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Employee Benefits (Details)		9 Months Ended
	Apr. 23, 2021	Sep. 30, 2025
Employee Benefits
Defined contribution plan maximum percentage amount of the employee's gross pay that the employee can contribute		90.00%
Percentage of statutory profit sharing payable	10.00%

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- Definition

Defined contribution plan maximum percentage amount of the employee's gross pay that the employee can contribute

+ References

No definition available.

+ Details

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Namespace Prefix:	goro_
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Balance Type:	na
Period Type:	duration

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- Definition

Percentage of statutory profit sharing payable.

+ References

No definition available.

+ Details

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Namespace Prefix:	goro_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration