XML 40 R30.htm IDEA: XBRL DOCUMENT v3.22.1

Real Estate Investments - Equity Investment In Joint Venture (Details) $ in Thousands	Mar. 31, 2022 USD ($) ft² property	Dec. 31, 2021 USD ($)	Mar. 31, 2017
Real Estate
Investments in unconsolidated joint ventures | $	$ 266,741	$ 215,127
Number of properties (property) | property	378
Corporate Joint Venture
Real Estate
Investments in unconsolidated joint ventures | $	$ 266,741
Number of properties (property) | property	11
Area of real estate property | ft²	2,203,242
Seaport Innovation LLC | Corporate Joint Venture
Real Estate
Equity method investment ownership percentage	20.00%	20.00%	55.00%
Investments in unconsolidated joint ventures | $	$ 216,416
Number of properties (property) | property	1
Area of real estate property | ft²	1,134,479
The LSMD Fund REIT LLC | Corporate Joint Venture
Real Estate
Equity method investment ownership percentage	20.00%
Investments in unconsolidated joint ventures | $	$ 50,325
Number of properties (property) | property	10
Area of real estate property | 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ 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

No definition available.

+ 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: