$UUUU
ENERGY FUELS INC Stock $uuuu

$uuuu Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000138584921000027 Filed on March 22, 2021

Income Statement

Concept	2020 Q4	2020 Q3	2020 Q2
Revenue	$384.0K	$486.0K	$395.0K
YoY Change	-45.22%	14.89%	-87.14%
Cost Of Revenue	$0.00	$0.00	$0.00
YoY Change	-100.0%	-100.0%	-100.0%
Gross Profit	$384.0K	$348.0K	-$33.00K
YoY Change	-106.9%	-118.1%	-99.27%
Gross Profit Margin	100.0%	71.6%	-8.35%
Selling, General & Admin	$3.350M	$3.823M	$3.170M
YoY Change	-6.69%	17.78%	-17.71%
% of Gross Profit	872.4%	1098.56%
Research & Development	$1.650M	$1.940M	$60.00K
YoY Change	46.02%	-16.02%	-95.71%
% of Gross Profit	429.69%	557.47%
Depreciation & Amortization	$790.0K	$810.0K	$800.0K
YoY Change	172.41%	179.31%	150.0%
% of Gross Profit	205.73%	232.76%
Operating Expenses	$1.390M	$3.823M	$3.170M
YoY Change	-69.45%	17.78%	-17.71%
Operating Profit	-$1.006M	-$9.348M	-$6.470M
YoY Change	-90.06%	5.84%	-43.76%
Interest Expense	$1.320M	$218.0K	$345.0K
YoY Change	915.38%	-47.97%	-4.7%
% of Operating Profit
Other Income/Expense, Net	-$5.400M	$628.0K	-$1.375M
YoY Change	-1962.07%	-72.84%	-153.88%
Pretax Income	-$5.080M	-$8.940M	-$8.190M
YoY Change	-47.68%	28.82%	-12.03%
Income Tax
% Of Pretax Income
Net Earnings	-$5.080M	-$8.938M	-$8.190M
YoY Change	-47.67%	28.81%	-12.07%
Net Earnings / Revenue	-1322.92%	-1839.09%	-2073.42%
Basic Earnings Per Share		-$0.08
Diluted Earnings Per Share	-$0.04	-$0.08	-$0.08
COMMON SHARES
Basic Shares Outstanding	131.1M shares	115.3M shares	102.3M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2020 Q4	2020 Q3	2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$22.40M	$28.10M	$28.30M
YoY Change	27.27%	24.89%	1.07%
Cash & Equivalents	$20.17M	$26.58M	$26.64M
Short-Term Investments	$2.200M	$1.500M	$1.700M
Other Short-Term Assets	$1.300M	$1.900M	$1.300M
YoY Change	-13.33%	18.75%	44.44%
Inventory	$28.92M	$28.57M	$27.73M
Prepaid Expenses	$1.313M	$1.903M	$1.274M
Receivables	$1.169M	$1.000M	$900.0K
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$52.47M	$58.41M	$57.02M
YoY Change	21.54%	22.7%	18.03%
LONG-TERM ASSETS
Property, Plant & Equipment	$23.62M	$24.30M	$24.74M
YoY Change	-9.85%	-10.3%	-12.24%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$800.0K	$600.0K	$700.0K
YoY Change	14.29%	100.0%	0.0%
Other Assets	$22.20M	$21.40M	$21.40M
YoY Change	4.72%	-1.83%	-1.83%
Total Long-Term Assets	$130.8M	$130.5M	$131.1M
YoY Change	-1.35%	-2.44%	-3.09%
TOTAL ASSETS
Total Short-Term Assets	$52.47M	$58.41M	$57.02M
Total Long-Term Assets	$130.8M	$130.5M	$131.1M
Total Assets	$183.2M	$188.9M	$188.1M
YoY Change	4.28%	4.16%	2.47%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.108M	$3.000M	$3.000M
YoY Change	-45.5%	-45.45%	-44.44%
Accrued Expenses	$300.0K	$300.0K	$300.0K
YoY Change	0.0%	0.0%	0.0%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$7.900M	$15.60M
YoY Change	-100.0%	1028.57%
Total Short-Term Liabilities	$12.31M	$13.73M	$18.98M
YoY Change	-45.6%	109.72%	232.4%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Other Long-Term Liabilities	$13.40M	$20.90M	$23.30M
YoY Change	-40.44%	-15.38%	-12.08%
Total Long-Term Liabilities	$13.40M	$20.90M	$23.30M
YoY Change	-40.44%	-48.52%	-46.56%
TOTAL LIABILITIES
Total Short-Term Liabilities	$12.31M	$13.73M	$18.98M
Total Long-Term Liabilities	$13.40M	$20.90M	$23.30M
Total Liabilities	$25.69M	$34.63M	$42.23M
YoY Change	-43.05%	-26.57%	-14.34%
SHAREHOLDERS EQUITY
Retained Earnings	-$397.8M	-$392.7M	-$383.9M
YoY Change	7.51%	8.99%	8.59%
Common Stock	$549.3M	$540.7M	$523.2M
YoY Change	11.21%	10.87%	8.76%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$153.8M	$150.5M	$142.1M
YoY Change
Total Liabilities & Shareholders Equity	$183.2M	$188.9M	$188.1M
YoY Change	4.28%	4.16%	2.47%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2020 Q2
OPERATING ACTIVITIES
Net Income	-$5.080M	-$8.938M	-$8.190M
YoY Change	-47.67%	28.81%	-12.07%
Depreciation, Depletion And Amortization	$790.0K	$810.0K	$800.0K
YoY Change	172.41%	179.31%	150.0%
Cash From Operating Activities	-$6.900M	-$9.450M	-$7.510M
YoY Change	-28.72%	-19.3%	-34.35%
INVESTING ACTIVITIES
Capital Expenditures	$110.0K	$370.0K	$150.0K
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$500.0K	$510.0K	$1.000M
YoY Change	-83.61%	-85.04%	-83.79%
Cash From Investing Activities	$390.0K	$140.0K	$850.0K
YoY Change	-87.21%	-95.89%	-86.22%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	520.0K	8.960M	8.530M
YoY Change	-89.03%	36.38%	30.43%
NET CHANGE
Cash From Operating Activities	-6.900M	-9.450M	-7.510M
Cash From Investing Activities	390.0K	140.0K	850.0K
Cash From Financing Activities	520.0K	8.960M	8.530M
Net Change In Cash	-5.990M	-350.0K	1.870M
YoY Change	216.93%	-79.77%	47.24%
FREE CASH FLOW
Cash From Operating Activities	-$6.900M	-$9.450M	-$7.510M
Capital Expenditures	$110.0K	$370.0K	$150.0K
Free Cash Flow	-$7.010M	-$9.820M	-$7.660M
YoY Change	-27.58%	-16.14%	-33.04%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0001385849
CY2020	dei	Entity Registrant Name EntityRegistrantName	ENERGY FUELS INC.
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	001-36204
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	Z4
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-1067994
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	225 Union Blvd., Suite 600
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Lakewood,
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	CO
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	80228
CY2020	dei	City Area Code CityAreaCode	303
CY2020	dei	Local Phone Number LocalPhoneNumber	974-2140
CY2020	dei	Security12b Title Security12bTitle	Common shares, no par value
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	true
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	280940000	USD
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CY2020	efr	Revenues Alternate Feed Materials Processingand Other RevenuesAlternateFeedMaterialsProcessingandOther	1658000	USD
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CY2020	efr	Standby Costs StandbyCosts	4015000	USD
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CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	157546000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	130607000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	183236000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	175720000	USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	127268000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	127268000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	129742000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-25362000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1554000	USD
CY2018	efr	Shares Issued For Cash By At The Market Offering SharesIssuedForCashByAtTheMarketOffering	32192000	USD
CY2018	efr	Stock Issuance Costs StockIssuanceCosts	-922000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2762000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	3739000	USD
CY2018	efr	Stock Issued During Period Value Cash Paymentfor Tax Withholding StockIssuedDuringPeriodValueCashPaymentforTaxWithholding	914000	USD
CY2018	efr	Adjustmentsto Additional Paidin Capital Shares Issued For Consulting Services AdjustmentstoAdditionalPaidinCapitalSharesIssuedForConsultingServices	-569000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	722000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	764000	USD
CY2018	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	8000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	144854000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-38094000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-854000	USD
CY2019	efr	Shares Issued For Cash By At The Market Offering SharesIssuedForCashByAtTheMarketOffering	20141000	USD
CY2019	efr	Stock Issuance Costs StockIssuanceCosts	-463000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3771000	USD
CY2019	efr	Adjustmentsto Additional Paidin Capital Shares Issued For Consulting Services AdjustmentstoAdditionalPaidinCapitalSharesIssuedForConsultingServices	-208000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	5000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	146000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	847000	USD
CY2019	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	46000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	130607000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-27872000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-681000	USD
CY2020	efr	Shares Issued For Cash By Public Offering Amount SharesIssuedForCashByPublicOfferingAmount	16611000	USD
CY2020	efr	Shares Issued For Cash By At The Market Offering SharesIssuedForCashByAtTheMarketOffering	38109000	USD
CY2020	efr	Stock Issuance Costs StockIssuanceCosts	-2330000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2598000	USD
CY2020	efr	Stock Issued During Period Value Cash Paymentfor Tax Withholding StockIssuedDuringPeriodValueCashPaymentforTaxWithholding	415000	USD
CY2020	efr	Adjustmentsto Additional Paidin Capital Shares Issued For Consulting Services AdjustmentstoAdditionalPaidinCapitalSharesIssuedForConsultingServices	-188000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	1000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	597000	USD
CY2020	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	133000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	157546000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-27872000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-38094000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-25362000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2701000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1213000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3790000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2598000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	3771000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	2762000	USD
CY2020	efr	Change In Value Of Convertible Debentures ChangeInValueOfConvertibleDebentures	-156000	USD
CY2019	efr	Change In Value Of Convertible Debentures ChangeInValueOfConvertibleDebentures	-291000	USD
CY2018	efr	Change In Value Of Convertible Debentures ChangeInValueOfConvertibleDebentures	612000	USD
CY2020	efr	Increase Decreasein Valueof Warrant Liabilities IncreaseDecreaseinValueofWarrantLiabilities	5436000	USD
CY2019	efr	Increase Decreasein Valueof Warrant Liabilities IncreaseDecreaseinValueofWarrantLiabilities	-3726000	USD
CY2018	efr	Increase Decreasein Valueof Warrant Liabilities IncreaseDecreaseinValueofWarrantLiabilities	3470000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1911000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1931000	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1835000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	1045000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-78000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	218000	USD
CY2020	efr	Increase Decreasein Noncash Standby Cost Accrued IncreaseDecreaseinNoncashStandbyCostAccrued	-7845000	USD
CY2019	efr	Increase Decreasein Noncash Standby Cost Accrued IncreaseDecreaseinNoncashStandbyCostAccrued	-1421000	USD
CY2018	efr	Increase Decreasein Noncash Standby Cost Accrued IncreaseDecreaseinNoncashStandbyCostAccrued	-662000	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	1644000	USD
CY2019	us-gaap	Inventory Write Down InventoryWriteDown	14351000	USD
CY2018	us-gaap	Inventory Write Down InventoryWriteDown	4579000	USD
CY2020	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2019	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	3622000	USD
CY2020	efr	Miscellaneous Non Cash Income Expenses MiscellaneousNonCashIncomeExpenses	-707000	USD
CY2019	efr	Miscellaneous Non Cash Income Expenses MiscellaneousNonCashIncomeExpenses	2314000	USD
CY2018	efr	Miscellaneous Non Cash Income Expenses MiscellaneousNonCashIncomeExpenses	1303000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6100000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	18534000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4299000	USD
CY2020	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-192000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	63000	USD
CY2018	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	346000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-149000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-12000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	631000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-3084000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-3195000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-613000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	0	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-2724000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2724000	USD
CY2020	efr	Cash Paid For Reclamation And Remediation Activities CashPaidForReclamationAndRemediationActivities	0	USD
CY2019	efr	Cash Paid For Reclamation And Remediation Activities CashPaidForReclamationAndRemediationActivities	0	USD
CY2018	efr	Cash Paid For Reclamation And Remediation Activities CashPaidForReclamationAndRemediationActivities	350000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-32178000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-44378000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-7784000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	627000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	0	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	107000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	25554000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	4208000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	22575000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	2554000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2940000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	3581000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	22575000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-20167000	USD
CY2020	efr	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	52390000	USD
CY2019	efr	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	19678000	USD
CY2018	efr	Proceeds From Issuance Of Common Stock And Warrants ProceedsFromIssuanceOfCommonStockAndWarrants	31517000	USD
CY2020	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2019	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	801000	USD
CY2018	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	415000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	914000	USD
CY2020	efr	Proceeds Received For Notes Receivable ProceedsReceivedForNotesReceivable	0	USD
CY2019	efr	Proceeds Received For Notes Receivable ProceedsReceivedForNotesReceivable	0	USD
CY2018	efr	Proceeds Received For Notes Receivable ProceedsReceivedForNotesReceivable	500000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	491000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	146000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	764000	USD
CY2020	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	0	USD
CY2019	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	5000	USD
CY2018	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	601000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	16015000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	317000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10855000	USD
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	133000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	46000	USD
CY2018	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	36584000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	20359000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	21613000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	107000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-71000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8094000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1401000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-6409000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	32891000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34292000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	40701000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	40985000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	32891000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34292000	USD
CY2020	efr	Issuance Of Common Shares To Settle Liabilities IssuanceOfCommonSharesToSettleLiabilities	0	USD
CY2019	efr	Issuance Of Common Shares To Settle Liabilities IssuanceOfCommonSharesToSettleLiabilities	847000	USD
CY2018	efr	Issuance Of Common Shares To Settle Liabilities IssuanceOfCommonSharesToSettleLiabilities	0	USD
CY2020	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	188000	USD
CY2019	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	208000	USD
CY2018	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	569000	USD
CY2020	us-gaap	Interest Paid InterestPaid	952000	USD
CY2019	us-gaap	Interest Paid InterestPaid	1491000	USD
CY2018	us-gaap	Interest Paid InterestPaid	1722000	USD
CY2020	efr	Warrant Liability Transferred To Equity Upon Exercise WarrantLiabilityTransferredToEquityUponExercise	0	USD
CY2019	efr	Warrant Liability Transferred To Equity Upon Exercise WarrantLiabilityTransferredToEquityUponExercise	2000	USD
CY2018	efr	Warrant Liability Transferred To Equity Upon Exercise WarrantLiabilityTransferredToEquityUponExercise	115000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Use of estimates</span></div><div style="margin-bottom:8pt;margin-top:8pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company’s consolidated financial statements have been prepared in accordance with U.S. GAAP. The preparation of the Company's consolidated financial statements requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions relate to expectations of the future price of uranium and estimates of recoverable mineral resources that are the basis for future cash flow estimates utilized in assessing fair value for business combinations and impairment calculations; the determination of whether an acquisition represents a business combination or an asset acquisition; </span></div>the use of management estimates and assumptions related to environmental, reclamation and closure obligations; marketable securities and derivative instruments; and share-based compensation expense. Actual results may differ significantly from these estimates.
CY2020	efr	Percentage Of Fair Value Investment PercentageOfFairValueInvestment	0.165
CY2019	efr	Percentage Of Fair Value Investment PercentageOfFairValueInvestment	0.165
CY2019Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1140000	USD
CY2019Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1230000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	824000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	418000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1841000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2247000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	4995000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	543000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	386000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	4838000	USD
CY2020Q4	efr	Notes Receivable Current NotesReceivableCurrent	343000	USD
CY2019Q4	efr	Notes Receivable Current NotesReceivableCurrent	343000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1169000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1254000	USD
CY2015Q4	efr	Numberof Note Receivables NumberofNoteReceivables	2	note
CY2014Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	1050000.00	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	500000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	550000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	220000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	220000	USD
CY2020Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	25768000	USD
CY2020Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	2912000	USD
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	2823000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	20893000	USD
CY2020Q4	efr	Inventory Of Ore In Stockpiles InventoryOfOreInStockpiles	241000	USD
CY2019Q4	efr	Inventory Of Ore In Stockpiles InventoryOfOreInStockpiles	241000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	28921000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	23957000	USD
CY2020Q4	efr	Inventory Current InventoryCurrent	27575000	USD
CY2019Q4	efr	Inventory Current InventoryCurrent	22808000	USD
CY2020Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	1346000	USD
CY2019Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	1149000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	28921000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	23957000	USD
CY2020	efr	Impairment Loss Relatedto Concentrationsand Workin Progress Inventory ImpairmentLossRelatedtoConcentrationsandWorkinProgressInventory	1640000	USD
CY2019	efr	Impairment Loss Relatedto Concentrationsand Workin Progress Inventory ImpairmentLossRelatedtoConcentrationsandWorkinProgressInventory	14350000	USD
CY2020	efr	Percentage Of Fair Value Investment PercentageOfFairValueInvestment	0.165
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	56364000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	32743000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	23621000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	55736000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	29533000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	26203000	USD
CY2020Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	83539000	USD
CY2019Q4	us-gaap	Mineral Properties Net MineralPropertiesNet	83539000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	18972000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	19104000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	7845000	USD
CY2019	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	2063000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1911000	USD
CY2019	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	1931000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2019	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	0	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	13038000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	18972000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	131000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	46000	USD
CY2020Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	12907000	USD
CY2019Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	18926000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	13038000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	18972000	USD
CY2020Q4	efr	Inflation Rate InflationRate	0.020
CY2020Q4	efr	Undiscounted Decommissioning Liability UndiscountedDecommissioningLiability	41950000	USD
CY2019Q4	efr	Undiscounted Decommissioning Liability UndiscountedDecommissioningLiability	41750000	USD
CY2020	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	7850000	USD
CY2020	efr	Asset Retirement Obligations Change In Estimated Undiscounted Cash Flow AssetRetirementObligationsChangeInEstimatedUndiscountedCashFlow	200000	USD
CY2020	efr	Asset Retirement Obligation Change In Estimated Timing Of Future Reclamation Activities AssetRetirementObligationChangeInEstimatedTimingOfFutureReclamationActivities	7650000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	20081000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	19652000	USD
CY2020Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	768000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	429000	USD
CY2020	efr	Refunds And Returns For The Period RefundsAndReturnsForThePeriod	32000	USD
CY2019	efr	Refunds And Returns For The Period RefundsAndReturnsForThePeriod	0	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	20817000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	20081000	USD
CY2020Q4	us-gaap	Convertible Debt Current ConvertibleDebtCurrent	0	USD
CY2018Q4	us-gaap	Convertible Debt Current ConvertibleDebtCurrent	16382000	USD
CY2020Q4	us-gaap	Loans Payable Current LoansPayableCurrent	0	USD
CY2019Q4	us-gaap	Loans Payable Current LoansPayableCurrent	484000	USD
CY2012Q3	efr	Public Offering Of Floating Rate Convertible Unsecured Subordinated Debentures PublicOfferingOfFloatingRateConvertibleUnsecuredSubordinatedDebentures	22000	shares
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	16866000	USD
CY2020Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	0	USD
CY2020Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	0	USD
CY2019Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	16862000	USD
CY2019Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	16866000	USD
CY2012Q3	efr	Price Per Debenture Issuance PricePerDebentureIssuance	1000	CAD
CY2012Q3	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	21550000	CAD
CY2016Q3	efr	Conversion Price Per Share ConversionPricePerShare	15.00
CY2016Q3	efr	Conversion Price Per Share ConversionPricePerShare	4.15
CY2016Q3	efr	Price Of Aggregate Principal Amount Redeemed Percent PriceOfAggregatePrincipalAmountRedeemedPercent	1.01
CY2016Q3	efr	Debentures Held By The Debentureholders DebenturesHeldByTheDebentureholders	0.20
CY2016Q3	efr	Principal Amount Purchased Plus Accrued And Unpaid Interest PrincipalAmountPurchasedPlusAccruedAndUnpaidInterest	1
CY2012Q3	efr	Consecutive Trading Days ConsecutiveTradingDays	P20D
CY2012Q3	efr	Average Trading Price Is Not Less Than Percent Of The Conversion Price AverageTradingPriceIsNotLessThanPercentOfTheConversionPrice	1.25
CY2012Q3	us-gaap	Debt Current DebtCurrent	1000	CAD
CY2012Q3	efr	Price Per Debenture Issuance PricePerDebentureIssuance	1000	CAD
CY2012Q3	efr	Volume Weighted Average Trading Price Of The Common Shares VolumeWeightedAverageTradingPriceOfTheCommonShares	0.95
CY2020	efr	Consecutive Trading Days ConsecutiveTradingDays	P20D
CY2020	efr	Gain Loss On Revaluation Of Convertible Debentures GainLossOnRevaluationOfConvertibleDebentures	160000	USD
CY2019	efr	Gain Loss On Revaluation Of Convertible Debentures GainLossOnRevaluationOfConvertibleDebentures	290000	USD
CY2018	efr	Gain Loss On Revaluation Of Convertible Debentures GainLossOnRevaluationOfConvertibleDebentures	-610000	USD
CY2019Q1	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	2328925	shares
CY2019Q1	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	2328925	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	100735889	shares
CY2020	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	12934	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	91445066	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	74366824	shares
CY2019	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	45040	shares
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation Gross StockIssuedDuringPeriodSharesShareBasedCompensationGross	115330	shares
CY2020	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	452932	shares
CY2019	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	786746	shares
CY2018	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	829610	shares
CY2020	efr	Stock Issued For Exercise Of Warrants StockIssuedForExerciseOfWarrants	0	shares
CY2019	efr	Stock Issued For Exercise Of Warrants StockIssuedForExerciseOfWarrants	1057	shares
CY2018	efr	Stock Issued For Exercise Of Warrants StockIssuedForExerciseOfWarrants	44185	shares
CY2020	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	74672	shares
CY2019	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	46067	shares
CY2018	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	122854	shares
CY2020	us-gaap	Stock Issued During Period Shares Purchase Of Assets StockIssuedDuringPeriodSharesPurchaseOfAssets	0	shares
CY2019	us-gaap	Stock Issued During Period Shares Purchase Of Assets StockIssuedDuringPeriodSharesPurchaseOfAssets	0	shares
CY2018	us-gaap	Stock Issued During Period Shares Purchase Of Assets StockIssuedDuringPeriodSharesPurchaseOfAssets	419986	shares
CY2020	us-gaap	Stock Issued During Period Shares Conversion Of Convertible Securities StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities	0	shares
CY2019	us-gaap	Stock Issued During Period Shares Conversion Of Convertible Securities StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities	0	shares
CY2018	us-gaap	Stock Issued During Period Shares Conversion Of Convertible Securities StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities	323	shares
CY2020	efr	Stock Issued During Period Shares Settlement Of Liability StockIssuedDuringPeriodSharesSettlementOfLiability	0	shares
CY2019	efr	Stock Issued During Period Shares Settlement Of Liability StockIssuedDuringPeriodSharesSettlementOfLiability	141525	shares
CY2018	efr	Stock Issued During Period Shares Settlement Of Liability StockIssuedDuringPeriodSharesSettlementOfLiability	0	shares
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	121168136	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	95665367	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	83475400	shares
CY2020	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-27776000	USD
CY2019	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-37978000	USD
CY2018	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-25245000	USD
CY2020	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	121168136	shares
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	95665367	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	83475400	shares
CY2020	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.23
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.40
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.30
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5780000	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5650000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8230000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	4.48
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2028847	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	1.75
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	442956	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	2.15
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	355092	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	3.96
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	213393	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	8.18
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	170564	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.84
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1732754	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.92
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.92
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	296450	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	2.27
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	54805	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	3.94
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	342866	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	6.97
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	6.97
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	144100	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.43
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1487433	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	1.77
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	711414	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.97
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	302707	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	3.26
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	188541	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	4.40
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	98512	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.91
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1609087	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1609087	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2731000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1205097	shares
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	1803000	USD
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	302707	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	1.97
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	490000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	420000	USD
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	54805	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	2.27
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	150000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	50000.00	USD
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	355092	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	2.15
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	760000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	410000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2598000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3771000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2762000	USD
CY2020	efr	Unrecognized Compensation Costs Related To Unvested Stock Options UnrecognizedCompensationCostsRelatedToUnvestedStockOptions	50000.00	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	339000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	381000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	297000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	297000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	0	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.090
CY2019	us-gaap	Sublease Income SubleaseIncome	56000	USD
CY2020	us-gaap	Lease Cost LeaseCost	636000	USD
CY2019	us-gaap	Lease Cost LeaseCost	622000	USD
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P2Y4M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y3M18D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.090
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	367000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	333000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	343000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	351000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	147000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	841000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	83000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	758000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-27872000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-38094000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-25362000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2650
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2650
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2650
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-7385000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-10095000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	7051000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	5405000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6721000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	565000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	985000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	623000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	1985000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	-376000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Other IncomeTaxReconciliationNondeductibleExpenseOther	597000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	4835000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	9486000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5501000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	137035000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	209000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	209000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	852000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	95060000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	88156000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	843000	USD
CY2020Q4	efr	Deferred Tax Assets Deferred Incomeand Other Noncurrent DeferredTaxAssetsDeferredIncomeandOtherNoncurrent	2057000	USD
CY2019Q4	efr	Deferred Tax Assets Deferred Incomeand Other Noncurrent DeferredTaxAssetsDeferredIncomeandOtherNoncurrent	2719000	USD
CY2020Q4	efr	Deferred Tax Assets Mineral Propertiesand Deferred Costs DeferredTaxAssetsMineralPropertiesandDeferredCosts	26554000	USD
CY2019Q4	efr	Deferred Tax Assets Mineral Propertiesand Deferred Costs DeferredTaxAssetsMineralPropertiesandDeferredCosts	27541000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	3455000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	5028000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1806000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1644000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	137035000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	131554000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	131554000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0	USD
CY2020	efr	Valuation Allowance Deferred Tax Asset Additions Amount ValuationAllowanceDeferredTaxAssetAdditionsAmount	7140000	USD
CY2020	efr	Valuation Allowance Deferred Tax Asset Deductions Amount ValuationAllowanceDeferredTaxAssetDeductionsAmount	1659000	USD
CY2019	efr	Valuation Allowance Deferred Tax Asset Additions Amount ValuationAllowanceDeferredTaxAssetAdditionsAmount	11459000	USD
CY2019	efr	Valuation Allowance Deferred Tax Asset Deductions Amount ValuationAllowanceDeferredTaxAssetDeductionsAmount	15669000	USD
CY2020Q4	efr	Operating Loss Carryforwards Expiration Estimated Amount OperatingLossCarryforwardsExpirationEstimatedAmount	75000000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	2720000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	153000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	482000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	336000	USD
CY2020	efr	Change In Value Of Investments Accounted At Fair Value ChangeInValueOfInvestmentsAccountedAtFairValue	1835000	USD
CY2019	efr	Change In Value Of Investments Accounted At Fair Value ChangeInValueOfInvestmentsAccountedAtFairValue	-153000	USD
CY2018	efr	Change In Value Of Investments Accounted At Fair Value ChangeInValueOfInvestmentsAccountedAtFairValue	769000	USD
CY2020	efr	Change In Value Of Warrant Liabilities ChangeInValueOfWarrantLiabilities	-5436000	USD
CY2019	efr	Change In Value Of Warrant Liabilities ChangeInValueOfWarrantLiabilities	3726000	USD
CY2018	efr	Change In Value Of Warrant Liabilities ChangeInValueOfWarrantLiabilities	-3469000	USD
CY2020	efr	Gain Loss On Revaluation Of Convertible Debentures GainLossOnRevaluationOfConvertibleDebentures	155000	USD
CY2019	efr	Gain Loss On Revaluation Of Convertible Debentures GainLossOnRevaluationOfConvertibleDebentures	291000	USD
CY2020Q4	us-gaap	Revenues Revenues	384000	USD
CY2018	efr	Gain Loss On Revaluation Of Convertible Debentures GainLossOnRevaluationOfConvertibleDebentures	-612000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	0	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	341000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	767000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-46000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	293000	USD
CY2020	efr	Component Of Other Income Expense ComponentOfOtherIncomeExpense	233000	USD
CY2019	efr	Component Of Other Income Expense ComponentOfOtherIncomeExpense	-322000	USD
CY2018	efr	Component Of Other Income Expense ComponentOfOtherIncomeExpense	14000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2293000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3978000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2328000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	483000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2033000	USD
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	432000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	1588000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2406000	USD
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1817000	USD
CY2020Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	3321000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	5438000	USD
CY2020Q1	us-gaap	Revenues Revenues	393000	USD
CY2020Q2	us-gaap	Revenues Revenues	395000	USD
CY2020Q3	us-gaap	Revenues Revenues	486000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-8938000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	-685000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	-33000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	348000	USD
CY2020Q4	us-gaap	Gross Profit GrossProfit	384000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-5664000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-8190000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	-5080000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.05
CY2020Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2020Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.04
CY2020Q1	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-5657000	USD
CY2020Q2	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-8187000	USD
CY2020Q3	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-8855000	USD
CY2020Q4	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-5077000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.05
CY2020Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2020Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.04
CY2020Q1	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	107618908	shares
CY2020Q2	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	118118935	shares
CY2020Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	126624498	shares
CY2020Q4	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	132129787	shares
CY2019Q1	us-gaap	Revenues Revenues	1670000	USD
CY2019Q2	us-gaap	Revenues Revenues	3071000	USD
CY2019Q3	us-gaap	Revenues Revenues	423000	USD
CY2019Q4	us-gaap	Revenues Revenues	701000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	-422000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	-4521000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	-1923000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	-5567000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-12134000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-9314000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-6939000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-9707000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.13
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.10
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.10
CY2019Q1	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-12127000	USD
CY2019Q2	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-9312000	USD
CY2019Q3	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-6840000	USD
CY2019Q4	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	-9699000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.13
CY2019Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.10
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.07
CY2019Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.10
CY2019Q1	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	92152844	shares
CY2019Q2	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	93920953	shares
CY2019Q3	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	96840539	shares
CY2019Q4	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	99668611	shares
CY2016Q2	efr	Royalty Percentageof Minerals Recovered Sold Under Minimum Price Threshold RoyaltyPercentageofMineralsRecoveredSoldUnderMinimumPriceThreshold	0.03125
CY2017Q2	efr	Mineral Price Per Pound Low Range MineralPricePerPoundLowRange	65.00	USD
CY2016Q2	efr	Royalty Percentageof Minerals Recovered Sold Between Price Thresholds RoyaltyPercentageofMineralsRecoveredSoldBetweenPriceThresholds	0.0625
CY2017Q2	efr	Mineral Price Per Pound Low Range MineralPricePerPoundLowRange	65.00	USD
CY2017Q2	efr	Mineral Price Per Pound Upper Range MineralPricePerPoundUpperRange	95.00	USD
CY2016Q2	efr	Royalty Percentageof Minerals Recovered Sold Above Maximum Price Threshold RoyaltyPercentageofMineralsRecoveredSoldAboveMaximumPriceThreshold	0.075
CY2017Q2	efr	Mineral Price Per Pound Upper Range MineralPricePerPoundUpperRange	95.00	USD
CY2020	us-gaap	Payments For Royalties PaymentsForRoyalties	300000	USD

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$UUUU
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2020 Q4 Form 10-K Financial Statement

#000138584921000027 Filed on March 22, 2021

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Balance Sheet

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$UUUU ENERGY FUELS INC Stock $uuuu

2020 Q4 Form 10-K Financial Statement

#000138584921000027 Filed on March 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UUUU
ENERGY FUELS INC Stock $uuuu