Industrial Logistics Properties Trust (ILPT) 10-Q 26 Apr 22 2022 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 22, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-38342
Entity Registrant Name	INDUSTRIAL LOGISTICS PROPERTIES TRUST
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	82-2809631
Entity Address, Address Line One	Two Newton Place,
Entity Address, Address Line Two	255 Washington Street,
Entity Address, Address Line Three	Suite 300
Entity Address, City or Town	Newton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02458-1634
City Area Code	617
Local Phone Number	219-1460
Title of 12(b) Security	Common Shares of Beneficial Interest
Trading Symbol	ILPT
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		65,403,859
Entity Central Index Key	0001717307
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Real estate properties:
Land	$ 1,026,237	$ 699,037
Buildings and improvements	3,524,573	1,049,796
Total real estate properties, gross	4,550,810	1,748,833
Accumulated depreciation	(182,482)	(167,490)
Total real estate properties, net	4,368,328	1,581,343
Assets of properties held for sale	731,964	0
Investment in unconsolidated joint venture	143,428	143,021
Acquired real estate leases, net	282,314	63,441
Cash and cash equivalents	275,075	29,397
Restricted cash	146,354	0
Rents receivable, including straight line rents of $70,253 and $69,173, respectively	77,443	75,877
Other assets, net	78,887	15,479
Total assets	6,103,793	1,908,558
LIABILITIES AND EQUITY
Revolving credit facility	0	182,000
Bridge loan facility	1,356,606	0
Mortgage notes payable, net	3,031,819	646,124
Liabilities of properties held for sale	10,516	0
Assumed real estate lease obligations, net	25,943	12,435
Accounts payable and other liabilities	68,863	27,772
Due to related persons	6,077	2,185
Total liabilities	4,499,824	870,516
Commitments and contingencies
Equity attributable to common shareholders:
Common Stock, Value, Issued	654	654
Additional paid in capital	1,012,622	1,012,224
Cumulative net income	337,394	343,908
Cumulative other comprehensive income	3,908	0
Cumulative common distributions	(340,328)	(318,744)
Total equity attributable to common shareholders	1,014,250	1,038,042
Noncontrolling interest:
Total equity attributable to noncontrolling interest	589,719	0
Total equity	1,603,969	1,038,042
Total liabilities and equity	$ 6,103,793	$ 1,908,558

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Straight line rents	$ 70,253	$ 69,173
Common shares, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, shares authorized (in shares)	100,000,000	100,000,000
Common shares, shares issued (in shares)	65,403,859	65,404,592
Common shares, shares outstanding (in shares)	65,403,859	65,404,592

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
REVENUES:
Rental income	$ 71,375	$ 54,217
Expenses:
Real estate taxes	9,436	7,247
Other operating expenses	6,772	4,976
Depreciation and amortization	22,878	12,678
General and administrative	6,077	3,756
Total expenses	45,163	28,657
Realized gain on sale of equity securities	1,232	0
Unrealized gain on equity securities	2,460	0
Dividend income	478	0
Interest expense (including net amortization of debt issuance costs, premiums and discounts of $20,321 and $505, respectively)	(40,999)	(8,741)
Loss on early extinguishment of debt	(828)	0
Income (loss) before income tax expense and equity in earnings of investees	(11,445)	16,819
Income tax expense	(69)	(63)
Equity in earnings of investees	1,727	2,581
Net (loss) income	(9,787)	19,337
Net loss attributable to noncontrolling interest	3,273	0
Net (loss) income attributable to common shareholders	(6,514)	19,337
Other comprehensive income:
Unrealized gain on derivatives	5,632	0
Less: unrealized gain on derivatives attributable to noncontrolling interest	(1,724)	0
Other comprehensive income attributable to common shareholders	3,908	0
Comprehensive (loss) income attributable to common shareholders	$ (2,606)	$ 19,337
Weighted average common shares outstanding - basic (in shares)	65,212	65,139
Weighted average common shares outstanding - diluted (in shares)	65,212	65,177
Per common share data (basic and diluted):
Net (loss) income attributable to common shareholders, basic (in usd per share)	$ (0.10)	$ 0.30
Net (loss) income attributable to common shareholders, diluted (in usd per share)	$ (0.10)	$ 0.30

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Amortization of debt issuance costs and premium	$ 20,321	$ 505

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Total Equity Attributable to Common Shareholders	Common shares	Additional Paid-in Capital	Cumulative Net Income	Cumulative Other Comprehensive Income	Cumulative Common Distributions	Total Attributable to Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2020			65,301,088
Beginning balance at Dec. 31, 2020	$ 1,003,190	$ 1,003,190	$ 653	$ 1,010,819	$ 224,226		$ (232,508)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	19,337	19,337			19,337
Share grants	239	239		239
Distributions to common shareholders	(21,550)	(21,550)					(21,550)
Ending balance (in shares) at Mar. 31, 2021			65,301,088
Ending balance at Mar. 31, 2021	1,001,216	1,001,216	$ 653	1,011,058	243,563		(254,058)	0
Beginning balance (in shares) at Dec. 31, 2021			65,404,592
Beginning balance at Dec. 31, 2021	1,038,042	1,038,042	$ 654	1,012,224	343,908	$ 0	(318,744)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(9,787)	(6,514)			(6,514)			(3,273)
Share grants	407	407		407
Share repurchases (in shares)			(333)
Share repurchases	(7)	(7)		(7)
Shares forfeitures (in shares)			(400)
Share forfeitures	(1)	(1)		(1)
Net current period other comprehensive income	5,632	3,908				3,908		1,724
Contributions from noncontrolling interest	591,268							591,268
Distributions to common shareholders	(21,584)	(21,584)					(21,584)
Ending balance (in shares) at Mar. 31, 2022			65,403,859
Ending balance at Mar. 31, 2022	$ 1,603,969	$ 1,014,250	$ 654	$ 1,012,622	$ 337,394	$ 3,908	$ (340,328)	$ 589,719

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (9,787)	$ 19,337
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	14,992	7,617
Net amortization of debt issuance costs, premiums and discounts	20,320	505
Amortization of acquired real estate leases and assumed real estate lease obligations	7,223	4,673
Amortization of deferred leasing costs	361	211
Unrealized gain on equity securities	(2,460)	0
Realized gain on sale of equity securities	(1,232)
Straight line rental income	(1,156)	(2,044)
Loss on early extinguishment of debt	828	0
Other non-cash expenses	696	239
Unconsolidated joint venture distributions	1,320	660
Equity in earnings of investees	(1,727)	(2,581)
Change in assets and liabilities:
Rents receivable	(1,309)	1,144
Deferred leasing costs	(3,226)	(771)
Due from related persons	0	1,256
Other assets	(15,018)	(787)
Accounts payable and other liabilities	22,502	508
Rents collected in advance	19,646	(289)
Security deposits	729	29
Due to related persons	3,937	(55)
Net cash provided by operating activities	56,639	29,652
CASH FLOWS FROM INVESTING ACTIVITIES:
Real estate acquisitions and deposits	(3,557,602)	0
Real estate improvements	(618)	(789)
Proceeds from sale of marketable securities	115,735	0
Net cash used in investing activities	(3,442,485)	(789)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of mortgage notes payable	2,100,000	0
Proceeds from secured bridge loan facility	1,385,158	0
Borrowings under revolving credit facility	3,000	9,000
Repayments of revolving credit facility	(185,000)	(13,000)
Repayment of mortgage notes payable	(1,782)	0
Payment of debt issuance costs	(89,354)	0
Distributions to common shareholders	(21,584)	(21,550)
Proceeds from noncontrolling interest, net	587,440	0
Net cash (used in) provided by financing activities	3,777,878	(25,550)
Increase in cash, cash equivalents and restricted cash	392,032	3,313
Cash, cash equivalents and restricted cash at beginning of period	29,397	22,834
Cash, cash equivalents and restricted cash at end of period	421,429	26,147
SUPPLEMENTAL DISCLOSURES:
Interest paid	13,021	8,240
Income taxes paid	57	0
NON-CASH INVESTING ACTIVITIES:
Real estate acquired by assumption of mortgage notes payable	323,432	0
Real estate improvements accrued, not paid	821	72
NON-CASH FINANCING ACTIVITIES:
Assumption of mortgage notes payable		0
Increase in deferred financing fees	14,537	0
SUPPLEMENTAL DISCLOSURE OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents	275,075	26,147
Restricted cash	146,354	0
Total cash, cash equivalents and restricted cash shown in the statements of cash flows	$ 421,429	$ 26,147

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements of Industrial Logistics Properties Trust and its consolidated subsidiaries, or the Company, ILPT, we, us or our, are unaudited. Certain information and disclosures required by U.S. generally accepted accounting principles, or GAAP, for complete financial statements have been condensed or omitted. We believe the disclosures made are adequate to make the information presented not misleading. However, the accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes contained in our Annual Report on Form 10-K for the year ended December 31, 2021, or our 2021 Annual Report. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim period have been included. All intercompany transactions and balances with or among our consolidated subsidiaries have been eliminated. Our operating results for interim periods are not necessarily indicative of the results that may be expected for the full year. On February 25, 2022, we acquired Monmouth Real Estate Investment Corporation, or MNR, pursuant to the merger of MNR with and into one of our wholly owned subsidiaries, or the Merger, as further described below. In connection with the Merger, we entered into a new joint venture arrangement for 95 of the acquired MNR properties, including two committed, but not yet completed, property acquisitions, located in the mainland United States, in which we retained a 61% equity interest. We have determined that this joint venture is not a variable interest entity, or VIE, as defined under the Consolidation Topic of the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC, and we evaluated such entity under the voting model and concluded we should consolidate the entity. Under the voting model, we consolidate the entity if we determine that we, directly or indirectly, have greater than 50% of the voting rights and that other equity holders do not have substantive participating rights. The other joint venture investor’s interest in this consolidated entity is reflected as noncontrolling interest in our condensed consolidated financial statements. See Notes 2, 9 and 11 for further information regarding this joint venture.

Real Estate Investments

Real Estate Investments	3 Months Ended
	Mar. 31, 2022
Real Estate [Abstract]
Real Estate Investments	Real Estate Investments As of March 31, 2022, our portfolio was comprised of 412 consolidated properties containing approximately 59,736,000 rentable square feet, including 226 buildings, leasable land parcels and easements containing approximately 16,729,000 rentable square feet of primarily industrial lands located on the island of Oahu, Hawaii, or our Hawaii Properties, and 186 properties containing approximately 43,007,000 rentable square feet of industrial properties located in 38 other states, or our Mainland Properties, which includes 93 properties owned by a consolidated joint venture arrangement in which we own a 61% equity interest. As of March 31, 2022, we also owned a 22% equity interest in an unconsolidated joint venture which owns 18 properties located in 12 states totaling approximately 11,726,000 rentable square feet. We operate in one business segment: ownership and leasing of properties that include industrial and logistics buildings and leased industrial lands. For the three months ended March 31, 2022 and 2021, approximately 37.4% and 50.2%, respectively, of our rental income was from our Hawaii Properties. In addition, we have a concentration of Mainland Properties leased to FedEx Corporation and certain of its subsidiaries, or FDX, which, as of March 31, 2022, consisted of approximately 21.6% of our rentable square feet located in 34 states with a weighted average remaining lease term of 7.5 years and accounted for $13,468, or 18.9%, and $2,751, or 5.1%, of our rental income for the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022, the only other tenants that leased over 5% of our total rentable square footage were subsidiaries of Amazon.com, Inc., which accounted for $5,615, or 7.9%, and $5,538, or 10.2%, of our rental income for the three months ended March 31, 2022 and 2021, respectively. Acquisition activities On February 25, 2022, we completed the acquisition of MNR pursuant to the Agreement and Plan of Merger, dated as of November 5, 2021 and as amended on February 7, 2022, or the Merger Agreement, by and among us, Maple Delaware Merger Sub LLC, a Delaware limited liability company and our wholly owned subsidiary, or Merger Sub, and MNR. At the effective time on February 25, 2022, or the Effective Time, MNR merged with and into Merger Sub, with Merger Sub continuing as the surviving entity, and the separate existence of MNR ceased. MNR’s portfolio included 124 Class A, single tenant, net leased, e-commerce focused industrial properties containing approximately 25,745,000 rentable square feet and two committed, but not yet completed, property acquisitions. The aggregate value of the consideration paid in the Merger was $3,734,485, including the assumption of $323,432 aggregate principal amount of existing MNR mortgage debt, the repayment of $885,269 of MNR debt and the payment of certain transaction fees and expenses, net of MNR’s cash on hand, and excluding two pending property acquisitions for an aggregate purchase price of $78,843, excluding acquisition related costs. Pursuant to the terms set forth in the Merger Agreement, at the Effective Time, each share of common stock, par value $0.01 per share, of MNR that was issued and outstanding immediately prior to the Effective Time was automatically converted into the right to receive $21.00 per share in cash, or the Common Stock Consideration, and each share of 6.125% Series C Cumulative Redeemable Preferred Stock, par value $0.01 per share, of MNR, that was issued and outstanding immediately prior to the Effective Time was automatically converted into the right to receive an amount in cash equal to $25.00 plus accumulated and unpaid dividends, or the Preferred Stock Consideration. At the Effective Time, each MNR stock option and restricted stock award outstanding immediately prior to the Effective Time, whether vested or unvested, became fully vested and converted into the right to receive, in the case of stock options, the difference between the Common Stock Consideration and the exercise price and, in the case of restricted stock awards, the Common Stock Consideration. Any out-of-money stock options were canceled for no consideration. Immediately following the closing of the Merger, we entered into a joint venture arrangement with an institutional investor for 95 MNR properties, including two committed, but not yet completed, property acquisitions. The investor acquired a 39% equity interest in the joint venture from us for $587,440, and we retained the remaining 61% equity interest in the joint venture. In connection with the transaction, the joint venture assumed $323,432 aggregate principal amount of existing MNR mortgage debt secured by 11 properties and entered into a $1,400,000 floating rate CMBS loan secured by 82 properties, or the Floating Rate Loan. The Floating Rate Loan matures in March 2024, subject to three one year extension options, and requires that interest be paid at an annual rate based on the secured overnight financing rate, or SOFR, plus a premium of 2.765%. See Notes 4, 9 and 11 for more information regarding this joint venture. In connection with the closing of the Merger, we entered into a $1,385,158 bridge loan facility, secured by 109 properties not owned by the joint venture in which we retained a 61% equity interest, or the Bridge Loan. We also entered into a $700,000 fixed rate CMBS loan secured by 17 of our properties, or the Fixed Rate Loan. The Bridge Loan matures in February 2023 and requires that interest be paid at an annual rate of SOFR plus a weighted average premium of 2.919%. The Fixed Rate Loan matures in March 2032 and requires that interest be paid at a weighted average annual interest rate of 4.417%. The Floating Rate Loan, the Bridge Loan and the Fixed Rate Loan are collectively referred to as the Loans. We used the proceeds from our sale of the equity interest in our joint venture in which we retained a 61% equity interest to partially fund our acquisition of MNR. We funded our equity interest in that joint venture and the balance of the acquisition of MNR with proceeds from our Bridge Loan and our Fixed Rate Loan. In connection with the Merger and the Loans, we repaid the outstanding principal balance under our $750,000 unsecured revolving credit facility and then terminated the agreement governing the facility, which was scheduled to expire in June 2022, in accordance with its terms and without penalty. The following table summarizes the purchase price allocation for the Merger: Land $ 327,200 Buildings 2,478,047 Acquired real estate leases (1) 226,820 Assets of properties held for sale 724,073 Cash 8,814 Other assets, net 14,194 Securities available for sale (2) 146,550 Total assets 3,925,698 Mortgage notes payable, at fair value (323,432) Accounts payable and other liabilities (20,750) Assumed real estate lease obligations (14,233) Liabilities of properties held for sale (3,596) Equity attributable to noncontrolling interest on the joint venture (3,827) Net assets acquired 3,559,860 Assumed working capital (148,807) Assumed mortgage notes payable, principal 323,432 Purchase price $ 3,734,485 (1) As of the date of acquisition, the weighted average amortization periods for the above market lease values, lease origination value and capitalized below market lease values were 11.05 years, 8.50 years and 7.83 years, respectively. (2) As part of the Merger, we acquired a portfolio of marketable securities and classified them as held for sale. During the three months ended March 31, 2022, we sold securities with a cost of $114,503 for net proceeds of $115,735, resulting in a $1,232 realized gain on sale of equity securities for the three months ended March 31, 2022. As of March 31, 2022, we owned securities with a cost of $32,047 and a fair value of $34,508 resulting in a $2,460 unrealized gain on equity securities for the three months ended March 31, 2022. The securities are included in other assets, net on our condensed consolidated balance sheet as of March 31, 2022. We expect to complete the sales of these marketable securities during the second quarter of 2022. See Note 5 for more information regarding these marketable securities. During the three months ended March 31, 2022, we committed $4,772 for expenditures related to leasing related costs for leases executed during the period for approximately 885,000 square feet. Committed, but unspent, tenant related obligations based on existing leases as of March 31, 2022 were $28,700. Certain of our industrial lands in Hawaii may require environmental remediation, especially if the use of those lands is changed; however, we do not have plans to change the use of those lands. As of both March 31, 2022 and December 31, 2021, accrued environmental remediation costs of $6,940 were included in accounts payable and other liabilities in our condensed consolidated balance sheets. These accrued environmental remediation costs relate to maintenance of our properties for current uses, and, because of the indeterminable timing of the remediation, these amounts have not been discounted to present value. In general, we do not have insurance designated to limit any losses that we may incur as a result of known or unknown environmental conditions which are not caused by an insured event, such as fire or flood, although some of our tenants may maintain such insurance that may benefit us. While we do not believe that there are environmental conditions at any of our properties that will have a material adverse effect on us, we cannot be sure that such conditions are not present at our properties or that costs we incur to remediate contamination will not have a material adverse effect on our business or financial condition. Charges for environmental remediation costs, if any, are included in other operating expenses in our condensed consolidated statements of comprehensive income (loss). Disposition activities As of March 31, 2022, we classified 30 properties we acquired as part of the MNR acquisition as held for sale in our condensed consolidated balance sheet. We are currently marketing these properties for sale, which contain approximately 4,921,000 rentable square feet. We cannot be sure we will sell any properties we are marketing for prices in excess of our carrying values or that we will not recognize impairment losses or losses on sale with respect to these properties. Joint Venture Activities As of March 31, 2022, we have equity investments in our joint ventures that consist of the following: ILPT Carrying Value ILPT of Investment Number of Square Joint Venture Presentation Ownership at March 31, 2022 Properties Location Feet Mountain Industrial REIT LLC Consolidated 61% N/A 93 Various 20,754,664 The Industrial Fund REIT LLC Unconsolidated 22% $ 143,428 18 Various 11,726,000 The following table provides a summary of the mortgages of our joint ventures: Principal Balance at March 31, Joint Venture (Consolidated) Coupon Rate Maturity Date 2022 (1) Mortgage notes payable (secured by 11 properties in 10 states) 3.690% Various $ 321,650 Mortgage notes payable (secured by 82 properties in 25 states) 3.060% 3/9/2024 1,400,000 Weighted average/total 3.178% $ 1,721,650 Principal Balance at March 31, Joint Venture (Unconsolidated) Coupon Rate (2) Maturity Date 2022 (1) Mortgage notes payable (secured by one property in Florida) 3.60% 10/1/2023 $ 56,980 Mortgage notes payable (secured by 11 other properties in eight states) 3.33% 11/7/2029 350,000 Weighted average/total 3.37% $ 406,980 (1) Amounts are not adjusted for our minority interest; none of the debt is recourse to us. (2) Includes the effect of mark to market purchase accounting. Consolidated Joint Venture - Mountain Industrial REIT LLC Immediately following the closing of the Merger, we entered into a joint venture arrangement with an institutional investor for 95 of the acquired MNR properties in 27 states, including two committed, but not yet completed, property acquisitions. The investor acquired a 39% noncontrolling equity interest in the joint venture from us for $587,440, and we retained the remaining 61% equity interest in the joint venture. The joint venture assumed $323,432 aggregate principal amount of existing MNR mortgage debt on certain of the properties. We control this joint venture and therefore account for the properties on a consolidated basis in our condensed consolidated financial statements. We recognized a 39% noncontrolling interest in our condensed consolidated financial statements for the three months ended March 31, 2022. The portion of this joint venture's net loss not attributable to us, or $3,261 for the three months ended March 31, 2022, is reported as noncontrolling interest in our condensed consolidated statements of comprehensive income (loss). There were no distributions made by this joint venture during the three months ended March 31, 2022. See Notes 1, 9 and 11 for more information regarding this joint venture. Unconsolidated Joint Venture - The Industrial Fund REIT LLC As of March 31, 2022 and December 31, 2021, we also owned an interest in an unconsolidated joint venture with 18 properties in 12 states. We account for the unconsolidated joint venture under the equity method of accounting under the fair value option. During the three months ended March 31, 2022 and 2021, we recorded a change in the fair value of our investment in the unconsolidated joint venture of $1,727 and $2,581, respectively, as equity in earnings of investees in our condensed consolidated statements of comprehensive income (loss). In addition, during the three months ended March 31, 2022 and 2021, the unconsolidated joint venture made aggregate cash distributions of $1,320 and $660, respectively, to us. See Notes 5, 9 and 11 for more information regarding our joint ventures.

Leases

Leases	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Leases	Leases We are a lessor of industrial and logistics properties. Our leases provide our tenants with the contractual right to use and economically benefit from all the physical space specified in their respective leases; therefore, we have determined to evaluate our leases as lease arrangements. Our leases provide for base rent payments and may also include variable payments. Rental income from operating leases, including any payments derived by index or market-based indices, is recognized on a straight line basis over the lease term when we have determined that the collectability of substantially all of the lease payments is probable. Some of our leases have options to extend or terminate the lease exercisable at the option of our tenants, which are considered when determining the lease term. We do not include in our measurement of our lease receivables certain variable payments, including payments determined by changes in the index or market-based indices after the inception of the lease, certain tenant reimbursements and other income until the specific events that trigger the variable payments have occurred. Such payments totaled $12,380 and $9,872 for the three months ended March 31, 2022 and 2021, respectively, of which tenant reimbursements totaled $12,135 and $9,627, respectively. We increased rental income to record revenue on a straight line basis by $1,156 and $2,044 for the three months ended March 31, 2022 and 2021, respectively. Right of use asset and lease liability. In connection with our acquisition of MNR, we assumed the lease for MNR’s former corporate headquarters, which expires on December 31, 2029, and three of the properties we acquired as part of the MNR acquisition were subject to ground leases under which we are the lessee. For leases under which we are the lessee, we are required to record a right of use asset and lease liability for all leases with a term greater than 12 months. As of March 31, 2022, the value of the right of use asset and related liability representing our future obligations under the lease arrangements under which we are the lessee were $5,147 and $5,192, respectively. The right of use asset and related lease liability are included in other assets, net and accounts payable and other liabilities, respectively, in our condensed consolidated balance sheets.

Indebtedness

Indebtedness	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Indebtedness	Indebtedness As of March 31, 2022, our outstanding indebtedness consisted of the following: Net Book Value Principal Balance as of of Collateral March 31, December 31, Interest At March 31, Entity Type Secured By: 2022 (1) 2021 (1) Rate Maturity 2022 ILPT Revolving credit facility (2) Unsecured $ — $ 182,000 1.410 % N/A $ — ILPT Bridge Loan Facility 109 Properties 1,385,158 — 3.214 % Feb 2023 1,206,972 ILPT Fixed Rate - Interest only 186 Properties 650,000 650,000 4.310 % Feb 2029 490,882 ILPT Fixed Rate - Interest only 17 Properties 700,000 — 4.417 % Mar 2032 528,498 Mountain (3) Floating Rate - Interest only 82 Properties 1,400,000 — 3.060 % Mar 2024 (4) 1,946,182 Mountain (3) Fixed Rate - Amortizing One Property 13,644 — 3.670 % May 2031 31,352 Mountain (3) Fixed Rate - Amortizing One Property 27,446 — 3.100 % Jun 2035 48,843 Mountain (3) Fixed Rate - Amortizing One Property 15,585 — 3.560 % Sep 2030 51,807 Mountain (3) Fixed Rate - Amortizing One Property 45,534 — 4.130 % Nov 2033 132,174 Mountain (3) Fixed Rate - Amortizing One Property 15,032 — 4.140 % Jul 2032 45,854 Mountain (3) Fixed Rate - Amortizing One Property 32,634 — 4.020 % Oct 2033 88,253 Mountain (3) Fixed Rate - Amortizing One Property 5,290 — 3.770 % Apr 2030 40,668 Mountain (3) Fixed Rate - Amortizing One Property 5,594 — 3.850 % Apr 2030 40,668 Mountain (3) Fixed Rate - Amortizing One Property 44,042 — 2.950 % Jan 2036 103,379 Mountain (3) Fixed Rate - Amortizing One Property 47,742 — 4.270 % Nov 2037 114,816 Mountain (3) Fixed Rate - Amortizing One Property 54,012 — 3.250 % Jan 2038 118,337 Mountain (3) Fixed Rate - Amortizing One Property 15,095 — 3.760 % Oct 2028 65,064 4,456,808 832,000 $ 5,053,749 Unamortized debt issuance costs (68,383) (3,876) $ 4,388,425 $ 828,124 (1) The principal balances are the amounts stated in contracts. In accordance with GAAP, our carrying values and recorded interest expense may be different because of market conditions at the time we assumed certain of these debts. (2) In February 2022, we repaid the outstanding principal balance under our $750,000 unsecured revolving credit facility and then terminated the agreement governing the facility in accordance with its terms and without penalty. (3) Mountain is Mountain Industrial REIT LLC. (4) The Floating Rate Loan matures in March 2024, subject to three, one year extension options. Our principal debt obligations at March 31, 2022 were: (1) $1,385,158 outstanding principal amount of the Bridge Loan; (2) $1,400,000 outstanding principal amount of the Floating Rate Loan; (3) $700,000 outstanding principal amount of the Fixed Rate Loan; (4) $650,000 outstanding principal amount of a mortgage loan secured by 186 of our properties; and (5) $321,650 aggregate principal amount of mortgages secured by 11 properties owned by our consolidated joint venture in which we own a 61% equity interest. As of December 31, 2021, we had a $750,000 unsecured revolving credit facility that was available for our general business purposes, including acquisitions. The maturity date of this revolving credit facility was June 29, 2022 and had an option to extend the maturity date for one, six month period, subject to payment of extension fees and satisfaction of other conditions. As of December 31, 2021, the annual interest rate payable on borrowings under this revolving credit facility was 1.41%. The weighted average annual interest rate for borrowings under this revolving credit facility was 1.41% and 1.57% for the period from January 1, 2022 to February 25, 2022 and the three months ended 2021, respectively. In connection with the closing of the Merger, we entered into the Loans, and repaid the outstanding principal balance under this revolving credit facility and then terminated the agreement governing the facility in accordance with its terms and without penalty. During the three months ended March 31, 2022, we recorded a $828 loss on extinguishment of debt to write off any unamortized costs related to this facility. On February 25, 2022, subsidiaries of our consolidated joint venture entered into a loan agreement with Citi Real Estate Funding Inc., UBS AG, Bank of America, N.A., Bank of Montreal and Morgan Stanley Bank, N.A., or collectively, the Floating Rate Lenders, pursuant to which this joint venture obtained the Floating Rate Loan. Also on February 25, 2022, our consolidated joint venture entered into a guaranty in favor of the Floating Rate Lenders, pursuant to which this joint venture guaranteed certain limited recourse obligations of its subsidiaries with respect to the Floating Rate Loan. The Floating Rate Loan matures in March 2024, subject to three, one Also on February 25, 2022, certain of our subsidiaries entered into a loan agreement with Citibank, N.A., UBS AG, Bank of America, N.A., Bank of Montreal and Morgan Stanley Bank, N.A., or collectively, the Bridge Lenders, and a mezzanine loan agreement with an institutional lender, or the Bridge Mezz Lender, together pursuant to which we obtained the Bridge Loan. Also on February 25, 2022, we entered into a guaranty in favor of the Bridge Lenders and the Bridge Mezz Lender, pursuant to which we guaranteed certain limited recourse obligations of its subsidiaries with respect to the Bridge Loan. The Bridge Loan matures in February 2023 and requires that interest be paid at an annual rate of SOFR plus a premium of 1.75% under the loan agreement and a premium of 8.0% under the mezzanine loan agreement. As of March 31, 2022, the weighted average annual interest rate payable under our Bridge Loan was 3.214% and the weighted average annual interest rate for borrowings under the Bridge Loan was 3.143% for the period from February 25, 2022 to March 31, 2022. Also on February 25, 2022, certain of our subsidiaries entered into a loan agreement with Citi Real Estate Funding Inc., UBS AG, Bank of America, N.A., Bank of Montreal and Morgan Stanley Bank, N.A., or collectively, the Fixed Rate Lenders, and mezzanine loan agreements with Citigroup Global Markets Realty Corp., UBS AG, Bank of America, N.A., Bank of Montreal and Morgan Stanley Mortgage Capital Holdings LLC, or collectively the Fixed Mezz Lenders, pursuant to which we obtained the Fixed Rate Loan. Also on February 25, 2022, we entered into a guaranty in favor of the Fixed Rate Lenders and the Fixed Mezz Lenders, pursuant to which we guaranteed certain limited recourse obligations of our subsidiaries with respect to the Fixed Rate Loan. The Fixed Rate Loan matures in March 2032 and requires that interest be paid at a weighted average annual fixed rate of 4.417%. We used the aggregate net proceeds from the Loans to fund the acquisition of MNR. Principal payments on the Loans are not required prior to the end of the respective initial term, subject to certain conditions set forth in the applicable loan agreement. Subject to the satisfaction of certain stated conditions, we have the option under the applicable loan agreement: (1) to prepay up to $280,000 of the Floating Rate Loan after March 2023, at par with no premium, and to prepay the balance of the Floating Rate Loan at any time, subject to a premium; (2) to prepay the Bridge Loan, in full or in part at any time, subject to breakage costs; and (3) to prepay the Fixed Rate Loan in full or part at any time, subject to a premium, and beginning in September 2031, without a premium. The agreements governing the Loans contain customary covenants and provide for acceleration of payment of all amounts due thereunder upon the occurrence and continuation of certain events of default. In connection with the Merger, our consolidated joint venture in which we own a 61% equity interest assumed an aggregate $323,432 of existing MNR mortgages secured by 11 properties which are owned by this joint venture. These amortizing mortgages require monthly payments of principal and interest until maturity. The value of these mortgages approximated their estimated fair value on the date of acquisition. See Notes 2 and 5 for further information regarding our acquisition of MNR.

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities Our financial instruments include cash and cash equivalents, restricted cash, rents receivable, the Floating Rate Loan, the Bridge Loan, the Fixed Rate Loan, mortgage notes payable, accounts payable, rents collected in advance, marketable securities available for sale, interest rate caps, security deposits and amounts due from or to related persons. At March 31, 2022 and December 31, 2021, the fair value of our financial instruments approximated their carrying values in our condensed consolidated financial statements, due to their short term nature or floating interest rates, except as follows: At March 31, 2022 At December 31, 2021 Carrying Estimated Carrying Estimated Value (1) Fair Value Value (1) Fair Value Mortgage notes payable, 4.310% interest rate, due in 2029 $ 646,260 $ 653,231 $ 646,124 $ 709,198 Bridge Loan, 3.214% weighted average interest rate, due in 2023 1,356,606 1,356,606 — — Mortgage notes payable, 3.060% interest rate, due in 2024 (2) 1,369,635 1,369,635 — — Mortgage notes payable, 4.417% interest rate, due in 2032 694,274 694,274 — — Mortgage note payable, 3.670% interest rate, due in 2031 13,644 13,644 — — Mortgage note payable, 3.100% interest rate, due in 2035 27,446 27,446 — — Mortgage note payable, 3.560% interest rate, due in 2030 15,585 15,585 — — Mortgage note payable, 4.130% interest rate, due in 2033 45,534 45,534 — — Mortgage note payable, 4.140% interest rate, due in 2032 15,032 15,032 — — Mortgage note payable, 4.020% interest rate, due in 2033 32,634 32,634 — — Mortgage note payable, 3.770% interest rate, due in 2030 5,290 5,290 — — Mortgage note payable, 3.850% interest rate, due in 2030 5,594 5,594 — — Mortgage note payable, 2.950% interest rate, due in 2036 44,042 44,042 — — Mortgage note payable, 4.270% interest rate, due in 2037 47,742 47,742 — — Mortgage note payable, 3.250% interest rate, due in 2038 54,012 54,012 — — Mortgage note payable, 3.760% interest rate, due in 2028 15,095 15,095 — — $ 4,388,425 $ 4,395,396 $ 646,124 $ 709,198 (1) Includes unamortized debt issuance costs of $68,383 and $3,876 as of March 31, 2022 and December 31, 2021, respectively. (2) The Floating Rate Loan matures in March 2024, subject to three, one year extension options. We estimate the fair value of our mortgage notes payable using discounted cash flow analyses and current prevailing market rates as of the measurement date (Level 3 inputs). As Level 3 inputs are unobservable, our estimated fair value may differ materially from the actual fair value. The table below presents certain of our assets measured on a recurring basis at fair value at March 31, 2022, categorized by the level of inputs as defined in the fair value hierarchy under GAAP, used in the valuation of each asset: Quoted Prices in Significant Other Significant Active Markets for Observable Unobservable Identical Assets Inputs Inputs Total (Level 1) (Level 2) (Level 3) Recurring fair value measurements Investment in unconsolidated joint venture (1) $ 143,428 $ — $ — $ 143,428 Interest rate cap derivatives (2) $ 9,859 $ — $ 9,859 $ — Investment in marketable securities held for sale (3) $ 34,508 $ 34,508 $ — $ — (1) We own a 22% equity interest in a joint venture that owns 18 properties and is included in investment in unconsolidated joint venture in our condensed consolidated balance sheet, and is reported at fair value, which is based on significant unobservable inputs (Level 3 inputs). The significant unobservable inputs used in the fair value are discount rates of between 5.25% and 6.50%, exit capitalization rates of between 4.50% and 5.50%, direct capitalization rates of between 4.00% and 4.50%, holding periods of approximately 10 years and market rents. The assumptions are based on the location, type and nature of each property, and current and anticipated market conditions, which are derived from appraisers, industry publications and our experience. See Note 2 for further information regarding our investment in this joint venture. (2) Our derivative assets are carried at fair value as required by GAAP. The estimated fair values of the derivative assets are based on current market prices for similar instruments. Given the meaningful level of secondary market activity for derivative contracts, active pricing is available for similar assets and accordingly, we classify our derivative assets as Level 2. See Note 10 for more information regarding our derivatives and hedging activities. (3) See Note 2 for more information regarding our investments in marketable securities held for sale.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Common Share Purchase: During the three months ended March 31, 2022, we purchased 333 of our common shares at a price of $22.67 per common share, from a former employee of The RMR Group LLC, or RMR, in satisfaction of tax withholding and payment obligations in connection with the vesting of awards of our common shares. Distributions: During the three months ended March 31, 2022 , we declared and paid a regular quarterly distribution to common shareholders as follows: Record Date Payment Date Distribution Per Share Total Distribution January 24, 2022 February 17, 2022 $ 0.33 $ 21,584 On April 14, 2022, we declared a regular quarterly distribution to common shareholders of record on April 25, 2022 of $0.33 per share, or approximately $21,600. We expect to pay this distribution to our shareholders on or about May 19, 2022.

Per Common Share Amounts

Per Common Share Amounts	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Per Common Share Amounts	Per Common Share Amounts The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands): Three Months Ended March 31, 2022 2021 Weighted average common shares for basic earnings per share 65,212 65,139 Effect of dilutive securities: unvested share awards — 38 Weighted average common shares for diluted earnings per share (1) 65,212 65,177 (1) For the three months ended March 31, 2022, 18 unvested common shares were not included in the calculation of diluted earnings per share because doing so would have been antidilutive.

Business and Property Managemen

Business and Property Management Agreements with RMR	3 Months Ended
	Mar. 31, 2022
Related Party Transactions [Abstract]
Business and Property Management Agreements with RMR	Business and Property Management Agreements with RMR We have no employees. The personnel and various services we require to operate our business are provided to us by RMR. We have two agreements with RMR to provide management services to us: (1) a business management agreement, which relates to our business generally; and (2) a property management agreement, which relates to our property level operations. Pursuant to our business management agreement with RMR, we recognized net business management fees of $4,399 and $2,544 for the three months ended March 31, 2022 and 2021, respectively. Based on our common share total return, as defined in our business management agreement, as of March 31, 2022 and 2021, no incentive fees are included in the net business management fees we recognized for the three months ended March 31, 2022 or 2021. The actual amount of annual incentive fees for 2022, if any, will be based on our common share total return, as defined in our business management agreement, for the three-year period ending December 31, 2022, and will be payable in January 2023. We did not incur any incentive fee payable to RMR for the year ended December 31, 2021. We include business management fees in general and administrative expenses in our condensed consolidated statements of comprehensive income (loss). RMR provides management services to our two joint ventures. See Note 9 for further information regarding our joint ventures’ management arrangements with RMR and the related impact on our management fees payable to RMR. We and RMR amended our business management agreement effective August 1, 2021 to provide that (i) for periods beginning on and after August 1, 2021, the MSCI U.S. REIT/Industrial REIT Index will be used to calculate benchmark returns per share for purposes of determining any incentive management fee payable by us to RMR and (ii) for periods prior to August 1, 2021, the SNL U.S. REIT Industrial Index will continue to be used. This change of index was due to S&P Global ceasing to publish the SNL U.S. REIT Industrial Index. Pursuant to our property management agreement with RMR, we recognized aggregate property management and construction supervision fees of $2,763 and $1,594 for the three months ended March 31, 2022 and 2021, respectively. Of these amounts, for the three months ended March 31, 2022 and 2021, $2,098 and $1,582, respectively, were expensed to other operating expenses in our condensed consolidated financial statements and $31 and $12, respectively, were capitalized as building improvements in our condensed consolidated balance sheets. The amounts capitalized are being depreciated over the estimated useful lives of the related capital assets. We are generally responsible for all of our operating expenses, including certain expenses incurred or arranged by RMR on our behalf. We are generally not responsible for payment of RMR’s employment, office or administrative expenses incurred to provide management services to us, except for the employment and related expenses of RMR’s employees assigned to work exclusively or partly at our properties, our share of the wages, benefits and other related costs of RMR’s centralized accounting personnel, our share of RMR’s costs for providing our internal audit function, or as otherwise agreed. Our property level operating expenses are generally incorporated into the rents charged to our tenants, including certain payroll and related costs incurred by RMR. We reimbursed RMR $1,604 and $1,141 for these expenses and costs for the three months ended March 31, 2022 and 2021, respectively. These amounts are included in other operating expenses and general and administrative expenses, as applicable, in our condensed consolidated statements of comprehensive income (loss).

Related Person Transactions

Related Person Transactions	3 Months Ended
	Mar. 31, 2022
Related Party Transactions [Abstract]
Related Person Transactions	Related Person Transactions We have relationships and historical and continuing transactions with RMR, The RMR Group Inc., or RMR Inc., and others related to them, including other companies to which RMR or its subsidiaries provide management services and some of which have trustees, directors or officers who are also our Trustees or officers. RMR is a majority owned subsidiary of RMR Inc. The Chair of our Board of Trustees and one of our Managing Trustees, Adam Portnoy, is the sole trustee, an officer and the controlling shareholder of ABP Trust, which is the controlling shareholder of RMR Inc., chair of the board of directors, a managing director and the president and chief executive officer of RMR Inc. and an officer and employee of RMR. John Murray, our other Managing Trustee and our former President and Chief Executive Officer until March 31, 2022, also serves as an officer and employee of RMR, and each of our other officers is also an officer and employee of RMR. Some of our Independent Trustees also serve as independent trustees or independent directors of other public companies to which RMR or its subsidiaries provide management services. Adam Portnoy serves as chair of the boards and as a managing trustee or managing director of those companies. Other officers of RMR, including Mr. Murray and certain of our other officers, serve as managing trustees, managing directors or officers of certain of these companies. Our Manager, RMR . We have two agreements with RMR to provide management services to us. See Note 8 for further information regarding our management agreements with RMR. MNR Acquisition and Related Joint Venture . On February 25, 2022, we acquired MNR. In connection with the Merger, we entered into a new joint venture arrangement with an institutional investor for 95 of the acquired MNR properties, including two committed, but not yet completed, property acquisitions. The investor acquired a 39% equity interest in the joint venture from us for $587,440. Joint Ventures . Following the Merger, we have two separate joint venture arrangements, one with two, third party institutional investors for 18 properties in which we own a 22% equity interest, and the other with one, third party institutional investor for 95 properties, including two committed, but not yet completed, property acquisitions, in which we own a 61% equity interest. We entered into our joint venture that currently owns 18 properties prior to January 1, 2021, and we entered into the other joint venture that currently owns 95 MNR properties, including two committed, but not yet completed,property acquisitions, in February 2022 in connection with the Merger. RMR provides management services to both of these joint ventures. We do not include our 18 property joint venture as a consolidated subsidiary and, as a result, we are not obligated to pay management fees to RMR under our management agreements with RMR for the services it provides regarding that joint venture. Our 95 property joint venture is our consolidated subsidiary and, as a result, we are obligated to pay management fees to RMR under our management agreements with RMR for the services it provides regarding that joint venture; however, that joint venture pays management fees directly to RMR, and any such fees paid by that joint venture are credited against the fees payable by us to RMR. In December 2021, we sold six properties to our then existing joint venture. We received proceeds of approximately $160,516 from the other equity investors in connection with this sale. We and the other equity investors maintained our respective percentage equity interests in that joint venture following this transaction. As of December 31, 2021 and March 31, 2022, we owed $225 and $629, respectively, to that joint venture for rents that we collected on behalf of that joint venture. This amount is presented as due to related persons in our condensed consolidated balance sheet. We paid the amount we owed as of December 31, 2021 in January 2022. See Notes 2, 4, 5 and 11 for further information regarding our joint ventures. TA. In May 2021, we acquired a property located in the Dallas, Texas market from TravelCenters of America Inc., or TA, for a purchase price of $2,319, including acquisition related costs of $119. RMR provides management services to TA and Mr. Portnoy serves as the chair of the board of directors and as a managing director of TA. For further information about these and other such relationships and certain other related person transactions, see our 2021 Annual Report.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities Risk Management Objective of Using Derivatives We are exposed to certain risks relating to our ongoing business operations, including the impact of changes in interest rates. The only risk currently managed by us using derivative instruments is a part of our interest rate risk. We have an interest rate cap agreement to manage our interest rate risk exposure on each of the Bridge Loan and the Floating Rate Loan, both with interest payable at a rate equal to SOFR plus a premium. The use of derivative financial instruments carries certain risks, including the risk that the counterparties to these contractual arrangements are not able to perform under the agreements. To mitigate this risk, we only enter into derivative financial instruments with counterparties with high credit ratings and with major financial institutions with which we or our related parties may also have other financial relationships. We do not anticipate that any of the counterparties will fail to meet their obligations. Cash Flow Hedges of Interest Rate Risk As required by ASC 815, Derivatives and Hedging , we record all derivatives on the balance sheet at fair value. The following table summarizes the terms of our outstanding interest rate cap agreements designated as cash flow hedges of interest rate risk as of March 31, 2022: Interest Rate Derivative Balance Sheet Line Item Debt Number of Instruments Strike Rate Notional Amount Fair Value at March 31, 2022 Interest Rate Cap Other assets Floating Rate Loan 1 3.40% $ 1,400,000 $ 7,815 Interest Rate Cap Other assets Bridge Loan Facility 2 2.70% $ 1,385,158 $ 2,044 Interest rate caps designated as cash flow hedges involve the receipt of variable amounts from a counterparty if interest rates rise above the strike rate on the contract in exchange for an up-front premium. For derivatives designated and qualifying as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period during which the hedged transaction affects earnings. Gains and losses on the derivative representing hedge components excluded from the assessment of effectiveness are recognized over the life of the hedge on a systematic and rational basis, as documented at hedge inception in accordance with our accounting policy election. The earnings recognition of excluded components is presented in interest expense. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made on our applicable debt. Three Months Ended March 31, 2022 Balance at December 31, 2021 $ — Amount of income recognized in cumulative other comprehensive income 5,375 Amount reclassified from cumulative other comprehensive income into interest expense 257 Unrealized gain on derivative instrument $ 5,632

Noncontrolling Interest

Noncontrolling Interest	3 Months Ended
	Mar. 31, 2022
Noncontrolling Interest [Abstract]
Noncontrolling Interest	Noncontrolling Interest On February 25, 2022, we completed the acquisition of MNR. In connection with the Merger, we entered into a joint venture arrangement with an institutional investor for 95 of the acquired MNR properties, including two committed, but not yet completed, property acquisitions. The investor acquired a 39% noncontrolling equity interest in the joint venture for $587,440, and we retained the remaining 61% equity interest in the joint venture. The joint venture assumed $323,432 aggregate principal amount of existing MNR mortgage debt on certain of the properties. We control this joint venture and therefore account for the properties on a consolidated basis in our condensed consolidated financial statements. We recognized a 39% noncontrolling interest in our condensed consolidated financial statements for the three months ended March 31, 2022. The portion of this joint venture's net loss not attributable to us, or $3,261 for the three months ended March 31, 2022, is reported as noncontrolling interest in our condensed consolidated statements of comprehensive income (loss). There were no distributions made by the joint venture during the three months ended March 31, 2022. See Notes 1, 2, 4 and 5 for further information regarding this joint venture. An unrelated third party owns an approximate 33% tenancy in common interest in one of the properties we acquired as part of the MNR acquisition located in Somerset, New Jersey, and we own the remaining 67% tenancy in common interest in this property. The portion of this property’s net loss not attributable to us, or $12 for the three months ended March 31, 2022, is reported as noncontrolling interest in our condensed consolidated statements of comprehensive income (loss).

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and basis of presentation	The accompanying condensed consolidated financial statements of Industrial Logistics Properties Trust and its consolidated subsidiaries, or the Company, ILPT, we, us or our, are unaudited. Certain information and disclosures required by U.S. generally accepted accounting principles, or GAAP, for complete financial statements have been condensed or omitted. We believe the disclosures made are adequate to make the information presented not misleading. However, the accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes contained in our Annual Report on Form 10-K for the year ended December 31, 2021, or our 2021 Annual Report. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim period have been included. All intercompany transactions and balances with or among our consolidated subsidiaries have been eliminated. Our operating results for interim periods are not necessarily indicative of the results that may be expected for the full year. On February 25, 2022, we acquired Monmouth Real Estate Investment Corporation, or MNR, pursuant to the merger of MNR with and into one of our wholly owned subsidiaries, or the Merger, as further described below. In connection with the Merger, we entered into a new joint venture arrangement for 95 of the acquired MNR properties, including two committed, but not yet completed, property acquisitions, located in the mainland United States, in which we retained a 61% equity interest. We have determined that this joint venture is not a variable interest entity, or VIE, as defined under the Consolidation Topic of the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC, and we evaluated such entity under the voting model and concluded we should consolidate the entity. Under the voting model, we consolidate the entity if we determine that we, directly or indirectly, have greater than 50% of the voting rights and that other equity holders do not have substantive participating rights. The other joint venture investor’s interest in this consolidated entity is reflected as noncontrolling interest in our condensed consolidated financial statements. See Notes 2, 9 and 11 for further information regarding this joint venture.
Use of estimates	The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect reported amounts. Actual results could differ from those estimates. Significant estimates in the condensed consolidated financial statements include purchase price allocations, useful lives of fixed assets, impairments of real estate and related intangibles.
Fair value of assets and liabilities	We estimate the fair value of our mortgage notes payable using discounted cash flow analyses and current prevailing market rates as of the measurement date (Level 3 inputs). As Level 3 inputs are unobservable, our estimated fair value may differ materially from the actual fair value.

Real Estate Investments (Tables

Real Estate Investments (Tables)	3 Months Ended
	Mar. 31, 2022
Real Estate [Abstract]
Schedule of assets acquired and liabilities assumed	The following table summarizes the purchase price allocation for the Merger: Land $ 327,200 Buildings 2,478,047 Acquired real estate leases (1) 226,820 Assets of properties held for sale 724,073 Cash 8,814 Other assets, net 14,194 Securities available for sale (2) 146,550 Total assets 3,925,698 Mortgage notes payable, at fair value (323,432) Accounts payable and other liabilities (20,750) Assumed real estate lease obligations (14,233) Liabilities of properties held for sale (3,596) Equity attributable to noncontrolling interest on the joint venture (3,827) Net assets acquired 3,559,860 Assumed working capital (148,807) Assumed mortgage notes payable, principal 323,432 Purchase price $ 3,734,485 (1) As of the date of acquisition, the weighted average amortization periods for the above market lease values, lease origination value and capitalized below market lease values were 11.05 years, 8.50 years and 7.83 years, respectively. (2) As part of the Merger, we acquired a portfolio of marketable securities and classified them as held for sale. During the three months ended March 31, 2022, we sold securities with a cost of $114,503 for net proceeds of $115,735, resulting in a $1,232 realized gain on sale of equity securities for the three months ended March 31, 2022. As of March 31, 2022, we owned securities with a cost of $32,047 and a fair value of $34,508 resulting in a $2,460 unrealized gain on equity securities for the three months ended March 31, 2022. The securities are included in other assets, net on our condensed consolidated balance sheet as of March 31, 2022. We expect to complete the sales of these marketable securities during the second quarter of 2022. See Note 5 for more information regarding these marketable securities.
Summary of investment in unconsolidated joint ventures	As of March 31, 2022, we have equity investments in our joint ventures that consist of the following: ILPT Carrying Value ILPT of Investment Number of Square Joint Venture Presentation Ownership at March 31, 2022 Properties Location Feet Mountain Industrial REIT LLC Consolidated 61% N/A 93 Various 20,754,664 The Industrial Fund REIT LLC Unconsolidated 22% $ 143,428 18 Various 11,726,000
Summary of the mortgage debt of our joint venture	The following table provides a summary of the mortgages of our joint ventures: Principal Balance at March 31, Joint Venture (Consolidated) Coupon Rate Maturity Date 2022 (1) Mortgage notes payable (secured by 11 properties in 10 states) 3.690% Various $ 321,650 Mortgage notes payable (secured by 82 properties in 25 states) 3.060% 3/9/2024 1,400,000 Weighted average/total 3.178% $ 1,721,650 Principal Balance at March 31, Joint Venture (Unconsolidated) Coupon Rate (2) Maturity Date 2022 (1) Mortgage notes payable (secured by one property in Florida) 3.60% 10/1/2023 $ 56,980 Mortgage notes payable (secured by 11 other properties in eight states) 3.33% 11/7/2029 350,000 Weighted average/total 3.37% $ 406,980 (1) Amounts are not adjusted for our minority interest; none of the debt is recourse to us. (2) Includes the effect of mark to market purchase accounting.

Indebtedness (Tables)

Indebtedness (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of outstanding indebtedness	As of March 31, 2022, our outstanding indebtedness consisted of the following: Net Book Value Principal Balance as of of Collateral March 31, December 31, Interest At March 31, Entity Type Secured By: 2022 (1) 2021 (1) Rate Maturity 2022 ILPT Revolving credit facility (2) Unsecured $ — $ 182,000 1.410 % N/A $ — ILPT Bridge Loan Facility 109 Properties 1,385,158 — 3.214 % Feb 2023 1,206,972 ILPT Fixed Rate - Interest only 186 Properties 650,000 650,000 4.310 % Feb 2029 490,882 ILPT Fixed Rate - Interest only 17 Properties 700,000 — 4.417 % Mar 2032 528,498 Mountain (3) Floating Rate - Interest only 82 Properties 1,400,000 — 3.060 % Mar 2024 (4) 1,946,182 Mountain (3) Fixed Rate - Amortizing One Property 13,644 — 3.670 % May 2031 31,352 Mountain (3) Fixed Rate - Amortizing One Property 27,446 — 3.100 % Jun 2035 48,843 Mountain (3) Fixed Rate - Amortizing One Property 15,585 — 3.560 % Sep 2030 51,807 Mountain (3) Fixed Rate - Amortizing One Property 45,534 — 4.130 % Nov 2033 132,174 Mountain (3) Fixed Rate - Amortizing One Property 15,032 — 4.140 % Jul 2032 45,854 Mountain (3) Fixed Rate - Amortizing One Property 32,634 — 4.020 % Oct 2033 88,253 Mountain (3) Fixed Rate - Amortizing One Property 5,290 — 3.770 % Apr 2030 40,668 Mountain (3) Fixed Rate - Amortizing One Property 5,594 — 3.850 % Apr 2030 40,668 Mountain (3) Fixed Rate - Amortizing One Property 44,042 — 2.950 % Jan 2036 103,379 Mountain (3) Fixed Rate - Amortizing One Property 47,742 — 4.270 % Nov 2037 114,816 Mountain (3) Fixed Rate - Amortizing One Property 54,012 — 3.250 % Jan 2038 118,337 Mountain (3) Fixed Rate - Amortizing One Property 15,095 — 3.760 % Oct 2028 65,064 4,456,808 832,000 $ 5,053,749 Unamortized debt issuance costs (68,383) (3,876) $ 4,388,425 $ 828,124 (1) The principal balances are the amounts stated in contracts. In accordance with GAAP, our carrying values and recorded interest expense may be different because of market conditions at the time we assumed certain of these debts. (2) In February 2022, we repaid the outstanding principal balance under our $750,000 unsecured revolving credit facility and then terminated the agreement governing the facility in accordance with its terms and without penalty. (3) Mountain is Mountain Industrial REIT LLC. (4) The Floating Rate Loan matures in March 2024, subject to three, one year extension options.

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Schedule of carrying value and the estimated fair market value of mortgage notes payable	At March 31, 2022 and December 31, 2021, the fair value of our financial instruments approximated their carrying values in our condensed consolidated financial statements, due to their short term nature or floating interest rates, except as follows: At March 31, 2022 At December 31, 2021 Carrying Estimated Carrying Estimated Value (1) Fair Value Value (1) Fair Value Mortgage notes payable, 4.310% interest rate, due in 2029 $ 646,260 $ 653,231 $ 646,124 $ 709,198 Bridge Loan, 3.214% weighted average interest rate, due in 2023 1,356,606 1,356,606 — — Mortgage notes payable, 3.060% interest rate, due in 2024 (2) 1,369,635 1,369,635 — — Mortgage notes payable, 4.417% interest rate, due in 2032 694,274 694,274 — — Mortgage note payable, 3.670% interest rate, due in 2031 13,644 13,644 — — Mortgage note payable, 3.100% interest rate, due in 2035 27,446 27,446 — — Mortgage note payable, 3.560% interest rate, due in 2030 15,585 15,585 — — Mortgage note payable, 4.130% interest rate, due in 2033 45,534 45,534 — — Mortgage note payable, 4.140% interest rate, due in 2032 15,032 15,032 — — Mortgage note payable, 4.020% interest rate, due in 2033 32,634 32,634 — — Mortgage note payable, 3.770% interest rate, due in 2030 5,290 5,290 — — Mortgage note payable, 3.850% interest rate, due in 2030 5,594 5,594 — — Mortgage note payable, 2.950% interest rate, due in 2036 44,042 44,042 — — Mortgage note payable, 4.270% interest rate, due in 2037 47,742 47,742 — — Mortgage note payable, 3.250% interest rate, due in 2038 54,012 54,012 — — Mortgage note payable, 3.760% interest rate, due in 2028 15,095 15,095 — — $ 4,388,425 $ 4,395,396 $ 646,124 $ 709,198 (1) Includes unamortized debt issuance costs of $68,383 and $3,876 as of March 31, 2022 and December 31, 2021, respectively. (2) The Floating Rate Loan matures in March 2024, subject to three, one year extension options.
Fair Value Measurements, Recurring and Nonrecurring	The table below presents certain of our assets measured on a recurring basis at fair value at March 31, 2022, categorized by the level of inputs as defined in the fair value hierarchy under GAAP, used in the valuation of each asset: Quoted Prices in Significant Other Significant Active Markets for Observable Unobservable Identical Assets Inputs Inputs Total (Level 1) (Level 2) (Level 3) Recurring fair value measurements Investment in unconsolidated joint venture (1) $ 143,428 $ — $ — $ 143,428 Interest rate cap derivatives (2) $ 9,859 $ — $ 9,859 $ — Investment in marketable securities held for sale (3) $ 34,508 $ 34,508 $ — $ — (1) We own a 22% equity interest in a joint venture that owns 18 properties and is included in investment in unconsolidated joint venture in our condensed consolidated balance sheet, and is reported at fair value, which is based on significant unobservable inputs (Level 3 inputs). The significant unobservable inputs used in the fair value are discount rates of between 5.25% and 6.50%, exit capitalization rates of between 4.50% and 5.50%, direct capitalization rates of between 4.00% and 4.50%, holding periods of approximately 10 years and market rents. The assumptions are based on the location, type and nature of each property, and current and anticipated market conditions, which are derived from appraisers, industry publications and our experience. See Note 2 for further information regarding our investment in this joint venture. (2) Our derivative assets are carried at fair value as required by GAAP. The estimated fair values of the derivative assets are based on current market prices for similar instruments. Given the meaningful level of secondary market activity for derivative contracts, active pricing is available for similar assets and accordingly, we classify our derivative assets as Level 2. See Note 10 for more information regarding our derivatives and hedging activities. (3) See Note 2 for more information regarding our investments in marketable securities held for sale.

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Schedule of distributions declared and paid	During the three months ended March 31, 2022 , we declared and paid a regular quarterly distribution to common shareholders as follows: Record Date Payment Date Distribution Per Share Total Distribution January 24, 2022 February 17, 2022 $ 0.33 $ 21,584

Per Common Share Amounts (Table

Per Common Share Amounts (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Schedule of weighted average number of shares	The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands): Three Months Ended March 31, 2022 2021 Weighted average common shares for basic earnings per share 65,212 65,139 Effect of dilutive securities: unvested share awards — 38 Weighted average common shares for diluted earnings per share (1) 65,212 65,177 (1) For the three months ended March 31, 2022, 18 unvested common shares were not included in the calculation of diluted earnings per share because doing so would have been antidilutive.

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of interest rate swap derivatives	The following table summarizes the terms of our outstanding interest rate cap agreements designated as cash flow hedges of interest rate risk as of March 31, 2022: Interest Rate Derivative Balance Sheet Line Item Debt Number of Instruments Strike Rate Notional Amount Fair Value at March 31, 2022 Interest Rate Cap Other assets Floating Rate Loan 1 3.40% $ 1,400,000 $ 7,815 Interest Rate Cap Other assets Bridge Loan Facility 2 2.70% $ 1,385,158 $ 2,044
Schedule of effects on consolidated statements of income and comprehensive income	Three Months Ended March 31, 2022 Balance at December 31, 2021 $ — Amount of income recognized in cumulative other comprehensive income 5,375 Amount reclassified from cumulative other comprehensive income into interest expense 257 Unrealized gain on derivative instrument $ 5,632

Basis of Presentation - Narrati

Basis of Presentation - Narrative (Details) - MNR - property	Feb. 25, 2022	Mar. 31, 2022
Variable Interest Entity [Line Items]
Number of properties acquired	95
Number of properties acquired but aren't yet completed	2
Equity interest in joint venture	61.00%	61.00%

Real Estate Investments - Narra

Real Estate Investments - Narrative (Details) $ / shares in Units, ft² in Thousands	Feb. 25, 2022USD ($)ft²property$ / shares	Mar. 31, 2022USD ($)ft²statepropertybuilding$ / shares	Feb. 25, 2022USD ($)ft²property$ / shares	Mar. 31, 2022USD ($)ft²statepropertyoptionsegmentbuilding$ / shares	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)statepropertyoption$ / shares
Real Estate Properties [Line Items]
Number of properties owned | property		412		412
Net rentable area | ft²		59,736		59,736
Number of business segments | segment				1
Rental income				$ 71,375,000	$ 54,217,000
Common shares, par value (in dollars per share) | $ / shares		$ 0.01		$ 0.01		$ 0.01
Debt outstanding		$ 4,388,425,000		$ 4,388,425,000		$ 828,124,000
Commitments related to tenant improvements and leasing costs				$ 4,772,000
Net rentable area | ft²		885		885
Committed bus unspent tenant related obligations		$ 28,700,000		$ 28,700,000
Accrued environmental remediation costs		$ 6,940,000		6,940,000		$ 6,940,000
Net loss attributable to noncontrolling interest				3,273,000	0
Equity in earnings of investees				1,727,000	2,581,000
Unconsolidated joint venture distributions				$ 1,320,000	$ 660,000
MNR
Real Estate Properties [Line Items]
Number of states where real estate is located | property	27		27
Equity interest in joint venture	61.00%	61.00%	61.00%	61.00%
Number of properties acquired but aren't yet completed | property	2		2
Purchase price	$ 3,734,485,000
Repayments of debt	885,269,000
Purchase price of properties acquired but not yet completed	$ 78,843,000
Number of properties acquired | property	95
Net loss attributable to noncontrolling interest				$ 3,261,000
Assumed mortgage notes payable, principal	$ 323,432,000
MNR
Real Estate Properties [Line Items]
Noncontrolling interest ownership percentage	39.00%		39.00%
Mountain Industrial REIT LLC
Real Estate Properties [Line Items]
Noncontrolling interest ownership percentage	39.00%		39.00%
Mountain Industrial REIT LLC | Co-venturer
Real Estate Properties [Line Items]
Noncontrolling interest ownership percentage	39.00%		39.00%
Noncontrolling interest in joint ventures	$ 587,440,000		$ 587,440,000
Series C Cumulative Redeemable Preferred Stock, 6.125% | MNR
Real Estate Properties [Line Items]
Preferred stock par value per share (in dollars per share) | $ / shares	$ 0.01		$ 0.01
Preferred stock dividend rate	6.125%
Right to receive cash plus accumulated and unpaid dividends (in dollars per share) | $ / shares	$ 25		25
Common shares | MNR
Real Estate Properties [Line Items]
Right to receive cash (in dollars per share) | $ / shares	$ 21		$ 21
MNR | MNR
Real Estate Properties [Line Items]
Net rentable area | ft²	25,745		25,745
Number of properties | property	124		124
MNR | Common shares | MNR
Real Estate Properties [Line Items]
Common shares, par value (in dollars per share) | $ / shares	$ 0.01		$ 0.01
Disposal Group, Held-for-sale, Not Discontinued Operations | MNR
Real Estate Properties [Line Items]
Net rentable area | ft²		4,921		4,921
Number of properties | property		30		30
Floating Rate Loan
Real Estate Properties [Line Items]
Number of properties used as collateral | property	82
Debt outstanding		$ 1,400,000,000		$ 1,400,000,000
Number of options to extend maturity date | option				3
Extension of maturity date				1 year
Weighted average interest rate (as a percent)		3.011%		3.06%
Floating Rate Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Real Estate Properties [Line Items]
Basis spread on variable rate	2.25%			2.765%
Bridge Loan, 3.214% weighted average interest rate, due in 2023
Real Estate Properties [Line Items]
Number of properties used as collateral | property	109
Debt outstanding	$ 1,385,158,000	$ 1,385,158,000	$ 1,385,158,000	$ 1,385,158,000
Weighted average interest rate (as a percent)				2.919%
Bridge Loan, 3.214% weighted average interest rate, due in 2023 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Real Estate Properties [Line Items]
Basis spread on variable rate	1.75%
Weighted average interest rate (as a percent)		3.143%
Fixed Rate Loan
Real Estate Properties [Line Items]
Number of properties used as collateral | property	17
Debt outstanding		$ 700,000,000		$ 700,000,000
Weighted average interest rate (as a percent)				4.417%
Revolving credit facility
Real Estate Properties [Line Items]
Number of options to extend maturity date | option						1
Extension of maturity date						6 months
Weighted average interest rate (as a percent)			1.41%		1.57%
Maximum borrowing capacity of revolving credit facility and term loan	$ 750,000	$ 750,000,000	$ 750,000	$ 750,000,000
Joint Venture | MNR
Real Estate Properties [Line Items]
Number of properties used as collateral | property	11
Assumed mortgage notes payable, principal	$ 323,432,000
Amazon Inc Subsidiaries
Real Estate Properties [Line Items]
Rental income				$ 5,615,000	$ 5,538,000
FedEx Corporation
Real Estate Properties [Line Items]
Number of leases are located in | state		34		34
Remaining lease contractual term				7 years 6 months
Rental income				$ 13,468,000	$ 2,751,000
Sales Revenue, Net | Customer Concentration Risk | Amazon Inc Subsidiaries
Real Estate Properties [Line Items]
Concentration risk				7.90%	10.20%
Sales Revenue, Net | Customer Concentration Risk | FedEx Corporation
Real Estate Properties [Line Items]
Concentration risk				18.90%	5.10%
Rentable Square Foot | Customer Concentration Risk | FedEx Corporation
Real Estate Properties [Line Items]
Concentration risk				21.60%
Hawaii
Real Estate Properties [Line Items]
Net rentable area | ft²		16,729		16,729
Number of buildings, leasable land parcels easements | building		226		226
Hawaii | Sales Revenue, Net | Geographic Concentration Risk
Real Estate Properties [Line Items]
Concentration risk				37.40%	50.20%
Other States
Real Estate Properties [Line Items]
Number of properties owned | property		186		186
Net rentable area | ft²		43,007		43,007
Number of states where real estate is located | state		38		38
Twelve Mainland Properties
Real Estate Properties [Line Items]
Net rentable area | ft²		11,726		11,726
Number of states where real estate is located | state		12		12
Equity interest in joint venture		22.00%		22.00%
Number of properties contributed | property		18		18		18
Change in fair value of investment in joint venture				$ 1,727,000
Cash distributions				$ 1,320,000
Mainland Properties | Consolidated Joint Venture
Real Estate Properties [Line Items]
Number of properties owned | property		93		93
Equity interest in joint venture		61.00%		61.00%
The Industrial Fund REIT LLC
Real Estate Properties [Line Items]
Number of states where real estate is located | state		12		12		12
Number of properties contributed | property		18		18		18

Real Estate Investments - Purch

Real Estate Investments - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Feb. 25, 2022	Mar. 31, 2022	Mar. 31, 2021
Asset Acquisition [Line Items]
Realized gain on sale of equity securities		$ 1,232	$ 0
Unrealized gain on equity securities		2,460	$ 0
MNR
Asset Acquisition [Line Items]
Land	$ 327,200
Buildings	2,478,047
Acquired real estate leases	226,820
Assets of properties held for sale	724,073
Cash	8,814
Other assets, net	14,194
Securities available for sale (2)	146,550
Total assets	3,925,698
Mortgage notes payable, at fair value	(323,432)
Accounts payable and other liabilities	(20,750)
Assumed real estate lease obligations	(14,233)
Liabilities of properties held for sale	(3,596)
Equity attributable to noncontrolling interest on the joint venture	(3,827)
Net assets acquired	3,559,860
Assumed working capital	(148,807)
Assumed mortgage notes payable, principal	323,432
Purchase price	$ 3,734,485
Cost of marketable securities sold		114,503
Proceeds from sale of marketable securities		115,735
Investment in marketable securities held for sale		32,047
Fair Value, Recurring | MNR
Asset Acquisition [Line Items]
Investment in marketable securities held for sale		$ 34,508
Above Market Leases | MNR
Asset Acquisition [Line Items]
Weighted average useful life	11 years 18 days
Lease Origination Value | MNR
Asset Acquisition [Line Items]
Weighted average useful life	8 years 6 months
Capitalized Below Market Lease | MNR
Asset Acquisition [Line Items]
Weighted average useful life	7 years 9 months 29 days

Real Estate Investments - Joint

Real Estate Investments - Joint Venture Activities (Details) $ in Thousands	Mar. 31, 2022USD ($)ft²propertystate	Dec. 31, 2021USD ($)stateproperty
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated joint venture | $	$ 143,428	$ 143,021
Net rentable area | ft²	59,736,000
Twelve Mainland Properties
Schedule of Equity Method Investments [Line Items]
Equity interest in joint venture	22.00%
Number of properties contributed | property	18	18
Number of states where real estate is located | state	12
Net rentable area | ft²	11,726,000
The Industrial Fund REIT LLC
Schedule of Equity Method Investments [Line Items]
Number of properties contributed | property	18	18
Number of states where real estate is located | state	12	12
The Industrial Fund REIT LLC | Joint Venture
Schedule of Equity Method Investments [Line Items]
Equity interest in joint venture	22.00%
Investment in unconsolidated joint venture | $	$ 143,428
Number of properties contributed | property	18
Net rentable area | ft²	11,726,000
Mountain Industrial REIT LLC | Consolidated Joint Venture
Schedule of Equity Method Investments [Line Items]
Equity interest in joint venture	61.00%
Number of properties contributed | property	93
Net rentable area | ft²	20,754,664

Real Estate Investments - Joi_2

Real Estate Investments - Joint Venture Indebtedness (Details) $ in Thousands	Mar. 31, 2022USD ($)propertystate	Dec. 31, 2021USD ($)
Schedule of Equity Method Investments [Line Items]
Principal Balance	$ 4,456,808	$ 832,000
Consolidated Joint Venture
Schedule of Equity Method Investments [Line Items]
Interest rate (as a percent)	3.178%
Principal Balance	$ 1,721,650
Mortgage note payable | Mortgage notes payable (secured by 11 properties in 10 states) | Consolidated Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of properties | property	11
Number of states where real estate is located | state	10
Interest rate (as a percent)	369.00%
Principal Balance	$ 321,650
Mortgage note payable | Mortgage notes payable (secured by 82 properties in 25 states) | Consolidated Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of properties | property	82
Number of states where real estate is located | state	25
Interest rate (as a percent)	306.00%
Principal Balance	$ 1,400,000
Twelve Mainland Properties
Schedule of Equity Method Investments [Line Items]
Number of states where real estate is located | state	12
Twelve Mainland Properties | Joint Venture
Schedule of Equity Method Investments [Line Items]
Interest rate (as a percent)	3.37%
Principal Balance	$ 406,980
Twelve Mainland Properties | Mortgage note payable | Mortgage note payable (secured by one property in Florida) | Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of properties | property	1
Interest rate (as a percent)	360.00%
Principal Balance	$ 56,980
Twelve Mainland Properties | Mortgage note payable | Mortgage note payable (secured by 11 other properties in eight states) | Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of properties | property	11
Number of states where real estate is located | state	8
Interest rate (as a percent)	333.00%
Principal Balance	$ 350,000

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Leases [Abstract]
Certain variable payments	$ 12,380	$ 9,872
Tenant reimbursements	12,135	9,627
Straight line rental income	1,156	$ 2,044
Right-of-use asset	5,147
Operating lease liability	$ 5,192

Indebtedness - Summary of Outst

Indebtedness - Summary of Outstanding Indebtedness (Details) - USD ($) $ in Thousands	1 Months Ended
	Feb. 28, 2022	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal Balance		$ 4,456,808	$ 832,000
Unamortized debt issuance costs		(68,383)	(3,876)
Carrying value		4,388,425	828,124
Net Book Value of Collateral		$ 5,053,749
Mortgage notes payable, 3.060% interest rate, due in 2024 (2)
Debt Instrument [Line Items]
Interest Rate		3.06%
Mortgage note payable, 3.670% interest rate, due in 2031
Debt Instrument [Line Items]
Interest Rate		3.67%
Mortgage note payable, 3.100% interest rate, due in 2035
Debt Instrument [Line Items]
Interest Rate		3.10%
Mortgage note payable, 3.560% interest rate, due in 2030
Debt Instrument [Line Items]
Interest Rate		3.56%
Mortgage note payable, 4.130% interest rate, due in 2033
Debt Instrument [Line Items]
Interest Rate		4.13%
Mortgage note payable, 4.020% interest rate, due in 2033
Debt Instrument [Line Items]
Interest Rate		4.02%
Mortgage note payable, 3.770% interest rate, due in 2030
Debt Instrument [Line Items]
Interest Rate		3.77%
Mortgage note payable, 3.850% interest rate, due in 2030
Debt Instrument [Line Items]
Interest Rate		3.85%
Mortgage note payable, 2.950% interest rate, due in 2036
Debt Instrument [Line Items]
Interest Rate		2.95%
Mortgage note payable, 4.270% interest rate, due in 2037
Debt Instrument [Line Items]
Interest Rate		4.27%
Mortgage note payable, 3.250% interest rate, due in 2038
Debt Instrument [Line Items]
Interest Rate		3.25%
Mortgage note payable, 3.760% interest rate, due in 2028
Debt Instrument [Line Items]
Interest Rate		3.76%
Revolving credit facility
Debt Instrument [Line Items]
Principal Balance		$ 0	182,000
Net Book Value of Collateral		$ 0
Interest Rate		1.41%
Repayments of lines of credit	$ 750,000
Mortgage note payable | Mortgage note payable (secured by one property in Florida)
Debt Instrument [Line Items]
Principal Balance		$ 1,385,158	0
Net Book Value of Collateral		$ 1,206,972
Interest Rate		3.214%
Mortgage note payable | Mortgage Note Payable, 4.31%, due in 2029
Debt Instrument [Line Items]
Principal Balance		$ 650,000	650,000
Net Book Value of Collateral		$ 490,882
Interest Rate		4.31%
Mortgage note payable | Mortgage Note Payable, 4.417%, due in 2032
Debt Instrument [Line Items]
Principal Balance		$ 700,000	0
Net Book Value of Collateral		$ 528,498
Interest Rate		4.417%
Mortgage note payable | Mortgage notes payable, 3.060% interest rate, due in 2024 (2)
Debt Instrument [Line Items]
Principal Balance		$ 1,400,000	0
Net Book Value of Collateral		$ 1,946,182
Interest Rate		3.06%
Mortgage note payable | Mortgage note payable, 3.670% interest rate, due in 2031
Debt Instrument [Line Items]
Principal Balance		$ 13,644	0
Net Book Value of Collateral		$ 31,352
Interest Rate		3.67%
Mortgage note payable | Mortgage note payable, 3.100% interest rate, due in 2035
Debt Instrument [Line Items]
Principal Balance		$ 27,446	0
Net Book Value of Collateral		$ 48,843
Interest Rate		3.10%
Mortgage note payable | Mortgage note payable, 3.560% interest rate, due in 2030
Debt Instrument [Line Items]
Principal Balance		$ 15,585	0
Net Book Value of Collateral		$ 51,807
Interest Rate		3.56%
Mortgage note payable | Mortgage note payable, 4.130% interest rate, due in 2033
Debt Instrument [Line Items]
Principal Balance		$ 45,534	0
Net Book Value of Collateral		$ 132,174
Interest Rate		4.13%
Mortgage note payable | Mortgage Note Payable, 4.140%, due in 2032
Debt Instrument [Line Items]
Principal Balance		$ 15,032	0
Net Book Value of Collateral		$ 45,854
Interest Rate		4.14%
Mortgage note payable | Mortgage note payable, 4.020% interest rate, due in 2033
Debt Instrument [Line Items]
Principal Balance		$ 32,634	0
Net Book Value of Collateral		$ 88,253
Interest Rate		4.02%
Mortgage note payable | Mortgage note payable, 3.770% interest rate, due in 2030
Debt Instrument [Line Items]
Principal Balance		$ 5,290	0
Net Book Value of Collateral		$ 40,668
Interest Rate		3.77%
Mortgage note payable | Mortgage note payable, 3.850% interest rate, due in 2030
Debt Instrument [Line Items]
Principal Balance		$ 5,594	0
Net Book Value of Collateral		$ 40,668
Interest Rate		3.85%
Mortgage note payable | Mortgage note payable, 2.950% interest rate, due in 2036
Debt Instrument [Line Items]
Principal Balance		$ 44,042	0
Net Book Value of Collateral		$ 103,379
Interest Rate		2.95%
Mortgage note payable | Mortgage note payable, 4.270% interest rate, due in 2037
Debt Instrument [Line Items]
Principal Balance		$ 47,742	0
Net Book Value of Collateral		$ 114,816
Interest Rate		4.27%
Mortgage note payable | Mortgage note payable, 3.250% interest rate, due in 2038
Debt Instrument [Line Items]
Principal Balance		$ 54,012	0
Net Book Value of Collateral		$ 118,337
Interest Rate		3.25%
Mortgage note payable | Mortgage note payable, 3.760% interest rate, due in 2028
Debt Instrument [Line Items]
Principal Balance		$ 15,095	$ 0
Net Book Value of Collateral		$ 65,064
Interest Rate		3.76%

Indebtedness - Narrative (Detai

Indebtedness - Narrative (Details)	Feb. 25, 2022USD ($)property	Mar. 31, 2022USD ($)	Feb. 25, 2022USD ($)property	Mar. 31, 2022USD ($)propertyoption	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)option
Debt Instrument [Line Items]
Debt outstanding		$ 4,388,425,000		$ 4,388,425,000		$ 828,124,000
Loss on early extinguishment of debt				$ (828,000)	$ 0
MNR
Debt Instrument [Line Items]
Number of real estate buildings collateralized | property	11		11
Assumed mortgage notes payable, principal	$ 323,432,000
Equity interest in joint venture	61.00%	61.00%	61.00%	61.00%
Mountain Industrial REIT LLC
Debt Instrument [Line Items]
Noncontrolling interest, ownership percentage by parent	61.00%		61.00%
Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity of revolving credit facility and term loan	$ 750,000	$ 750,000,000	$ 750,000	$ 750,000,000
Number of options to extend maturity date | option						1
Extension of maturity date						6 months
Interest rate at the end of the period (as a percent)						1.41%
Weighted average interest rate (as a percent)			1.41%		1.57%
Mortgage note payable | Consolidated Joint Venture
Debt Instrument [Line Items]
Debt outstanding		321,650,000		$ 321,650,000
Number of properties used as collateral | property				11
Bridge Loan, 3.214% weighted average interest rate, due in 2023
Debt Instrument [Line Items]
Debt outstanding	$ 1,385,158,000	$ 1,385,158,000	$ 1,385,158,000	$ 1,385,158,000
Number of properties used as collateral | property	109
Weighted average interest rate (as a percent)				2.919%
Bridge Loan, 3.214% weighted average interest rate, due in 2023 | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Interest rate at the end of the period (as a percent)		3.214%		3.214%
Weighted average interest rate (as a percent)		3.143%
Basis spread on variable rate	1.75%
Mezzanine agreement premium	8.00%		8.00%
Floating Rate Loan
Debt Instrument [Line Items]
Debt outstanding		$ 1,400,000,000		$ 1,400,000,000
Number of properties used as collateral | property	82
Number of options to extend maturity date | option				3
Extension of maturity date				1 year
Weighted average interest rate (as a percent)		3.011%		3.06%
Prepayment terms without premium amount	$ 280,000		$ 280,000
Floating Rate Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Option to increase in premium (in basis points)		0.515%		0.515%
Basis spread on variable rate	2.25%			2.765%
Fixed Rate Loan
Debt Instrument [Line Items]
Debt outstanding		$ 700,000,000		$ 700,000,000
Number of properties used as collateral | property	17
Weighted average interest rate (as a percent)				4.417%
Mortgage Notes Secured By 186 Properties
Debt Instrument [Line Items]
Debt outstanding		$ 650,000		$ 650,000
Number of properties used as collateral | property				186

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value of Financial Instruments
Mortgage notes payable, net	$ 3,031,819	$ 646,124
Bridge Loan	$ 1,356,606	0
Mortgage notes payable, 4.310% interest rate, due in 2029
Fair Value of Financial Instruments
Interest Rate	4.31%
Bridge Loan, 3.214% weighted average interest rate, due in 2023
Fair Value of Financial Instruments
Weighted average interest rate	3.214%
Mortgage notes payable, 3.060% interest rate, due in 2024 (2)
Fair Value of Financial Instruments
Interest Rate	3.06%
Mortgage notes payable, 4.417% interest rate, due in 2032
Fair Value of Financial Instruments
Interest Rate	4.417%
Mortgage note payable, 3.670% interest rate, due in 2031
Fair Value of Financial Instruments
Interest Rate	3.67%
Mortgage note payable, 3.100% interest rate, due in 2035
Fair Value of Financial Instruments
Interest Rate	3.10%
Mortgage note payable, 3.560% interest rate, due in 2030
Fair Value of Financial Instruments
Interest Rate	3.56%
Mortgage note payable, 4.130% interest rate, due in 2033
Fair Value of Financial Instruments
Interest Rate	4.13%
Mortgage note payable, 4.140% interest rate, due in 2032
Fair Value of Financial Instruments
Interest Rate	4.14%
Mortgage note payable, 4.020% interest rate, due in 2033
Fair Value of Financial Instruments
Interest Rate	4.02%
Mortgage note payable, 3.770% interest rate, due in 2030
Fair Value of Financial Instruments
Interest Rate	3.77%
Mortgage note payable, 3.850% interest rate, due in 2030
Fair Value of Financial Instruments
Interest Rate	3.85%
Mortgage note payable, 2.950% interest rate, due in 2036
Fair Value of Financial Instruments
Interest Rate	2.95%
Mortgage note payable, 4.270% interest rate, due in 2037
Fair Value of Financial Instruments
Interest Rate	4.27%
Mortgage note payable, 3.250% interest rate, due in 2038
Fair Value of Financial Instruments
Interest Rate	3.25%
Mortgage note payable, 3.760% interest rate, due in 2028
Fair Value of Financial Instruments
Interest Rate	3.76%
Carrying Value
Fair Value of Financial Instruments
Bridge Loan	$ 1,356,606	0
Long-Term Debt	4,388,425	646,124
Carrying Value | Mortgage notes payable, 4.310% interest rate, due in 2029
Fair Value of Financial Instruments
Mortgage notes payable, net	646,260	646,124
Carrying Value | Mortgage notes payable, 3.060% interest rate, due in 2024 (2)
Fair Value of Financial Instruments
Mortgage notes payable, net	1,369,635	0
Carrying Value | Mortgage notes payable, 4.417% interest rate, due in 2032
Fair Value of Financial Instruments
Mortgage notes payable, net	694,274	0
Carrying Value | Mortgage note payable, 3.670% interest rate, due in 2031
Fair Value of Financial Instruments
Mortgage notes payable, net	13,644	0
Carrying Value | Mortgage note payable, 3.100% interest rate, due in 2035
Fair Value of Financial Instruments
Mortgage notes payable, net	27,446	0
Carrying Value | Mortgage note payable, 3.560% interest rate, due in 2030
Fair Value of Financial Instruments
Mortgage notes payable, net	15,585	0
Carrying Value | Mortgage note payable, 4.130% interest rate, due in 2033
Fair Value of Financial Instruments
Mortgage notes payable, net	45,534	0
Carrying Value | Mortgage note payable, 4.140% interest rate, due in 2032
Fair Value of Financial Instruments
Mortgage notes payable, net	15,032	0
Carrying Value | Mortgage note payable, 4.020% interest rate, due in 2033
Fair Value of Financial Instruments
Mortgage notes payable, net	32,634	0
Carrying Value | Mortgage note payable, 3.770% interest rate, due in 2030
Fair Value of Financial Instruments
Mortgage notes payable, net	5,290	0
Carrying Value | Mortgage note payable, 3.850% interest rate, due in 2030
Fair Value of Financial Instruments
Mortgage notes payable, net	5,594	0
Carrying Value | Mortgage note payable, 2.950% interest rate, due in 2036
Fair Value of Financial Instruments
Mortgage notes payable, net	44,042	0
Carrying Value | Mortgage note payable, 4.270% interest rate, due in 2037
Fair Value of Financial Instruments
Mortgage notes payable, net	47,742	0
Carrying Value | Mortgage note payable, 3.250% interest rate, due in 2038
Fair Value of Financial Instruments
Mortgage notes payable, net	54,012	0
Carrying Value | Mortgage note payable, 3.760% interest rate, due in 2028
Fair Value of Financial Instruments
Mortgage notes payable, net	15,095	0
Estimated Fair Value
Fair Value of Financial Instruments
Bridge Loan	1,356,606	0
Long-Term Debt	4,395,396	709,198
Estimated Fair Value | Mortgage notes payable, 4.310% interest rate, due in 2029
Fair Value of Financial Instruments
Mortgage notes payable, net	653,231	709,198
Estimated Fair Value | Mortgage notes payable, 3.060% interest rate, due in 2024 (2)
Fair Value of Financial Instruments
Mortgage notes payable, net	1,369,635	0
Estimated Fair Value | Mortgage notes payable, 4.417% interest rate, due in 2032
Fair Value of Financial Instruments
Mortgage notes payable, net	694,274	0
Estimated Fair Value | Mortgage note payable, 3.670% interest rate, due in 2031
Fair Value of Financial Instruments
Mortgage notes payable, net	13,644	0
Estimated Fair Value | Mortgage note payable, 3.100% interest rate, due in 2035
Fair Value of Financial Instruments
Mortgage notes payable, net	27,446	0
Estimated Fair Value | Mortgage note payable, 3.560% interest rate, due in 2030
Fair Value of Financial Instruments
Mortgage notes payable, net	15,585	0
Estimated Fair Value | Mortgage note payable, 4.130% interest rate, due in 2033
Fair Value of Financial Instruments
Mortgage notes payable, net	45,534	0
Estimated Fair Value | Mortgage note payable, 4.140% interest rate, due in 2032
Fair Value of Financial Instruments
Mortgage notes payable, net	15,032	0
Estimated Fair Value | Mortgage note payable, 4.020% interest rate, due in 2033
Fair Value of Financial Instruments
Mortgage notes payable, net	32,634	0
Estimated Fair Value | Mortgage note payable, 3.770% interest rate, due in 2030
Fair Value of Financial Instruments
Mortgage notes payable, net	5,290	0
Estimated Fair Value | Mortgage note payable, 3.850% interest rate, due in 2030
Fair Value of Financial Instruments
Mortgage notes payable, net	5,594	0
Estimated Fair Value | Mortgage note payable, 2.950% interest rate, due in 2036
Fair Value of Financial Instruments
Mortgage notes payable, net	44,042	0
Estimated Fair Value | Mortgage note payable, 4.270% interest rate, due in 2037
Fair Value of Financial Instruments
Mortgage notes payable, net	47,742	0
Estimated Fair Value | Mortgage note payable, 3.250% interest rate, due in 2038
Fair Value of Financial Instruments
Mortgage notes payable, net	54,012	0
Estimated Fair Value | Mortgage note payable, 3.760% interest rate, due in 2028
Fair Value of Financial Instruments
Mortgage notes payable, net	15,095	0
Mortgage note payable
Fair Value of Financial Instruments
Unamortized premium	$ 68,383	$ 3,876
Mortgage note payable | Mortgage notes payable, 3.060% interest rate, due in 2024 (2)
Fair Value of Financial Instruments
Interest Rate	3.06%
Mortgage note payable | Mortgage note payable, 3.670% interest rate, due in 2031
Fair Value of Financial Instruments
Interest Rate	3.67%
Mortgage note payable | Mortgage note payable, 3.100% interest rate, due in 2035
Fair Value of Financial Instruments
Interest Rate	3.10%
Mortgage note payable | Mortgage note payable, 3.560% interest rate, due in 2030
Fair Value of Financial Instruments
Interest Rate	3.56%
Mortgage note payable | Mortgage note payable, 4.130% interest rate, due in 2033
Fair Value of Financial Instruments
Interest Rate	4.13%
Mortgage note payable | Mortgage note payable, 4.020% interest rate, due in 2033
Fair Value of Financial Instruments
Interest Rate	4.02%
Mortgage note payable | Mortgage note payable, 3.770% interest rate, due in 2030
Fair Value of Financial Instruments
Interest Rate	3.77%
Mortgage note payable | Mortgage note payable, 3.850% interest rate, due in 2030
Fair Value of Financial Instruments
Interest Rate	3.85%
Mortgage note payable | Mortgage note payable, 2.950% interest rate, due in 2036
Fair Value of Financial Instruments
Interest Rate	2.95%
Mortgage note payable | Mortgage note payable, 4.270% interest rate, due in 2037
Fair Value of Financial Instruments
Interest Rate	4.27%
Mortgage note payable | Mortgage note payable, 3.250% interest rate, due in 2038
Fair Value of Financial Instruments
Interest Rate	3.25%
Mortgage note payable | Mortgage note payable, 3.760% interest rate, due in 2028
Fair Value of Financial Instruments
Interest Rate	3.76%

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Assets Measured on Recurring Basis (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)property
Twelve Mainland Properties
Fair Value of Financial Instruments
Equity interest in joint venture	22.00%
Number of properties contributed | property	18
Fair Value, Inputs, Level 3
Fair Value of Financial Instruments
Holding period	10 years
Fair Value, Inputs, Level 3 | Minimum | Discount rate
Fair Value of Financial Instruments
Unconsolidated joint venture measurement input	0.0525
Fair Value, Inputs, Level 3 | Minimum | Exit capitalization rate
Fair Value of Financial Instruments
Unconsolidated joint venture measurement input	0.0450
Fair Value, Inputs, Level 3 | Minimum | Direct capitalization rate
Fair Value of Financial Instruments
Unconsolidated joint venture measurement input	0.0400
Fair Value, Inputs, Level 3 | Maximum | Discount rate
Fair Value of Financial Instruments
Unconsolidated joint venture measurement input	0.0650
Fair Value, Inputs, Level 3 | Maximum | Exit capitalization rate
Fair Value of Financial Instruments
Unconsolidated joint venture measurement input	0.0550
Fair Value, Inputs, Level 3 | Maximum | Direct capitalization rate
Fair Value of Financial Instruments
Unconsolidated joint venture measurement input	0.0450
Fair Value, Recurring
Fair Value of Financial Instruments
Investments in unconsolidated joint venture	$ 143,428
Interest rate cap derivatives	9,859
Fair Value, Recurring | Fair Value, Inputs, Level 1
Fair Value of Financial Instruments
Investments in unconsolidated joint venture	0
Interest rate cap derivatives	0
Investment in marketable securities held for sale	34,508
Fair Value, Recurring | Fair Value, Inputs, Level 2
Fair Value of Financial Instruments
Investments in unconsolidated joint venture	0
Interest rate cap derivatives	9,859
Investment in marketable securities held for sale	0
Fair Value, Recurring | Fair Value, Inputs, Level 3
Fair Value of Financial Instruments
Investments in unconsolidated joint venture	143,428
Interest rate cap derivatives	0
Investment in marketable securities held for sale	$ 0

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	Apr. 25, 2022	Feb. 17, 2022	Mar. 31, 2022
Shareholders' Equity
Dividends paid (in dollars per share)		$ 0.33
Dividends paid		$ 21,584
Former Employee
Shareholders' Equity
Share repurchases (in shares)			333
Per share value of common shares granted (in dollars per share)			$ 22.67
Subsequent Event
Shareholders' Equity
Dividends paid (in dollars per share)	$ 0.33
Dividends paid	$ 21,600

Per Common Share Amounts (Detai

Per Common Share Amounts (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Weighted average common shares for basic earnings per share (in shares)	65,212	65,139
Effect of dilutive securities: unvested share awards (in shares)	0	38
Weighted average common shares for diluted earnings per share (in shares)	65,212	65,177
Antidilutive securities excluded from computation of EPS	18

Business and Property Managem_2

Business and Property Management Agreements with RMR (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2022USD ($)employeeagreementjoint_venture	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)
Related Party Transaction [Line Items]
Number of employees | employee	0
Number of management service agreements | agreement	2
Incentive fee expense			$ 0
Due to related persons	$ 6,077,000		$ 2,185,000
Business Management Fees
Related Party Transaction [Line Items]
Incentive fee expense	$ 0	$ 0
Joint Venture
Related Party Transaction [Line Items]
Number of joint ventures | joint_venture	2
Reit Management And Research L L C
Related Party Transaction [Line Items]
Number of management service agreements | agreement	2
Business management fees	$ 4,399,000	2,544,000
Management service agreement term	3 years
Related party reimbursement expense	$ 1,604,000	1,141,000
Reit Management And Research L L C | Property Management and Construction Supervision Fees
Related Party Transaction [Line Items]
Expenses from transactions	2,763,000	1,594,000
Reit Management And Research L L C | Property Management and Construction Supervision Fees | Other Operating Income (Expense)
Related Party Transaction [Line Items]
Expenses from transactions	2,098,000	1,582,000
Reit Management And Research L L C | Investment Building and Building Improvements | Capitalized Costs
Related Party Transaction [Line Items]
Due to related persons	$ 31,000	$ 12,000

Related Person Transactions - N

Related Person Transactions - Narrative (Details) $ in Thousands	Feb. 25, 2022property	Dec. 31, 2021USD ($)property	May 31, 2021USD ($)	Mar. 31, 2022USD ($)agreementinvestorproperty	Jan. 31, 2022USD ($)	Nov. 30, 2020	Jan. 17, 2018investor
Related Party Transaction [Line Items]
Number of management service agreements | agreement				2
Number of joint venture agreements | agreement				2
Due to related persons		$ 2,185		$ 6,077
MNR
Related Party Transaction [Line Items]
Number of properties acquired | property	95
Number of properties acquired but aren't yet completed | property	2
Equity interest in joint venture	61.00%			61.00%
Number of investors | investor							1
Twelve Mainland Properties
Related Party Transaction [Line Items]
Equity interest in joint venture				22.00%
Number of investors | investor				2
Number of properties contributed | property		18		18
Proceeds from sale of interest in joint Venture		$ 160,516
Twelve Mainland Properties | Variable Interest Entity
Related Party Transaction [Line Items]
Number of properties contributed | property		6
Mountain Industrial REIT LLC
Related Party Transaction [Line Items]
Noncontrolling interest ownership percentage	39.00%
Dallas, TX
Related Party Transaction [Line Items]
Acquisition related costs			$ 119
Payments to acquire real estate held-for-investment			$ 2,319
Amended and Restated Asset Management Agreement | The Industrial Fund REIT Inc.
Related Party Transaction [Line Items]
Equity interest in joint venture						22.00%
Industrial Fund | Rents Collected For Joint Venture
Related Party Transaction [Line Items]
Due to related persons		$ 225			$ 629

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Summary of Interest Rate Cap Agreements (Details) - Interest Rate Swap - Cash Flow Hedging - Designated as Hedging Instrument $ in Thousands	Mar. 31, 2022USD ($)derivative_instrument
Bridge Loan, 3.214% weighted average interest rate, due in 2023
Derivative Instruments, Gain (Loss) [Line Items]
Number of Instruments | derivative_instrument	2
Strike Rate	2.70%
Notional Amount	$ 1,385,158
Fair Value at March 31, 2022	$ 2,044
Floating Rate Loan
Derivative Instruments, Gain (Loss) [Line Items]
Number of Instruments | derivative_instrument	1
Strike Rate	3.40%
Notional Amount	$ 1,400,000
Fair Value at March 31, 2022	$ 7,815

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Summary of Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Balance at December 31, 2021			$ 0
Amount of income recognized in cumulative other comprehensive income	$ 5,375
Amount reclassified from cumulative other comprehensive income into interest expense	257
Unrealized gain on derivative instrument	$ 5,632	$ 0

Noncontrolling Interest (Detail

Noncontrolling Interest (Details) $ in Thousands	Feb. 25, 2022USD ($)property	Mar. 31, 2022USD ($)	Mar. 31, 2021USD ($)
Noncontrolling Interest [Line Items]
Net income (loss) attributable to noncontrolling interest		$ 3,273	$ 0
MNR
Noncontrolling Interest [Line Items]
Number of properties acquired | property	95
Number of properties acquired but aren't yet completed | property	2
Net income (loss) attributable to noncontrolling interest		$ 3,261
Equity interest in joint venture	61.00%	61.00%
Mountain Industrial REIT LLC
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership percentage	39.00%
Noncontrolling interest, ownership percentage by parent	61.00%
Mountain Industrial REIT LLC | Co-venturer
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership percentage	39.00%
Noncontrolling interest in joint ventures	$ 587,440
Somerset, New Jersey | Mountain Industrial REIT LLC
Noncontrolling Interest [Line Items]
Number of properties acquired | property	1
Noncontrolling interest ownership percentage	33.00%
Net income (loss) attributable to noncontrolling interest		$ 12
Equity interest in joint venture	67.00%