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FINANCE LEASE RIGHT-OF-USE ASSETS (Details Narrative) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Finance Lease Right-of-use Assets
Depreciation and amortization expense	$ 1,353	$ 1,459

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- Definition

Depreciation and amortization expense.

+ References

No definition available.

+ Details

Name:	gure_DepreciationAndAmortizationExpensePPE
Namespace Prefix:	gure_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	gure_DisclosureFinanceLeaseRightofuseAssetsAbstract
Namespace Prefix:	gure_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration