AlerisLife (ALR) 10-Q 6 Aug 20 2020 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Aug. 03, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	1-16817
Entity Registrant Name	FIVE STAR SENIOR LIVING INC.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	04-3516029
Entity Address, Address Line One	400 Centre Street
Entity Address, City or Town	Newton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02458
City Area Code	617
Local Phone Number	796-8387
Title of 12(b) Security	Common Stock
Trading Symbol	FVE
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		31,574,499
Entity Central Index Key	0001159281
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 76,114	$ 31,740
Restricted cash and cash equivalents	23,858	23,995
Accounts receivable, net of allowance of $3,976 and $4,664, respectively	9,387	34,190
Due from related person	73,466	5,533
Debt and equity investments, of which $12,604 and $12,622 are restricted, respectively	21,739	21,070
Prepaid expenses and other current assets	19,118	17,286
Assets held for sale	0	9,554
Total current assets	223,682	143,368
Property and equipment, net	162,037	167,247
Equity investment of an investee	11	298
Restricted cash and cash equivalents	781	1,244
Restricted debt and equity investments	6,887	7,105
Right of use assets	19,459	20,855
Other long-term assets	4,254	5,676
Total assets	417,111	345,793
Current liabilities:
Accounts payable	15,567	30,440
Accrued expenses and other current liabilities	49,525	55,981
Accrued compensation and benefits	48,287	35,629
Accrued self-insurance obligations	27,755	23,791
Lease liabilities	2,977	2,872
Due to related persons	592	2,247
Mortgage note payable	375	362
Security deposits and current portion of continuing care contracts	409	434
Liabilities held for sale	0	12,544
Total current liabilities	145,487	164,300
Long-term liabilities:
Accrued self-insurance obligations	33,381	33,872
Lease liabilities	18,161	19,671
Mortgage note payable	6,980	7,171
Other long-term liabilities	8,996	798
Total long-term liabilities	67,518	61,512
Commitments and contingencies
Shareholders’ equity:
Common stock, par value $0.01: 75,000,000 shares authorized, 31,574,499 and 5,154,892 shares issued and outstanding, respectively	316	52
Additional paid-in-capital	459,801	362,450
Accumulated deficit	(257,697)	(245,184)
Accumulated other comprehensive income	1,686	2,663
Total shareholders’ equity	204,106	119,981
Total liabilities and shareholders' equity	$ 417,111	$ 345,793

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accounts receivable, net of allowance	$ 3,976	$ 4,664
Investments, restricted	$ 12,604	$ 12,622
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	31,574,499	5,154,892
Common stock, shares outstanding (in shares)	31,574,499	5,154,892

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
REVENUES
Total revenues and other operating income	$ 286,583,000	$ 355,739,000	$ 584,028,000	$ 711,262,000
OPERATING EXPENSES
General and administrative	23,567,000	20,548,000	46,432,000	47,050,000
Rent	1,378,000	33,262,000	2,555,000	87,804,000
Depreciation and amortization	2,703,000	2,941,000	5,404,000	11,106,000
Loss on sale of senior living communities	0	101,000	0	101,000
Long-lived asset impairment	0	112,000	0	3,260,000
Total operating expenses	285,239,000	352,008,000	574,060,000	739,368,000
Operating income (loss)	1,344,000	3,731,000	9,968,000	(28,106,000)
Interest, dividend and other income	182,000	415,000	521,000	571,000
Interest and other expense	(409,000)	(906,000)	(791,000)	(1,812,000)
Unrealized gain (loss) on equity investments	867,000	(38,000)	(595,000)	328,000
Realized gain on sale of debt and equity investments	116,000	144,000	95,000	236,000
Loss on termination of leases	0	0	(22,899,000)	0
Income (loss) before income taxes and equity in earnings of an investee	2,100,000	3,346,000	(13,701,000)	(28,783,000)
Benefit (provision) for income taxes	902,000	705,000	(506,000)	(785,000)
Equity in earnings of an investee	0	130,000	0	534,000
Net income (loss)	$ 3,002,000	$ 4,181,000	$ (14,207,000)	$ (29,034,000)
Weighted average shares outstanding—basic (in shares)	31,460	5,007	31,454	5,005
Weighted average shares outstanding—diluted (in shares)	31,582	5,142	31,454	5,005
Net income (loss) per share—basic (in dollars per share)	$ 0.10	$ 0.84	$ (0.45)	$ (5.80)
Net income (loss) per share—diluted (in dollars per share)	$ 0.10	$ 0.81	$ (0.45)	$ (5.80)
Senior living
REVENUES
Total revenues	$ 19,590,000	$ 263,008,000	$ 40,587,000	$ 529,171,000
Management fees
REVENUES
Total revenues	15,705,000	4,024,000	32,756,000	8,007,000
Rehabilitation and wellness services
REVENUES
Total revenues	19,268,000	11,488,000	40,652,000	22,260,000
OPERATING EXPENSES
Cost of revenues	15,451,000	9,265,000	32,471,000	17,619,000
Total management and operating revenues
REVENUES
Total revenues	54,563,000	278,520,000	113,995,000	559,438,000
Reimbursed community-level costs incurred on behalf of managed communities
REVENUES
Total revenues	224,104,000	77,219,000	456,120,000	151,824,000
OPERATING EXPENSES
Cost of revenues	224,104,000	77,219,000	456,120,000	151,824,000
Other reimbursed expenses
REVENUES
Total revenues	6,417,000	0	12,414,000	0
Total revenues and other operating income		0
Total revenues
REVENUES
Total revenues	285,084,000	355,739,000	582,529,000	711,262,000
Other operating income
REVENUES
Total revenues and other operating income	1,499,000	0	1,499,000	0
Senior living wages and benefits
OPERATING EXPENSES
Cost of revenues	9,705,000	137,259,000	19,505,000	273,637,000
Other senior living operating expenses
OPERATING EXPENSES
Cost of revenues	$ 8,331,000	$ 71,301,000	$ 11,573,000	$ 146,967,000

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 3,002	$ 4,181	$ (14,207)	$ (29,034)
Other comprehensive income (loss):
Unrealized gain (loss) on debt investments, net of tax of $0 and $418, and $0 and $1,162, respectively	303	(16)	730	(221)
Equity in unrealized gain of an investee, net of tax of $0 and $0, and $0 and $0, respectively	0	71	0	136
Realized (gain) loss on debt investments reclassified and included in net income (loss), net of tax of $0 and $0, and $0 and $0, respectively	(3)	(3)	(13)	1
Other comprehensive income (loss)	300	52	717	(84)
Comprehensive income (loss)	$ 3,302	$ 4,233	$ (13,490)	$ (29,118)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Tax on unrealized loss on debt investments	$ 0	$ 418	$ 0	$ 1,162
Tax on equity in unrealized gain an investee	0	0	0	0
Tax on realized (gain) loss on debt investments	$ 0	$ 0	$ 0	$ 0

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Beginning balance (in shares) at Dec. 31, 2018		5,085,345
Beginning balance at Dec. 31, 2018	$ 71,169	$ 51	$ 362,012	$ (292,636)	$ 1,742
Comprehensive (loss) income:
Net income (loss)	(33,215)			(33,215)
Unrealized gain on debt investments, net of tax	(205)				(205)
Realized gain on debt investments reclassified and included in net income, net of tax	4				4
Equity in unrealized gain of an investee, net of tax	65				65
Total comprehensive (loss) income	(33,351)			(33,215)	(136)
Grants under share award plan and share-based compensation	97		97
Repurchases under share award plan (in shares)		(1,042)
Ending balance (in shares) at Mar. 31, 2019		5,084,303
Ending balance at Mar. 31, 2019	105,388	$ 51	362,109	(258,378)	1,606
Beginning balance (in shares) at Dec. 31, 2018		5,085,345
Beginning balance at Dec. 31, 2018	71,169	$ 51	362,012	(292,636)	1,742
Comprehensive (loss) income:
Net income (loss)	(29,034)
Total comprehensive (loss) income	(29,118)
Ending balance (in shares) at Jun. 30, 2019		5,086,589
Ending balance at Jun. 30, 2019	109,746	$ 51	362,234	(254,197)	1,658
Beginning balance (in shares) at Mar. 31, 2019		5,084,303
Beginning balance at Mar. 31, 2019	105,388	$ 51	362,109	(258,378)	1,606
Comprehensive (loss) income:
Net income (loss)	4,181			4,181
Unrealized gain on debt investments, net of tax	(16)				(16)
Realized gain on debt investments reclassified and included in net income, net of tax	(3)				(3)
Equity in unrealized gain of an investee, net of tax	71				71
Total comprehensive (loss) income	4,233			4,181	52
Grants under share award plan and share based compensation (in shares)		6,250
Grants under share award plan and share-based compensation	123		123
Repurchases under share award plan (in shares)		(3,964)
Repurchases under share award plan	2		2
Ending balance (in shares) at Jun. 30, 2019		5,086,589
Ending balance at Jun. 30, 2019	$ 109,746	$ 51	362,234	(254,197)	1,658
Beginning balance (in shares) at Dec. 31, 2019	5,154,892	5,154,892
Beginning balance at Dec. 31, 2019	$ 119,981	$ 52	362,450	(245,184)	2,663
Comprehensive (loss) income:
Net income (loss)	(17,209)			(17,209)
Unrealized gain on debt investments, net of tax	427				427
Realized gain on debt investments reclassified and included in net income, net of tax	(10)				(10)
Total comprehensive (loss) income	(16,792)			(17,209)	417
Issuance of common shares (in shares)		26,387,007
Issuance of common shares	97,340	$ 264	97,076
Grants under share award plan and share based compensation (in shares)		4,000
Grants under share award plan and share-based compensation	81		81
Repurchases under share award plan (in shares)		(3,564)
Repurchases under share award plan	(1)		(1)
Ending balance (in shares) at Mar. 31, 2020		31,542,335
Ending balance at Mar. 31, 2020	$ 200,609	$ 316	459,606	(260,699)	1,386
Beginning balance (in shares) at Dec. 31, 2019	5,154,892	5,154,892
Beginning balance at Dec. 31, 2019	$ 119,981	$ 52	362,450	(245,184)	2,663
Comprehensive (loss) income:
Net income (loss)	(14,207)
Total comprehensive (loss) income	$ (13,490)
Ending balance (in shares) at Jun. 30, 2020	31,574,499	31,574,499
Ending balance at Jun. 30, 2020	$ 204,106	$ 316	459,801	(257,697)	1,686
Beginning balance (in shares) at Mar. 31, 2020		31,542,335
Beginning balance at Mar. 31, 2020	200,609	$ 316	459,606	(260,699)	1,386
Comprehensive (loss) income:
Net income (loss)	3,002			3,002
Unrealized gain on debt investments, net of tax	303				303
Realized gain on debt investments reclassified and included in net income, net of tax	(3)				(3)
Total comprehensive (loss) income	3,302			3,002	300
Grants under share award plan and share based compensation (in shares)		35,000
Grants under share award plan and share-based compensation	199		199
Repurchases under share award plan (in shares)		(2,836)
Repurchases under share award plan	$ (4)		(4)
Ending balance (in shares) at Jun. 30, 2020	31,574,499	31,574,499
Ending balance at Jun. 30, 2020	$ 204,106	$ 316	$ 459,801	$ (257,697)	$ 1,686

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
CASH FLOW FROM OPERATING ACTIVITIES:
Net loss	$ 3,002,000	$ (17,209,000)	$ 4,181,000	$ (33,215,000)	$ (14,207,000)	$ (29,034,000)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation and amortization					5,404,000	11,106,000
Loss on sale of senior living communities	0		101,000		0	101,000
Unrealized loss (gain) on equity securities					595,000	(328,000)
Realized gain on sale of debt and equity investments	(116,000)		(144,000)		(95,000)	(236,000)
Loss on termination of leases	0		0		22,899,000	0
Long-lived asset impairment					0	3,260,000
Equity in earnings of an investee	0		(130,000)		0	(534,000)
Share-based compensation					275,000	222,000
Provision for losses on accounts receivables					1,208,000	2,092,000
Amortization of non-cash rent adjustments					0	(472,000)
Other non-cash expense adjustments, net					126,000	148,000
Changes in assets and liabilities:
Accounts receivable					23,595,000	(953,000)
Due from related person					(39,920,000)	17,010,000
Prepaid expenses and other current assets					(8,739,000)	2,007,000
Accounts payable					(14,873,000)	(6,506,000)
Accrued expenses and other current liabilities					41,239,000	682,000
Accrued compensation and benefits					12,658,000	6,389,000
Due to related persons					(1,655,000)	(524,000)
Other current and long-term liabilities					11,648,000	994,000
Net cash provided by operating activities					40,158,000	5,424,000
CASH FLOW FROM INVESTING ACTIVITIES:
Acquisition of property and equipment					(3,121,000)	(24,427,000)
Purchases of debt and equity investments					(5,092,000)	(2,234,000)
Proceeds from sale of property and equipment					2,725,000	78,920,000
Distributions in excess of earnings from Affiliates Insurance Company					287,000	0
Proceeds from sale of debt and equity investments					4,851,000	4,446,000
Net cash (used in) provided by investing activities					(350,000)	56,705,000
CASH FLOW FROM FINANCING ACTIVITIES:
Repayments of borrowings on revolving credit facility					0	(51,484,000)
Costs related to issuance of common stock					(559,000)	0
Repayments of mortgage notes payable					(190,000)	(181,000)
Targeted SNF distribution funds received on behalf of others					4,715,000	0
Payment of deferred financing fees					0	(1,271,000)
Net cash provided by (used in) financing activities					3,966,000	(52,936,000)
Change in cash and cash equivalents and restricted cash and cash equivalents					43,774,000	9,193,000
Restricted cash included in held for sale assets					0	(42,000)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period		56,979,000		51,258,000	56,979,000	51,258,000	$ 51,258,000
Cash and cash equivalents and restricted cash and cash equivalents at end of period	100,753,000		60,409,000		100,753,000	60,409,000	56,979,000
Reconciliation of cash and cash equivalents and restricted cash and cash equivalents:
Cash and cash equivalents								$ 76,114,000	$ 31,740,000	$ 35,500,000
Current restricted cash and cash equivalents								23,858,000		23,880,000
Other restricted cash and cash equivalents								781,000		1,029,000
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 100,753,000	$ 56,979,000	$ 60,409,000	$ 51,258,000	100,753,000	60,409,000	$ 51,258,000	$ 100,753,000	$ 56,979,000	$ 60,409,000
Supplemental cash flow information:
Interest paid					243,000	1,565,000
Income taxes received, net					(93,000)	(1,491,000)
Non-cash financing activities:
Liabilities assumed related to issuance of our common stock					$ 51,547,000	$ 0

Basis of Presentation and Organ

Basis of Presentation and Organization	6 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Organization	Basis of Presentation and Organization General. The accompanying condensed consolidated financial statements of Five Star Senior Living Inc. and its subsidiaries are unaudited. Certain information and disclosures required by the rules and regulations of the Securities and Exchange Commission, or SEC, and U.S. generally accepted accounting principles, or GAAP, for complete financial statements have been condensed or omitted pursuant to SEC rules and regulations related to interim financial statements. We believe the disclosures made are adequate to make the information presented not misleading. As of June 30, 2020 , we managed or operated 265 senior living communities located in 32 states with 30,660 living units, including 254 primarily independent and assisted living communities with 29,396 living units and 11 primarily skilled nursing facilities, or SNFs, with 1,264 living units. As of June 30, 2020 , we managed 241 of these senior living communities ( 28,348 living units), we owned and operated 20 of these senior living communities ( 2,108 living units) and we leased and operated four of these senior living communities ( 204 living units). Our 265 senior living communities, as of June 30, 2020 , included 11,061 independent living apartments, 16,202 assisted living suites and 3,397 SNF units. The foregoing numbers exclude living units categorized as out of service. Our rehabilitation and wellness services division, Ageility Physical Therapy Solutions, or Ageility, provides a comprehensive suite of rehabilitation and wellness services at our senior living communities as well as at outpatient clinics located separately from our senior living communities. As of June 30, 2020 , we operated 40 inpatient rehabilitation clinics in senior living communities owned by Diversified Healthcare Trust, or DHC, which are managed by us. As of June 30, 2020 , we operated 206 outpatient rehabilitation clinics, of which 152 were located at our managed, leased and owned senior living communities and 54 were located within senior living communities not owned or leased by us or DHC. Ageility leases from DHC space at certain of the senior living communities that we manage for DHC. Restructuring of Business Arrangements with DHC. On April 1, 2019, we entered into a transaction agreement, or the Transaction Agreement, with DHC to restructure our business arrangements with DHC, pursuant to which, effective as of January 1, 2020, or the Conversion Time: • our five then existing master leases with DHC as well as our then existing management and pooling agreements with DHC were terminated and replaced with new management agreements for all of these senior living communities, together with a related omnibus agreement, or collectively, the New Management Agreements; • we issued 10,268,158 of our common shares to DHC and an aggregate of 16,118,849 of our common shares to DHC’s shareholders of record as of December 13, 2019, or, together, the Share Issuances; and • as consideration for the Share Issuances, DHC provided to us $75,000 by assuming certain of our working capital liabilities and through cash payments. Such consideration, the Conversion and the Share Issuances are collectively referred to as the Restructuring Transactions. As of January 1, 2020, we reorganized our business to better align with the different services we offer older adults. In connection with our reorganization, we changed our reporting structure and the composition of our reporting units. We have reclassified certain prior year amounts to conform to the current year’s presentation. See Note 4 for more information regarding our segment reporting. As of January 1, 2020, we reclassified certain of our investments from debt investments to equity investments to reflect the nature of the investment rather than the nature of the securities held by the investment. As a result, we reclassified the related unrealized gain of $1,694 from accumulated other comprehensive income to accumulated deficit on January 1, 2020. See Note 9 for more information regarding these investments. The accompanying financial statements should be read in conjunction with the financial statements and notes contained in our Annual Report on Form 10-K for the year ended December 31, 2019

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Estimates and Assumptions. The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that may affect the amounts reported in these financial statements and related notes. Actual results could differ from those estimates. Significant estimates in our condensed consolidated financial statements relate to revenue recognition, including contractual allowances, the allowance of doubtful accounts, self-insurance reserves, long-lived assets and estimates concerning our provisions for income taxes. Recently Adopted Accounting Pronouncements. On January 1, 2020, we adopted ASU No. 2018-13, Fair Value Measurement (Topic 820) issued by the Financial Accounting Standards Board, or FASB, which modifies certain disclosure requirements in Topic 820, such as the removal of the need to disclose the amount of and reason for transfers between Level 1 and Level 2 of the fair value hierarchy, and several changes related to Level 3 fair value measurements. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. On January 1, 2020, we adopted ASU No. 2018-15, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40) issued by the FASB, using the prospective transition method, which aligns the requirements for capitalizing implementation costs incurred in a cloud computing hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal use software. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740) : Simplifying the Accounting for Income Taxes , which simplifies certain requirements under Topic 740, including eliminating the exception to intraperiod tax allocation when there is a loss from continuing operations and income from other sources, such as other comprehensive income or discontinued operations. We adopted this ASU on January 1, 2020. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326) , which requires a financial asset or a group of financial assets measured at amortized cost basis to be presented at the net amount expected to be collected. This ASU eliminates the probable initial recognition threshold and instead requires reflection of an entity’s current estimate of all expected credit losses. In addition, this ASU amends the current available for sale security other-than-temporary impairment model for debt securities. The length of time that the fair value of an available for sale debt security has been below the amortized cost will no longer impact the determination of whether a credit loss exists and credit losses will now be limited to the difference between a security’s amortized cost basis and its fair value. In November 2018, the FASB issued ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments-Credit Losses , which amends the transition and effective date for nonpublic entities and smaller reporting companies and clarifies that receivables arising from operating leases are not in the scope of this ASU. Entities will apply the provisions of the ASU as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. This ASU is effective for smaller reporting companies for reporting periods beginning after December 15, 2022. We are assessing the potential impact that the adoption of this ASU (and the related clarifying guidance issued by the FASB) will have on our consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides temporary optional expedients and exceptions on contract modifications meeting certain criteria to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to the alternative reference rates. For a contract that meets the criteria, this ASU generally allows an entity to account for and present modifications as an event that does not require remeasurement at the modification date or reassessment of a previous accounting determination. This ASU was effective upon issuance and can be applied through December 31, 2022. We are assessing the potential impact that this ASU will have on our consolidated financial statements.

Revenue and Other Operating Inc

Revenue and Other Operating Income	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue and Other Operating Income	Revenue and Other Operating Income We recognize revenue from contracts with customers in accordance with ASC Topic 606, Revenue from Contracts with Customers, or ASC Topic 606, using the practical expedient in paragraph 606-10-10-4 that allows for the use of a portfolio approach, because we have determined that the effect of applying the guidance to our portfolios of contracts within the scope of ASC Topic 606 on our condensed consolidated financial statements would not differ materially from applying the guidance to each individual contract within the respective portfolio or our performance obligations within such portfolio. The five-step model defined by ASC Topic 606 requires us to: (i) identify our contracts with customers; (ii) identify our performance obligations under those contracts; (iii) determine the transaction prices of those contracts; (iv) allocate the transaction prices to our performance obligations in those contracts; and (v) recognize revenue when each performance obligation under those contracts is satisfied. Revenue recognition occurs when promised goods or services are transferred to the customer in an amount that reflects the consideration expected in exchange for those goods or services. Senior Living and Rehabilitation and Wellness Services Revenues. A substantial portion of our revenue from our independent living and assisted living communities relates to contracts with residents for housing services that are generally short term in nature and initially are subject to ASC Topic 842, Leases, or ASC Topic 842. As noted above, we have concluded that the non-lease components of these agreements are the predominant components of the contracts; therefore, we recognize revenue for these agreements under ASC Topic 606. We also provide our residents and others with rehabilitation and wellness services at our senior living communities as well as at outpatient clinics located separately from our senior living communities. Our contracts with residents and other customers that are within the scope of ASC Topic 606 are generally short term in nature. We have determined that services performed under those contracts are considered one performance obligation in accordance with ASC Topic 606 as such services are regarded as a series of distinct events with the same timing and pattern of transfer to the resident or customer. Revenue is recognized for those contracts when our performance obligation is satisfied by transferring control of the service provided to the resident or customer, which are generally when the services are provided over time. Resident fees at our independent living and assisted living communities consist of regular monthly charges for basic housing and support services and fees for additional requested services, such as assisted living services, personalized health services and ancillary services. Fees are specified in our agreements with residents, which are generally short term ( 30 days to one year ), with regular monthly charges billed in advance. Funds received from residents in advance of services provided are not material to our condensed consolidated financial statements. Some of our senior living communities require payment of an upfront entrance fee in advance of a resident moving into the community; substantially all of these community fees are non-refundable and are initially recorded as deferred revenue and included in other current liabilities in our condensed consolidated balance sheets. These deferred amounts are then amortized on a straight-line basis into revenue over the term of the resident's agreement. When the resident no longer resides within our community, the remaining deferred non-refundable fees are recognized in revenue. Revenue recorded and deferred in connection with community fees is not material to our condensed consolidated financial statements. Revenue for basic housing and support services and additional requested services is recognized in accordance with ASC Topic 606 and measured based on the consideration specified in the resident agreement and is recorded when the services are provided. Rehabilitation and wellness services revenues at our Ageility clinics consist of charges for clinically-based rehabilitation services, including physical therapy, speech therapy and occupational therapy, as well as other service-based programs and therapies. Revenue for these services is recognized in accordance with ASC Topic 606 and is recorded when the services are provided. Management Fee Revenues and Reimbursed Community-Level Costs Incurred on Behalf of Managed Communities. We manage senior living communities for the account of DHC pursuant to long-term management agreements which provide for periodic management fee payments to us and reimbursement for our direct costs and expenses related to support such communities. Although there are various management and operational activities performed by us under the agreements, we have determined that all community operations management activities constitute a single performance obligation, which is satisfied over time as the services are rendered. We earn management fees equal to 5% of gross revenues realized and 3% of construction costs for construction projects we manage at the senior living communities we manage. We recognize management fee revenues in accordance with ASC Topic 606 in the same period that we provide the management services to DHC, generally monthly. Our estimate of the transaction price for management services also includes the amount of reimbursement due from the owners of the communities for services provided and related costs incurred. Commencing with the 2021 calendar year, we may also earn incentive fees from DHC under the management agreements, which are payable in cash and are contingent performance-based fees recognized only when earned at the end of each respective measurement period. Incentive 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 fee is equal to 15% of the amount by which the annual earnings before interest, taxes, depreciation and amortization, or EBITDA, of all the managed communities on a combined basis exceeds target EBITDA for those communities on a combined basis for such calendar year, provided that in no event shall the incentive fee be greater than 1.5% of the gross revenues realized at all the managed communities on a combined basis for such calendar year. The target EBITDA for those communities on a combined basis is increased annually based on the greater of the annual increase of the Consumer Price Index or 2% , plus 6% of any capital investments funded at the managed communities on a combined basis in excess of target amounts. Unless otherwise agreed, the target capital investment increases annually based on the greater of the annual increase of CPI or 2% . ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , clarifies how an entity should identify the unit of accounting for the principal versus agent evaluation and how it should apply the control principle to certain types of arrangements, such as service transactions. Where we are the primary obligor and, therefore, control the transfer of the goods and services with respect to any such operating expenses incurred in connection with the management of these communities, we recognize revenue when the goods have been delivered or the service has been rendered and we are due to be reimbursed from DHC pursuant to the New Management Agreements. Such revenue is included in community-level costs incurred on behalf of managed communities in our condensed consolidated statements of operations. The related costs are included in reimbursed community-level costs incurred on behalf of managed communities in our condensed consolidated statements of operations. Amounts due from DHC related to management fees and reimbursed community-level costs incurred on behalf of managed communities are included in due from related persons in our condensed consolidated balance sheets. Other reimbursed expenses. Other reimbursed expenses include reimbursements that arise from certain centralized services we provide pursuant to our management agreements, a significant portion of which are charged or passed through to and are paid by our customers. We have determined that we control the services provided by third parties for our customers and, therefore, we account for the cost of these services and the related reimbursement revenue on a gross basis. We recognized revenue from other reimbursed expenses of $6,417 for the three months ended June 30, 2020 and $12,414 for the six months ended June 30, 2020 . We did no t recognize revenue from other reimbursed expenses for the three and six months ended June 30, 2019 . The following tables present revenue from contracts with customers disaggregated by type of payer, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors: Three Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Total Private payer $ 19,293 $ 1,214 $ 20,507 Medicare and Medicaid programs 297 9,564 9,861 Other third-party payer programs — 8,490 8,490 Management fees 15,705 — 15,705 Reimbursed community-level costs incurred on behalf of managed communities 224,104 — 224,104 Other reimbursed expenses 6,417 — 6,417 Total revenues $ 265,816 $ 19,268 $ 285,084 Three Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Total Private payer $ 200,829 $ 640 $ 201,469 Medicare and Medicaid programs 54,714 6,128 60,842 Other third-party payer programs 7,465 4,720 12,185 Management fees 4,024 — 4,024 Reimbursed community-level costs incurred on behalf of managed communities 77,219 — 77,219 Total revenues $ 344,251 $ 11,488 $ 355,739 Six Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Total Private payer $ 39,574 $ 2,111 $ 41,685 Medicare and Medicaid programs 1,013 19,134 20,147 Other third-party payer programs — 19,407 19,407 Management fees 32,756 — 32,756 Reimbursed community-level costs incurred on behalf of managed communities 456,120 — 456,120 Other reimbursed expenses 12,414 — 12,414 Total revenues $ 541,877 $ 40,652 $ 582,529 Six Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Total Private payer $ 399,615 $ 1,256 $ 400,871 Medicare and Medicaid programs 114,300 11,571 125,871 Other third-party payer programs 15,256 9,433 24,689 Management fees 8,007 — 8,007 Reimbursed community-level costs incurred on behalf of managed communities 151,824 — 151,824 Total revenues $ 689,002 $ 22,260 $ 711,262 Other operating income. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act, or CARES Act, was signed into law. Under the CARES Act, the U.S. Department of Health and Human Services, or HHS, established the Provider Relief Fund. Retention and use of the funds received under the CARES Act are subject to certain terms and conditions. Other operating income includes revenues recognized for funds we have received pursuant to the Provider Relief Fund of the CARES Act that we have determined are in compliance with the terms and conditions of the Provider Relief Fund of the CARES Act. We recognize other operating income to the extent we have incurred losses that the CARES Act is intended to compensate. The amount of income we recognize for these losses is limited to the amount of funds we received for those losses during the period in which the losses have been recognized or, if funds were received subsequently, the period in which the funds were received. We recognized other operating income of $1,499 for the three and six months ended June 30, 2020 . At June 30, 2020 , accrued expenses and other current liabilities included $221 of funds received under the CARES Act for which we have not met, and may not meet, the required terms and conditions for the use of such funds, and which we may need to return. See Note 15 for more information.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Segment Information	Segment Information Segment Information. Operating segments are components of an enterprise that engages in business activities and for which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision-making group, in determining the allocation of resources and in assessing performance. Our chief operating decision maker is our President and Chief Executive Officer. Effective as of January 1, 2020, we reorganized our business to better align with the different services we offer to older adults. As a result of the reorganization, our chief operating decision maker changed the manner in which our performance is assessed and, therefore, we changed our reporting structure and the composition of our operating segments. As a result, we have reclassified certain prior year amounts to conform to the current year's presentation. Subsequent to the reorganization, we operate in two reportable segments: (1) senior living and (2) rehabilitation and wellness services. In the senior living reportable segment, we manage for the account of others and operate for our own account, independent living communities, assisted living communities and SNFs that are subject to centralized oversight. In the rehabilitation and wellness services segment, we provide a comprehensive suite of rehabilitation and wellness services, including physical, occupational, speech and other specialized therapy services, in the inpatient setting and in outpatient clinics through our Ageility division. Corporate and other amounts excluded from our reportable segments' performance are separately stated below and include amounts related to functional areas such as finance, information technology, legal, human resources and our captive insurance company subsidiary, which participates in our workers' compensation, professional and general liability and certain automobile insurance programs. All of our operations and assets are located in the United States, except for the operations of our captive insurance company subsidiary, which is organized in the Cayman Islands. We do not allocate assets to operating segments and, therefore, no asset information is provided for reportable segments. Results of operations and selected financial information by reportable segment and the reconciliation to the condensed consolidated financial statements are as follows: Three Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 265,816 $ 20,767 $ — $ 286,583 Operating expenses 250,719 16,259 18,261 285,239 Operating income (loss) 15,097 4,508 (18,261 ) 1,344 Income (loss) before income taxes and equity in earnings of an investee 842 3,536 (2,278 ) 2,100 Net income (loss) 842 3,536 (1,376 ) 3,002 Three Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 344,251 $ 11,488 $ — $ 355,739 Operating expenses 321,625 9,650 20,733 352,008 Operating income (loss) 22,626 1,838 (20,733 ) 3,731 Income (loss) before income taxes and equity in earnings of an investee 3,864 743 (1,261 ) 3,346 Net income (loss) 4,569 743 (1,131 ) 4,181 Six Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 541,877 $ 42,151 $ — $ 584,028 Operating expenses 506,338 33,877 33,845 574,060 Operating income (loss) 35,539 8,274 (33,845 ) 9,968 Income (loss) before income taxes and equity in earnings of an investee 5,707 6,234 (25,642 ) (13,701 ) Net income (loss) 5,707 6,234 (26,148 ) (14,207 ) Six Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 689,002 $ 22,260 $ — $ 711,262 Operating expenses 673,867 18,356 47,145 739,368 Operating income (loss) 15,135 3,904 (47,145 ) (28,106 ) (Loss) income before income taxes and equity in earnings of an investee (22,770 ) 1,746 (7,759 ) (28,783 ) Net (loss) income (23,554 ) 1,746 (7,226 ) (29,034 )

Property and Equipment, net

Property and Equipment, net	6 Months Ended
	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property and Equipment, net Property and equipment, net consist of the following: June 30, 2020 December 31, 2019 Land $ 12,155 $ 12,155 Buildings and improvements 201,847 201,447 Furniture, fixtures and equipment 58,968 59,174 Property and equipment, at cost 272,970 272,776 Less: accumulated depreciation (110,933 ) (105,529 ) Property and equipment, net $ 162,037 $ 167,247 We recorded depreciation expense relating to our property and equipment of $2,703 and $2,941 for the three months ended June 30, 2020 and 2019 , respectively, and $5,404 and $11,106 for the six months ended June 30, 2020 and 2019 , respectively. We review the carrying value of long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group of assets may not be recoverable. If there is an indication that the carrying value of an asset or group of assets is not recoverable, we estimate the recoverability of these assets by comparing projected undiscounted cash flows associated with these assets to their respective historical carrying values. If we conclude that an impairment exists, we determine the amount of impairment loss by comparing the historical carrying value of the asset or group of assets to their estimated fair value. We determine estimated fair value based on input from market participants, our experience selling similar assets, market conditions and internally developed cash flow models that our assets or asset groups are expected to generate, and we consider these estimates to be a Level 3 fair value measurement. As a result of our long-lived assets impairment review, we recorded $3,148 of impairment charges to certain of our long-lived assets for the six months ended June 30, 2019 . The fair value of the impaired assets was $4,520 as of June 30, 2019 . We also recorded long-lived impairment charges of $112 for the three and six months ended June 30, 2019 to reduce the carrying value of senior living communities we and DHC sold to their estimated fair value less costs to sell. No impairment charges were recorded for the three and six months ended June 30, 2020 . As of December 31, 2019 , we had $4,813 of net property and equipment classified as held for sale and presented separately in our condensed consolidated balance sheets to be transferred to DHC in connection with the Transaction Agreement. As of June 30, 2020 , we did not have net property and equipment classified as held for sale.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following tables detail the changes in accumulated other comprehensive income, net of tax, for the six months ended June 30, 2020 and 2019 : Six Months Ended June 30, 2020 Equity Investments Accumulated Balance at January 1, 2020 $ (175 ) $ 2,838 $ 2,663 Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments — (1,694 ) (1,694 ) Unrealized gain on debt investments, net of tax — 730 730 Equity in unrealized gain of an investee, net of tax — — — Realized gain on debt investments reclassified and included in net income, net of tax — (13 ) (13 ) Balance at June 30, 2020 $ (175 ) $ 1,861 $ 1,686 Six Months Ended June 30, 2019 Equity Investments Accumulated Balance at January 1, 2019 $ (266 ) $ 2,008 $ 1,742 Unrealized loss on debt investments, net of tax — (221 ) (221 ) Equity in unrealized gain of an investee, net of tax 136 — 136 Realized gain on debt investments reclassified and included in net loss, net of tax — 1 1 Balance at June 30, 2019 $ (130 ) $ 1,788 $ 1,658 Accumulated other comprehensive income represents the unrealized gains and losses of our debt investments, net of tax, and our share of other comprehensive income relating to our former investment in Affiliates Insurance Company, or AIC. The cost of debt investments sold and for which realized gains and losses are reclassified and included in net loss, net of tax, are determined on a specific identification basis. See Note 13 for more information regarding our arrangements with AIC. AIC dissolved on February 13, 2020. As of January 1, 2020, we reclassified certain of our investments from debt investments to equity investments to reflect the nature of the investment rather than the nature of the securities held by the investment. As a result, we reclassified the related unrealized gain of $1,694 from accumulated other comprehensive income to accumulated deficit on January 1, 2020. See Note 9 for more information regarding these investments.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We recognized a benefit for income taxes of $902 and a provision for income taxes of $506 for the three and six months ended June 30, 2020 , respectively. We recognized a benefit for income taxes of $705 and a provision for income taxes of $785 for the three and six ended June 30, 2019 , respectively. The benefit for income taxes for the three months ended June 30, 2020 is related to a decrease to the annual projection for federal and state income taxes. The provision for income taxes for the six months ended June 30, 2020 is related to federal income taxes, partially offset by a federal alternative minimum tax, or AMT, credit refund benefit and a federal benefit related to lease termination expense, plus state income taxes, including a state valuation allowance. See Note 15 for more information regarding the impact of certain provisions of the CARES Act relating to income and other taxes. The benefit for income taxes for the three months ended June 30, 2019 is related to a decrease to our cumulative federal and state income taxes through June 30, 2019 compared to March 31, 2019, and the provision for income taxes for the six months ended June 30, 2019 is related to federal and state income taxes. We previously determined it was more likely than not that a majority of our net deferred tax assets would not be realized and concluded that a valuation allowance was required, which eliminated the majority of our net deferred tax assets recorded in our condensed consolidated balance sheets. In the future, if we believe that we will more likely than not realize the benefit of these deferred tax assets, we will adjust our valuation allowance and recognize an income tax benefit, which may affect our results of operations.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share We calculated basic earnings per common share, or EPS, using the weighted average number of shares of our common shares outstanding during the periods. When applicable, diluted EPS reflects the more dilutive earnings per common share amount calculated using the two class method or the treasury stock method. The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Weighted average common shares for basic earnings per share 31,460 5,007 31,454 5,005 Effect of dilutive securities: unvested share awards 122 135 — — Weighted average common shares for diluted earnings per share (1) 31,582 5,142 31,454 5,005 (1) For the six months ended June 30, 2020 and 2019 , 123 and 122 , respectively, of our unvested common shares were not included in the calculation of diluted EPS because to do so would have been antidilutive.

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Fair Values of Assets and Liabilities	Fair Values of Assets and Liabilities Our assets recorded at fair value have been categorized based on a fair value hierarchy in accordance with ASC Topic 820, Fair Value Measurements and Disclosures . We apply the following fair value hierarchy, which prioritizes the inputs used to measure fair value into three levels. Level 1 - Inputs are based on quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access at the measurement date. Level 2 - Inputs are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments and quoted prices in inactive markets. Level 3 - Inputs are generated from model-based techniques that use significant assumptions that are not observable in the market. Recurring Fair Value Measures The tables below present certain of our assets measured at fair value at June 30, 2020 and December 31, 2019 , categorized by the level of inputs, as defined in the fair value hierarchy under GAAP, used in the valuation of each asset. As of June 30, 2020 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description Total (Level 1) (Level 2) (Level 3) Cash equivalents (1) $ 25,330 $ 25,330 $ — $ — Investments: Equity investments (2) High yield fund (3) 2,866 — 2,866 — International bond fund (4) 2,786 — 2,786 — Financial services industry 1,179 1,179 — — Healthcare 418 418 — — Technology 717 717 — — Other (5) 3,953 3,953 — — Total equity investments 11,919 6,267 5,652 — Debt investments (6) Industrial bonds 956 — 956 — Technology bonds 1,965 — 1,965 — Government bonds 9,985 9,985 — — Energy bonds 646 — 646 — Financial bonds 1,686 — 1,686 — Other 1,469 — 1,469 — Total debt investments 16,707 9,985 6,722 — Total investments 28,626 16,252 12,374 — Total $ 53,956 $ 41,582 $ 12,374 $ — As of December 31, 2019 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description Total (Level 1) (Level 2) (Level 3) Cash equivalents (1) $ 27,456 $ 27,456 $ — $ — Investments: Equity investments (2) Financial services industry 1,233 1,233 — — Healthcare 395 395 — — Technology 281 281 — — Other 4,500 4,500 — — Total equity investments 6,409 6,409 — — Debt investments (6) High yield fund (3) 2,977 — 2,977 — International bond fund (4) 2,680 — 2,680 — Industrial bonds 1,180 — 1,180 — Technology bonds 2,189 — 2,189 — Government bonds 9,537 9,537 — — Energy bonds 625 — 625 — Financial bonds (5) 1,853 — 1,853 — Other 725 — 725 — Total debt investments 21,766 9,537 12,229 — Total investments 28,175 15,946 12,229 — Total $ 55,631 $ 43,402 $ 12,229 $ — (1) Cash equivalents consist of short-term, highly liquid investments and money market funds held primarily for obligations arising from our self-insurance programs. Cash equivalents are reported in our condensed consolidated balance sheets as cash and cash equivalents and current and long-term restricted cash and cash equivalents. Cash equivalents include $22,793 and $23,014 of balances that are restricted at June 30, 2020 and December 31, 2019 , respectively. (2) The fair value of our equity investments is readily determinable. During the six months ended June 30, 2020 and 2019 , we received gross proceeds of $2,888 and $1,664 , respectively, in connection with the sales of equity investments and recorded gross realized gains totaling $296 and $282 , respectively, and gross realized losses totaling $214 and $45 , respectively. (3) The investment strategy of this fund is to invest principally in fixed income securities. The fund invests in such securities or investment vehicles as it considers appropriate to achieve the fund’s investment objective, which is to provide an above average rate of total return while attempting to limit investment risk by investing in a diversified portfolio of primarily fixed income securities issued by companies with below investment grade ratings. There are no unfunded commitments and the investment can be redeemed weekly. As of January 1, 2020, we reclassified this investment from a debt investment to an equity investment to reflect the nature of the investment rather than the nature of the securities held by the investment. (4) The investment strategy of this fund is to invest principally in fixed income securities issued by non-U.S. issuers. The fund invests in such securities or investment vehicles as it considers appropriate to achieve the fund’s investment objective, which is to provide an above average rate of total return while attempting to limit investment risk by investing in a diversified portfolio of U.S. dollar investment grade fixed income securities. There are no unfunded commitments and the investment can be redeemed weekly. As of January 1, 2020, we reclassified this investment from a debt investment to an equity investment to reflect the nature of the investment rather than the nature of the securities held by the investment. (5) As of January 1, 2020, we reclassified an investment with a fair value of $286 from a debt investment to an equity investment. (6) As of June 30, 2020 , our debt investments, which are classified as available for sale, had a fair value of $16,707 with an amortized cost of $15,581 ; the difference between the fair value and amortized cost amounts resulted in unrealized gains of $1,126 , net of unrealized losses of $0 . As of December 31, 2019 , our debt investments had a fair value of $21,766 with an amortized cost of $19,662 ; the difference between the fair value and amortized cost amounts resulted in unrealized gains of $2,114 , net of unrealized losses of $10 . Debt investments include $12,570 and $12,477 of balances that are restricted as of June 30, 2020 and December 31, 2019 , respectively. At June 30, 2020 , none of our debt or equity investments were in a loss position. During the six months ended June 30, 2020 and 2019 , we received gross proceeds of $1,963 and $2,782 , respectively, in connection with the sales of debt investments and recorded gross realized gains totaling $13 and $6 , respectively, and gross realized losses totaling $0 and $7 , respectively. We record gains and losses on the sales of these investments using the specific identification method. The amortized cost basis and fair value of debt securities at June 30, 2020 , by contractual maturity, are shown below. Amortized Cost Fair Value Due in one year or less $ 1,402 $ 1,417 Due after one year through five years 8,407 8,865 Due after five years through ten years 5,772 6,425 Total $ 15,581 $ 16,707 Our financial assets (which include cash equivalents and investments) have been valued at the transaction price and subsequently valued, at the end of each reporting period, utilizing third-party pricing services or other market observable data. During the six months ended June 30, 2020 , we did not change the type of inputs used to determine the fair value of any of our assets and liabilities that we measure at fair value. The carrying value of accounts receivable and accounts payable approximates fair value as of June 30, 2020 and December 31, 2019 . The carrying value and fair value of our mortgage notes payable were $7,355 and $8,360 , respectively, as of June 30, 2020 and $7,533 and $8,861 , respectively, as of December 31, 2019 , and are categorized in Level 3 of the fair value hierarchy. We estimate the fair value of our mortgage note payable by using discounted cash flow analyses and currently prevailing market terms as of the measurement date. Non-Recurring Fair Value Measures We review the carrying value of our long-lived assets, including our right of use assets, property and equipment and other intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying value of an asset or asset group may not be recoverable. See Note 5 for more information regarding fair value measurements related to impairments of our long-lived assets.

Indebtedness

Indebtedness	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Indebtedness	Indebtedness In June 2019, we entered into a second amended and restated credit agreement with Citibank, N.A., as administrative agent and lender, and a syndicate of other lenders pursuant to which we obtained a $65,000 secured revolving credit facility, or our credit facility, scheduled to mature on June 12, 2021. At our option, we may extend the maturity date for a one -year period, which is subject to payment of an extension fee and other conditions. We paid fees of $1,271 in 2019 in connection with the closing of our credit facility, which were deferred and are being amortized over the initial term of our credit facility. Our credit facility is available for general business purposes, including acquisitions, and provides for the issuance of letters of credit. We are required to pay interest at a rate of LIBOR plus a premium of 250 basis points per annum, or at a base rate, as defined in our credit agreement, plus 150 basis points per annum, on borrowings under our credit facility; the effective annual interest rates, as of June 30, 2020 , were 2.66% and 4.75% , respectively. We are also required to pay a quarterly commitment fee of 0.35% per annum on the unused portion of the available capacity under our credit facility. The weighted average annual interest rate for borrowings under our credit facility was 4.99% for the six months ended June 30, 2019 . As of June 30, 2020 , we had no borrowings outstanding under our credit facility. As of June 30, 2020 , we had letters of credit issued in an aggregate amount of $2,442 and $51,804 available for borrowings under our credit facility. We incurred aggregate interest expense and other associated costs related to our credit facilities of $275 and $775 for the three months ended June 30, 2020 and 2019 respectively, and $539 and $1,547 for the six months ended June 30, 2020 and 2019 respectively. Our credit facility is secured by real estate mortgages on 11 senior living communities with a combined 1,245 living units owned by certain of our subsidiaries that guarantee our obligations under our credit facility. Our credit facility is also secured by these subsidiaries’ accounts receivable and related collateral. The amount of available borrowings under our credit facility is subject to our having qualified collateral, which is primarily based on the value of the communities securing our obligations under our credit facility. Our credit facility provides for acceleration of payment of all amounts outstanding under our credit facility upon the occurrence and continuation of certain events of default, including a change of control of us, as defined in our credit agreement. Our credit agreement contains financial and other covenants, including those that restrict our ability to pay dividends or make other distributions to our shareholders in certain circumstances. At June 30, 2020 , we had seven irrevocable standby letters of credit outstanding, totaling $29,292 . One of these letters of credit in the amount of $26,850 , which secures our workers' compensation insurance program, is collateralized by approximately $21,543 of cash equivalents and $6,921 of debt and equity investments. This letter of credit expires in June 2021 and is automatically extended for one -year terms unless notice of nonrenewal is provided prior to the end of the applicable term. At June 30, 2020 , the cash equivalents collateralizing this letter of credit, including accumulated interest, were classified as short-term restricted cash and cash equivalents in our condensed consolidated balance sheets, and the debt and equity investments collateralizing this letter of credit are classified as short-term restricted investments in our condensed consolidated balance sheets. The remaining six irrevocable standby letters of credit outstanding at June 30, 2020 , totaling $2,442 , secure certain of our other obligations. As of June 30, 2020 , these letters of credit are scheduled to mature between October 2020 and September 2021 and are required by the beneficiaries to be renewed annually. As of June 30, 2020 , our obligations under these six letters of credit, totaling $2,442 , remain issued and outstanding under our credit facility. At June 30, 2020 , one of our senior living communities was encumbered by a mortgage that secured a note. This mortgage note contains standard mortgage covenants. We recorded a discount in connection with the assumption of this mortgage note as part of our acquisition of the community secured by this mortgage in order to record this mortgage note at its estimated fair value. We amortize this discount as an increase in interest expense until the maturity of this mortgage note. This mortgage note requires payments of principal and interest monthly until maturity. The following table is a summary of this mortgage note as of June 30, 2020 : Balance as of June 30, 2020 Contractual Stated Interest Rate Effective Interest Rate Maturity Date Monthly Payment Lender Type $ 7,355 (1) 6.20 % 6.70 % September 2032 $ 72 Federal Home Loan Mortgage Corporation (1) Contractual principal payment excluding unamortized discount and debt issuance costs of $241 . We incurred interest expense, net of discount amortization, of $125 and $131 with respect to the mortgage note for the three months ended June 30, 2020 and 2019 , respectively, and $253 and $265 for the six months ended June 30, 2020 and 2019 , respectively. Our mortgage note requires monthly payments into escrows for taxes, insurance and property replacement funds; certain withdrawals from escrows require Federal Home Loan Mortgage Corporation approval. As of June 30, 2020 , we believe we were in compliance with all applicable covenants under our credit facility and mortgage note. On April 1, 2019, we obtained from DHC a $25,000 credit facility in connection with the Restructuring Transactions. The DHC credit facility matured and was terminated on January 1, 2020, in connection with the completion of the Restructuring Transactions. There were no borrowings outstanding under the DHC credit facility at the time of such termination and we did not borrow any funds under the DHC credit facility during its term.

Leases and Management Agreement

Leases and Management Agreements with DHC	6 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Leases and Management Agreements with DHC	Leases and Management Agreements with DHC As of December 31, 2019, we leased 166 senior living communities from DHC pursuant to five master leases and we managed for DHC's account 78 senior living communities pursuant to management agreements. Effective as of January 1, 2020, we restructured our business arrangements with DHC as further described below, and after giving effect to the Restructuring Transactions, all the senior living communities owned by DHC that we operate are pursuant to management agreements. As of June 30, 2020 , we managed 241 senior living communities for the account of DHC pursuant to the New Management Agreements. Restructuring our Business Arrangements with DHC . Pursuant to the Transaction Agreement as of the Conversion Time: • our five then existing master leases with DHC as well as our then existing management and pooling agreements with DHC were terminated and replaced with the New Management Agreements; • we completed the Share Issuances pursuant to which we issued 10,268,158 of our common shares to DHC and an aggregate of 16,118,849 of our common shares to DHC’s shareholders of record as of December 13, 2019; and • as consideration for the Share Issuances, DHC provided to us $75,000 by assuming certain of our working capital liabilities and through cash payments; we recognized $22,899 in loss on termination of leases, representing the excess of the fair value of the Share Issuances of $97,899 compared to the consideration of $75,000 paid by DHC. As of June 30, 2020 , DHC assumed $51,547 of our working capital liabilities as part of the $75,000 it provided to us for the Share Issuances. We received cash of $23,453 from DHC during the three months ended June 30, 2020 . Also pursuant to the Transaction Agreement: (1) commencing February 1, 2019, the aggregate amount of monthly minimum rent payable to DHC by us under our master leases with DHC was reduced to $11,000 , subject to adjustment, and subsequently reduced in accordance with the Transaction Agreement as a result of DHC’s subsequent sales of certain of the leased senior living communities, and no additional rent was payable to DHC by us from such date through the Conversion Time; and (2) as of April 1, 2019, DHC purchased from us $49,155 of unencumbered Qualifying PP&E (as defined in the Transaction Agreement) related to DHC's senior living communities leased and operated by us. In accordance with ASC Topic 842, the reduction in the monthly minimum rent payable to DHC under our then- existing master leases with DHC pursuant to the Transaction Agreement was determined to be a modification of these master leases, and we reassessed the classification of these master leases based on the modified terms and determined that these master leases continued to be classified as long-term operating leases until certain contingent events were achieved. The remaining contingent events were achieved and accordingly, we remeasured the lease liability and right of use asset recorded in our condensed consolidated balance sheets as of December 31, 2019, to zero. Pursuant to the New Management Agreements, we receive a management fee equal to 5% of the gross revenues realized at the applicable senior living communities plus reimbursement for our direct costs and expenses related to such communities. Commencing with the 2021 calendar year, we may receive an annual incentive fee equal to 15% of the amount by which the annual EBITDA, of all communities on a combined basis exceeds the target EBITDA for all communities on a combined basis for such calendar year, provided that in no event shall the incentive fee be greater than 1.5% of the gross revenues realized at all communities on a combined basis for such calendar year. The target EBITDA for those communities on a combined basis is increased annually based on the greater of the annual increase of the Consumer Price Index, or CPI, or 2% , plus 6% of any capital investments funded at the managed communities on a combined basis in excess of the target capital investment. Unless otherwise agreed, the target capital investment increases annually based on the greater of the annual increase of CPI or 2% . The New Management Agreements expire in 2034, subject to our right to extend them for two consecutive five-year terms if we achieve certain performance targets for the combined managed communities portfolio, unless earlier terminated or timely notice of nonrenewal is delivered. The New Management Agreements provide DHC with the right to terminate any New Management Agreement for a community that does not earn 90% of the target EBITDA for such community for two consecutive calendar years or in any two of three consecutive calendar years, with the measurement period commencing January 1, 2021 (and the first termination not possible until the beginning of calendar year 2023); provided DHC may not in any calendar year terminate communities representing more than 20% of the combined revenues for all communities for the calendar year prior to such termination. Pursuant to a guaranty agreement dated as of January 1, 2020, made by us in favor of DHC’s applicable subsidiaries, we have guaranteed the payment and performance of each of our applicable subsidiary’s obligations under the applicable New Management Agreements. We recognized transaction costs of $175 and $1,133 related to the Transaction Agreement for the three months ended June 30, 2020 and 2019 , respectively, and $1,270 and $8,808 for the six months ended June 30, 2020 and 2019 , respectively. Senior Living Communities Formerly Leased from DHC . Prior to the Conversion Time, we were DHC's largest tenant and DHC was our largest landlord. Under our prior master leases with DHC, we paid DHC annual rent plus percentage rent equal to 4.0% of the increase in gross revenues at the applicable senior living communities over base year gross revenues as specified in the applicable lease. Pursuant to the Transaction Agreement, we were no longer required to pay any additional rent to DHC beginning February 1, 2019. Our total rent expense under all of our leases with DHC was $32,490 and $86,272 for the three and six months ended June 30, 2019 , respectively, which amount included estimated percentage rent of $0 and $1,547 for the three and six months ended June 30, 2019 , respectively. Pursuant to the Transaction Agreement, our rent payable to DHC was reduced by a total of $13,840 in aggregate for February and March 2019 and we did not pay such amount to DHC. However, as the Transaction Agreement was not entered into until April 1, 2019, our rent expense for the three months ended March 31, 2019 was not adjusted for the rent reduction for February and March 2019. Instead, the rent reduction for February and March 2019 was determined to be a lease inducement, for which a liability for the $13,840 was recorded as a reduction of the right of use asset on our condensed consolidated balance sheets as of March 31, 2019, and was amortized as a reduction of rent expense over the remaining terms of our master leases. As of December 31, 2019 , we had no outstanding rent obligation to DHC. Our previously existing leases with DHC were “triple net” leases, which generally required us to pay rent and all property operating expenses, to obtain, maintain and comply with all applicable permits and licenses necessary to operate the leased communities, to indemnify DHC from liability which may arise by reason of its ownership of the communities, to maintain the communities at our expense, to remove and dispose of hazardous substances at the communities in compliance with applicable laws and to maintain insurance on the communities for DHC’s and our benefit. Prior to the Transaction Agreement, under our previously existing leases with DHC, we could request that DHC purchase certain improvements to the leased communities in return for increases in annual rent in accordance with a formula specified in the applicable lease. Pursuant to the Transaction Agreement, the $56,342 and $78,920 , respectively, of capital improvements to the leased communities that we sold to DHC during the three and six months ended June 30, 2019 , did not result in increased rent. In accordance with ASC Topic 840, Leases , the sale and leaseback transaction we completed in June 2016 with DHC qualified for sale-leaseback accounting and we classified the related lease as an operating lease. Accordingly, the gain generated from the sale of $82,644 was deferred and was being amortized as a reduction of rent expense over the initial term of the related lease. Upon our adoption of ASC Topic 842 on January 1, 2019, we recorded a cumulative effect adjustment through retained earnings of $67,473 , eliminating our remaining deferred gain. Senior Living Communities Managed for the Account of DHC and its Related Entities . As of June 30, 2020 and 2019 , we managed 241 and 77 senior living communities, respectively, for the account of DHC. We earned management fees of $15,135 and $3,802 from the senior living communities we managed for the account of DHC for the three months ended June 30, 2020 and 2019 , respectively, and $31,597 and $7,521 for the six months ended June 30, 2020 and 2019 , respectively. In addition, we earned fees for our management of capital expenditure projects at the communities we managed for the account of DHC of $444 and $153 for the three months ended June 30, 2020 and 2019 , respectively, and $906 and $346 for the six months ended June 30, 2020 and 2019 , respectively. These amounts are included in management fee revenue in our condensed consolidated statements of operations. In connection with the completion of the Restructuring Transactions, effective as of January 1, 2020, we and DHC terminated the long-term management and pooling agreements and replaced them with the New Management Agreements, the terms of which are discussed above. We also provide certain other services to residents at some of the senior living communities we manage for the account of DHC, such as rehabilitation and wellness services. At senior living communities we manage for the account of DHC where we provide rehabilitation and wellness services on an outpatient basis, the residents, third party payers or government programs pay us for those rehabilitation and wellness services. At senior living communities we manage for the account of DHC where we provide inpatient rehabilitation and wellness services, DHC generally pays us for these services and charges for such services are included in amounts charged to residents, third party payers or government programs. We earned revenues of $5,814 and $1,513 for the three months ended June 30, 2020 and 2019 , respectively, and $13,871 and $3,188 for the six months ended June 30, 2020 and 2019 , respectively, for rehabilitation and wellness services we provided at senior living communities we manage for the account of DHC and that are payable by DHC. These amounts are included in rehabilitation and wellness services in our condensed consolidated statements of operations. Consistent with our historical accounting for these services at our managed communities, the revenues earned at these clinics that were previously located at senior living communities that we leased from DHC but as of the Conversion Time, we now manage, no longer constitute intercompany revenues and thus will not be eliminated in consolidation and will be recognized and reported as rehabilitation and wellness services revenues in our condensed consolidated statements of operations. We earned management fees of $126 and $69 for the three months ended June 30, 2020 and 2019 , respectively, and $253 and $140 for the six months ended June 30, 2020 and 2019 , respectively, for management services at a part of a senior living community DHC subleases to an affiliate, which amounts are included in management fee revenues in our condensed consolidated statements of operations. We lease space from DHC at certain of the senior living communities that we manage for DHC. We use this leased space for inpatient and outpatient rehabilitation and wellness services clinics. We recognized rent expense of $488 and $782 for the three and six months ended June 30, 2020 with respect to these leases.

Business Management Agreement w

Business Management Agreement with RMR LLC	6 Months Ended
	Jun. 30, 2020
Management Agreement [Abstract]
Business Management Agreement with RMR LLC	Business Management Agreement with RMR LLC The RMR Group LLC, or RMR LLC, provides us certain services pursuant to a business management agreement. Pursuant to our business management agreement with RMR LLC, we incurred aggregate fees and certain cost reimbursements payable to RMR LLC of $2,123 and $2,409 for the three months ended June 30, 2020 and 2019 , respectively, and $4,474 and $4,774 for the six months ended June 30, 2020 and 2019 , respectively, which amounts include reimbursements for our share of RMR LLC’s costs for providing our internal audit function. These amounts are included in general and administrative expenses in our condensed consolidated statements of operations. For further information about our relationship with RMR LLC, see our Annual Report.

Related Person Transactions

Related Person Transactions	6 Months Ended
	Jun. 30, 2020
Related Party Transactions [Abstract]
Related Person Transactions	Related Person Transactions We have relationships and historical and continuing transactions with DHC, RMR LLC and others affiliated with them, including other companies to which RMR LLC or its subsidiaries provide management services and some of which have trustees, directors and officers who are also our Directors or officers. The RMR Group Inc., or RMR Inc., is the managing member of RMR LLC. The Chair of our Board and one of our Managing Directors, Adam D. Portnoy, as the sole trustee of ABP Trust, is the controlling shareholder of RMR Inc. and is a managing director and the president and chief executive officer of RMR Inc. and an officer and employee of RMR LLC. Jennifer B. Clark, our other Managing Director and our Secretary, also serves as a managing director and the executive vice president, general counsel and secretary of RMR Inc., an officer and employee of RMR LLC and an officer of ABP Trust. Certain of our officers, and DHC’s officers, are also officers and employees of RMR LLC. Some of our Independent Directors also serve as independent trustees or independent directors of other public companies to which RMR LLC or its subsidiaries provide management services. Adam Portnoy serves as the chair of the boards of trustees or boards of directors of several of these public companies and as a managing director or managing trustee of these companies. Other officers of RMR LLC, including Ms. Clark, serve as managing trustees or managing directors of certain of these companies. DHC . DHC is currently our largest shareholder, owning, as of June 30, 2020 , 10,691,658 of our common shares, or 33.9% of our outstanding common shares. We manage for the account of DHC a substantial majority of the senior living communities we operate. RMR LLC provides management services to both us and DHC and Adam Portnoy is chair of the board of trustees and a managing trustee of DHC. Jennifer Clark is a managing trustee and the secretary of DHC. Effective as of January 1, 2020, we completed the Restructuring Transactions, pursuant to which we restructured our existing business arrangements with DHC. See Note 11 for more information regarding our relationships, agreements and transactions with DHC and certain parties related to it and us. RMR LLC. We have an agreement with RMR LLC to provide business management services to us. See Note 12 for more information regarding our relationship with RMR LLC. ABP Trust. ABP Trust and its subsidiaries, owned 1,972,783 of our common shares, representing 6.2% of our outstanding common shares as of June 30, 2020 . We lease our headquarters from a subsidiary of ABP Trust. Our rent expense for our headquarters, including utilities and real estate taxes that we pay as additional rent, was $424 and $451 for the three months ended June 30, 2020 and 2019 , respectively, and $859 and $971 for the six months ended June 30, 2020 and 2019 , respectively. The adoption of ASC Topic 842 resulted in the recognition of a lease liability and right of use asset, which amount was $982 and $1,901 as of June 30, 2020 and 2019 , respectively, with respect to our headquarters lease, using an incremental borrowing rate of 4.4% . The right of use asset has been reduced by the amount of accrued lease payments, which amounts are not material to our condensed consolidated financial statements. AIC . Until its dissolution on February 13, 2020, we, ABP Trust, DHC and four other companies to which RMR LLC provides management services owned AIC in equal amounts. Certain of our Directors and certain trustees or directors of the other AIC shareholders served on the board of directors of AIC. We and the other AIC shareholders historically participated in a combined property insurance program arranged and insured or reinsured in part by AIC. The policies under that program expired on June 30, 2019, and we and the other AIC shareholders elected not to renew the AIC property insurance program; we have instead purchased standalone property insurance coverage from unrelated third-party insurance providers. At June 30, 2020 and December 31, 2019 , our investment in AIC had a carrying value of $11 and $298 , respectively. These amounts are presented as equity investment of an investee in our condensed consolidated balance sheets. In June 2020, we received $287 in connection with AIC's dissolution. We did not recognize any income related to our investment in AIC for the three or six months ended June 30, 2020 , and recognized income of $130 and $534 for the three and six months ended June 30, 2019 , respectively, which amounts are presented as equity in earnings of an investee in our condensed consolidated statements of operations. Our other comprehensive income for the three and six months ended June 30, 2019 , includes our proportionate part of unrealized gains (losses) on securities that are owned by AIC related to our investment in AIC. Retirement and Separation Arrangements . In connection with their respective retirements, we entered into retirement agreements with our former officers, Bruce J. Mackey Jr. and Richard A. Doyle. Additionally, we entered into a separation agreement with our former Senior Vice President, Senior Living Operations, R. Scott Herzig. Pursuant to these agreements, we made cash payments of $600 and $510 to Mr. Mackey and Mr. Herzig, respectively, in January 2019, and made cash payments of $260 to Mr. Doyle in each of June 2019 and January 2020. In addition, we made release and transition payments to Mr. Mackey, in cash, totaling $136 and $268 for the three and six months ended June 30, 2019 , respectively, and to Mr. Doyle, in cash, totaling $7 for the three and six months ended June 30, 2019 . The full severance costs for Messrs. Mackey and Herzig were recorded during the fourth quarter of 2018 and the full severance cost for Mr. Doyle was recorded during the second quarter of 2019, as they met the criteria in ASC Topic 420, Exit or Disposal Cost Obligations . For further information about these and other such relationships and certain other related person transactions, see our Annual Report.

Legal Proceedings and Claims

Legal Proceedings and Claims	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings and Claims	Legal Proceedings and Claims We have been, are currently, and expect in the future to be involved in claims, lawsuits, and regulatory and other government audits, investigations and proceedings arising in the ordinary course of our business, some of which may involve material amounts. Also, the defense and resolution of these claims, lawsuits, and regulatory and other government audits, investigations and proceedings may require us to incur significant expense. We account for claims and litigation losses in accordance with ASC Topic 450, Contingencies , or ASC Topic 450. Under ASC Topic 450, loss contingency provisions are recorded for probable and estimable losses at our best estimate of a loss or, when a best estimate cannot be made, at our estimate of the minimum loss. These estimates are often developed prior to knowing the amount of the ultimate loss, require the application of considerable judgment and are refined as additional information becomes known. Accordingly, we are often initially unable to develop a best estimate of loss and, therefore, the estimated minimum loss amount, which could be zero , is recorded; then, as information becomes known, the minimum loss amount is updated, as appropriate. A minimum or best estimate amount may be increased or decreased when events result in a changed expectation. We are defendants in two lawsuits filed by former employees in California. The first lawsuit, Lefevre v. Five Star Quality Care, Inc. was filed in San Bernardino County Superior Court in May 2015 and the second lawsuit, Mandviwala v. Five Star Quality Care, Inc. d/b/a Five Star Quality Care - CA, Inc. and FVE Managers, Inc., our wholly owned subsidiary, was filed in Orange County Superior Court in July 2015. The claims asserted against us in the similar, though not identical, complaints include: (i) failure to pay all wages due, (ii) failure to pay overtime, (iii) failure to provide meal and rest breaks, (iv) failure to provide itemized, printed wage statements, (v) failure to keep accurate payroll records and (vi) failure to reimburse business expenses. Both plaintiffs assert causes of action on behalf of themselves and on behalf of other similarly situated employees, including causes of action pursuant to the California Labor Code Private Attorney General Act, or PAGA. On July 10, 2020, the parties of Lefevre v. Five Star Quality Care, Inc. agreed, without admitting fault, to settle their individual and PAGA claims. The settlement remains subject to a final definitive settlement agreement and to court and regulatory approvals. The settlement will effectively extinguish the Mandviwala v. Five Star Quality Care, Inc. d/b/a Five Star Quality Care - CA, Inc. and FVE Managers, Inc. lawsuit. We recognized $2,473 in other senior living operating expenses related to the settlement of these claims during the three months ended June 30, 2020.

Covid-19 Pandemic

Covid-19 Pandemic	6 Months Ended
	Jun. 30, 2020
Unusual or Infrequent Items, or Both [Abstract]
COVID-19 Pandemic	COVID-19 Pandemic On March 11, 2020, the World Health Organization declared the disease caused by the novel coronavirus SARS-CoV-2, or COVID-19, a pandemic. The global spread of COVID-19 has created significant volatility, uncertainty and economic disruption worldwide. Governments in affected regions have implemented and may continue to implement, safety precautions, including quarantines, travel restrictions, business closures and other public safety measures. On March 13, 2020, the pandemic was declared a national emergency by the President of the United States effective as of March 1, 2020, and it has significantly disrupted, and likely will continue to significantly disrupt, the United States economy, our business and the senior living industry as a whole. In response to the COVID-19 pandemic, the CARES Act was enacted on March 27, 2020. The CARES Act, among other things, provides billions of dollars of relief to certain individuals and businesses suffering from the impact of the COVID-19 pandemic. Under the CARES Act, a Provider Relief Fund was established for allocation by HHS. On April 10, 2020, HHS began to distribute these funds, or the General Distribution, to healthcare providers who received Medicare fee-for-service reimbursement in 2018 and 2019. Each healthcare provider's allocation of the General Distribution was determined based on 2.0% of a provider's 2018 (or most recent complete tax year) gross receipts, regardless of the provider's payer mix. We received $1,720 in General Distribution funds for rehabilitation and wellness services clinics and home health operations that participate in Medicare as of June 30, 2020. We recognized $1,499 as other operating income for General Distribution funds for which we have met the required terms and conditions for the three and six months ended June 30, 2020, and $221 of funds for which we have not yet met the required terms and conditions were included in accrued expenses and other current liabilities in the condensed consolidated financial statements at June 30, 2020. On May 22, 2020, HHS announced that Provider Relief Funds would be available to SNFs with six or more certified beds that have been impacted by the COVID-19 pandemic, or the Targeted SNF Distribution. We received $4,715 in Targeted SNF Distribution funds primarily related to SNFs that we previously leased from DHC during 2018 and 2019 and we are evaluating whether we are eligible to retain these funds. In the event we determine we are not eligible to retain the funds received, we will remit the funds to HHS by August 20, 2020. We included the amount of these funds in accrued expenses and other current liabilities in our condensed consolidated financial statements at June 30, 2020. The terms and conditions of the General Distribution and Targeted SNF Distribution require that the funds are utilized to compensate for lost revenues that are attributable to the COVID-19 pandemic and for eligible costs to prevent, prepare for and respond to the COVID-19 pandemic that are not covered by other sources. In addition, the funds may be utilized for building or constructing temporary structures to expand capacity for COVID-19 patient care to provide healthcare services to non-COVID-19 patients in a separate area from where COVID-19 patients are being treated. Further, fund recipients are required to be participating in Medicare at the time of distribution and are subject to certain other terms and conditions, including quarterly reporting requirements. In addition, the General Distribution requires fund recipients to have billed Medicare during 2019 and to continue to provide care after January 31, 2020 for diagnosis, testing or care for individuals with possible or actual cases of COVID-19. Any funds not used in accordance with the terms and conditions, must be returned to HHS. The CARES Act also delays the payment of required federal tax deposits for certain payroll taxes, including the employer's share of Old-Age, Survivors, and Disability Insurance Tax, or Social Security, employment taxes, incurred between March 27, 2020 and December 31, 2020. Amounts will be considered timely paid if 50% of the deferred amount is paid by December 31, 2021, and the remainder by December 31, 2022. As of June 30, 2020, we have deferred $8,784 of employer payroll taxes, of which $7,055 are required to be funded by us and will be reimbursed by DHC pursuant to the New Management Agreements, and are included in other long-term liabilities in the condensed consolidated financial statements. The Sequestration Transparency Act of 2012 subjected all Medicare fee-for-service payments to a 2% sequestration reduction, or the 2% Medicare Sequestration. The CARES Act temporarily suspends the 2% Medicare Sequestration for the period from May 1, 2020 to December 31, 2020, which will benefit our rehabilitation and wellness services segment and the senior living communities we manage in the form of increased rates for services provided and the management fees we earn from these communities as a result. Increases in rates are recognized in revenue in the period services are provided. The Tax Cuts and Jobs Act of 2017 repealed the AMT and allowed corporations to fully offset regular tax liability with AMT credits. Any remaining AMT credit amount became refundable incrementally from tax years 2018 through 2021. The CARES Act accelerates the refund schedule, permitting corporate taxpayers to claim the refund in full in either tax year 2018 or 2019. We intend to claim an AMT credit refund of $554 for tax year 2019. In connection with the COVID-19 pandemic, we have experienced occupancy declines, increased labor costs and increased costs related to medical and sanitation supplies and certain other costs. Additionally, we have purchased $8,118 of personal protective equipment, or PPE, for future use at the senior living communities we manage or operate. We cannot predict the extent and duration of the COVID-19 pandemic or the severity and duration of its economic impact, but we expect it will be substantial. We also cannot predict the extent the relief provided by the CARES Act will offset the financial losses caused by the COVID-19 pandemic, or if we will receive additional funds under the other Provider Relief Fund or other programs, but we expect it will not make us whole.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Subsequent Events</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">[Place holder for any potential subsequent event after 6/30/2020.]</font></div></div>

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Estimates and Assumptions	Estimates and Assumptions. The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that may affect the amounts reported in these financial statements and related notes. Actual results could differ from those estimates. Significant estimates in our condensed consolidated financial statements relate to revenue recognition, including contractual allowances, the allowance of doubtful accounts, self-insurance reserves, long-lived assets and estimates concerning our provisions for income taxes.
Recent Accounting Pronouncements	Recently Adopted Accounting Pronouncements. On January 1, 2020, we adopted ASU No. 2018-13, Fair Value Measurement (Topic 820) issued by the Financial Accounting Standards Board, or FASB, which modifies certain disclosure requirements in Topic 820, such as the removal of the need to disclose the amount of and reason for transfers between Level 1 and Level 2 of the fair value hierarchy, and several changes related to Level 3 fair value measurements. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. On January 1, 2020, we adopted ASU No. 2018-15, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40) issued by the FASB, using the prospective transition method, which aligns the requirements for capitalizing implementation costs incurred in a cloud computing hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal use software. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740) : Simplifying the Accounting for Income Taxes , which simplifies certain requirements under Topic 740, including eliminating the exception to intraperiod tax allocation when there is a loss from continuing operations and income from other sources, such as other comprehensive income or discontinued operations. We adopted this ASU on January 1, 2020. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326) , which requires a financial asset or a group of financial assets measured at amortized cost basis to be presented at the net amount expected to be collected. This ASU eliminates the probable initial recognition threshold and instead requires reflection of an entity’s current estimate of all expected credit losses. In addition, this ASU amends the current available for sale security other-than-temporary impairment model for debt securities. The length of time that the fair value of an available for sale debt security has been below the amortized cost will no longer impact the determination of whether a credit loss exists and credit losses will now be limited to the difference between a security’s amortized cost basis and its fair value. In November 2018, the FASB issued ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments-Credit Losses , which amends the transition and effective date for nonpublic entities and smaller reporting companies and clarifies that receivables arising from operating leases are not in the scope of this ASU. Entities will apply the provisions of the ASU as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. This ASU is effective for smaller reporting companies for reporting periods beginning after December 15, 2022. We are assessing the potential impact that the adoption of this ASU (and the related clarifying guidance issued by the FASB) will have on our consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides temporary optional expedients and exceptions on contract modifications meeting certain criteria to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to the alternative reference rates. For a contract that meets the criteria, this ASU generally allows an entity to account for and present modifications as an event that does not require remeasurement at the modification date or reassessment of a previous accounting determination. This ASU was effective upon issuance and can be applied through December 31, 2022. We are assessing the potential impact that this ASU will have on our consolidated financial statements.

Revenue and Other Operating I_2

Revenue and Other Operating Income (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of revenue	The following tables present revenue from contracts with customers disaggregated by type of payer, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors: Three Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Total Private payer $ 19,293 $ 1,214 $ 20,507 Medicare and Medicaid programs 297 9,564 9,861 Other third-party payer programs — 8,490 8,490 Management fees 15,705 — 15,705 Reimbursed community-level costs incurred on behalf of managed communities 224,104 — 224,104 Other reimbursed expenses 6,417 — 6,417 Total revenues $ 265,816 $ 19,268 $ 285,084 Three Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Total Private payer $ 200,829 $ 640 $ 201,469 Medicare and Medicaid programs 54,714 6,128 60,842 Other third-party payer programs 7,465 4,720 12,185 Management fees 4,024 — 4,024 Reimbursed community-level costs incurred on behalf of managed communities 77,219 — 77,219 Total revenues $ 344,251 $ 11,488 $ 355,739 Six Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Total Private payer $ 39,574 $ 2,111 $ 41,685 Medicare and Medicaid programs 1,013 19,134 20,147 Other third-party payer programs — 19,407 19,407 Management fees 32,756 — 32,756 Reimbursed community-level costs incurred on behalf of managed communities 456,120 — 456,120 Other reimbursed expenses 12,414 — 12,414 Total revenues $ 541,877 $ 40,652 $ 582,529 Six Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Total Private payer $ 399,615 $ 1,256 $ 400,871 Medicare and Medicaid programs 114,300 11,571 125,871 Other third-party payer programs 15,256 9,433 24,689 Management fees 8,007 — 8,007 Reimbursed community-level costs incurred on behalf of managed communities 151,824 — 151,824 Total revenues $ 689,002 $ 22,260 $ 711,262

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Schedule of segment information	Results of operations and selected financial information by reportable segment and the reconciliation to the condensed consolidated financial statements are as follows: Three Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 265,816 $ 20,767 $ — $ 286,583 Operating expenses 250,719 16,259 18,261 285,239 Operating income (loss) 15,097 4,508 (18,261 ) 1,344 Income (loss) before income taxes and equity in earnings of an investee 842 3,536 (2,278 ) 2,100 Net income (loss) 842 3,536 (1,376 ) 3,002 Three Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 344,251 $ 11,488 $ — $ 355,739 Operating expenses 321,625 9,650 20,733 352,008 Operating income (loss) 22,626 1,838 (20,733 ) 3,731 Income (loss) before income taxes and equity in earnings of an investee 3,864 743 (1,261 ) 3,346 Net income (loss) 4,569 743 (1,131 ) 4,181 Six Months Ended June 30, 2020 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 541,877 $ 42,151 $ — $ 584,028 Operating expenses 506,338 33,877 33,845 574,060 Operating income (loss) 35,539 8,274 (33,845 ) 9,968 Income (loss) before income taxes and equity in earnings of an investee 5,707 6,234 (25,642 ) (13,701 ) Net income (loss) 5,707 6,234 (26,148 ) (14,207 ) Six Months Ended June 30, 2019 Senior Living Rehabilitation and Wellness Services Corporate and Other Total Total revenues and other operating income $ 689,002 $ 22,260 $ — $ 711,262 Operating expenses 673,867 18,356 47,145 739,368 Operating income (loss) 15,135 3,904 (47,145 ) (28,106 ) (Loss) income before income taxes and equity in earnings of an investee (22,770 ) 1,746 (7,759 ) (28,783 ) Net (loss) income (23,554 ) 1,746 (7,226 ) (29,034 )

Property and Equipment, net (Ta

Property and Equipment, net (Tables)	6 Months Ended
	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Schedule of property and equipment, net	Property and equipment, net consist of the following: June 30, 2020 December 31, 2019 Land $ 12,155 $ 12,155 Buildings and improvements 201,847 201,447 Furniture, fixtures and equipment 58,968 59,174 Property and equipment, at cost 272,970 272,776 Less: accumulated depreciation (110,933 ) (105,529 ) Property and equipment, net $ 162,037 $ 167,247

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2020
Equity [Abstract]
Schedule of changes in accumulated other comprehensive income, net of tax	The following tables detail the changes in accumulated other comprehensive income, net of tax, for the six months ended June 30, 2020 and 2019 : Six Months Ended June 30, 2020 Equity Investments Accumulated Balance at January 1, 2020 $ (175 ) $ 2,838 $ 2,663 Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments — (1,694 ) (1,694 ) Unrealized gain on debt investments, net of tax — 730 730 Equity in unrealized gain of an investee, net of tax — — — Realized gain on debt investments reclassified and included in net income, net of tax — (13 ) (13 ) Balance at June 30, 2020 $ (175 ) $ 1,861 $ 1,686 Six Months Ended June 30, 2019 Equity Investments Accumulated Balance at January 1, 2019 $ (266 ) $ 2,008 $ 1,742 Unrealized loss on debt investments, net of tax — (221 ) (221 ) Equity in unrealized gain of an investee, net of tax 136 — 136 Realized gain on debt investments reclassified and included in net loss, net of tax — 1 1 Balance at June 30, 2019 $ (130 ) $ 1,788 $ 1,658

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares	The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 Weighted average common shares for basic earnings per share 31,460 5,007 31,454 5,005 Effect of dilutive securities: unvested share awards 122 135 — — Weighted average common shares for diluted earnings per share (1) 31,582 5,142 31,454 5,005 (1) For the six months ended June 30, 2020 and 2019 , 123 and 122 , respectively, of our unvested common shares were not included in the calculation of diluted EPS because to do so would have been antidilutive.

Fair Values of Assets and Lia_2

Fair Values of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring and non recurring basis, categorized by the level of inputs used in the valuation of each asset	The tables below present certain of our assets measured at fair value at June 30, 2020 and December 31, 2019 , categorized by the level of inputs, as defined in the fair value hierarchy under GAAP, used in the valuation of each asset. As of June 30, 2020 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description Total (Level 1) (Level 2) (Level 3) Cash equivalents (1) $ 25,330 $ 25,330 $ — $ — Investments: Equity investments (2) High yield fund (3) 2,866 — 2,866 — International bond fund (4) 2,786 — 2,786 — Financial services industry 1,179 1,179 — — Healthcare 418 418 — — Technology 717 717 — — Other (5) 3,953 3,953 — — Total equity investments 11,919 6,267 5,652 — Debt investments (6) Industrial bonds 956 — 956 — Technology bonds 1,965 — 1,965 — Government bonds 9,985 9,985 — — Energy bonds 646 — 646 — Financial bonds 1,686 — 1,686 — Other 1,469 — 1,469 — Total debt investments 16,707 9,985 6,722 — Total investments 28,626 16,252 12,374 — Total $ 53,956 $ 41,582 $ 12,374 $ — As of December 31, 2019 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Description Total (Level 1) (Level 2) (Level 3) Cash equivalents (1) $ 27,456 $ 27,456 $ — $ — Investments: Equity investments (2) Financial services industry 1,233 1,233 — — Healthcare 395 395 — — Technology 281 281 — — Other 4,500 4,500 — — Total equity investments 6,409 6,409 — — Debt investments (6) High yield fund (3) 2,977 — 2,977 — International bond fund (4) 2,680 — 2,680 — Industrial bonds 1,180 — 1,180 — Technology bonds 2,189 — 2,189 — Government bonds 9,537 9,537 — — Energy bonds 625 — 625 — Financial bonds (5) 1,853 — 1,853 — Other 725 — 725 — Total debt investments 21,766 9,537 12,229 — Total investments 28,175 15,946 12,229 — Total $ 55,631 $ 43,402 $ 12,229 $ — (1) Cash equivalents consist of short-term, highly liquid investments and money market funds held primarily for obligations arising from our self-insurance programs. Cash equivalents are reported in our condensed consolidated balance sheets as cash and cash equivalents and current and long-term restricted cash and cash equivalents. Cash equivalents include $22,793 and $23,014 of balances that are restricted at June 30, 2020 and December 31, 2019 , respectively. (2) The fair value of our equity investments is readily determinable. During the six months ended June 30, 2020 and 2019 , we received gross proceeds of $2,888 and $1,664 , respectively, in connection with the sales of equity investments and recorded gross realized gains totaling $296 and $282 , respectively, and gross realized losses totaling $214 and $45 , respectively. (3) The investment strategy of this fund is to invest principally in fixed income securities. The fund invests in such securities or investment vehicles as it considers appropriate to achieve the fund’s investment objective, which is to provide an above average rate of total return while attempting to limit investment risk by investing in a diversified portfolio of primarily fixed income securities issued by companies with below investment grade ratings. There are no unfunded commitments and the investment can be redeemed weekly. As of January 1, 2020, we reclassified this investment from a debt investment to an equity investment to reflect the nature of the investment rather than the nature of the securities held by the investment. (4) The investment strategy of this fund is to invest principally in fixed income securities issued by non-U.S. issuers. The fund invests in such securities or investment vehicles as it considers appropriate to achieve the fund’s investment objective, which is to provide an above average rate of total return while attempting to limit investment risk by investing in a diversified portfolio of U.S. dollar investment grade fixed income securities. There are no unfunded commitments and the investment can be redeemed weekly. As of January 1, 2020, we reclassified this investment from a debt investment to an equity investment to reflect the nature of the investment rather than the nature of the securities held by the investment. (5) As of January 1, 2020, we reclassified an investment with a fair value of $286 from a debt investment to an equity investment. (6) As of June 30, 2020 , our debt investments, which are classified as available for sale, had a fair value of $16,707 with an amortized cost of $15,581 ; the difference between the fair value and amortized cost amounts resulted in unrealized gains of $1,126 , net of unrealized losses of $0 . As of December 31, 2019 , our debt investments had a fair value of $21,766 with an amortized cost of $19,662 ; the difference between the fair value and amortized cost amounts resulted in unrealized gains of $2,114 , net of unrealized losses of $10 . Debt investments include $12,570 and $12,477 of balances that are restricted as of June 30, 2020 and December 31, 2019 , respectively. At June 30, 2020 , none of our debt or equity investments were in a loss position. During the six months ended June 30, 2020 and 2019 , we received gross proceeds of $1,963 and $2,782 , respectively, in connection with the sales of debt investments and recorded gross realized gains totaling $13 and $6 , respectively, and gross realized losses totaling $0 and $7 , respectively. We record gains and losses on the sales of these investments using the specific identification method.
Schedule of debt securities	The amortized cost basis and fair value of debt securities at June 30, 2020 , by contractual maturity, are shown below. Amortized Cost Fair Value Due in one year or less $ 1,402 $ 1,417 Due after one year through five years 8,407 8,865 Due after five years through ten years 5,772 6,425 Total $ 15,581 $ 16,707

Indebtedness (Tables)

Indebtedness (Tables)	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Summary of mortgages	The following table is a summary of this mortgage note as of June 30, 2020 : Balance as of June 30, 2020 Contractual Stated Interest Rate Effective Interest Rate Maturity Date Monthly Payment Lender Type $ 7,355 (1) 6.20 % 6.70 % September 2032 $ 72 Federal Home Loan Mortgage Corporation (1) Contractual principal payment excluding unamortized discount and debt issuance costs of $241 .

Basis of Presentation and Org_2

Basis of Presentation and Organization (Details) $ in Thousands	Jan. 01, 2020USD ($)shares	Apr. 01, 2019lease	Jun. 30, 2020USD ($)stateliving_unitcommunitybedpropertysuiteapartment	Dec. 31, 2019lease	Jun. 30, 2019property	Jan. 01, 2019USD ($)
Real estate properties
Additional consideration from share issuances | $			$ 23,453
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments | $	$ (1,694)					$ 67,473
Accumulated Deficit
Real estate properties
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments | $	1,694					$ 67,473
Transaction Agreement | Affiliated Entity
Real estate properties
Number of properties managed | community			241
Number of master leases | lease				5
Transaction Agreement | Shares Issued | Affiliated Entity
Real estate properties
Additional consideration from share issuances | $	$ 75,000
Diversified Healthcare Trust | Transaction Agreement | Shares Issued | Affiliated Entity
Real estate properties
Number of shares sold (in shares) | shares	10,268,158
Diversified Healthcare Trust Shareholders | Transaction Agreement | Shares Issued | Affiliated Entity
Real estate properties
Number of shares sold (in shares) | shares	16,118,849
Senior Living Communities
Real estate properties
Number of properties operated			265
Number of states in which real estate properties are located | state			32
Number of living units in properties operated | living_unit			30,660
Number of units in properties managed | living_unit			28,348
Number of properties owned and operated			20
Number of living units in properties owned and operated | living_unit			2,108
Number of communities operating | community			4
Number of units in properties leased and operated | living_unit			204
Senior Living Communities | Affiliated Entity
Real estate properties
Number of properties managed					77
Senior Living Communities | Transaction Agreement | Affiliated Entity
Real estate properties
Number of master leases | lease		5
Independent and Assisted Living Communities
Real estate properties
Number of properties operated			254
Number of living units in properties operated | living_unit			29,396
SNF
Real estate properties
Number of properties operated			11
Number of living units in properties operated | living_unit			1,264
Independent Living Apartment
Real estate properties
Number of living units in properties operated | apartment			11,061
Assisted Living Suites
Real estate properties
Number of living units in properties operated | suite			16,202
Skilled Nursing Units
Real estate properties
Number of living units in properties operated | bed			3,397
Inpatient Rehabilitation Clinics | Diversified Healthcare Trust
Real estate properties
Number of properties operated			40
Outpatient Rehabilitation Clinics | Diversified Healthcare Trust
Real estate properties
Number of properties operated			206
Number of properties owned and operated			152
Number of properties owned or leased			54

Revenue and Other Operating I_3

Revenue and Other Operating Income (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Management fees as a percentage of gross revenues	5.00%		5.00%
Management fee as a percentage of construction costs	3.00%		3.00%
Incentive fee percentage	15.00%		15.00%
Incentive management fee maximum	1.50%		1.50%
Revenues	$ 286,583,000	$ 355,739,000	$ 584,028,000	$ 711,262,000
Accrued expenses and other current liabilities	49,525,000		49,525,000		$ 55,981,000
Private payer
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	20,507,000	201,469,000	41,685,000	400,871,000
Medicare and Medicaid programs
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9,861,000	60,842,000	20,147,000	125,871,000
Other third-party payer programs
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	8,490,000	12,185,000	19,407,000	24,689,000
Management fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	15,705,000	4,024,000	32,756,000	8,007,000
Reimbursed community-level costs incurred on behalf of managed communities
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	224,104,000	77,219,000	456,120,000	151,824,000
Other reimbursed expenses
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,417,000	0	12,414,000	0
Revenues		0
Total revenues
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	285,084,000	355,739,000	582,529,000	711,262,000
Other operating income
Disaggregation of Revenue [Line Items]
Revenues	1,499,000	0	1,499,000	0
CARES Act
Disaggregation of Revenue [Line Items]
Accrued expenses and other current liabilities	221,000		221,000
Senior Living | Private payer
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	19,293,000	200,829,000	39,574,000	399,615,000
Senior Living | Medicare and Medicaid programs
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	297,000	54,714,000	1,013,000	114,300,000
Senior Living | Other third-party payer programs
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	7,465,000	0	15,256,000
Senior Living | Management fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	15,705,000	4,024,000	32,756,000	8,007,000
Senior Living | Reimbursed community-level costs incurred on behalf of managed communities
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	224,104,000	77,219,000	456,120,000	151,824,000
Senior Living | Other reimbursed expenses
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,417,000		12,414,000
Senior Living | Total revenues
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	265,816,000	344,251,000	541,877,000	689,002,000
Rehabilitation and Wellness Services | Private payer
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,214,000	640,000	2,111,000	1,256,000
Rehabilitation and Wellness Services | Medicare and Medicaid programs
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9,564,000	6,128,000	19,134,000	11,571,000
Rehabilitation and Wellness Services | Other third-party payer programs
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	8,490,000	4,720,000	19,407,000	9,433,000
Rehabilitation and Wellness Services | Management fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Rehabilitation and Wellness Services | Reimbursed community-level costs incurred on behalf of managed communities
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0	0	0
Rehabilitation and Wellness Services | Other reimbursed expenses
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0		0
Rehabilitation and Wellness Services | Total revenues
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 19,268,000	$ 11,488,000	$ 40,652,000	$ 22,260,000
Minimum
Disaggregation of Revenue [Line Items]
Payment term			30 days
Consumer price index percentage			2.00%
Maximum
Disaggregation of Revenue [Line Items]
Payment term			1 year
Consumer price index percentage			6.00%

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Jun. 30, 2020USD ($)segment	Jun. 30, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment					2
Total revenues and other operating income	$ 286,583		$ 355,739		$ 584,028	$ 711,262
Operating expenses	285,239		352,008		574,060	739,368
Operating income (loss)	1,344		3,731		9,968	(28,106)
Income (loss) before income taxes and equity in earnings of an investee	2,100		3,346		(13,701)	(28,783)
Net income (loss)	3,002	$ (17,209)	4,181	$ (33,215)	(14,207)	(29,034)
Operating Segments | Senior Living
Segment Reporting Information [Line Items]
Total revenues and other operating income	265,816		344,251		541,877	689,002
Operating expenses	250,719		321,625		506,338	673,867
Operating income (loss)	15,097		22,626		35,539	15,135
Income (loss) before income taxes and equity in earnings of an investee	842		3,864		5,707	(22,770)
Net income (loss)	842		4,569		5,707	(23,554)
Operating Segments | Rehabilitation and Wellness Services
Segment Reporting Information [Line Items]
Total revenues and other operating income	20,767		11,488		42,151	22,260
Operating expenses	16,259		9,650		33,877	18,356
Operating income (loss)	4,508		1,838		8,274	3,904
Income (loss) before income taxes and equity in earnings of an investee	3,536		743		6,234	1,746
Net income (loss)	3,536		743		6,234	1,746
Corporate and Other
Segment Reporting Information [Line Items]
Total revenues and other operating income	0		0		0	0
Operating expenses	18,261		20,733		33,845	47,145
Operating income (loss)	(18,261)		(20,733)		(33,845)	(47,145)
Income (loss) before income taxes and equity in earnings of an investee	(2,278)		(1,261)		(25,642)	(7,759)
Net income (loss)	$ (1,376)		$ (1,131)		$ (26,148)	$ (7,226)

Property and Equipment, net (De

Property and Equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 272,970		$ 272,970		$ 272,776
Less: accumulated depreciation	(110,933)		(110,933)		(105,529)
Property and equipment, net	162,037		162,037		167,247
Depreciation expenses	2,703	$ 2,941	5,404	$ 11,106
Long lived asset impairment charges				3,148
Fair value of impaired assets		4,520		4,520
Long lived impairment charges	0	$ 112		$ 112
Disposal group, held-for-sale
Property, Plant and Equipment [Line Items]
Amount of improvements for property and equipment under lease agreement					4,813
Land
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	12,155		12,155		12,155
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	201,847		201,847		201,447
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 58,968		$ 58,968		$ 59,174

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020	Jan. 01, 2019
Changes in accumulated other comprehensive income
Beginning balance	$ 200,609	$ 105,388	$ 119,981	$ 71,169
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments					$ (1,694)	$ 67,473
Unrealized gain (loss) on debt investments, net of tax			730	(221)
Equity in unrealized gain of an investee, net of tax	0	71	0	136
Realized gain on debt investments reclassified and included in net income, net of tax			(13)	1
Ending balance	204,106	109,746	204,106	109,746
Equity Investment of an Investee
Changes in accumulated other comprehensive income
Beginning balance			(175)	(266)
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments					0
Unrealized gain (loss) on debt investments, net of tax			0	0
Equity in unrealized gain of an investee, net of tax			0	136
Realized gain on debt investments reclassified and included in net income, net of tax			0	0
Ending balance	(175)	(130)	(175)	(130)
Investments
Changes in accumulated other comprehensive income
Beginning balance			2,838	2,008
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments					(1,694)
Unrealized gain (loss) on debt investments, net of tax			730	(221)
Equity in unrealized gain of an investee, net of tax			0	0
Realized gain on debt investments reclassified and included in net income, net of tax			(13)	1
Ending balance	1,861	1,788	1,861	1,788
Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income
Beginning balance	1,386	1,606	2,663	1,742
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments					(1,694)
Ending balance	1,686	1,658	1,686	1,658
Accumulated Deficit
Changes in accumulated other comprehensive income
Beginning balance	(260,699)	(258,378)	(245,184)	(292,636)
Cumulative effect adjustment to beginning accumulated deficit and accumulated other comprehensive income in connection with a reclassification of equity investments previously classified as debt investments					$ 1,694	$ 67,473
Ending balance	$ (257,697)	$ (254,197)	$ (257,697)	$ (254,197)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ (902)	$ (705)	$ 506	$ 785

Earnings Per Share (Details)

Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Weighted average shares outstanding—basic (in shares)	31,460	5,007	31,454	5,005
Effect of dilutive securities: unvested share awards (in shares)	122	135	0	0
Weighted average shares outstanding—diluted (in shares)	31,582	5,142	31,454	5,005
Potentially dilutive restricted unvested common shares, not included in diluted EPS calculation (in shares)			123	122

Fair Values of Assets and Lia_3

Fair Values of Assets and Liabilities - Recurring Measurements (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Fair Values of Assets and Liabilities
Cash equivalents		$ 25,330		$ 27,456
Equity investments		11,919		6,409
Debt investments		16,707		21,766
Total investments		28,626		28,175
Total		53,956		55,631
Restricted cash		22,793		23,014
Gross proceeds from sale of equity securities		2,888	$ 1,664
Gross realized gains recorded on sale of equity securities		296	282
Gross realized losses recorded on sale of equity securities		214	45
Reclassification from debt to equity investments	$ 286
Amortized cost of available for sale debt securities		15,581		19,662
Unrealized gains on available for sale debt securities		1,126		2,114
Unrealized losses on available for sale debt securities		0		10
Gross proceeds from sale of available for sale debt securities		1,963	2,782
Gross realized gains recorded on sale of debt securities		13	6
Gross realized losses recorded on sale of debt securities		0	$ 7
Mortgage note payable		6,980		7,171
Carrying Value
Fair Values of Assets and Liabilities
Mortgage note payable		7,355		8,360
High yield fund
Fair Values of Assets and Liabilities
Equity investments		2,866
Debt investments				2,977
International bond fund
Fair Values of Assets and Liabilities
Equity investments		2,786
Debt investments				2,680
Financial services industry
Fair Values of Assets and Liabilities
Equity investments		1,179		1,233
Healthcare
Fair Values of Assets and Liabilities
Equity investments		418		395
Technology
Fair Values of Assets and Liabilities
Equity investments		717		281
Other
Fair Values of Assets and Liabilities
Equity investments		3,953		4,500
Industrial bonds
Fair Values of Assets and Liabilities
Debt investments		956		1,180
Technology bonds
Fair Values of Assets and Liabilities
Debt investments		1,965		2,189
Government bonds
Fair Values of Assets and Liabilities
Debt investments		9,985		9,537
Energy bonds
Fair Values of Assets and Liabilities
Debt investments		646		625
Financial bonds
Fair Values of Assets and Liabilities
Debt investments		1,686		1,853
Other
Fair Values of Assets and Liabilities
Debt investments		1,469		725
Restricted debt securities
Fair Values of Assets and Liabilities
Debt investments		12,570		12,477
Quoted Prices in Active Markets for Identical Assets
Fair Values of Assets and Liabilities
Cash equivalents		25,330		27,456
Equity investments		6,267		6,409
Debt investments		9,985		9,537
Total investments		16,252		15,946
Total		41,582		43,402
Quoted Prices in Active Markets for Identical Assets | High yield fund
Fair Values of Assets and Liabilities
Equity investments		0
Debt investments				0
Quoted Prices in Active Markets for Identical Assets | International bond fund
Fair Values of Assets and Liabilities
Equity investments		0
Debt investments				0
Quoted Prices in Active Markets for Identical Assets | Financial services industry
Fair Values of Assets and Liabilities
Equity investments		1,179		1,233
Quoted Prices in Active Markets for Identical Assets | Healthcare
Fair Values of Assets and Liabilities
Equity investments		418		395
Quoted Prices in Active Markets for Identical Assets | Technology
Fair Values of Assets and Liabilities
Equity investments		717		281
Quoted Prices in Active Markets for Identical Assets | Other
Fair Values of Assets and Liabilities
Equity investments		3,953		4,500
Quoted Prices in Active Markets for Identical Assets | Industrial bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Quoted Prices in Active Markets for Identical Assets | Technology bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Quoted Prices in Active Markets for Identical Assets | Government bonds
Fair Values of Assets and Liabilities
Debt investments		9,985		9,537
Quoted Prices in Active Markets for Identical Assets | Energy bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Quoted Prices in Active Markets for Identical Assets | Financial bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Quoted Prices in Active Markets for Identical Assets | Other
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Other Observable Inputs
Fair Values of Assets and Liabilities
Cash equivalents		0		0
Equity investments		5,652		0
Debt investments		6,722		12,229
Total investments		12,374		12,229
Total		12,374		12,229
Significant Other Observable Inputs | High yield fund
Fair Values of Assets and Liabilities
Equity investments		2,866
Debt investments				2,977
Significant Other Observable Inputs | International bond fund
Fair Values of Assets and Liabilities
Equity investments		2,786
Debt investments				2,680
Significant Other Observable Inputs | Financial services industry
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Other Observable Inputs | Healthcare
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Other Observable Inputs | Technology
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Other Observable Inputs | Other
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Other Observable Inputs | Industrial bonds
Fair Values of Assets and Liabilities
Debt investments		956		1,180
Significant Other Observable Inputs | Technology bonds
Fair Values of Assets and Liabilities
Debt investments		1,965		2,189
Significant Other Observable Inputs | Government bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Other Observable Inputs | Energy bonds
Fair Values of Assets and Liabilities
Debt investments		646		625
Significant Other Observable Inputs | Financial bonds
Fair Values of Assets and Liabilities
Debt investments		1,686		1,853
Significant Other Observable Inputs | Other
Fair Values of Assets and Liabilities
Debt investments		1,469		725
Significant Unobservable Inputs
Fair Values of Assets and Liabilities
Cash equivalents		0		0
Equity investments		0		0
Debt investments		0		0
Total investments		0		0
Total		0		0
Significant Unobservable Inputs | Estimated Fair Value
Fair Values of Assets and Liabilities
Mortgage note payable		7,533		8,861
Significant Unobservable Inputs | High yield fund
Fair Values of Assets and Liabilities
Equity investments		0
Debt investments				0
Significant Unobservable Inputs | International bond fund
Fair Values of Assets and Liabilities
Equity investments		0
Debt investments				0
Significant Unobservable Inputs | Financial services industry
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Unobservable Inputs | Healthcare
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Unobservable Inputs | Technology
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Unobservable Inputs | Other
Fair Values of Assets and Liabilities
Equity investments		0		0
Significant Unobservable Inputs | Industrial bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Unobservable Inputs | Technology bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Unobservable Inputs | Government bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Unobservable Inputs | Energy bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Unobservable Inputs | Financial bonds
Fair Values of Assets and Liabilities
Debt investments		0		0
Significant Unobservable Inputs | Other
Fair Values of Assets and Liabilities
Debt investments		$ 0		$ 0

Fair Values of Assets and Lia_4

Fair Values of Assets and Liabilities - Debt Securities, Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Amortized Cost
Due in one year or less	$ 1,402
Due after one year through five years	8,407
Due after five years through ten years	5,772
Total	15,581	$ 19,662
Fair Value
Due in one year or less	1,417
Due after one year through five years	8,865
Due after five years through ten years	6,425
Total	$ 16,707	$ 21,766

Indebtedness - Debt Instruments

Indebtedness - Debt Instruments Summary (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020USD ($)communityagreement	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)living_unitcommunityagreement	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Indebtedness
Payment of deferred financing fees			$ 0	$ 1,271,000
Weighted average annual interest rate				4.99%
Letters of credit outstanding	$ 29,292,000		29,292,000
Mortgage Notes
Indebtedness
Interest expense and other associated costs incurred	$ 125,000	$ 131,000	$ 253,000	$ 265,000
Mortgage Notes | Senior Living Communities
Indebtedness
Number of real estate properties mortgaged | community	1		1
Revolving Credit Facility | Line of Credit
Indebtedness
Interest expense and other associated costs incurred	$ 275,000	775,000	$ 539,000	1,547,000
Standby Letters of Credit
Indebtedness
Number of irrevocable standby letters of credit agreements | agreement	7		7
Standby Letters of Credit | Workers' Compensation Insurance Program
Indebtedness
Letter of credit amount securing workers' compensation insurance program	$ 26,850,000		$ 26,850,000
Extension term			1 year
Standby Letters of Credit | Workers' Compensation Insurance Program | Cash Equivalents
Indebtedness
Collateral securing workers' compensation insurance program	21,543,000		$ 21,543,000
Standby Letters of Credit | Workers' Compensation Insurance Program | Debt and Equity Investments
Indebtedness
Collateral securing workers' compensation insurance program	$ 6,921,000		$ 6,921,000
Standby Letters of Credit | Certain of Our Other Obligations
Indebtedness
Number of irrevocable standby letters of credit agreements | agreement	6		6
Secured Revolving Credit Facility Maturing June 2021 | Revolving Credit Facility | Senior Living Communities
Indebtedness
Number of real estate properties securing borrowings on the new credit facility | community			11
Number of units in real estate properties securing borrowings on the new credit facility | living_unit			1,245
Secured Revolving Credit Facility Maturing June 2021 | Revolving Credit Facility | Line of Credit
Indebtedness
Maximum borrowing capacity		$ 65,000,000		$ 65,000,000
Extension term				1 year
Quarterly commitment fee on the unused part of borrowing availability			0.35%
Debt outstanding	$ 0		$ 0
Letters of credit outstanding	2,442,000		2,442,000
Available for borrowings	$ 51,804,000		$ 51,804,000
Secured Revolving Credit Facility Maturing June 2021 | Revolving Credit Facility | Line of Credit | LIBOR
Indebtedness
Variable rate			2.50%
Interest rate at period end	2.66%		2.66%
Secured Revolving Credit Facility Maturing June 2021 | Revolving Credit Facility | Line of Credit | Base Rate
Indebtedness
Variable rate			1.50%
Interest rate at period end	4.75%		4.75%
Prior Secured Revolving Credit Facility, Maturing June 2019 | Revolving Credit Facility | Line of Credit
Indebtedness
Payment of deferred financing fees					$ 1,271,000
DHC Credit Facility Due January1 2020 | Line of Credit | Transaction Agreement | Affiliated Entity
Indebtedness
Maximum borrowing capacity					$ 25,000

Indebtedness - Payments of Prin

Indebtedness - Payments of Principal and Interest (Details) - September 2032 $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)
Indebtedness
Unamortized discount and debt issuance costs	$ 241
Mortgage Notes
Indebtedness
Debt outstanding	$ 7,355
Contractual Stated Interest Rate	6.20%
Effective Interest Rate	6.70%
Monthly Payment	$ 72

Leases and Management Agreeme_2

Leases and Management Agreements with DHC - Narrative (Details)	Jan. 01, 2020USD ($)shares	Apr. 01, 2019USD ($)lease	Jun. 30, 2016USD ($)	Mar. 31, 2019USD ($)	Jun. 30, 2020USD ($)community	Jun. 30, 2019USD ($)property	Jun. 30, 2020USD ($)community	Jun. 30, 2019USD ($)property	Dec. 31, 2019USD ($)communityleaseterm	Jan. 01, 2019USD ($)
Leases
Additional consideration from share issuances					$ 23,453,000
Loss on termination of leases					$ 0	$ 0	$ 22,899,000	$ 0
Decrease in working capital liabilities							$ (51,547,000)
Percentage of fees related to the new management agreement					15.00%		15.00%
Incentive management fee maximum					1.50%		1.50%
Related party transaction costs					$ 175,000	1,133,000	$ 1,270,000	8,808,000
Due to related persons							(1,655,000)	(524,000)
Cumulative effect in connection with the adoption of FASB ASU	$ (1,694,000)									$ 67,473,000
Revenues form senior living communities					286,583,000	355,739,000	584,028,000	711,262,000
SNH
Leases
Number of communities managed | community									78
Sale from leaseback transaction			$ 82,644,000
SNH | Management Fee Revenue
Leases
Revenues form senior living communities					$ 15,135,000	3,802,000	$ 31,597,000	7,521,000
SNH | Improvements to Communities
Leases
Leasehold improvements sold to lessor						56,342,000		78,920,000
SNH | Transaction Agreement
Leases
Number of master leases | lease									5
Number of properties managed | community					241		241
Monthly minimum rent		$ 11,000,000
Management fee as a percent of gross revenues									5.00%
Percentage of fees related to the new management agreement									15.00%
Incentive management fee maximum									1.50%
Management fee, number of renewal terms | term									2
Management fee renewal term									5 years
Percentage, target EBITDA threshold									90.00%
EBITDA threshold, consecutive measurement period									2 years
EBITDA threshold, measurement period | term									2
EBITDA threshold, consecutive measurement period									3 years
Related party transaction, management fee, termination threshold, percentage									20.00%
Related party transaction rent As percentage of gross revenue									4.00%
Lease expense						32,490,000		86,272,000
Percentage rent - 840						0		1,547,000
Decrease in rent payable to SNH				$ 13,840,000
Due to related persons				$ 13,840,000
Outstanding rent due and payable to SNH									$ 0
SNH | Transaction Agreement | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Leases
Property and equipment related to the carrying value of senior living communities		$ 49,155,000
SNH | Transaction Agreement | Shares Issued
Leases
Additional consideration from share issuances	$ 75,000,000
Excess fair value of shares issued					$ 97,899,000		$ 97,899,000
SNH | Transaction Agreement | Shares Issued | Diversified Healthcare Trust
Leases
Number of shares sold (in shares) | shares	10,268,158
SNH | Transaction Agreement | Shares Issued | Diversified Healthcare Trust Shareholders
Leases
Number of shares sold (in shares) | shares	16,118,849
SNH | Other Services Provided to Residents at Managed Communities
Leases
Rehabilitation service revenue					5,814,000	$ 1,513,000	13,871,000	$ 3,188,000
SNH | Senior Living Communities
Leases
Number of properties managed | property						77		77
SNH | Senior Living Communities | Management Fee Revenue
Leases
Revenues form senior living communities					444,000	$ 153,000	906,000	$ 346,000
SNH | Senior Living Communities | Management Fee Revenue | D&R Yonkers LLC
Leases
Revenues form senior living communities					126,000	$ 69,000	253,000	$ 140,000
SNH | Senior Living Communities | Transaction Agreement
Leases
Number of properties leased and operated | community									166
Number of master leases | lease		5
DHC | Senior Living Communities
Leases
Lease expense					$ 488,000		$ 782,000
Accumulated Deficit
Leases
Cumulative effect in connection with the adoption of FASB ASU	$ 1,694,000									$ 67,473,000
Minimum
Leases
Consumer price index percentage							2.00%
Maximum
Leases
Consumer price index percentage							6.00%

Business Management Agreement_2

Business Management Agreement with RMR LLC - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Reit Management And Research LLC
Business Management Agreement [Line Items]
Business management fees and costs	$ 2,123	$ 2,409	$ 4,474	$ 4,774

Related Person Transactions (De

Related Person Transactions (Details) $ in Thousands	1 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)companyshares	Jan. 31, 2020USD ($)	Jun. 30, 2019USD ($)	Jan. 31, 2019USD ($)	Jun. 30, 2020USD ($)companyshares	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)companyshares	Jun. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Related Party Transaction [Line Items]
Equity investment of an investee	$ 11				$ 11		$ 11		$ 298
Equity in earnings of an investee					0	$ 130	0	$ 534
Severance, Cash Payment | Chief Executive Officer
Related Party Transaction [Line Items]
Cash payments for severance				$ 600
Severance, Cash Payment | Senior Vice President
Related Party Transaction [Line Items]
Cash payments for severance				$ 510
Severance, Cash Payment | Chief Executive Officer And Chief Financial Officer
Related Party Transaction [Line Items]
Cash payments for severance		$ 260	$ 260
Employee Severance, Transition Payments | Chief Executive Officer
Related Party Transaction [Line Items]
Cash payments for severance						136		268
Employee Severance, Transition Payments | Chief Executive Officer And Chief Financial Officer
Related Party Transaction [Line Items]
Cash payments for severance						7		7
AIC
Related Party Transaction [Line Items]
Equity investment of an investee	11				$ 11		$ 11		$ 298
Proceeds from equity method dissolution	$ 287
AIC | Affiliated Entity
Related Party Transaction [Line Items]
Number of companies in related party entity | company	4				4		4
SNH | Affiliated Entity
Related Party Transaction [Line Items]
Number of shares owned (in shares) | shares	10,691,658				10,691,658		10,691,658
Percentage of outstanding common shares owned	33.90%				33.90%		33.90%
ABP Trust | Affiliated Entity
Related Party Transaction [Line Items]
Number of shares owned (in shares) | shares	1,972,783				1,972,783		1,972,783
Percentage of outstanding common shares owned	6.20%				6.20%		6.20%
Rent expense					$ 424	451	$ 859	971
Incremental borrowing rate	4.40%				4.40%		4.40%
ABP Trust | Headquarters | Affiliated Entity
Related Party Transaction [Line Items]
Lease liability	$ 982		$ 1,901		$ 982	$ 1,901	$ 982	$ 1,901

Legal Proceedings and Claims (D

Legal Proceedings and Claims (Details) - USD ($)	Jul. 10, 2020	Jun. 30, 2020
Office of the Inspector General
Loss Contingencies [Line Items]
Estimated minimum loss		$ 0
Subsequent Event | Lefevre v. Five Star Quality Care, Inc.
Loss Contingencies [Line Items]
Litigation settlement expense	$ 2,473,000

Covid-19 Pandemic - Narrative (

Covid-19 Pandemic - Narrative (Details) - USD ($) $ in Thousands	May 22, 2020	Apr. 10, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Unusual or Infrequent Item, or Both [Line Items]
Revenues			$ 286,583	$ 355,739	$ 584,028	$ 711,262
Accrued expenses and other current liabilities			49,525		49,525		$ 55,981
COVID-19
Unusual or Infrequent Item, or Both [Line Items]
Proceeds from CARES act	$ 4,715	$ 1,720
Other operating income			1,499
Accrued expenses and other current liabilities			221		221
Deferred payroll taxes			8,784		8,784
Payment of deferred taxes					7,055
AMT amount			$ 554		554
Payments for protective equipment					$ 8,118