The amount of intellectual property payment due upon achievement of developmental milestones.

No definition available.

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Namespace Prefix:	hrmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount payable upon achievement of research milestone for each candidate in addition to the upfront fee under the license agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Aggregate amount payable upon exercise of exclusive license option for candidates under a license agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	hrmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period from the effective date, the Company is required to put the deposit into an escrow account for the pending licensed patents, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	hrmy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount payable upon exercise of exclusive license option for each developmental candidate under a license agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	hrmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of developmental candidates in a collaborative and license agreement entered for research and development purpose.

+ References

No definition available.

+ Details

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Namespace Prefix:	hrmy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of milestone payments due upon approval of the pending licensed patents.

+ References

No definition available.

+ Details

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Namespace Prefix:	hrmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents information pertaining to license agreement upfront fees paid.

+ References

No definition available.

+ Details

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Namespace Prefix:	hrmy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent License and asset purchase agreements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for royalties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-6

+ Details

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

- Details

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Namespace Prefix:
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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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- Details

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LICENSE AGREEMENTS AND ASSET PURCHASE AGREEMENTS - CiRC, Novitium and MSN Agreements (Details) $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Feb. 28, 2026 USD ($)	Jan. 31, 2026 USD ($)	Jun. 30, 2025 USD ($) item	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
License Agreements and Asset Purchase Agreements
Cost of product sold				$ 63,198	$ 38,153	$ 107,710	$ 70,147
Accrued sales-based trademark and tired royalties				60,775		60,775		$ 65,819
CiRC \| Related party
License Agreements and Asset Purchase Agreements
Number of developmental candidates \| item			2
Payment of upfront license fee			$ 15,000
Additional milestone payments due upon achievement of research milestones			2,000		2,000		2,000
Exercise fee payable upon exercise of each option			8,000		8,000		8,000
Aggregate exercise fee payable upon exercise			$ 16,000		16,000		16,000
Novitium
License Agreements and Asset Purchase Agreements
Payment of upfront license fee		$ 15,000
Payment for intellectual property upon developmental milestones		$ 10,000
MSN
License Agreements and Asset Purchase Agreements
Payment of upfront license fee	$ 17,000
Payments due upon approval of pending licensed patents	$ 25,000
Term of deposit into an escrow account (in months)	9 months
MSN \| Sales-based, trademark and tiered royalties
License Agreements and Asset Purchase Agreements
Cost of product sold				60,775	$ 35,783	102,681	$ 65,340
Accrued sales-based trademark and tired royalties				$ 60,775		$ 60,775		$ 65,819