XML 135 R61.htm IDEA: XBRL DOCUMENT
v3.19.1

RECEIVABLES (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Nov. 07, 2018 USD ($) | Dec. 31, 2014 USD ($) note
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of Note Receivables | note |  |  |  | 2
Accounts receivable, net, current | $ 1,191,000 | $ 1,253,000 |  |
Notes receivable | 343,000 | $ 850,000 |  |
Financing receivable, principal amount | $ 500,000.00 |  | $ 550,000.00 | $ 1,050,000.00
Annual interest rate |  | 3.00% |  |
Annual interest rate of financial receivable | 18.00% |  |  |
Financing receivable, reserve against collectability | $ 220,000 | $ 220,000 |  |
Trade receivables - other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Accounts receivable, net, current | $ 848,000 | $ 403,000 |  |

X
- Definition Annual Interest Rate Of Financial Receivable + References No definition available. + Details
Name: | efr_AnnualInterestRateOfFinancialReceivable
Namespace Prefix: | efr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Notes Receivable, Current + References No definition available. + Details
Name: | efr_NotesReceivableCurrent
Namespace Prefix: | efr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of Note Receivables + References No definition available. + Details
Name: | efr_NumberofNoteReceivables
Namespace Prefix: | efr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Receivable with Stated Interest, Interest Rate + References No definition available. + Details
Name: | efr_ReceivablewithStatedInterestInterestRate
Namespace Prefix: | efr_
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AccountsReceivableNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=efr_TradeReceivableOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |