XML 66 R58.htm IDEA: XBRL DOCUMENT v3.4.0.3

Schedules of Components of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Uranium concentrates	$ 17,978	$ 6,995
Alternate feed materials processing and other	18	605
Revenues	$ 17,996	$ 7,600

X

- Definition

Alternate feed materials processing and other

+ References

No definition available.

+ Details

Name:	efr_AlternateFeedMaterialsProcessingAndOther
Namespace Prefix:	efr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Uranium concentrates

+ References

No definition available.

+ Details

Name:	efr_UraniumConcentrates
Namespace Prefix:	efr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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/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

+ Details

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