XML 72 R52.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Real Estate Investments -Equity Method Investments in Unconsolidated Joint Ventures (Details) $ in Thousands | Dec. 31, 2024 USD ($) ft² property | Dec. 31, 2023 USD ($) | Jun. 30, 2022
--- | --- | --- | ---
Real Estate |  |  |
DHC Carrying Value of Investment | $ | $ 126,859 | $ 129,916 |
Number of Properties | property | 367 |  |
Corporate Joint Venture |  |  |
Real Estate |  |  |
DHC Carrying Value of Investment | $ | $ 126,859 |  |
Number of Properties | property | 11 |  |
Area of real estate properties (in square feet) | ft² | 2,203,242 |  |
Seaport Innovation LLC | Corporate Joint Venture |  |  |
Real Estate |  |  |
DHC Ownership | 10.00% |  | 20.00%
DHC Carrying Value of Investment | $ | $ 81,949 |  |
Number of Properties | property | 1 |  |
Area of real estate properties (in square feet) | ft² | 1,134,479 |  |
The LSMD Fund REIT LLC | Corporate Joint Venture |  |  |
Real Estate |  |  |
DHC Ownership | 20.00% |  |
DHC Carrying Value of Investment | $ | $ 44,910 |  |
Number of Properties | property | 10 |  |
Area of real estate properties (in square feet) | ft² | 1,068,763 |  |

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 976 -SubTopic 310 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477332/976-310-50-1 + Details
Name: | us-gaap_RealEstateLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=dhc_SeaportInnovationLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=dhc_TheLSMDFundREITLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |