Bank loan (Details Narrative) - Secured Revolving Credit Facility [Member] - USD ($) $ in Thousands	Sep. 14, 2022	Jan. 24, 2022
Disclosure of detailed information about borrowings [line items]
Bank loan availed		$ 10,000
Additional bank loan available		$ 15,000
Standby fee on undrawn portion of bank loan		0.90%
Bank loan maturity date	Mar. 31, 2025	Mar. 31, 2023
Base Rate [Member]
Disclosure of detailed information about borrowings [line items]
Bank loan interest rate margin		3.00%
SOFR Rate [Member]
Disclosure of detailed information about borrowings [line items]
Bank loan interest rate margin		4.00%

Additional secured bank loans to be available.

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Borrowings maturity date.

+ References

No definition available.

+ Details

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- Definition

Standby fee on undrawn portion of bank loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	groy_
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Period Type:	duration

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard
-URIDate 2021-03-24

+ Details

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- 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

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- Definition

The amount of loans received from banks that have been secured by collateral. [Refer: Loans received]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2021-03-24

+ Details

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- Details

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- Details

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- Details

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