XML 74 R63.htm IDEA: XBRL DOCUMENT v3.19.1

15. BUSINESS SEGMENTS (Details 2) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue, Major Customer [Line Items]
Revenues	$ 38,570	$ 2,247,267
Shandong Morui Chemical Company Limited [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 689,000
Percentage of Total Revenue (%)		30.60%
Shandong Morui Chemical Company Limited [Member] | Bromine Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 0
Shandong Morui Chemical Company Limited [Member] | Crude Salt Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		534,000
Shandong Morui Chemical Company Limited [Member] | Chemical Products Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		155,000
Shandong Brother Technology Limited, Kuerle Xingdong Trading Limited
Revenue, Major Customer [Line Items]
Revenues		$ 670,000
Percentage of Total Revenue (%)		29.80%
Shandong Brother Technology Limited, Kuerle Xingdong Trading Limited | Bromine Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 0
Shandong Brother Technology Limited, Kuerle Xingdong Trading Limited | Crude Salt Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		670,000
Shandong Brother Technology Limited, Kuerle Xingdong Trading Limited | Chemical Products Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		0
Shouguang Weidong Chemical Company Limited
Revenue, Major Customer [Line Items]
Revenues		$ 435,000
Percentage of Total Revenue (%)		19.30%
Shouguang Weidong Chemical Company Limited | Bromine Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 0
Shouguang Weidong Chemical Company Limited | Crude Salt Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		435,000
Shouguang Weidong Chemical Company Limited | Chemical Products Segment [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 0

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- 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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

+ Details

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

X

- Details

Name:	srt_MajorCustomersAxis=gure_ShandongMaroiChemicalCompanyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gure_BromineSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gure_CrudeSaltSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=gure_ChemicalProductsSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=gure_ShandongBrotherTechnologyLimitedKuerleXingdongTradingLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=gure_ShouguangWeidongChemicalCompanyLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: