15. BUSINESS SEGMENTS (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net revenue (external customers)	$ 34,910,829us-gaap_Revenues	$ 25,592,176us-gaap_Revenues
Net revenue (intersegment)	1,505,677gure_NetRevenueIntersegment	783,993gure_NetRevenueIntersegment
Income (loss) from operations before taxes	7,110,651us-gaap_OperatingIncomeLoss	5,601,644us-gaap_OperatingIncomeLoss
Income taxes	1,871,488us-gaap_IncomeTaxExpenseBenefit	1,369,069us-gaap_IncomeTaxExpenseBenefit
Income (loss) from operations after taxes	5,239,163	4,232,575
Total assets	354,324,931gure_TotalAssets1	309,614,418gure_TotalAssets1
Depreciation and amortization	7,378,988	6,938,240
Goodwill	31,452,271us-gaap_Goodwill		0us-gaap_Goodwill
Capital expenditures		39,586
Bromine Segment [Member]
Segment Reporting Information [Line Items]
Net revenue (external customers)	11,033,249	11,761,916
Net revenue (intersegment)	1,505,677	783,993
Income (loss) from operations before taxes	136,959	1,018,271
Income taxes	75,406	364,585
Income (loss) from operations after taxes	61,553	653,687
Total assets	140,192,979	187,576,805
Depreciation and amortization	4,735,301	4,550,142
Goodwill
Capital expenditures		34,378
Crude Salt Segment [Member]
Segment Reporting Information [Line Items]
Net revenue (external customers)	1,963,731	2,441,895
Net revenue (intersegment)
Income (loss) from operations before taxes	187,535	643,308
Income taxes	9,057	55,240
Income (loss) from operations after taxes	178,478	588,067
Total assets	37,708,081	53,277,324
Depreciation and amortization	1,401,296	1,494,758
Goodwill
Capital expenditures		5,208
Chemical Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenue (external customers)	21,913,849	11,388,365
Net revenue (intersegment)
Income (loss) from operations before taxes	7,046,740	3,769,733
Income taxes	1,787,025	949,244
Income (loss) from operations after taxes	5,259,715	2,820,489
Total assets	176,388,517	68,675,614
Depreciation and amortization	1,242,391	893,340
Goodwill	31,452,271
Capital expenditures
Segment Total [Member]
Segment Reporting Information [Line Items]
Net revenue (external customers)	34,910,829	25,592,179
Net revenue (intersegment)	1,505,677	783,993
Income (loss) from operations before taxes	7,371,234	5,431,312
Income taxes	1,871,488	1,369,069
Income (loss) from operations after taxes	5,499,746	4,062,243
Total assets	354,289,577	309,529,743
Depreciation and amortization	7,378,988	6,938,240
Goodwill	31,452,271
Capital expenditures		39,586
Corporate [Member]
Segment Reporting Information [Line Items]
Net revenue (external customers)	0
Net revenue (intersegment)
Income (loss) from operations before taxes	(260,583)	170,332
Income taxes
Income (loss) from operations after taxes	(260,583)	170,322
Total assets	35,354	84,675
Depreciation and amortization
Goodwill
Capital expenditures

No authoritative reference available.

No definition available.

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

- Definition

Income Loss From Continuing Operations After Income Taxes

+ References

No definition available.

+ Details

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Namespace Prefix:	gure_
Data Type:	xbrli:monetaryItemType
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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Namespace Prefix:	gure_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6515339

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

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

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

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

- Definition

Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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 210.5-03.1)

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Details

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- Details

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