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v3.20.2

Note 2 - Fair Value Measurement (Details Textual) | 6 Months Ended
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Jun. 30, 2020
Minimum [Member] | Measurement Input, Price Volatility [Member] |
Warrants and Rights Outstanding, Measurement Input | 0.739
Maximum [Member] |
Warrants and Rights Outstanding, Term (Year) | 1 year
Maximum [Member] | Measurement Input, Price Volatility [Member] |
Warrants and Rights Outstanding, Measurement Input | 0.777
Convertible Debt Securities [Member] | Minimum [Member] |
Debt Securities, Term (Year) | 3 years
Convertible Debt Securities [Member] | Maximum [Member] |
Debt Securities, Term (Year) | 5 years

X
- Definition Period between issuance and maturity of investment in debt security in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | blfs_
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Balance Type: | na
Period Type: | duration

X
- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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Balance Type: | na
Period Type: | instant

X
- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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Balance Type: | na
Period Type: | instant

X
- Details
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- Details
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- Details
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- Details
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