Discount for Purchase of Ordinary Shares Under Employee Share Purchase Plan

No definition available.

Name:	gamb_DiscountForPurchaseOfOrdinarySharesUnderEmployeeSharePurchasePlan
Namespace Prefix:	gamb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Increase In Number Of Ordinary Shares Issued, Other Share Issuances

+ References

No definition available.

+ Details

Name:	gamb_IncreaseInNumberOfOrdinarySharesIssuedOtherShareIssuances
Namespace Prefix:	gamb_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum Limitation Percentage For Employees Voting Power

+ References

No definition available.

+ Details

Name:	gamb_MaximumLimitationPercentageForEmployeesVotingPower
Namespace Prefix:	gamb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum Shares Purchase For Employees

+ References

No definition available.

+ Details

Name:	gamb_MaximumSharesPurchaseForEmployees
Namespace Prefix:	gamb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Purchase Of Treasury Shares, Average Price Per Share

+ References

No definition available.

+ Details

Name:	gamb_PurchaseOfTreasurySharesAveragePricePerShare
Namespace Prefix:	gamb_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Share Repurchase Program, Amount Available

+ References

No definition available.

+ Details

Name:	gamb_ShareRepurchaseProgramAmountAvailable
Namespace Prefix:	gamb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Share Repurchase Program, Cumulative Authorized, Amount

+ References

No definition available.

+ Details

Name:	gamb_ShareRepurchaseProgramCumulativeAuthorizedAmount
Namespace Prefix:	gamb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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

- Definition

The increase (decrease) in the number of ordinary shares issued. [Refer: Ordinary shares [member]]

+ 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_IncreaseDecreaseInNumberOfOrdinarySharesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from the issuing of ordinary shares. [Refer: Ordinary shares [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ProceedsFromIssueOfOrdinaryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The decrease in equity resulting from the purchase of treasury shares. [Refer: Treasury shares]

+ 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 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_106_d&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_PurchaseOfTreasuryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

No definition available.

+ Details

Name:	srt_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

No definition available.

+ Details

Name:	srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	srt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	ifrs-full_ComponentsOfEquityAxis=ifrs-full_TreasurySharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=ifrs-full_PotentialOrdinaryShareTransactionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SHARE CAPITAL - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended		50 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Dec. 31, 2025	Aug. 31, 2025	Nov. 30, 2024	Aug. 31, 2024	May 31, 2024	Nov. 30, 2022	May 31, 2022
Disclosure Of Classes Of Share Capital [Line Items]
Share repurchase program, authorized ( in shares)	0		0	0						30,000,000.0
Share repurchase program, authorized, amount					$ 10,000	$ 10,000	$ 10,000	$ 10,000	$ 10,000
Share repurchase program, cumulative authorized, amount	$ 50,000		$ 50,000
Treasury stock acquired, average cost per share (in usd per share)			$ 8.98
Treasury shares acquired			$ 35,576
Discount for purchase of ordinary shares under employee share purchase plan	15.00%
Maximum shares purchase for employees	50.00%		50.00%
Maximum limitation percentage for employees voting power	5.00%		5.00%
Issue of ordinary shares in relation to employee stock purchase plan (in shares)	56,473	13,448
Issue of ordinary shares in relation to employee stock purchase plan	$ 183	$ 0
Treasury Shares
Disclosure Of Classes Of Share Capital [Line Items]
Issue of ordinary shares (in shares)			3,960,663
Potential ordinary share transactions
Disclosure Of Classes Of Share Capital [Line Items]
Share repurchase program, amount available	$ 14,424		$ 14,424