Peakstone Realty Trust (PKST) 10-Q 15 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 13, 2019
Class of Stock [Line Items]
Entity Registrant Name	Griffin Capital Essential Asset REIT II, Inc.
Entity Central Index Key	0001600626
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Extended Transition Period	true
Class T
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		228,505
Class S
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		282
Class D
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		19,431
Class I
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		820,852
Class A
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		25,901,509
Class AA
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		50,103,375
Class AAA
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		980,981
Common Class E
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding (in shares)		175,334,674

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents		$ 27,634	$ 28,623
Restricted cash		12,993	12,904
Real estate:
Land		122,482	122,482
Building and improvements		819,224	819,224
Tenant origination and absorption cost		240,364	240,364
Construction in progress		272	144
Total real estate		1,182,342	1,182,214
Less: accumulated depreciation and amortization		(139,599)	(128,570)
Total real estate, net		1,042,743	1,053,644
Intangible assets, net		2,831	2,923
Due from affiliates		1,273	1,202
Deferred rent		32,321	31,189
Other assets, net		5,203	6,850
Total assets		1,124,998	1,137,335
LIABILITIES AND EQUITY
Total debt		492,349	481,955
Restricted reserves		11,636	11,565
Distributions payable		1,930	3,650
Due to affiliates		12,168	19,048
Below market leases, net		44,979	46,229
Accrued expenses and other liabilities		12,961	21,023
Total liabilities		576,023	583,470
Commitments and contingencies
Common stock subject to redemption		37,274	37,357
Stockholders' equity:
Common Stock, $0.001 par value - Authorized:800,000,000; 77,881,873 and 77,525,973 shares outstanding in the aggregate, as of March 31, 2019 and December 31, 2018, respectively (1)	[1]	77	76
Additional paid-in capital		659,998	656,500
Cumulative distributions		(135,813)	(125,297)
Accumulated deficit		(17,593)	(15,953)
Total stockholders' equity		506,669	515,326
Noncontrolling interests		5,032	1,182
Total equity		511,701	516,508
Total liabilities and equity		$ 1,124,998	$ 1,137,335
[1]	See Note 7, Equity, for the number of shares outstanding of each class of common stock as of March 31, 2019 and December 31, 2018.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Common stock, number of shares outstanding (in shares)	77,881,873	77,525,973
Common Stock
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock, number of shares authorized (in shares)	800,000,000	800,000,000
Common stock, number of shares outstanding (in shares)	77,881,873	77,525,973

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue:
Rental income	$ 26,400	$ 26,789
Expenses:
Property operating	1,861	2,053
Property tax	2,426	2,459
Property management fees to affiliates	481	459
Advisory fees to affiliates	2,339	2,301
Performance distribution allocation to affiliates	1,920	2,061
Acquisition fees and expenses to non-affiliates	379	0
General and administrative	866	760
Corporate operating expenses to affiliates	829	678
Depreciation and amortization	11,029	10,998
Total expenses	22,130	21,769
Income before other income (expenses)	4,270	5,020
Other income (expense):
Interest expense	(5,918)	(4,271)
Other income, net	1	55
Net (loss) income	(1,647)	804
Net loss (income) attributable to noncontrolling interests	7	(1)
Net (loss) income attributable to common stockholders	$ (1,640)	$ 803
Net (loss) income attributable to common stockholders, basic and diluted (usd per share)	$ (0.02)	$ 0.01
Weighted average number of common shares outstanding, basic and diluted (shares)	77,588,872	77,258,928
Dividends declared per common share (usd per share)	$ 0.14	$ 0.14

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,647)	$ 804
Other comprehensive (loss) income:
Change in fair value of swap agreement	0	74
Total comprehensive (loss) income	(1,647)	878
Comprehensive loss (income) attributable to noncontrolling interests	7	(1)
Comprehensive (loss) income attributable to common stockholders	$ (1,640)	$ 877

Consolidated Statements of Equi

Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Cumulative Distributions	Accumulated Deficit	Accumulated Other Comprehensive Income	Total Stockholders’ Equity	Non- controlling Interests
Beginning balance (shares) at Dec. 31, 2017		77,175,283
Beginning balance at Dec. 31, 2017	$ 562,544	$ 76	$ 656,705	$ (82,590)	$ (12,672)	$ 949	$ 562,468	$ 76
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Gross proceeds from issuance of common stock (shares)		762,537
Gross proceeds from issuance of common stock	7,430	$ 1	7,429				7,430
Changes in redeemable common stock	(6,538)		(6,538)				(6,538)
Discount on issuance of common stock	(1)		(1)				(1)
Stock-based compensation (in shares)		10,500
Stock-based compensation	44		44				44
Offering costs including dealer manager fees and stockholder servicing fees to affiliates	(1,140)		(1,140)				(1,140)
Distributions to common stockholders	(22,709)			(22,709)			(22,709)
Issuance of shares for distribution reinvestment plan (shares)		2,083,950
Issuance of shares for distribution reinvestment plan	0	$ 2	19,996	(19,998)
Repurchase of common stock (in shares)		(2,506,299)
Repurchase of common stock	(23,766)	$ (3)	(23,763)	0			(23,766)
Additions to common stock subject to redemption	3,768	$ 0	3,768				3,768
Issuance of stock dividends (in shares)		2
Issuance of limited partnership units	1,185							1,185
Distributions to noncontrolling interest	(70)							(70)
Net (loss)	(3,287)				(3,281)		(3,281)	(6)
Other comprehensive loss	$ (952)					(949)	(949)	(3)
Ending balance (shares) at Dec. 31, 2018	77,525,973	77,525,973
Ending balance at Dec. 31, 2018	$ 516,508	$ 76	656,500	(125,297)	(15,953)	0	515,326	1,182
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation (in shares)		10,500
Stock-based compensation	106		106				106
Offering costs including dealer manager fees and stockholder servicing fees to affiliates	(13)		(13)				(13)
Distributions to common stockholders	(7,193)			(7,193)			(7,193)
Issuance of shares for distribution reinvestment plan (shares)		345,400
Issuance of shares for distribution reinvestment plan	3,323	$ 1	3,322	(3,323)
Additions to common stock subject to redemption	83		83				83
Issuance of limited partnership units	3,904							3,904
Distributions to noncontrolling interest	(47)							(47)
Net (loss)	$ (1,647)				(1,640)		(1,640)	(7)
Other comprehensive loss								0
Ending balance (shares) at Mar. 31, 2019	77,881,873	77,881,873
Ending balance at Mar. 31, 2019	$ 511,701	$ 77	$ 659,998	$ (135,813)	$ (17,593)	$ 0	$ 506,669	$ 5,032

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Operating Activities:
Net (loss) income	$ (1,647)	$ 804
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation of building and improvements	5,062	5,031
Amortization of tenant origination and absorption costs	5,967	5,967
Amortization of above and below market leases	(1,158)	(1,158)
Amortization of deferred financing costs	394	274
Deferred rent	(1,132)	(2,935)
Stock based compensation	106	24
Unrealized loss on interest rate swap	0	77
Performance distribution allocation (non-cash)	1,920	1,030
Change in operating assets and liabilities:
Other assets, net	1,646	1,797
Accrued expenses and other liabilities, net	(7,994)	(2,338)
Due to affiliates, net	(3,866)	(60)
Net cash (used in) provided by operating activities	(702)	8,513
Investing Activities:
Restricted reserves	147	(98)
Improvements to real estate	0	(1)
Payments for construction in progress	(270)	(83)
Net cash used in investing activities	(123)	(182)
Financing Activities:
Proceeds from borrowings - Term Loan	10,000	0
Issuance of common stock, net of offering costs	(1,115)	(911)
Financing deposits	0	(5,275)
Repurchase of common stock	0	(1,987)
Distributions paid to common stockholders	(8,941)	(4,943)
Distributions paid to noncontrolling interests	(19)	(3)
Net cash used in financing activities	(75)	(13,119)
Net decrease in cash, cash equivalents and restricted cash	(900)	(4,788)
Cash, cash equivalents and restricted cash at the beginning of the period	41,527	46,050	$ 46,050
Cash, cash equivalents and restricted cash at the end of the period	40,627	41,262	41,527
Supplemental Disclosures of Significant Non-Cash Transactions:
Increase in fair value swap agreement	0	74
(Decrease) increase in distribution payable to common stockholders	(1,748)	56
Common stock issued pursuant to the distribution reinvestment plan	3,323	5,483	$ 0
Operating partnership units issued	$ 3,904	$ 1,185

Organization

Organization	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Griffin Capital Essential Asset REIT II, Inc., a Maryland corporation (the “Company”), was formed on November 20, 2013 under the Maryland General Corporation Law (the "MGCL") and qualified as a real estate investment trust (“REIT”) commencing with the year ended December 31, 2015. The Company was organized primarily with the purpose of acquiring single tenant net lease properties that are considered essential to the occupying tenant, and has used a substantial amount of the net proceeds from its initial public offering ("IPO") to invest in such properties. The Company’s year end is December 31. On December 14, 2018, the Company, Griffin Capital Essential Asset Operating Partnership II, L.P. (the "Operating Partnership"), Globe Merger Sub, LLC, a wholly-owned subsidiary of the Company (“Merger Sub”), Griffin Capital Essential Asset REIT, Inc. ("GCEAR"), and Griffin Capital Essential Asset Operating Partnership, L.P. (the "GCEAR Operating Partnership") entered into an Agreement and Plan of Merger (the “Merger Agreement”). On April 30, 2019, pursuant to the Merger Agreement, (i) GCEAR merged with and into Merger Sub, with Merger Sub surviving as a direct, wholly-owned subsidiary of the Company (the “Company Merger”) and (ii) the Operating Partnership merged with and into the GCEAR Operating Partnership (the “Partnership Merger” and, together with the Company Merger, the “Mergers”), with the GCEAR Operating Partnership surviving the Partnership Merger. At such time, (i) in accordance with the applicable provisions of the Maryland General Corporation Law and the Maryland Limited Liability Company Act, the separate existence of GCEAR ceased and (ii) in accordance with the Delaware Revised Uniform Limited Partnership Act, the separate existence of the Operating Partnership ceased. In addition, on April 30, 2018, following the Partnership Merger, Merger Sub merged into the Company. Much of the historical information regarding the Company's structure and agreements presented in this Note 1 and throughout the rest of these Notes to Consolidated Financial Statements has materially changed because of the Mergers, but did apply as of March 31, 2019. See Note 12, Subsequent Events , for additional details. Prior to the execution of the Merger Agreement, on December 14, 2018, GCEAR, a non-traded REIT formerly sponsored by Griffin Capital Company, LLC ("GCC"), entered into a series of transactions and became self-managed (the “Self Administration Transaction”) and succeeded to the advisory, asset management and property management arrangements formerly in place for the Company. Accordingly, the sponsor of the Company changed from GCC to Griffin Capital Real Estate Company, LLC (the "Sponsor" or "GRECO") until the Company Merger was consummated. See Note 12, Subsequent Events , for additional details. Griffin Capital Essential Asset Advisor II, LLC, a Delaware limited liability company (the “Advisor”), was formed on November 19, 2013. GRECO is the sole member of the Advisor. As of December 14, 2018, GRECO is owned by Griffin Capital Essential Asset Operating Partnership, L.P. (the "GCEAR Operating Partnership") and Griffin Capital Essential Asset TRS, Inc., a Delaware corporation. The Advisor was responsible for managing the Company’s affairs on a day-to-day basis and identifying and making acquisitions and investments on behalf of the Company under the terms of the Advisory Agreement (as defined below). Griffin Capital Securities, LLC (the “Dealer Manager”) is a Delaware limited liability company and is a wholly-owned subsidiary of Griffin Capital, LLC (“GC”), a Delaware limited liability company. The Company’s former sponsor, GCC, is the sole member of GC. The Dealer Manager is responsible for marketing the Company’s shares offered pursuant to the Company's public offerings. The Company’s property manager is Griffin Capital Essential Asset Property Management II, LLC, a Delaware limited liability company (the “Property Manager”), which was formed on November 19, 2013 to manage the Company’s properties, or provide oversight of other property managers engaged by the Company or an affiliate of the Company. The Property Manager derives substantially all of its income from the property management services it performs for the Company. The Property Manager is owned by Griffin Capital Property Management, LLC, which is owned by GRECO. The Operating Partnership owned, directly or indirectly, all of the properties acquired by the Company. The Operating Partnership conducted certain activities through the Company’s taxable REIT subsidiary, Griffin Capital Essential Asset TRS II, Inc., a Delaware corporation (the “TRS”), formed on November 22, 2013, which is a wholly-owned subsidiary of the Operating Partnership. The TRS had no activity as of March 31, 2019 . On September 20, 2017, the Company commenced a follow-on offering of up to $2.2 billion of shares (the "Follow-On Offering"), consisting of up to $2.0 billion of shares in the Company's primary offering and $0.2 billion of shares pursuant to the distribution reinvestment plan ("DRP"). Pursuant to the Follow-On Offering, the Company offered to the public four new classes of shares of common stock: Class T shares, Class S shares, Class D shares, and Class I shares (the “New Shares”) with net asset value (“NAV”) based pricing. The share classes have different selling commissions, dealer manager fees, and ongoing distribution fees. In connection with the Follow-On Offering, the Company reclassified all Class T and Class I shares sold in its IPO as "Class AA" and "Class AAA" shares, respectively. On September 20, 2017, the Company entered into an amended and restated advisory agreement (the "Advisory Agreement") with the Advisor and the Operating Partnership, which replaced the original advisory agreement and modified various provisions including the fees and expense reimbursements payable to the Advisor. See Note 9, Related Party Transactions , for additional details. In connection with the Follow-On Offering, the Company's board of directors (the "Board") adopted an amended and restated DRP effective as of September 30, 2017 to include all of its shares, including the New Shares, under the DRP. In connection with the Follow-On Offering, the Board adopted a share redemption program for the New Shares (and IPO shares that have been held for four years or longer) (the “SRP”). On June 4, 2018, the Board amended and restated the SRP to allow stockholders of the Company’s IPO shares to utilize the SRP, effective as of July 5, 2018. Prior to that time, the Company had a separate share redemption program for its IPO shares. See Note 7, Equity , for additional details. Under the SRP, stockholders are allowed to redeem their shares after a one -year holding period at a redemption price equal to the NAV per share for the applicable class generally on the 13th day of the month prior to quarter end. On August 16, 2018, the Board approved the temporary suspension of the primary portion of the Follow-On Offering, effective August 17, 2018. On December 12, 2018, the Company also temporarily suspended the DRP offering and the SRP. Beginning in January 2019, all distributions by the Company were paid in cash. The SRP was officially suspended as of January 19, 2019. On February 15, 2019, the Board determined it was in the best interests of the Company to reinstate the DRP effective with the February distribution paid on or around March 1, 2019.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies There have been no significant changes to the Company’s accounting policies since the Company filed its audited financial statements in its Annual Report on Form 10-K for the year ended December 31, 2018 . For further information about the Company’s accounting policies, refer to the Company’s consolidated financial statements and notes thereto for the year ended December 31, 2018 included in the Company’s Annual Report on Form 10-K filed with the SEC. The accompanying unaudited consolidated financial statements of the Company are prepared by management on the accrual basis of accounting and in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information as contained in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”), and in conjunction with rules and regulations of the SEC. Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the unaudited consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The unaudited consolidated financial statements include accounts and related adjustments, which are, in the opinion of management, of a normal recurring nature and necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the interim period. Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ended December 31, 2019 . These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 . The consolidated financial statements of the Company include all accounts of the Company, the Operating Partnership, and its subsidiaries. Intercompany transactions are not shown on the consolidated statements. However, each property-owning entity is a wholly-owned subsidiary which is a special purpose entity ("SPE"), whose assets and credit are not available to satisfy the debts or obligations of any other entity, except to the extent required with respect to any co-borrower or guarantor under the same credit facility. Use of Estimates The preparation of the unaudited consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the unaudited consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates. Per Share Data The Company reports earnings per share for the period as (1) basic earnings per share computed by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding during the period, and (2) diluted earnings per share computed by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding, including common stock equivalents. As of March 31, 2019 and December 31, 2018 , common stock equivalents included in dilutive earnings (loss) per share would have been anti-dilutive for common stockholders. Segment Information ASC Topic 280, Segment Reporting , establishes standards for reporting financial and descriptive information about a public entity’s reportable segments. The Company evaluates all of the properties and interests therein as one reportable segment. Reclassification of the prior year presentation of rental income and property expense recovery As described below, rental income and property expense recovery related to the Company's operating leases for which the Company is the lessor qualified for the single component practical expedient and was classified as rental income in the Company's consolidated statements of operations. Prior to the adoption of the new lease accounting standard, the Company classified rental income and property expense recovery separately in the Company's consolidated statements of operations, in accordance with the guidance in effect prior to January 1, 2019. Upon adoption of the new lease accounting standard, the Company comparative statement of operations of prior year have been reclassified to conform to the new single component presentation of rental income and property expense recovery, classified within rental income in the Company's consolidated statements of operations. The table below provides a reconciliation of the prior period presentation of the statement of operations line items that were reclassified in the Company's consolidated statement of operations to conform to the current period presentation, pursuant to the adoption of the new lease accounting standard and election of the single component practical expedient (in thousands): Three Months Ended March 31, 2018 Rental income (presentation prior to January 1, 2019) $ 22,010 Property expense recovery (presentation prior to January 1, 2019) 4,779 Rental income (presentation effective January 1, 2019) $ 26,789 Recently Issued Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-02, Leases ("ASU No. 2016-02"). ASU No. 2016-02 amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU No. 2016-02 will direct how the Company accounts for payments from the elements of leases that are generally fixed and determinable at the inception of the lease (“Fixed Lease Payments”) while ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU No. 2014-09") will direct how the Company accounts for the non-lease components of lease contracts, primarily expense reimbursements (“Non-Lease Payments”) and the accounting for the disposition of real estate facilities. ASU No. 2016-02 was effective beginning in the first quarter of 2019. Early adoption of ASU No. 2016-02 as of its issuance is permitted. ASU No. 2016-02 requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. Based on the required adoption date of January 1, 2019, the modified retrospective method for ASU No. 2016-02 requires application of the standard to all leases that exist at, or commence after, January 1, 2017 (beginning of the earliest comparative period presented in the 2019 financial statements), with a cumulative adjustment to the opening balance of accumulated earnings (deficit) on January 1, 2017, for the effect of applying the standard at the date of initial application, and restatement of the amounts presented prior to January 1, 2019. The FASB has also issued an amendment to the standard that would provide an entity an optional transition method to initially account for the impact of the adoption of the standard with a cumulative adjustment to accumulated earnings (deficit) on January 1, 2019 (the effective date of ASU No. 2016-02), rather than January 1, 2017, which would eliminate the need to restate amounts presented prior to January 1, 2019. Under ASU No. 2016-02, an entity may elect a practical expedient package, which states that: (1) an entity need not reassess whether any expired or existing contracts are leases or contain leases; (2) an entity need not reassess the lease classification for any expired or existing leases; and (3) an entity need not reassess initial direct costs for any existing leases. These three practical expedients are available as a single election that must be elected as a package and must be consistently applied to all existing leases at the date of adoption. The Company elected to adopt the three practical expedients as a single election effective January 1, 2019. In July 2018, the FASB approved an amendment to the ASU to allow lessors to elect, as a practical expedient, not to allocate the total consideration to lease and non-lease components based on their relative standalone selling prices. The single-lease component practical expedient allows lessors to elect a combined single-lease component presentation if (1) the timing and pattern of transfer of the lease component and the non-lease component(s) associated with it are the same, and (2) the lease component would be classified as an operating lease if it were accounted for separately. Non-lease components that do not meet the criteria of this practical expedient and combined components in which the non-lease component is the predominant component will be accounted for under the new revenue recognition ASU. ASU No. 2016-02 had no impact on the Company's accounting for Fixed Lease Payments because the Company's accounting policy is consistent with the provisions of the standard. The Company elected to adopt the practical expedient mentioned above, which treats payments for expense reimbursements that qualify as Non-Lease Payments and meet the criteria above as single lease components. Under ASU No. 2016-02, reimbursements relating to property taxes and insurances are Fixed Lease Payments as the payments relate to the right to use the leased assets, while reimbursements relating to maintenance activities and common area expense are Non-Lease Payments and are accounted under ASU No. 2016-02, assuming the Non-Lease Payments meet the criteria above. Additionally, the Company analyzed its current lease obligations under ASU No. 2016-02 where the Company is the lessee. Since there are no leases where the Company is the lessee, there was no impact on the consolidated financial statements as of March 31, 2019.

Real Estate

Real Estate	3 Months Ended
	Mar. 31, 2019
Real Estate [Abstract]
Real Estate	Real Estate As of March 31, 2019 , the Company's real estate portfolio consisted of 27 properties ( 35 buildings) in 17 states consisting of office, industrial, distribution, and data center facilities with a combined acquisition value of $1.1 billion including the allocation of the purchase price to above and below-market lease valuation, encompassing approximately 7.3 million square feet. Depreciation expense for buildings and improvements for the three months ended March 31, 2019 was $5.1 million . Amortization expense for intangibles, including, but not limited to, tenant origination and absorption costs, for the three months ended March 31, 2019 was $6.0 million . Future Minimum Contractual Rent Payments The future minimum contractual rent payments pursuant to the current lease terms are shown in the table below. The Company's current leases have expirations ranging from 2021 to 2044. As of March 31, 2019 Remaining 2019 $ 59,269 2020 80,495 2021 72,680 2022 73,541 2023 71,311 Thereafter 457,574 Total $ 814,870 Intangibles The Company allocated a portion of the acquired real estate asset value to in-place lease valuation and tenant origination and absorption cost. The in-place lease was measured against comparable leasing information and the present value of the difference between the contractual, in-place rent and the fair market rent was calculated using, as the discount rate, the capitalization rate utilized to compute the value of the real estate at acquisition. March 31, 2019 December 31, 2018 In-place lease valuation (above market) $ 4,046 $ 4,046 In-place lease valuation (above market), accumulated amortization (1,215 ) (1,123 ) Intangible assets, net $ 2,831 $ 2,923 In-place lease valuation (below market) $ (62,070 ) $ (62,070 ) In-place lease valuation (below market) - accumulated amortization 17,091 15,841 In-place lease valuation (below market), net $ (44,979 ) $ (46,229 ) Tenant origination and absorption cost $ 240,364 $ 240,364 Tenant origination and absorption cost - accumulated amortization (77,331 ) (71,364 ) Tenant origination and absorption cost, net $ 163,033 $ 169,000 The following table sets forth the estimated annual amortization (income) expense for in-place lease valuation and tenant origination and absorption costs as of March 31, 2019 for the next five years : Year In-Place Lease Valuation Tenant Origination and Absorption Costs Remaining 2019 $ (3,537 ) $ 18,232 2020 $ (4,695 ) $ 24,198 2021 $ (3,799 ) $ 19,715 2022 $ (3,774 ) $ 19,256 2023 $ (2,901 ) $ 16,502

Debt

Debt	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Debt	Debt As of March 31, 2019 and December 31, 2018 , the Company's debt and related deferred financing costs consisted of the following: March 31, 2019 December 31, 2018 Contractual Interest Rate (1) Payment Type Loan Maturity Effective Interest Rate (2) BofA/KeyBank Loan $ 250,000 $ 250,000 4.32% Interest Only May 2028 4.42% AIG Loan 126,970 126,970 4.15% Interest Only (3) November 2025 4.22% Total Mortgage Debt 376,970 376,970 Term Loan 123,000 113,000 LIBOR + 1.25% (4) Interest Only June 2023 3.81% Revolving credit facility 85 85 LIBOR + 1.30% (4) Interest Only June 2023 (5) 4.04% Total Debt 500,055 490,055 Unamortized deferred financing costs (7,706 ) (8,100 ) Total Debt, net $ 492,349 $ 481,955 (1) The weighted average interest rate as of March 31, 2019 was approximately 4.18% for the Company's fixed-rate and variable-rate debt combined. (2) Includes the effect of amortization of deferred financing costs. (3) The AIG Loan (as defined below) requires monthly payments of interest only, at a fixed rate, for the first five years and fixed monthly payments of principal and interest thereafter. (4) The London Interbank Offered Rate ("LIBOR") as of March 31, 2019 was 2.50% . (5) The revolving credit facility has an initial term of four years, maturing on June 28, 2022, and may be extended for a one -year period if certain conditions are met and upon payment of an extension fee. See discussion below. Amended and Restated Credit Agreement On June 28, 2018, the Company, through the Operating Partnership, entered into an amended and restated credit agreement (the "Amended and Restated Credit Agreement") related to a revolving credit facility and a term loan (collectively, the "Unsecured Credit Facility") with a syndicate of lenders, under which KeyBank, National Association ("KeyBank") serves as administrative agent, and various notes related thereto. In addition, the Company entered into a guaranty agreement. Pursuant to the Amended and Restated Credit Agreement, the Company was provided with a revolving credit facility in an initial commitment amount of up to $550 million and a term loan (the "Term Loan") in an initial commitment amount of up to $200 million , which commitments may be increased under certain circumstances up to a maximum total commitment of $1.25 billion . Any increase in the total commitment will be allocated to the revolving credit facility and/or the term loan in such amounts as the Operating Partnership and KeyBank may determine. The revolving credit facility may be prepaid and terminated, in whole or in part, at any time without fees or penalty. The revolving credit facility has an initial term of four years , maturing on June 28, 2022. The revolving credit facility may be extended for a one -year period if certain conditions are met and the Operating Partnership pays an extension fee. Payments under the revolving credit facility are interest only and are due on the first day of each quarter. Amounts borrowed under the revolving credit facility may be repaid and reborrowed, subject to the terms of the Amended and Restated Credit Agreement. The Term Loan has an initial term of five years , maturing on June 28, 2023. Payments under the Term Loan are interest only and are due on the first day of each quarter. Amounts borrowed under the Term Loan may not be repaid and reborrowed. On April 30, 2019, the Company, through the GCEAR Operating Partnership, entered into that certain second amended and restated credit agreement (the "Second Amended and Restated Credit Agreement") related to a revolving credit facility and three term loans with a syndicate of lenders, under which KeyBank serves as administrative agent. See Note 12, Subsequent Events , for additional details. As of March 31, 2019 , the remaining capacity pursuant to the Unsecured Credit Facility was $214.4 million . Bank of America and KeyBank Loan On April 27, 2018, the Company, through four SPEs that own the respective four properties noted below and owned by the Operating Partnership, entered into a loan agreement (the "Loan Agreement”) with Bank of America, N.A. and KeyBank (together with their successors and assigns, collectively, the "Lender") in which the Company borrowed $250.0 million (the "BofA/KeyBank Loan"). The Company utilized approximately $249.8 million of the proceeds provided by the BofA/KeyBank Loan to pay down a portion of the revolving credit facility. In connection with this pay down of the revolving credit facility, KeyBank released four of the special purpose entities owned by the Company's Operating Partnership from their obligations as guarantors under the revolving credit facility. The BofA/KeyBank Loan is secured by cross-collateralized and cross-defaulted first mortgage liens on the properties with the following tenants: 3M Company, Amazon.com.dedc LLC, Southern Company Services, Inc. and IGT (each, a "Secured Property"). In connection with this transaction, the Company entered into a nonrecourse carve-out guaranty agreement. In addition to their first mortgage lien, the Lender also has a security interest in all other property relating to the ownership, use, maintenance or operation of the improvements on each Secured Property and all rents, profits and revenues from each Secured Property. The BofA/KeyBank Loan has a term of 10 years , maturing on May 1, 2028. The BofA/KeyBank Loan bears interest at an annual rate of 4.32% . Commencing on June 1, 2020, the BofA/KeyBank Loan may be prepaid but only if such prepayment is made in full (with certain exceptions), subject to certain conditions set forth in the Loan Agreement, including 30 days ' prior notice to the Lender and payment of a prepayment premium in addition to all unpaid principal and accrued interest to the date of such prepayment. Commencing on November 1, 2027, the BofA/KeyBank Loan may be prepaid in whole or in part, subject to satisfaction of certain conditions, including 30 days ' prior notice to the Lender, without payment of any prepayment premium. As of March 31, 2019 , there was approximately $250.0 million outstanding pursuant to the BofA/KeyBank Loan. AIG Loan On October 22, 2015, six SPEs that are wholly owned by the Operating Partnership entered into promissory notes with The Variable Annuity Life Insurance Company, American General Life Insurance Company, and the United States Life Insurance Company (collectively, the "Lenders"), pursuant to which the Lenders provided such SPEs with a loan in the aggregate amount of approximately $127.0 million (the "AIG Loan"). The AIG Loan has a term of 10 years , maturing on November 1, 2025. The AIG Loan bears interest at a rate of 4.15% . The AIG Loan requires monthly payments of interest only for the first five years and fixed monthly payments of principal and interest thereafter. The AIG Loan is secured by cross-collateralized and cross-defaulted first lien deeds of trust and second lien deeds of trust on certain properties. Commencing October 31, 2017, each of the individual promissory notes comprising the AIG Loan may be prepaid but only if such prepayment is made in full, subject to 30 days ' prior notice to the holder and payment of a prepayment premium in addition to all unpaid principal and accrued interest to the date of such prepayment. As of March 31, 2019 , there was approximately $127.0 million outstanding pursuant to the AIG Loan. Debt Covenant Compliance Pursuant to the terms of the Unsecured Credit Facility, BofA/KeyBank Loan and AIG Loan, the Company is subject to certain loan compliance covenants. The Company was in compliance with all applicable covenants as of March 31, 2019 .

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company is required to disclose fair value information about all financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practicable to estimate fair value. The Company measures and discloses the estimated fair value of financial assets and liabilities utilizing a fair value hierarchy that distinguishes between data obtained from sources independent of the reporting entity and the reporting entity’s own assumptions about market participant assumptions. This hierarchy consists of three broad levels, as follows: (i) quoted prices in active markets for identical assets or liabilities, (ii) "significant other observable inputs," and (iii) "significant unobservable inputs." "Significant other observable inputs" can include quoted prices for similar assets or liabilities in active markets, as well as inputs that are observable for the asset or liability, such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. "Significant unobservable inputs" are typically based on an entity’s own assumptions, since there is little, if any, related market activity. In instances in which the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level of input that is significant to the fair value measurement in its entirety. The Company's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. There were no transfers between the levels in the fair value hierarchy during the three months ended March 31, 2019 and the year ended December 31, 2018 . Financial instruments as of March 31, 2019 and December 31, 2018 consisted of cash and cash equivalents, restricted cash, accounts receivable, accounts payable, other accrued expenses, and borrowings. With the exception of the mortgage loans in the table below, the amounts of the financial instruments presented in the consolidated financial statements substantially approximate their fair value as of March 31, 2019 and December 31, 2018 . The fair value of the mortgage loan is estimated by discounting the loan’s principal balance over the remaining term of the mortgage using current borrowing rates available to the Company for debt instruments with similar terms and maturities. The Company determined that the mortgage loan valuation in its entirety is classified in Level 2 of the fair value hierarchy, as the fair value is based on current pricing for debt with similar terms as the in-place debt, and there were no transfers into and out of fair value measurement levels during the three months ended March 31, 2019 and for the year ended December 31, 2018 . March 31, 2019 December 31, 2018 Fair Value Carrying Value (1) Fair Value Carrying Value (1) AIG Loan $ 120,805 $ 126,970 $ 120,599 $ 126,970 BofA/KeyBank Loan 256,299 250,000 249,566 250,000 (1) The carrying value of the AIG and BofA/KeyBank Loan Loans do not include deferred financing costs as of March 31, 2019 and December 31, 2018 . See Note 4, Debt , for details.

Accrued Expenses and Other Liab

Accrued Expenses and Other Liabilities	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Accrued Expenses and Other Liabilities	Accrued Expenses and Other Liabilities Accrued expenses and other liabilities consisted of the following as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 Prepaid rent $ 4,305 $ 4,709 Accrued property taxes 2,446 2,955 Interest expense payable 2,878 2,805 Other liabilities 3,332 10,554 Total $ 12,961 $ 21,023

Equity

Equity	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Equity	Equity Status of Offerings On January 20, 2017, the Company closed the primary portion of the IPO; however, the Company continued to offer shares pursuant to the DRP under the IPO registration statement through May 2017. On September 20, 2017, the Company commenced the Follow-On Offering of up to $2.2 billion of shares, consisting of up to $2.0 billion of shares in the Company's primary offering and $0.2 billion of shares pursuant to the DRP. The Company reclassified all Class T and Class I shares sold in the IPO as "Class AA" and "Class AAA" shares, respectively. The Company offered Class T shares, Class S shares, Class D shares, and Class I shares in the primary portion of the Follow-On Offering and all seven of its share classes pursuant to the DRP. On August 16, 2018, the Board approved the temporary suspension of the primary portion of the Company's Follow-On Offering, effective August 17, 2018, to allow the special committee of the Board to evaluate a potential strategic alternative. On December 12, 2018, in connection with the Merger Agreement, the Board approved the temporary suspension of the DRP and SRP. Redemptions submitted for the fourth quarter of 2018 were honored in accordance with the terms of the SRP, and the SRP was officially suspended as of January 19, 2019. The DRP officially was suspended as of December 30, 2018. Beginning in January 2019, all distributions by the Company were paid in cash. On February 15, 2019, the Board determined it was in the best interests of the Company to reinstate the DRP effective with the February distribution paid on March 1, 2019. The SRP shall remain suspended until such time, if any, as the Board may approve the resumption of the SRP. At this time, the Board intends to reinstate the SRP in the third quarter of 2019, however there is no guarantee that the Board will do so. Share Classes Class T shares, Class S shares, Class D shares, Class I shares, Class A shares, Class AA shares and Class AAA shares vote together as a single class, and each share is entitled to one vote on each matter submitted to a vote at a meeting of the Company's stockholders; provided that with respect to any matter that would only have a material adverse effect on the rights of a particular class of common stock, only the holders of such affected class are entitled to vote . The following table summarizes shares issued and gross proceeds received for each share class as of March 31, 2019 and outstanding shares as of March 31, 2019 and December 31, 2018 : Class T S D I A AA AAA Total Gross proceeds from primary portion of offerings $ 2,245 $ 3 $ 182 $ 7,538 $ 240,780 $ 474,858 $ 8,381 $ 733,987 Gross proceeds from DRP $ 33 $ — $ 4 $ 215 $ 27,645 $ 36,795 $ 583 $ 65,275 Shares issued in primary portion of offerings 224,647 264 18,921 786,573 24,199,764 47,562,870 901,225 73,694,264 DRP shares issued 3,454 17 455 22,311 2,909,959 3,872,290 61,378 6,869,864 Stock distribution shares issued — — — — 263,642 300,166 4,677 568,485 Restricted stock issued — — — 10,500 — — 36,000 46,500 Total redemptions — — — — (1,528,918 ) (1,744,366 ) (23,956 ) (3,297,240 ) Total shares outstanding as of March 31, 2019 228,101 281 19,376 819,384 25,844,447 49,990,960 979,324 77,881,873 Total shares outstanding as of December 31, 2018 227,311 279 19,268 806,014 25,729,035 49,768,687 975,379 77,525,973 Organizational and Offering Costs Pursuant to the Advisory Agreement, in no event will the Company be obligated to reimburse the Advisor for organizational and offering costs incurred in connection with the Follow-On Offering totaling in excess of 15% (including selling commissions, dealer manager fees, distribution fees and non-accountable due diligence expense allowance, but excluding acquisition expenses or any fees, if ever applicable) of the gross proceeds raised in the Follow-On Offering (excluding gross proceeds from the DRP). If the organizational and offering costs exceed such limits discussed above, within 60 days after the end of the month in which the Follow-On Offering terminates or is completed, the Advisor is obligated to reimburse the Company for any excess amounts. As long as the Company is subject to the Statement of Policy Regarding Real Estate Investment Trusts published by the North American Securities Administrators Association (“NASAA REIT Guidelines”), such limitation discussed above will also apply to any future public offerings. As of March 31, 2019 , organizational and offering costs relating to the Follow-On Offering were 37.1% (approximately $3.7 million ) of gross offering proceeds ( $10.0 million ), including selling commissions, dealer manager fees and distribution fees. Therefore, if the Follow-On Offering had been terminated on March 31, 2019 , the Company would owe the Advisor $1.5 million and the Advisor would be liable for organizational and offering costs incurred by the Company of approximately $2.2 million . Approximately $0.9 million of organizational and offering costs the Advisor is liable for as of March 31, 2019 is deducted from "Due to Affiliates" and the remaining $1.3 million is included in "Other Assets, net" on the consolidated balance sheet. Organizational and offering costs incurred as of March 31, 2019 , including those incurred by the Company and due to the Advisor, for the Follow-On Offering are as follows: March 31, 2019 Cumulative offering costs $ 3,161 Cumulative organizational costs $ 536 Organizational and offering costs advanced by the Advisor $ 2,244 Organizational and offering costs paid by the Company 1,453 Adjustment to organizational and offering costs pursuant to the limitation: Costs in excess of limit (2,202 ) Organizational and offering costs incurred $ 1,495 Distribution Reinvestment Plan (DRP) The Company has adopted the DRP, which allows stockholders to have dividends and other distributions otherwise distributable to them invested in additional shares of common stock of the same class. No selling commissions, dealer manager fees or stockholder servicing fees are paid on shares sold through the DRP, but the DRP shares will be charged the applicable distribution fee payable with respect to all shares of the applicable class. The purchase price per share under DRP is equal to the NAV per share applicable to the class of shares purchased, calculated as of the distribution date. The Company may amend or terminate the DRP for any reason at any time upon 10 days ' prior written notice to stockholders, which may be provided through the Company's filings with the SEC. On December 12, 2018, in connection with the Merger Agreement, the Board approved the temporary suspension of the DRP. The DRP officially was suspended as of December 30, 2018; on February 15, 2019, the Board determined it was in the best interests of the Company to reinstate the DRP effective with the February distribution paid on March 1, 2019. IPO Share Redemption Program The Company had a share redemption program for holders of Class A, Class AA, and Class AAA shares ("IPO Shares") who held their shares for less than four years, which enabled IPO stockholders to sell their shares back to the Company in limited circumstances ("IPO Share Redemption Program"). On June 4, 2018, the Board approved the termination of the IPO Share Redemption Program effective as of July 5, 2018. In addition, effective as of such date, the Board amended and restated the SRP in order to allow stockholders of the IPO Shares to utilize the SRP. Accordingly, beginning in July 2018, stockholders of IPO Shares are able to continue to redeem at 100% of the NAV of the applicable share class, subject to the other limitations and conditions of the amended and restated SRP, as noted below. During the three months ended March 31, 2019 and 2018 , the Company redeemed shares of its outstanding common stock under the IPO Share Redemption Program as follows: Three Months Ended March 31, 2019 2018 Shares of common stock redeemed — 217,088 Weighted average price per share $ — $ 9.15 Share Redemption Program In connection with the Follow-On Offering, the Board adopted the SRP for the New Shares (and IPO Shares that have been held for four years or longer). As noted above, subsequently, on June 4, 2018, the Board amended and restated the SRP to allow stockholders of the IPO Shares to utilize the SRP, effective as of July 5, 2018. On December 12, 2018, in connection with the Merger Agreement, the Board approved the temporary suspension of the SRP. The SRP officially was suspended as of December 30, 2018, and shall remain suspended until such time, if any, as the Board may approve the resumption of the SRP. Under the SRP, the Company will redeem shares as of the last business day of each quarter. The redemption price will be equal to the NAV per share for the applicable class generally on the 13th day of the month prior to quarter end. Redemption requests must be received by 4:00 p.m. (Eastern time) on the second to last business day of the applicable quarter. Redemption requests exceeding the quarterly cap will be filled on a pro rata basis. With respect to any pro rata treatment, redemption requests following the death or qualifying disability of a stockholder will be considered first, as a group, followed by requests where pro rata redemption would result in a stockholder owning less than the minimum balance of $2,500 of shares of the Company's common stock, which will be redeemed in full to the extent there are available funds, with any remaining available funds allocated pro rata among all other redemption requests. All unsatisfied redemption requests must be resubmitted after the start of the next quarter, or upon the recommencement of the SRP, as applicable. There are several restrictions under the SRP. Stockholders generally have to hold their shares for one year before submitting their shares for redemption under the program; however, the Company will waive the one-year holding period in the event of the death or qualifying disability of a stockholder. Shares issued pursuant to the DRP are not subject to the one-year holding period. In addition, the SRP generally imposes a quarterly cap on aggregate redemptions of the Company's shares equal to a value of up to 5% of the aggregate NAV of the outstanding shares as of the last business day of the previous quarter. As the value on the aggregate redemptions of the Company's shares is outside the Company's control, the 5% quarterly cap is considered to be temporary equity and is presented as the common stock subject to redemption on the accompanying consolidated balance sheets. As of March 31, 2019 , the quarterly cap was approximately $37.3 million . During the three months ended March 31, 2019 and 2018 , no shares were redeemed. Since inception, the Company has honored all redemption requests related to the SRP and has redeemed a total of 1,199,464 shares of common stock for approximately $11.5 million at a weighted average price per share of $9.62 . The Board has the right to modify or suspend the SRP upon 30 days ' notice at any time if it deems such action to be in the Company’s best interest. Any such modification or suspension will be communicated to stockholders through the Company’s filings with the SEC. On December 12, 2018, the Board temporarily suspended the SRP, effective as of January 19, 2019. At this time, the Board intends to reinstate the SRP in the third quarter, however there is no guarantee that the Board will do so.

Noncontrolling Interests

Noncontrolling Interests	3 Months Ended
	Mar. 31, 2019
Noncontrolling Interest [Abstract]
Noncontrolling Interests	Noncontrolling Interests Noncontrolling interests represent limited partnership interests in the Operating Partnership, of which the Company is the general partner. The Operating Partnership issued 20,000 Class A limited partnership units for $10 .00 per unit on February 11, 2014 to the Advisor in exchange for the initial capitalization of the Operating Partnership. On February 14, 2019, as elected by the Advisor, the Company issued 403,266 Operating Partnership units for $9.68 per unit to the Advisor for the 50% of the 2018 performance distribution allocation that the Advisor elected to receive in Class I limited partnership units. The remaining balance was paid in cash. As of March 31, 2019 , noncontrolling interests were approximately 0.70% of total shares outstanding and 0.45% of weighted average shares outstanding (both measures assuming limited partnership units were converted to common stock). The Company evaluates individual noncontrolling interests for the ability to recognize the noncontrolling interest as permanent equity on the consolidated balance sheets at the time such interests are issued and on a continual basis. Any noncontrolling interest that fails to qualify as permanent equity will be reclassified as temporary equity and adjusted to the greater of (a) the carrying amount, or (b) its redemption value as of the end of the period in which the determination is made. The limited partners of the Operating Partnership will have the right to cause the Operating Partnership to redeem their limited partnership units for cash equal to the value of an equivalent number of shares, or, at the Company’s option, the Company may purchase such limited partners' limited partnership units by issuing one share of common stock for each limited partnership unit redeemed. These rights may not be exercised under certain circumstances which could cause the Company to lose its REIT election. Furthermore, limited partners generally may exercise their redemption rights only after their limited partnership units have been outstanding for one year . The limited partnership units are reported on the consolidated balance sheets as noncontrolling interests. The following summarizes the activity for noncontrolling interests for the three months ended March 31, 2019 and the year ended December 31, 2018 : Three Months Ended March 31, 2019 Year Ended December 31, 2018 Beginning balance $ 1,182 $ 76 Issuance of limited partnership units (1) 3,904 1,185 Distributions to noncontrolling interests (47 ) (70 ) Net loss allocation (7 ) (6 ) Other comprehensive loss — (3 ) Ending balance $ 5,032 $ 1,182 (1) Issuance of limited partnership units were made to affiliates. See Note 9, Related Party Transactions , for further details.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Summarized below are the related party costs incurred by the Company for the three months ended March 31, 2019 , and 2018 , respectively, and amounts payable as of March 31, 2019 and December 31, 2018 : Incurred for the Three Months Ended March 31, Payable as of March 31, Payable as of December 31, 2019 2018 2019 2018 Expensed Corporate operating expenses $ 829 $ 678 $ 892 $ 63 Other operating expenses (1) — — 215 215 Property management fees 481 459 165 157 Performance distribution allocation 1,920 2,061 1,920 7,807 Advisory fees 2,339 2,301 — 781 Capitalized/Offering Organization and offering expense 3 240 1,316 (5) 1,312 Other costs advanced by the Advisor 228 71 374 367 Selling commissions (2) — 11 — — Dealer Manager fees — 45 — — Stockholder servicing fee (3) — 82 7,252 8,302 Distribution fees 5 — — — Advisor advances: (4) Organization and offering — 18 34 44 Dealer Manager fees — — — — Total $ 5,805 $ 5,966 $ 12,168 $ 19,048 (1) Other operating expenses include costs incurred by the Company's former sponsor, GCC, related to acquisition transactions that failed to close. (2) On September 18, 2017, the Company and the Dealer Manager entered into a dealer manager agreement for the Follow-On Offering. See the " Dealer Manager Agreement " section below for details regarding selling commissions and dealer manager fees. (3) The Dealer Manager continues to receive a stockholder servicing fee with respect to Class AA shares as detailed in the Company's IPO prospectus. The stockholder servicing fee is paid quarterly and accrues daily in an amount equal to 1/365th of 1.0% of the NAV per share of the Class AA shares, up to an aggregate of 4% of the gross proceeds of Class AA shares sold. The Company will cease paying the stockholder servicing fee with respect to the Class AA shares at the earlier of (i) the date at which the aggregate underwriting compensation from all sources equals 10% of the gross proceeds from the sale of shares in the Company's IPO (excluding proceeds from sales pursuant to the related DRP); (ii) the fourth anniversary of the last day of the fiscal quarter in which the Company's IPO terminated; (iii) the date that such Class AA share is redeemed or is no longer outstanding; and (iv) the occurrence of a merger, listing on a national securities exchange, or an extraordinary transaction. (4) Pursuant to the original advisory agreement, commencing November 2, 2015, the Company remained obligated to reimburse the Advisor for organizational and offering costs incurred after such date. Terms of the organizational and offering costs are included in the Company's 2016 Annual Report on Form 10-K filed on March 15, 2017. (5) Excludes amounts in excess of the 15% organization and offering costs limitation, which includes a receivable of approximately $1.3 million from the Company's Advisor and is included in "Due from Affiliates" on the consolidated balance sheet. See Note 7, Equity , for additional details. On September 20, 2017, an affiliated entity of the Company purchased 264 Class T shares, 264 Class S shares, 264 Class D shares, and 263,200 Class I shares in the Follow-On Offering for $2.5 million . As of March 31, 2019 the total outstanding shares owned by affiliates (including DRP) was 280 Class T shares, 280 Class S shares, 283 Class D shares, 283,016 Class I shares, and 287,449 Class A shares. Advisory Agreement In connection with the Follow-On Offering, on September 20, 2017, the Company entered into the Advisory Agreement with the Advisor and the Operating Partnership. The Advisory Agreement is substantially similar to the original advisory agreement, except that the Company will not pay the Advisor any acquisition, financing or other similar fees from proceeds raised in the Follow-On Offering in connection with making investments and will instead pay the Advisor an advisory fee that will be payable in arrears on a monthly basis and accrues daily in an amount equal to 1/365th of 1.25% of the NAV for each class of common stock for each day. As a result of the Mergers, the Company no longer has an external advisor. See Note 12, Subsequent Events , for additional details. Performance Distribution So long as the Advisory Agreement has not been terminated (including by means of non-renewal), the Advisor will hold a special limited partnership interest in the Operating Partnership that entitles it to receive a distribution from the Operating Partnership equal to 12.5% of the total return, subject to a 5.5% hurdle amount and a high water mark, with a catch-up (terms of the performance distribution allocation are included in the Company's 2017 Annual Report on Form 10-K filed on March 9, 2018). Such distribution will be made annually and accrue daily. In February 2019, the Company paid in cash approximately $3.9 million and issued approximately $3.9 million in Class I limited partnership units to the Advisor. The Advisor elected to receive 50% in cash and the remaining in Class I limited partnership units. As a result of the Mergers, the special limited partnership interest that entitled the Operating Partnership to the performance distribution was automatically redeemed, canceled and retired. See Note 12, Subsequent Events, for additional details. Operating Expenses The Advisor and its affiliates are entitled to reimbursement for certain expenses incurred on behalf of the Company in connection with providing administrative services, including related personnel costs; provided, however, the Advisor must reimburse the Company for the amount, if any, by which total operating expenses (as defined), including advisory fees, paid during the previous 12 months then ended exceeded the greater of: (i) 2% of the Company’s average invested assets for that 12 months then ended; or (ii) 25% of the Company’s net income, before any additions to reserves for depreciation, bad debts or other expenses connected with the acquisition and disposition of real estate interests and before any gain from the sale of the Company’s assets, for that fiscal year, unless the Board has determined that such excess expenses were justified based on unusual and non-recurring factors. The Advisor may waive or defer all or a portion of these reimbursements or elect to receive Class I shares or Class I units of the Operating Partnership in lieu of these reimbursements at any time and from time to time, in its sole discretion. For the three months ended March 31, 2019 and 2018 , the Company’s total operating expenses did not exceed the 2%/25% guideline. The Company reimbursed the Advisor and its affiliates a portion of the compensation paid by the Advisor and its affiliates for the Company's principal financial officer, Javier F. Bitar, executive vice president, David C. Rupert, and vice president and secretary, Howard S. Hirsch in the amount of approximately $0.23 million and $0.15 million , which is partially included in offering costs with the remaining amount included in corporate operating expenses to affiliates for the three months ended March 31, 2019 and 2018 , respectively, for services provided to the Company, for which the Company does not pay the Advisor a fee. In addition, the Company incurred approximately $0.05 million and $0.01 million in reimbursable expenses to the Advisor for services provided to the Company by certain of its other executive officers for each of the three months ended March 31, 2019 and 2018 , respectively. The reimbursable expenses include components of salaries, bonuses, benefits and other overhead charges and are based on the percentage of time each executive officer spends on the Company's affairs. Dealer Manager Agreement The Company entered into a dealer manager agreement and associated form of participating dealer agreement (the "Dealer Manager Agreement") with the Dealer Manager. The terms of the Dealer Manager Agreement are substantially similar to the terms of the dealer manager agreement from the Company's IPO, except as it relates to the share classes offered and the fees to be received by the Dealer Manager (terms of the Dealer Manager Agreement are included in the Company's 2018 Annual Report on Form 10-K filed on March 14, 2019). Distribution Fees Subject to Financial Industry Regulatory Authority, Inc.'s limitations on underwriting compensation, under the Dealer Manager Agreement the Company will pay the Dealer Manager a distribution fee for ongoing services rendered to stockholders by participating broker-dealers or broker-dealers servicing investors’ accounts, referred to as servicing broker-dealers. The fee accrues daily and is paid monthly in arrears and is calculated based on the average daily NAV for the applicable month (the “Average NAV”) (terms of the distribution fees are included in the Company's 2018 Annual Report on Form 10-K filed on March 14, 2019). Property Management Agreement In the event that the Company contracts directly with non-affiliated third party property managers with respect to its individual properties, the Company pays the Property Manager an oversight fee equal to 1.0% of the gross revenues of the property managed, plus reimbursable costs as applicable (terms of the property management agreement are included in the Company's 2018 Annual Report on Form 10-K filed on March 14, 2019). As a result of the Mergers, these fees are now eliminated in consolidation. See Note 12, Subsequent Events , for additional details. Conflicts of Interest The Sponsor, Advisor, Property Manager and their officers and certain of their key personnel and their respective affiliates currently serve as key personnel, advisors and managers to GCEAR. Certain of the Company's officers are also officers to some or all of 12 other programs affiliated with the Company's former sponsor, including, Griffin-American Healthcare REIT III, Inc. ("GAHR III"), Phillips Edison Grocery Center REIT III, Inc. ("PECO III"), and Griffin-American Healthcare REIT IV, Inc. ("GAHR IV"), all of which are publicly-registered, non-traded real estate investment trusts, and Griffin Institutional Access Real Estate Fund ("GIA Real Estate Fund") and Griffin Institutional Access Credit Fund ("GIA Credit Fund"), both of which are non-diversified, closed-end management investment companies that are operated as interval funds under the Investment Company Act of 1940, as amended (the "1940 Act"). Because these persons have competing demands on their time and resources, they may have conflicts of interest in allocating their time between the Company’s business and these other activities. Some of the material conflicts that the Advisor or its affiliates will face are: (1) competing demand for time of the Advisor’s executive officers and other key personnel from the Sponsor and other affiliated entities; (2) determining if certain investment opportunities should be recommended to the Company or GCEAR; and (3) influence of the fee structure under the Advisory Agreement and distribution structure of the operating partnership agreement that could result in actions not necessarily in the long-term best interest of the Company's stockholders. The Board has adopted the Sponsor’s acquisition allocation policy as to the allocation of acquisition opportunities among GCEAR and the Company, which is as follows: The Sponsor will allocate potential investment opportunities to the Company and GCEAR based on the following factors: • the investment objectives of each program; • the amount of funds available to each program; • the financial impact of the acquisition on each program, including each program’s earnings and distribution ratios; • various strategic considerations that may impact the value of the investment to each program; • the effect of the acquisition on concentration/diversification of each program’s investments; and • the income tax effects of the investment on each program. In the event all acquisition allocation factors have been exhausted and an investment opportunity remains equally suitable for the Company and GCEAR, the Sponsor will offer the investment opportunity to the REIT that has had the longest period of time elapse since it was offered an investment opportunity. As a result of the Mergers, most of the conflict of interests described above are no longer applicable. In addition, the operating partnership agreement was amended and restated. See Note 12, Subsequent Events , for additional details. Economic Dependency The Company will be dependent on the Advisor and the Dealer Manager for certain services that are essential to the Company, including the sale of the Company's shares of common stock available for issue, the identification, evaluation, negotiation, purchase and disposition of properties and other investments, management of the daily operations of the Company’s real estate portfolio, and other general and administrative responsibilities. In the event that these companies are unable to provide the respective services, the Company will be required to obtain such services from other resources. As a result of the Mergers, the Company is no longer dependent on the Advisor. See Note 12, Subsequent Events , for additional details.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation From time to time, the Company may become subject to legal proceedings, claims and litigation arising in the ordinary course of business. The Company is not a party to any material legal proceedings, nor is the Company aware of any pending or threatened litigation that would have a material adverse effect on the Company’s business, operating results, cash flows or financial condition should such litigation be resolved unfavorably.

Declaration of Distributions

Declaration of Distributions	3 Months Ended
	Mar. 31, 2019
Declaration of Distributions [Abstract]
Declaration of Distributions	Declaration of Distributions During the quarter ended March 31, 2019 , the Company paid cash distributions in the amount of $0.0015068493 per day, before adjustments for class-specific expenses, per Class T share, Class S share, Class D share, Class I share, Class A share, Class AA share, and Class AAA share on the outstanding shares of common stock payable to stockholders of record at the close of business on each day during the period from January 1, 2019 through March 31, 2019. Such distributions payable to each stockholder of record were paid on such date after the end of each month during the period as determined by the Company's Chief Executive Officer. On March 13, 2019 , the Board declared cash distributions in the amount of $0.0015068493 per day, subject to adjustments for class-specific expenses, per Class T share, Class S share, Class D share, Class I share, Class A share, Class AA share, and Class AAA share on the outstanding shares of common stock payable to stockholders of record at the close of business on each day during the period beginning on April 1, 2019 and ending on the earlier of (a) June 30, 2019 or (b) the date of the closing of the Mergers. Such distributions payable to each stockholder of record will be paid on such date after the end of each month during the period as determined by the Company's Chief Executive Officer.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Status of the Offering As of May 13, 2019 , the Company had issued 7,396,052 and and 1,030,404 shares of the Company’s common stock pursuant to the DRP and Follow-On Offering, respectively, for approximately $70.3 million and $10.0 million , respectively. Declaration of Distributions Effective April 30, 2019, the Board declared a cash distribution in the amount of $0.00150684932 per day, subject to adjustments for class-specific expenses, per Class E share, Class T share, Class S share, Class D share, Class I share, Class A share, Class AA share and Class AAA share of common stock payable to stockholders of record at the close of business on each day during the period commencing on May 1, 2019 and ending on June 30, 2019. The Board also declared a stock distribution in the amount of $0.000273973 worth of shares of the applicable class per day, per Class E share, Class T share, Class S share, Class D share, Class I share, Class A share, Class AA share and Class AAA share of common stock payable to stockholders of record at the close of business on each day during the period commencing on May 1, 2019 and ending on June 30, 2019. Such distributions payable to each stockholder of record during a month will be paid on such date of the following month as the Company's Chief Executive Officer may determine. Mergers On April 30, 2019, pursuant to the Merger Agreement, (i) GCEAR merged with and into Merger Sub, with Merger Sub surviving as a direct, wholly-owned subsidiary of the Company and (ii) the Operating Partnership merged with and into the GCEAR Operating Partnership, with the GCEAR Operating Partnership surviving the Partnership Merger. At such time, (i) in accordance with the applicable provisions of the Maryland General Corporation Law and the Maryland Limited Liability Company Act, the separate existence of GCEAR ceased and (ii) in accordance with the Delaware Revised Uniform Limited Partnership Act, the separate existence of the Operating Partnership ceased. In addition, on April 30, 2018, following the Partnership Merger, Merger Sub merged into the Company. At the effective time of the Company Merger, each issued and outstanding share of GCEAR’s common stock (or fraction thereof), $0.001 par value per share (the “GCEAR Common Stock”), converted into the right to receive 1.04807 shares of the Company's Class E common stock, $0.001 par value per share (the “Class E Common Stock”), and each issued and outstanding share of GCEAR’s Series A cumulative perpetual convertible preferred stock converted into the right to receive one share of the Company's Series A cumulative perpetual convertible preferred stock. Stockholders of GCEAR who were enrolled in GCEAR's distribution reinvestment plan are automatically enrolled in the Company's DRP, unless such stockholder requests of the Company to not be enrolled in the Company's DRP. At the effective time of the Partnership Merger, each GCEAR Operating Partnership unit outstanding immediately prior to the effective time of the Partnership Merger converted into the right to receive 1.04807 Class E operating units in the surviving partnership and each Operating Partnership unit outstanding immediately prior to the effective time of the Partnership Merger converted into the right to receive one operating unit of like class in the surviving partnership. The special limited partnership interest of the Operating Partnership was automatically redeemed, canceled and retired as described in the Merger Agreement. As of April 30, 2019, the Company owned 124 buildings located on 101 properties in 25 states, encompassing approximately 27.2 million rentable square feet, with a weighted average remaining lease term of 7.48 years . Fifth Amended and Restated Limited Partnership Agreement of the GCEAR Operating Partnership On April 30, 2019, in connection with the Partnership Merger, the Company entered into a Fifth Amended and Restated Limited Partnership Agreement of Griffin Capital Essential Asset Operating Partnership, L.P. (the "Operating Partnership Agreement"), which amends and supersedes the Fourth Amended and Restated Limited Partnership Agreement. The Operating Partnership Agreement reflects, among other things, the change of the general partner of the GCEAR Operating Partnership to the Company, the exchange of classes of units of limited partnership interest pursuant to the Partnership Merger, the authorization of additional classes of units of limited partnership interest of the Operating Partnership that were outstanding prior to the Mergers and were issued in connection with the Mergers, and to make other updates to reflect the effects of the Mergers. Terms of the Operating Partnership Agreement are included in the Company's Form 8-K filed on May 1, 2019. Advisory and Property Management Fees Prior to the execution of the Merger Agreement, the Company's Advisor and Property Manager provided services to the Company, including asset acquisition and disposition decisions, asset management, operating and leasing of properties, property management, and other general and administrative responsibilities. Subsequent to the Company Merger, advisory or property management fees paid by the Company are intercompany transactions and will be eliminated in consolidation. Second Amended and Restated Credit Agreement On April 30, 2019, the Company, through the GCEAR Operating Partnership (the “KeyBank Borrower”), entered into that certain second amended and restated credit agreement (the "Second Amended and Restated Credit Agreement") related to a revolving credit facility and three term loans described below (the "Term Loans" and collectively with the revolving credit facility, the "KeyBank Loans") with a syndicate of lenders, under which KeyBank serves as administrative agent, and various notes related thereto. In addition, the Company entered into a guaranty agreement. The Second Amended and Restated Credit Agreement, the various notes, the guaranty agreement, and the various other related documents are collectively referred to herein as the "KeyBank Loan Documents." Pursuant to the Second Amended and Restated Credit Agreement, the Company was provided with a revolving credit facility (the "Revolving Credit Facility") in an initial commitment amount of $750 million (the "Revolving Commitment"), an existing five -year term loan (the "2023 Term Loan") in an initial commitment amount of $200 million (the "2023 Term Commitment"), a new five -year term loan (the "2024 Term Loan") in an initial commitment amount of $400 million (the "2024 Term Commitment"), and a new seven -year term loan (the "2026 Term Loan") in an initial commitment amount of $150 million (the "2026 Term Commitment"), which commitments may be increased under certain circumstances up to a maximum total commitment of $2.0 billion . Any increase in the total commitment will be allocated to the Revolving Credit Facility and/or the Term Loans in such amounts as the KeyBank Borrower and KeyBank may determine. The KeyBank Loans are evidenced by promissory notes that are substantially similar related to each lender and the amount committed by such lender. Increases in the commitment amount must be made in amounts of not less than $25 million , and increases of $25 million in increments in excess thereof, provided that such increases do not exceed the maximum total commitment amount of $2.0 billion . The KeyBank Borrower may also reduce the amount of the Revolving Commitment in increments of $50 million , provided that at no time will the Revolving Credit Facility be less than $150 million , and such a reduction will preclude the KeyBank Borrower's ability to later increase the commitment amount. The Revolving Credit Facility may be prepaid and terminated, in whole or in part, at any time without fees or penalty. The Revolving Credit Facility also provides for same day swingline advances to be provided by KeyBank, Bank of America, N.A., and Wells Fargo Bank, N.A., on a pro rata basis, up to $125 million in the aggregate. Such swingline advances will reduce dollar for dollar the availability under the Revolving Credit Facility, and must be repaid within 10 business days. The Revolving Credit Facility has an initial term of approximately three years , maturing on June 28, 2022. The Revolving Credit Facility may be extended for a one -year period if certain conditions are met and the KeyBank Borrower pays an extension fee. Payments under the Revolving Credit Facility are interest only and are due on the first day of each quarter. Amounts borrowed under the Revolving Credit Facility may be repaid and reborrowed, subject to the terms of the Second Amended and Restated Credit Agreement. The 2023 Term Loan has an initial term of approximately five years , maturing on June 28, 2023. Payments under the 2023 Term Loan are interest only and are due on the first day of each quarter. Amounts borrowed under the 2023 Term Loan may not be repaid and reborrowed. The 2024 Term Loan has an initial term of five years , maturing on April 30, 2024. Payments under the 2024 Term Loan are interest only and are due on the first day of each quarter. Amounts borrowed under the 2024 Term Loan may not be repaid and reborrowed. The 2026 Term Loan has an initial term of seven years , maturing on April 30, 2026. Payments under the 2026 Term Loan are interest only and are due on the first day of each quarter. Amounts borrowed under the 2026 Term Loan may not be repaid and reborrowed. The KeyBank Loans have an interest rate calculated based on LIBOR plus the applicable LIBOR margin, as provided in the Second Amended and Restated Credit Agreement, or the Base Rate plus the applicable base rate margin, as provided in the agreement. The applicable LIBOR margin and base rate margin are dependent on the consolidated leverage ratio of the KeyBank Borrower, the Company, and the Company's subsidiaries, as disclosed in the periodic compliance certificate provided to our administrative agent each quarter. If the KeyBank Borrower obtains an investment grade rating of its senior unsecured long term debt from Standard & Poor's Rating Services, Moody's Investors Service, Inc., or Fitch, Inc., the applicable LIBOR margin and base rate margin will be dependent on such rating. The Second Amended and Restated Credit Agreement relating to the Revolving Credit Facility provides that the Borrower must maintain a pool of unencumbered real properties (each a "Pool Property" and collectively the "Pool Properties") that meet certain requirements contained in the Second Amended and Restated Credit Agreement. The agreement sets forth certain covenants relating to the Pool Properties, including, without limitation, the following: • there must be no less than 15 Pool Properties at any time; • no greater than 15% of the aggregate pool value may be contributed by a single Pool Property or tenant; • no greater than 15% of the aggregate pool value may be contributed by Pool Properties subject to ground leases; • no greater than 20% of the aggregate pool value may be contributed by Pool Properties which are under development or assets under renovation; • the minimum aggregate leasing percentage of all Pool Properties must be no less than 90% ; and • other limitations as determined by KeyBank upon further due diligence of the Pool Properties. Borrowing availability under the Second Amended and Restated Credit Agreement is limited to the lesser of (i) an unsecured leverage ratio of no greater than 60% , or (ii) an unsecured interest coverage ratio of no less than 2.00 :1.00. In connection with the KeyBank Loans, the KeyBank Borrower paid closing costs, including arrangement fees, commitment fees and legal fees, of approximately $5.7 million . The KeyBank Borrower will pay KeyBank an administrative agent fee of $25,000 per year. In addition, an unused fee will be payable quarterly which is calculated based on the amount of the unused revolving loan commitments and is equal to 15 basis points if 50% or more of the loan commitments are used or 20 basis points if less than 50% of the loan commitments are used. At the time that the applicable LIBOR margin and base rate margin are determined in accordance with the Borrower's investment grade rating as provided above, the KeyBank Borrower will pay a quarterly facility fee at a rate that is dependent on such rating and is based upon the total commitments. In the event that any of the 2023 Term Commitment is not advanced on April 30, 2019 (including the amount of any 2023 Term Loans previously advanced under the existing credit agreement), such unadvanced amount will incur an unused fee equal to 0.25% annually multiplied by the average daily amount of the unadvanced portion of the 2023 Term Commitment. Such unused fee will be payable quarterly in arrears and will start accruing on April 30, 2019 and will stop accruing on the first to occur of (a) the date the 2023 Term Commitments are fully advanced, or (b) July 30, 2019. Guarantors of the KeyBank Loans include us, each special purpose entity that owns a Pool Property, and each of our other subsidiaries which owns a direct or indirect equity interest in a special purpose entity that owns a Pool Property. In addition to customary representations, warranties, covenants, and indemnities, the KeyBank Loans require us to comply with the following at all times, which will be tested on a quarterly basis: • a maximum consolidated leverage ratio of 60% , or, the ratio may increase to 65% for up to four consecutive quarters after a material acquisition; • a minimum consolidated tangible net worth of 75% of our consolidated tangible net worth at closing of the Revolving Credit Facility, or approximately $2.0 billion , plus 75% of net future equity issuances (including units of operating partnership interests in the KeyBank Borrower), minus 75% of the amount of any payments used to redeem our stock or the KeyBank Borrower's stock or our operating partnership units, minus any amounts paid for the redemption or retirement of or any accrued return on the preferred equity issued under the preferred equity investment made in GCEAR in August 2018 by SHBNPP Global Professional Investment Type Private Real Estate Trust No. 13 (H) (the "2018 Preferred Equity"); • upon consummation, if ever, of an initial public offering, a minimum consolidated tangible net worth of 75% of our consolidated tangible net worth plus 75% of net future equity issuances (including units of operating partnership interests in the KeyBank Borrower) should we publicly list on the New York Stock Exchange; • a minimum consolidated fixed charge coverage ratio of not less than 1.50 :1.00; • a maximum total secured debt ratio of not greater than 40% , which ratio will increase by five percentage points for four quarters after closing of a material acquisition that is financed with secured debt; • a minimum unsecured interest coverage ratio of 2.00 :1.00; • a maximum total secured recourse debt ratio, excluding recourse obligations associated with interest rate hedges, of 10% of our total asset value; • aggregate maximum unhedged variable rate debt of not greater than 30% of our total asset value; and • a maximum payout ratio of not greater than 95% commencing for the quarter ended September 30, 2019. Furthermore, the activities of the KeyBank Borrower, the Company, and the Company's subsidiaries must be focused principally on the acquisition, operation, and maintenance of income producing office and industrial real estate properties. The Second Amended and Restated Credit Agreement contains certain restrictions with respect to the investment activities of the KeyBank Borrower, including, without limitation, the following: (i) unimproved land may not exceed 5% of total asset value; (ii) developments that are pre-leased assets under development may not exceed 20% of total asset value; (iii) investments in unconsolidated affiliates may not exceed 10% of total asset value; (iv) investments in mortgage notes receivable may not exceed 15% of total asset value; and (v) leased assets under renovation may not exceed 10% of total asset value. These investment limitations cannot exceed 25% in the aggregate, based on total asset value, as defined in the Second Amended and Restated Credit Agreement. Perpetual Convertible Preferred Shares On April 29, 2019, the Company filed with the State Department of Assessments and Taxation of Maryland Articles Supplementary (“Articles Supplementary”) to its First Articles of Amendment and Restatement (as amended or supplemented, the "Charter") designating 10,000,000 authorized but unissued shares of preferred stock as the Series A Preferred Shares (defined below). In connection with the Company Merger, on April 30, 2019, the Company issued 5,000,000 shares of its Series A cumulative perpetual convertible preferred stock (the “Series A Preferred Shares”) to holders of GCEAR’s Series A cumulative perpetual convertible preferred stock. Holders of Series A Preferred Shares are entitled to receive distributions quarterly in arrears at an initial annual distribution rate of 6.55% . Holders of Series A Preferred Shares have the right to redeem or convert their shares if certain conditions are not met, as set forth in the applicable Articles Supplementary. The shares of the Company's common stock issuable upon conversion of the Series A Preferred Shares have not been registered under the securities act and may not be offered or sold in the United States in the absence of an effective registration statement or an applicable exemption from the registration requirements. Company Offer On May 6, 2019, the Company commenced a self-tender offer (the “Company Offer”) for up to $100 million in shares of the Company’s Class A, Class AA, Class AAA, Class T, Class D, Class S, Class I and Class E shares, collectively, par value $0.001 per share, for cash at a purchase price equal to $9.56 per Class A, Class AA or Class AAA share, $9.66 per Class T share, $9.64 per Class D share, $9.65 per Class S share, $9.64 per Class I share, and $9.56 per Class E share. The Company Offer expires on Monday, June 10, 2019, unless extended or withdrawn per the terms of the Company Offer. Employment Agreements With Officers In connection with the Mergers and Michael J. Escalante's appointment as Chief Executive Officer of the Company, the Company assumed, from GCEAR, an employment agreement dated December 14, 2018, for Mr. Escalante to serve as GCEAR's Chief Executive Officer and President (the “Escalante Employment Agreement”). The Company assumed GCEAR's obligations under the Escalante Employment Agreement in its entirety. The Escalante Employment Agreement has an initial term of five years and will automatically renew for additional one year periods thereafter, unless either the Company or Mr. Escalante provide advance written notice of its or his intent not to renew or unless sooner terminated in accordance with the terms thereof. The Company also assumed employment agreements entered into by GCEAR with each of Javier F. Bitar, Howard S. Hirsch, Louis K. Sohn and Scott Tausk. Each of such employment agreements (collectively, the “Employment Agreements”) was entered into on December 14, 2018 and is substantially similar to the material terms of the Escalante Employment Agreement. Terms of the Escalante Employment Agreement and Employment Agreements are included in the Company's Form 8-K filed on May 1, 2019. Issuance of Restricted Stock Units to Executive Officers Pursuant to the terms of the Escalante Employment Agreement and the other Employment Agreements, on May 1, 2019, the Company entered into Time-Based Restricted Stock Unit Agreements with each of Messrs. Escalante, Bitar, Hirsch, Sohn and Tausk for the issuance of each of their respective Initial Equity Awards (collectively, the "Restricted Stock Unit Award Agreements"), pursuant to which the Company issued restricted stock units to such executive officers under the Employee and Director Long-Term Incentive Plan in the following amounts (the "RSUs"): 732,218 RSUs to Mr. Escalante; 104,603 RSUs to Mr. Bitar; 67,992 RSUs to Mr. Hirsch; 52,301 RSUs to Mr. Sohn; and 52,301 RSUs to Mr. Tausk.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited consolidated financial statements of the Company are prepared by management on the accrual basis of accounting and in accordance with generally accepted accounting principles in the United States (“GAAP”) for interim financial information as contained in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”), and in conjunction with rules and regulations of the SEC. Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the unaudited consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The unaudited consolidated financial statements include accounts and related adjustments, which are, in the opinion of management, of a normal recurring nature and necessary for a fair presentation of the Company’s financial position, results of operations and cash flows for the interim period. Operating results for the three months ended March 31, 2019 are not necessarily indicative of the results that may be expected for the year ended December 31, 2019 . These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018 .
Consolidation	The consolidated financial statements of the Company include all accounts of the Company, the Operating Partnership, and its subsidiaries. Intercompany transactions are not shown on the consolidated statements. However, each property-owning entity is a wholly-owned subsidiary which is a special purpose entity ("SPE"), whose assets and credit are not available to satisfy the debts or obligations of any other entity, except to the extent required with respect to any co-borrower or guarantor under the same credit facility.
Use of Estimates	Use of Estimates The preparation of the unaudited consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the unaudited consolidated financial statements and accompanying notes. Actual results could materially differ from those estimates.
Per Share Data	Per Share Data The Company reports earnings per share for the period as (1) basic earnings per share computed by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding during the period, and (2) diluted earnings per share computed by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding, including common stock equivalents. As of March 31, 2019 and December 31, 2018 , common stock equivalents included in dilutive earnings (loss) per share would have been anti-dilutive for common stockholders.
Segment Information	Segment Information ASC Topic 280, Segment Reporting , establishes standards for reporting financial and descriptive information about a public entity’s reportable segments. The Company evaluates all of the properties and interests therein as one reportable segment.
Reclassification of the prior year presentation of rental income and property expense recovery	Reclassification of the prior year presentation of rental income and property expense recovery As described below, rental income and property expense recovery related to the Company's operating leases for which the Company is the lessor qualified for the single component practical expedient and was classified as rental income in the Company's consolidated statements of operations. Prior to the adoption of the new lease accounting standard, the Company classified rental income and property expense recovery separately in the Company's consolidated statements of operations, in accordance with the guidance in effect prior to January 1, 2019. Upon adoption of the new lease accounting standard, the Company comparative statement of operations of prior year have been reclassified to conform to the new single component presentation of rental income and property expense recovery, classified within rental income in the Company's consolidated statements of operations.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-02, Leases ("ASU No. 2016-02"). ASU No. 2016-02 amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU No. 2016-02 will direct how the Company accounts for payments from the elements of leases that are generally fixed and determinable at the inception of the lease (“Fixed Lease Payments”) while ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU No. 2014-09") will direct how the Company accounts for the non-lease components of lease contracts, primarily expense reimbursements (“Non-Lease Payments”) and the accounting for the disposition of real estate facilities. ASU No. 2016-02 was effective beginning in the first quarter of 2019. Early adoption of ASU No. 2016-02 as of its issuance is permitted. ASU No. 2016-02 requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. Based on the required adoption date of January 1, 2019, the modified retrospective method for ASU No. 2016-02 requires application of the standard to all leases that exist at, or commence after, January 1, 2017 (beginning of the earliest comparative period presented in the 2019 financial statements), with a cumulative adjustment to the opening balance of accumulated earnings (deficit) on January 1, 2017, for the effect of applying the standard at the date of initial application, and restatement of the amounts presented prior to January 1, 2019. The FASB has also issued an amendment to the standard that would provide an entity an optional transition method to initially account for the impact of the adoption of the standard with a cumulative adjustment to accumulated earnings (deficit) on January 1, 2019 (the effective date of ASU No. 2016-02), rather than January 1, 2017, which would eliminate the need to restate amounts presented prior to January 1, 2019. Under ASU No. 2016-02, an entity may elect a practical expedient package, which states that: (1) an entity need not reassess whether any expired or existing contracts are leases or contain leases; (2) an entity need not reassess the lease classification for any expired or existing leases; and (3) an entity need not reassess initial direct costs for any existing leases. These three practical expedients are available as a single election that must be elected as a package and must be consistently applied to all existing leases at the date of adoption. The Company elected to adopt the three practical expedients as a single election effective January 1, 2019. In July 2018, the FASB approved an amendment to the ASU to allow lessors to elect, as a practical expedient, not to allocate the total consideration to lease and non-lease components based on their relative standalone selling prices. The single-lease component practical expedient allows lessors to elect a combined single-lease component presentation if (1) the timing and pattern of transfer of the lease component and the non-lease component(s) associated with it are the same, and (2) the lease component would be classified as an operating lease if it were accounted for separately. Non-lease components that do not meet the criteria of this practical expedient and combined components in which the non-lease component is the predominant component will be accounted for under the new revenue recognition ASU. ASU No. 2016-02 had no impact on the Company's accounting for Fixed Lease Payments because the Company's accounting policy is consistent with the provisions of the standard. The Company elected to adopt the practical expedient mentioned above, which treats payments for expense reimbursements that qualify as Non-Lease Payments and meet the criteria above as single lease components. Under ASU No. 2016-02, reimbursements relating to property taxes and insurances are Fixed Lease Payments as the payments relate to the right to use the leased assets, while reimbursements relating to maintenance activities and common area expense are Non-Lease Payments and are accounted under ASU No. 2016-02, assuming the Non-Lease Payments meet the criteria above. Additionally, the Company analyzed its current lease obligations under ASU No. 2016-02 where the Company is the lessee. Since there are no leases where the Company is the lessee, there was no impact on the consolidated financial statements as of March 31, 2019.

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2019
Accounting Policies [Abstract]
Reconciliation of Prior Period Presentation of Statement of Operations Line Items	The table below provides a reconciliation of the prior period presentation of the statement of operations line items that were reclassified in the Company's consolidated statement of operations to conform to the current period presentation, pursuant to the adoption of the new lease accounting standard and election of the single component practical expedient (in thousands): Three Months Ended March 31, 2018 Rental income (presentation prior to January 1, 2019) $ 22,010 Property expense recovery (presentation prior to January 1, 2019) 4,779 Rental income (presentation effective January 1, 2019) $ 26,789

Real Estate (Tables)

Real Estate (Tables)	3 Months Ended
	Mar. 31, 2019
Real Estate [Abstract]
Schedule of future minimum contractual rent payments	The future minimum contractual rent payments pursuant to the current lease terms are shown in the table below. The Company's current leases have expirations ranging from 2021 to 2044. As of March 31, 2019 Remaining 2019 $ 59,269 2020 80,495 2021 72,680 2022 73,541 2023 71,311 Thereafter 457,574 Total $ 814,870
Schedule of allocated real estate asset value	March 31, 2019 December 31, 2018 In-place lease valuation (above market) $ 4,046 $ 4,046 In-place lease valuation (above market), accumulated amortization (1,215 ) (1,123 ) Intangible assets, net $ 2,831 $ 2,923 In-place lease valuation (below market) $ (62,070 ) $ (62,070 ) In-place lease valuation (below market) - accumulated amortization 17,091 15,841 In-place lease valuation (below market), net $ (44,979 ) $ (46,229 ) Tenant origination and absorption cost $ 240,364 $ 240,364 Tenant origination and absorption cost - accumulated amortization (77,331 ) (71,364 ) Tenant origination and absorption cost, net $ 163,033 $ 169,000
Schedule of estimated annual amortization (income) expense	The following table sets forth the estimated annual amortization (income) expense for in-place lease valuation and tenant origination and absorption costs as of March 31, 2019 for the next five years : Year In-Place Lease Valuation Tenant Origination and Absorption Costs Remaining 2019 $ (3,537 ) $ 18,232 2020 $ (4,695 ) $ 24,198 2021 $ (3,799 ) $ 19,715 2022 $ (3,774 ) $ 19,256 2023 $ (2,901 ) $ 16,502

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Schedule of debt	As of March 31, 2019 and December 31, 2018 , the Company's debt and related deferred financing costs consisted of the following: March 31, 2019 December 31, 2018 Contractual Interest Rate (1) Payment Type Loan Maturity Effective Interest Rate (2) BofA/KeyBank Loan $ 250,000 $ 250,000 4.32% Interest Only May 2028 4.42% AIG Loan 126,970 126,970 4.15% Interest Only (3) November 2025 4.22% Total Mortgage Debt 376,970 376,970 Term Loan 123,000 113,000 LIBOR + 1.25% (4) Interest Only June 2023 3.81% Revolving credit facility 85 85 LIBOR + 1.30% (4) Interest Only June 2023 (5) 4.04% Total Debt 500,055 490,055 Unamortized deferred financing costs (7,706 ) (8,100 ) Total Debt, net $ 492,349 $ 481,955 (1) The weighted average interest rate as of March 31, 2019 was approximately 4.18% for the Company's fixed-rate and variable-rate debt combined. (2) Includes the effect of amortization of deferred financing costs. (3) The AIG Loan (as defined below) requires monthly payments of interest only, at a fixed rate, for the first five years and fixed monthly payments of principal and interest thereafter. (4) The London Interbank Offered Rate ("LIBOR") as of March 31, 2019 was 2.50% . (5) The revolving credit facility has an initial term of four years, maturing on June 28, 2022, and may be extended for a one -year period if certain conditions are met and upon payment of an extension fee. See discussion below.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair value of assets and liabilities measured on recurring basis	March 31, 2019 December 31, 2018 Fair Value Carrying Value (1) Fair Value Carrying Value (1) AIG Loan $ 120,805 $ 126,970 $ 120,599 $ 126,970 BofA/KeyBank Loan 256,299 250,000 249,566 250,000 (1) The carrying value of the AIG and BofA/KeyBank Loan Loans do not include deferred financing costs as of March 31, 2019 and December 31, 2018 . See Note 4, Debt , for details.

Accrued Expenses and Other Li_2

Accrued Expenses and Other Liabilities (Tables)	3 Months Ended
	Mar. 31, 2019
Payables and Accruals [Abstract]
Schedule of accrued expenses and other liabilities	Accrued expenses and other liabilities consisted of the following as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 Prepaid rent $ 4,305 $ 4,709 Accrued property taxes 2,446 2,955 Interest expense payable 2,878 2,805 Other liabilities 3,332 10,554 Total $ 12,961 $ 21,023

Equity (Tables)

Equity (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Schedule of shares issued and gross proceeds for each class	The following table summarizes shares issued and gross proceeds received for each share class as of March 31, 2019 and outstanding shares as of March 31, 2019 and December 31, 2018 : Class T S D I A AA AAA Total Gross proceeds from primary portion of offerings $ 2,245 $ 3 $ 182 $ 7,538 $ 240,780 $ 474,858 $ 8,381 $ 733,987 Gross proceeds from DRP $ 33 $ — $ 4 $ 215 $ 27,645 $ 36,795 $ 583 $ 65,275 Shares issued in primary portion of offerings 224,647 264 18,921 786,573 24,199,764 47,562,870 901,225 73,694,264 DRP shares issued 3,454 17 455 22,311 2,909,959 3,872,290 61,378 6,869,864 Stock distribution shares issued — — — — 263,642 300,166 4,677 568,485 Restricted stock issued — — — 10,500 — — 36,000 46,500 Total redemptions — — — — (1,528,918 ) (1,744,366 ) (23,956 ) (3,297,240 ) Total shares outstanding as of March 31, 2019 228,101 281 19,376 819,384 25,844,447 49,990,960 979,324 77,881,873 Total shares outstanding as of December 31, 2018 227,311 279 19,268 806,014 25,729,035 49,768,687 975,379 77,525,973
Organizational and offering costs incurred	Organizational and offering costs incurred as of March 31, 2019 , including those incurred by the Company and due to the Advisor, for the Follow-On Offering are as follows: March 31, 2019 Cumulative offering costs $ 3,161 Cumulative organizational costs $ 536 Organizational and offering costs advanced by the Advisor $ 2,244 Organizational and offering costs paid by the Company 1,453 Adjustment to organizational and offering costs pursuant to the limitation: Costs in excess of limit (2,202 ) Organizational and offering costs incurred $ 1,495
Schedule of stock redeemed	During the three months ended March 31, 2019 and 2018 , the Company redeemed shares of its outstanding common stock under the IPO Share Redemption Program as follows: Three Months Ended March 31, 2019 2018 Shares of common stock redeemed — 217,088 Weighted average price per share $ — $ 9.15

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	3 Months Ended
	Mar. 31, 2019
Noncontrolling Interest [Abstract]
Redeemable noncontrolling interest	The following summarizes the activity for noncontrolling interests for the three months ended March 31, 2019 and the year ended December 31, 2018 : Three Months Ended March 31, 2019 Year Ended December 31, 2018 Beginning balance $ 1,182 $ 76 Issuance of limited partnership units (1) 3,904 1,185 Distributions to noncontrolling interests (47 ) (70 ) Net loss allocation (7 ) (6 ) Other comprehensive loss — (3 ) Ending balance $ 5,032 $ 1,182 (1) Issuance of limited partnership units were made to affiliates. See Note 9, Related Party Transactions , for further details.

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2019
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	Summarized below are the related party costs incurred by the Company for the three months ended March 31, 2019 , and 2018 , respectively, and amounts payable as of March 31, 2019 and December 31, 2018 : Incurred for the Three Months Ended March 31, Payable as of March 31, Payable as of December 31, 2019 2018 2019 2018 Expensed Corporate operating expenses $ 829 $ 678 $ 892 $ 63 Other operating expenses (1) — — 215 215 Property management fees 481 459 165 157 Performance distribution allocation 1,920 2,061 1,920 7,807 Advisory fees 2,339 2,301 — 781 Capitalized/Offering Organization and offering expense 3 240 1,316 (5) 1,312 Other costs advanced by the Advisor 228 71 374 367 Selling commissions (2) — 11 — — Dealer Manager fees — 45 — — Stockholder servicing fee (3) — 82 7,252 8,302 Distribution fees 5 — — — Advisor advances: (4) Organization and offering — 18 34 44 Dealer Manager fees — — — — Total $ 5,805 $ 5,966 $ 12,168 $ 19,048 (1) Other operating expenses include costs incurred by the Company's former sponsor, GCC, related to acquisition transactions that failed to close. (2) On September 18, 2017, the Company and the Dealer Manager entered into a dealer manager agreement for the Follow-On Offering. See the " Dealer Manager Agreement " section below for details regarding selling commissions and dealer manager fees. (3) The Dealer Manager continues to receive a stockholder servicing fee with respect to Class AA shares as detailed in the Company's IPO prospectus. The stockholder servicing fee is paid quarterly and accrues daily in an amount equal to 1/365th of 1.0% of the NAV per share of the Class AA shares, up to an aggregate of 4% of the gross proceeds of Class AA shares sold. The Company will cease paying the stockholder servicing fee with respect to the Class AA shares at the earlier of (i) the date at which the aggregate underwriting compensation from all sources equals 10% of the gross proceeds from the sale of shares in the Company's IPO (excluding proceeds from sales pursuant to the related DRP); (ii) the fourth anniversary of the last day of the fiscal quarter in which the Company's IPO terminated; (iii) the date that such Class AA share is redeemed or is no longer outstanding; and (iv) the occurrence of a merger, listing on a national securities exchange, or an extraordinary transaction. (4) Pursuant to the original advisory agreement, commencing November 2, 2015, the Company remained obligated to reimburse the Advisor for organizational and offering costs incurred after such date. Terms of the organizational and offering costs are included in the Company's 2016 Annual Report on Form 10-K filed on March 15, 2017. (5) Excludes amounts in excess of the 15% organization and offering costs limitation, which includes a receivable of approximately $1.3 million from the Company's Advisor and is included in "Due from Affiliates" on the consolidated balance sheet. See Note 7, Equity , for additional details.

Organization - Narrative (Detai

Organization - Narrative (Details) $ in Millions	Sep. 20, 2017USD ($)stock_class
Follow-on Offering
Subsidiary, Sale of Stock [Line Items]
Offering amount in sales of shares	$ 2,200
Number of new classes of common stock | stock_class	4
SMInimum holdnf period for qualified IPO shares under program	4 years
Minimum holding period for redemption of stock	1 year
Primary Offering
Subsidiary, Sale of Stock [Line Items]
Offering amount in sales of shares	$ 2,000
Distribution Reinvestment Plan
Subsidiary, Sale of Stock [Line Items]
Common stock of the Company pursuant to the distribution reinvestment plan (in shares)	$ 200

Basis of Presentation and Sum_4

Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended
	Mar. 31, 2019segment
Accounting Policies [Abstract]
Number of reportable segments	1

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Prior Period Presentation of Statement of Operations Line Items (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Rental income	$ 26,400	$ 26,789
Presentation prior to January 1, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Rental income		22,010
Property expense recovery		$ 4,779

Real Estate - Narrative (Detail

Real Estate - Narrative (Details) $ in Thousands, ft² in Millions	3 Months Ended
	Mar. 31, 2019USD ($)ft²statePropertybuilding	Mar. 31, 2018USD ($)
Real Estate [Abstract]
Number of properties (property) | Property	27
Number of buildings (building) | building	35
Number of states (state) | state	17
Combined acquisition value	$ 1,100,000
Area of real estate property (in sqft) | ft²	7.3
Depreciation of building and improvements	$ 5,062	$ 5,031
Amortization expense	$ 6,000

Real Estate - Future Minimum Co

Real Estate - Future Minimum Contractual Rent Payments (Details) $ in Thousands	Mar. 31, 2019USD ($)
Schedule of future minimum net rent payments
Remaining 2019	$ 59,269
2020	80,495
2021	72,680
2022	73,541
2023	71,311
Thereafter	457,574
Total	$ 814,870

Real Estate - In-Place Lease Va

Real Estate - In-Place Lease Valuation and Tenant Origination and Absorption Costs (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Above Market Lease [Abstract]
In-place lease valuation (above market)	$ 4,046	$ 4,046
In-place lease valuation (above market), accumulated amortization	(1,215)	(1,123)
Intangible assets, net	2,831	2,923
Below Market Lease, Net [Abstract]
In-place lease valuation (below market)	(62,070)	(62,070)
In-place lease valuation (below market) - accumulated amortization	17,091	15,841
In-place lease valuation (below market), net	(44,979)	(46,229)
Tenant Origination and Absorption Cost
Finite-Lived Intangible Assets, Net [Abstract]
Tenant origination and absorption cost	240,364	240,364
Tenant origination and absorption cost - accumulated amortization	(77,331)	(71,364)
Tenant origination and absorption cost, net	$ 163,033	$ 169,000

Real Estate - Estimated Annual

Real Estate - Estimated Annual Amortization (Income) Expense for In-Place Lease (Details) $ in Thousands	Mar. 31, 2019USD ($)
In-Place Lease Valuation
Remaining 2019	$ (3,537)
2020	(4,695)
2021	(3,799)
2022	(3,774)
2023	(2,901)
Tenant Origination and Absorption Cost
Tenant Origination and Absorption Costs
Remaining 2019	18,232
2020	24,198
2021	19,715
2022	19,256
2023	$ 16,502

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Oct. 22, 2015	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total Debt		$ 500,055	$ 490,055
Unamortized deferred financing costs		(7,706)	(8,100)
Total debt		$ 492,349	481,955
Debt, Weighted Average Interest Rate		4.18%
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate		2.50%
Mortgage Debt
Debt Instrument [Line Items]
Total Debt		$ 376,970	376,970
Mortgage Debt | BofA/KeyBank Loan
Debt Instrument [Line Items]
Total Debt		$ 250,000	250,000
Contractual interest rate		4.32%
Effective interest rate (percent)		4.42%
Mortgage Debt | AIG Loan
Debt Instrument [Line Items]
Total Debt		$ 126,970	126,970
Contractual interest rate		4.15%
Effective interest rate (percent)		4.22%
Debt Instrument, Payment Terms, Duration Requiring Monthly Payments of Interest Only		5 years
Term Loan | AIG Loan
Debt Instrument [Line Items]
Total debt	$ 127,000
Contractual interest rate	4.15%
Debt Instrument, Payment Terms, Duration Requiring Monthly Payments of Interest Only	5 years
Initial term of debt instrument	10 years
Term Loan | Term Loan
Debt Instrument [Line Items]
Total Debt		$ 123,000	113,000
Effective interest rate (percent)		3.81%
Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Total Debt		$ 85	$ 85
Effective interest rate (percent)		4.04%
Initial term of debt instrument		4 years
Revolving credit facility, extension term		1 year

Debt - Narrative (Details)

Debt - Narrative (Details)	Jun. 28, 2018USD ($)	Apr. 27, 2018USD ($)propertyentity	Oct. 22, 2015USD ($)entity	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Weighted average interest rate (percent)				4.18%
Number of wholly owned SPE | entity		4	6
Number of properties owned by special purpose entities | property		4
Outstanding pursuant on loan				$ 500,055,000	$ 490,055,000
Long-term debt				492,349,000	481,955,000
Mortgage Debt
Debt Instrument [Line Items]
Outstanding pursuant on loan				376,970,000	376,970,000
Term Loan | Notes Payable, Other Payables
Debt Instrument [Line Items]
Outstanding pursuant on loan				$ 123,000,000	113,000,000
Revolving credit facility | Line of Credit
Debt Instrument [Line Items]
Initial term of debt instrument				4 years
Revolving credit facility, extension term				1 year
Outstanding pursuant on loan				$ 85,000	85,000
BofA/KeyBank Loan | Mortgage Debt
Debt Instrument [Line Items]
Contractual interest rate				4.32%
Outstanding pursuant on loan				$ 250,000,000	250,000,000
BofA/KeyBank Loan | Term Loan
Debt Instrument [Line Items]
Initial term of debt instrument		10 years
Loan amount borrowed		$ 250,000,000
Contractual interest rate		4.32%
Prior notice period required		30 days
Outstanding pursuant on loan				$ 250,000,000
AIG Loan | Mortgage Debt
Debt Instrument [Line Items]
Duration monthly payments of interest only				5 years
Contractual interest rate				4.15%
Outstanding pursuant on loan				$ 126,970,000	$ 126,970,000
AIG Loan | Notes Payable, Other Payables
Debt Instrument [Line Items]
Duration monthly payments of interest only			5 years
Initial term of debt instrument			10 years
Contractual interest rate			4.15%
Prior notice period required			30 days
Long-term debt			$ 127,000,000
Revolving Credit Facility | Revolving credit facility
Debt Instrument [Line Items]
Initial term of debt instrument	4 years
Revolving credit facility, extension term	1 year
Revolving credit facility current borrowing capacity	$ 550,000,000
Revolving credit facility, maximum borrowing capacity	$ 1,250,000,000
Remaining Borrowing Capacity				$ 214,400,000
Proceeds used to pay down portion of credit facility		$ 249,800,000
Number of wholly owned SPEs released from guarantor obligations | entity		4
Revolving Credit Facility | Key Bank Term Loan
Debt Instrument [Line Items]
Initial term of debt instrument	5 years
Revolving credit facility current borrowing capacity	$ 200,000,000
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
LIBOR as of the balance sheet date (percent)				2.50%
London Interbank Offered Rate (LIBOR) | Term Loan | Notes Payable, Other Payables
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.25%
London Interbank Offered Rate (LIBOR) | Revolving credit facility | Line of Credit
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.30%

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value (Details) - Mortgage Debt - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value | AIG Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt fair value	$ 120,805	$ 120,599
Fair Value | BofA/KeyBank Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt fair value	256,299	249,566
Carrying Value | AIG Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt fair value	126,970	126,970
Carrying Value | BofA/KeyBank Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt fair value	$ 250,000	$ 250,000

Accrued Expenses and Other Li_3

Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Prepaid rent	$ 4,305	$ 4,709
Accrued property taxes	2,446	2,955
Interest expense payable	2,878	2,805
Other liabilities	3,332	10,554
Total	$ 12,961	$ 21,023

Equity - Narrative (Details)

Equity - Narrative (Details)	Sep. 20, 2017USD ($)	Mar. 31, 2019USD ($)vote$ / sharesshares	Mar. 31, 2018$ / sharesshares	Mar. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)
Class of Stock [Line Items]
Number of votes (in votes) | vote		1
Percent of organizational and offering costs limit (percent)		15.00%
Days required for reimbursement of excess amounts		60 days
Organizational costs as a percentage of gross offering proceeds (percent)		37.10%
Due to related parties		$ 12,168,000		$ 12,168,000	$ 19,048,000
Written notice needed to amend or terminate the DRP		10 days
Common stock subject to redemption		$ 37,274,000		$ 37,274,000	37,357,000
Stock Redeemed or Called During Period, Shares | shares		3,297,240
Stock Redeemed or Called During Period, Value					6,538,000
Follow-on Offering
Class of Stock [Line Items]
Offering amount in sales of shares	$ 2,200,000,000
Minimum holding period for redemption of stock	1 year
Primary Offering
Class of Stock [Line Items]
Offering amount in sales of shares	$ 2,000,000,000
Distribution Reinvestment Plan
Class of Stock [Line Items]
Common stock of the Company pursuant to the distribution reinvestment plan (in shares)	$ 200,000,000
Share Redemption Program
Class of Stock [Line Items]
Stock Redeemed or Called During Period, Shares | shares		0	217,088
Weighted average price per share (in dollars per share) | $ / shares		$ 0	$ 9.15
Share Redemption Program | IPO
Class of Stock [Line Items]
Minimum holding period for redemption of stock		4 years
New Share Redemption Program
Class of Stock [Line Items]
Minimum holding period for redemption of stock		1 year
Redemption price as percentage of Net Asset Value of outstanding shares (percent)		100.00%		100.00%
Minimum ownership percentage under share redemption program (percent)		$ 2,500		$ 2,500
Quarterly redemption cap as percentage of Net Asset Value of outstanding shares (percent)		5.00%
Common stock subject to redemption		$ 37,300,000		$ 37,300,000
Stock Redeemed or Called During Period, Shares | shares		0	0	1,199,463.98
Weighted average price per share (in dollars per share) | $ / shares				$ 9.62
Written notice required to modify or suspend program		30 days
New Share Redemption Program | IPO
Class of Stock [Line Items]
Minimum holding period for redemption of stock		4 years
Organizational and Offering Costs Incurred | IPO
Class of Stock [Line Items]
Cumulative organizational costs		$ 3,700,000		$ 3,700,000
Proceeds from offering		10,000,000
Organizational and offering costs advanced by the Advisor
Class of Stock [Line Items]
Cumulative organizational costs		536,000		536,000
Due to related parties		1,316,000		1,316,000	$ 1,312,000
Due to Affiliates | Organizational and offering costs advanced by the Advisor
Class of Stock [Line Items]
Due from related parties		900,000		900,000
Other Assets | Organizational and offering costs advanced by the Advisor
Class of Stock [Line Items]
Due from related parties		1,300,000		1,300,000
Pro forma | Organizational and offering costs advanced by the Advisor
Class of Stock [Line Items]
Due to related parties		1,500,000		1,500,000
Due from related parties		$ 2,200,000		2,200,000
Common Stock | Share Redemption Program
Class of Stock [Line Items]
Stock Redeemed or Called During Period, Value				$ 11,500,000

Equity - Shares Issued and Gros

Equity - Shares Issued and Gross Proceeds (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Total redemptions (shares)	(3,297,240)
Total shares outstanding (in shares)	77,881,873	77,525,973
Class T
Class of Stock [Line Items]
Total redemptions (shares)	0
Total shares outstanding (in shares)	228,101	227,311
Class S
Class of Stock [Line Items]
Total redemptions (shares)	0
Total shares outstanding (in shares)	281	279
Class D
Class of Stock [Line Items]
Total redemptions (shares)	0
Total shares outstanding (in shares)	19,376	19,268
Class I
Class of Stock [Line Items]
Total redemptions (shares)	0
Total shares outstanding (in shares)	819,384	806,014
Class A
Class of Stock [Line Items]
Total redemptions (shares)	(1,528,918)
Total shares outstanding (in shares)	25,844,447	25,729,035
Class AA
Class of Stock [Line Items]
Total redemptions (shares)	(1,744,366)
Total shares outstanding (in shares)	49,990,960	49,768,687
Class AAA
Class of Stock [Line Items]
Total redemptions (shares)	(23,956)
Total shares outstanding (in shares)	979,324	975,379
IPO
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 733,987
Common stock, number of shares issued (in shares)	73,694,264
IPO | Class T
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 2,245
Common stock, number of shares issued (in shares)	224,647
IPO | Class S
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 3
Common stock, number of shares issued (in shares)	264
IPO | Class D
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 182
Common stock, number of shares issued (in shares)	18,921
IPO | Class I
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 7,538
Common stock, number of shares issued (in shares)	786,573
IPO | Class A
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 240,780
Common stock, number of shares issued (in shares)	24,199,764
IPO | Class AA
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 474,858
Common stock, number of shares issued (in shares)	47,562,870
IPO | Class AAA
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 8,381
Common stock, number of shares issued (in shares)	901,225
Distribution Reinvestment Plan
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 65,275
Common stock, number of shares issued (in shares)	6,869,864
Distribution Reinvestment Plan | Class T
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 33
Common stock, number of shares issued (in shares)	3,454
Distribution Reinvestment Plan | Class S
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 0
Common stock, number of shares issued (in shares)	17
Distribution Reinvestment Plan | Class D
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 4
Common stock, number of shares issued (in shares)	455
Distribution Reinvestment Plan | Class I
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 215
Common stock, number of shares issued (in shares)	22,311
Distribution Reinvestment Plan | Class A
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 27,645
Common stock, number of shares issued (in shares)	2,909,959
Distribution Reinvestment Plan | Class AA
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 36,795
Common stock, number of shares issued (in shares)	3,872,290
Distribution Reinvestment Plan | Class AAA
Class of Stock [Line Items]
Gross proceeds received to date of shares issued	$ 583
Common stock, number of shares issued (in shares)	61,378
Share Distribution
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	568,485
Share Distribution | Class T
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Share Distribution | Class S
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Share Distribution | Class D
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Share Distribution | Class I
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Share Distribution | Class A
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	263,642
Share Distribution | Class AA
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	300,166
Share Distribution | Class AAA
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	4,677
Restricted stock units issued
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	46,500
Restricted stock units issued | Class T
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Restricted stock units issued | Class S
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Restricted stock units issued | Class D
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Restricted stock units issued | Class I
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	10,500
Restricted stock units issued | Class A
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Restricted stock units issued | Class AA
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	0
Restricted stock units issued | Class AAA
Class of Stock [Line Items]
Common stock, number of shares issued (in shares)	36,000

Equity - Organizational Costs (

Equity - Organizational Costs (Details) - Organizational and offering costs advanced by the Advisor $ in Thousands	Mar. 31, 2019USD ($)
Related Party Transaction [Line Items]
Cumulative offering costs	$ 3,161
Cumulative organizational costs	536
Organizational and offering costs advanced by the Advisor	2,244
Organizational and offering costs paid by the Company	1,453
Costs in excess of limit	(2,202)
Organizational and offering costs incurred	$ 1,495

Equity - Shares Redeemed (Detai

Equity - Shares Redeemed (Details) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Shares of common stock redeemed (shares)	3,297,240
Share Redemption Program
Equity, Class of Treasury Stock [Line Items]
Shares of common stock redeemed (shares)	0	217,088
Weighted average price per share (in dollars per share)	$ 0	$ 9.15

Noncontrolling Interests - Narr

Noncontrolling Interests - Narrative (Details) - $ / shares	Feb. 14, 2019	Mar. 31, 2019	Feb. 11, 2014
Operating Partnership
Noncontrolling Interest [Line Items]
Number of common shares that can be issued by Operating Partnership upon redemption of each limited partnership units (shares)		1
Duration required prior to which partners can exercise their redemption rights		1 year
The Advisor
Noncontrolling Interest [Line Items]
Limited partnership units issued (in shares)	403,266
Price per partnership unit (in USD per share)	$ 9.68
Percentage of performance distribution allocation	50.00%
Operating Partnership | Shares Outstanding | The Advisor
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (percent)		0.70%
Operating Partnership | Weighted Average Shares Outstanding | The Advisor
Noncontrolling Interest [Line Items]
Ownership percentage by noncontrolling owners (percent)		0.45%
Limited Partner | Operating Partnership
Noncontrolling Interest [Line Items]
Limited partnership units issued (in shares)			20,000
Price per partnership unit (in USD per share)			$ 10

Noncontrolling Interests - Sche

Noncontrolling Interests - Schedule of Noncontrolling Interests (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance	$ 1,182
Issuance of limited partnership units	3,904	$ 1,185
Distributions to noncontrolling interest	(47)	(70)
Net loss allocation	(1,647)	(3,287)
Other comprehensive loss		(952)
Ending balance	5,032	1,182
Non- controlling Interests
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Beginning balance	1,182	76
Issuance of limited partnership units	3,904	1,185
Distributions to noncontrolling interest	(47)	(70)
Net loss allocation	(7)	(6)
Other comprehensive loss	0	(3)
Ending balance	$ 5,032	$ 1,182

Related Party Transactions - Sc

Related Party Transactions - Schedule of Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Percentage of Organizational and Offering Costs Limit	15.00%
Due to Related Parties [Roll Forward]
Incurred	$ 5,805	$ 5,966
Due to affiliates	12,168		$ 19,048
Corporate operating expenses
Due to Related Parties [Roll Forward]
Incurred	829	678
Due to affiliates	892		63
Other operating expenses
Due to Related Parties [Roll Forward]
Incurred	0	0
Due to affiliates	215		215
Property management fees
Due to Related Parties [Roll Forward]
Incurred	481	459
Due to affiliates	165		157
Performance distribution allocation
Due to Related Parties [Roll Forward]
Incurred	1,920	2,061
Due to affiliates	1,920		7,807
Advisory fees
Due to Related Parties [Roll Forward]
Incurred	2,339	2,301
Due to affiliates	0		781
Capitalized/Offering - Organization and offering expense
Due to Related Parties [Roll Forward]
Incurred	3	240
Due to affiliates	1,316		1,312
Capitalized/Offering - Other costs advanced by the Advisor
Due to Related Parties [Roll Forward]
Incurred	228	71
Due to affiliates	374		367
Capitalized/Offering - Selling commissions
Due to Related Parties [Roll Forward]
Incurred	0	11
Due to affiliates	0		0
Capitalized/Offering - Dealer Manager fees
Due to Related Parties [Roll Forward]
Incurred	0	45
Due to affiliates	0		0
Capitalized/Offering - Stockholder servicing fee
Due to Related Parties [Roll Forward]
Incurred	0	82
Due to affiliates	7,252		8,302
Capitalized/Offering - Distribution fees
Due to Related Parties [Roll Forward]
Incurred	5	0
Due to affiliates	0		0
Organization and offering expenses
Due to Related Parties [Roll Forward]
Incurred	0	18
Due to affiliates	34		44
Advisor advances - Dealer Manager fees
Due to Related Parties [Roll Forward]
Incurred	0	$ 0
Due to affiliates	$ 0		$ 0
Class AA | Dealer Manager Agreement
Related Party Transaction [Line Items]
Related Party Stockholder Servicing Fee for Issuance of Shares, Percent	4.00%

Related Party Transactions - Na

Related Party Transactions - Narrative (Details) $ in Thousands, ft² in Millions	Sep. 20, 2017USD ($)shares	Feb. 28, 2019USD ($)	Mar. 31, 2019USD ($)ft²shares	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Related Party Transaction [Line Items]
Area of real estate property (in sqft) | ft²			7.3
Incurred			$ 5,805	$ 5,966
Real estate property			$ 1,182,342		$ 1,182,214
Class T
Related Party Transaction [Line Items]
Outstanding shares owned by affiliates (shares) | shares			280
Stockholder servicing fee			0.00274%
Class S
Related Party Transaction [Line Items]
Outstanding shares owned by affiliates (shares) | shares			280
Stockholder servicing fee			0.00274%
Class D
Related Party Transaction [Line Items]
Outstanding shares owned by affiliates (shares) | shares			283
Stockholder servicing fee			0.00068%
Class I
Related Party Transaction [Line Items]
Outstanding shares owned by affiliates (shares) | shares			283,016
Class A
Related Party Transaction [Line Items]
Outstanding shares owned by affiliates (shares) | shares			287,449
The Advisor
Related Party Transaction [Line Items]
Due from related parties			$ 1,300
Shares sold to Advisor	$ 2,500
The Advisor | Class T
Related Party Transaction [Line Items]
Shares sold to Advisor (shares) | shares	264
The Advisor | Class S
Related Party Transaction [Line Items]
Shares sold to Advisor (shares) | shares	264
The Advisor | Class D
Related Party Transaction [Line Items]
Shares sold to Advisor (shares) | shares	264
The Advisor | Class I
Related Party Transaction [Line Items]
Shares sold to Advisor (shares) | shares	263,200
Organizational and offering costs advanced by the Advisor
Related Party Transaction [Line Items]
Incurred			$ 3	240
Advisory Agreement | Class T
Related Party Transaction [Line Items]
Stockholder servicing fee			0.00342%
Performance distribution allocation
Related Party Transaction [Line Items]
Percentage of performance distribution allocation			12.50%
Performance Distribution, Hurdle Rate, Annualized Rate Of Return On Net Asset Value			5.50%
Related party transaction		$ 3,900
Incurred			$ 1,920	2,061
Dealer Manager Agreement
Related Party Transaction [Line Items]
Underwriting compensation as percent of proceeds (percent)			10.00%
Dealer Manager Agreement | Class T
Related Party Transaction [Line Items]
Stockholder servicing fee			0.00274%
Dealer Distribution Fee | Class T
Related Party Transaction [Line Items]
Stockholder servicing fee			0.00068%
Advisor Distribution Fee | Class T
Related Party Transaction [Line Items]
Stockholder servicing fee			0.00205%
Reimbursement, Services Provided That Are not Entitled to Advisor Fees | The Advisor
Related Party Transaction [Line Items]
Incurred			$ 200	150
Reimbursement, Reimbursible Expenses
Related Party Transaction [Line Items]
Average invested assets for preceding 12 months (percent)			2.00%
Percentage of Company's net income before addition of reserves (percent)			25.00%
Reimbursement, Reimbursible Expenses | The Advisor
Related Party Transaction [Line Items]
Incurred			$ 0	10
Property management fees
Related Party Transaction [Line Items]
Incurred			$ 481	$ 459
Property manager oversight fee as percent of gross revenues of property managed (percent)			1.00%
Limited partnership units | Performance distribution allocation
Related Party Transaction [Line Items]
Related party transaction		$ 3,900
Cash election under transaction agreement		50.00%

Declaration of Distributions -

Declaration of Distributions - Narrative (Details) - $ / shares	Mar. 13, 2019	May 09, 2018	Mar. 31, 2019	Mar. 31, 2018
Class of Stock [Line Items]
Distributions declared, daily accrual (usd per share)		$ 0.0015068493	$ 0.14	$ 0.14
Class T
Class of Stock [Line Items]
Dividends paid (in USD per share)			0.00150684932
Distributions declared, daily accrual (usd per share)	$ 0.00150684932
Class S
Class of Stock [Line Items]
Dividends paid (in USD per share)			0.00150684932
Class D
Class of Stock [Line Items]
Dividends paid (in USD per share)			0.0015068493
Distributions declared, daily accrual (usd per share)	0.0015068493
Class I
Class of Stock [Line Items]
Dividends paid (in USD per share)			0.0015068493
Distributions declared, daily accrual (usd per share)	0.0015068493
Class A
Class of Stock [Line Items]
Dividends paid (in USD per share)			0.0015068493
Distributions declared, daily accrual (usd per share)	0.0015068493
Class AA
Class of Stock [Line Items]
Dividends paid (in USD per share)			0.0015068493
Distributions declared, daily accrual (usd per share)	0.0015068493
Class AAA
Class of Stock [Line Items]
Dividends paid (in USD per share)			$ 0.0015068493
Distributions declared, daily accrual (usd per share)	$ 0.0015068493

Subsequent Events - Narrative (

Subsequent Events - Narrative (Details) $ / shares in Units, ft² in Millions	May 13, 2019USD ($)shares	May 01, 2019shares	Apr. 30, 2019USD ($)ft²propertystatebuilding$ / sharesshares	Mar. 13, 2019$ / shares	May 09, 2018$ / shares	Mar. 31, 2019USD ($)statePropertybuilding$ / shares	Mar. 31, 2018USD ($)$ / shares	Dec. 31, 2018USD ($)	May 06, 2019USD ($)$ / shares	Apr. 29, 2019shares
Subsequent Event [Line Item]
Issuance of shares for distribution reinvestment plan | $						$ 3,323,000	$ 5,483,000	$ 0
Distributions declared, daily accrual (usd per share)					$ 0.0015068493	$ 0.14	$ 0.14
Number of buildings (building) | building						35
Number of properties (property) | Property						27
Number of states (state) | state						17
Debt finance costs paid | $						$ 0	$ 5,275,000
Subsequent Event
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)			$ 0.00150684932
Stock distribution declared (in usd per share)			$ 0.000273973
Partnership units issued upon conversion (shares) | shares			1
Number of buildings (building) | building			124
Number of properties (property) | property			101
Number of states (state) | state			25
Rentable area (in sq ft) | ft²			27.2
Weighted average remaining lease term			7 years 5 months 23 days
Subsequent Event | Distribution Reinvestment Plan
Subsequent Event [Line Item]
Issuance of shares for distribution reinvestment plan (shares) | shares	7,396,052
Issuance of shares for distribution reinvestment plan | $	$ 70,300,000
Subsequent Event | Follow-on Offering
Subsequent Event [Line Item]
Issuance of shares for distribution reinvestment plan (shares) | shares	1,030,404
Issuance of shares for distribution reinvestment plan | $	$ 10,000,000
Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Common stock, par value (in USD per share)									$ 0.001
Self-tender offer amount | $									$ 100,000,000
Griffin Capital Essential Asset REIT, Inc. | Subsequent Event
Subsequent Event [Line Item]
Common stock, par value (in USD per share)			$ 0.001
Common Class E | Subsequent Event
Subsequent Event [Line Item]
Common stock, par value (in USD per share)			$ 0.001
New shares issued upon conversion (shares)			1.04807
New partnership units issued upon conversion (shares)			1.04807
Common Class E | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									$ 9.56
Series A Preferred Stock | Subsequent Event
Subsequent Event [Line Item]
Shares issued upon conversion (shares) | shares			1
Preferred stock authorized (shares) | shares										10,000,000
Preferred stock issued (shares) | shares			5,000,000
Preferred stock annual distribution rate (percent)			6.55%
Class A
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)				$ 0.0015068493
Class A | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									9.56
Class AA
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)				0.0015068493
Class AA | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									9.56
Class AAA
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)				0.0015068493
Class AAA | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									9.56
Class T
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)				0.00150684932
Class T | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									9.66
Class D
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)				0.0015068493
Class D | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									9.64
Class S | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									9.65
Class I
Subsequent Event [Line Item]
Distributions declared, daily accrual (usd per share)				$ 0.0015068493
Class I | Subsequent Event | the Company Offer
Subsequent Event [Line Item]
Cash purchase price (in usd per share)									$ 9.64
Revolving Credit Facility | 2026 Term Commitment | Subsequent Event
Subsequent Event [Line Item]
Revolving credit facility current borrowing capacity | $			$ 150,000,000
Revolving Credit Facility | 2024 Term Commitment | Subsequent Event
Subsequent Event [Line Item]
Revolving credit facility current borrowing capacity | $			$ 400,000,000
Revolving Credit Facility | 2024 Term Loan | Subsequent Event
Subsequent Event [Line Item]
Initial term of debt instrument			5 years
Revolving Credit Facility | 2023 Term Loan | Subsequent Event
Subsequent Event [Line Item]
Initial term of debt instrument			5 years
Revolving Credit Facility | 2023 Term Commitment | Subsequent Event
Subsequent Event [Line Item]
Commitment fee (percent)			0.25%
Revolving credit facility current borrowing capacity | $			$ 200,000,000
Revolving Credit Facility | Revolving Commitment | Subsequent Event
Subsequent Event [Line Item]
Debt finance costs paid | $			$ 5,700,000
Revolving credit facility, extension term			1 year
Revolving credit facility, maximum borrowing capacity | $			$ 2,000,000,000
Minimum increment to commitment amount authorized | $			25,000,000
Authorized decrease in commitment amount | $			50,000,000
Minimum borrowing capacity | $			150,000,000
Revolving credit facility current borrowing capacity | $			$ 750,000,000
Initial term of debt instrument			3 years
Number of pool properties called by debt covenant | property			15
Maximum aggregate pool value to be contributed by single pool property or tenant (percent)			15.00%
Maximum aggregate pool value that may be contributed by Pool Properties subject to ground leases (percent)			15.00%
Maximum aggregate pool value that may be contributed by Pool Properties under development (percent)			20.00%
Minimum aggregate leasing percentage of all Pool Properties (percent)			90.00%
Asset pool leverage ratio (percent)			60.00%
Debt service coverage ratio			200.00%
Commitment fee | $			$ 25,000
Percentage of commitment (percent)			50.00%
Consolidated leverage ratio			60.00%
Consolidated tangible net worth (percent)			75.00%
Consolidated tangible net worth | $			$ 2,000,000,000
Consolidated net worth as a percentage of future equity issuances (percent)			75.00%
Consolidated fixed charge ratio			1.50
Maximum total secured debt ratio (percent)			40.00%
Increase to maximum total secured debt ratio upon closing of a material acquisition financed with secured debt (percent)			5.00%
Minimum unsecured interest coverage ratio			2
Maximum total secured recourse debt ratio			10.00%
Maximum unhedged variable rate debt as a percent of total asset value			30.00%
Maximum payout ratio			95.00%
Maximum unimproved land as a percentage of total asset value (percent)			5.00%
Maximum pre-leased assets under development as a percentage of total asset value (percent)			20.00%
Maximum investments in unconsolidated affiliates as a percentage of total asset value (percent)			10.00%
Maximum investments in mortgages receivable as a percentage of total asset value (percent)			15.00%
Maximum leased assets under renovation as a percentage of total asset value (percent)			10.00%
Maximum aggregate investments as a percentage of total asset value (percent)			25.00%
Revolving Credit Facility | Swingline advances | Subsequent Event
Subsequent Event [Line Item]
Revolving credit facility, maximum borrowing capacity | $			$ 125,000,000
Initial term of debt instrument			10 days
Revolving Credit Facility | 2026 Term Loan | Subsequent Event
Subsequent Event [Line Item]
Initial term of debt instrument			7 years
Minimum | Revolving Credit Facility | Revolving Commitment | Subsequent Event
Subsequent Event [Line Item]
Commitment fee (percent)			0.15%
Maximum | Revolving Credit Facility | Revolving Commitment | Subsequent Event
Subsequent Event [Line Item]
Commitment fee (percent)			0.20%
Consolidated leverage ratio			65.00%
Restricted Stock Units (RSUs) | Mr. Escalante | Executive Officers | Time-Based Restricted Stock Unit Agreements | Subsequent Event
Subsequent Event [Line Item]
RSUs issued (shares) | shares		732,218
Restricted Stock Units (RSUs) | Mr. Bitar | Executive Officers | Time-Based Restricted Stock Unit Agreements | Subsequent Event
Subsequent Event [Line Item]
RSUs issued (shares) | shares		104,603
Restricted Stock Units (RSUs) | Mr. Hirsch | Executive Officers | Time-Based Restricted Stock Unit Agreements | Subsequent Event
Subsequent Event [Line Item]
RSUs issued (shares) | shares		67,992
Restricted Stock Units (RSUs) | Mr. Sohn | Executive Officers | Time-Based Restricted Stock Unit Agreements | Subsequent Event
Subsequent Event [Line Item]
RSUs issued (shares) | shares		52,301
Restricted Stock Units (RSUs) | Mr. Tausk | Executive Officers | Time-Based Restricted Stock Unit Agreements | Subsequent Event
Subsequent Event [Line Item]
RSUs issued (shares) | shares		52,301