Cash Flows Used In Obtaining Control Of Subsidiaries Or Other Businesses, Contingent Consideration

No definition available.

Name:	gamb_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesContingentConsideration
Namespace Prefix:	gamb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash Flows Used In Obtaining Control Of Subsidiaries Or Other Businesses, Deferred Consideration

+ References

No definition available.

+ Details

Name:	gamb_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesDeferredConsideration
Namespace Prefix:	gamb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Share Payments For Acquisitions

+ References

No definition available.

+ Details

Name:	gamb_IssueOfOrdinarySharesForAcquisitions
Namespace Prefix:	gamb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of segment.

+ References

No definition available.

+ Details

Name:	gamb_NumberOfSegment
Namespace Prefix:	gamb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-Based Payment Arrangement, Award Vesting Period

+ References

No definition available.

+ Details

Name:	gamb_ShareBasedPaymentArrangementAwardVestingPeriod
Namespace Prefix:	gamb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Summary of significant accounting policies.

+ References

No definition available.

+ Details

Name:	gamb_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix:	gamb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Vesting Percentage, Share-Based Payment Arrangement

+ References

No definition available.

+ Details

Name:	gamb_VestingPercentageShareBasedPaymentArrangement
Namespace Prefix:	gamb_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Vesting Requirements For Share-Based Payment Arrangement, Restricted Period

+ References

No definition available.

+ Details

Name:	gamb_VestingRequirementsForShareBasedPaymentArrangementRestrictedPeriod
Namespace Prefix:	gamb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount, at acquisition date, of contingent consideration arrangements recognised as consideration transferred in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph B64
-Subparagraph g
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_g_i&doctype=Appendix&subtype=B
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 35
-Subparagraph f
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_f_i&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 35
-Subparagraph f
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_f_i&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ContingentConsiderationRecognisedAsOfAcquisitionDate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The description of a cash-generating unit (such as whether it is a product line, a plant, a business operation, a geographical area or a reportable segment as defined in IFRS 8). [Refer: Total for all cash-generating units [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2025-01-01
-Paragraph 130
-Subparagraph d
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2025-en-r&anchor=para_130_d_i&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 252
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_252_a&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 252
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_252_a&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_DescriptionOfCashgeneratingUnit
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2025-01-01
-Paragraph B64
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 35
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_c&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 35
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_c&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The useful life, measured as period of time, used for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2025-01-01
-Paragraph 118
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_a&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 263
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_a&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 263
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_a&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2025-01-01
-Paragraph C12
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2025-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_WeightedAverageLesseesIncrementalBorrowingRateAppliedToLeaseLiabilitiesRecognisedAtDateOfInitialApplicationOfIFRS16
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_GeographicalAreasAxis=srt_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_TitleOfIndividualAxis=gamb_NonExecutiveDirectorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=ifrs-full_RestrictedShareUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BusinessCombinationsAxis=gamb_NDCMediaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BusinessCombinationsAxis=gamb_RotoSportsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=ifrs-full_CapitalisedDevelopmentExpenditureMember
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:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=gamb_CustomerContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=gamb_CustomerBaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=gamb_ContentAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=ifrs-full_ComputerSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SUMMARY OF MATERIAL ACCOUNTING POLICIES - Narrative (Details) € in Thousands, $ in Thousands	1 Months Ended			12 Months Ended
	Apr. 30, 2024 USD ($)	Apr. 30, 2024 EUR (€)	Apr. 30, 2023 USD ($)	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022	Jan. 31, 2022
Summary Of Significant Accounting Policies [Line Items]
Description of cash-generating unit				four
Issue of ordinary shares for acquisitions				$ 9,971	$ 0	$ 9,912
Incremental borrowing rate				6.00%		6.00%
Number of segments \| segment				1
United States
Summary Of Significant Accounting Policies [Line Items]
Incremental borrowing rate				6.00%
Europe
Summary Of Significant Accounting Policies [Line Items]
Incremental borrowing rate				4.00%
Non-executive Directors
Summary Of Significant Accounting Policies [Line Items]
Restricted period				1 year
RSU expense
Summary Of Significant Accounting Policies [Line Items]
Vesting percentage, share-based payments				25.00%
Vesting period, share-based payments				4 years
NDC Media
Summary Of Significant Accounting Policies [Line Items]
Percentage of voting equity interests acquired							100.00%	100.00%
Contingent consideration, at fair value			$ 20,090
Contingent consideration			10,178
Issue of ordinary shares for acquisitions			$ 9,912
Total	$ 13,582	€ 12,699		$ 0	0	$ 10,178
Roto Sports, Inc.
Summary Of Significant Accounting Policies [Line Items]
Percentage of voting equity interests acquired							100.00%	100.00%
Total				$ 300	$ 5,000	$ 2,500
Capitalised development expenditure \| Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				1 year
Capitalised development expenditure \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				5 years
Customer Contracts \| Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				1 year
Customer Contracts \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				2 years
Customer Base \| Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				5 years
Customer Base \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				16 years
CONTENT ASSETS
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				1 year
Software \| Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				5 years
Software \| Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible asset, estimated useful life				8 years