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9. CAPITAL LEASE OBLIGATIONS (Details Narrative) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Capital Lease Obligations Details Narrative
Interest expense from capital lease obligations	$ 202,656us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease	$ 207,393us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease

X

- Details

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Namespace Prefix:	gure_
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X

- Definition

The amount, during the lease term, of each minimum [capital] lease payment allocated to interest expense so as to produce a constant periodic rate of interest on the remaining balance of the capital lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 35

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6916424&loc=d3e43161-112731

+ Details

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Period Type:	duration