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Condensed Financial Information of DHT Holdings, Inc. (parent company only), Equity Reconciliation (Details) - Parent Company [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Equity Reconciliation [Abstract] |  |  |
Equity of the parent company only under cost method of accounting | $ 962,796 | $ 939,154 |
Additional profit if subsidiaries had been accounted for using equity method of accounting as opposed to cost method of accounting | 69,731 | 22,762 |
Equity of the parent company only under equity method of accounting | 1,032,527 | 961,915 |
Dividend income from subsidiaries | $ 25,007 | $ 9,500 | $ 25,000

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- Definition Amount of additional equity, profit loss of any subsidiaries had been accounted for using equity method of accounting as opposed to cost method of accounting. + References No definition available. + Details
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Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of dividends recognised as income from subsidiaries. + References No definition available. + Details
Name: | dht_DividendIncomeFromSubsidiaries
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities under cost method of accounting. + References No definition available. + Details
Name: | dht_EquityUnderCostMethodOfAccounting
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities under equity method of accounting. + References No definition available. + Details
Name: | dht_EquityUnderEquityMethodOfAccounting
Namespace Prefix: | dht_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Data Type: | na
Balance Type: |
Period Type: |