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SUPPLEMENTAL BALANCE SHEET DISCLOSURES - Deferred revenue (Details) - HTC - Exclusivity Agreement $ in Thousands	Mar. 03, 2023 CAD ($) item
Deferred Revenue
Value of exclusivity right granted | $	$ 273
Number of additional terms | item	1
Additional term	5 years
Period for written notice for renewal	60 days

X

- Definition

The value of the exclusivity right granted.

+ References

No definition available.

+ Details

Name:	hsdt_ExclusivityRightGrantedValue
Namespace Prefix:	hsdt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the additional term of exclusivity rights.

+ References

No definition available.

+ Details

Name:	hsdt_ExclusivityRightsAdditionalTerm
Namespace Prefix:	hsdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of additional terms.

+ References

No definition available.

+ Details

Name:	hsdt_ExclusivityRightsNumberOfAdditionalTerms
Namespace Prefix:	hsdt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the period of written notice for renewal.

+ References

No definition available.

+ Details

Name:	hsdt_ExclusivityRightsPeriodOfWrittenNoticeForRenewal
Namespace Prefix:	hsdt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DeferredRevenueAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CounterpartyNameAxis=hsdt_HealthTechConnexIncorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=hsdt_ExclusiveDistributionAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: