XML 67 R30.htm IDEA: XBRL DOCUMENT
v3.20.1

Note 5 - Assets Held for Rent (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Notes Tables |
Scheduleof Assets Held for Rent [Table Text Block] |
(In thousands) |  | December 31, 2019 |
Shippers placed in service |  | $ | 3,073 |
Accumulated depreciation |  |  | (174 | )
Net |  |  | 2,899 |
Shippers and related components in production |  |  | 1,023 |
Total |  | $ | 3,922 |

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

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