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Condensed Financial Information of DHT Holdings, Inc. - Profit(loss) reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Profitloss Reconciliation [Abstract] |  |
Profit/(loss) of the parent company only under cost method off accounting | $ (86,143) | $ 20,293
Additional profit/(loss) if subsidiaries had been accounted for using equity method of accounting as opposed to cost method of accounting | 39,014 | (13,664)
Profit/(loss) of the parent company only under equity method of accounting | $ (47,128) | $ 6,628

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- Definition Additional profit/(loss) if subsidiaries had been accounted for using equity method of accounting as opposed to cost method of accounting. + References No definition available. + Details
Name: | dht_AdditionalProfitlossIfSubsidiariesHadBeenAccountedForUsingEquityMethodOfAccountingAsOpposedToCostMethodOfAccounting
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The (loss)/profit of the parent company only under cost method of accounting. + References No definition available. + Details
Name: | dht_LossprofitOfTheParentCompanyOnlyUnderCostMethodOfAccounting
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The profit/(loss) of the parent company only under equity method of accounting. + References No definition available. + Details
Name: | dht_ProfitlossOfTheParentCompanyOnlyUnderEquityMethodOfAccounting
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Reconciliation of profit/(loss). + References No definition available. + Details
Name: | dht_ProfitlossReconciliationAbstract
Namespace Prefix: | dht_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration