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Note 1 - Organization and Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Revenues By Product Line [Table Text Block] |
|  | Year Ended December 31, |
(In thousands) |  | 2019 |  |  | 2018 |
Biopreservation media |  | $ | 23,358 |  |  | $ | 19,742 |
Automated thaw |  |  | 1,184 |  |  |  | — |
evo shippers |  |  | 692 |  |  |  | — |
Freezers and accessories |  |  | 2,137 |  |  |  | — |
Total revenue |  | $ | 27,371 |  |  | $ | 19,742 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended |
|  | December 31, |
(In thousands, except share and earnings per share data) |  | 2019 |  |  | 2018 (restated) |
Numerator: |  |  |  |  |  |  |  |
Net loss attributable to BioLife Solutions |  | $ | (1,657 | ) |  | $ | (25,005 | )
Less: Preferred stock dividends and accumulated deficit impact of preferred stock redemption |  |  | — |  |  |  | (339 | )
Basic net loss attributable to common stockholders |  |  | (1,657 | ) |  |  | (25,344 | )
Denominator: |  |  |  |  |  |  |  |
Basic and diluted weighted average shares outstanding |  |  | 19,460,299 |  |  |  | 16,256,465 |
Basic and diluted earnings per share attributable to common stockholders |  | $ | (0.09 | ) |  | $ | (1.56 | )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | Year Ended |
|  | December 31, |
|  | 2019 |  |  | 2018 (restated) |
Stock options and restricted stock awards |  |  | 2,564,456 |  |  |  | 2,819,306 |
Warrants |  |  | 2,903,813 |  |  |  | 2,551,507 |
Total |  |  | 5,520,495 |  |  |  | 5,370,813 |
Convertible Debt [Table Text Block] |
Fair value as of December 31, 2019 |  |  | Unpaid principal balance as of December 31, 2019 |  |  | Fair value carry amount (over)/under |
| $1,000,000 |  |  |  | $1,000,000 |  |  |  | $— |
Revenue from External Customers by Products and Services [Table Text Block] |
|  | Year Ended December 31, |
Revenue by customers’ geographic locations |  | 2019 |  |  | 2018 |
United States |  |  | 69 | % |  |  | 77 | %
Canada |  |  | 16 | % |  |  | 13 | %
Europe, Middle East, Africa (EMEA) |  |  | 14 | % |  |  | 8 | %
Other |  |  | 1 | % |  |  | 2 | %
Total revenue |  |  | 100 | % |  |  | 100 | %
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |
Risk free interest rate |  |  | 1.9 | % |  |  | 2.6 | %
Expected dividend yield |  |  | 0.0 | % |  |  | 0.0 | %
Expected lives |  |  | 1.7 |  |  |  | 2.8 |
Expected volatility |  |  | 70.3 | % |  |  | 63.4 | %

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