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v3.21.2

Summary of Significant Accounting Policies - Summary Of Depreciation Of Property Plant Equipment (Detail) | Dec. 31, 2020
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Computers [Member] |
Schedule Of Depreciation Of Property Plant Equipment [Line Items] |
Property plant and equipment annual depreciated amount | 33.00%
Electronic equipment [Member] |
Schedule Of Depreciation Of Property Plant Equipment [Line Items] |
Property plant and equipment annual depreciated amount | 15.00%

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- Definition Property plant and equipment annual depreciated amount. + References No definition available. + Details
Name: | heccu_PropertyPlantAndEquipmentAnnualDepreciatedAmount
Namespace Prefix: | heccu_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Schedule of depreciation of property plant equipment. + References No definition available. + Details
Name: | heccu_ScheduleOfDepreciationOfPropertyPlantEquipmentLineItems
Namespace Prefix: | heccu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=heccu_ElectronicEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |