XML 32 R21.htm IDEA: XBRL DOCUMENT v3.7.0.1

Note 1 - Significant Accounting Policies - Summary of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Royalty revenue	$ 489	$ 629	$ 6,810	$ 2,519
Collaborative and other research and development revenues	2,610	4,158	5,726	7,088
Revenues	3,099	4,787	12,536	9,607
US Department of Health and Human Services [Member]
Collaborative and other research and development revenues	2,161	3,709	2,815	6,033
Shionogi and Co. Ltd [Member]
Collaborative and other research and development revenues	296	296	592	592
Seqirus UK Limited [Member]
Collaborative and other research and development revenues	$ 153	$ 153	$ 2,319	$ 463

X

- Definition

Represents collaborative and other research and development.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_RoyaltyRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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

X

- Details

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

X

- Details

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