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v3.23.1

Note 7 - Assets Held for Rent (Details Textual) - USD ($) | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Assets Held for Rent, Depreciation | $ 843,000 | $ 896,000

X
- Definition The amount of depreciation expenses recognized for assets held for rent. + References No definition available. + Details
Name: | blfs_AssetsHeldForRentDepreciation
Namespace Prefix: | blfs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration