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Investment in associate company and business combination, Cash Flow on Acquisition (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash flow on acquisition [Abstract] |  |  |  |
Net cash acquired with the subsidiary | $ 8,660 |  |  |
Cash paid | (394) |  |  |
NET CASH FLOW ON ACQUISITION | $ 8,267 | $ 8,267 | $ 0 | $ 0

X
- Definition The cash outflow for the acquisition of subsidiary, classified as investing activities. + References No definition available. + Details
Name: | dht_AcquisitionOfSubsidiaryNetOfCashPaid
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The cash inflow associated with the acquisition of a business when the cash held by the acquired business exceeds the cash payments to acquire the business. + References No definition available. + Details
Name: | dht_CashAcquiredInExcessOfPaymentsToAcquireBusinesses
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | dht_CashFlowOnAcquisitionAbstract
Namespace Prefix: | dht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of a business. + References No definition available. + Details
Name: | dht_PaymentsToAcquireBusiness
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration