XML 83 R63.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Business and Property Management Agreements with RMR-Schedule of Business Management Fees, Property Management Fees and Construction Supervision Fees Recognized (Details) - RMR LLC - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Pursuant to business management agreement: |  |  |
Business management fees | $ 16,468 | $ 13,965 | $ 16,646
Pursuant to property management agreement |  |  |
Property management fees | 5,683 | 5,686 | 5,657
Construction supervision fees | 2,005 | 3,200 | 4,672
Total property management and construction supervision fees | 7,688 | 8,886 | 10,329
Expense Reimbursement: |  |  |
Property level expenses | 15,023 | 14,587 | 12,901
Recognized amortization of the liability | 2,974 | 2,974 | 2,974
Amortization of liability related to property management and construction supervision fees | 797 | 797 | 797
General and administrative expenses |  |  |
Expense Reimbursement: |  |  |
Property level expenses | 304 | 288 | 243
Property operating expenses |  |  |
Expense Reimbursement: |  |  |
Property level expenses | $ 14,719 | $ 14,299 | $ 12,658

X
- Definition Amortization Of Liability Related To Property Management And Construction Supervision Fees + References No definition available. + Details
Name: | dhc_AmortizationOfLiabilityRelatedToPropertyManagementAndConstructionSupervisionFees
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the business management fees incurred pursuant to business management agreement with related parties. + References No definition available. + Details
Name: | dhc_BusinessManagementFees
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Construction Supervision Fees + References No definition available. + Details
Name: | dhc_ConstructionSupervisionFees
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expense Reimbursement + References No definition available. + Details
Name: | dhc_ExpenseReimbursementAbstract
Namespace Prefix: | dhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Property Management And Construction Supervision Fees, Net + References No definition available. + Details
Name: | dhc_PropertyManagementAndConstructionSupervisionFeesNet
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Property Management Fees + References No definition available. + Details
Name: | dhc_PropertyManagementFees
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Pursuant To Business Management Agreement + References No definition available. + Details
Name: | dhc_PursuantToBusinessManagementAgreementAbstract
Namespace Prefix: | dhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Pursuant To Property Management Agreement + References No definition available. + Details
Name: | dhc_PursuantToPropertyManagementAgreementAbstract
Namespace Prefix: | dhc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of amortization of the liability recorded during the period. + References No definition available. + Details
Name: | dhc_TransactionAmortizationOfLiability
Namespace Prefix: | dhc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Subparagraph (k) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-3 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
Name: | us-gaap_ProfessionalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_CounterpartyNameAxis=dhc_ReitManagementAndResearchLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OperatingExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |