XML 38 R36.htm IDEA: XBRL DOCUMENT v3.19.3

Note 8 - Subsequent Event (Details Textual) - USD ($)				3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Nov. 05, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer, Including Assessed Tax				$ 1,775,000	$ 1,454,000	$ 9,110,000	$ 17,924,000
The BCX7353 Product [Member] | Torii Pharmaceutical Co. [Member] | Forecast [Member]
Revenue from Contract with Customer, Conditional Milestone Payment	$ 15,000	$ 20,000
Subsequent Event [Member] | The BCX7353 Product [Member] | Torii Pharmaceutical Co. [Member]
Revenue from Contract with Customer, Including Assessed Tax			$ 22,000
Subsequent Event [Member] | The BCX7353 Product [Member] | Torii Pharmaceutical Co. [Member] | Minimum [Member]
Tiered Royalty, Percent from Net Sales, if Designation is Maintained			20.00%
Tiered Royalty, Percent from Net Sales, if Designation is Not Maintained			15.00%
Subsequent Event [Member] | The BCX7353 Product [Member] | Torii Pharmaceutical Co. [Member] | Maximum [Member]
Tiered Royalty, Percent from Net Sales, if Designation is Maintained			40.00%
Tiered Royalty, Percent from Net Sales, if Designation is Not Maintained			35.00%

X

- Definition

The amount of conditional milestone payment recognized as revenue if regulatory approval is in effect by a specific date.

+ References

No definition available.

+ Details

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Namespace Prefix:	bcrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

The tiered royalty percent of net sales if designation is maintained.

+ References

No definition available.

+ Details

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Namespace Prefix:	bcrx_
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X

- Definition

The tiered royalty percent of net sales if designation is not maintained.

+ References

No definition available.

+ Details

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X

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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- Details

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- Details

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