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COMMITMENTS AND CONTINGENCIES (Details Narrative) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Game software development agreements |  |
Purchase commitments | $ 8,309,706 | $ 7,772,140

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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_TypeOfArrangementAxis=bhat_GameSoftwareDevelopmentAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |