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Note 5 - Assets Held for Rent (Tables) | 3 Months Ended
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Mar. 31, 2020
Notes Tables |
Scheduleof Assets Held for Rent [Table Text Block] |
(In thousands) |  | March 31, 2020 |  |  | December 31, 2019 |
Shippers placed in service |  | $ | 3,748 |  |  | $ | 3,073 |
Accumulated deprecation |  |  | (302 | ) |  |  | (174 | )
Net |  |  | 3,446 |  |  |  | 2,899 |
Shippers and related components in production |  |  | 1,429 |  |  |  | 1,023 |
Total |  | $ | 4,875 |  |  | $ | 3,922 |

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- Definition Tabular disclosure of assets held for rent. + References No definition available. + Details
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Namespace Prefix: | blfs_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration