Amount of costs incurrent in offering.

No definition available.

Name:	blrx_CostsIncurrentInOffering
Namespace Prefix:	blrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gross proceeds from offering.

+ References

No definition available.

+ Details

Name:	blrx_GrossProceedsFromOffering
Namespace Prefix:	blrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	blrx_LicenseAndSecuritiesPurchaseAgreementsLineItems
Namespace Prefix:	blrx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of royalties receivable from aggregate net sales.

+ References

No definition available.

+ Details

Name:	blrx_PercentageOfRoyaltiesReceivableFromAggregateNetSales
Namespace Prefix:	blrx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of upfront payment.

+ References

No definition available.

+ Details

Name:	blrx_UpfrontPayment
Namespace Prefix:	blrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Total for all subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
-Paragraph 40
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_40_a&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ConsiderationPaidReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_LicenceFeeIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

+ Details

Name:	ifrs-full_RevenueFromRoyalties
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	blrx_AgreementTypeAxis=blrx_AyrmidLicenseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	blrx_PerformanceObligationAxis=blrx_SingleMaterialPerformanceObligationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	blrx_AgreementTypeAxis=blrx_HighbridgeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	blrx_AgreementTypeAxis=blrx_RegisteredDirectOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LICENSE AND SECURITIES PURCHASE AGREEMENTS - AYRMID/HIGHBRIDGE (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2024	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
License And Securities Purchase Agreements [Line Items]
Consideration received	$ 19,000
License revenues			$ 1,180	$ 22,917	$ 4,610
Ayrmid License Agreement [Member]
License And Securities Purchase Agreements [Line Items]
Upfront Payment	10,000
Consideration received	7,800
License revenues		$ 7,800
Total royalties based on motixafortide net sales			$ 1,200
Ayrmid License Agreement [Member] \| Single Material Performance Obligation [Member]
License And Securities Purchase Agreements [Line Items]
Consideration received	7,800
Highbridge [Member]
License And Securities Purchase Agreements [Line Items]
Gross proceeds from offering	9,000
Registered Direct Offering [Member]
License And Securities Purchase Agreements [Line Items]
Consideration received	11,200
Costs incurrent in offering	$ 100
Bottom of range [member] \| Ayrmid License Agreement [Member]
License And Securities Purchase Agreements [Line Items]
Percentage of royalties receivable from aggregate net sales	18.00%
Top of range [member] \| Ayrmid License Agreement [Member]
License And Securities Purchase Agreements [Line Items]
Upfront Payment	$ 87,000
Percentage of royalties receivable from aggregate net sales	23.00%