XML 32 R58.htm IDEA: XBRL DOCUMENT v3.20.1

Note 8 - Warrants (Details Textual) - $ / shares		3 Months Ended
	May 14, 2020	Mar. 31, 2020	Dec. 31, 2019	May 31, 2016	Mar. 31, 2014
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 4.33	$ 4.33
Class of Warrant or Right, Exercised During Period (in shares)		2,000
Class of Warrant or Right, Outstanding (in shares)		3,957,005	3,959,005
Warrants to Purchase Common Stock [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					6,910,283
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 4.75
Warrants in Connection with WAVI Credit Facility [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				550,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 1.75
WAVI Holding AG and Taurus4757 GmbH Warrants [Member] | Subsequent Event [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 4.75
Stock Issued During Period, Shares, Warrant Exercises (in shares)	2,747,970
Class of Warrant or Right, Exercised During Period (in shares)	3,871,405
Class of Warrant or Right, Outstanding (in shares)	85,600

X

- Definition

The number of warrants or rights exercised during period.

+ References

No definition available.

+ Details

Name:	blfs_ClassOfWarrantOrRightExercisedDuringPeriod
Namespace Prefix:	blfs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares issued during period for warrant exercises.

+ References

No definition available.

+ Details

Name:	blfs_StockIssuedDuringPeriodSharesWarrantExercises
Namespace Prefix:	blfs_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=blfs_WarrantsToPurchaseCommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=blfs_WarrantsInConnectionWithWaviCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=blfs_WaviHoldingAgAndTaurus4757GmbhWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: