$NWBO
NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo

$nwbo Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000114420419017803 Filed on April 02, 2019

Income Statement

Concept	2018	2017 Q4	2017
Revenue	$412.0K	$30.00K	$336.0K
YoY Change	22.62%	-57.14%	-46.07%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$27.02M	$4.720M	$21.50M
YoY Change	25.66%	5.12%	8.54%
% of Gross Profit
Research & Development	$18.15M	$37.00K	$33.52M
YoY Change	-45.83%	-99.78%	-44.22%
% of Gross Profit
Depreciation & Amortization	$1.300M	$300.0K	$400.0K
YoY Change	225.0%	500.0%	111.64%
% of Gross Profit
Operating Expenses	$18.15M	$37.00K	$33.52M
YoY Change	-45.83%	-99.83%	-44.22%
Operating Profit	-$41.48M		-$54.68M
YoY Change	-24.14%		-31.02%
Interest Expense	$9.871M	-$6.970M	$5.545M
YoY Change	78.02%	127.78%	45.23%
% of Operating Profit
Other Income/Expense, Net	$5.687M	$0.00	-$18.47M
YoY Change	-130.8%		1167.33%
Pretax Income	-$35.79M	-$27.00M	-$73.14M
YoY Change	-51.06%	-12.08%	-8.82%
Income Tax	$0.00	$0.00	$0.00
% Of Pretax Income
Net Earnings	-$35.79M	-$27.00M	-$73.14M
YoY Change	-51.06%	-12.08%	-8.82%
Net Earnings / Revenue	-8687.86%	-90000.0%	-21768.75%
Basic Earnings Per Share
Diluted Earnings Per Share	-$81.35K	-$84.74K	-$301.2K
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2018	2017 Q4	2017
SHORT-TERM ASSETS
Cash & Short-Term Investments	$22.22M	$120.0K	$117.0K
YoY Change	18894.87%	-98.06%	-98.11%
Cash & Equivalents	$22.22M	$117.0K	$117.0K
Short-Term Investments
Other Short-Term Assets	$1.574M	$1.290M	$1.285M
YoY Change	22.49%	-24.12%	-24.32%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$23.80M	$1.402M	$1.402M
YoY Change	1597.43%	-82.22%	-82.22%
LONG-TERM ASSETS
Property, Plant & Equipment	$108.0K	$47.49M	$47.49M
YoY Change	-99.77%	14975.56%	5.83%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$761.0K	$17.00K	$17.00K
YoY Change	4376.47%	-88.51%	-88.51%
Total Long-Term Assets	$869.0K	$47.51M	$47.51M
YoY Change	-98.17%	5.52%	5.52%
TOTAL ASSETS
Total Short-Term Assets	$23.80M	$1.402M	$1.402M
Total Long-Term Assets	$869.0K	$47.51M	$47.51M
Total Assets	$24.67M	$48.91M	$48.91M
YoY Change	-49.56%	-7.56%	-7.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$20.09M	$18.40M	$18.40M
YoY Change	9.21%	48.65%	-48.5%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Long-Term Debt Due	$14.81M	$19.60M	$19.60M
YoY Change	-24.45%	-5.54%	-5.53%
Total Short-Term Liabilities	$69.84M	$87.68M	$87.68M
YoY Change	-20.35%	14.76%	14.76%
LONG-TERM LIABILITIES
Long-Term Debt	$1.986M	$8.520M	$8.517M
YoY Change	-76.68%	184.0%	183.9%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$1.986M	$8.517M	$8.517M
YoY Change	-76.68%	183.9%	183.9%
TOTAL LIABILITIES
Total Short-Term Liabilities	$69.84M	$87.68M	$87.68M
Total Long-Term Liabilities	$1.986M	$8.517M	$8.517M
Total Liabilities	$71.83M	$96.20M	$96.20M
YoY Change	-25.34%	21.15%	21.15%
SHAREHOLDERS EQUITY
Retained Earnings		-$788.6M
YoY Change
Common Stock		$721.9M
YoY Change		5.06%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$47.16M	-$67.33M	-$47.29M
YoY Change
Total Liabilities & Shareholders Equity	$24.67M	$48.91M	$48.91M
YoY Change	-49.56%	-7.56%	-7.56%

Cashflow Statement

Concept	2018	2017 Q4	2017
OPERATING ACTIVITIES
Net Income	-$35.79M	-$27.00M	-$73.14M
YoY Change	-51.06%	-12.08%	-8.82%
Depreciation, Depletion And Amortization	$1.300M	$300.0K	$400.0K
YoY Change	225.0%	500.0%	111.64%
Cash From Operating Activities	-$34.59M	-$14.80M	-$36.50M
YoY Change	-5.23%	5.04%	-34.42%
INVESTING ACTIVITIES
Capital Expenditures	-$193.0K	$0.00	-$8.000K
YoY Change	2312.5%	-100.0%	-99.84%
Acquisitions
YoY Change
Other Investing Activities	$45.60M	$0.00	$220.0K
YoY Change	20625.0%
Cash From Investing Activities	$45.40M	$0.00	$212.0K
YoY Change	21316.04%	-100.0%	-104.29%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	7.871M	14.29M	34.29M
YoY Change	-77.05%	-18.3%	-10.49%
NET CHANGE
Cash From Operating Activities	-34.59M	-14.80M	-36.50M
Cash From Investing Activities	45.40M	0.000	212.0K
Cash From Financing Activities	7.871M	14.29M	34.29M
Net Change In Cash	18.69M	-510.0K	-$6.754M
YoY Change	-376.68%	-115.79%	-58.25%
FREE CASH FLOW
Cash From Operating Activities	-$34.59M	-$14.80M	-$36.50M
Capital Expenditures	-$193.0K	$0.00	-$8.000K
Free Cash Flow	-$34.39M	-$14.80M	-$36.49M
YoY Change	-5.74%	6.32%	-28.05%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
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CY2017Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8517000
CY2018Q4	us-gaap	Liabilities Liabilities	71826000
CY2017Q4	us-gaap	Liabilities Liabilities	96200000
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2017Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	2507000
CY2018Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1986000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	117000
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1574000
CY2017Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1285000
CY2018Q4	us-gaap	Assets Current AssetsCurrent	23798000
CY2017Q4	us-gaap	Assets Current AssetsCurrent	1402000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	108000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	47488000
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	761000
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	17000
CY2018Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	869000
CY2017Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	47505000
CY2018Q4	us-gaap	Assets Assets	24667000
CY2017Q4	us-gaap	Assets Assets	48907000
CY2018Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	15506000
CY2017Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	13015000
CY2018Q4	nwbo	Accounts Payable And Accrued Liabilities Related Parties Current AccountsPayableAndAccruedLiabilitiesRelatedPartiesCurrent	4588000
CY2017Q4	nwbo	Accounts Payable And Accrued Liabilities Related Parties Current AccountsPayableAndAccruedLiabilitiesRelatedPartiesCurrent	5385000
CY2018Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	1863000
CY2017Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	135000
CY2018Q4	nwbo	Convertible Notes Payable Related Parties Current ConvertibleNotesPayableRelatedPartiesCurrent	5400000
CY2017Q4	nwbo	Convertible Notes Payable Related Parties Current ConvertibleNotesPayableRelatedPartiesCurrent	0
CY2018Q4	us-gaap	Notes Payable Current NotesPayableCurrent	7155000
CY2017Q4	us-gaap	Notes Payable Current NotesPayableCurrent	7122000
CY2018Q4	us-gaap	Notes Payable Related Parties Classified Current NotesPayableRelatedPartiesClassifiedCurrent	393000
CY2017Q4	us-gaap	Notes Payable Related Parties Classified Current NotesPayableRelatedPartiesClassifiedCurrent	1121000
CY2018Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	0
CY2017Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	3308000
CY2018Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	0
CY2017Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	6200000
CY2018Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	29995000
CY2017Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	40171000
CY2018Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	0
CY2017Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	11226000
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	69840000
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	87683000
CY2018Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	0
CY2017Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	6010000
CY2018Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	1986000
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	523000
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	329000
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	775741000
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	721554000
CY2018Q4	us-gaap	Common Stock Share Subscribed But Unissued Subscriptions Receivable CommonStockShareSubscribedButUnissuedSubscriptionsReceivable	10000
CY2017Q4	us-gaap	Common Stock Share Subscribed But Unissued Subscriptions Receivable CommonStockShareSubscribedButUnissuedSubscriptionsReceivable	0
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-824413000
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-788619000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1000000
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-597000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	-47159000
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	-67333000
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24667000
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	30352000
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1551000
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CY2018	nwbo	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements Related To Conversion Of Sharesettled Debt FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlementsRelatedToConversionOfSharesettledDebt	3308000
CY2018	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-18303000
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	48907000
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	412000
CY2017	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	336000
CY2018	us-gaap	Revenues Revenues	412000
CY2017	us-gaap	Revenues Revenues	336000
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	18154000
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	33515000
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	22511000
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12458000
CY2018	us-gaap	Legal Fees LegalFees	4504000
CY2017	us-gaap	Legal Fees LegalFees	9041000
CY2018	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	45169000
CY2017	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	55014000
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	-41481000
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-54678000
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	18303000
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-2578000
CY2018	us-gaap	Interest Expense InterestExpense	9871000
CY2017	us-gaap	Interest Expense InterestExpense	5545000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2830000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	4524000
CY2018	nwbo	Deemed Dividend On Convertible Preferred Stock DeemedDividendOnConvertiblePreferredStock	17765000
CY2017	nwbo	Deemed Dividend On Convertible Preferred Stock DeemedDividendOnConvertiblePreferredStock	1266000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-53559000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-74409000
CY2018Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	357000
CY2018Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	30352000
CY2017Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	2608000
CY2017Q4	us-gaap	Debt Default Longterm Debt Amount DebtDefaultLongtermDebtAmount	3308000
CY2017Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	46087000
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-1597000
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	2445000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-34197000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-75588000
CY2018	nwbo	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Warrant Granted FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisWarrantGranted	10066000
CY2018	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	2492000
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CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	9.90
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	12656000
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CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0
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CY2018	us-gaap	Depreciation Depreciation	1300000
CY2017	us-gaap	Depreciation Depreciation	400000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	505266000
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	520027000
CY2018Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	69000
CY2018	us-gaap	Conversion Of Stock Shares Converted1 ConversionOfStockSharesConverted1	10000000
CY2018Q4	us-gaap	Convertible Preferred Stock Shares Issued Upon Conversion ConvertiblePreferredStockSharesIssuedUponConversion	100000000
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CY2017	nwbo	Class Of Warrant Or Right Granted ClassOfWarrantOrRightGranted	362240
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CY2017	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	59483
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CY2017Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	320406
CY2017Q4	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	0.50
CY2017	nwbo	Class Of Warrant Or Right Oustanding Remaining Contractual Term ClassOfWarrantOrRightOustandingRemainingContractualTerm	P2Y7M13D
CY2018	nwbo	Class Of Warrant Or Right Granted ClassOfWarrantOrRightGranted	75669
CY2018	nwbo	Class Of Warrant Or Right Granted Weighted Average Exercise Price ClassOfWarrantOrRightGrantedWeightedAverageExercisePrice	0.48
CY2018	nwbo	Number Of Warrants Warrants Exercised For Cash NumberOfWarrantsWarrantsExercisedForCash	10936
CY2018	nwbo	Weighted Average Exercise Price Exercised For Cash WeightedAverageExercisePriceExercisedForCash	0.23
CY2018	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	12986
CY2018	nwbo	Class Of Warrant Or Right Expired Weighted Average Exercise Price ClassOfWarrantOrRightExpiredWeightedAverageExercisePrice	1.33
CY2018Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	372153
CY2018Q4	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	0.29
CY2018	nwbo	Class Of Warrant Or Right Oustanding Remaining Contractual Term ClassOfWarrantOrRightOustandingRemainingContractualTerm	P1Y11M19D
CY2018Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	138000
CY2017Q4	us-gaap	Deferred Compensation Share Based Arrangements Liability Current DeferredCompensationShareBasedArrangementsLiabilityCurrent	0
CY2018	us-gaap	Induced Conversion Of Convertible Debt Expense InducedConversionOfConvertibleDebtExpense	0
CY2017	us-gaap	Induced Conversion Of Convertible Debt Expense InducedConversionOfConvertibleDebtExpense	2297000
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1291000
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	439000
CY2018	nwbo	Amortization Of Debt Discount AmortizationOfDebtDiscount	6706000
CY2017	nwbo	Amortization Of Debt Discount AmortizationOfDebtDiscount	1516000
CY2018	nwbo	Amortization Of Debt Premium AmortizationOfDebtPremium	355000
CY2017	nwbo	Amortization Of Debt Premium AmortizationOfDebtPremium	-407000
CY2017	us-gaap	Induced Conversion Of Convertible Debt Expense InducedConversionOfConvertibleDebtExpense	2297000
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	18303000
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-2578000
CY2018	nwbo	Loss On Extinguishment Of Debt LossOnExtinguishmentOfDebt	-85000
CY2017	nwbo	Loss On Extinguishment Of Debt LossOnExtinguishmentOfDebt	12119000
CY2018	nwbo	Stock Based Compensation Related To Warrants Modification StockBasedCompensationRelatedToWarrantsModification	141000
CY2017	nwbo	Stock Based Compensation Related To Warrants Modification StockBasedCompensationRelatedToWarrantsModification	0
CY2018	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	14145000
CY2017	us-gaap	Issuance Of Stock And Warrants For Services Or Claims IssuanceOfStockAndWarrantsForServicesOrClaims	842000
CY2018	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	264000
CY2017	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	28593000
CY2018	nwbo	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	304000
CY2017	nwbo	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	281000
CY2018	nwbo	Deposits And Other Assets Noncurrent DepositsAndOtherAssetsNoncurrent	734000
CY2017	nwbo	Deposits And Other Assets Noncurrent DepositsAndOtherAssetsNoncurrent	-131000
CY2018	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	-436000
CY2017	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	501000
CY2018	us-gaap	Increase Decrease In Due To Related Parties Current IncreaseDecreaseInDueToRelatedPartiesCurrent	4002000
CY2017	us-gaap	Increase Decrease In Due To Related Parties Current IncreaseDecreaseInDueToRelatedPartiesCurrent	7704000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-34586000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-36495000
CY2018	nwbo	Refund Of Leashold Improvement Related To Uk Construction RefundOfLeasholdImprovementRelatedToUkConstruction	0
CY2017	nwbo	Refund Of Leashold Improvement Related To Uk Construction RefundOfLeasholdImprovementRelatedToUkConstruction	-220000
CY2018	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	0
CY2017	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	8000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	45402000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	212000
CY2018	nwbo	Proceeds From Issuance Of Capital Stock And Warrants ProceedsFromIssuanceOfCapitalStockAndWarrants	1000000
CY2017	nwbo	Proceeds From Issuance Of Capital Stock And Warrants ProceedsFromIssuanceOfCapitalStockAndWarrants	8653000
CY2018	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	23000
CY2017	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	2117000
CY2018	nwbo	Proceeds From Subscription Receivable ProceedsFromSubscriptionReceivable	138000
CY2017	nwbo	Proceeds From Subscription Receivable ProceedsFromSubscriptionReceivable	0
CY2018	nwbo	Proceeds From Investors ProceedsFromInvestors	100000
CY2017	nwbo	Proceeds From Investors ProceedsFromInvestors	0
CY2018	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	2575000
CY2017	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	2637000
CY2018	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	8000000
CY2017	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	9564000
CY2018	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	95000
CY2017	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	2805000
CY2018	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	1700000
CY2017	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	1604000
CY2018	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	5400000
CY2017	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0
CY2018	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	2350000
CY2017	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0
CY2018	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	823000
CY2017	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	1994000
CY2018	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	5350000
CY2017	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	3258000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	7871000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	34290000
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	3420000
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-4761000
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	22107000
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-6754000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6871000
CY2018	nwbo	Deemed Dividends On Conversion Of Series Convertible Preferred Stock To Common Stock DeemedDividendsOnConversionOfSeriesConvertiblePreferredStockToCommonStock	10892000
CY2018	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Accretion Of Redemption Value Of Series B Convertible Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesBConvertibleStock	2086000
CY2018	nwbo	Stock Issued During Period Value Conversion Of Convertible Preferred Stock One StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStockOne	19697000
CY2018	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Conversion Of Preferred Convertible Stock Into Common Stock One AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToConversionOfPreferredConvertibleStockIntoCommonStockOne	4787000
CY2018	nwbo	Reclassification Of Warrant Liabilities Related To Cashless Warrants Exercise ReclassificationOfWarrantLiabilitiesRelatedToCashlessWarrantsExercise	0
CY2018	nwbo	Stock Issued During Period Value For Warrant Cashless Exercise StockIssuedDuringPeriodValueForWarrantCashlessExercise	0
CY2018	nwbo	Issuance Of Common Stock And Warrants For Conversion Of Debt And Accrued Interest Received IssuanceOfCommonStockAndWarrantsForConversionOfDebtAndAccruedInterestReceived	6480000
CY2018	us-gaap	Notes Reduction NotesReduction	0
CY2018	us-gaap	Notes Issued1 NotesIssued1	0
CY2018	nwbo	Debt Conversion Converted Instrument Associate Warrants DebtConversionConvertedInstrumentAssociateWarrants	4217000
CY2018	nwbo	Warrants Issued Associated With Convertible Notes Payable To Related Party WarrantsIssuedAssociatedWithConvertibleNotesPayableToRelatedParty	67000
CY2018	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	500000
CY2018	nwbo	Reclassification Of Accrued Interst To Subscription Receivable ReclassificationOfAccruedInterstToSubscriptionReceivable	9000
CY2017	nwbo	Deemed Dividends On Conversion Of Series Convertible Preferred Stock To Common Stock DeemedDividendsOnConversionOfSeriesConvertiblePreferredStockToCommonStock	624000
CY2017	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Accretion Of Redemption Value Of Series B Convertible Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesBConvertibleStock	366000
CY2017	nwbo	Stock Issued During Period Value Conversion Of Convertible Preferred Stock One StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStockOne	0
CY2017	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Conversion Of Preferred Convertible Stock Into Common Stock One AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToConversionOfPreferredConvertibleStockIntoCommonStockOne	0
CY2017	nwbo	Reclassification Of Warrant Liabilities Related To Cashless Warrants Exercise ReclassificationOfWarrantLiabilitiesRelatedToCashlessWarrantsExercise	3054000
CY2017	nwbo	Stock Issued During Period Value For Warrant Cashless Exercise StockIssuedDuringPeriodValueForWarrantCashlessExercise	7000
CY2017	nwbo	Issuance Of Common Stock And Warrants For Conversion Of Debt And Accrued Interest Received IssuanceOfCommonStockAndWarrantsForConversionOfDebtAndAccruedInterestReceived	11979000
CY2017	us-gaap	Notes Reduction NotesReduction	3750000
CY2017	us-gaap	Notes Issued1 NotesIssued1	1826000
CY2017	nwbo	Debt Conversion Converted Instrument Associate Warrants DebtConversionConvertedInstrumentAssociateWarrants	0
CY2017	nwbo	Warrants Issued Associated With Convertible Notes Payable To Related Party WarrantsIssuedAssociatedWithConvertibleNotesPayableToRelatedParty	139000
CY2017	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	521000
CY2017	nwbo	Reclassification Of Accrued Interst To Subscription Receivable ReclassificationOfAccruedInterstToSubscriptionReceivable	0
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	14110000
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	568000
CY2018	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	7365000
CY2017	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	24622000
CY2018Q4	us-gaap	Accounts Payable Related Parties Current And Noncurrent AccountsPayableRelatedPartiesCurrentAndNoncurrent	13443000
CY2017Q4	us-gaap	Accounts Payable Related Parties Current And Noncurrent AccountsPayableRelatedPartiesCurrentAndNoncurrent	5203000
CY2018Q4	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	0.30
CY2018Q4	us-gaap	Warrants Not Settleable In Cash Fair Value Disclosure WarrantsNotSettleableInCashFairValueDisclosure	4200000
CY2018Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	65000
CY2018Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2018Q4	nwbo	Shares Issued During Period Shares Upon Exercise Of Warrants SharesIssuedDuringPeriodSharesUponExerciseOfWarrants	10900000
CY2018	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	2600000
CY2017Q2	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	496000
CY2018Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	4802000
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1200000000
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1200000000
CY2018Q4	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5687000
CY2018Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	100000000
CY2017Q4	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Temporary Equity Shares Authorized TemporaryEquitySharesAuthorized	100000000
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	3276000
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-18465000
CY2018	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.12
CY2017	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.31
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	440016000
CY2017	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	242849000
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	-26499000
CY2017	nwbo	Adjustments To Additional Paid In Capital Beneficial Conversion Feature Of Series B Convertible Preferred Stock AdjustmentsToAdditionalPaidInCapitalBeneficialConversionFeatureOfSeriesBConvertiblePreferredStock	366000
CY2017	nwbo	Stock Issued During Period Value Conversion Of Convertible Preferred Stock StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStock	680000
CY2017	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	2540000
CY2017	nwbo	Value Of Warrants Exercised For Cash ValueOfWarrantsExercisedForCash	2866000
CY2017	nwbo	Stock And Warrants Issued During Period Value Conversion Of Debt And Accrued Interest StockAndWarrantsIssuedDuringPeriodValueConversionOfDebtAndAccruedInterest	15640000
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	842000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2445000
CY2018	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	700000
CY2018	nwbo	Stock Issued During Period Value Conversion Of Convertible Preferred Stock StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStock	18929000
CY2018	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Conversion Of Preferred Convertible Stock Into Common Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToConversionOfPreferredConvertibleStockIntoCommonStock	-10892000
CY2018	nwbo	Adjustments To Additional Paid In Capital Beneficial Conversion Feature Of Series B Convertible Preferred Stock AdjustmentsToAdditionalPaidInCapitalBeneficialConversionFeatureOfSeriesBConvertiblePreferredStock	2086000
CY2018	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Accretion Of Redemption Value Of Series B Convertible Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesBConvertibleStock	2086000
CY2018	nwbo	Value Of Warrants Exercised For Cash ValueOfWarrantsExercisedForCash	2575000
CY2018	nwbo	Adjustments To Additional Paid In Capital Reclassification AdjustmentsToAdditionalPaidInCapitalReclassification	2492000
CY2018	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	3308000
CY2018	nwbo	Stock And Warrants Issued During Period Value Conversion Of Debt And Accrued Interest StockAndWarrantsIssuedDuringPeriodValueConversionOfDebtAndAccruedInterest	8072000
CY2018	nwbo	Shareholders Equity Reclass Between Accrued Interest And Subscription Receivable ShareholdersEquityReclassBetweenAccruedInterestAndSubscriptionReceivable	9000
CY2018	nwbo	Shareholders Equity Proceeds From Investor To Offset Subscription Receivable ShareholdersEquityProceedsFromInvestorToOffsetSubscriptionReceivable	100000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14145000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1597000
CY2017	nwbo	Adjustments To Additional Paid In Capital Reclassification AdjustmentsToAdditionalPaidInCapitalReclassification	2162000
CY2017	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	1892000
CY2017	nwbo	Adjustments To Additional Paid In Capital Beneficial Conversion Feature Of Series Convertible Preferred Stock AdjustmentsToAdditionalPaidInCapitalBeneficialConversionFeatureOfSeriesConvertiblePreferredStock	276000
CY2017	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Accretion Of Redemption Value Of Series Convertible Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesConvertibleStock	-276000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	170087000
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	153415000
CY2018Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	16377000
CY2017Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	15426000
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	14216000
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9814000
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	200680000
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	178655000
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	200680000
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	178655000
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0
CY2018	nwbo	Stock Issues During Period Values Private Offering StockIssuesDuringPeriodValuesPrivateOffering	23000
CY2017	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	856000
CY2017	nwbo	Stock And Warrants Issued During Period Value Private Placement Net Of Offering Costs StockAndWarrantsIssuedDuringPeriodValuePrivatePlacementNetOfOfferingCosts	983000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.340
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.091
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.040
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.004
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.004
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.107
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	-0.012
CY2018	nwbo	Effective Income Tax Rate Reconciliation Deduction Cancellation Of Shares EffectiveIncomeTaxRateReconciliationDeductionCancellationOfShares	0.000
CY2017	nwbo	Effective Income Tax Rate Reconciliation Deduction Cancellation Of Shares EffectiveIncomeTaxRateReconciliationDeductionCancellationOfShares	0.002
CY2018	nwbo	Effective Income Tax Rate Reconciliation Deduction Cancellation Of Warrants EffectiveIncomeTaxRateReconciliationDeductionCancellationOfWarrants	0.000
CY2017	nwbo	Effective Income Tax Rate Reconciliation Deduction Cancellation Of Warrants EffectiveIncomeTaxRateReconciliationDeductionCancellationOfWarrants	-0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.005
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.086
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.027
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.007
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.179
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-1.070
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.615
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.785
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.000
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-10688000
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	59454000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-9469000
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2911000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1868000
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	924000
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-22025000
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	57467000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0
CY2017	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Accretion Of Redemption Value Of Series B Convertible Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesBConvertibleStock	366000
CY2017	nwbo	Adjustments To Additional Paid In Capital Offering Cost Related To Warrants Exercise AdjustmentsToAdditionalPaidInCapitalOfferingCostRelatedToWarrantsExercise	-229000
CY2017	nwbo	Stock Issued During Period Value Issued For Non Cash Consideration StockIssuedDuringPeriodValueIssuedForNonCashConsideration	0
CY2017	nwbo	Adjustments To Additional Paid In Capital Reclassification Of Warrant Liabilities Related To Cashless Warrants Exercise AdjustmentsToAdditionalPaidInCapitalReclassificationOfWarrantLiabilitiesRelatedToCashlessWarrantsExercise	3054000
CY2017	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	3750000
CY2017	nwbo	Stock Issued During Period Value Extinguishment Of Senior Convertible Notes StockIssuedDuringPeriodValueExtinguishmentOfSeniorConvertibleNotes	2054000
CY2018Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	599300000
CY2018Q4	nwbo	Deferred Tax Assets Tax Credit Carry Forward Unused Research And Development DeferredTaxAssetsTaxCreditCarryForwardUnusedResearchAndDevelopment	16400000
CY2017Q4	nwbo	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Amount EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsAmount	78300000
CY2017Q4	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	78300000
CY2017	nwbo	Adjustments To Additional Paid In Capitaldeemed Dividends Related To Conversion Of Preferred Convertible Stock Into Common Stock AdjustmentsToAdditionalPaidInCapitaldeemedDividendsRelatedToConversionOfPreferredConvertibleStockIntoCommonStock	-624000
CY2018	nwbo	Adjustments To Additional Paid In Capital Deemed Dividends On Conversion Of Series B Convertible Preferred Stock To Common Stock AdjustmentsToAdditionalPaidInCapitalDeemedDividendsOnConversionOfSeriesBConvertiblePreferredStockToCommonStock	-4787000
CY2017Q4	us-gaap	Lessor Operating Lease Variable Lease Payment Terms And Conditions LessorOperatingLeaseVariableLeasePaymentTermsAndConditions	The tenant will undertake at least $1.1 million of repairs and improvements to the building in return for five and a half months of free rent (which began upon execution of the lease and ended on March 24, 2018). Thereafter, the tenant will pay rent at an annualized rate of approximately $1.0 million for the first year, and thereafter rent at an annualized rate of approximately $1.4 million for each year or partial year for the rest of the lease term, plus VAT. The tenant will also pay a proportional share of the common costs and the insurance costs for the overall site.
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	3276000
CY2018	us-gaap	Other Research And Development Expense OtherResearchAndDevelopmentExpense
CY2017	us-gaap	Other Research And Development Expense OtherResearchAndDevelopmentExpense	8395000
CY2018	nwbo	Increase Decrease In Exit Fee Liability Related To Mortgage Loan IncreaseDecreaseInExitFeeLiabilityRelatedToMortgageLoan	120000
CY2017	nwbo	Increase Decrease In Exit Fee Liability Related To Mortgage Loan IncreaseDecreaseInExitFeeLiabilityRelatedToMortgageLoan	0
CY2018	nwbo	Increase Decrease In Renewal Liability Related To Mortgage Loan IncreaseDecreaseInRenewalLiabilityRelatedToMortgageLoan	1464000
CY2017	nwbo	Increase Decrease In Renewal Liability Related To Mortgage Loan IncreaseDecreaseInRenewalLiabilityRelatedToMortgageLoan	0
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	45595000
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0
CY2018	nwbo	Additional Cost Of Leasehold Improvement Related To Uk Construction AdditionalCostOfLeaseholdImprovementRelatedToUkConstruction	193000
CY2017	nwbo	Additional Cost Of Leasehold Improvement Related To Uk Construction AdditionalCostOfLeaseholdImprovementRelatedToUkConstruction	0
CY2012Q3	nwbo	Office Space Taken Under Lease Agreement OfficeSpaceTakenUnderLeaseAgreement	7,097
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	300000
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	300000
CY2017	nwbo	Number Of Warrants Exercised On Cash Less Basis NumberOfWarrantsExercisedOnCashLessBasis	16071
CY2017	nwbo	Weighted Average Exercise Price Warrants Exercised On Cashless Basis WeightedAverageExercisePriceWarrantsExercisedOnCashlessBasis	0.20
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family: "times new roman", serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; text-align: justify; margin-right: 0px;"><div style="font-family: "times new roman", serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;"><div style="font-weight:bold;display:inline;">Use of Estimates</div></div></div><div style="font-family: "times new roman", serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; text-align: justify; margin-right: 0px; background: none;"><div style="white-space: pre-line; font-family: "times new roman", serif; font-size: 10pt; color: rgb(0, 0, 0); background: none; text-decoration: none; letter-spacing: 0px; top: 0px;;display:inline;"> </div></div><div style="font-family: "times new roman", serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; text-align: justify; margin-right: 0px;"><div style="font-family: "times new roman", serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;">In preparing consolidated financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of expenses during the reporting period. Due to inherent uncertainty involved in making estimates, actual results reported in future periods may be affected by changes in these estimates. On an ongoing basis, the Company evaluates its estimates and assumptions. These estimates and assumptions include valuing equity securities in share-based payment arrangements, estimating the fair value of financial instruments recorded as derivative liabilities, useful lives of depreciable assets and whether impairment charges may apply, and the fair value of environmental remediation liabilities.</div></div><table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table>
CY2018	us-gaap	Derivatives Embedded Derivatives DerivativesEmbeddedDerivatives	<div style="font-family: "times new roman", serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; text-align: justify; margin-right: 0px;"><div style="font-family: "times new roman", serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;"><div style="font-weight:bold;display:inline;">Embedded Conversion Features</div></div></div><div style="font-family: "times new roman", serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; text-align: justify; margin-right: 0px; background: none;"><div style="white-space: pre-line; font-family: "times new roman", serif; font-size: 10pt; color: rgb(0, 0, 0); background: none; text-decoration: none; letter-spacing: 0px; top: 0px;;display:inline;"> </div></div><div style="font-family: "times new roman", serif; font-size: 10pt; margin-bottom: 0px; margin-top: 0px; text-align: justify; margin-right: 0px;"><div style="font-family: "times new roman", serif; font-size: 10pt; color: rgb(0, 0, 0); letter-spacing: 0px; top: 0px;;display:inline;">The Company evaluates embedded conversion features within convertible debt to determine whether the embedded conversion feature(s) should be bifurcated from the host instrument and accounted for as a derivative at fair value with changes in fair value recorded in the Statement of Operations.  If the conversion feature does not require recognition of a bifurcated derivative, the convertible debt instrument is evaluated for consideration of any beneficial conversion feature (“BCF”) requiring separate recognition. When the Company record a BCF, the intrinsic value of the BCF is recorded as a debt discount against the face amount of the respective debt instrument (offset to additional paid-in capital) and amortized to interest expense over the life of the debt.</div></div><table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table>
CY2018Q4	us-gaap	Cash Fdic Insured Amount CashFDICInsuredAmount	250000
CY2018	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Estimated Foreiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEstimatedForeitureRate	0
CY2017Q4	us-gaap	Area Of Land AreaOfLand	275000
CY2017Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	479000
CY2016Q1	nwbo	Office Space Taken Under Lease Agreement OfficeSpaceTakenUnderLeaseAgreement	505
CY2018Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	22000000
CY2018	us-gaap	Sale Leaseback Transaction Net Proceeds Investing Activities SaleLeasebackTransactionNetProceedsInvestingActivities	45600000
CY2018Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	8000000
CY2018Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Gross SaleLeasebackTransactionDeferredGainGross	4700000
CY2018	us-gaap	Repayments Of First Mortgage Bond RepaymentsOfFirstMortgageBond	9758000
CY2017	us-gaap	Repayments Of First Mortgage Bond RepaymentsOfFirstMortgageBond	0
CY2018	nwbo	Adjustments To Additional Paid In Capital Beneficial Conversion Feature Of Series A Convertible Preferred Stock AdjustmentsToAdditionalPaidInCapitalBeneficialConversionFeatureOfSeriesAConvertiblePreferredStock	0
CY2017	nwbo	Adjustments To Additional Paid In Capital Beneficial Conversion Feature Of Series A Convertible Preferred Stock AdjustmentsToAdditionalPaidInCapitalBeneficialConversionFeatureOfSeriesAConvertiblePreferredStock	276000
CY2018	nwbo	Adjustments To Additional Paid In Capital Deemed Dividends Related To Accretion Of Redemption Value Of Series A Convertible Stock AdjustmentsToAdditionalPaidInCapitalDeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesAConvertibleStock	0
CY2017	nwbo	Adjustments To Additional Paid In Capital Deemed Dividends Related To Accretion Of Redemption Value Of Series A Convertible Stock AdjustmentsToAdditionalPaidInCapitalDeemedDividendsRelatedToAccretionOfRedemptionValueOfSeriesAConvertibleStock	276000
CY2018	nwbo	Stock Issued During Period Value Conversion Of Convertible Preferred Stock And Existing Warrants StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStockAndExistingWarrants	0
CY2017	nwbo	Stock Issued During Period Value Conversion Of Convertible Preferred Stock And Existing Warrants StockIssuedDuringPeriodValueConversionOfConvertiblePreferredStockAndExistingWarrants	1090000
CY2016Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	10062000
CY2017	nwbo	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Warrant Granted FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisWarrantGranted	41557000
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Issues FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues	4262000
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Issues FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationIssues	-5264000
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales	2162000
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements	3054000
CY2017	nwbo	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements Related To Conversion Of Sharesettled Debt FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlementsRelatedToConversionOfSharesettledDebt	1892000
CY2017	us-gaap	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	2578000
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	46087000
CY2018	nwbo	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements Related To Repayment Of Debt FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlementsRelatedToRepaymentOfDebt	-2049000
CY2018Q4	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Vested ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVested	0.5
CY2018Q4	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpectedToVest	0.5
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage	0.25
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3100000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P4Y
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0.25
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	7900000
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0.25
CY2017Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P5Y
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	16300000
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	1600000
CY2018	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y8M12D
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights	50% of the Options were vested on the grant date, and 50% are vesting over a 24-month period in equal monthly installments, provided that the recipient continues to be employed by the Company. The unvested portions of the Options are subject to accelerated vesting upon (i) a change of effective control of the Company, (ii) the filing of the first Biologics License Application or other application for product approval in any jurisdiction, (iii) completion of any randomized clinical trial that meets its endpoint(s) (Phase II or Phase III), (iv) decision by the Board, in its discretion or (v) the death of the recipient.
CY2018Q4	us-gaap	Sale Leaseback Transaction Net Proceeds Investing Activities SaleLeasebackTransactionNetProceedsInvestingActivities	45595000
CY2018Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	6200000
CY2018Q4	us-gaap	Sale Leaseback Transaction Accumulated Depreciation SaleLeasebackTransactionAccumulatedDepreciation	1397000
CY2018Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Net SaleLeasebackTransactionDeferredGainNet	4748000
CY2018Q4	nwbo	Gain On Sale Of Property In Uk GainOnSaleOfPropertyInUK	3276000
CY2018Q4	us-gaap	Sale Leaseback Transaction Gross Proceeds Investing Activities SaleLeasebackTransactionGrossProceedsInvestingActivities	47200000
CY2018Q4	us-gaap	Proceeds From Sale Of Property Held For Sale ProceedsFromSaleOfPropertyHeldForSale	8000000
CY2018	nwbo	Gain On Sale Of Property GainOnSaleOfProperty	3300000
CY2018Q4	nwbo	Gain On Sale Of Property GainOnSaleOfProperty	3300000
CY2018Q4	nwbo	Sale Lease Back Transaction Lease Term SaleLeaseBackTransactionLeaseTerm	P20Y
CY2018Q4	nwbo	Sale Lease Back Renewal Option Term SaleLeaseBackRenewalOptionTerm	P20Y
CY2017Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	18800000
CY2017Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	0.26
CY2018Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	17435000
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	995000
CY2018Q4	nwbo	Fair Value Of Embedded Conversion Option FairValueOfEmbeddedConversionOption	357000
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	16797000
CY2017Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	31375000
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	2554000
CY2017Q4	nwbo	Fair Value Of Embedded Conversion Option FairValueOfEmbeddedConversionOption	2608000
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	31429000
CY2018Q4	us-gaap	Notes Payable NotesPayable	135000
CY2017Q4	us-gaap	Notes Payable NotesPayable	135000
CY2018Q2	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	5400000
CY2018Q2	nwbo	Warrants Exercise Number WarrantsExerciseNumber	23500000
CY2018Q2	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	0.30
CY2018Q2	nwbo	Warrants Exercise Value WarrantsExerciseValue	11700000
CY2018Q2	us-gaap	Debt Instrument Periodic Payment Interest DebtInstrumentPeriodicPaymentInterest	4200000
CY2018Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	22000
CY2018Q1	us-gaap	Debt Instrument Increase Decrease Other Net DebtInstrumentIncreaseDecreaseOtherNet	30000
CY2017	us-gaap	Debt Instrument Periodic Payment Interest DebtInstrumentPeriodicPaymentInterest	47000
CY2017Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	400000
CY2017Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.1
CY2017	us-gaap	Debt Instrument Term DebtInstrumentTerm	P7D
CY2018	us-gaap	Debt Instrument Term DebtInstrumentTerm	P3Y
CY2018Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.12
CY2018	us-gaap	Repayments Of Debt RepaymentsOfDebt	1000000
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	2000000
CY2018Q4	us-gaap	Debt Instrument Annual Principal Payment DebtInstrumentAnnualPrincipalPayment	5350000
CY2018Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	1012000
CY2018	us-gaap	Debt Instrument Description DebtInstrumentDescription	50% of the principal and accrued interest will be convertible at $0.25 per share, 25% of the principal and accrued interest will be convertible at $0.50 per share and 25% of the principal and accrued interest will be convertible at $1.00 per share.
CY2018Q4	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	400000
CY2017Q4	us-gaap	Debt Instrument Periodic Payment Principal DebtInstrumentPeriodicPaymentPrincipal	2200000
CY2018	us-gaap	Debt Instrument Periodic Payment Interest DebtInstrumentPeriodicPaymentInterest	64000
CY2018Q4	us-gaap	Notes Payable Current NotesPayableCurrent	6362000
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	1374000
CY2018Q4	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Liability EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability	2049000
CY2018Q4	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	675000
CY2018	us-gaap	Interest Expense Other InterestExpenseOther	13000
CY2017	us-gaap	Interest Expense Other InterestExpenseOther	11000
CY2018	us-gaap	Interest Expense Debt InterestExpenseDebt	9871000
CY2017	us-gaap	Interest Expense Debt InterestExpenseDebt	5545000
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	85000
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-12569000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-35794000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-73143000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	0
CY2018	us-gaap	Interest Paid Net InterestPaidNet	22000
CY2018Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	3700000
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	225000
CY2017Q4	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	0.165
CY2017Q3	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	1300000
CY2017Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	0.18
CY2018Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.1
CY2017Q3	nwbo	Stock Issued During Period Shares Issued For Non Cash Consideration1 StockIssuedDuringPeriodSharesIssuedForNonCashConsideration1	6900000
CY2018Q2	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.1
CY2017Q4	nwbo	Shares Issued During Period Shares Upon Exercise Of Warrants SharesIssuedDuringPeriodSharesUponExerciseOfWarrants	231000
CY2017Q4	us-gaap	Warrants Not Settleable In Cash Fair Value Disclosure WarrantsNotSettleableInCashFairValueDisclosure	45000
CY2018	us-gaap	Tax Credit Carryforward Limitations On Use TaxCreditCarryforwardLimitationsOnUse	subject to a utilization limitation of 80% of taxable income.
CY2017Q1	nwbo	Shares Issued During Period Shares Upon Exercise Of Warrants SharesIssuedDuringPeriodSharesUponExerciseOfWarrants	3100000
CY2017Q1	us-gaap	Warrants Not Settleable In Cash Fair Value Disclosure WarrantsNotSettleableInCashFairValueDisclosure	713000
CY2017Q3	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	5500000
CY2017Q3	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	32900000
CY2017Q3	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	7800000
CY2017Q3	nwbo	Class Of Warrants Or Right Number Issued ClassOfWarrantsOrRightNumberIssued	40400000
CY2017Q3	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	0.48
CY2017Q3	nwbo	Class Of Warrants Or Right Value Issued ClassOfWarrantsOrRightValueIssued	4700000
CY2017Q4	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	1000000
CY2017Q4	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	7300000
CY2017Q4	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	1600000
CY2017Q4	nwbo	Class Of Warrants Or Right Number Issued ClassOfWarrantsOrRightNumberIssued	600000
CY2017Q2	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	500000
CY2017Q2	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	3300000
CY2017Q2	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	0.14
CY2017Q2	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	600000
CY2017Q2	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	300000
CY2017Q2	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	3900000
CY2017Q2	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	1600000
CY2017Q2	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	2000000
CY2017Q2	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	11000000
CY2017Q2	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	0.18
CY2017Q2	us-gaap	Common Stock Value Outstanding CommonStockValueOutstanding	1800000
CY2017Q2	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	900000
CY2017Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	2900000
CY2017Q4	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	0.17
CY2017Q4	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	1500000
CY2017Q4	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	0.22
CY2017Q4	nwbo	Class Of Warrant Or Right Warrant Term ClassOfWarrantOrRightWarrantTerm	P2Y
CY2017Q4	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	500000
CY2017Q3	nwbo	Proceeds From Private Offering ProceedsFromPrivateOffering	2600000
CY2017Q3	nwbo	Shares Payable Current SharesPayableCurrent	2600000
CY2018Q4	us-gaap	Land Subject To Ground Leases LandSubjectToGroundLeases	87000
CY2018Q4	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P20Y
CY2018Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P20Y
CY2018Q4	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	600000
CY2017Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	8700000
CY2017Q3	us-gaap	Shares Issued Price Per Share SharesIssuedPricePerShare	0.20
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	5854000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5827000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	5579000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	5505000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	691000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	10920000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	34376000
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	523200000
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	328900000
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	523200000
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	328900000
CY2017Q4	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	37000
CY2017Q4	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	60000
CY2017Q2	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	69000
CY2017Q1	us-gaap	Proceeds From Warrant Exercises ProceedsFromWarrantExercises	31000
CY2017Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	0.26
CY2017Q2	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1	0.33
CY2018Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Gross SaleLeasebackTransactionDeferredGainGross	3300000
CY2018Q4	us-gaap	Sale Leaseback Transaction Description Of Asset S SaleLeasebackTransactionDescriptionOfAssetS	The retention of the Company's ownership of 17 acres of the property, and the lease-back of the 87,000 square foot manufacturing facility.
CY2017Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P10Y
CY2018Q4	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	500000
CY2018	nwbo	Bifurcated Embedded Derivative Fair Value Of Embedded Derivative Liability1 BifurcatedEmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability1	351000
CY2017Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-400000
CY2017Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-700000
CY2016Q4	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P1Y
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Entity Registrant Name EntityRegistrantName	NORTHWEST BIOTHERAPEUTICS INC
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001072379
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	108579000
CY2018	dei	Trading Symbol TradingSymbol	NWBO
CY2019Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	537090275
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	true

Files In Submission

Name	View Source	Status
0001144204-19-017803-index-headers.html	Edgar Link	pending
0001144204-19-017803-index.html	Edgar Link	pending
0001144204-19-017803.txt	Edgar Link	pending
0001144204-19-017803-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
nwbo-20181231.xml	Edgar Link	completed
nwbo-20181231.xsd	Edgar Link	pending
nwbo-20181231_cal.xml	Edgar Link	unprocessable
nwbo-20181231_def.xml	Edgar Link	unprocessable
nwbo-20181231_lab.xml	Edgar Link	unprocessable
nwbo-20181231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
tv517288_10k.htm	Edgar Link	pending
tv517288_ex10-73.htm	Edgar Link	pending
tv517288_ex10-74.htm	Edgar Link	pending
tv517288_ex10-75.htm	Edgar Link	pending
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tv517288_ex21-1.htm	Edgar Link	pending
tv517288_ex23-1.htm	Edgar Link	pending
tv517288_ex31-1.htm	Edgar Link	pending
tv517288_ex32-1.htm	Edgar Link	pending

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$NWBO
NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo

2018 Form 10-K Financial Statement

#000114420419017803 Filed on April 02, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBO NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo

2018 Form 10-K Financial Statement

#000114420419017803 Filed on April 02, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBO
NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo