Note 1 - Organization and Significant Accounting Policies (Tables)

12 Months Ended

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	%