XML 50 R42.htm IDEA: XBRL DOCUMENT
v3.4.0.3

SEGMENT INFORMATION (Narrative) (Details) | 3 Months Ended
--- | ---
Mar. 31, 2016
Operations whose revenues, earnings or losses or assets exceed total consolidated revenue | 10.00%

X
- Definition Operations whose revenues, earnings or losses or assets exceed total consolidated revenue + References No definition available. + Details
Name: | efr_OperationsWhoseRevenuesEarningsOrLossesOrAssetsExceedTotalConsolidatedRevenue
Namespace Prefix: | efr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration