Custom Element.

No definition available.

Name:	gure_StockIssuedDuringPeriodSharesOtherNumberOfSharesIssued
Namespace Prefix:	gure_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Custom Element.

+ References

No definition available.

+ Details

Name:	gure_StockIssuedDuringPeriodSharesStockOptionsExercisedNumberOfSharesIssued
Namespace Prefix:	gure_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Transfer To Retained Earnings Appropriated For Legal Reserve

+ References

No definition available.

+ Details

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

- Definition

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 35

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-Name Accounting Standards Codification

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

Name:	us-gaap_CommonStockSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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

-Publisher FASB

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Other Comprehensive Income

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-Glossary Net Income

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-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.19)

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-Name Regulation S-X (SX)

-Number 210

-Section 04

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+ Details

Name:	us-gaap_NetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (a)

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-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section 45

-Paragraph 20

-Subparagraph (b,c)

-URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32211-110900

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

+ Details

Name:	us-gaap_SharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

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-Topic 310

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-Paragraph 2

-Subparagraph (SAB TOPIC 4.E)

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section E

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

-Article 5

+ Details

Name:	us-gaap_StockholdersEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Value of stock issued as a result of the exercise of stock options.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Topic 505

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

-Article 5

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

+ Details

Name:	us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

+ Details

Name:	us-gaap_StockRepurchasedDuringPeriodValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained earnings appropriated	Retained earnings unappropriated	Cumulative Translation Adjustment	Total
Balance at Dec. 31, 2012	$ 19,276	$ (500,000)	$ 79,489,188	$ 15,973,887	$ 146,745,754	$ 22,496,279	$ 264,224,384us-gaap_StockholdersEquity
Balance beginning, shares at Dec. 31, 2012	38,552,070
Translation adjustments						9,258,450	9,258,450
Common stock issued for exercising stock options, Number of shares issued	213,131
Common stock issued for exercising stock options	107		(107)
Issuance of stock options to employees			544,900				544,900
Cashless exercise of stock options							107
Net income					20,967,358		20,967,358us-gaap_NetIncomeLoss
Transfer to statutory common reserve fund				1,291,685	(1,291,685)
Balance at Dec. 31, 2013	19,383	(500,000)	80,033,981	17,265,572	166,421,427	31,754,729	294,995,092us-gaap_StockholdersEquity
Balance ending, shares at Dec. 31, 2013	38,765,201
Number of shares issued, ending balance at Dec. 31, 2013							38,765,201us-gaap_CommonStockSharesIssued
Translation adjustments						(1,077,846)	(1,077,846)
Common stock repurchased		(61,728)					(61,728)
Common stock repurchased, shares	(53,550)	53,550					53,550
Issuance of stock options to employees			346,100				346,100
Cashless exercise of stock options, Number of shares issued	145,813
Cashless exercise of stock options	73		(73)				73
Cashless exercise of stock options, shares	145,813
Net income					17,871,795		17,871,795us-gaap_NetIncomeLoss
Transfer to statutory common reserve fund				812,820	(812,820)
Balance at Dec. 31, 2014	$ 19,456	$ (561,728)	$ 80,380,008	$ 18,078,392	$ 183,480,402	$ 30,676,883	$ 312,073,413us-gaap_StockholdersEquity
Balance ending, shares at Dec. 31, 2014	38,672,865
Number of shares issued, ending balance at Dec. 31, 2014	38,911,014						38,911,014us-gaap_CommonStockSharesIssued