$NWBO
NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo

$nwbo Overview Financials Valuation SEC Filings Company Website

2014 Q1 Form 10-K Financial Statement

#000114420414020023 Filed on April 01, 2014

Income Statement

Concept	2014 Q1	2013	2012 Q4
Revenue	$0.00	$809.0K	$320.0K
YoY Change	-100.0%	4.79%
Cost Of Revenue	$0.00	$0.00	$0.00
YoY Change
Gross Profit	$0.00	$809.0K	$320.0K
YoY Change	-100.0%	4.79%
Gross Profit Margin		100.0%	100.0%
Selling, General & Admin	$3.690M	$12.36M	$7.520M
YoY Change	49.39%	-21.17%	182.71%
% of Gross Profit		1527.81%	2350.0%
Research & Development	$19.99M	$43.91M	$8.380M
YoY Change	72.17%	51.88%	323.23%
% of Gross Profit		5427.19%	2618.75%
Depreciation & Amortization	$0.00	$10.00K	$0.00
YoY Change		0.0%
% of Gross Profit		1.24%	0.0%
Operating Expenses	$19.99M	$43.91M	$15.90M
YoY Change	72.17%	51.88%	242.67%
Operating Profit	-$23.68M	-$55.47M	-$15.58M
YoY Change	69.84%	26.58%	235.78%
Interest Expense	$122.0K	$842.0K	-$5.840M
YoY Change	-72.89%	-93.74%	284.21%
% of Operating Profit
Other Income/Expense, Net	-$22.36M	-$10.60M	-$9.100M
YoY Change		23.11%	41.97%
Pretax Income	-$46.04M	-$65.79M	-$30.52M
YoY Change	219.94%	-2.27%	142.61%
Income Tax	$0.00	$0.00	$0.00
% Of Pretax Income
Net Earnings	-$46.04M	-$65.79M	-$30.52M
YoY Change	219.86%	-2.27%	142.61%
Net Earnings / Revenue		-8132.14%	-9537.5%
Basic Earnings Per Share
Diluted Earnings Per Share	-$879.0K	-$2.002M	-$1.876M
COMMON SHARES
Basic Shares Outstanding	53.74M shares		13.34M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2014 Q1	2013	2012 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$12.23M	$18.50M	$7.350M
YoY Change	3205.41%	151.7%	36650.0%
Cash & Equivalents	$12.23M	$18.50M	$7.346M
Short-Term Investments
Other Short-Term Assets	$150.0K	$150.0K	$110.0K
YoY Change	275.0%	36.36%	22.22%
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$12.38M	$18.65M	$7.458M
YoY Change	2919.51%	150.0%	6115.0%
LONG-TERM ASSETS
Property, Plant & Equipment	$80.00K	$80.00K	$95.00K
YoY Change	-11.11%	-20.0%	18.75%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$60.00K	$60.00K	$20.00K
YoY Change	200.0%	200.0%	0.0%
Total Long-Term Assets	$130.0K	$130.0K	$112.0K
YoY Change	18.18%	18.18%	24.44%
TOTAL ASSETS
Total Short-Term Assets	$12.38M	$18.65M	$7.458M
Total Long-Term Assets	$130.0K	$130.0K	$112.0K
Total Assets	$12.51M	$18.78M	$7.570M
YoY Change	2305.77%	148.08%	3504.76%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.620M	$8.940M	$8.165M
YoY Change	-49.31%	9.42%	114.3%
Accrued Expenses	$760.0K	$840.0K	$589.0K
YoY Change	-29.63%	42.37%	-79.11%
Deferred Revenue
YoY Change
Short-Term Debt	$930.0K	$930.0K	$930.0K
YoY Change	-30.08%	0.0%
Long-Term Debt Due	$240.0K	$290.0K	$1.060M
YoY Change	-68.83%	-72.64%	-92.22%
Total Short-Term Liabilities	$43.57M	$19.69M	$10.74M
YoY Change	168.29%	83.33%	-78.83%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$1.880M
YoY Change	-100.0%	-100.0%	15.34%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$0.00	$0.00	$1.882M
YoY Change	-100.0%	-100.0%	15.46%
TOTAL LIABILITIES
Total Short-Term Liabilities	$43.57M	$19.69M	$10.74M
Total Long-Term Liabilities	$0.00	$0.00	$1.882M
Total Liabilities	$43.57M	$19.69M	$12.63M
YoY Change	148.12%	55.9%	-75.9%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock			$303.2M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$31.06M	-$910.0K	-$16.07M
YoY Change
Total Liabilities & Shareholders Equity	$12.51M	$18.78M	$7.570M
YoY Change	2305.77%	148.08%	3504.76%

Cashflow Statement

Concept	2014 Q1	2013	2012 Q4
OPERATING ACTIVITIES
Net Income	-$46.04M	-$65.79M	-$30.52M
YoY Change	219.86%	-2.27%	142.61%
Depreciation, Depletion And Amortization	$0.00	$10.00K	$0.00
YoY Change		0.0%
Cash From Operating Activities	-$10.56M	-$37.80M	-$8.240M
YoY Change	49.26%	66.12%	80.7%
INVESTING ACTIVITIES
Capital Expenditures	$0.00	-$1.000K	$0.00
YoY Change		-103.23%	-100.0%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$0.00
YoY Change
Cash From Investing Activities	$0.00	$1.000K	$0.00
YoY Change		-103.23%	-100.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$224.0K	-$48.86M
YoY Change		-451.51%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$4.290M	$48.95M	15.49M
YoY Change	4147.52%	62.38%	434.14%
NET CHANGE
Cash From Operating Activities	-$10.56M	-$37.80M	-8.240M
Cash From Investing Activities	$0.00	$1.000K	0.000
Cash From Financing Activities	$4.290M	$48.95M	15.49M
Net Change In Cash	-$6.269M	$11.15M	7.250M
YoY Change	-10.1%	51.49%	-531.55%
FREE CASH FLOW
Cash From Operating Activities	-$10.56M	-$37.80M	-$8.240M
Capital Expenditures	$0.00	-$1.000K	$0.00
Free Cash Flow	-$10.56M	-$37.80M	-$8.240M
YoY Change	49.26%	65.89%	81.5%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	95000	USD
CY2013Q4	us-gaap	Assets Assets	18784000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	112000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	25000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	18499000	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "> <div style="CLEAR:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif" align="justify"><strong>Use of Estimates</strong></div> <div style="CLEAR:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif" align="justify"><i> </i></div> <div style="CLEAR:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif" align="justify">In preparing 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 equity instruments recorded as derivative liabilities, and estimating the useful lives of depreciable assets and whether impairment charges may apply.</div> </div><table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table>
CY2012Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	1882000	USD
CY2012Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	1882000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	12626000	USD
CY2012Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	11017000	USD
CY2012Q4	us-gaap	Development Stage Enterprise Deficit Accumulated During Development Stage DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage	319098000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	8165000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	589000	USD
CY2012Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	1056000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	10744000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	7346000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	7458000	USD
CY2012Q4	us-gaap	Assets Assets	7570000	USD
CY2013Q4	nwbo	Working Capital Deficit WorkingCapitalDeficit	65800000	USD
CY2013	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	56282000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	-43825000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	147000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	18646000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	83000	USD
CY2012Q4	nwbo	Deposits And Other Noncurrent Assets DepositsAndOtherNoncurrentAssets	17000	USD
CY2013Q4	nwbo	Deposits And Other Noncurrent Assets DepositsAndOtherNoncurrentAssets	55000	USD
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	8937000	USD
CY2013Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	842000	USD
CY2013Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	288000	USD
CY2012Q4	us-gaap	Notes Payable NotesPayable	934000	USD
CY2013Q4	us-gaap	Notes Payable NotesPayable	934000	USD
CY2012Q4	nwbo	Warrant Liability Current WarrantLiabilityCurrent	0	USD
CY2013Q4	nwbo	Warrant Liability Current WarrantLiabilityCurrent	8688000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	19689000	USD
CY2013Q4	us-gaap	Convertible Long Term Notes Payable ConvertibleLongTermNotesPayable	0	USD
CY2013Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	0	USD
CY2013Q4	us-gaap	Liabilities Liabilities	19689000	USD
CY2013Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	8913000	USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	46000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	303190000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	375213000	USD
CY2013Q4	us-gaap	Development Stage Enterprise Deficit Accumulated During Development Stage DevelopmentStageEnterpriseDeficitAccumulatedDuringDevelopmentStage	384887000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-190000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-190000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	-16073000	USD
	nwbo	Issuance Of Common Stock In Connection Conversion Of Notes Payable IssuanceOfCommonStockInConnectionConversionOfNotesPayable	62051000	USD
CY2012	nwbo	Issuance Of Common Stock And Warrants In Connection Conversion Of Accounts Payable IssuanceOfCommonStockAndWarrantsInConnectionConversionOfAccountsPayable	0	USD
CY2013	nwbo	Issuance Of Common Stock And Warrants In Connection Conversion Of Accounts Payable IssuanceOfCommonStockAndWarrantsInConnectionConversionOfAccountsPayable	16968000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	-9818000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7570000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18784000	USD
CY2013Q3	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	6.07
CY2012Q2	nwbo	Government Grant GovernmentGrant	5500000	USD
CY2013	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	11600000	USD
CY2013	nwbo	Percentage Of Funding PercentageOfFunding	0.5	pure
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3203000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1350000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1551000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.56
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y7M6D
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	997000	shares
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y7M17D
CY2012Q4	us-gaap	Accounts Payable Related Parties Current And Noncurrent AccountsPayableRelatedPartiesCurrentAndNoncurrent	3397000	USD
CY2013Q4	us-gaap	Accounts Payable Related Parties Current And Noncurrent AccountsPayableRelatedPartiesCurrentAndNoncurrent	3619000	USD
CY2012Q4	nwbo	Accrued Expenses Related Party AccruedExpensesRelatedParty	28000	USD
CY2013Q4	nwbo	Accrued Expenses Related Party AccruedExpensesRelatedParty	5000	USD
CY2012Q4	nwbo	Convertible Notes Payable Related Parties Current ConvertibleNotesPayableRelatedPartiesCurrent	50000	USD
CY2013Q4	nwbo	Convertible Notes Payable Related Parties Current ConvertibleNotesPayableRelatedPartiesCurrent	50000	USD
CY2012Q4	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2013Q4	us-gaap	Temporary Equity Par Or Stated Value Per Share TemporaryEquityParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	1869770	shares
CY2013Q4	us-gaap	Temporary Equity Shares Issued TemporaryEquitySharesIssued	1444788	shares
CY2012Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	1869770	shares
CY2013Q4	us-gaap	Temporary Equity Shares Outstanding TemporaryEquitySharesOutstanding	1444788	shares
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	40000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	40000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	450000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	450000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	24676058	shares
CY2012Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	14717000	shares
CY2013Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	9075000	shares
CY2012Q1	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	6.24
CY2012	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.49
CY2013Q1	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.06
CY2013	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.69
CY2012Q2	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	2.89
CY2013Q2	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.61
CY2013Q3	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.19
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	45666315	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	24676058	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	45666315	shares
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	100000	USD
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	1400000	USD
CY2013Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	0	USD
CY2013	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y
CY2012Q4	nwbo	Warrant Liability WarrantLiability	0	USD
CY2013Q4	nwbo	Warrant Liability WarrantLiability	8688000	USD
CY2013	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	1157000	USD
CY2012Q4	us-gaap	Other Notes Payable Current OtherNotesPayableCurrent	934000	USD
CY2013Q4	us-gaap	Other Notes Payable Current OtherNotesPayableCurrent	934000	USD
CY2012Q4	nwbo	Other Convertible Notes Payable Current OtherConvertibleNotesPayableCurrent	1006000	USD
CY2013Q4	nwbo	Other Convertible Notes Payable Current OtherConvertibleNotesPayableCurrent	213000	USD
CY2012Q4	nwbo	Convertible Notes Payable Current Related Parties ConvertibleNotesPayableCurrentRelatedParties	50000	USD
CY2013Q4	nwbo	Convertible Notes Payable Current Related Parties ConvertibleNotesPayableCurrentRelatedParties	75000	USD
CY2012Q4	us-gaap	Notes Payable Current NotesPayableCurrent	3872000	USD
CY2013Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1222000	USD
CY2012	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	27800000	USD
CY2013	us-gaap	Debt Conversion Converted Instrument Rate DebtConversionConvertedInstrumentRate	0.12	pure
CY2012	nwbo	Proceeds From Issuance Of Convertible Promissory Note And Warrants Net Of Issuance Costs ProceedsFromIssuanceOfConvertiblePromissoryNoteAndWarrantsNetOfIssuanceCosts	13200000	USD
CY2013	nwbo	Proceeds From Issuance Of Convertible Promissory Note And Warrants Net Of Issuance Costs ProceedsFromIssuanceOfConvertiblePromissoryNoteAndWarrantsNetOfIssuanceCosts	1600000	USD
CY2012	nwbo	Debt Discount Convertible Beneficial Conversion Feature For Convertible Notes And Detachable Warrants DebtDiscountConvertibleBeneficialConversionFeatureForConvertibleNotesAndDetachableWarrants	7900000	USD
CY2013	nwbo	Repayments Of Convertible Notes Payable RepaymentsOfConvertibleNotesPayable	2100000	USD
CY2012	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	7500000	shares
CY2013	us-gaap	Debt Conversion Converted Instrument Shares Issued1 DebtConversionConvertedInstrumentSharesIssued1	5800000	shares
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	14403000	shares
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	21756000	shares
CY2012	us-gaap	Research And Development Arrangement Contract To Perform For Others Costs Incurred Gross ResearchAndDevelopmentArrangementContractToPerformForOthersCostsIncurredGross	3300000	USD
CY2013	us-gaap	Research And Development Arrangement Contract To Perform For Others Costs Incurred Gross ResearchAndDevelopmentArrangementContractToPerformForOthersCostsIncurredGross	3600000	USD
CY2012	nwbo	Research And Development Expense Service Agreement ResearchAndDevelopmentExpenseServiceAgreement	16500000	USD
CY2013	nwbo	Research And Development Expense Service Agreement ResearchAndDevelopmentExpenseServiceAgreement	25400000	USD
CY2013Q3	nwbo	Cash Consideration Per Share CashConsiderationPerShare	4.00
CY2012Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	607000	shares
CY2012	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	17211000	shares
CY2013Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	595000	shares
CY2013	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	20990000	shares
CY2012Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	395000	shares
CY2013Q2	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	3546000	shares
CY2012Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	1492000	shares
CY2013Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	7773000	shares
CY2012Q3	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.49
CY2012Q4	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	3.39
CY2013Q4	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	4.20
CY2012Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	3855000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	60128000	USD
CY2013Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1817000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	77513000	USD
CY2012Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1142000	USD
CY2013Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	12811000	USD
CY2012Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	5212000	USD
CY2013Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	24785000	USD
CY2012Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	49919000	USD
CY2013Q4	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	38101000	USD
CY2012	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	0	USD
CY2013	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	0	USD
	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	580000	USD
CY2012	nwbo	Contract Research And Development From Related Parties ContractResearchAndDevelopmentFromRelatedParties	0	USD
CY2013	nwbo	Contract Research And Development From Related Parties ContractResearchAndDevelopmentFromRelatedParties	0	USD
	nwbo	Contract Research And Development From Related Parties ContractResearchAndDevelopmentFromRelatedParties	1128000	USD
CY2012	nwbo	Research Grants And Other ResearchGrantsAndOther	772000	USD
CY2013	nwbo	Research Grants And Other ResearchGrantsAndOther	809000	USD
	nwbo	Research Grants And Other ResearchGrantsAndOther	2642000	USD
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	772000	USD
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	809000	USD
	us-gaap	Sales Revenue Net SalesRevenueNet	4350000	USD
CY2012	us-gaap	Cost Of Goods Sold CostOfGoodsSold	0	USD
CY2013	us-gaap	Cost Of Goods Sold CostOfGoodsSold	0	USD
	us-gaap	Cost Of Goods Sold CostOfGoodsSold	382000	USD
CY2012	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	28908000	USD
CY2013	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	43906000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	163078000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	15675000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12364000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	103363000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	14000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	12000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2389000	USD
CY2012	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
CY2013	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	-895000	USD
CY2012	nwbo	Asset Impairment Loss And Other Gain Loss AssetImpairmentLossAndOtherGainLoss	0	USD
CY2013	nwbo	Asset Impairment Loss And Other Gain Loss AssetImpairmentLossAndOtherGainLoss	0	USD
	nwbo	Asset Impairment Loss And Other Gain Loss AssetImpairmentLossAndOtherGainLoss	2445000	USD
CY2012	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	44597000	USD
	us-gaap	Operating Costs And Expenses OperatingCostsAndExpenses	272552000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	-57473000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-268202000	USD
CY2012	nwbo	Valuation Of Reclassified Equity Contracts ValuationOfReclassifiedEquityContracts	-491000	USD
CY2013	nwbo	Valuation Of Reclassified Equity Contracts ValuationOfReclassifiedEquityContracts	0	USD
	nwbo	Valuation Of Reclassified Equity Contracts ValuationOfReclassifiedEquityContracts	-16071000	USD
CY2012	us-gaap	Induced Conversion Of Convertible Debt Expense InducedConversionOfConvertibleDebtExpense	9103000	USD
CY2013	us-gaap	Induced Conversion Of Convertible Debt Expense InducedConversionOfConvertibleDebtExpense	10599000	USD
	us-gaap	Induced Conversion Of Convertible Debt Expense InducedConversionOfConvertibleDebtExpense	37936000	USD
CY2012	nwbo	Accretion Of Redeemable Securities AccretionOfRedeemableSecurities	2042000	USD
CY2013	nwbo	Accretion Of Redeemable Securities AccretionOfRedeemableSecurities	31000	USD
	nwbo	Accretion Of Redeemable Securities AccretionOfRedeemableSecurities	2073000	USD
CY2012	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	601000	USD
CY2013	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	1157000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	2540000	USD
CY2012	nwbo	Gain Loss On Sale Of Intellectual Property And Property And Equipment GainLossOnSaleOfIntellectualPropertyAndPropertyAndEquipment	0	USD
CY2013	nwbo	Gain Loss On Sale Of Intellectual Property And Property And Equipment GainLossOnSaleOfIntellectualPropertyAndPropertyAndEquipment	0	USD
	nwbo	Gain Loss On Sale Of Intellectual Property And Property And Equipment GainLossOnSaleOfIntellectualPropertyAndPropertyAndEquipment	3664000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	0	USD
CY2013	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1000	USD
CY2012	us-gaap	Interest Expense InterestExpense	13442000	USD
CY2013	us-gaap	Interest Expense InterestExpense	842000	USD
	us-gaap	Interest Expense InterestExpense	55848000	USD
CY2012	us-gaap	Interest And Other Income InterestAndOtherIncome	0	USD
CY2013	us-gaap	Interest And Other Income InterestAndOtherIncome	0	USD
	us-gaap	Interest And Other Income InterestAndOtherIncome	1707000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-67320000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	-65789000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-340078000	USD
CY2012	nwbo	Issuance Of Common Stock In Connection With Elimination Of Preferred Stock IssuanceOfCommonStockInConnectionWithEliminationOfPreferredStock	0	USD
CY2013	nwbo	Issuance Of Common Stock In Connection With Elimination Of Preferred Stock IssuanceOfCommonStockInConnectionWithEliminationOfPreferredStock	0	USD
	nwbo	Issuance Of Common Stock In Connection With Elimination Of Preferred Stock IssuanceOfCommonStockInConnectionWithEliminationOfPreferredStock	12349000	USD
CY2012	nwbo	Warrants Issued On Preferred Stock WarrantsIssuedOnPreferredStock	0	USD
CY2013	nwbo	Warrants Issued On Preferred Stock WarrantsIssuedOnPreferredStock	0	USD
	nwbo	Warrants Issued On Preferred Stock WarrantsIssuedOnPreferredStock	4664000	USD
CY2012	nwbo	Accretion Of Preferred Stock Mandatory Redemption Obligation AccretionOfPreferredStockMandatoryRedemptionObligation	0	USD
CY2013	nwbo	Accretion Of Preferred Stock Mandatory Redemption Obligation AccretionOfPreferredStockMandatoryRedemptionObligation	0	USD
	nwbo	Accretion Of Preferred Stock Mandatory Redemption Obligation AccretionOfPreferredStockMandatoryRedemptionObligation	1872000	USD
CY2012	nwbo	Preferred Stock Redemption Fee Expenses PreferredStockRedemptionFeeExpenses	0	USD
CY2013	nwbo	Preferred Stock Redemption Fee Expenses PreferredStockRedemptionFeeExpenses	0	USD
	nwbo	Preferred Stock Redemption Fee Expenses PreferredStockRedemptionFeeExpenses	1700000	USD
CY2012	nwbo	Beneficial Conversion Feature Of Preferred Stock BeneficialConversionFeatureOfPreferredStock	0	USD
CY2013	nwbo	Beneficial Conversion Feature Of Preferred Stock BeneficialConversionFeatureOfPreferredStock	0	USD
	nwbo	Beneficial Conversion Feature Of Preferred Stock BeneficialConversionFeatureOfPreferredStock	4274000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-67320000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-65789000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-384887000	USD
CY2012	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-5.72
CY2013	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-2.00
CY2012	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	11759	shares
CY2013	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	32865	shares
CY2011Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	3568000	shares
CY2013Q1	nwbo	Class Of Warrant Or Right Issued In Exchange Of Services ClassOfWarrantOrRightIssuedInExchangeOfServices	109000	shares
CY2013Q2	nwbo	Class Of Warrant Or Right Issued In Connection With Registered Direct Offering ClassOfWarrantOrRightIssuedInConnectionWithRegisteredDirectOffering	1026000	shares
CY2013Q3	nwbo	Class Of Warrant Or Right Issued In Connection With Registered Direct Offering ClassOfWarrantOrRightIssuedInConnectionWithRegisteredDirectOffering	2239000	shares
CY2013Q4	nwbo	Class Of Warrant Or Right Issued In Connection With Registered Direct Offering ClassOfWarrantOrRightIssuedInConnectionWithRegisteredDirectOffering	2815000	shares
CY2013Q2	nwbo	Class Of Warrant Or Right Exercised ClassOfWarrantOrRightExercised	168000	shares
CY2013Q4	nwbo	Class Of Warrant Or Right Exercised ClassOfWarrantOrRightExercised	179000	shares
CY2013Q2	nwbo	Class Of Warrant Or Right Issued To Placement Agent In Connection With Registered Direct Offering ClassOfWarrantOrRightIssuedToPlacementAgentInConnectionWithRegisteredDirectOffering	128000	shares
CY2013Q3	nwbo	Class Of Warrant Or Right Issued In Connection With Conversion Of Cognate Accounts Payable ClassOfWarrantOrRightIssuedInConnectionWithConversionOfCognateAccountsPayable	2116000	shares
CY2013Q4	nwbo	Class Of Warrant Or Right Issued In Connection With Conversion Of Cognate Accounts Payable ClassOfWarrantOrRightIssuedInConnectionWithConversionOfCognateAccountsPayable	240000	shares
CY2013Q3	nwbo	Class Of Warrant Or Right Issued For Extension Of Redeemable Securities ClassOfWarrantOrRightIssuedForExtensionOfRedeemableSecurities	73000	shares
CY2013Q4	nwbo	Class Of Warrant Or Right Issued For Extension Of Redeemable Securities ClassOfWarrantOrRightIssuedForExtensionOfRedeemableSecurities	53000	shares
CY2012	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	267000	shares
CY2013Q1	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	18000	shares
CY2013Q2	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	18000	shares
CY2013Q3	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	19000	shares
CY2013Q4	nwbo	Class Of Warrant Or Right Expired ClassOfWarrantOrRightExpired	441000	shares
CY2012Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	12086000	shares
CY2013Q1	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	12177000	shares
CY2013Q2	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	13145000	shares
CY2013Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	20116000	shares
CY2013Q3	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	17554000	shares
CY2011Q4	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	8.96
CY2013Q1	nwbo	Class Of Warrant Or Right Issued In Exchange Of Services Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInExchangeOfServicesWeightedAverageExercisePrice	6.40
CY2013Q4	nwbo	Class Of Warrant Or Right Issued In Exchange Of Services Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInExchangeOfServicesWeightedAverageExercisePrice	5.00
CY2013Q2	nwbo	Class Of Warrant Or Right Issued To Placement Agent In Connection With Registered Direct Offering In Exchange Of Services Weighted Average Exercise Price ClassOfWarrantOrRightIssuedToPlacementAgentInConnectionWithRegisteredDirectOfferingInExchangeOfServicesWeightedAverageExercisePrice	4.29
CY2013Q2	nwbo	Class Of Warrant Or Right Issued In Connection With Registered Direct Offering Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInConnectionWithRegisteredDirectOfferingWeightedAverageExercisePrice	4.29
CY2013Q3	nwbo	Class Of Warrant Or Right Issued In Connection With Registered Direct Offering Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInConnectionWithRegisteredDirectOfferingWeightedAverageExercisePrice	4.00
CY2013Q4	nwbo	Class Of Warrant Or Right Issued In Connection With Registered Direct Offering Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInConnectionWithRegisteredDirectOfferingWeightedAverageExercisePrice	6.00
CY2013Q2	nwbo	Class Of Warrant Or Right Exercised Weighted Average Exercise Price ClassOfWarrantOrRightExercisedWeightedAverageExercisePrice	5.60
CY2013Q4	nwbo	Class Of Warrant Or Right Exercised Weighted Average Exercise Price ClassOfWarrantOrRightExercisedWeightedAverageExercisePrice	3.35
CY2013Q3	nwbo	Class Of Warrant Or Right Issued In Connection With Conversion Of Debt Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInConnectionWithConversionOfDebtWeightedAverageExercisePrice	4.00
CY2013Q4	nwbo	Class Of Warrant Or Right Issued In Connection With Conversion Of Debt Weighted Average Exercise Price ClassOfWarrantOrRightIssuedInConnectionWithConversionOfDebtWeightedAverageExercisePrice	4.00
CY2013Q3	nwbo	Class Of Warrant Or Right Issued For Extension Of Redeemable Securities Weighted Average Exercise Price ClassOfWarrantOrRightIssuedForExtensionOfRedeemableSecuritiesWeightedAverageExercisePrice	4.00
CY2013Q4	nwbo	Class Of Warrant Or Right Issued For Extension Of Redeemable Securities Weighted Average Exercise Price ClassOfWarrantOrRightIssuedForExtensionOfRedeemableSecuritiesWeightedAverageExercisePrice	6.40
CY2012	nwbo	Class Of Warrant Or Right Expired Weighted Average Exercise Price ClassOfWarrantOrRightExpiredWeightedAverageExercisePrice	7.35
CY2013Q1	nwbo	Class Of Warrant Or Right Expired Weighted Average Exercise Price ClassOfWarrantOrRightExpiredWeightedAverageExercisePrice	15.45
CY2013Q2	nwbo	Class Of Warrant Or Right Expired Weighted Average Exercise Price ClassOfWarrantOrRightExpiredWeightedAverageExercisePrice	12.00
CY2013Q3	nwbo	Class Of Warrant Or Right Expired Weighted Average Exercise Price ClassOfWarrantOrRightExpiredWeightedAverageExercisePrice	12.00
CY2013Q4	nwbo	Class Of Warrant Or Right Expired Weighted Average Exercise Price ClassOfWarrantOrRightExpiredWeightedAverageExercisePrice	11.94
CY2012Q4	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	6.18
CY2013Q1	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	6.82
CY2013Q2	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	6.78
CY2013Q4	nwbo	Class Of Warrant Or Right Outstanding Weighted Average Exercise Price ClassOfWarrantOrRightOutstandingWeightedAverageExercisePrice	5.23
CY2013	nwbo	Class Of Warrant Or Right Exercise Period Of Warrants Or Rights ClassOfWarrantOrRightExercisePeriodOfWarrantsOrRights	P5Y
CY2013Q2	nwbo	Class Of Warrant Or Right Exercise Period Of Warrants Or Rights ClassOfWarrantOrRightExercisePeriodOfWarrantsOrRights	P5Y
CY2013Q4	nwbo	Class Of Warrant Or Right Exercise Period Of Warrants Or Rights ClassOfWarrantOrRightExercisePeriodOfWarrantsOrRights	P5Y
CY2013Q2	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	10000000	USD
CY2013Q4	us-gaap	Proceeds From Issuance Of Private Placement ProceedsFromIssuanceOfPrivatePlacement	27000000	USD
CY2013Q2	nwbo	Common Stock Closing Market Price CommonStockClosingMarketPrice	3.90
CY2013Q3	nwbo	Common Stock Closing Market Price CommonStockClosingMarketPrice	3.46
CY2013Q4	nwbo	Common Stock Closing Market Price CommonStockClosingMarketPrice	4.80
CY2013Q2	nwbo	Number Of Common Stock Warrants Exercisable NumberOfCommonStockWarrantsExercisable	168354	shares
CY2013Q3	nwbo	Number Of Common Stock Warrants Exercisable NumberOfCommonStockWarrantsExercisable	2238806	shares
CY2013Q4	nwbo	Number Of Common Stock Warrants Exercisable NumberOfCommonStockWarrantsExercisable	179094	shares
CY2013Q4	nwbo	Number Of Common Stock Warrants Exercisable NumberOfCommonStockWarrantsExercisable	2815104	shares
CY2013	invest	Investment Warrants Exercise Price InvestmentWarrantsExercisePrice	4.29
CY2013Q2	invest	Investment Warrants Exercise Price InvestmentWarrantsExercisePrice	4.29
CY2013Q2	invest	Investment Warrants Exercise Price InvestmentWarrantsExercisePrice	4.29
CY2013Q4	invest	Investment Warrants Exercise Price InvestmentWarrantsExercisePrice	6.00
CY2013Q4	invest	Investment Warrants Exercise Price InvestmentWarrantsExercisePrice	6.00
CY2013Q2	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	178504	shares
CY2013Q3	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	14326	shares
CY2013Q4	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	141330	shares
CY2013Q3	nwbo	Fair Value Of Common Stock Issued In Exchange For Services FairValueOfCommonStockIssuedInExchangeForServices	100000	USD
CY2013Q4	nwbo	Fair Value Of Common Stock Issued In Exchange For Services FairValueOfCommonStockIssuedInExchangeForServices	700000	USD
CY2013Q3	nwbo	Stock Issued During Period Shares Issued In Exchange For Redemption Period Extension StockIssuedDuringPeriodSharesIssuedInExchangeForRedemptionPeriodExtension	30000	shares
CY2013Q4	nwbo	Stock Issued During Period Shares Issued In Exchange For Redemption Period Extension StockIssuedDuringPeriodSharesIssuedInExchangeForRedemptionPeriodExtension	733104	shares
CY2013Q2	nwbo	Fair Value Of Common Stock Issued In Exchange For Redemption Period Extension FairValueOfCommonStockIssuedInExchangeForRedemptionPeriodExtension	600000	USD
CY2013Q3	nwbo	Fair Value Of Common Stock Issued In Exchange For Redemption Period Extension FairValueOfCommonStockIssuedInExchangeForRedemptionPeriodExtension	100000	USD
CY2013Q4	nwbo	Fair Value Of Common Stock Issued In Exchange For Redemption Period Extension FairValueOfCommonStockIssuedInExchangeForRedemptionPeriodExtension	2700000	USD
CY2013Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	4477612	shares
CY2013Q4	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	5630208	shares
CY2013Q2	nwbo	Warrants Offering Cost WarrantsOfferingCost	800000	USD
CY2013Q4	nwbo	Warrants Offering Cost WarrantsOfferingCost	2000000	USD
CY2012Q4	us-gaap	Temporary Equity Redemption Value TemporaryEquityRedemptionValue	8900000	USD
CY2013Q4	us-gaap	Temporary Equity Redemption Value TemporaryEquityRedemptionValue	1900000	USD
CY2012	nwbo	Redeemable Securities Accretion Expense RedeemableSecuritiesAccretionExpense	2000000	USD
CY2013	nwbo	Debt Converted To Redeemable Common Stock Value DebtConvertedToRedeemableCommonStockValue	4600000	USD
CY2013Q3	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.9804	pure
CY2013Q3	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0172	pure
CY2013Q3	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P5Y
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	40000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	190000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	190000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-67360000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-65979000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-340268000	USD
CY2012	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	14000	USD
CY2013	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	11000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2388000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
CY2013	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	0	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	320000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	14020000	USD
CY2013	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	531000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	44776000	USD
CY2012	nwbo	Accrued Interest Converted To Preferred Stock AccruedInterestConvertedToPreferredStock	0	USD
CY2013	nwbo	Accrued Interest Converted To Preferred Stock AccruedInterestConvertedToPreferredStock	0	USD
	nwbo	Accrued Interest Converted To Preferred Stock AccruedInterestConvertedToPreferredStock	260000	USD
CY2012	nwbo	Accreted Interest On Convertible Promissory Note AccretedInterestOnConvertiblePromissoryNote	0	USD
CY2013	nwbo	Accreted Interest On Convertible Promissory Note AccretedInterestOnConvertiblePromissoryNote	0	USD
	nwbo	Accreted Interest On Convertible Promissory Note AccretedInterestOnConvertiblePromissoryNote	1484000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	3203000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	1350000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	24412000	USD
CY2012	nwbo	Stock And Warrants Issued For Services And Other Expenses StockAndWarrantsIssuedForServicesAndOtherExpenses	3685000	USD
CY2013	nwbo	Stock And Warrants Issued For Services And Other Expenses StockAndWarrantsIssuedForServicesAndOtherExpenses	2341000	USD
	nwbo	Stock And Warrants Issued For Services And Other Expenses StockAndWarrantsIssuedForServicesAndOtherExpenses	26295000	USD
CY2012	nwbo	Inducement Expenses InducementExpenses	9103000	USD
CY2013	nwbo	Inducement Expenses InducementExpenses	10465000	USD
	nwbo	Inducement Expenses InducementExpenses	29983000	USD
CY2012	nwbo	Asset Impairment Loss And Gain Loss On Sale Of Properties AssetImpairmentLossAndGainLossOnSaleOfProperties	0	USD
CY2013	nwbo	Asset Impairment Loss And Gain Loss On Sale Of Properties AssetImpairmentLossAndGainLossOnSaleOfProperties	0	USD
	nwbo	Asset Impairment Loss And Gain Loss On Sale Of Properties AssetImpairmentLossAndGainLossOnSaleOfProperties	-936000	USD
CY2012	nwbo	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	18000	USD
CY2013	nwbo	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	35000	USD
	nwbo	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	-563000	USD
CY2012	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	577000	USD
CY2013	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	766000	USD
	us-gaap	Increase Decrease In Other Accounts Payable And Accrued Liabilities IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities	8489000	USD
CY2012	us-gaap	Increase Decrease In Due To Related Parties Current IncreaseDecreaseInDueToRelatedPartiesCurrent	15075000	USD
CY2013	us-gaap	Increase Decrease In Due To Related Parties Current IncreaseDecreaseInDueToRelatedPartiesCurrent	13754000	USD
	us-gaap	Increase Decrease In Due To Related Parties Current IncreaseDecreaseInDueToRelatedPartiesCurrent	41898000	USD
CY2012	nwbo	Deposits And Other Assets Noncurrent DepositsAndOtherAssetsNoncurrent	1000	USD
CY2013	nwbo	Deposits And Other Assets Noncurrent DepositsAndOtherAssetsNoncurrent	37000	USD
	nwbo	Deposits And Other Assets Noncurrent DepositsAndOtherAssetsNoncurrent	39000	USD
CY2012	nwbo	Accrued Loss On Sublease AccruedLossOnSublease	0	USD
CY2013	nwbo	Accrued Loss On Sublease AccruedLossOnSublease	0	USD
	nwbo	Accrued Loss On Sublease AccruedLossOnSublease	-265000	USD
CY2012	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	0	USD
CY2013	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	0	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	410000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-22754000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-37800000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-177755000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	31000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	-1000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5123000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	258000	USD
CY2012	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	USD
CY2013	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	USD
	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	1816000	USD
CY2012	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0	USD
CY2013	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	0	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	2000000	USD
CY2012	nwbo	Payments For Refund Of Security Deposit PaymentsForRefundOfSecurityDeposit	0	USD
CY2013	nwbo	Payments For Refund Of Security Deposit PaymentsForRefundOfSecurityDeposit	0	USD
	nwbo	Payments For Refund Of Security Deposit PaymentsForRefundOfSecurityDeposit	3000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	1035000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-31000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2087000	USD
CY2012	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	5302000	USD
CY2013	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	0	USD
	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	5302000	USD
CY2012	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	USD
CY2013	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	240000	USD
	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	240000	USD
CY2012	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
CY2013	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	0	USD
	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	7980000	USD
CY2012	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	13181000	USD
CY2013	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	38414000	USD
CY2012	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	0	USD
CY2013	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	1630000	USD
	us-gaap	Increase Decrease In Notes Payable Related Parties IncreaseDecreaseInNotesPayableRelatedParties	12880000	USD
CY2012	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
CY2013	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	1605000	USD
	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	9655000	USD
CY2012	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	2193000	USD
CY2013	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	499000	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	3761000	USD
CY2012	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2013	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	2834000	USD
CY2012	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2013	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	2834000	USD
CY2012	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2013	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	323000	USD
CY2012	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2013	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	420000	USD
CY2012	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	28708000	USD
CY2012	nwbo	Proceeds From Exercise Of Stock Options And Warrants ProceedsFromExerciseOfStockOptionsAndWarrants	0	USD
CY2013	nwbo	Proceeds From Exercise Of Stock Options And Warrants ProceedsFromExerciseOfStockOptionsAndWarrants	595000	USD
	nwbo	Proceeds From Exercise Of Stock Options And Warrants ProceedsFromExerciseOfStockOptionsAndWarrants	823000	USD
CY2012	nwbo	Proceeds From Issuance Of Capital Stock And Warrants ProceedsFromIssuanceOfCapitalStockAndWarrants	13857000	USD
CY2013	nwbo	Proceeds From Issuance Of Capital Stock And Warrants ProceedsFromIssuanceOfCapitalStockAndWarrants	53026000	USD
	nwbo	Proceeds From Issuance Of Capital Stock And Warrants ProceedsFromIssuanceOfCapitalStockAndWarrants	125958000	USD
CY2012	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	90000	USD
CY2012	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2013	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	1251000	USD
CY2012	nwbo	Preferred Stock Redemption Fee PreferredStockRedemptionFee	0	USD
CY2013	nwbo	Preferred Stock Redemption Fee PreferredStockRedemptionFee	0	USD
	nwbo	Preferred Stock Redemption Fee PreferredStockRedemptionFee	1700000	USD
CY2012	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2013	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3955000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4274000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	30147000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	48952000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	198531000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-40000	USD
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	0	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-190000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	7322000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	11153000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	18499000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	24000	USD
CY1996Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	0	USD
CY2012	us-gaap	Interest Paid InterestPaid	0	USD
CY2013	us-gaap	Interest Paid InterestPaid	0	USD
	us-gaap	Interest Paid InterestPaid	1879000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	0	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	0	USD
	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	285000	USD
CY2012	nwbo	Issuance Of Common Stock In Connection Conversion Of Notes Payable IssuanceOfCommonStockInConnectionConversionOfNotesPayable	40127000	USD
CY2013	nwbo	Issuance Of Common Stock In Connection Conversion Of Notes Payable IssuanceOfCommonStockInConnectionConversionOfNotesPayable	2869000	USD
	nwbo	Issuance Of Common Stock And Warrants In Connection Conversion Of Accounts Payable IssuanceOfCommonStockAndWarrantsInConnectionConversionOfAccountsPayable	16968000	USD
CY2012	nwbo	Issuance Of Common Stock In Connection Conversion Of Notes Payable And Accrued Interest IssuanceOfCommonStockInConnectionConversionOfNotesPayableAndAccruedInterest	3673000	USD
CY2013	nwbo	Issuance Of Common Stock In Connection Conversion Of Notes Payable And Accrued Interest IssuanceOfCommonStockInConnectionConversionOfNotesPayableAndAccruedInterest	0	USD
	nwbo	Issuance Of Common Stock In Connection Conversion Of Notes Payable And Accrued Interest IssuanceOfCommonStockInConnectionConversionOfNotesPayableAndAccruedInterest	3673000	USD
CY2012	nwbo	Liability For Reclassified Equity Contracts LiabilityForReclassifiedEquityContracts	29412000	USD
CY2013	nwbo	Liability For Reclassified Equity Contracts LiabilityForReclassifiedEquityContracts	0	USD
	nwbo	Liability For Reclassified Equity Contracts LiabilityForReclassifiedEquityContracts	41253000	USD
CY2012	nwbo	Debt Discount On Promissory Notes DebtDiscountOnPromissoryNotes	7913000	USD
CY2013	nwbo	Debt Discount On Promissory Notes DebtDiscountOnPromissoryNotes	0	USD
	nwbo	Debt Discount On Promissory Notes DebtDiscountOnPromissoryNotes	27414000	USD
CY2012	nwbo	Issuance Of Preferred Stock Warrants In Connection With Lease Agreement IssuanceOfPreferredStockWarrantsInConnectionWithLeaseAgreement	0	USD
CY2013	nwbo	Issuance Of Preferred Stock Warrants In Connection With Lease Agreement IssuanceOfPreferredStockWarrantsInConnectionWithLeaseAgreement	0	USD
	nwbo	Issuance Of Preferred Stock Warrants In Connection With Lease Agreement IssuanceOfPreferredStockWarrantsInConnectionWithLeaseAgreement	43000	USD
CY2012	nwbo	Issuance Of Common Stock To Settle Accounts Payable IssuanceOfCommonStockToSettleAccountsPayable	0	USD
CY2013	nwbo	Issuance Of Common Stock To Settle Accounts Payable IssuanceOfCommonStockToSettleAccountsPayable	0	USD
	nwbo	Issuance Of Common Stock To Settle Accounts Payable IssuanceOfCommonStockToSettleAccountsPayable	4000	USD
CY2012	nwbo	Liability For And Issuance Of Common Stock And Warrants LiabilityForAndIssuanceOfCommonStockAndWarrants	0	USD
CY2013	nwbo	Liability For And Issuance Of Common Stock And Warrants LiabilityForAndIssuanceOfCommonStockAndWarrants	0	USD
	nwbo	Liability For And Issuance Of Common Stock And Warrants LiabilityForAndIssuanceOfCommonStockAndWarrants	840000	USD
CY2012	nwbo	Issuance Of Common Stock To Landlord IssuanceOfCommonStockToLandlord	0	USD
CY2013	nwbo	Issuance Of Common Stock To Landlord IssuanceOfCommonStockToLandlord	0	USD
	nwbo	Issuance Of Common Stock To Landlord IssuanceOfCommonStockToLandlord	35000	USD
CY2012	nwbo	Deferred Compensation On Issuance Of Stock Options And Restricted Stock Grants DeferredCompensationOnIssuanceOfStockOptionsAndRestrictedStockGrants	0	USD
CY2013	nwbo	Deferred Compensation On Issuance Of Stock Options And Restricted Stock Grants DeferredCompensationOnIssuanceOfStockOptionsAndRestrictedStockGrants	0	USD
	nwbo	Deferred Compensation On Issuance Of Stock Options And Restricted Stock Grants DeferredCompensationOnIssuanceOfStockOptionsAndRestrictedStockGrants	759000	USD
CY2012	nwbo	Cancellation Of Options And Restricted Stock CancellationOfOptionsAndRestrictedStock	0	USD
CY2013	nwbo	Cancellation Of Options And Restricted Stock CancellationOfOptionsAndRestrictedStock	0	USD
	nwbo	Cancellation Of Options And Restricted Stock CancellationOfOptionsAndRestrictedStock	849000	USD
CY2012	nwbo	Financing Of Prepaid Insurance Through Note Payable FinancingOfPrepaidInsuranceThroughNotePayable	0	USD
CY2013	nwbo	Financing Of Prepaid Insurance Through Note Payable FinancingOfPrepaidInsuranceThroughNotePayable	0	USD
	nwbo	Financing Of Prepaid Insurance Through Note Payable FinancingOfPrepaidInsuranceThroughNotePayable	491000	USD
CY2012	nwbo	Stock Subscription Receivable StockSubscriptionReceivable	0	USD
CY2013	nwbo	Stock Subscription Receivable StockSubscriptionReceivable	0	USD
	nwbo	Stock Subscription Receivable StockSubscriptionReceivable	480000	USD
CY2012	nwbo	Conversion Of Debt To Accounts Payable ConversionOfDebtToAccountsPayable	1428000	USD
CY2013	nwbo	Conversion Of Debt To Accounts Payable ConversionOfDebtToAccountsPayable	0	USD
	nwbo	Conversion Of Debt To Accounts Payable ConversionOfDebtToAccountsPayable	1428000	USD
CY2012	nwbo	Conversion Of Convertible Promissory Notes And Accrued Interest To Stock ConversionOfConvertiblePromissoryNotesAndAccruedInterestToStock	0	USD
	nwbo	Conversion Of Convertible Promissory Notes And Accrued Interest To Stock ConversionOfConvertiblePromissoryNotesAndAccruedInterestToStock	269000	USD
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Trading Symbol TradingSymbol	NWBO
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	53738774	shares
CY2013	dei	Entity Registrant Name EntityRegistrantName	NORTHWEST BIOTHERAPEUTICS INC
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001072379
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Smaller Reporting Company
CY2013Q2	dei	Entity Public Float EntityPublicFloat	64962452	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	137000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	148000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0227	pure
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	1.935	pure
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0	pure
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	232000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	231000	USD
CY2011Q4	nwbo	Reclassified Equity Contracts Shares ReclassifiedEquityContractsShares	6800000	shares
CY2012Q4	nwbo	Reclassified Equity Contracts Shares ReclassifiedEquityContractsShares	7000000	shares
CY2012	nwbo	Gain On Increase Of Authorised Common Share GainOnIncreaseOfAuthorisedCommonShare	500000	USD
CY2012	nwbo	Liability Reclassified As Additional Paid In Capital LiabilityReclassifiedAsAdditionalPaidInCapital	30100000	USD
CY2013Q4	us-gaap	Minimum Lease Payments Sale Leaseback Transactions Within One Year MinimumLeasePaymentsSaleLeasebackTransactionsWithinOneYear	234000	USD
CY2013Q4	us-gaap	Minimum Lease Payments Sale Leaseback Transactions Within Two Years MinimumLeasePaymentsSaleLeasebackTransactionsWithinTwoYears	300000	USD
CY2013Q4	us-gaap	Minimum Lease Payments Sale Leaseback Transactions Within Three Years MinimumLeasePaymentsSaleLeasebackTransactionsWithinThreeYears	308000	USD
CY2013Q4	us-gaap	Minimum Lease Payments Sale Leaseback Transactions Within Four Years MinimumLeasePaymentsSaleLeasebackTransactionsWithinFourYears	318000	USD
CY2013Q4	us-gaap	Minimum Lease Payments Sale Leaseback Transactions Thereafter MinimumLeasePaymentsSaleLeasebackTransactionsThereafter	81000	USD
CY2013Q4	us-gaap	Minimum Lease Payments Sale Leaseback Transactions MinimumLeasePaymentsSaleLeasebackTransactions	1241000	USD
CY2012Q3	nwbo	Office Space Taken Under Lease Agreement OfficeSpaceTakenUnderLeaseAgreement	7,097 square feet
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	200000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	200000	USD
CY2013Q4	nwbo	Deferred Tax Asset Operating Loss Carry Forward DeferredTaxAssetOperatingLossCarryForward	251000000	USD
CY2013Q4	nwbo	Deferred Tax Assets Tax Credit Carry Forward Unused Research And Development DeferredTaxAssetsTaxCreditCarryForwardUnusedResearchAndDevelopment	4000000	USD
CY2013	nwbo	Percentage Of Cumulative Change In Stock Ownership PercentageOfCumulativeChangeInStockOwnership	0.5	pure
CY2011Q4	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.95	pure
CY2011Q4	us-gaap	Minority Interest Ownership Percentage By Noncontrolling Owners MinorityInterestOwnershipPercentageByNoncontrollingOwners	0.05	pure
CY2012	nwbo	Stock Issued Value Not Subject To Redemption StockIssuedValueNotSubjectToRedemption	0	USD
CY2013	nwbo	Stock Issued Value Not Subject To Redemption StockIssuedValueNotSubjectToRedemption	1864000	USD
	nwbo	Stock Issued Value Not Subject To Redemption StockIssuedValueNotSubjectToRedemption	1864000	USD
CY2012	nwbo	Reclassification Of Warrants To Warrants Liability ReclassificationOfWarrantsToWarrantsLiability	0	USD
CY2013	nwbo	Reclassification Of Warrants To Warrants Liability ReclassificationOfWarrantsToWarrantsLiability	217000	USD
	nwbo	Reclassification Of Warrants To Warrants Liability ReclassificationOfWarrantsToWarrantsLiability	217000	USD
CY2013Q4	nwbo	Number Of Warrants Warrants Issued In Exchange For Services NumberOfWarrantsWarrantsIssuedInExchangeForServices	74000	shares
CY2005Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	32500000	shares
CY2007	us-gaap	Conversion Of Stock Shares Issued1 ConversionOfStockSharesIssued1	938250	shares
CY1996Q1	us-gaap	Stockholders Equity StockholdersEquity	0	USD
CY2007	nwbo	Stock Issued During Period Value Reverse Stock Splits StockIssuedDuringPeriodValueReverseStockSplits	0	USD
CY1997	us-gaap	Accretion Expense AccretionExpense	275000	USD
CY1998	us-gaap	Accretion Expense AccretionExpense	329000	USD
CY1999	us-gaap	Accretion Expense AccretionExpense	354000	USD
	us-gaap	Accretion Expense AccretionExpense	106000	USD
CY1997	us-gaap	Net Income Loss NetIncomeLoss	-2560000	USD
CY1998	us-gaap	Net Income Loss NetIncomeLoss	-4719000	USD
CY1999	us-gaap	Net Income Loss NetIncomeLoss	-5609000	USD
CY2000	us-gaap	Net Income Loss NetIncomeLoss	-12779000	USD
CY2001	us-gaap	Net Income Loss NetIncomeLoss	-10940000	USD
CY2002	us-gaap	Net Income Loss NetIncomeLoss	-12804000	USD
CY2003	us-gaap	Net Income Loss NetIncomeLoss	-5752000	USD
CY2004	us-gaap	Net Income Loss NetIncomeLoss	-8508000	USD
CY2005	us-gaap	Net Income Loss NetIncomeLoss	-9937000	USD
CY2006	us-gaap	Net Income Loss NetIncomeLoss	-1395000	USD
CY2007	us-gaap	Net Income Loss NetIncomeLoss	-21247000	USD
CY2008	us-gaap	Net Income Loss NetIncomeLoss	-22331000	USD
CY2009	us-gaap	Net Income Loss NetIncomeLoss	-26954000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	-27368000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	-32830000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-1233000	USD
CY1997Q4	us-gaap	Stockholders Equity StockholdersEquity	-4174000	USD
CY1998Q4	us-gaap	Stockholders Equity StockholdersEquity	-9222000	USD
CY1999Q4	us-gaap	Stockholders Equity StockholdersEquity	-14791000	USD
CY2000Q4	us-gaap	Stockholders Equity StockholdersEquity	-22516000	USD
CY2001Q4	us-gaap	Stockholders Equity StockholdersEquity	16934000	USD
CY2002Q4	us-gaap	Stockholders Equity StockholdersEquity	4875000	USD
CY2003Q4	us-gaap	Stockholders Equity StockholdersEquity	15000	USD
CY2004Q4	us-gaap	Stockholders Equity StockholdersEquity	-5217000	USD
CY2005Q4	us-gaap	Stockholders Equity StockholdersEquity	-11418000	USD
CY2006Q4	us-gaap	Stockholders Equity StockholdersEquity	-5949000	USD
CY2007Q4	us-gaap	Stockholders Equity StockholdersEquity	5807000	USD
CY2008Q4	us-gaap	Stockholders Equity StockholdersEquity	-12300000	USD
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	-20686000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	-27684000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	-52173000	USD
CY1996Q4	us-gaap	Stockholders Equity StockholdersEquity	-1339000	USD
CY2013Q4	nwbo	Fair Value Of Common Stock Issued In Exchange Of Excise Of Warrants FairValueOfCommonStockIssuedInExchangeOfExciseOfWarrants	600000	USD
CY1998	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY1999	nwbo	Adjustments To Additional Paidin Capital Warrant Issued For Services AdjustmentsToAdditionalPaidinCapitalWarrantIssuedForServices	394000	USD
CY2000	nwbo	Adjustments To Additional Paidin Capital Warrant Issued For Services AdjustmentsToAdditionalPaidinCapitalWarrantIssuedForServices	368000	USD
CY2001	nwbo	Adjustments To Additional Paidin Capital Warrant Issued For Services AdjustmentsToAdditionalPaidinCapitalWarrantIssuedForServices	2287000	USD
CY2009	nwbo	Adjustments To Additional Paidin Capital Warrant Issued For Services AdjustmentsToAdditionalPaidinCapitalWarrantIssuedForServices	1645000	USD
CY2000	nwbo	Adjustments To Additional Paidin Capital Series C Preferred Stock Warrant Issued AdjustmentsToAdditionalPaidinCapitalSeriesCPreferredStockWarrantIssued	43000	USD
CY2000	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1000	USD
CY2001	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	408000	USD
CY2002	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	18000	USD
CY2003	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2005	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4000	USD
CY2006	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	9000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	595000	USD
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.56
CY2000	us-gaap	Stock Issued During Period Value Purchase Of Assets StockIssuedDuringPeriodValuePurchaseOfAssets	4000	USD
CY2008	us-gaap	Stock Issued During Period Value Purchase Of Assets StockIssuedDuringPeriodValuePurchaseOfAssets	225000	USD
CY2000	nwbo	Adjustments To Additional Paidin Capital Series D Preferred Stock Warrant Issued AdjustmentsToAdditionalPaidinCapitalSeriesDPreferredStockWarrantIssued	4039000	USD
CY2000	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	1026000	USD
CY2001	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	456000	USD
CY2003	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	114000	USD
CY2004	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	1156000	USD
CY2005	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	1172000	USD
CY2006	us-gaap	Adjustments To Additional Paid In Capital Convertible Debt With Conversion Feature AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature	64000	USD
CY2000	us-gaap	Stock Granted During Period Value Sharebased Compensation Forfeited StockGrantedDuringPeriodValueSharebasedCompensationForfeited	0	USD
CY2000	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	-430000	USD
CY2001	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	-379000	USD
CY2001	nwbo	Adjustments To Additional Paid In Capital Preferred Stock Beneficial Conversion Feature AdjustmentsToAdditionalPaidInCapitalPreferredStockBeneficialConversionFeature	0	USD
CY2001	us-gaap	Stock Issued During Period Value Issued For Cash StockIssuedDuringPeriodValueIssuedForCash	17155000	USD
CY2001	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	31579000	USD
CY2001	nwbo	Preferred Stock Redemption Fees PreferredStockRedemptionFees	-1700000	USD
CY2001	nwbo	Adjustment To Additional Paid In Capital Options To Non Employees AdjustmentToAdditionalPaidInCapitalOptionsToNonEmployees	45000	USD
CY2002	nwbo	Adjustment To Additional Paid In Capital Options To Non Employees AdjustmentToAdditionalPaidInCapitalOptionsToNonEmployees	57000	USD
CY2005	nwbo	Adjustment To Additional Paid In Capital Options To Non Employees AdjustmentToAdditionalPaidInCapitalOptionsToNonEmployees	3000	USD
CY2001	nwbo	Amortization Of Deferred Compensation AmortizationOfDeferredCompensation	314000	USD
CY2002	nwbo	Amortization Of Deferred Compensation AmortizationOfDeferredCompensation	350000	USD
CY2003	nwbo	Amortization Of Deferred Compensation AmortizationOfDeferredCompensation	240000	USD
CY2004	nwbo	Amortization Of Deferred Compensation AmortizationOfDeferredCompensation	41000	USD
CY2005	nwbo	Amortization Of Deferred Compensation AmortizationOfDeferredCompensation	7000	USD
CY2002	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2002	nwbo	Issuance Of Unregistered Common Stock IssuanceOfUnregisteredCommonStock	200000	USD
CY2002	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	6000	USD
CY2004	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	0	USD
CY2003	nwbo	Stock Issued During Period Value New Issues One StockIssuedDuringPeriodValueNewIssuesOne	200000	USD
CY2002	us-gaap	Share Based Goods And Nonemployee Services Transaction Stockholders Equity ShareBasedGoodsAndNonemployeeServicesTransactionStockholdersEquity	34000	USD
CY2004	nwbo	Stock Issued During Period Value Employee Stock Options Forfeitures StockIssuedDuringPeriodValueEmployeeStockOptionsForfeitures	0	USD
CY2002	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	0	USD
CY2002	nwbo	Adjustments To Additional Paid In Capital Warrant Issued One AdjustmentsToAdditionalPaidInCapitalWarrantIssuedOne	80000	USD
CY2003	nwbo	Adjustments To Additional Paid In Capital Warrant Issued One AdjustmentsToAdditionalPaidInCapitalWarrantIssuedOne	80000	USD
CY2003	nwbo	Stock Issued During Period Value New Issues Two StockIssuedDuringPeriodValueNewIssuesTwo	35000	USD
CY2003	nwbo	Adjustment To Additional Paid In Capital Stock Based Compensation To Non Employees AdjustmentToAdditionalPaidInCapitalStockBasedCompensationToNonEmployees	2000	USD
CY2005	nwbo	Stock Issued During Period Value New Issues Three StockIssuedDuringPeriodValueNewIssuesThree	1276000	USD
CY2004	nwbo	Adjustment To Additional Paid In Capital Warrant Valuation AdjustmentToAdditionalPaidInCapitalWarrantValuation	368000	USD
CY2005	nwbo	Adjustment To Additional Paid In Capital Warrant Liability AdjustmentToAdditionalPaidInCapitalWarrantLiability	-604000	USD
CY2006	nwbo	Adjustments To Additional Paid In Capital Warrant Issued Toi Nvestment Bankers AdjustmentsToAdditionalPaidInCapitalWarrantIssuedToiNvestmentBankers	395000	USD
CY2006	nwbo	Stock Issued During Period Value Conversion Of Notes Payable One StockIssuedDuringPeriodValueConversionOfNotesPayableOne	7707000	USD
CY2006	nwbo	Stock Issued During Period Value Conversion Of Notes Payable Two StockIssuedDuringPeriodValueConversionOfNotesPayableTwo	269000	USD
CY2006	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	19000	USD
CY2006	nwbo	Adjustment To Additional Paid In Capital Warrant Liability AdjustmentToAdditionalPaidInCapitalWarrantLiability	-6523000	USD
CY2007	nwbo	Stock Issued During Period Value Conversion Of Convertible Securities One StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesOne	0	USD
CY2007	nwbo	Stock Issued During Period Value Conversion Of Convertible Securities Two StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesTwo	0	USD
CY2007	nwbo	Adjustments To Additional Paid In Capital Series Preferred Stock Warrant Issued AdjustmentsToAdditionalPaidInCapitalSeriesPreferredStockWarrantIssued	0	USD
CY2007	nwbo	Adjustments To Additional Paid In Capital Series Preferred Stock Dividend Warrant Issued AdjustmentsToAdditionalPaidInCapitalSeriesPreferredStockDividendWarrantIssued	0	USD
CY2007	nwbo	Stock Issued During Period Value Issued For Non Cash Considerations Two StockIssuedDuringPeriodValueIssuedForNonCashConsiderationsTwo	0	USD
CY2007	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2679000	USD
CY2008	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3001000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2004000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8445000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3203000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1350000	USD
CY2007	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-4000	USD
CY2008	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-20000	USD
CY2009	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-25000	USD
CY2010	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-104000	USD
CY2011	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	3000	USD
CY2012	us-gaap	Cumulative Translation Adjustment Net Of Tax Period Increase Decrease CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-40000	USD
CY2008	us-gaap	Stock Issued During Period Value Issued For Noncash Considerations StockIssuedDuringPeriodValueIssuedForNoncashConsiderations	1000	USD
CY2009	us-gaap	Stock Issued During Period Value Issued For Noncash Considerations StockIssuedDuringPeriodValueIssuedForNoncashConsiderations	0	USD
CY2009	nwbo	Stock Issued During Period Value Issued For Non Cash Considerations Two StockIssuedDuringPeriodValueIssuedForNonCashConsiderationsTwo	0	USD
CY2009	nwbo	Stock Issued During Period Value Private Placement Net Of Offering Costs StockIssuedDuringPeriodValuePrivatePlacementNetOfOfferingCosts	1393000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2618000	USD
CY2009	us-gaap	Debt Instrument Convertible Beneficial Conversion Feature DebtInstrumentConvertibleBeneficialConversionFeature	2578000	USD
CY2009	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	2919000	USD
CY2009	nwbo	Debt Conversion Converted Instrument Value DebtConversionConvertedInstrumentValue	112000	USD
CY2009	nwbo	Stock Issued During Period Value Loan Conversion And Inducement StockIssuedDuringPeriodValueLoanConversionAndInducement	7331000	USD
CY2010	nwbo	Stock Issued During Period Value Loan Conversion And Inducement StockIssuedDuringPeriodValueLoanConversionAndInducement	6412000	USD
CY2012	nwbo	Stock Issued During Period Value Loan Conversion And Inducement StockIssuedDuringPeriodValueLoanConversionAndInducement	34327000	USD
CY2010	us-gaap	Debt Instrument Convertible Beneficial Conversion Feature DebtInstrumentConvertibleBeneficialConversionFeature	3254000	USD
CY2011	us-gaap	Debt Instrument Convertible Beneficial Conversion Feature DebtInstrumentConvertibleBeneficialConversionFeature	4267000	USD
CY2012	us-gaap	Debt Instrument Convertible Beneficial Conversion Feature DebtInstrumentConvertibleBeneficialConversionFeature	7885000	USD
CY2011	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	5377000	USD
CY2010	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	2248000	USD
CY2012	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	3685000	USD
CY2013	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	2341000	USD
CY2011	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	797000	USD
CY2011	nwbo	Stock Issued During Period Value Private Placement Net Of Offering Costs StockIssuedDuringPeriodValuePrivatePlacementNetOfOfferingCosts	5501000	USD
CY2010	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	2628000	USD
CY2010	nwbo	Stock Issued During Period Value Private Placement Net Of Offering Costs StockIssuedDuringPeriodValuePrivatePlacementNetOfOfferingCosts	3838000	USD
CY2011	nwbo	Stock Issued During Period Value Loan Conversion And Inducement StockIssuedDuringPeriodValueLoanConversionAndInducement	21774000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt Subsequent Adjustments AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments	-38723000	USD
CY2011	nwbo	Adjustments To Additional Paid In Capital Embedded Derivative Liabilities Reclassification Adjustments AdjustmentsToAdditionalPaidInCapitalEmbeddedDerivativeLiabilitiesReclassificationAdjustments	900000	USD
CY2012	nwbo	Stock And Warrants Value Issued For Cash StockAndWarrantsValueIssuedForCash	13922000	USD
CY2012	nwbo	Reclassification Of Equity Instruments ReclassificationOfEquityInstruments	29412000	USD
CY2012	nwbo	Stock And Warrants Value Issued For Accounts Payable And Accrued Expenses StockAndWarrantsValueIssuedForAccountsPayableAndAccruedExpenses	8338000	USD
CY2013	nwbo	Stock And Warrants Value Issued For Cash StockAndWarrantsValueIssuedForCash	53026000	USD
CY2000	nwbo	Issue Price Per Share For License Rights IssuePricePerShareForLicenseRights	0.85
CY2001	nwbo	Stock Offering Cost StockOfferingCost	2845000	USD
CY2006	nwbo	Stock Offering Cost StockOfferingCost	837000	USD
CY2007	nwbo	Stock Offering Cost StockOfferingCost	3965000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1551000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0
CY2013	nwbo	Share Based Compensation Arrangements B Yshare Based Payment Award Options Expired Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementsBYshareBasedPaymentAwardOptionsExpiredWeightedAverageGrantDateFairValue	0
CY2013	nwbo	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeited Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeitedWeightedAverageGrantDateFairValue	0
CY2013	nwbo	Share Based Compensation Arrangement By Share Based Ayment Award Options Outstanding Intrinsic Value Opening ShareBasedCompensationArrangementByShareBasedAymentAwardOptionsOutstandingIntrinsicValueOpening	0
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValue	0
CY2013	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Expired In Period Grant Date Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodGrantDateIntrinsicValue	0
CY2013	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited In Period Grant Date Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodGrantDateIntrinsicValue	0
CY2013	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Closing ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValueClosing	0
CY2012	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Opening Balance ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValueOpeningBalance	10.56
CY2013	nwbo	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 At End SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2AtEnd	P4Y6M22D
CY2000	nwbo	Stock And Warrants Value Issued In Conjunction With Promissory Note StockAndWarrantsValueIssuedInConjunctionWithPromissoryNote	3000	USD
CY2001	nwbo	Series D Preferred Stock Warrants Value Issued In Conjunction With Refinancing Notes Payable SeriesDPreferredStockWarrantsValueIssuedInConjunctionWithRefinancingNotesPayable	225000	USD
CY2003	nwbo	Stock And Warrants Value Issued For Promissory Note Conversion StockAndWarrantsValueIssuedForPromissoryNoteConversion	221000	USD
CY2004	nwbo	Stock And Warrants Value Issued For Promissory Note Conversion StockAndWarrantsValueIssuedForPromissoryNoteConversion	1711000	USD
CY2005	nwbo	Stock And Warrants Value Issued For Promissory Note Conversion StockAndWarrantsValueIssuedForPromissoryNoteConversion	1878000	USD
CY2006	nwbo	Stock And Warrants Value Issued For Promissory Note Conversion StockAndWarrantsValueIssuedForPromissoryNoteConversion	236000	USD
CY2006	nwbo	Common Stock Value Issued To Pipe Investors CommonStockValueIssuedToPipeInvestors	4688000	USD
CY2006	nwbo	Cash Less Exercise Of Stock Options And Warrants Value CashLessExerciseOfStockOptionsAndWarrantsValue	0	USD
CY2007	nwbo	Series And Series1 Preferred Stock Dividend SeriesAndSeries1PreferredStockDividend	-1251000	USD
CY2007	nwbo	Adjustments To Additional Paid In Capital Warrant Remeasurement Convertible Promissory Notes AdjustmentsToAdditionalPaidInCapitalWarrantRemeasurementConvertiblePromissoryNotes	4495000	USD
CY2007	nwbo	Adjustments To Additional Paid In Capital Warrant Benefical Conversion Convertiblepromissory Notes AdjustmentsToAdditionalPaidInCapitalWarrantBeneficalConversionConvertiblepromissoryNotes	1198000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	90000	USD
CY2013	nwbo	Stock And Warrants Value Issued For Redeemable Security Extension StockAndWarrantsValueIssuedForRedeemableSecurityExtension	2804000	USD
CY2013	nwbo	Warrants To Warrants Liability WarrantsToWarrantsLiability	-217000	USD
CY2013	nwbo	Conversion Of Accounts Payable Value Issue ConversionOfAccountsPayableValueIssue	16969000	USD
CY2013	nwbo	Reclassification Common Par To Additional Paid In Capital ReclassificationCommonParToAdditionalPaidInCapital	0	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	3955000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	10.59
CY2000Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.85
CY2001	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	2845	USD
CY2006	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	837	USD
CY2007	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	3965	USD
CY2007	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	25886000	USD
CY2008	nwbo	Issuance Of Warrants With Promissory Notes IssuanceOfWarrantsWithPromissoryNotes	1017000	USD
CY2012	nwbo	Stock And Warrants Issued For Accrued Interest And Interest Expenses Value StockAndWarrantsIssuedForAccruedInterestAndInterestExpensesValue	2688000	USD
CY2009	nwbo	Additional Paid In Capital Rounding Off Adjustment AdditionalPaidInCapitalRoundingOffAdjustment	-3000	USD
CY2012	nwbo	Reclassification Common Par To Additional Paid In Capital ReclassificationCommonParToAdditionalPaidInCapital	0	USD
CY2012	nwbo	Redeemable Securities Amount RedeemableSecuritiesAmount	0	USD
CY2013	nwbo	Stock Issued During Period Value Conversion Of Notes Payable StockIssuedDuringPeriodValueConversionOfNotesPayable	2869000	USD
CY2013	nwbo	Warrant Liability Recorded In Connection With Issuance Of Common Stock WarrantLiabilityRecordedInConnectionWithIssuanceOfCommonStock	-5602000	USD
CY2013	nwbo	Adjustment To Additional Paid In Capital Warrant Liability On Issuance Of Common Stock AdjustmentToAdditionalPaidInCapitalWarrantLiabilityOnIssuanceOfCommonStock	5602000	USD
CY2012	nwbo	Adjustment To Additional Paid In Capital Warrant Liability On Issuance Of Common Stock AdjustmentToAdditionalPaidInCapitalWarrantLiabilityOnIssuanceOfCommonStock	0	USD
	nwbo	Adjustment To Additional Paid In Capital Warrant Liability On Issuance Of Common Stock AdjustmentToAdditionalPaidInCapitalWarrantLiabilityOnIssuanceOfCommonStock	5602000	USD
CY2013	us-gaap	Stock Redeemed Or Called During Period Shares StockRedeemedOrCalledDuringPeriodShares	1400000	shares
CY2013	nwbo	Redeemable Shares Purchase Price Per Share RedeemableSharesPurchasePricePerShare	4.80
CY2013	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "> <div style="CLEAR:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt"> <strong><font style="FONT-SIZE: 10pt"> Reclassifications</font></strong></div> <div style="CLEAR:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt"> <font style="FONT-SIZE: 10pt"> </font></div> <div style="CLEAR:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt" align="justify"><font style="FONT-SIZE: 10pt">Certain reclassifications have been made to prior period financial statements and footnotes in order to conform to the current period's presentation.</font></div> </div><table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0"><tr><td></td></tr></table>
CY2013Q3	nwbo	Cash In Custody Account CashInCustodyAccount	4500000	USD
CY2013Q4	nwbo	Due Diligence Cost DueDiligenceCost	300000	USD
CY2013Q3	nwbo	Due Diligence Cost DueDiligenceCost	1000000	USD
CY2012Q4	nwbo	Employee Stock Options Plan Reserve For Issuance EmployeeStockOptionsPlanReserveForIssuance	2250000	shares
CY2013Q4	nwbo	Employee Stock Options Plan Authorized For Issuance EmployeeStockOptionsPlanAuthorizedForIssuance	9422221	shares
CY2013	nwbo	Induced Conversion Of Convertible Expense InducedConversionOfConvertibleExpense	9000000	USD
CY2012	nwbo	Induced Conversion Of Convertible Expense InducedConversionOfConvertibleExpense	9100000	USD
CY2013	nwbo	Share Eligible For Redemption ShareEligibleForRedemption	300000	shares
CY2012	us-gaap	Debt Conversion Converted Instrument Warrants Or Options Issued1 DebtConversionConvertedInstrumentWarrantsOrOptionsIssued1	8785000	shares
CY2013Q4	nwbo	Redeemable Shares Number RedeemableSharesNumber	41667	shares
CY2013Q4	nwbo	Redeemed Shares Value RedeemedSharesValue	200000	USD
CY2013Q4	nwbo	Redeemable Shares RedeemableShares	383315	shares
CY2014Q1	nwbo	Redeemable Shares RedeemableShares	1800000	shares
CY2014Q1	nwbo	Potential Redeemable Shares Eligible PotentialRedeemableSharesEligible	300000	shares
CY2013Q3	nwbo	Inducement Expenses InducementExpenses	200000	USD
CY2012	nwbo	Class Of Warrant Or Right Issued Weighted Average Exercise Price ClassOfWarrantOrRightIssuedWeightedAverageExercisePrice	5.08
CY2013Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	99058	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	72265	USD
CY2013Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	4048	USD
CY2012Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	3747	USD
CY2013Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9094	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6642	USD
CY2013Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	112200	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	87618	USD
CY2013Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	112200	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	87618	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	0	USD
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.340	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.340	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.054	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.060	pure
CY2013	nwbo	Effective Income Tax Rate Reconciliation Change In Fair Value Of Warrant Liability And Other EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAndOther	-0.007	pure
CY2012	nwbo	Effective Income Tax Rate Reconciliation Change In Fair Value Of Warrant Liability And Other EffectiveIncomeTaxRateReconciliationChangeInFairValueOfWarrantLiabilityAndOther	0.0	pure
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.387	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.40	pure
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.0	pure
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.0	pure
CY2013	nwbo	Share Based Compensation Aggregate Non Cash Charges For Non Cash Interest Associated With Accretion Of Our Convertible Notes Discount Net ShareBasedCompensationAggregateNonCashChargesForNonCashInterestAssociatedWithAccretionOfOurConvertibleNotesDiscountNet	13500000	USD
CY2013Q4	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	18500000	USD
CY2013Q4	nwbo	Current Assets Less Payables CurrentAssetsLessPayables	7600000	USD
CY2013Q4	nwbo	Convertible Notes Payable Related Parties ConvertibleNotesPayableRelatedParties	3700000	USD
CY2013	nwbo	Potential Redemption Shares PotentialRedemptionShares	1800000	shares
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	13900000	USD
CY2012	nwbo	Proceeds From Issuance Of Redeemable Common Shares ProceedsFromIssuanceOfRedeemableCommonShares	5300000	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	49100000	USD
CY2013	nwbo	Proceeds From Ancillary Warrant Exercise And Short Term Related Party Financing Transactions ProceedsFromAncillaryWarrantExerciseAndShortTermRelatedPartyFinancingTransactions	2200000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-21189	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-29790	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3393	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-5257	USD
CY2013	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-24582	USD
CY2012	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-35047	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2013	nwbo	Lock Up Agreement Description LockUpAgreementDescription	The Company also entered into a Lock-Up Agreement with Cognate on January 17, 2014, under which Cognate agreed to have all of the shares that are issued as part of the milestone and initiation payments and the invoice conversions under the Cognate Agreements (collectively, the Lock-Up Shares) locked up for up to 30 months, in return for 15% warrant coverage for each 6-month period of lock-up, on the same terms as the warrants in the Cognate Agreements.
CY2013	nwbo	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Opening Balance ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValueOpeningBalance	10.56
CY2013	nwbo	Note One NoteOne	110000	USD
CY2013	nwbo	Note Two NoteTwo	25000	USD
CY2013	nwbo	Note Three NoteThree	25000	USD
CY2013Q2	nwbo	Investors Warrants Exercisable InvestorsWarrantsExercisable	1025641	shares
CY2013Q3	nwbo	Investors Warrants Exercisable InvestorsWarrantsExercisable	2238806	shares
CY2013Q4	nwbo	Investors Warrants Exercisable InvestorsWarrantsExercisable	2815104	shares
CY2013Q3	nwbo	Warrants Exercise Price Another Half Of Warrants WarrantsExercisePriceAnotherHalfOfWarrants	3.35
CY2013Q4	nwbo	Warrants Exercise Price WarrantsExercisePrice	6.00
CY2013Q1	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	900000	USD
CY2013Q4	nwbo	Stock Issued During Period New Issues Price Per Share StockIssuedDuringPeriodNewIssuesPricePerShare	4.80
CY2013Q4	nwbo	Common Stock Purchase Warrants CommonStockPurchaseWarrants	2815104	shares
CY2013Q3	nwbo	Stock Issued During Period For Convertible Notes In2012 StockIssuedDuringPeriodForConvertibleNotesIn2012	164155	shares
CY2013Q3	nwbo	Fair Value Price Per Share FairValuePricePerShare	2.60
CY2013Q4	nwbo	Stock Issued During Period For Convertible Accounts StockIssuedDuringPeriodForConvertibleAccounts	1818000	shares
CY2013Q4	nwbo	Stock Issued During Period For Convertible Notes StockIssuedDuringPeriodForConvertibleNotes	150000	shares
CY2013Q4	nwbo	Fair Value Of Common Stock For Convertible Accounts FairValueOfCommonStockForConvertibleAccounts	6700000	USD
CY2013Q4	nwbo	Fair Value Of Common Stock For Convertible Notes FairValueOfCommonStockForConvertibleNotes	500000	USD
CY2013Q4	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	25000000	USD
CY2013Q4	nwbo	Inducement Expenses InducementExpenses	1500000	USD
CY2013Q4	nwbo	Restricted Stock Fair Value Per Share RestrictedStockFairValuePerShare	3.68
CY2013Q3	nwbo	Warrants Exercise Price One Half Of Warrants WarrantsExercisePriceOneHalfOfWarrants	3.90
CY2013Q1	nwbo	Stock Issued During Period For Convertible Notes StockIssuedDuringPeriodForConvertibleNotes	359000	shares
CY2013Q1	nwbo	Fair Value Price Per Share FairValuePricePerShare	2.60

Files In Submission

Name	View Source	Status
0001144204-14-020023-index-headers.html	Edgar Link	pending
0001144204-14-020023-index.html	Edgar Link	pending
0001144204-14-020023.txt	Edgar Link	pending
0001144204-14-020023-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
nwbo-20131231.xml	Edgar Link	completed
nwbo-20131231.xsd	Edgar Link	pending
nwbo-20131231_cal.xml	Edgar Link	unprocessable
nwbo-20131231_def.xml	Edgar Link	unprocessable
nwbo-20131231_lab.xml	Edgar Link	unprocessable
nwbo-20131231_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
tpg12.jpg	Edgar Link	pending
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tpg9.jpg	Edgar Link	pending
v371700_10k.htm	Edgar Link	pending
v371700_ex23-1.htm	Edgar Link	pending
v371700_ex23-2.htm	Edgar Link	pending
v371700_ex31-1.htm	Edgar Link	pending
v371700_ex32-1.htm	Edgar Link	pending

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$NWBO
NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo

2014 Q1 Form 10-K Financial Statement

#000114420414020023 Filed on April 01, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBO NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo

2014 Q1 Form 10-K Financial Statement

#000114420414020023 Filed on April 01, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWBO
NORTHWEST BIOTHERAPEUTICS INC Stock $nwbo