The RMR Group Inc. (RMR) 10-Q 4 Aug 22 2022 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Jun. 30, 2022	Aug. 03, 2022
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	001-37616
Entity Registrant Name	RMR GROUP INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	47-4122583
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	796-8230
Title of 12(b) Security	Class A common stock, $0.001 par value per share
Trading Symbol	RMR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001644378
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		15,500,716
Class B-1 Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		1,000,000
Class B-2 Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		15,000,000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 195,936	$ 159,835
Due from related parties	93,939	88,661
Prepaid and other current assets	6,003	6,021
Total current assets	295,878	254,517
Property and equipment, net	2,629	2,218
Due from related parties, net of current portion	15,167	14,331
Equity method investments accounted for under the fair value option	39,677	39,476
Goodwill and intangible assets, net of amortization	2,066	2,094
Operating lease right of use assets	29,567	32,293
Deferred tax asset	18,803	18,671
Other assets, net of amortization	127,249	134,311
Total assets	531,036	497,911
Current liabilities:
Reimbursable accounts payable and accrued expenses	67,320	55,115
Accounts payable and accrued expenses	32,063	15,027
Operating lease liabilities	4,867	4,922
Employer compensation liability	2,804	6,076
Total current liabilities	107,054	81,140
Operating lease liabilities, net of current portion	26,230	29,148
Amounts due pursuant to tax receivable agreement, net of current portion	25,577	25,577
Employer compensation liability, net of current portion	15,167	14,331
Total liabilities	174,028	150,196
Commitments and contingencies
Equity:
Additional paid in capital	112,396	109,910
Retained earnings	343,949	321,945
Cumulative common distributions	(255,896)	(236,766)
Total shareholders’ equity	200,481	195,120
Noncontrolling interest	156,527	152,595
Total equity	357,008	347,715
Total liabilities and equity	531,036	497,911
Class A Common Stock
Equity:
Common stock	16	15
Class B-1 Common Stock
Equity:
Common stock	1	1
Class B-2 Common Stock
Equity:
Common stock	$ 15	$ 15

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2022	Sep. 30, 2021
Class A Common Stock
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	31,600,000	31,600,000
Common stock, shares issued (in shares)	15,500,716	15,485,236
Common stock shares outstanding (in shares)	15,500,716	15,485,236
Class B-1 Common Stock
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, shares issued (in shares)	1,000,000	1,000,000
Common stock shares outstanding (in shares)	1,000,000	1,000,000
Class B-2 Common Stock
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	15,000,000	15,000,000
Common stock, shares issued (in shares)	15,000,000	15,000,000
Common stock shares outstanding (in shares)	15,000,000	15,000,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Total revenues	$ 211,088	$ 145,244	$ 590,310	$ 433,754
Expenses:
Compensation and benefits	32,170	30,530	95,671	90,610
Equity based compensation	512	1,954	4,719	7,267
Separation costs	400	0	617	4,159
Total compensation and benefits expense	33,082	32,484	101,007	102,036
General and administrative	8,323	6,320	24,464	19,684
Other reimbursable expenses	144,012	85,263	397,063	259,856
Transaction and acquisition related costs	0	61	0	474
Depreciation and amortization	253	245	731	734
Total expenses	185,670	124,373	523,265	382,784
Operating income	25,418	20,871	67,045	50,970
Interest and other income	279	179	402	614
Equity in earnings of investees	0	28	0	755
Unrealized (loss) gain on equity method investments accounted for under the fair value option	(5,489)	1,312	(8,853)	6,032
Income before income tax expense	20,208	22,390	58,594	58,371
Income tax expense	(2,943)	(3,361)	(8,448)	(8,109)
Net income	17,265	19,029	50,146	50,262
Net income attributable to noncontrolling interest	(9,695)	(10,797)	(28,142)	(28,192)
Net income attributable to The RMR Group Inc.	$ 7,570	$ 8,232	$ 22,004	$ 22,070
Weighted average common shares outstanding - basic (in shares)	16,343	16,269	16,332	16,259
Weighted average common shares outstanding - diluted (in shares)	31,353	31,308	31,342	31,271
Net income attributable to The RMR Group Inc. per common share - basic (in dollars per share)	$ 0.46	$ 0.50	$ 1.33	$ 1.35
Net income attributable to The RMR Group Inc. per common share - diluted (in dollars per share)	$ 0.46	$ 0.50	$ 1.33	$ 1.31
Total management and advisory services revenues
Revenues:
Total revenues	$ 52,956	$ 45,510	$ 148,259	$ 128,834
Management services
Revenues:
Total revenues	51,819	44,376	144,867	125,365
Incentive business management fees
Revenues:
Total revenues	0	0	0	620
Advisory services
Revenues:
Total revenues	1,137	1,134	3,392	2,849
Total reimbursable costs
Revenues:
Total revenues	158,132	99,734	442,051	304,920
Reimbursable compensation and benefits
Revenues:
Total revenues	14,189	13,069	42,092	39,453
Reimbursable equity based compensation
Revenues:
Total revenues	(69)	1,402	2,896	5,611
Other reimbursable expenses
Revenues:
Total revenues	$ 144,012	$ 85,263	$ 397,063	$ 259,856

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Total Shareholders' Equity	Common Stock Class A Common Stock	Common Stock Class B-1 Common Stock	Common Stock Class B-2 Common Stock	Additional Paid In Capital	Retained Earnings	Cumulative Common Distributions	Noncontrolling Interest
Balance beginning at Sep. 30, 2020	$ 540,902	$ 295,919	$ 15	$ 1	$ 15	$ 106,622	$ 286,249	$ (96,983)	$ 244,983
Increase (Decrease) in Shareholders' Equity
Share awards, net	1,012	1,012				1,012
Net income	19,753	8,897					8,897		10,856
Tax distributions to member	(2,820)								(2,820)
Common share distributions	(10,730)	(6,230)						(6,230)	(4,500)
Balance ending at Dec. 31, 2020	548,117	299,598	15	1	15	107,634	295,146	(103,213)	248,519
Balance beginning at Sep. 30, 2020	540,902	295,919	15	1	15	106,622	286,249	(96,983)	244,983
Increase (Decrease) in Shareholders' Equity
Net income	50,262
Balance ending at Jun. 30, 2021	550,752	301,951	15	1	15	109,281	308,319	(115,680)	248,801
Balance beginning at Dec. 31, 2020	548,117	299,598	15	1	15	107,634	295,146	(103,213)	248,519
Increase (Decrease) in Shareholders' Equity
Share awards, net	1,298	1,298				1,298
Net income	11,480	4,941					4,941		6,539
Tax distributions to member	(4,459)								(4,459)
Common share distributions	(10,730)	(6,230)						(6,230)	(4,500)
Balance ending at Mar. 31, 2021	545,706	299,607	15	1	15	108,932	300,087	(109,443)	246,099
Increase (Decrease) in Shareholders' Equity
Share awards, net	349	349				349
Net income	19,029	8,232					8,232		10,797
Tax distributions to member	(3,595)								(3,595)
Common share distributions	(10,737)	(6,237)						(6,237)	(4,500)
Balance ending at Jun. 30, 2021	550,752	301,951	15	1	15	109,281	308,319	(115,680)	248,801
Balance beginning at Sep. 30, 2021	347,715	195,120	15	1	15	109,910	321,945	(236,766)	152,595
Increase (Decrease) in Shareholders' Equity
Share awards, net	613	613				613
Net income	18,292	8,042					8,042		10,250
Tax distributions to member	(1,979)								(1,979)
Common share distributions	(10,764)	(6,264)						(6,264)	(4,500)
Balance ending at Dec. 31, 2021	353,877	197,511	15	1	15	110,523	329,987	(243,030)	156,366
Balance beginning at Sep. 30, 2021	347,715	195,120	15	1	15	109,910	321,945	(236,766)	152,595
Increase (Decrease) in Shareholders' Equity
Net income	50,146
Balance ending at Jun. 30, 2022	357,008	200,481	16	1	15	112,396	343,949	(255,896)	156,527
Balance beginning at Dec. 31, 2021	353,877	197,511	$ 15	1	15	110,523	329,987	(243,030)	156,366
Increase (Decrease) in Shareholders' Equity
​Share awards, net (in shares)			1
Share awards, net	1,145	1,145				1,144
Net income	14,589	6,392					6,392		8,197
Tax distributions to member	(4,277)								(4,277)
Common share distributions	(10,765)	(6,265)						(6,265)	(4,500)
Balance ending at Mar. 31, 2022	354,569	198,783	$ 16	1	15	111,667	336,379	(249,295)	155,786
Increase (Decrease) in Shareholders' Equity
Share awards, net	729	729				729
Net income	17,265	7,570					7,570		9,695
Tax distributions to member	(4,154)								(4,154)
Common share distributions	(11,401)	(6,601)						(6,601)	(4,800)
Balance ending at Jun. 30, 2022	$ 357,008	$ 200,481	$ 16	$ 1	$ 15	$ 112,396	$ 343,949	$ (255,896)	$ 156,527

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash Flows from Operating Activities:
Net income	$ 50,146	$ 50,262
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	731	734
Straight line office rent	(247)	60
Amortization expense related to other assets	7,062	7,062
Deferred income taxes	(132)	1,983
Operating expenses paid in The RMR Group Inc. common shares	2,518	2,881
Equity in earnings of investees	0	(755)
Distributions from equity method investments	415	1,024
Unrealized loss (gain) on equity method investments accounted for under the fair value option	8,853	(6,032)
Changes in assets and liabilities:
Due from related parties	(8,550)	(7,872)
Prepaid and other current assets	18	(1,590)
Reimbursable accounts payable and accrued expenses	12,205	5,651
Accounts payable and accrued expenses	16,837	18,963
Net cash from operating activities	89,856	72,371
Cash Flows from Investing Activities:
Purchase of property and equipment	(915)	(940)
Equity method investment in Seven Hills Realty Trust	(9,469)	0
Net cash used in investing activities	(10,384)	(940)
Cash Flows from Financing Activities:
Distributions to noncontrolling interest	(24,210)	(24,374)
Distributions to common shareholders	(19,130)	(18,697)
Repurchase of common shares	(31)	(222)
Net cash used in financing activities	(43,371)	(43,293)
Increase in cash and cash equivalents	36,101	28,138
Cash and cash equivalents at beginning of period	159,835	369,663
Cash and cash equivalents at end of period	195,936	397,801
Supplemental Cash Flow Information and Non-Cash Activities:
Income taxes paid	7,392	8,931
Fair value of share based payments recorded	2,896	5,611
Recognition of right of use assets and related lease liabilities	$ 783	$ 2,249

Basis of Presentation

Basis of Presentation	9 Months Ended
	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The RMR Group Inc., or RMR Inc., is a holding company and substantially all of its business is conducted by its majority owned subsidiary, The RMR Group LLC, or RMR LLC. RMR Inc. is a Maryland corporation and RMR LLC is a Maryland limited liability company. RMR Inc. serves as the sole managing member of RMR LLC and, in that capacity, operates and controls the business and affairs of RMR LLC. In these financial statements, unless otherwise indicated, “we”, “us” and “our” refer to RMR Inc. and its direct and indirect subsidiaries, including RMR LLC. As of June 30, 2022, RMR Inc. owned 15,500,716 class A membership units of RMR LLC, or Class A Units, and 1,000,000 class B membership units of RMR LLC, or Class B Units. The aggregate RMR LLC membership units RMR Inc. owns represented 52.4% of the economic interest of RMR LLC as of June 30, 2022. We refer to economic interest as the right of a holder of a Class A Unit or Class B Unit to share in distributions made by RMR LLC and, upon liquidation, dissolution or winding up of RMR LLC, to share in the assets of RMR LLC after payments to creditors. A wholly owned subsidiary of ABP Trust, a Maryland statutory trust, owns 15,000,000 redeemable Class A Units, representing 47.6% of the economic interest of RMR LLC as of June 30, 2022, which is presented as a noncontrolling interest within the condensed consolidated financial statements. Adam D. Portnoy, the chair of our Board and one of our Managing Directors, is the sole trustee of ABP Trust, and owns all of ABP Trust’s voting securities. RMR LLC was founded in 1986 to manage public investments in real estate and, as of June 30, 2022, managed a diverse portfolio of real estate and real estate related businesses. RMR LLC provides management services to four publicly traded equity real estate investment trusts, or REITs: Diversified Healthcare Trust, or DHC, which owns medical office and life science properties, senior living communities and wellness centers; Industrial Logistics Properties Trust, or ILPT, which owns and leases industrial and logistics properties; Office Properties Income Trust, or OPI, which owns office properties primarily leased to single tenants and those with high quality credit characteristics, including the government; and Service Properties Trust, or SVC, which owns a diverse portfolio of hotels and net lease service and necessity-based retail properties. DHC, ILPT, OPI and SVC are collectively referred to as the Managed Equity REITs. RMR LLC also provides management services to three real estate operating companies: AlerisLife Inc., or ALR, a publicly traded operator of senior living communities, many of which are owned by DHC; Sonesta International Hotels Corporation, or Sonesta, a privately owned franchisor and operator of hotels, resorts and cruise ships in the United States, Latin America, the Caribbean and the Middle East, and many of the U.S. hotels that Sonesta operates are owned by SVC; and TravelCenters of America Inc., or TA, an operator and franchisor of travel centers primarily along the U.S. interstate highway system, many of which are owned by SVC, and standalone truck service facilities. ALR, Sonesta and TA are collectively referred to as the Managed Operating Companies. In addition, RMR LLC provides management services to private capital vehicles, including ABP Trust and its subsidiaries, or collectively ABP Trust, and other private entities that own commercial real estate of which certain of our Managed Equity REITs own minority equity interests. In these financial statements, we refer to these clients as the Managed Private Real Estate Capital clients. RMR LLC’s wholly owned subsidiary, Tremont Realty Capital LLC, or Tremont Realty Capital, an investment adviser registered with the Securities and Exchange Commission, or SEC, provides advisory services for Seven Hills Realty Trust, or SEVN. SEVN is a publicly traded mortgage REIT that focuses on originating and investing in first mortgage whole loans secured by middle market and transitional commercial real estate. Until September 30, 2021, Tremont Realty Capital also provided advisory services to Tremont Mortgage Trust, or TRMT, a publicly traded mortgage REIT that merged with and into SEVN on September 30, 2021, or the Merger, with SEVN continuing as the surviving company. Tremont Realty Capital has in the past and may in the future manage additional accounts that invest in commercial real estate debt. Tremont Realty Capital may also act as a transaction broker for non-investment advisory clients for negotiated fees, which we refer to as the Tremont business. The Managed Equity REITs, SEVN, and, until September 30, 2021, TRMT, are collectively referred to as the Managed REITs or the Managed Public Real Estate Capital clients. The accompanying condensed consolidated financial statements 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 financial statements and notes contained in our Annual Report on Form 10-K for the fiscal year ended September 30, 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. Preparation of these financial statements in conformity with GAAP requires our management to make certain estimates and assumptions that may affect the amounts reported in these financial statements and related notes. The actual results could differ from these estimates.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Jun. 30, 2022
Revenue Recognition [Abstract]
Revenue Recognition	Revenue Recognition Revenues from services that we provide are recognized as earned over time as the services provided represent performance obligations that are satisfied over time. Business Management Agreements with Managed Equity REITs Base Business Management Fees — We earn annual base business management fees from the Managed Equity REITs by providing continuous services pursuant to business management agreements equal to the lesser of: • the sum of (a) 0.5% of the historical cost of transferred real estate assets, if any, as defined in the applicable business management agreement, plus (b) 0.7% of the average invested capital (exclusive of the transferred real estate assets), as defined in the applicable business management agreement, up to $250,000, plus (c) 0.5% of the average invested capital exceeding $250,000; and • the sum of (a) 0.7% of the average market capitalization, as defined in the applicable business management agreement, up to $250,000, plus (b) 0.5% of the average market capitalization exceeding $250,000. The foregoing base business management fees are paid in cash monthly in arrears. We earned aggregate base business management fees from the Managed Equity REITs of $25,446 and $24,471 for the three months ended June 30, 2022 and 2021, respectively, and $73,085 and $68,599 for the nine months ended June 30, 2022 and 2021, respectively. Incentive Business Management Fees — We also may earn annual incentive business management fees from the Managed Equity REITs under the business management agreements. The incentive business management fees, which are payable in cash, are contingent performance based fees recognized only when earned at the end of each respective measurement period. Incentive business management fees are excluded from the transaction price until it becomes probable that there will not be a significant reversal of cumulative revenue recognized. The incentive business management fees are calculated for each Managed Equity REIT as 12.0% of the product of (a) the equity market capitalization of the Managed Equity REIT, as defined in the applicable business management agreement, on the last trading day of the year immediately prior to the relevant measurement period and (b) the amount, expressed as a percentage, by which the Managed Equity REIT’s total return per share, as defined in the applicable business management agreement, exceeded the applicable benchmark total return per share, as defined in the applicable business management agreement, of a specified REIT index identified in the applicable business management agreement for the measurement period, as adjusted for net share issuances during the period and subject to caps on the values of the incentive fees. The measurement period for the annual incentive business management fees is defined as the three year period ending on December 31 of the year for which such fee is being calculated. We did not earn incentive business management fees from the Managed Equity REITs for the calendar years 2021 and 2020. Other Management Agreements Managed Operating Companies — We earn management fees by providing continuous services pursuant to the management agreements from the Managed Operating Companies equal to 0.6% of: (i) in the case of ALR, ALR’s revenues from all sources reportable under GAAP, less any revenues reportable by ALR with respect to properties for which it provides management services, plus the gross revenues at those properties determined in accordance with GAAP; (ii) in the case of Sonesta, Sonesta’s revenues from all sources reportable under GAAP, less any revenues reportable by Sonesta with respect to hotels for which it provides management services, plus the gross revenues at those hotels determined in accordance with GAAP; and (iii) in the case of TA, the sum of TA’s gross fuel margin, as defined in the applicable agreement, plus TA’s total nonfuel revenues. These management fees are estimated and payable in cash monthly in advance. We earned aggregate fees from the Managed Operating Companies of $8,171 and $6,976 for the three months ended June 30, 2022 and 2021, respectively, and $21,201 and $17,988 for the nine months ended June 30, 2022 and 2021, respectively. Managed Private Real Estate Capital — We earn management fees from the Managed Private Real Estate Capital clients based on a percentage of average invested capital, as defined in the applicable management agreements. These management fees are payable in cash monthly in arrears. We earned aggregate fees from the Managed Private Real Estate Capital clients of $2,936 and $1,276 for the three months ended June 30, 2022 and 2021, respectively, and $7,095 and $3,463 for the nine months ended June 30, 2022 and 2021, respectively. Property Management Agreements We earn property management fees by providing continuous services pursuant to property management agreements with our clients. We generally earn fees under these agreements equal to 3.0% of gross collected rents. Also, under the terms of the property management agreements, we receive additional fees for construction supervision services in connection with certain construction activities undertaken at the properties owned by the Managed Equity REITs and certain of the Managed Operating Companies up to 5.0% of the cost of such construction. For the three months ended June 30, 2022 and 2021, we earned aggregate property management fees of $15,220 and $11,653, respectively, including construction supervision fees of $4,596 and $2,178, respectively. For the nine months ended June 30, 2022 and 2021, we earned aggregate property management fees of $43,387 and $35,056, respectively, including construction supervision fees of $11,623 and $6,007, respectively. Management Agreements with Advisory Clients Tremont Realty Capital is primarily compensated pursuant to its management agreements with SEVN (beginning January 6, 2021) and TRMT (until September 30, 2021 when it was terminated in connection with the Merger) at an annual rate of 1.5% of equity, as defined in the applicable agreements. Tremont Realty Capital waived any business management fees otherwise due and payable by TRMT pursuant to the management agreement for the period beginning July 1, 2018 until December 31, 2020. We earned advisory services revenue of $1,137 and $1,134 for the three months ended June 30, 2022 and 2021, respectively, and $3,392 and $2,849 for the nine months ended June 30, 2022 and 2021, respectively. Tremont Realty Capital may also earn an incentive fee under its management agreements with SEVN (beginning the second calendar quarter of 2021) and TRMT (until September 30, 2021) equal to, with respect to each company, the difference between: (a) the product of (i) 20% and (ii) the difference between (A) core earnings, as defined in the applicable agreements, for the most recent 12 month period (or such lesser number of completed calendar quarters, if applicable), including the calendar quarter (or part thereof) for which the calculation of the incentive fee is being made, and (B) the product of (1) equity in the most recent 12 month period (or such lesser number of completed calendar quarters, if applicable), including the calendar quarter (or part thereof) for which the calculation of the incentive fee is being made, and (2) 7% per year and (b) the sum of any incentive fees paid to Tremont Realty Capital with respect to the first three calendar quarters of the most recent 12 month period (or such lesser number of completed calendar quarters preceding the applicable period, if applicable). No incentive fee shall be payable with respect to any calendar quarter unless core earnings for the 12 most recently completed calendar quarters (or such lesser number of completed calendar quarters from January 5, 2021 for SEVN) in the aggregate is greater than zero. The incentive fee may not be less than zero. Tremont Realty Capital did not earn incentive fees from SEVN for the three and nine months ended June 30, 2022. Incentive fees earned from TRMT were zero and $620 for the three and nine months ended June 30, 2021, respectively. The Tremont business earns between 0.5% and 1.0% of the aggregate principal amounts of any loans it brokers. The Tremont business earned fees for such brokerage services of $46 and zero for the three months ended June 30, 2022 and 2021, respectively, and $99 and $259 for the nine months ended June 30, 2022 and 2021, respectively, which amounts are included in management services revenue in our condensed consolidated statements of income. Reimbursable Costs Reimbursable Compensation and Benefits — Reimbursable compensation and benefits include reimbursements, at cost, that arise primarily from services our employees provide pursuant to our property management agreements at the properties of our clients. A significant portion of these compensation and benefits are charged or passed through to and were paid by tenants of our clients. We recognize the revenue for reimbursements when we incur the related reimbursable compensation and benefits expense on behalf of our clients. Reimbursable Equity Based Compensation — Reimbursable equity based compensation includes awards of common shares by our clients directly to certain of our officers and employees in connection with the provision of management services to those clients. The revenue in respect of each award is based on the fair value as of the award date for those shares that have vested, with subsequent changes in the fair value of the unvested awards being recognized in our condensed consolidated statements of income over the requisite service periods. We record an equal, offsetting amount as equity based compensation expense for the value of these awards. Other Reimbursable Expenses —

Equity Method Investments

Equity Method Investments	9 Months Ended
	Jun. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Equity Method Investments Seven Hills Realty Trust As of June 30, 2022, Tremont Realty Capital owned 1,708,058, or approximately 11.7%, of SEVN’s outstanding common shares, which includes 882,407 shares acquired on May 11, 2022 from Diane Portnoy for $9,469 as further described in Note 6, Related Person Transaction s. We account for our investment in SEVN using the equity method of accounting because we are deemed to exert significant influence, but not control, over SEVN’s most significant activities. As a result of the Merger, we elected the fair value option to account for our equity method investment in SEVN and determine fair value using the closing price of SEVN’s common shares as of the end of the period, which is a Level 1 fair value input. The aggregate market value of our investment in SEVN at June 30, 2022 and September 30, 2021, based on quoted market prices, was $18,242 and $8,513, respectively. The unrealized (loss) gain in our condensed consolidated statements of income related to our investment in SEVN was $(209) and $675 for the three and nine months ended June 30, 2022, respectively. During the three and nine months ended June 30, 2022, we received distributions from SEVN of $207 and $415, respectively. Immediately prior to the consummation of the Merger, Tremont Realty Capital owned 1,600,100, or approximately 19.3%, of TRMT’s then outstanding common shares that were accounted for under the equity method of accounting. Pursuant to the equity method, we recorded our share of earnings from our investment in TRMT in equity in earnings of investees in our condensed consolidated statements of income which totaled $28 and $755 for the three and nine months ended June 30, 2021, respectively. We received aggregate distributions from TRMT of $160 and $1,024 during the three and nine months ended June 30, 2021, respectively. Pursuant to the Merger, each common share of TRMT converted to 0.516 common shares of SEVN. TravelCenters of America Inc. As of June 30, 2022, we owned 621,853, or approximately 4.2%, of TA’s outstanding common shares. We account for our investment in TA using the equity method of accounting because we are deemed to exert significant influence, but not control, over TA’s most significant activities. We elected the fair value option to account for our equity method investment in TA and determine fair value using the closing price of TA’s common shares as of the end of the period, which is a Level 1 fair value input. The aggregate market value of our investment in TA at June 30, 2022 and September 30, 2021, based on quoted market prices, was $21,435 and $30,963, respectively. The unrealized (loss) gain in our condensed consolidated statements of income related to our investment in TA was $(5,280) and $1,312 for the three months ended June 30, 2022 and 2021, respectively, and $(9,528) and $6,032 for the nine months ended June 30, 2022 and 2021, respectively.

Income Taxes

Income Taxes	9 Months Ended
	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We are the sole managing member of RMR LLC. We are a corporation subject to U.S. federal and state income tax with respect to our allocable share of any taxable income of RMR LLC and its tax consolidated subsidiaries. RMR LLC is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, RMR LLC is generally not subject to U.S. federal and most state income taxes. Any taxable income or loss generated by RMR LLC is passed through to and included in the taxable income or loss of its members, including RMR Inc. and ABP Trust, based on each member’s respective ownership percentage. For the three months ended June 30, 2022 and 2021, we recognized estimated income tax expense of $2,943 and $3,361, respectively, which includes $2,162 and $2,467, respectively, of U.S. federal income tax and $781 and $894, respectively, of state income taxes. For the nine months ended June 30, 2022 and 2021, we recognized estimated income tax expense of $8,448 and $8,109, respectively, which includes $6,205 and $5,953, respectively, of U.S. federal income tax and $2,243 and $2,156, respectively, of state income taxes. A reconciliation of the statutory income tax rate to the effective tax rate is as follows: Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Income taxes computed at the federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % State taxes, net of federal benefit 3.1 % 3.2 % 3.1 % 3.2 % Permanent items 0.6 % 0.9 % 0.4 % 0.7 % Net income attributable to noncontrolling interest (10.1) % (10.1) % (10.1) % (10.1) % Other (1) — % — % — % (0.9) % Total 14.6 % 15.0 % 14.4 % 13.9 % (1) In December 2020, the Internal Revenue Service and Department of Treasury released final regulations which, among other clarifications, established the effective date as it relates to limitations on the deductibility of certain executive compensation. The final regulations provide that the application of the limit applies to deductions after December 18, 2020. As such, during the three months ended December 31, 2020, we reduced our provision for income taxes for limitations applied prior to the effective date by $520, or $0.02 per diluted share. ASC 740, Income Taxes , provides a model for how a company should recognize, measure and present in its financial statements uncertain tax positions that have been taken or are expected to be taken with respect to all open years and in all significant jurisdictions. Pursuant to this topic, we recognize a tax benefit only if it is “more likely than not” that a particular tax position will be sustained upon examination or audit. To the extent the “more likely than not” standard has been satisfied, the benefit associated with a tax position is measured as the largest amount that is greater than 50.0% likely to be realized upon settlement. As of June 30, 2022 and 2021, we had no uncertain tax positions.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments As of June 30, 2022 and September 30, 2021, the fair values of our financial instruments, which include cash and cash equivalents, amounts due from related parties, accounts payable and accrued expenses and reimbursable accounts payable and accrued expenses, were not materially different from their carrying values due to the short term nature of these financial instruments. On a recurring basis, we measure certain financial assets and financial liabilities at fair value based upon quoted market prices. ASC 820, Fair Value Measurements , establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1), and the lowest priority to unobservable inputs (Level 3). A financial asset’s or financial liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs. The following are our assets and liabilities that have been measured at fair value using Level 1 inputs in the fair value hierarchy as of June 30, 2022 and September 30, 2021: June 30, September 30, 2022 2021 Money market funds included in cash and cash equivalents $ 175,459 $ 131,065 Current portion of due from related parties related to share based payment awards 2,804 6,076 Long term portion of due from related parties related to share based payment awards 15,167 14,331 Equity method investment in SEVN 18,242 8,513 Equity method investment in TA 21,435 30,963 Current portion of employer compensation liability related to share based payment awards 2,804 6,076 Long term portion of employer compensation liability related to share based payment awards 15,167 14,331

Related Person Transactions

Related Person Transactions	9 Months Ended
	Jun. 30, 2022
Related Party Transactions [Abstract]
Related Person Transactions	Related Person Transactions Adam D. Portnoy, the chair of our Board and one of our Managing Directors, is the sole trustee of our controlling shareholder, ABP Trust, and owns all of ABP Trust’s voting securities and a majority of the economic interests of ABP Trust. As of June 30, 2022, Adam D. Portnoy beneficially owned, in aggregate, (i) 173,502 shares of Class A common stock of RMR Inc., or Class A Common Shares; (ii) all the outstanding shares of Class B-1 common stock of RMR Inc., or Class B-1 Common Shares; (iii) all the outstanding shares of Class B-2 common stock of RMR Inc., or Class B-2 Common Shares; and (iv) 15,000,000 Class A Units of RMR LLC. Adam D. Portnoy and Jennifer B. Clark, our other Managing Director, are also officers of ABP Trust and RMR Inc. and officers and employees of RMR LLC. Matthew P. Jordan, our Executive Vice President, Chief Financial Officer and Treasurer, is also an officer of ABP Trust and an officer and employee of RMR LLC. Adam D. Portnoy is the chair of the board of each of the Managed REITs, ALR and TA, a managing trustee or managing director of each of the Managed REITs, ALR and TA, a director of Sonesta (and its parent) and the controlling shareholder of Sonesta (and its parent). Jennifer B. Clark is a managing trustee of OPI, a managing director of ALR and a director of Sonesta (and its parent), and she previously served as a managing trustee of each of DHC and RMRM (now known as SEVN) until June 3, 2021 and January 5, 2021, respectively. Ms. Clark also serves as the secretary of all our publicly traded clients and Sonesta. As of June 30, 2022, Adam D. Portnoy beneficially owned, in aggregate, 6.2% of ALR’s outstanding common shares, 1.1% of SVC’s outstanding common shares, 1.2% of ILPT’s outstanding common shares, 1.5% of OPI’s outstanding common shares, 1.1% of DHC’s outstanding common shares, 4.5% of TA’s outstanding common shares (including through RMR LLC) and 13.5% of SEVN’s outstanding common shares (including through Tremont Realty Capital). The Managed REITs have no employees. RMR LLC provides or arranges for all the personnel, overhead and services required for the operation of the Managed Equity REITs pursuant to management agreements with them. All the officers of the Managed Equity REITs and ABP Trust are officers or employees of RMR LLC. All the officers, overhead and required office space of SEVN are provided or arranged by Tremont Realty Capital, and prior to the Merger, Tremont Realty Capital provided or arranged for the officers, overhead and required office space for TRMT. All of SEVN’s officers are officers or employees of Tremont Realty Capital or RMR LLC. Many of the executive officers of the Managed Operating Companies are officers or employees of RMR LLC. Some of our executive officers are also managing directors or managing trustees of certain of the Managed REITs and the Managed Operating Companies. Additional information about our related person transactions appears in Note 7, Shareholders’ Equity , below and in our 2021 Annual Report. Revenues from Related Parties For the three months ended June 30, 2022 and 2021, we recognized revenues from related parties as set forth in the following table: Three Months Ended June 30, 2022 Three Months Ended June 30, 2021 Total Total Management Management and Advisory Total and Advisory Total Services Reimbursable Total Services Reimbursable Total Revenues Costs Revenues Revenues Costs Revenues Managed Public Real Estate Capital: (1) DHC $ 7,208 $ 41,318 $ 48,526 $ 9,699 $ 32,722 $ 42,421 ILPT 9,803 8,126 17,929 4,243 4,719 8,962 OPI 10,640 80,083 90,723 9,320 50,527 59,847 SVC 10,721 10,412 21,133 12,000 2,800 14,800 Total Managed Equity REITs 38,372 139,939 178,311 35,262 90,768 126,030 SEVN 1,137 1,006 2,143 757 533 1,290 TRMT (2) — — — 377 1,218 1,595 39,509 140,945 180,454 36,396 92,519 128,915 Managed Private Real Estate Capital: (1) ABP Trust 1,048 5,473 6,521 1,073 5,457 6,530 Other private entities 4,182 11,042 15,224 1,065 1,429 2,494 5,230 16,515 21,745 2,138 6,886 9,024 Managed Operating Companies: ALR 1,239 99 1,338 1,794 104 1,898 Sonesta 2,491 46 2,537 1,522 91 1,613 TA 4,441 527 4,968 3,660 134 3,794 8,171 672 8,843 6,976 329 7,305 Total revenues from related parties 52,910 158,132 211,042 45,510 99,734 145,244 Revenues from unrelated parties 46 — 46 — — — $ 52,956 $ 158,132 $ 211,088 $ 45,510 $ 99,734 $ 145,244 (1) On December 23, 2021, DHC sold a 35% equity interest in its existing joint venture with an institutional investor. Following this sale, DHC owned a 20% equity interest in this joint venture. As a result, the management fees earned with respect to this joint venture are characterized as Managed Private Real Estate Capital for periods on and after December 23, 2021 and as Managed Public Real Estate Capital for periods prior to December 23, 2021. On June 29, 2022, DHC sold an additional 10% equity interest in this joint venture. Following this additional sale, DHC owns a 10% equity interest in this joint venture. (2) As discussed in Note 1, Basis of Presentation , TRMT merged with and into SEVN on September 30, 2021, with SEVN continuing as the surviving company. This table presents revenues for the three months ended June 30, 2021, for TRMT separately as they relate to a period prior to the Merger. For the nine months ended June 30, 2022 and 2021, we recognized revenues from related parties as set forth in the following table: Nine Months Ended June 30, 2022 Nine Months Ended June 30, 2021 Total Total Management Management and Advisory Total and Advisory Total Services Reimbursable Total Services Reimbursable Total Revenues Costs Revenues Revenues Costs Revenues Managed Public Real Estate Capital: (1) DHC $ 23,737 $ 109,241 $ 132,978 $ 27,273 $ 105,907 $ 133,180 ILPT 21,545 20,387 41,932 13,290 14,386 27,676 OPI 31,722 221,249 252,971 27,215 147,984 175,199 SVC 34,113 43,641 77,754 33,498 11,166 44,664 Total Managed Equity REITs 111,117 394,518 505,635 101,276 279,443 380,719 SEVN 3,392 4,563 7,955 2,057 1,474 3,531 TRMT (2) — — — 1,412 2,856 4,268 114,509 399,081 513,590 104,745 283,773 388,518 Managed Private Real Estate Capital: (1) ABP Trust 3,139 18,314 21,453 3,171 16,022 19,193 Other private entities 9,311 23,092 32,403 2,671 4,090 6,761 12,450 41,406 53,856 5,842 20,112 25,954 Managed Operating Companies: ALR 3,610 245 3,855 5,573 289 5,862 Sonesta 6,092 84 6,176 2,511 170 2,681 TA 11,499 1,235 12,734 9,904 576 10,480 21,201 1,564 22,765 17,988 1,035 19,023 Total revenues from related parties 148,160 442,051 590,211 128,575 304,920 433,495 Revenues from unrelated parties 99 — 99 259 — 259 $ 148,259 $ 442,051 $ 590,310 $ 128,834 $ 304,920 $ 433,754 (1) On December 23, 2021, DHC sold a 35% equity interest in its existing joint venture with an institutional investor. Following this sale, DHC owned a 20% equity interest in this joint venture. As a result, the management fees earned with respect to this joint venture are characterized as Managed Private Real Estate Capital for periods on and after December 23, 2021 and as Managed Public Real Estate Capital for periods prior to December 23, 2021. On June 29, 2022, DHC sold an additional 10% equity interest in this joint venture. Following this additional sale, DHC owns a 10% equity interest in this joint venture. (2) As discussed in Note 1, Basis of Presentation , TRMT merged with and into SEVN on September 30, 2021, with SEVN continuing as the surviving company. This table presents revenues for the nine months ended June 30, 2021, for TRMT separately as they relate to a period prior to the Merger. Amounts Due From Related Parties The following table represents amounts due from related parties as of the dates indicated: June 30, 2022 September 30, 2021 Accounts Reimbursable Accounts Reimbursable Receivable Costs Total Receivable Costs Total Managed Public Real Estate Capital: DHC $ 4,210 $ 18,860 $ 23,070 $ 6,005 $ 17,866 $ 23,871 ILPT 3,560 9,878 13,438 2,934 6,928 9,862 OPI 6,974 35,190 42,164 8,625 33,693 42,318 SVC 4,170 4,077 8,247 5,841 8,992 14,833 Total Managed Equity REITs 18,914 68,005 86,919 23,405 67,479 90,884 SEVN 1,063 802 1,865 1,717 1,180 2,897 19,977 68,807 88,784 25,122 68,659 93,781 Managed Private Real Estate Capital: ABP Trust 1,011 2,849 3,860 1,202 2,678 3,880 Other private entities 2,661 4,998 7,659 869 770 1,639 3,672 7,847 11,519 2,071 3,448 5,519 Managed Operating Companies: ALR 120 673 793 136 422 558 Sonesta (63) — (63) 17 — 17 TA 109 7,964 8,073 124 2,993 3,117 166 8,637 8,803 277 3,415 3,692 $ 23,815 $ 85,291 $ 109,106 $ 27,470 $ 75,522 $ 102,992 Leases As of June 30, 2022, RMR LLC leased from ABP Trust and certain Managed Equity REITs office space for use as our headquarters and local offices. We incurred rental expense under related party leases aggregating $1,470 and $1,420 for the three months ended June 30, 2022 and 2021, respectively, and $4,444 and $4,246 for the nine months ended June 30, 2022 and 2021, respectively. Tax-Related Payments Pursuant to our tax receivable agreement with ABP Trust, RMR Inc. pays to ABP Trust 85.0% of the amount of cash savings, if any, in U.S. federal, state and local income tax or franchise tax that RMR Inc. realizes as a result of (a) the increases in tax basis attributable to our dealings with ABP Trust and (b) tax benefits related to imputed interest deemed to be paid by us as a result of the tax receivable agreement. As of June 30, 2022, our condensed consolidated balance sheet reflects a liability related to the tax receivable agreement of $27,792, including $2,215 classified as a current liability in accounts payable and accrued expenses that we expect to pay to ABP Trust during the fourth quarter of fiscal year 2022. Under the RMR LLC operating agreement, RMR LLC is also required to make certain pro rata distributions to each member of RMR LLC quarterly on the basis of the estimated tax liabilities of its members, subject to future adjustment based on actual results. For the nine months ended June 30, 2022 and 2021, pursuant to the RMR LLC operating agreement, RMR LLC made required quarterly tax distributions to holders of its membership units totaling $21,969 and $23,201, respectively, of which $11,559 and $12,327, respectively, was distributed to us and $10,410 and $10,874, respectively, was distributed to ABP Trust, based on each membership unit holder’s respective ownership percentage. The amounts distributed to us were eliminated in our condensed consolidated financial statements, and the amounts distributed to ABP Trust were recorded as a reduction of its noncontrolling interest. We used funds from these distributions to pay certain of our U.S. federal and state income tax liabilities and to pay part of our obligations under the tax receivable agreement. Purchase of SEVN Shares On May 11, 2022, Tremont Realty Capital purchased 882,407 SEVN common shares of beneficial interest from Diane Portnoy, the mother of Adam D. Portnoy, for an aggregate purchase price of $9,469. As of June 30, 2022, Tremont Realty Capital owned 1,708,058 SEVN common shares, and Mr. Portnoy beneficially owned 13.5% of SEVN’s outstanding common shares of beneficial interest (including through Tremont Realty Capital). Separation Arrangements We entered into retirement agreements with certain of our former executive officers. Pursuant to these agreements, we made various cash payments and accelerated the vesting of unvested shares RMR Inc. previously awarded to these retiring officers. We also enter into separation arrangements from time to time with other nonexecutive officers and employees of ours. All costs associated with separation arrangements, for which there remain no substantive performance obligations, are recorded in our condensed consolidated statements of income as separation costs. In October 2020, we entered into a retirement agreement with David M. Blackman, a former Executive Vice President of RMR LLC. Under Mr. Blackman’s retirement agreement, RMR LLC paid combined cash payments in the amount of $2,850 to Mr. Blackman and $50 in related taxes. In addition, in October 2020, our Compensation Committee approved the acceleration of all 9,400 unvested shares owned by Mr. Blackman of us as of his retirement date, June 30, 2021. For the three and nine months ended June 30, 2022 and 2021, we recognized cash and equity based separation costs as set forth in the following table: Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Former executive officers: Cash separation costs $ — $ — $ — $ 2,900 Equity based separation costs — — — 295 — — — 3,195 Former nonexecutive officers: Cash separation costs (1) 252 — 469 805 Equity based separation costs 148 — 148 159 400 — 617 964 Total separation costs $ 400 $ — $ 617 $ 4,159 (1) During the nine months ended June 30, 2021, we were indemnified for a withdrawal liability of $515 that we had recorded during the three months ended September 30, 2020 related to a prior client’s shared pension plan accounted for as a multiemployer benefit plan.

Shareholders_ Equity

Shareholders’ Equity	9 Months Ended
	Jun. 30, 2022
Stockholders' Equity Note [Abstract]
Shareholders’ Equity	Shareholders’ Equity We award our Class A Common Shares to our Directors, officers and employees under the 2016 Omnibus Equity Plan adopted in 2016, or the 2016 Plan. Shares issued to Directors in that capacity vest immediately. Shares issued to employees in that capacity vest in five equal, consecutive, annual installments, with the first installment vesting on the date of award. We recognize forfeitures as they occur. Compensation expense related to share awards is determined based on the market value of our shares on the date of award, with the aggregate value of the awarded shares amortized to expense over the related vesting period. Expense recognized for shares awarded to Directors in that capacity are included in general and administrative expenses and for shares awarded to employees in that capacity are included in equity based compensation in our condensed consolidated statements of income. On March 10, 2022, we awarded 3,000 of our Class A Common Shares, valued at $30.36 per share, the closing price of our Class A Common Shares on The Nasdaq Stock Market LLC, or Nasdaq, on that day, to each of our Directors as part of his or her annual compensation for serving as a Director. For the nine months ended June 30, 2022, we recorded general and administrative expense of $547 for these awards. Equity based compensation expense related to shares awarded to certain officers and employees was $581 and $552 for the three months ended June 30, 2022 and 2021, respectively, and $1,823 and $1,656 for the nine months ended June 30, 2022 and 2021, respectively. As of June 30, 2022, we had 157,910 unvested shares outstanding which are scheduled to vest as follows: 57,690 shares in 2022, 47,920 shares in 2023, 34,140 shares in 2024 and 18,160 in 2025. In connection with the vesting and issuance of awards of our Class A Common Shares to our Directors, officers and employees, we provide for the ability to repurchase our Class A Common Shares to satisfy tax withholding and payment obligations. The repurchase price is based on the closing price of our Class A Common Shares on the Nasdaq. The aggregate value of 970 Class A Common Shares repurchased during the nine months ended June 30, 2022 was $31, which is recorded as a decrease to additional paid in capital within shareholders’ equity in our condensed consolidated balance sheets. In connection with the issuances and repurchases of our Class A Common Shares, and as required by the RMR LLC operating agreement, RMR LLC concurrently issues or acquires an identical number of Class A Units from RMR Inc. Distributions During the nine months ended June 30, 2022 and 2021, we declared and paid dividends on our Class A Common Shares and Class B-1 Common Shares as follows: Declaration Record Paid Distributions Total Date Date Date Per Common Share Distributions Nine Months Ended June 30, 2022 10/14/2021 10/25/2021 11/18/2021 $ 0.38 $ 6,264 1/13/2022 1/24/2022 2/17/2022 0.38 6,265 4/14/2022 4/25/2022 5/19/2022 0.40 6,601 $ 1.16 $ 19,130 Nine Months Ended June 30, 2021 10/15/2020 10/26/2020 11/19/2020 $ 0.38 $ 6,230 1/14/2021 1/25/2021 2/18/2021 0.38 6,230 4/15/2021 4/26/2021 5/20/2021 0.38 6,237 $ 1.14 $ 18,697 These dividends were funded in part by distributions from RMR LLC to holders of its membership units as follows: Distributions Per Total RMR LLC RMR LLC Declaration Record Paid RMR LLC RMR LLC Distributions Distributions Date Date Date Membership Unit Distributions to RMR Inc. to ABP Trust Nine Months Ended June 30, 2022 10/14/2021 10/25/2021 11/18/2021 $ 0.30 $ 9,446 $ 4,946 $ 4,500 1/13/2022 1/24/2022 2/17/2022 0.30 9,446 4,946 4,500 4/14/2022 4/25/2022 5/19/2022 0.32 10,080 5,280 4,800 $ 0.92 $ 28,972 $ 15,172 $ 13,800 Nine Months Ended June 30, 2021 10/15/2020 10/26/2020 11/19/2020 $ 0.30 $ 9,419 $ 4,919 $ 4,500 1/14/2021 1/25/2021 2/18/2021 0.30 9,419 4,919 4,500 4/15/2021 4/26/2021 5/20/2021 0.30 9,424 4,924 4,500 $ 0.90 $ 28,262 $ 14,762 $ 13,500 The remainder of the dividends noted above were funded with cash accumulated at RMR Inc. On July 14, 2022, we declared a quarterly dividend on our Class A Common Shares and Class B-1 Common Shares to our shareholders of record as of July 25, 2022, in the amount of $0.40 per Class A Common Share and Class B-1 Common Share, or $6,600. This dividend will be partially funded by a distribution from RMR LLC to holders of its membership units in the

Per Common Share Amounts

Per Common Share Amounts	9 Months Ended
	Jun. 30, 2022
Earnings Per Share [Abstract]
Per Common Share Amounts	Per Common Share Amounts We calculate basic earnings per share using the two-class method. Unvested Class A Common Shares awarded to our employees are deemed participating securities for purposes of calculating basic earnings per common share because they have dividend rights. Under the two-class method, we allocate earnings proportionately to vested Class A Common Shares and Class B-1 Common Shares outstanding and unvested Class A Common Shares outstanding for the period. Accordingly, earnings attributable to unvested Class A Common Shares are excluded from basic earnings per share under the two-class method. Our Class B-2 Common Shares, which are paired with ABP Trust’s Class A Units, have no independent economic interest in RMR Inc. and thus are not included as common shares outstanding for purposes of calculating basic earnings per common share. Diluted earnings per common share is calculated using the treasury stock method for unvested Class A Common Shares and the if-converted method for Class B-2 Common Shares. The 15,000,000 Class A Units that we do not own may be redeemed for our Class A Common Shares on a one-for-one basis, or upon such redemption, we may elect to pay cash instead of issuing Class A Common Shares. Upon redemption of a Class A Unit, the Class B-2 Common Share “paired” with such unit is canceled for no additional consideration. In computing the dilutive effect, if any, that the aforementioned redemption would have on earnings per share, we considered that net income available to holders of our Class A Common Shares would increase due to elimination of the noncontrolling interest offset by any tax effect, which may be dilutive. For the three and nine months ended June 30, 2022 and 2021, the assumed redemption is dilutive to earnings per share as presented in the table below. The calculation of basic and diluted earnings per share for the three and nine months ended June 30, 2022 and 2021, is as follows: Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Numerators: Net income attributable to The RMR Group Inc. $ 7,570 $ 8,232 $ 22,004 $ 22,070 Less: income attributable to unvested participating securities (72) (72) (213) (194) Net income attributable to The RMR Group Inc. used in calculating basic EPS 7,498 8,160 21,791 21,876 Effect of dilutive securities: Add back: income attributable to unvested participating securities 72 72 213 194 Add back: net income attributable to noncontrolling interest 9,695 10,797 28,142 28,192 Add back: income tax expense 2,943 3,361 8,448 8,109 Less: income tax expense assuming redemption of noncontrolling interest’s Class A Units for Class A Common Shares (1) (5,851) (6,686) (16,833) (17,346) Net income used in calculating diluted EPS $ 14,357 $ 15,704 $ 41,761 $ 41,025 Denominators: Common shares outstanding 16,501 16,408 16,501 16,408 Unvested participating securities (158) (139) (169) (149) Weighted average common shares outstanding - basic 16,343 16,269 16,332 16,259 Effect of dilutive securities: Assumed redemption of noncontrolling interest’s Class A Units for Class A Common Shares 15,000 15,000 15,000 15,000 Add: incremental unvested shares 10 39 10 12 Weighted average common shares outstanding - diluted 31,353 31,308 31,342 31,271 Net income attributable to The RMR Group Inc. per common share - basic $ 0.46 $ 0.50 $ 1.33 $ 1.35 Net income attributable to The RMR Group Inc. per common share - diluted $ 0.46 $ 0.50 $ 1.33 $ 1.31 (1) Income tax expense assumes the hypothetical conversion of the noncontrolling interest, which results in estimated tax rates of 29.0% and 29.9% for the three months ended June 30, 2022 and 2021, respectively, and 28.7% and 29.7% for the nine months ended June 30, 2022 and 2021, respectively.

Net Income Attributable to RMR

Net Income Attributable to RMR Inc.	9 Months Ended
	Jun. 30, 2022
Net Income Attributable to RMR Inc.
Net Income Attributable to RMR Inc.	Net Income Attributable to RMR Inc. Net income attributable to RMR Inc. for the three and nine months ended June 30, 2022 and 2021, is calculated as follows: Three Months Ended Nine Months Ended June 30, June 30, 2022 2021 2022 2021 Income before income tax expense $ 20,208 $ 22,390 $ 58,594 $ 58,371 RMR Inc. franchise tax expense and interest income 149 217 485 646 Net income before noncontrolling interest 20,357 22,607 59,079 59,017 Net income attributable to noncontrolling interest (9,695) (10,797) (28,142) (28,192) Net income attributable to RMR Inc. before income tax expense 10,662 11,810 30,937 30,825 Income tax expense attributable to RMR Inc. (2,943) (3,361) (8,448) (8,109) RMR Inc. franchise tax expense and interest income (149) (217) (485) (646) Net income attributable to RMR Inc. $ 7,570 $ 8,232 $ 22,004 $ 22,070

Segment Reporting

Segment Reporting	9 Months Ended
	Jun. 30, 2022
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We have one reportable business segment, which is RMR LLC. In the tables below, our All Other Operations includes the operations of RMR Inc., Tremont Realty Capital and until January 5, 2021, RMR Advisors LLC. Three Months Ended June 30, 2022 All Other RMR LLC (1) Operations Total Revenues: Management services $ 51,773 $ 46 $ 51,819 Advisory services — 1,137 1,137 Total management and advisory services revenues 51,773 1,183 52,956 Reimbursable compensation and benefits 13,470 719 14,189 Reimbursable equity based compensation (69) — (69) Other reimbursable expenses 144,012 — 144,012 Total reimbursable costs 157,413 719 158,132 Total revenues 209,186 1,902 211,088 Expenses: Compensation and benefits 30,743 1,427 32,170 Equity based compensation 61 451 512 Separation costs 400 — 400 Total compensation and benefits expense 31,204 1,878 33,082 General and administrative 7,300 1,023 8,323 Other reimbursable expenses 144,012 — 144,012 Depreciation and amortization 244 9 253 Total expenses 182,760 2,910 185,670 Operating income (loss) 26,426 (1,008) 25,418 Interest and other income 253 26 279 Unrealized loss on equity method investments accounted for under the fair value option (5,280) (209) (5,489) Income (loss) before income tax expense 21,399 (1,191) 20,208 Income tax expense — (2,943) (2,943) Net income (loss) $ 21,399 $ (4,134) $ 17,265 Total assets $ 485,799 $ 45,237 $ 531,036 (1) Intersegment revenues of $1,483 recognized by RMR LLC for services provided to our All Other Operations segment have been eliminated in the condensed consolidated financial statements. Three Months Ended June 30, 2021 All Other RMR LLC (1) Operations Total Revenues: Management services $ 44,376 $ — $ 44,376 Advisory services — 1,134 1,134 Total management and advisory services revenues 44,376 1,134 45,510 Reimbursable compensation and benefits 12,561 508 13,069 Reimbursable equity based compensation 1,402 — 1,402 Other reimbursable expenses 85,263 — 85,263 Total reimbursable costs 99,226 508 99,734 Total revenues 143,602 1,642 145,244 Expenses: Compensation and benefits 29,541 989 30,530 Equity based compensation 1,922 32 1,954 Total compensation and benefits expense 31,463 1,021 32,484 General and administrative 5,335 985 6,320 Other reimbursable expenses 85,263 — 85,263 Transaction and acquisition related costs 45 16 61 Depreciation and amortization 234 11 245 Total expenses 122,340 2,033 124,373 Operating income (loss) 21,262 (391) 20,871 Interest and other income 171 8 179 Equity in earnings of investees — 28 28 Unrealized gain on equity method investment accounted for under the fair value option 1,312 — 1,312 Income (loss) before income tax expense 22,745 (355) 22,390 Income tax expense — (3,361) (3,361) Net income (loss) $ 22,745 $ (3,716) $ 19,029 Total assets $ 674,378 $ 50,211 $ 724,589 (1) Intersegment revenues of $801 recognized by RMR LLC for services provided to our All Other Operations segment have been eliminated in the condensed consolidated financial statements. Nine Months Ended June 30, 2022 All Other RMR LLC (1) Operations Total Revenues: Management services $ 144,768 $ 99 $ 144,867 Advisory services — 3,392 3,392 Total management and advisory services revenues 144,768 3,491 148,259 Reimbursable compensation and benefits 40,139 1,953 42,092 Reimbursable equity based compensation 2,896 — 2,896 Other reimbursable expenses 397,063 — 397,063 Total reimbursable costs 440,098 1,953 442,051 Total revenues 584,866 5,444 590,310 Expenses: Compensation and benefits 91,906 3,765 95,671 Equity based compensation 3,996 723 4,719 Separation costs 617 — 617 Total compensation and benefits expense 96,519 4,488 101,007 General and administrative 21,370 3,094 24,464 Other reimbursable expenses 397,063 — 397,063 Depreciation and amortization 704 27 731 Total expenses 515,656 7,609 523,265 Operating income (loss) 69,210 (2,165) 67,045 Interest and other income 361 41 402 Unrealized (loss) gain on equity method investments accounted for under the fair value option (9,528) 675 (8,853) Income (loss) before income tax expense 60,043 (1,449) 58,594 Income tax expense — (8,448) (8,448) Net income (loss) $ 60,043 $ (9,897) $ 50,146 Total assets $ 485,799 $ 45,237 $ 531,036 (1) Intersegment revenues of $3,565 recognized by RMR LLC for services provided to our All Other Operations segment have been eliminated in the condensed consolidated financial statements. Nine Months Ended June 30, 2021 All Other RMR LLC (1) Operations Total Revenues: Management services $ 125,106 $ 259 $ 125,365 Incentive business management fees — 620 620 Advisory services — 2,849 2,849 Total management and advisory services revenues 125,106 3,728 128,834 Reimbursable compensation and benefits 38,018 1,435 39,453 Reimbursable equity based compensation 5,611 — 5,611 Other reimbursable expenses 259,856 — 259,856 Total reimbursable costs 303,485 1,435 304,920 Total revenues 428,591 5,163 433,754 Expenses: Compensation and benefits 86,517 4,093 90,610 Equity based compensation 7,160 107 7,267 Separation costs 4,159 — 4,159 Total compensation and benefits expense 97,836 4,200 102,036 General and administrative 16,690 2,994 19,684 Other reimbursable expenses 259,856 — 259,856 Transaction and acquisition related costs 409 65 474 Depreciation and amortization 702 32 734 Total expenses 375,493 7,291 382,784 Operating income (loss) 53,098 (2,128) 50,970 Interest and other income 585 29 614 Equity in earnings of investees — 755 755 Unrealized gain on equity method investment accounted for under the fair value option 6,032 — 6,032 Income (loss) before income tax expense 59,715 (1,344) 58,371 Income tax expense — (8,109) (8,109) Net income (loss) $ 59,715 $ (9,453) $ 50,262 Total assets $ 674,378 $ 50,211 $ 724,589

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Schedule of reconciliation of the statutory income tax rate to the effective tax rate	A reconciliation of the statutory income tax rate to the effective tax rate is as follows: Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Income taxes computed at the federal statutory rate 21.0 % 21.0 % 21.0 % 21.0 % State taxes, net of federal benefit 3.1 % 3.2 % 3.1 % 3.2 % Permanent items 0.6 % 0.9 % 0.4 % 0.7 % Net income attributable to noncontrolling interest (10.1) % (10.1) % (10.1) % (10.1) % Other (1) — % — % — % (0.9) % Total 14.6 % 15.0 % 14.4 % 13.9 % (1) In December 2020, the Internal Revenue Service and Department of Treasury released final regulations which, among other clarifications, established the effective date as it relates to limitations on the deductibility of certain executive compensation. The final regulations provide that the application of the limit applies to deductions after December 18, 2020. As such, during the three months ended December 31, 2020, we reduced our provision for income taxes for limitations applied prior to the effective date by $520, or $0.02 per diluted share.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value	The following are our assets and liabilities that have been measured at fair value using Level 1 inputs in the fair value hierarchy as of June 30, 2022 and September 30, 2021: June 30, September 30, 2022 2021 Money market funds included in cash and cash equivalents $ 175,459 $ 131,065 Current portion of due from related parties related to share based payment awards 2,804 6,076 Long term portion of due from related parties related to share based payment awards 15,167 14,331 Equity method investment in SEVN 18,242 8,513 Equity method investment in TA 21,435 30,963 Current portion of employer compensation liability related to share based payment awards 2,804 6,076 Long term portion of employer compensation liability related to share based payment awards 15,167 14,331

Related Person Transactions (Ta

Related Person Transactions (Tables)	9 Months Ended
	Jun. 30, 2022
Related Party Transactions [Abstract]
Schedule of related party transactions	For the three months ended June 30, 2022 and 2021, we recognized revenues from related parties as set forth in the following table: Three Months Ended June 30, 2022 Three Months Ended June 30, 2021 Total Total Management Management and Advisory Total and Advisory Total Services Reimbursable Total Services Reimbursable Total Revenues Costs Revenues Revenues Costs Revenues Managed Public Real Estate Capital: (1) DHC $ 7,208 $ 41,318 $ 48,526 $ 9,699 $ 32,722 $ 42,421 ILPT 9,803 8,126 17,929 4,243 4,719 8,962 OPI 10,640 80,083 90,723 9,320 50,527 59,847 SVC 10,721 10,412 21,133 12,000 2,800 14,800 Total Managed Equity REITs 38,372 139,939 178,311 35,262 90,768 126,030 SEVN 1,137 1,006 2,143 757 533 1,290 TRMT (2) — — — 377 1,218 1,595 39,509 140,945 180,454 36,396 92,519 128,915 Managed Private Real Estate Capital: (1) ABP Trust 1,048 5,473 6,521 1,073 5,457 6,530 Other private entities 4,182 11,042 15,224 1,065 1,429 2,494 5,230 16,515 21,745 2,138 6,886 9,024 Managed Operating Companies: ALR 1,239 99 1,338 1,794 104 1,898 Sonesta 2,491 46 2,537 1,522 91 1,613 TA 4,441 527 4,968 3,660 134 3,794 8,171 672 8,843 6,976 329 7,305 Total revenues from related parties 52,910 158,132 211,042 45,510 99,734 145,244 Revenues from unrelated parties 46 — 46 — — — $ 52,956 $ 158,132 $ 211,088 $ 45,510 $ 99,734 $ 145,244 (1) On December 23, 2021, DHC sold a 35% equity interest in its existing joint venture with an institutional investor. Following this sale, DHC owned a 20% equity interest in this joint venture. As a result, the management fees earned with respect to this joint venture are characterized as Managed Private Real Estate Capital for periods on and after December 23, 2021 and as Managed Public Real Estate Capital for periods prior to December 23, 2021. On June 29, 2022, DHC sold an additional 10% equity interest in this joint venture. Following this additional sale, DHC owns a 10% equity interest in this joint venture. (2) As discussed in Note 1, Basis of Presentation , TRMT merged with and into SEVN on September 30, 2021, with SEVN continuing as the surviving company. This table presents revenues for the three months ended June 30, 2021, for TRMT separately as they relate to a period prior to the Merger. For the nine months ended June 30, 2022 and 2021, we recognized revenues from related parties as set forth in the following table: Nine Months Ended June 30, 2022 Nine Months Ended June 30, 2021 Total Total Management Management and Advisory Total and Advisory Total Services Reimbursable Total Services Reimbursable Total Revenues Costs Revenues Revenues Costs Revenues Managed Public Real Estate Capital: (1) DHC $ 23,737 $ 109,241 $ 132,978 $ 27,273 $ 105,907 $ 133,180 ILPT 21,545 20,387 41,932 13,290 14,386 27,676 OPI 31,722 221,249 252,971 27,215 147,984 175,199 SVC 34,113 43,641 77,754 33,498 11,166 44,664 Total Managed Equity REITs 111,117 394,518 505,635 101,276 279,443 380,719 SEVN 3,392 4,563 7,955 2,057 1,474 3,531 TRMT (2) — — — 1,412 2,856 4,268 114,509 399,081 513,590 104,745 283,773 388,518 Managed Private Real Estate Capital: (1) ABP Trust 3,139 18,314 21,453 3,171 16,022 19,193 Other private entities 9,311 23,092 32,403 2,671 4,090 6,761 12,450 41,406 53,856 5,842 20,112 25,954 Managed Operating Companies: ALR 3,610 245 3,855 5,573 289 5,862 Sonesta 6,092 84 6,176 2,511 170 2,681 TA 11,499 1,235 12,734 9,904 576 10,480 21,201 1,564 22,765 17,988 1,035 19,023 Total revenues from related parties 148,160 442,051 590,211 128,575 304,920 433,495 Revenues from unrelated parties 99 — 99 259 — 259 $ 148,259 $ 442,051 $ 590,310 $ 128,834 $ 304,920 $ 433,754 (1) On December 23, 2021, DHC sold a 35% equity interest in its existing joint venture with an institutional investor. Following this sale, DHC owned a 20% equity interest in this joint venture. As a result, the management fees earned with respect to this joint venture are characterized as Managed Private Real Estate Capital for periods on and after December 23, 2021 and as Managed Public Real Estate Capital for periods prior to December 23, 2021. On June 29, 2022, DHC sold an additional 10% equity interest in this joint venture. Following this additional sale, DHC owns a 10% equity interest in this joint venture. (2) As discussed in Note 1, Basis of Presentation , TRMT merged with and into SEVN on September 30, 2021, with SEVN continuing as the surviving company. This table presents revenues for the nine months ended June 30, 2021, for TRMT separately as they relate to a period prior to the Merger. Amounts Due From Related Parties The following table represents amounts due from related parties as of the dates indicated: June 30, 2022 September 30, 2021 Accounts Reimbursable Accounts Reimbursable Receivable Costs Total Receivable Costs Total Managed Public Real Estate Capital: DHC $ 4,210 $ 18,860 $ 23,070 $ 6,005 $ 17,866 $ 23,871 ILPT 3,560 9,878 13,438 2,934 6,928 9,862 OPI 6,974 35,190 42,164 8,625 33,693 42,318 SVC 4,170 4,077 8,247 5,841 8,992 14,833 Total Managed Equity REITs 18,914 68,005 86,919 23,405 67,479 90,884 SEVN 1,063 802 1,865 1,717 1,180 2,897 19,977 68,807 88,784 25,122 68,659 93,781 Managed Private Real Estate Capital: ABP Trust 1,011 2,849 3,860 1,202 2,678 3,880 Other private entities 2,661 4,998 7,659 869 770 1,639 3,672 7,847 11,519 2,071 3,448 5,519 Managed Operating Companies: ALR 120 673 793 136 422 558 Sonesta (63) — (63) 17 — 17 TA 109 7,964 8,073 124 2,993 3,117 166 8,637 8,803 277 3,415 3,692 $ 23,815 $ 85,291 $ 109,106 $ 27,470 $ 75,522 $ 102,992 For the three and nine months ended June 30, 2022 and 2021, we recognized cash and equity based separation costs as set forth in the following table: Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Former executive officers: Cash separation costs $ — $ — $ — $ 2,900 Equity based separation costs — — — 295 — — — 3,195 Former nonexecutive officers: Cash separation costs (1) 252 — 469 805 Equity based separation costs 148 — 148 159 400 — 617 964 Total separation costs $ 400 $ — $ 617 $ 4,159 (1) During the nine months ended June 30, 2021, we were indemnified for a withdrawal liability of $515 that we had recorded during the three months ended September 30, 2020 related to a prior client’s shared pension plan accounted for as a multiemployer benefit plan.

Shareholders_ Equity (Tables)

Shareholders’ Equity (Tables)	9 Months Ended
	Jun. 30, 2022
Stockholders' Equity Note [Abstract]
Schedule of dividends declared	During the nine months ended June 30, 2022 and 2021, we declared and paid dividends on our Class A Common Shares and Class B-1 Common Shares as follows: Declaration Record Paid Distributions Total Date Date Date Per Common Share Distributions Nine Months Ended June 30, 2022 10/14/2021 10/25/2021 11/18/2021 $ 0.38 $ 6,264 1/13/2022 1/24/2022 2/17/2022 0.38 6,265 4/14/2022 4/25/2022 5/19/2022 0.40 6,601 $ 1.16 $ 19,130 Nine Months Ended June 30, 2021 10/15/2020 10/26/2020 11/19/2020 $ 0.38 $ 6,230 1/14/2021 1/25/2021 2/18/2021 0.38 6,230 4/15/2021 4/26/2021 5/20/2021 0.38 6,237 $ 1.14 $ 18,697 These dividends were funded in part by distributions from RMR LLC to holders of its membership units as follows: Distributions Per Total RMR LLC RMR LLC Declaration Record Paid RMR LLC RMR LLC Distributions Distributions Date Date Date Membership Unit Distributions to RMR Inc. to ABP Trust Nine Months Ended June 30, 2022 10/14/2021 10/25/2021 11/18/2021 $ 0.30 $ 9,446 $ 4,946 $ 4,500 1/13/2022 1/24/2022 2/17/2022 0.30 9,446 4,946 4,500 4/14/2022 4/25/2022 5/19/2022 0.32 10,080 5,280 4,800 $ 0.92 $ 28,972 $ 15,172 $ 13,800 Nine Months Ended June 30, 2021 10/15/2020 10/26/2020 11/19/2020 $ 0.30 $ 9,419 $ 4,919 $ 4,500 1/14/2021 1/25/2021 2/18/2021 0.30 9,419 4,919 4,500 4/15/2021 4/26/2021 5/20/2021 0.30 9,424 4,924 4,500 $ 0.90 $ 28,262 $ 14,762 $ 13,500

Per Common Share Amounts (Table

Per Common Share Amounts (Tables)	9 Months Ended
	Jun. 30, 2022
Earnings Per Share [Abstract]
Schedule of earnings per share	The calculation of basic and diluted earnings per share for the three and nine months ended June 30, 2022 and 2021, is as follows: Three Months Ended June 30, Nine Months Ended June 30, 2022 2021 2022 2021 Numerators: Net income attributable to The RMR Group Inc. $ 7,570 $ 8,232 $ 22,004 $ 22,070 Less: income attributable to unvested participating securities (72) (72) (213) (194) Net income attributable to The RMR Group Inc. used in calculating basic EPS 7,498 8,160 21,791 21,876 Effect of dilutive securities: Add back: income attributable to unvested participating securities 72 72 213 194 Add back: net income attributable to noncontrolling interest 9,695 10,797 28,142 28,192 Add back: income tax expense 2,943 3,361 8,448 8,109 Less: income tax expense assuming redemption of noncontrolling interest’s Class A Units for Class A Common Shares (1) (5,851) (6,686) (16,833) (17,346) Net income used in calculating diluted EPS $ 14,357 $ 15,704 $ 41,761 $ 41,025 Denominators: Common shares outstanding 16,501 16,408 16,501 16,408 Unvested participating securities (158) (139) (169) (149) Weighted average common shares outstanding - basic 16,343 16,269 16,332 16,259 Effect of dilutive securities: Assumed redemption of noncontrolling interest’s Class A Units for Class A Common Shares 15,000 15,000 15,000 15,000 Add: incremental unvested shares 10 39 10 12 Weighted average common shares outstanding - diluted 31,353 31,308 31,342 31,271 Net income attributable to The RMR Group Inc. per common share - basic $ 0.46 $ 0.50 $ 1.33 $ 1.35 Net income attributable to The RMR Group Inc. per common share - diluted $ 0.46 $ 0.50 $ 1.33 $ 1.31 (1) Income tax expense assumes the hypothetical conversion of the noncontrolling interest, which results in estimated tax rates of 29.0% and 29.9% for the three months ended June 30, 2022 and 2021, respectively, and 28.7% and 29.7% for the nine months ended June 30, 2022 and 2021, respectively.

Net Income Attributable to RM_2

Net Income Attributable to RMR Inc. (Tables)	9 Months Ended
	Jun. 30, 2022
Net Income Attributable to RMR Inc.
Schedule of net income attributable to parent	Net income attributable to RMR Inc. for the three and nine months ended June 30, 2022 and 2021, is calculated as follows: Three Months Ended Nine Months Ended June 30, June 30, 2022 2021 2022 2021 Income before income tax expense $ 20,208 $ 22,390 $ 58,594 $ 58,371 RMR Inc. franchise tax expense and interest income 149 217 485 646 Net income before noncontrolling interest 20,357 22,607 59,079 59,017 Net income attributable to noncontrolling interest (9,695) (10,797) (28,142) (28,192) Net income attributable to RMR Inc. before income tax expense 10,662 11,810 30,937 30,825 Income tax expense attributable to RMR Inc. (2,943) (3,361) (8,448) (8,109) RMR Inc. franchise tax expense and interest income (149) (217) (485) (646) Net income attributable to RMR Inc. $ 7,570 $ 8,232 $ 22,004 $ 22,070

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Jun. 30, 2022
Segment Reporting [Abstract]
Schedule of segment reporting information	Three Months Ended June 30, 2022 All Other RMR LLC (1) Operations Total Revenues: Management services $ 51,773 $ 46 $ 51,819 Advisory services — 1,137 1,137 Total management and advisory services revenues 51,773 1,183 52,956 Reimbursable compensation and benefits 13,470 719 14,189 Reimbursable equity based compensation (69) — (69) Other reimbursable expenses 144,012 — 144,012 Total reimbursable costs 157,413 719 158,132 Total revenues 209,186 1,902 211,088 Expenses: Compensation and benefits 30,743 1,427 32,170 Equity based compensation 61 451 512 Separation costs 400 — 400 Total compensation and benefits expense 31,204 1,878 33,082 General and administrative 7,300 1,023 8,323 Other reimbursable expenses 144,012 — 144,012 Depreciation and amortization 244 9 253 Total expenses 182,760 2,910 185,670 Operating income (loss) 26,426 (1,008) 25,418 Interest and other income 253 26 279 Unrealized loss on equity method investments accounted for under the fair value option (5,280) (209) (5,489) Income (loss) before income tax expense 21,399 (1,191) 20,208 Income tax expense — (2,943) (2,943) Net income (loss) $ 21,399 $ (4,134) $ 17,265 Total assets $ 485,799 $ 45,237 $ 531,036 (1) Intersegment revenues of $1,483 recognized by RMR LLC for services provided to our All Other Operations segment have been eliminated in the condensed consolidated financial statements. Three Months Ended June 30, 2021 All Other RMR LLC (1) Operations Total Revenues: Management services $ 44,376 $ — $ 44,376 Advisory services — 1,134 1,134 Total management and advisory services revenues 44,376 1,134 45,510 Reimbursable compensation and benefits 12,561 508 13,069 Reimbursable equity based compensation 1,402 — 1,402 Other reimbursable expenses 85,263 — 85,263 Total reimbursable costs 99,226 508 99,734 Total revenues 143,602 1,642 145,244 Expenses: Compensation and benefits 29,541 989 30,530 Equity based compensation 1,922 32 1,954 Total compensation and benefits expense 31,463 1,021 32,484 General and administrative 5,335 985 6,320 Other reimbursable expenses 85,263 — 85,263 Transaction and acquisition related costs 45 16 61 Depreciation and amortization 234 11 245 Total expenses 122,340 2,033 124,373 Operating income (loss) 21,262 (391) 20,871 Interest and other income 171 8 179 Equity in earnings of investees — 28 28 Unrealized gain on equity method investment accounted for under the fair value option 1,312 — 1,312 Income (loss) before income tax expense 22,745 (355) 22,390 Income tax expense — (3,361) (3,361) Net income (loss) $ 22,745 $ (3,716) $ 19,029 Total assets $ 674,378 $ 50,211 $ 724,589 (1) Intersegment revenues of $801 recognized by RMR LLC for services provided to our All Other Operations segment have been eliminated in the condensed consolidated financial statements. Nine Months Ended June 30, 2022 All Other RMR LLC (1) Operations Total Revenues: Management services $ 144,768 $ 99 $ 144,867 Advisory services — 3,392 3,392 Total management and advisory services revenues 144,768 3,491 148,259 Reimbursable compensation and benefits 40,139 1,953 42,092 Reimbursable equity based compensation 2,896 — 2,896 Other reimbursable expenses 397,063 — 397,063 Total reimbursable costs 440,098 1,953 442,051 Total revenues 584,866 5,444 590,310 Expenses: Compensation and benefits 91,906 3,765 95,671 Equity based compensation 3,996 723 4,719 Separation costs 617 — 617 Total compensation and benefits expense 96,519 4,488 101,007 General and administrative 21,370 3,094 24,464 Other reimbursable expenses 397,063 — 397,063 Depreciation and amortization 704 27 731 Total expenses 515,656 7,609 523,265 Operating income (loss) 69,210 (2,165) 67,045 Interest and other income 361 41 402 Unrealized (loss) gain on equity method investments accounted for under the fair value option (9,528) 675 (8,853) Income (loss) before income tax expense 60,043 (1,449) 58,594 Income tax expense — (8,448) (8,448) Net income (loss) $ 60,043 $ (9,897) $ 50,146 Total assets $ 485,799 $ 45,237 $ 531,036 (1) Intersegment revenues of $3,565 recognized by RMR LLC for services provided to our All Other Operations segment have been eliminated in the condensed consolidated financial statements. Nine Months Ended June 30, 2021 All Other RMR LLC (1) Operations Total Revenues: Management services $ 125,106 $ 259 $ 125,365 Incentive business management fees — 620 620 Advisory services — 2,849 2,849 Total management and advisory services revenues 125,106 3,728 128,834 Reimbursable compensation and benefits 38,018 1,435 39,453 Reimbursable equity based compensation 5,611 — 5,611 Other reimbursable expenses 259,856 — 259,856 Total reimbursable costs 303,485 1,435 304,920 Total revenues 428,591 5,163 433,754 Expenses: Compensation and benefits 86,517 4,093 90,610 Equity based compensation 7,160 107 7,267 Separation costs 4,159 — 4,159 Total compensation and benefits expense 97,836 4,200 102,036 General and administrative 16,690 2,994 19,684 Other reimbursable expenses 259,856 — 259,856 Transaction and acquisition related costs 409 65 474 Depreciation and amortization 702 32 734 Total expenses 375,493 7,291 382,784 Operating income (loss) 53,098 (2,128) 50,970 Interest and other income 585 29 614 Equity in earnings of investees — 755 755 Unrealized gain on equity method investment accounted for under the fair value option 6,032 — 6,032 Income (loss) before income tax expense 59,715 (1,344) 58,371 Income tax expense — (8,109) (8,109) Net income (loss) $ 59,715 $ (9,453) $ 50,262 Total assets $ 674,378 $ 50,211 $ 724,589

Basis of Presentation (Details)

Basis of Presentation (Details)	9 Months Ended
	Jun. 30, 2022 company real_estate_investment_trust shares
Related Party Transaction [Line Items]
Number of managed trusts | real_estate_investment_trust	4
Number of real estate operating companies | company	3
RMR LLC
Related Party Transaction [Line Items]
Ownership percentage	52.40%
Class B membership units
Related Party Transaction [Line Items]
Membership units (in shares)	1,000,000
Class A Common Stock | Class A membership units
Related Party Transaction [Line Items]
Membership units (in shares)	15,500,716
Capital Unit Redeemable Class A Units | ABP Trust
Related Party Transaction [Line Items]
Membership units (in shares)	15,000,000
Capital Unit Redeemable Class A Units | ABP Trust | RMR LLC
Related Party Transaction [Line Items]
Ownership percentage	47.60%

Revenue Recognition - Business

Revenue Recognition - Business Management Agreements with Managed Equity REITs (Details) - Managed Equity REITs - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Business Management and Incentive Fees
Business management fees as a percentage of transferred real estate assets			0.50%
Business management fees as a percentage of average invested capital below the threshold limit			0.70%
Maximum threshold amount for calculating the business management fees	$ 250,000,000		$ 250,000,000
Business management fees as a percentage of average invested capital above the threshold limit			0.50%
Minimum threshold amount for calculating the business management fees	250,000,000		$ 250,000,000
Business management fees as a percent of average market capitalization below the threshold limit			0.70%
Business management fees as a percent of average market capitalization above the threshold limit			0.50%
Aggregate base business management fees	$ 25,446,000	$ 24,471,000	$ 73,085,000	$ 68,599,000
Contingent incentive business management fee percentage			12%
Aggregate incentive business management fees					$ 0	$ 0

Revenue Recognition - Other Man

Revenue Recognition - Other Management Agreements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Managed Operating Companies
Related Party Transaction [Line Items]
Business management fee percent based on management agreements			0.60%
Aggregate business management fees	$ 8,171	$ 6,976	$ 21,201	$ 17,988
ABP Trust, AIC, The Industrial Fund and The Open End Fund
Related Party Transaction [Line Items]
Aggregate business management fees	$ 2,936	$ 1,276	$ 7,095	$ 3,463

Revenue Recognition - Property

Revenue Recognition - Property Management Fees (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue Recognition [Abstract]
Property management fee percent based on gross collected rents			3%
Property management fee percent based on the cost of construction			5%
Aggregate property management fees	$ 15,220	$ 11,653	$ 43,387	$ 35,056
construction supervision fees	$ 4,596	$ 2,178	$ 11,623	$ 6,007

Revenue Recognition - Advisory

Revenue Recognition - Advisory Agreements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Related Party Transaction [Line Items]
Total revenues	$ 211,088,000	$ 145,244,000	$ 590,310,000	$ 433,754,000
Tremont Advisors
Related Party Transaction [Line Items]
Business management fee percent based on management agreements			1.50%
Total revenues		0		620,000
Incentive fee percentage condition 1			20%
Incentive fee percentage condition 2			7%
Tremont Advisors | Minimum
Related Party Transaction [Line Items]
Advisory fee percentage based on aggregate principal amounts of loan originate			0.50%
Tremont Advisors | Maximum
Related Party Transaction [Line Items]
Advisory fee percentage based on aggregate principal amounts of loan originate			1%
Advisory services
Related Party Transaction [Line Items]
Total revenues	1,137,000	1,134,000	$ 3,392,000	2,849,000
Advisory services | Tremont Advisors
Related Party Transaction [Line Items]
Total revenues	1,137,000	1,134,000	3,392,000	2,849,000
Management services
Related Party Transaction [Line Items]
Total revenues	51,819,000	44,376,000	144,867,000	125,365,000
Tremont Advisors | Management services
Related Party Transaction [Line Items]
Total revenues	46,000	$ 0	99,000	$ 259,000
SEVN | Incentive fees | Tremont Advisors
Related Party Transaction [Line Items]
Total revenues	$ 0		$ 0

Equity Method Investments (Deta

Equity Method Investments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May 11, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Purchase price				$ 9,469	$ 0
Equity method investments accounted for under the fair value option		$ 39,677		39,677		$ 39,476
Unrealized (loss) gain on equity method investments accounted for under the fair value option		(5,489)	$ 1,312	(8,853)	6,032
Equity in earnings of investees		0	28	0	755
Distributions from equity method investments				415	1,024
SEVN
Schedule of Equity Method Investments [Line Items]
Unrealized (loss) gain on equity method investments accounted for under the fair value option		(209)	207	675	415
SEVN | Level 1 | Recurring basis
Schedule of Equity Method Investments [Line Items]
Equity method investments accounted for under the fair value option		18,242		18,242		8,513
TRMT
Schedule of Equity Method Investments [Line Items]
Distributions from equity method investments			160		1,024
TA
Schedule of Equity Method Investments [Line Items]
Unrealized (loss) gain on equity method investments accounted for under the fair value option		(5,280)	$ 1,312	(9,528)	$ 6,032
TA | Level 1 | Recurring basis
Schedule of Equity Method Investments [Line Items]
Equity method investments accounted for under the fair value option		$ 21,435		$ 21,435		$ 30,963
Tremont Reality Capital
Schedule of Equity Method Investments [Line Items]
Shares issued per converted share (in shares)		0.516		0.516
Tremont Reality Capital | SEVN
Schedule of Equity Method Investments [Line Items]
Number of shares owned (in shares)		1,708,058		1,708,058
Ownership percentage		11.70%		11.70%
Number of shares purchased (in shares)	882,407
Purchase price	$ 9,469
Tremont Reality Capital | TRMT
Schedule of Equity Method Investments [Line Items]
Number of shares owned (in shares)						1,600,100
Ownership percentage						19.30%
RMR LLC | TA
Schedule of Equity Method Investments [Line Items]
Number of shares owned (in shares)		621,853		621,853
Ownership percentage		4.20%		4.20%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income tax expense	$ 2,943	$ 3,361	$ 8,448	$ 8,109
Federal income tax expense	2,162	2,467	6,205	5,953
State income tax expense	$ 781	$ 894	$ 2,243	$ 2,156

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Tax Rate (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income taxes computed at the federal statutory rate	21%	21%		21%	21%
State taxes, net of federal benefit	3.10%	3.20%		3.10%	3.20%
Permanent items	0.60%	0.90%		0.40%	0.70%
Net income attributable to noncontrolling interest	(10.10%)	(10.10%)		(10.10%)	(10.10%)
Other	0%	0%		0%	(0.90%)
Total	14.60%	15%		14.40%	13.90%
Reduction in provision for other adjustments			$ 520
Reduction in provision for other adjustments, impact on diluted earnings per share (in usd per share)			$ 0.02

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Schedule of assets and liabilities measured at fair value
Equity method investment	$ 39,677	$ 39,476
Recurring basis | Level 1
Schedule of assets and liabilities measured at fair value
Money market funds included in cash and cash equivalents	175,459	131,065
Current portion of due from related parties related to share based payment awards	2,804	6,076
Long term portion of due from related parties related to share based payment awards	15,167	14,331
Current portion of employer compensation liability related to share based payment awards	2,804	6,076
Long term portion of employer compensation liability related to share based payment awards	15,167	14,331
Recurring basis | Level 1 | SEVN
Schedule of assets and liabilities measured at fair value
Equity method investment	18,242	8,513
Recurring basis | Level 1 | TA
Schedule of assets and liabilities measured at fair value
Equity method investment	$ 21,435	$ 30,963

Related Person Transactions - N

Related Person Transactions - Narrative (Details)	Jun. 30, 2022 shares
ALR
Related Party Transaction [Line Items]
Ownership percentage	6.20%
SVC
Related Party Transaction [Line Items]
Ownership percentage	1.10%
ILPT
Related Party Transaction [Line Items]
Ownership percentage	1.20%
OPI
Related Party Transaction [Line Items]
Ownership percentage	1.50%
DHC
Related Party Transaction [Line Items]
Ownership percentage	1.10%
TA
Related Party Transaction [Line Items]
Ownership percentage	4.50%
SEVN
Related Party Transaction [Line Items]
Ownership percentage	13.50%
ABP Trust | Class A Common Stock
Related Party Transaction [Line Items]
Common stock shares outstanding (in shares)	173,502
ABP Trust | Class A Units
Related Party Transaction [Line Items]
Common stock shares outstanding (in shares)	15,000,000

Related Person Transactions - R

Related Person Transactions - Revenues from Related Parties (Details) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Jun. 29, 2022	Dec. 23, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Related Party Transaction [Line Items]
Total revenues from related parties			$ 211,042	$ 145,244	$ 590,211	$ 433,495
Revenues from unrelated parties			46	0	99	259
Total revenues			211,088	145,244	590,310	433,754
DHC | Joint Venture With Institutional Investor
Related Party Transaction [Line Items]
Percentage of ownership sold	10%	35%
Ownership percentage	10%	20%
Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			52,910	45,510	148,160	128,575
Revenues from unrelated parties			46	0	99	259
Total revenues			52,956	45,510	148,259	128,834
Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			158,132	99,734	442,051	304,920
Revenues from unrelated parties			0	0	0	0
Total revenues			158,132	99,734	442,051	304,920
Managed Public Real Estate Capital
Related Party Transaction [Line Items]
Total revenues from related parties			180,454	128,915	513,590	388,518
Managed Public Real Estate Capital | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			39,509	36,396	114,509	104,745
Managed Public Real Estate Capital | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			140,945	92,519	399,081	283,773
Managed Equity REITs
Related Party Transaction [Line Items]
Total revenues from related parties			178,311	126,030	505,635	380,719
Managed Equity REITs | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			38,372	35,262	111,117	101,276
Managed Equity REITs | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			139,939	90,768	394,518	279,443
DHC
Related Party Transaction [Line Items]
Total revenues from related parties			48,526	42,421	132,978	133,180
DHC | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			7,208	9,699	23,737	27,273
DHC | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			41,318	32,722	109,241	105,907
ILPT
Related Party Transaction [Line Items]
Total revenues from related parties			17,929	8,962	41,932	27,676
ILPT | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			9,803	4,243	21,545	13,290
ILPT | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			8,126	4,719	20,387	14,386
OPI
Related Party Transaction [Line Items]
Total revenues from related parties			90,723	59,847	252,971	175,199
OPI | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			10,640	9,320	31,722	27,215
OPI | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			80,083	50,527	221,249	147,984
SVC
Related Party Transaction [Line Items]
Total revenues from related parties			21,133	14,800	77,754	44,664
SVC | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			10,721	12,000	34,113	33,498
SVC | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			10,412	2,800	43,641	11,166
SEVN
Related Party Transaction [Line Items]
Total revenues from related parties			2,143	1,290	7,955	3,531
SEVN | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			1,137	757	3,392	2,057
SEVN | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			1,006	533	4,563	1,474
TRMT
Related Party Transaction [Line Items]
Total revenues from related parties			0	1,595	0	4,268
TRMT | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			0	377	0	1,412
TRMT | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			0	1,218	0	2,856
Managed Private Real Estate Capital
Related Party Transaction [Line Items]
Total revenues from related parties			21,745	9,024	53,856	25,954
Managed Private Real Estate Capital | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			5,230	2,138	12,450	5,842
Managed Private Real Estate Capital | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			16,515	6,886	41,406	20,112
ABP Trust
Related Party Transaction [Line Items]
Total revenues from related parties			6,521	6,530	21,453	19,193
ABP Trust | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			1,048	1,073	3,139	3,171
ABP Trust | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			5,473	5,457	18,314	16,022
Other private entities
Related Party Transaction [Line Items]
Total revenues from related parties			15,224	2,494	32,403	6,761
Other private entities | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			4,182	1,065	9,311	2,671
Other private entities | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			11,042	1,429	23,092	4,090
Managed Operators
Related Party Transaction [Line Items]
Total revenues from related parties			8,843	7,305	22,765	19,023
Managed Operators | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			8,171	6,976	21,201	17,988
Managed Operators | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			672	329	1,564	1,035
ALR
Related Party Transaction [Line Items]
Total revenues from related parties			1,338	1,898	3,855	5,862
ALR | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			1,239	1,794	3,610	5,573
ALR | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			99	104	245	289
Sonesta
Related Party Transaction [Line Items]
Total revenues from related parties			2,537	1,613	6,176	2,681
Sonesta | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			2,491	1,522	6,092	2,511
Sonesta | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			46	91	84	170
TA
Related Party Transaction [Line Items]
Total revenues from related parties			4,968	3,794	12,734	10,480
TA | Total management and advisory services revenues
Related Party Transaction [Line Items]
Total revenues from related parties			4,441	3,660	11,499	9,904
TA | Total reimbursable costs
Related Party Transaction [Line Items]
Total revenues from related parties			$ 527	$ 134	$ 1,235	$ 576

Related Person Transactions - A

Related Person Transactions - Amount Due from Related Parties (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Related Party Transaction [Line Items]
Accounts receivable	$ 23,815	$ 27,470
Reimbursable costs	85,291	75,522
Total	109,106	102,992
Managed Public Real Estate Capital
Related Party Transaction [Line Items]
Accounts receivable	19,977	25,122
Reimbursable costs	68,807	68,659
Total	88,784	93,781
Managed Equity REITs
Related Party Transaction [Line Items]
Accounts receivable	18,914	23,405
Reimbursable costs	68,005	67,479
Total	86,919	90,884
DHC
Related Party Transaction [Line Items]
Accounts receivable	4,210	6,005
Reimbursable costs	18,860	17,866
Total	23,070	23,871
ILPT
Related Party Transaction [Line Items]
Accounts receivable	3,560	2,934
Reimbursable costs	9,878	6,928
Total	13,438	9,862
OPI
Related Party Transaction [Line Items]
Accounts receivable	6,974	8,625
Reimbursable costs	35,190	33,693
Total	42,164	42,318
SVC
Related Party Transaction [Line Items]
Accounts receivable	4,170	5,841
Reimbursable costs	4,077	8,992
Total	8,247	14,833
SEVN
Related Party Transaction [Line Items]
Accounts receivable	1,063	1,717
Reimbursable costs	802	1,180
Total	1,865	2,897
Managed Private Real Estate Capital
Related Party Transaction [Line Items]
Accounts receivable	3,672	2,071
Reimbursable costs	7,847	3,448
Total	11,519	5,519
ABP Trust
Related Party Transaction [Line Items]
Accounts receivable	1,011	1,202
Reimbursable costs	2,849	2,678
Total	3,860	3,880
Other private entities
Related Party Transaction [Line Items]
Accounts receivable	2,661	869
Reimbursable costs	4,998	770
Total	7,659	1,639
Managed Operating Companies
Related Party Transaction [Line Items]
Accounts receivable	166	277
Reimbursable costs	8,637	3,415
Total	8,803	3,692
ALR
Related Party Transaction [Line Items]
Accounts receivable	120	136
Reimbursable costs	673	422
Total	793	558
Sonesta
Related Party Transaction [Line Items]
Accounts receivable		17
Accounts payable	(63)
Reimbursable costs	0	0
Total	(63)
Total		17
TA
Related Party Transaction [Line Items]
Accounts receivable	109	124
Reimbursable costs	7,964	2,993
Total	$ 8,073	$ 3,117

Related Person Transactions - L

Related Person Transactions - Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
ABP Trust and Managed REIT
Related Party Transaction [Line Items]
Lease expense, rental expense	$ 1,470	$ 1,420	$ 4,444	$ 4,246

Related Person Transactions - T

Related Person Transactions - Tax Related Payments (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
RMR LLC
Related Party Transaction [Line Items]
Tax distributions	$ 11,559	$ 12,327
ABP Trust | RMR LLC
Related Party Transaction [Line Items]
Tax distributions	$ 10,410	10,874
ABP Trust | Up C Transaction
Related Party Transaction [Line Items]
Tax receivable agreement, percent of payment	85%
Liability related to tax receivable agreement	$ 27,792
Current portion of liability related to tax receivable agreement	2,215
ABP Trust and Managed REIT | RMR LLC
Related Party Transaction [Line Items]
Tax distributions	$ 21,969	$ 23,201

Related Person Transactions - P

Related Person Transactions - Purchase of SEVN Shares (Details) - USD ($) $ in Thousands		9 Months Ended
	May 11, 2022	Jun. 30, 2022	Jun. 30, 2021
Related Party Transaction [Line Items]
Purchase price		$ 9,469	$ 0
SEVN | Tremont Reality Capital
Related Party Transaction [Line Items]
Number of shares purchased (in shares)	882,407
Purchase price	$ 9,469
Number of shares owned (in shares)		1,708,058
Ownership percentage		11.70%
SEVN | Adam D. Portnoy
Related Party Transaction [Line Items]
Ownership percentage		13.50%

Related Person Transactions - S

Related Person Transactions - Separation Arrangements (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Related Party Transaction [Line Items]
Separation costs		$ 400	$ 0	$ 617	$ 4,159
Pension plan liability			515		515
Former Executive Officer
Related Party Transaction [Line Items]
Cash separation costs		0	0	0	2,900
Equity based separation costs		0	0	0	295
Separation costs		0	0	0	3,195
Former Nonexecutive Officer
Related Party Transaction [Line Items]
Cash separation costs		252	0	469	805
Equity based separation costs		148	0	148	159
Separation costs		$ 400	$ 0	$ 617	$ 964
David M. Blackman
Related Party Transaction [Line Items]
Number of accelerated vesting shares (in shares)	9,400
David M. Blackman | Former Executive Officer | Cash payment
Related Party Transaction [Line Items]
Related party transaction	$ 2,850
David M. Blackman | Former Executive Officer | Tax
Related Party Transaction [Line Items]
Related party transaction	$ 50

Shareholders_ Equity - Addition

Shareholders’ Equity - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 10, 2022 $ / shares shares	Jun. 30, 2022 USD ($) vesting_installment shares	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) vesting_installment shares	Jun. 30, 2021 USD ($)
Class of Stock [Line Items]
General and administrative | $		$ 8,323	$ 6,320	$ 24,464	$ 19,684
Equity based compensation expense | $		$ 581	$ 552	$ 1,823	$ 1,656
Unvested shares outstanding (in shares)		157,910		157,910
Vesting 2022
Class of Stock [Line Items]
Shares vesting (in shares)				57,690
Vesting 2023
Class of Stock [Line Items]
Shares vesting (in shares)				47,920
Vesting 2024
Class of Stock [Line Items]
Shares vesting (in shares)				34,140
Vesting 2025
Class of Stock [Line Items]
Shares vesting (in shares)				18,160
Class A Common Stock | 2016 Omnibus Equity Plan
Class of Stock [Line Items]
Number of annual installments | vesting_installment		5		5
Shares granted (in shares)	3,000
Share price (in dollars per share) | $ / shares	$ 30.36
General and administrative | $				$ 547
Shares repurchased (in shares)				970
Shares repurchased during period | $				$ 31

Shareholders_ Equity - Distribu

Shareholders’ Equity - Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands								9 Months Ended
	Jul. 14, 2022	May 19, 2022	Feb. 17, 2022	Nov. 18, 2021	May 20, 2021	Feb. 18, 2021	Nov. 19, 2020	Jun. 30, 2022	Jun. 30, 2021
Class A and B-1 common shares
Class of Stock [Line Items]
Dividends paid (in usd per share)		$ 0.40	$ 0.38	$ 0.38	$ 0.38	$ 0.38	$ 0.38	$ 1.16	$ 1.14
Value of dividends		$ 6,601	$ 6,265	$ 6,264	$ 6,237	$ 6,230	$ 6,230	$ 19,130	$ 18,697
Subsequent Event | Class A and B-1 common shares
Class of Stock [Line Items]
Value of dividends	$ 6,600
Dividends declared (in usd per share)	$ 0.40
Subsequent Event | Membership Units | RMR LLC
Class of Stock [Line Items]
Shares owned (in shares)	16,500,716
RMR LLC | Membership Units
Class of Stock [Line Items]
Dividends paid (in usd per share)		$ 0.32	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.92	$ 0.90
Value of dividends		$ 10,080	$ 9,446	$ 9,446	$ 9,424	$ 9,419	$ 9,419	$ 28,972	$ 28,262
RMR LLC | Subsequent Event | Membership Units
Class of Stock [Line Items]
Value of dividends	$ 10,080
Dividends declared (in usd per share)	$ 0.32
RMR LLC | RMR, Inc | Membership Units
Class of Stock [Line Items]
Value of dividends		5,280	4,946	4,946	4,924	4,919	4,919	15,172	14,762
RMR LLC | RMR, Inc | Subsequent Event | Membership Units
Class of Stock [Line Items]
Value of dividends	$ 5,280
RMR LLC | ABP Trust | Membership Units
Class of Stock [Line Items]
Value of dividends		$ 4,800	$ 4,500	$ 4,500	$ 4,500	$ 4,500	$ 4,500	$ 13,800	$ 13,500
RMR LLC | ABP Trust | Subsequent Event | Membership Units
Class of Stock [Line Items]
Value of dividends	$ 4,800
ABP Trust | Subsequent Event | Membership Units | RMR LLC
Class of Stock [Line Items]
Shares owned (in shares)	15,000,000

Per Common Share Amounts - Addi

Per Common Share Amounts - Additional Information (Details) - Class A membership units	9 Months Ended
	Jun. 30, 2022 shares
Class of Stock [Line Items]
Antidilutive securities (in shares)	15,000,000
Conversion ratio	1

Per Common Share Amounts - Sche

Per Common Share Amounts - Schedule of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerators:
Net income attributable to The RMR Group Inc.	$ 7,570	$ 8,232	$ 22,004	$ 22,070
Less: income attributable to unvested participating securities	(72)	(72)	(213)	(194)
Net income attributable to The RMR Group Inc. used in calculating basic EPS	7,498	8,160	21,791	21,876
Add back: income attributable to unvested participating securities	72	72	213	194
Add back: net income attributable to noncontrolling interest	9,695	10,797	28,142	28,192
Add back: income tax expense	2,943	3,361	8,448	8,109
Income tax expense assuming redemption of noncontrolling interest’s Class A units for Class A common shares	(5,851)	(6,686)	(16,833)	(17,346)
Net income used in calculating diluted EPS	$ 14,357	$ 15,704	$ 41,761	$ 41,025
Denominators:
Common shares outstanding (in shares)	16,501	16,408	16,501	16,408
Unvested participating securities (in shares)	(158)	(139)	(169)	(149)
Weighted average common shares outstanding - basic (in shares)	16,343	16,269	16,332	16,259
Assumed redemption of noncontrolling interest’s Class A units for Class A common shares (in shares)	15,000	15,000	15,000	15,000
Add: Incremental unvested shares (in shares)	10	39	10	12
Weighted average common shares outstanding - diluted (in shares)	31,353	31,308	31,342	31,271
Net income attributable to The RMR Group Inc. per common share - basic (in dollars per share)	$ 0.46	$ 0.50	$ 1.33	$ 1.35
Net income attributable to The RMR Group Inc. per common share - diluted (in dollars per share)	$ 0.46	$ 0.50	$ 1.33	$ 1.31
Effective tax rate	29%	29.90%	28.70%	29.70%

Net Income Attributable to RM_3

Net Income Attributable to RMR Inc. (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Income Attributable to RMR Inc.
Income before income tax expense	$ 20,208	$ 22,390	$ 58,594	$ 58,371
RMR Inc. franchise tax expense and interest income	149	217	485	646
Net income before noncontrolling interest	20,357	22,607	59,079	59,017
Net income attributable to noncontrolling interest	(9,695)	(10,797)	(28,142)	(28,192)
Net income attributable to RMR Inc. before income tax expense	10,662	11,810	30,937	30,825
Income tax expense attributable to RMR Inc.	(2,943)	(3,361)	(8,448)	(8,109)
RMR Inc. franchise tax expense and interest income	(149)	(217)	(485)	(646)
Net income attributable to The RMR Group Inc.	$ 7,570	$ 8,232	$ 22,004	$ 22,070

Segment Reporting (Details)

Segment Reporting (Details) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Segment Reporting
Number of reportable business segments | segment							1
Total revenues	$ 211,088			$ 145,244			$ 590,310	$ 433,754
Compensation and benefits	32,170			30,530			95,671	90,610
Equity based compensation	512			1,954			4,719	7,267
Separation costs	400			0			617	4,159
Total compensation and benefits expense	33,082			32,484			101,007	102,036
General and administrative	8,323			6,320			24,464	19,684
Other reimbursable expenses	144,012			85,263			397,063	259,856
Transaction and acquisition related costs	0			61			0	474
Depreciation and amortization	253			245			731	734
Total expenses	185,670			124,373			523,265	382,784
Operating income (loss)	25,418			20,871			67,045	50,970
Interest and other income	279			179			402	614
Equity in earnings of investees	0			28			0	755
Unrealized (loss) gain on equity method investments accounted for under the fair value option	(5,489)			1,312			(8,853)	6,032
Income (loss) before income tax expense	20,208			22,390			58,594	58,371
Income tax expense	(2,943)			(3,361)			(8,448)	(8,109)
Net income (loss)	17,265	$ 14,589	$ 18,292	19,029	$ 11,480	$ 19,753	50,146	50,262
Total assets	531,036			724,589			531,036	724,589	$ 497,911
Operating Segments | RMR LLC
Segment Reporting
Total revenues	209,186			143,602			584,866	428,591
Compensation and benefits	30,743			29,541			91,906	86,517
Equity based compensation	61			1,922			3,996	7,160
Separation costs	400						617	4,159
Total compensation and benefits expense	31,204			31,463			96,519	97,836
General and administrative	7,300			5,335			21,370	16,690
Other reimbursable expenses	144,012			85,263			397,063	259,856
Transaction and acquisition related costs				45				409
Depreciation and amortization	244			234			704	702
Total expenses	182,760			122,340			515,656	375,493
Operating income (loss)	26,426			21,262			69,210	53,098
Interest and other income	253			171			361	585
Equity in earnings of investees				0				0
Unrealized (loss) gain on equity method investments accounted for under the fair value option	(5,280)			1,312			(9,528)	6,032
Income (loss) before income tax expense	21,399			22,745			60,043	59,715
Income tax expense	0			0			0	0
Net income (loss)	21,399			22,745			60,043	59,715
Total assets	485,799			674,378			485,799	674,378
All Other Operations
Segment Reporting
Total revenues	1,902			1,642			5,444	5,163
Compensation and benefits	1,427			989			3,765	4,093
Equity based compensation	451			32			723	107
Separation costs	0						0	0
Total compensation and benefits expense	1,878			1,021			4,488	4,200
General and administrative	1,023			985			3,094	2,994
Other reimbursable expenses	0			0			0	0
Transaction and acquisition related costs				16				65
Depreciation and amortization	9			11			27	32
Total expenses	2,910			2,033			7,609	7,291
Operating income (loss)	(1,008)			(391)			(2,165)	(2,128)
Interest and other income	26			8			41	29
Equity in earnings of investees				28				755
Unrealized (loss) gain on equity method investments accounted for under the fair value option	(209)			0			675	0
Income (loss) before income tax expense	(1,191)			(355)			(1,449)	(1,344)
Income tax expense	(2,943)			(3,361)			(8,448)	(8,109)
Net income (loss)	(4,134)			(3,716)			(9,897)	(9,453)
Total assets	45,237			50,211			45,237	50,211
Intersegment Eliminations
Segment Reporting
Total revenues	1,483			801			3,565	3,003
Management services
Segment Reporting
Total revenues	51,819			44,376			144,867	125,365
Management services | Operating Segments | RMR LLC
Segment Reporting
Total revenues	51,773			44,376			144,768	125,106
Management services | All Other Operations
Segment Reporting
Total revenues	46			0			99	259
Advisory services
Segment Reporting
Total revenues	1,137			1,134			3,392	2,849
Advisory services | Operating Segments | RMR LLC
Segment Reporting
Total revenues	0			0			0	0
Advisory services | All Other Operations
Segment Reporting
Total revenues	1,137			1,134			3,392	2,849
Total management and advisory services revenues
Segment Reporting
Total revenues	52,956			45,510			148,259	128,834
Total management and advisory services revenues | Operating Segments | RMR LLC
Segment Reporting
Total revenues	51,773			44,376			144,768	125,106
Total management and advisory services revenues | All Other Operations
Segment Reporting
Total revenues	1,183			1,134			3,491	3,728
Reimbursable compensation and benefits
Segment Reporting
Total revenues	14,189			13,069			42,092	39,453
Reimbursable compensation and benefits | Operating Segments | RMR LLC
Segment Reporting
Total revenues	13,470			12,561			40,139	38,018
Reimbursable compensation and benefits | All Other Operations
Segment Reporting
Total revenues	719			508			1,953	1,435
Reimbursable equity based compensation
Segment Reporting
Total revenues	(69)			1,402			2,896	5,611
Reimbursable equity based compensation | Operating Segments | RMR LLC
Segment Reporting
Total revenues	(69)			1,402			2,896	5,611
Reimbursable equity based compensation | All Other Operations
Segment Reporting
Total revenues	0			0			0	0
Other reimbursable expenses
Segment Reporting
Total revenues	144,012			85,263			397,063	259,856
Other reimbursable expenses | Operating Segments | RMR LLC
Segment Reporting
Total revenues	144,012			85,263			397,063	259,856
Other reimbursable expenses | All Other Operations
Segment Reporting
Total revenues	0			0			0	0
Total reimbursable costs
Segment Reporting
Total revenues	158,132			99,734			442,051	304,920
Total reimbursable costs | Operating Segments | RMR LLC
Segment Reporting
Total revenues	157,413			99,226			440,098	303,485
Total reimbursable costs | All Other Operations
Segment Reporting
Total revenues	719			508			1,953	1,435
Incentive business management fees
Segment Reporting
Total revenues	$ 0			$ 0			$ 0	620
Incentive business management fees | Operating Segments | RMR LLC
Segment Reporting
Total revenues								0
Incentive business management fees | All Other Operations
Segment Reporting
Total revenues								$ 620