10. LEASE LIABILITIES-FINANCE AND OPERATING LEASE (Details 1)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Leases [Abstract]
Imputed interest rate on operating lease liabilities	.0489	.0489
Total operating lease liabilities	$ 8,174,965	$ 8,499,692
Less: current portion	(317,544)	(477,350)
Operating lease liabilities, net of current portion	$ 7,857,421	$ 8,022,342

No definition available.

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Namespace Prefix:	GURE_
Data Type:	xbrli:pureItemType
Balance Type:	na
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- References

No definition available.

+ Details

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

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

+ Details

Name:	us-gaap_OperatingLeaseLiability
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Balance Type:	credit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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