per share (0.03 ) 0.02 (0.03 ) (0.02 ) 2019 Quarters Fourth Third Second First Revenue $ 39,060 $ 38,946 $ 41,171 $ 37,120 Net income/(loss) 2,988 (947 ) 1,321 (920 ) Net income/(loss) attributable to common stockholders 987 (2,966 ) (699 ) (2,944 ) Net income/(loss) per share 0.02 (0.07 ) (0.02 ) (0.07 )

Organization and Description _2

Organization and Description of Business - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Company formation date	Nov. 26, 2013
Operation commencement date	Apr. 21, 2014

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Schedule of Estimated Useful Lives of Real Estate Properties (Detail)	12 Months Ended
	Dec. 31, 2020
Minimum [Member] | Building [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	28 years
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	4 years
Maximum [Member] | Building [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	50 years
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Real estate properties estimated useful lives	10 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
Summary of Significant Accounting Policies [Line Items]
Percentage of REIT taxable income distributed to stockholders	90.00%

Rents Receivable, Net - Compone

Rents Receivable, Net - Components of Rents Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable, Net, Current [Abstract]
Billed receivables	$ 2,239	$ 2,880
Straight-line receivables	30,729	29,232
Total rents receivable	$ 32,968	$ 32,112

Rents Receivable, Net - Additio

Rents Receivable, Net - Additional Information (Detail)	Dec. 31, 2020USD ($)
Accounts Receivable, Net, Current [Abstract]
Allowance for doubtful accounts	$ 100

Real Estate Investments - Sched

Real Estate Investments - Schedule of Acquired Properties through Operating Partnership (Detail)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
7601 Tech [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions	[1]	2019-09
Real estate property, percentage owned, asset acquisitions	[1]	100.00%
Canyon Park [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions		2019-02
Real estate property, percentage owned, asset acquisitions		100.00%
Cascade Station [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions		2019-06
Real estate property, percentage owned, asset acquisitions		100.00%
Camelback Square [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions			2018-12
Real estate property, percentage owned, asset acquisitions			100.00%
Greenwood Blvd [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions			2018-12
Real estate property, percentage owned, asset acquisitions			100.00%
Circle Point Land [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions			2018-12
Real estate property, percentage owned, asset acquisitions			100.00%
The Quad [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions			2018-07
Real estate property, percentage owned, asset acquisitions			100.00%
Circle Point [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions			2018-07
Real estate property, percentage owned, asset acquisitions			100.00%
Pima Center [Member]
Acquisitions [Line Items]
Real estate property, date acquired, asset acquisitions			2018-04
Real estate property, percentage owned, asset acquisitions			100.00%
[1]	Denver Tech is comprised of 7601 Tech and 7595 Tech (formerly “DTC Crossroads”).

Real Estate Investments - Sch_2

Real Estate Investments - Schedule of Allocation of Purchase Price of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Acquisitions [Line Items]
Land	$ 17,963	$ 37,443
Buildings and improvements	87,437	173,276
Tenant improvements	7,735	14,757
Lease intangible assets	18,644	34,081
Other assets	3,467	160
Debt	(697)
Accounts payable and other liabilities	(2,120)	(2,610)
Lease intangible liabilities	(1,596)	(2,593)
Net assets acquired	130,833	254,514
7601 Tech [Member]
Acquisitions [Line Items]
Land	10,865
Buildings and improvements	25,677
Tenant improvements	3,858
Lease intangible assets	7,401
Other assets	293
Accounts payable and other liabilities	(668)
Lease intangible liabilities	(79)
Net assets acquired	47,347
Canyon Park [Member]
Acquisitions [Line Items]
Land	7,098
Buildings and improvements	36,619
Tenant improvements	1,797
Lease intangible assets	8,109
Other assets	10
Accounts payable and other liabilities	(1,266)
Lease intangible liabilities	(1,297)
Net assets acquired	51,070
Cascade Station [Member]
Acquisitions [Line Items]
Buildings and improvements	25,141
Tenant improvements	2,080
Lease intangible assets	3,134
Other assets	3,164
Debt	(697)
Accounts payable and other liabilities	(186)
Lease intangible liabilities	(220)
Net assets acquired	$ 32,416
Pima Center [Member]
Acquisitions [Line Items]
Buildings and improvements		42,235
Tenant improvements		2,898
Lease intangible assets		10,691
Other assets		95
Accounts payable and other liabilities		(337)
Lease intangible liabilities		(129)
Net assets acquired		55,453
Circle Point [Member]
Acquisitions [Line Items]
Land		8,744
Buildings and improvements		33,708
Tenant improvements		5,393
Lease intangible assets		10,299
Other assets		25
Accounts payable and other liabilities		(1,157)
Lease intangible liabilities		(390)
Net assets acquired		56,622
The Quad [Member]
Acquisitions [Line Items]
Land		8,079
Buildings and improvements		38,060
Tenant improvements		1,798
Lease intangible assets		4,209
Other assets		15
Accounts payable and other liabilities		(527)
Lease intangible liabilities		(1,247)
Net assets acquired		50,387
Circle Point Land [Member]
Acquisitions [Line Items]
Land		4,937
Accounts payable and other liabilities		(72)
Net assets acquired		4,865
Greenwood Blvd [Member]
Acquisitions [Line Items]
Land		3,945
Buildings and improvements		23,741
Tenant improvements		2,278
Lease intangible assets		4,578
Other assets		15
Accounts payable and other liabilities		(96)
Net assets acquired		34,461
Camelback Square [Member]
Acquisitions [Line Items]
Land		11,738
Buildings and improvements		35,532
Tenant improvements		2,390
Lease intangible assets		4,304
Other assets		10
Accounts payable and other liabilities		(421)
Lease intangible liabilities		(827)
Net assets acquired		$ 52,726

Real Estate Investments - Addit

Real Estate Investments - Additional Information (Detail) - USD ($) $ in Thousands	Nov. 18, 2020	Jul. 23, 2020	Dec. 12, 2019	May 10, 2019	May 07, 2019	Feb. 07, 2019	Mar. 08, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Real Estate [Line Items]
Net gain on sale of real estate property								$ 1,347	$ 3,412	$ 46,980
Debt Assumed									22,473
Washington Group Plaza [Member]
Real Estate [Line Items]
Proceeds of sale of property							$ 86,500
Net gain on sale of real estate property							47,000
Cost incurred on property sold							$ 1,700
Plaza 25 [Member]
Real Estate [Line Items]
Proceeds of sale of property						$ 17,900
Sorrento Mesa [Member]
Real Estate [Line Items]
Proceeds of sale of property					$ 16,500
Net gain on sale of real estate property					$ 500
Cascade Station [Member]
Real Estate [Line Items]
Debt Assumed									$ 22,500
Circle Point Land [Member]
Real Estate [Line Items]
Proceeds of sale of property				$ 6,500
Logan Tower [Member]
Real Estate [Line Items]
Proceeds of sale of property		$ 6,500	$ 12,600
Net gain on sale of real estate property		$ 1,300	$ 2,900
Cherry Creek [Member]
Real Estate [Line Items]
Proceeds of sale of property	$ 95,000

Real Estate Investments - Sch_3

Real Estate Investments - Schedule of Property Classified as Held for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	$ 46,054	$ 4,514
Liabilities related to assets held for sale	531	67
Circle Point Land [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		4,514
Liabilities related to assets held for sale		(67)
Circle Point Land [Member] | Real estate properties, net [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		4,514
Circle Point Land [Member] | Accounts payable, accrued expenses, deferred rent and tenant rent deposits [Member]
Long Lived Assets Held-for-sale [Line Items]
Liabilities related to assets held for sale		$ (67)
Cherry Creek [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	46,054
Liabilities related to assets held for sale	(531)
Cherry Creek [Member] | Real estate properties, net [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	40,849
Cherry Creek [Member] | Deferred leasing costs, net [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	150
Cherry Creek [Member] | Acquired lease intangible assets, net [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	2,256
Cherry Creek [Member] | Rents receivable, prepaid expenses and other assets [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	2,799
Cherry Creek [Member] | Accounts payable, accrued expenses, deferred rent and tenant rent deposits [Member]
Long Lived Assets Held-for-sale [Line Items]
Liabilities related to assets held for sale	$ (531)

Lease Intangibles - Schedule of

Lease Intangibles - Schedule of Lease Intangibles and Value of Assumed Lease Obligations (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Cost, Lease Intangible Assets	$ 125,437	$ 138,610
Accumulated amortization, Lease Intangible Assets	(81,294)	(71,077)
Total, Lease Intangible Assets	44,143	67,533
Cost, Lease Intangible Liabilities	(13,231)	(14,016)
Accumulated amortization, Lease Intangible Liabilities	7,196	5,822
Total, Lease Intangible Liabilities	(6,035)	(8,194)
Above Market Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Cost, Lease Intangible Assets	14,894	15,242
Accumulated amortization, Lease Intangible Assets	(8,497)	(6,704)
Total, Lease Intangible Assets	6,397	8,538
In Place Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Cost, Lease Intangible Assets	80,259	87,320
Accumulated amortization, Lease Intangible Assets	(55,636)	(48,229)
Total, Lease Intangible Assets	24,623	39,091
Leasing Commissions [Member]
Finite-Lived Intangible Assets [Line Items]
Cost, Lease Intangible Assets	30,284	36,048
Accumulated amortization, Lease Intangible Assets	(17,161)	(16,144)
Total, Lease Intangible Assets	13,123	19,904
Below Market Tenant Lease [Member]
Finite-Lived Intangible Assets [Line Items]
Cost, Lease Intangible Liabilities	(13,093)	(13,878)
Accumulated amortization, Lease Intangible Liabilities	7,152	5,782
Total, Lease Intangible Liabilities	(5,941)	(8,096)
Below Market Ground Lease [Member]
Finite-Lived Intangible Assets [Line Items]
Cost, Lease Intangible Liabilities	(138)	(138)
Accumulated amortization, Lease Intangible Liabilities	44	40
Total, Lease Intangible Liabilities	$ (94)	$ (98)

Lease Intangibles - Estimated A

Lease Intangibles - Estimated Aggregate Amortization Expense for Lease Intangibles (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2021	$ 13,632
2022	8,229
2023	5,355
2024	3,040
2025	2,659
Thereafter	5,193
Total	$ 38,108

Debt - Summary of Outstanding I

Debt - Summary of Outstanding Indebtedness (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Indebtedness	$ 680,962	$ 612,292
Deferred financing costs, net	(4,195)	(5,660)
Unamortized fair value adjustments	475	618
Total	677,242	607,250
Unsecured Debt [Member] | Term loan [Member]
Debt Instrument [Line Items]
Indebtedness	$ 50,000	50,000
Interest Rate, terms	LIBOR +1.40
Interest Rate, spread	1.40%
Maturity	2024-09
Credit Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 75,000
Interest Rate, terms	LIBOR +1.50
Interest Rate, spread	1.50%
Maturity	2022-03
Midland Life Insurance [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 83,537	85,293
Interest Rate	4.34%
Maturity	2021-05
Mission City [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 47,000	47,000
Interest Rate	3.78%
Maturity	2027-11
190 Office Center [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 40,236	40,854
Interest Rate	4.79%
Maturity	2025-10
Canyon Park [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 40,950	40,950
Interest Rate	4.30%
Maturity	2027-03
Circle Point [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 39,650	39,650
Interest Rate	4.49%
Maturity	2028-09
SanTan [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 33,444	34,053
Interest Rate	4.56%
Maturity	2027-03
Intellicenter [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 32,442	32,971
Interest Rate	4.65%
Maturity	2025-10
The Quad [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 30,600	30,600
Interest Rate	4.20%
Maturity	2028-09
FRP Collection [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 28,263	28,969
Interest Rate	3.10%
Maturity	2023-09
2525 McKinnon [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 27,000	27,000
Interest Rate	4.24%
Maturity	2027-04
Cascade Station [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 21,952	22,304
Interest Rate	4.55%
Maturity	2024-05
Greenwood Blvd [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 22,425	22,425
Interest Rate	3.15%
Maturity	2025-12
5090 N 40th St [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 21,640	22,000
Interest Rate	3.92%
Maturity	2027-01
AmberGlen Property [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 20,000	20,000
Interest Rate	3.69%
Maturity	2027-05
Lake Vista Pointe [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 17,375	17,717
Interest Rate	4.28%
Maturity	2024-08
Central Fairwinds [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 17,127	17,534
Interest Rate	3.15%
Maturity	2024-06
FRP Ingenuity Drive [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 16,736	17,000
Interest Rate	4.44%
Maturity	2024-12
Carillon Point [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Indebtedness	$ 15,585	$ 15,972
Interest Rate	3.10%
Maturity	2023-10

Debt - Summary of Outstanding_2

Debt - Summary of Outstanding Indebtedness (Parenthetical) (Detail) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Feb. 25, 2021	Mar. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019
Debt Instrument [Line Items]
Loan repaid			$ 61,330	$ 216,336	$ 241,820
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Fixed Interest Rate						1.27%
Derivative, Notional Amount						$ 50,000
Maximum [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, authorized amount		$ 250,000				300,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Term loan						$ 50,000
Midland Life Insurance [Member] | Secured Debt [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Loan repaid	$ 83,500
Canyon Park [Member] | Secured Debt [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest Rate, Description			200.00%
Canyon Park [Member] | Secured Debt [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest Rate, Description			450.00%
Credit Facility [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, outstanding			$ 7,000
Credit Facility [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate, Description			125.00%
Credit Facility [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate, Description			215.00%
Credit Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, authorized amount		$ 250,000
Revolving Credit Facility, outstanding			$ 75,000
Loan maturity date		Mar. 31, 2022
Loan expected extended maturity date		Mar. 31, 2023
Revolving Credit Facility, maximum borrowing capacity		$ 500,000
Interest Rate, Description			1.50%
Credit Facility [Member] | Unsecured Debt [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
One month LIBOR rate			0.14%
Credit Facility [Member] | Unsecured Debt [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio			1.50%
Credit Facility [Member] | Unsecured Debt [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate, Description			140.00%
Credit Facility [Member] | Unsecured Debt [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest Rate, Description			225.00%

Debt - Schedule of Principal Re

Debt - Schedule of Principal Repayments of Mortgage Payable (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
2021	$ 89,304
2022	81,529
2023	48,529
2024	124,725
2025	92,036
Thereafter	244,839
Total	$ 680,962	$ 612,292

Fair Value of Financial Instr_2

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amounts reclassified to interest expense	$ 328	$ (106)
Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notional amount			$ 50,000
Fixed interest rate			1.27%
Amounts reclassified to interest expense	300	100
Interest Rate Swap [Member] | Other Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets fair value		700
Interest Rate Swap [Member] | Other Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Liability	2,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loans payable, fair value	$ 573,600	$ 576,900

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	Feb. 01, 2019	Aug. 01, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Percentage minority interest owned, acquired		7.00%
Central Fairwinds Limited Partnership [Member]
Related Party Transaction [Line Items]
Percentage minority interest owned			97.00%
Administrative Services Agreement [Member] | SCRE II [Member] | First Twelve Months [Member]
Related Party Transaction [Line Items]
Annual payment receivable for services	$ 500,000
Administrative Services Agreement [Member] | SCRE II [Member] | Thereafter [Member]
Related Party Transaction [Line Items]
Management fee paid percentage	40.00%
Administrative Services Agreement [Member] | Second City Funds [Member]
Related Party Transaction [Line Items]
Annual payment receivable for services			$ 500,000	$ 500,000	$ 700,000
Administrative Services Agreement [Member] | Clarity Real Estate III GP Limited [Member]
Related Party Transaction [Line Items]
Annual payment receivable for services			$ 200,000
Central Fairwinds Limited Partnership Minority Interest Purchase Agreements [Member] | Second City Funds [Member]
Related Party Transaction [Line Items]
Related party transaction		$ 1,100,000
Purchase Contracts [Member] | Rental and other revenues [Member]
Related Party Transaction [Line Items]
Annual payment receivable for services				$ 2,600,000

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lease cost	$ 0.9	$ 0.8
Operating Lease, Weighted Average Remaining Lease Term	58 years
Operating Lease, Weighted Average Discount Rate, Percent	6.30%
Maximum [Member]
Remaining lease terms	68 years
Minimum [Member]
Remaining lease terms	1 year

Leases - Schedule of Operating

Leases - Schedule of Operating Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fixed payments	$ 137,247	$ 132,540
Variable payments	23,502	20,990
Operating Lease, Lease Income	$ 160,749	$ 153,530

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments under Non-cancellable Operating Leases (Detail) $ in Thousands	Dec. 31, 2020USD ($)
Leases [Abstract]
2021	$ 125,736
2022	108,493
2023	91,708
2024	72,312
2025	56,709
Thereafter	146,488
Total future minimum lease payments to be received	$ 601,446

Leases - Schedule of Operatin_2

Leases - Schedule of Operating Right-of-Use Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lease liability – operating leases	$ 7,719
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiability	us-gaap:OperatingLeaseLiability
Lease liability – financing leases	$ 55
Other Assets [Member]
Right-of-use asset - operating leases	12,739	$ 13,130
Right-of-use asset – financing leases	55	79
Other Liabilities [Member]
Lease liability – operating leases	7,719	8,033
Lease liability – financing leases	$ 55	$ 79

Leases - Schedule Future Minimu

Leases - Schedule Future Minimum Lease Payments To Be Paid (Detail) $ in Thousands	Dec. 31, 2020USD ($)
2021	$ 552
2022	798
2023	663
2024	597
2025	596
Thereafter	26,084
Total future minimum lease payments	29,290
Discount	(21,571)
Total	7,719
2021	27
2022	27
2023	4
2024	0
2025	0
Thereafter	0
Total future minimum lease payments	58
Discount	(3)
Total	$ 55

Earnings Per Share - Summary of

Earnings Per Share - Summary of Reconciliation of Numerators and Denominators of Basic and Diluted Per-Share Computations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share Reconciliation [Abstract]
Net income	$ 461	$ 3,039	$ 623	$ 1,006	$ 2,988	$ (947)	$ 1,321	$ (920)	$ 5,129	$ 2,442	$ 38,669
Less: Net income attributable to noncontrolling interests in properties									(602)	(644)	(501)
Less: Net income attributable to Preferred stockholders									(7,420)	(7,420)	(7,420)
Net (loss)/income attributable to common stockholders	$ (1,482)	$ 1,031	$ (1,411)	$ (1,031)	$ 987	$ (2,966)	$ (699)	$ (2,944)	$ (2,893)	$ (5,622)	$ 30,748
Denominator for basic EPS									47,223	43,997	37,321
Dilutive effect of RSUs											349
Denominator for dilutive EPS									47,223	43,997	37,670
Net (loss)/income per common share:
Basic									$ (0.06)	$ (0.13)	$ 0.82
Dilutive									$ (0.06)	$ (0.13)	$ 0.82

Stockholder's Equity - Addition

Stockholder's Equity - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 07, 2019	Jun. 16, 2017	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 05, 2020	Mar. 09, 2020	Feb. 26, 2020	May 02, 2019	Mar. 31, 2019	Nov. 01, 2018
Class of Stock [Line Items]
Common stock, shares authorized			100,000,000	100,000,000
Preferred stock, shares authorized			5,600,000	5,600,000
Preferred stock, Dividend rate percentage			6.625%	6.625%
Net proceeds from sale of common stock				$ 198,874	$ 42,902
Maximum number of shares issued under Equity Incentive Plan									2,263,580	1,263,580
Stock Repurchase Program, Authorized Amount						$ 50,000	$ 100,000
Stock Repurchased During Period, Shares			11,363,851	0	0
Stock Repurchase During Period Before Commission, Value			$ 100,000
Schedule of Share Based Compensation Arrangement by Share Based Payment Award For Defined Performance			The payouts under the Performance RSU Awards are evaluated on a sliding scale as follows: TSR below the 30th percentile of the 2020 RSU Peer Group would result in a 50% payout; TSR at the 50th percentile of the 2020 RSU Peer Group would result in a 100% payout; and TSR at or above the 75th percentile of the 2020 RSU Peer Group would result in a 150% payout. Payouts are mathematically interpolated between these stated percentile targets, subject to a 150% maximum.
Share-based Payment Award, Award Vesting Period			3 years	3 years	3 years
Sales Agreement [Member]
Class of Stock [Line Items]
Common stock, shares authorized								15,000,000			8,000,000
Preferred stock, shares authorized								1,000,000			1,000,000
Net proceeds from sale of common stock				$ 104,800
Percentage of compensation from gross proceeds of shares sold		2.00%
Sales Agreement [Member] | Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, Dividend rate percentage		6.625%
Public Offering [Member]
Class of Stock [Line Items]
Stock, shares issued	6,900,000
Gross proceeds from sale of stock	$ 95,600
Common Stock [Member]
Class of Stock [Line Items]
Stock, shares issued				14,900,000	3,411,000
Aggregate cash distributions payable			$ 6,500
Stock Repurchased During Period, Shares			(11,364,000)
Common Stock [Member] | Sales Agreement [Member]
Class of Stock [Line Items]
Stock, shares issued				8,000,000
Gross proceeds from sale of stock				$ 106,500
Net proceeds from sale of common stock	$ 94,100
Common Stock [Member] | Dividend Declared [Member]
Class of Stock [Line Items]
Cash distributions			$ 27,400
Common Stock [Member] | Dividend Paid [Member]
Class of Stock [Line Items]
Cash distributions			33,800
Preferred Stock [Member]
Class of Stock [Line Items]
Aggregate cash distributions payable			1,900
Preferred Stock [Member] | Dividend Declared [Member]
Class of Stock [Line Items]
Cash distributions			7,400
Preferred Stock [Member] | Dividend Paid [Member]
Class of Stock [Line Items]
Cash distributions			$ 7,400
Executive Officer [Member]
Class of Stock [Line Items]
Share-based Payment Award, Award Vesting Period			3 years
Restricted Stock Units (RSUs) [Member]
Class of Stock [Line Items]
Net compensation expense			$ 1,900	$ 1,700	$ 1,400
Restricted Stock Units (RSUs) [Member] | Directors and Non-Executive Employees [Member]
Class of Stock [Line Items]
Restricted stock units granted to executive officers, directors and non-executive employees			147,050	162,500	156,375
Restricted stock units grant date fair value			$ 2,000	$ 1,800	$ 1,900
Performance stock units granted to executive officers, directors and non-executive employees			147,050	162,500	156,375
Performance stock units grant date fair value			$ 2,000	$ 1,800	$ 1,900
Performance Restricted Stock Unit [Member]
Class of Stock [Line Items]
Net compensation expense			$ 400	$ 0
Performance Restricted Stock Unit [Member] | Executive Officer [Member]
Class of Stock [Line Items]
Restricted stock units granted to executive officers, directors and non-executive employees			97,500
Restricted stock units grant date fair value			$ 1,300
Performance stock units granted to executive officers, directors and non-executive employees			97,500
Performance stock units grant date fair value			$ 1,300

Stockholder's Equity - Schedule

Stockholder's Equity - Schedule of Distributions Declared per Share and Unit (Detail) - $ / shares	3 Months Ended				12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Dividends Payable [Line Items]
Distribution per Common Share/Unit	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.60	$ 0.94	$ 0.94
Common Stock [Member]
Dividends Payable [Line Items]
Declaration Date	Dec. 15, 2020	Sep. 15, 2020	Jun. 12, 2020	Mar. 25, 2020
Record Date	Jan. 11, 2021	Oct. 8, 2020	Jul. 10, 2020	Apr. 9, 2020
Payment Date	Jan. 25, 2021	Oct. 22, 2020	Jul. 24, 2020	Apr. 24, 2020

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands	Feb. 10, 2021	Nov. 18, 2020	Feb. 25, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Repayments of debt				$ 61,330	$ 216,336	$ 241,820
Cherry Creek [Member]
Subsequent Event [Line Items]
Proceeds of sale of property		$ 95,000
Cherry Creek [Member] | Subsequent Event [Member] | Colorado Country [Member]
Subsequent Event [Line Items]
Proceeds of sale of property	$ 95,000
Midland Life Insurance [Member] | Subsequent Event [Member] | Secured Debt [Member]
Subsequent Event [Line Items]
Repayments of debt			$ 83,500

Quarterly Financial Informati_3

Quarterly Financial Information - Summary of Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 39,840	$ 41,261	$ 39,617	$ 40,122	$ 39,060	$ 38,946	$ 41,171	$ 37,120	$ 160,840	$ 156,297	$ 129,484
Net income	461	3,039	623	1,006	2,988	(947)	1,321	(920)	5,129	2,442	38,669
Net (loss)/income attributable to common stockholders	$ (1,482)	$ 1,031	$ (1,411)	$ (1,031)	$ 987	$ (2,966)	$ (699)	$ (2,944)	$ (2,893)	$ (5,622)	$ 30,748
Net (loss)/income per share	$ (0.03)	$ 0.02	$ (0.03)	$ (0.02)	$ 0.02	$ (0.07)	$ (0.02)	$ (0.07)

Schedule III - Real Estate Pr_2

Schedule III - Real Estate Properties and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 635,059
Initial Costs to Company, Land	204,289
Initial Costs to Company, Buildings and Improvements	788,921
Costs Capitalized Subsequent to Acquisitions, Improvements	93,599
Gross Amount, Land	204,289
Gross Amount, Building and Improvements	882,520
Gross Amount, Total	1,086,809	$ 1,109,173	$ 1,005,647	$ 776,301
Accumulated Amortization	131,220	$ 101,835	$ 70,484	$ 48,234
AmberGlen Property [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	20,000
Initial Costs to Company, Land	6,546
Initial Costs to Company, Buildings and Improvements	3,490
Costs Capitalized Subsequent to Acquisitions, Improvements	2,919
Gross Amount, Land	6,546
Gross Amount, Building and Improvements	6,409
Gross Amount, Total	12,955
Accumulated Amortization	$ 3,226
Year Acquired	2009
AmberGlen Property [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1984
AmberGlen Property [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1998
City Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 22,492
Initial Costs to Company, Land	3,123
Initial Costs to Company, Buildings and Improvements	10,656
Costs Capitalized Subsequent to Acquisitions, Improvements	10,321
Gross Amount, Land	3,123
Gross Amount, Building and Improvements	20,977
Gross Amount, Total	24,100
Accumulated Amortization	$ 8,397
Date of Construction	1984
Year Acquired	2010
Central Fairwinds [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 17,127
Initial Costs to Company, Land	1,747
Initial Costs to Company, Buildings and Improvements	9,751
Costs Capitalized Subsequent to Acquisitions, Improvements	6,833
Gross Amount, Land	1,747
Gross Amount, Building and Improvements	16,584
Gross Amount, Total	18,331
Accumulated Amortization	$ 5,072
Date of Construction	1982
Year Acquired	2012
Lake Vista Pointe [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 17,375
Initial Costs to Company, Land	4,115
Initial Costs to Company, Buildings and Improvements	20,600
Costs Capitalized Subsequent to Acquisitions, Improvements	196
Gross Amount, Land	4,115
Gross Amount, Building and Improvements	20,796
Gross Amount, Total	24,911
Accumulated Amortization	$ 6,128
Date of Construction	2007
Year Acquired	2014
Florida Research Park [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 44,999
Initial Costs to Company, Land	11,446
Initial Costs to Company, Buildings and Improvements	56,475
Costs Capitalized Subsequent to Acquisitions, Improvements	3,518
Gross Amount, Land	11,446
Gross Amount, Building and Improvements	59,993
Gross Amount, Total	71,439
Accumulated Amortization	$ 11,562
Date of Construction	1999
Florida Research Park [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year Acquired	2014
Florida Research Park [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Year Acquired	2016
Superior Pointe [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Costs to Company, Land	$ 3,153
Initial Costs to Company, Buildings and Improvements	19,834
Costs Capitalized Subsequent to Acquisitions, Improvements	1,971
Gross Amount, Land	3,153
Gross Amount, Building and Improvements	21,805
Gross Amount, Total	24,958
Accumulated Amortization	$ 4,372
Date of Construction	2000
Year Acquired	2015
Denver Tech [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 15,142
Initial Costs to Company, Land	18,002
Initial Costs to Company, Buildings and Improvements	52,719
Costs Capitalized Subsequent to Acquisitions, Improvements	8,397
Gross Amount, Land	18,002
Gross Amount, Building and Improvements	61,116
Gross Amount, Total	79,118
Accumulated Amortization	$ 6,901
Denver Tech [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1999
Year Acquired	2015
Denver Tech [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1997
Year Acquired	2019
190 Office Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 40,236
Initial Costs to Company, Land	7,162
Initial Costs to Company, Buildings and Improvements	39,690
Costs Capitalized Subsequent to Acquisitions, Improvements	1,609
Gross Amount, Land	7,162
Gross Amount, Building and Improvements	41,299
Gross Amount, Total	48,461
Accumulated Amortization	$ 6,357
Date of Construction	2001
Year Acquired	2015
Intellicenter [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 32,442
Initial Costs to Company, Land	5,244
Initial Costs to Company, Buildings and Improvements	34,278
Costs Capitalized Subsequent to Acquisitions, Improvements	87
Gross Amount, Land	5,244
Gross Amount, Building and Improvements	34,365
Gross Amount, Total	39,609
Accumulated Amortization	$ 5,765
Date of Construction	2008
Year Acquired	2015
Carillon Point [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 15,585
Initial Costs to Company, Land	5,172
Initial Costs to Company, Buildings and Improvements	17,316
Costs Capitalized Subsequent to Acquisitions, Improvements	227
Gross Amount, Land	5,172
Gross Amount, Building and Improvements	17,543
Gross Amount, Total	22,715
Accumulated Amortization	$ 4,040
Date of Construction	2007
Year Acquired	2016
Park Tower [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Costs to Company, Land	$ 3,479
Initial Costs to Company, Buildings and Improvements	68,656
Costs Capitalized Subsequent to Acquisitions, Improvements	16,138
Gross Amount, Land	3,479
Gross Amount, Building and Improvements	84,794
Gross Amount, Total	88,273
Accumulated Amortization	$ 13,348
Date of Construction	1973
Year Acquired	2016
5090 N 40th St [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 21,640
Initial Costs to Company, Land	6,696
Initial Costs to Company, Buildings and Improvements	32,123
Costs Capitalized Subsequent to Acquisitions, Improvements	3,213
Gross Amount, Land	6,696
Gross Amount, Building and Improvements	35,336
Gross Amount, Total	42,032
Accumulated Amortization	$ 4,136
Date of Construction	1988
Year Acquired	2016
SanTan [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 33,444
Initial Costs to Company, Land	6,803
Initial Costs to Company, Buildings and Improvements	37,187
Costs Capitalized Subsequent to Acquisitions, Improvements	4,999
Gross Amount, Land	6,803
Gross Amount, Building and Improvements	42,186
Gross Amount, Total	48,989
Accumulated Amortization	$ 7,314
Year Acquired	2016
SanTan [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2000
SanTan [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2003
2525 McKinnon [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 27,000
Initial Costs to Company, Land	10,629
Initial Costs to Company, Buildings and Improvements	34,515
Costs Capitalized Subsequent to Acquisitions, Improvements	2,396
Gross Amount, Land	10,629
Gross Amount, Building and Improvements	36,911
Gross Amount, Total	47,540
Accumulated Amortization	$ 3,949
Date of Construction	2003
Year Acquired	2017
Mission City [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 47,000
Initial Costs to Company, Land	25,741
Initial Costs to Company, Buildings and Improvements	41,474
Costs Capitalized Subsequent to Acquisitions, Improvements	8,756
Gross Amount, Land	25,741
Gross Amount, Building and Improvements	50,230
Gross Amount, Total	75,971
Accumulated Amortization	$ 9,010
Year Acquired	2017
Mission City [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1990
Mission City [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2007
Sorrento Mesa [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Costs to Company, Land	$ 34,305
Initial Costs to Company, Buildings and Improvements	36,726
Costs Capitalized Subsequent to Acquisitions, Improvements	4,143
Gross Amount, Land	34,305
Gross Amount, Building and Improvements	40,869
Gross Amount, Total	75,174
Accumulated Amortization	$ 6,287
Year Acquired	2017
Sorrento Mesa [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1985
Sorrento Mesa [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2001
Papago Tech [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Costs to Company, Land	$ 10,746
Initial Costs to Company, Buildings and Improvements	19,762
Costs Capitalized Subsequent to Acquisitions, Improvements	775
Gross Amount, Land	10,746
Gross Amount, Building and Improvements	20,537
Gross Amount, Total	31,283
Accumulated Amortization	$ 3,193
Year Acquired	2017
Papago Tech [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1993
Papago Tech [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1995
Pima Center [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Costs to Company, Buildings and Improvements	$ 45,133
Costs Capitalized Subsequent to Acquisitions, Improvements	2,431
Gross Amount, Building and Improvements	47,564
Gross Amount, Total	47,564
Accumulated Amortization	$ 4,883
Year Acquired	2018
Pima Center [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2006
Pima Center [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2008
Circle Point [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 39,650
Initial Costs to Company, Land	9,320
Initial Costs to Company, Buildings and Improvements	39,101
Costs Capitalized Subsequent to Acquisitions, Improvements	2,995
Gross Amount, Land	9,320
Gross Amount, Building and Improvements	42,096
Gross Amount, Total	51,416
Accumulated Amortization	$ 4,934
Date of Construction	2001
Year Acquired	2018
The Quad [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 30,600
Initial Costs to Company, Land	8,079
Initial Costs to Company, Buildings and Improvements	39,858
Costs Capitalized Subsequent to Acquisitions, Improvements	129
Gross Amount, Land	8,079
Gross Amount, Building and Improvements	39,987
Gross Amount, Total	48,066
Accumulated Amortization	$ 3,486
Date of Construction	1982
Year Acquired	2018
Greenwood Blvd [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 22,425
Initial Costs to Company, Land	3,945
Initial Costs to Company, Buildings and Improvements	26,019
Costs Capitalized Subsequent to Acquisitions, Improvements	1,224
Gross Amount, Land	3,945
Gross Amount, Building and Improvements	27,243
Gross Amount, Total	31,188
Accumulated Amortization	$ 1,864
Date of Construction	1997
Year Acquired	2018
Camelback Square [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Initial Costs to Company, Land	$ 11,738
Initial Costs to Company, Buildings and Improvements	37,922
Costs Capitalized Subsequent to Acquisitions, Improvements	5,842
Gross Amount, Land	11,738
Gross Amount, Building and Improvements	43,764
Gross Amount, Total	55,502
Accumulated Amortization	$ 2,754
Date of Construction	1978
Year Acquired	2018
Canyon Park [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 40,950
Initial Costs to Company, Land	7,098
Initial Costs to Company, Buildings and Improvements	38,416
Costs Capitalized Subsequent to Acquisitions, Improvements	4,197
Gross Amount, Land	7,098
Gross Amount, Building and Improvements	42,613
Gross Amount, Total	49,711
Accumulated Amortization	$ 2,537
Year Acquired	2019
Canyon Park [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1993
Canyon Park [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	1999
Cascade Station [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 21,952
Initial Costs to Company, Buildings and Improvements	27,220
Costs Capitalized Subsequent to Acquisitions, Improvements	283
Gross Amount, Building and Improvements	27,503
Gross Amount, Total	27,503
Accumulated Amortization	$ 1,705
Year Acquired	2019
Cascade Station [Member] | Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2008
Cascade Station [Member] | Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Date of Construction	2009
Corporate [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 125,000

Schedule III - Real Estate Pr_3

Schedule III - Real Estate Properties and Accumulated Depreciation (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Real estate assets, aggregate cost for federal tax purpose	$ 1,100,000
Unamortized fair value adjustments	475	$ 618
Secured Debt [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Deferred financing costs	$ 4,200

Schedule III - Summary of Real

Schedule III - Summary of Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Real Estate Properties
Balance, beginning of year	$ 1,109,173	$ 1,005,647	$ 776,301
Acquisitions		113,134	225,476
Dispositions	(1,993)	(27,585)	(5,715)
Capital improvements	27,503	22,491	30,378
Assets held for sale	(47,874)	(4,514)	(20,793)
Balance, end of year	1,086,809	1,109,173	1,005,647
Accumulated Depreciation
Balance, beginning of year	101,835	70,484	48,234
Depreciation	38,372	35,531	29,196
Dispositions	(1,962)	(4,180)	(2,301)
Depreciation on assets held for sale	(7,025)		(4,645)
Balance, end of year	$ 131,220	$ 101,835	$ 70,484