XML 54 R43.htm IDEA: XBRL DOCUMENT v3.24.3

COMMITMENTS AND CONTINGENCIES - License agreement (Details) - Advanced NeuroRehabilitation, LLC - License Agreement for Exclusive Right on Patent Pending Technology - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
COMMITMENTS AND CONTINGENCIES
Percentage of royalty on net revenue			4.00%
Royalty expense	$ 1	$ 5	$ 13	$ 19

X

- Definition

Commitments and contingencies.

+ References

No definition available.

+ Details

Name:	hsdt_CommitmentsAndContingenciesLineItems
Namespace Prefix:	hsdt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of royalty on net revenue.

+ References

No definition available.

+ Details

Name:	hsdt_PercentageOfRoyaltyOnNetRevenue
Namespace Prefix:	hsdt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_RoyaltyExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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

X

- Details

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