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v3.23.2

INVENTORIES (Details Narrative) - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Inventory Disclosure [Abstract] |  |
Impairment charges for slow moving inventory | $ 0 | $ 0

X
- Definition The amount of impairment charges for slow moving inventory. + References No definition available. + Details
Name: | gure_ImpairmentChargesSlowMovingInventory
Namespace Prefix: | gure_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InventoryDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration