XML 70 R54.htm IDEA: XBRL DOCUMENT v3.8.0.1

Note 10 - Collaborative and Other Research and Development Contracts (Details Textual) - USD ($) $ in Thousands		1 Months Ended					12 Months Ended	33 Months Ended
	Jun. 16, 2015	May 31, 2010	Jan. 31, 2007	Jun. 30, 2006	Feb. 28, 2006	Jun. 30, 2000	Dec. 31, 2017	Dec. 31, 2017	Mar. 31, 2015	Nov. 11, 2011
Collaborative Agreement Contract Value			$ 5,000
UAB [Member]
Period of Agreement							25 years
Renewable Period of Agreement							5 years
CSL Limited [Member
Proceeds from License Fees Received	$ 33,740
Milestone Payment Received	7,000
Milestone Payment Maximum	$ 5,000
Royalty Term	10 years
Base Contract [Member]
Government Contract Receivable									$ 16,265
Additional Development Options [Member]
Government Contract Receivable									22,855
ASPRBARDA Contract [Member]
Government Contract Receivable									$ 39,120
Proceeds from awards for Research and Development Contracts								$ 20,574
Green Cross Corporation [Member]
Proceeds from License Fees Received				$ 250
Mundipharma [Member]
Upfront Payments Receivable Amount					$ 10,000
Potential Milestone Payments Receivable										$ 15,000
Mundipharma [Member] | Upfront Payment [Member]
Deferred Revenue					$ 5,000
AECOM and IRL [Member]
Milestone Payment Maximum						$ 4,000
Milestone Payment Minimum						1,400
Annual License Fee Minimum						150
Annual License Fee Maximum						$ 500
Advance Notice Period for Termination of Agreement						60 days
Stock Issued During Period, Value, for Modification of License Agreement		$ 5,911
Payments for Modification of License Agreement		$ 90

X

- Definition

Represents advance notice period for termination of agreement.

+ References

No definition available.

+ Details

Name:	bcrx_AdvanceNoticePeriodForTerminationOfAgreement
Namespace Prefix:	bcrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents annual maximum license fee.

+ References

No definition available.

+ Details

Name:	bcrx_AnnualLicenseFeeMaximum
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represent minimum annual license fee.

+ References

No definition available.

+ Details

Name:	bcrx_AnnualLicenseFeeMinimum
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents collaborative agreement contract value.

+ References

No definition available.

+ Details

Name:	bcrx_CollaborativeAgreementContractValue
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents milestone payment maximum.

+ References

No definition available.

+ Details

Name:	bcrx_MilestonePaymentMaximum
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents milestone payment minimum.

+ References

No definition available.

+ Details

Name:	bcrx_MilestonePaymentMinimum
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the amount of milestone payment received.

+ References

No definition available.

+ Details

Name:	bcrx_MilestonePaymentReceived
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents payments for modifications of license agreement.

+ References

No definition available.

+ Details

Name:	bcrx_PaymentsForModificationOfLicenseAgreement
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents period of agreement.

+ References

No definition available.

+ Details

Name:	bcrx_PeriodOfAgreement
Namespace Prefix:	bcrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents potential milestone payments receivable based on possibility of future event payments.

+ References

No definition available.

+ Details

Name:	bcrx_PotentialMilestonePaymentsReceivable
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents proceeds from awards for research and development contracts.

+ References

No definition available.

+ Details

Name:	bcrx_ProceedsFromAwardsForResearchAndDevelopmentContracts
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents renewable period of agreement.

+ References

No definition available.

+ Details

Name:	bcrx_RenewablePeriodOfAgreement
Namespace Prefix:	bcrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period of time between the date of the Agreement and its expiration.

+ References

No definition available.

+ Details

Name:	bcrx_RoyaltyTerm
Namespace Prefix:	bcrx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents stock issued during period value for modification of license agreement.

+ References

No definition available.

+ Details

Name:	bcrx_StockIssuedDuringPeriodValueForModificationOfLicenseAgreement
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents upfront payments receivable.

+ References

No definition available.

+ Details

Name:	bcrx_UpfrontPaymentsReceivableAmount
Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 13.A.3)
-URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 13.A.4(a).Q1)
-URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of receivables that are derived from government contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 310
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68054760&loc=d3e55295-109406

+ Details

Name:	us-gaap_GovernmentContractReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Cash received from licensees for license fees during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

+ Details

Name:	us-gaap_ProceedsFromLicenseFeesReceived
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis=bcrx_UABMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CounterpartyNameAxis=bcrx_CSLLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bcrx_BaseContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bcrx_AdditionalDevelopmentOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bcrx_ASPRBARDAContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bcrx_GreenCrossCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bcrx_MundipharmaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DeferredRevenueArrangementTypeAxis=bcrx_UpfrontPaymentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=bcrx_AECOMAndIRLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: