Basis of Accounting, Policy [Policy Text Block]

Basis of presentation

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Astero Bio Corporation (“Astero” or “ThawStar” acquired on April 1, 2019), SAVSU Technologies, Inc. (“SAVSU” acquired on August 8, 2019), Arctic Solutions, Inc. dba Custom Biogenic Systems (“CBS” acquired on November 12, 2019), and SciSafe Holdings, Inc. (“SciSafe” acquired on October 1, 2020). All significant intercompany accounts and transactions have been eliminated in consolidation.

All long-lived assets are maintained in the United States of America.

Revenue [Policy Text Block]

Revenue recognition

To determine revenue recognition for contractual arrangements that we determine are within the scope of Financial Accounting Standards Board (“FASB”) Topic 606, “Revenue from Contracts with Customers”, we perform the following five steps: (i) identify each contract with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to our performance obligations in the contract; and (v) recognize revenue when (or as) we satisfy the relevant performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services we transfer to the customer. The Company primarily recognizes product revenue and service revenues. Product revenues are generated from the sale of biopreservation media, ThawStar, and freezer products. We generally recognize product revenue, including shipping and handling charges billed to customers, when we transfer control of our products to our customers (transfer of control generally occurs upon shipment of our product). Shipping and handling costs are classified as part of cost of product revenue in the statement of operations. Service revenues are generated from the storage of biological and pharmaceutical materials. We generally recognize service revenues over time as services are performed or ratably over the contract term.

The following table includes estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting periods. The Company is electing not to disclose the value of the remaining unsatisfied performance obligation with a duration of one year or less as permitted by the practical expedient in ASU 2014-09, “Revenue from Contracts with Customers”. The estimated revenue in the following table does not include contracts with the original durations of one year or less, amounts of variable consideration attributable to royalties, or contract renewals that are unexercised as of December 31, 2020.

The balances in the table below are partially based on judgments involved in estimating future orders from customers subject to the exercise of material rights pursuant to respective contracts:

	Year Ended December 31,
(In thousands)	2021		2022		2023		2024		Total
Service revenue	$	3,342	$	1,170	$	31	$	10	$	4,553

The Company also generates revenue from the leasing of our evo cold chain systems, which are typically cloud-connected shippers with enabling cold chain cloud applications, to customers pursuant to rental arrangements entered into with the customer. Revenue from the rental of cold chain systems is not within the scope of FASB ASC Topic 606 as it is within the scope of FASB ASC Topic 842, “Leases”. All customers leasing shippers currently do so under month-to-month rental arrangements. We account for these rental transactions as operating leases and record rental revenue on a straight-line basis over the rental term. These rental arrangements may contain both lease and non-lease components. We have elected to utilize the practical expedient to account for lease and non-lease components together as a single combined lease component as the timing and pattern of transfer are the same for the non-lease components and associated lease component and, the lease component, if accounted for separately, would be classified as an operating lease.

The following table presents revenues by product line:

	Year Ended December 31,
(In thousands)	2020⁽¹⁾		2019⁽²⁾
Biopreservation media	$	30,946	$	23,358
Automated thawing		1,709		1,184
Cold chain management		46		165
Freezers and accessories		11,839		2,137
Total product revenue		44,540		26,844

Cold chain management		1,795		527
Total rental revenue		1,795		527

Biological and pharmaceutical storage		1,752		-
Total storage revenue		1,752		-

Total revenue	$	48,087	$	27,371

(1)	2020 revenue includes service revenue related to SciSafe from October 1, 2020 through December 31, 2020.
(2)	2019 revenue includes automated thawing revenue related to Astero from April 1, 2019 through December 31, 2019; evo shipper rental revenue related to SAVSU from August 8, 2019 through December 31, 2019; and freezer and accessory revenue related to CBS from November 12, 2019 through December 31, 2019.

Earnings Per Share, Policy [Policy Text Block]

Earnings per share

The Company considers its unexercised warrants and unvested restricted shares, which contain non-forfeitable rights to dividends, participating securities, and includes such participating securities in its computation of earnings per share pursuant to the two-class method. Basic earnings per share for the two classes of stock (common stock and warrants) is calculated by dividing net income by the weighted average number of shares of common stock and warrants outstanding during the reporting period. Diluted earnings per share is calculated using the weighted average number of shares of common stock plus the potentially dilutive effect of common equivalent shares outstanding determined under both the two-class method and the treasury stock method, whichever is more dilutive.

The following table presents computations of basic and diluted earnings per share under the two-class method:

	Year Ended December 31,
(In thousands, except share and earnings per share data)	2020			2019
Basic earnings (loss) per common share
Numerator:
Net income (loss)	$	2,667		$	(1,657	)
Amount attributable to unvested restricted shares		(135	)		-
Amount attributable to warrants outstanding		(82	)		-
Net income (loss) allocated to common shareholders		2,450			(1,657	)

Denominator:
Weighted-average common shares issued and outstanding		27,306,258			19,460,299
Basic earnings (loss) per common share		0.09			(0.09	)

Diluted earnings (loss) per common share
Numerator:
Net income (loss)		2,667			(1,657	)
Amount attributable to warrants		(20	)		-
Less: gain related to change in fair value of warrants		(3,601	)		-
Diluted loss allocated to common shareholders		(954	)		(1,657	)

Denominator:
Weighted-average common shares issued and outstanding		27,306,258			19,460,299
Diluted loss per common share	$	(0.03	)	$	(0.09	)

The following table sets forth the number of shares excluded from the computation of diluted loss per share, as their inclusion would have been anti-dilutive:

	Year Ended December 31,
	2020		2019
Stock options and restricted stock awards		2,131,794		2,564,456
Warrants		1,499,953		2,956,039
Total		3,631,747		5,520,495

Inventory, Policy [Policy Text Block]

Inventories

Inventories relate to the Company’s cell and gene therapy products. The Company values biopreservation media inventory at cost or, if lower, net realizable value, using the specific identification method. All other inventory is valued at cost or, if lower, net realizable value, using the first-in, first-out method. The Company reviews its inventories at least quarterly and records a provision for inventory that has become obsolete, inventory that has a cost basis in excess of its expected net realizable value, and inventory in excess of expected revenue volume to cost of product revenue. The Company bases its estimates on expected product revenue volume, production capacity and expiration dates of raw materials, work in process, and finished products. A change in the estimated timing or amount of demand for the Company’s products could result in additional provisions for excess inventory quantities on hand. Any significant unanticipated changes in demand or unexpected quality failures could have a significant impact on the value of inventory and reported operating results. During all periods presented in the accompanying consolidated financial statements, there have been no material adjustments related to a revised estimate of inventory valuations. Work-in-process and finished products inventories consist of material, labor, outside testing costs and manufacturing overhead.

Investment, Policy [Policy Text Block]

Investments

We periodically invest in securities of private companies to promote business and strategic objectives. These investments are measured and recorded as follows:

Non-marketable equity securities are equity securities without a readily determinable fair value. At December 31, 2020, these investments are comprised of $1.5 million in Series A Preferred Stock in Sexton BioTechnologies, Inc. (“Sexton”), $3.4 million in Series A-1 and A-2 Preferred Stock in iVexSol, Inc. (“iVexSol”), and $995,000 in Series E Preferred Stock in PanTHERA CryoSolutions, Inc. (“PanTHERA”). At December 31, 2019, investments were comprised of $1.5 million in Series A Preferred Stock in Sexton.

The Sexton investment is measured and recorded using a measurement alternative that measures the securities at cost minus impairment, if any. The preferred stock is also convertible at our option into common stock at a price of $0.33 per share. In September of 2019, the Company invested $1.0 million in a convertible note receivable of iVexSol, Inc. The Company made an irrevocable election to record this convertible note in its entirety at fair value utilizing the fair value option available under U.S. GAAP. The Company believed that carrying this investment at fair value better portrayed the economic substance of the investment. Under the fair value option, gains and losses on the convertible note are included in unrealized gains/(losses) on investments within net earnings each reporting period. Gains related to the increase in fair value of this convertible note were $1.3 million and zero for the years ended December 31, 2020 and 2019, respectively. The fair value of the note on the date of investment was determined to be equal to its principal amount. Interest income related to this note is recorded separately from other changes in its fair value within interest income each period. In November of 2020, the Company elected to convert the note into Series A-1 Preferred Stock and invest an additional $1.0 million in Series A-2 Preferred Stock in iVexSol. The Preferred Stock investments in iVexSol are carried at cost minus impairment.

In November of 2020, the Company invested $995,000 in Class E Preferred Shares in PanTHERA CryoSolutions, Inc. In conjunction with this investment, the Company executed a development and license agreement with PanTHERA under which the Company will make milestone development payments up to $2 million over the next 24 months in the event that certain milestones are met in exchange for exclusive, perpetual, worldwide marketing and distribution rights to the technology for use in cell and gene therapy applications. The Preferred Stock investments in PanTHERA are carried at cost minus impairment.

As of December 31, 2020, management believes there are no indications of impairment for the investments in Sexton, iVexSol, or PanTHERA.

Assets Held for Rent, Policy [Policy Text Block]

Assets held for rent

Assets held for rent are carried at cost less accumulated depreciation. These assets consist of evo shippers and related components in production shippers complete and ready to be deployed and placed in service upon a customer order, shippers in the process of being assembled, and components available to build shippers. When the shipper is sent to our customers, we depreciate the cost of the shippers over its estimated useful life of three years.

Our customers rent the shippers per a rental agreement. Each agreement provides for fixed monthly rent. Rental revenue and fees are recognized over the rental term on a straight-line basis. We retain the ownership of the shippers and the evo tracking software platform. At the end of the rental agreement, the customer returns the shipper to the Company.

Assets held for rent are reviewed for impairment whenever events or changes in circumstances indicate that their net book value may not be recoverable. If the sum of the expected future cash flows (undiscounted and before interest) from the use of the assets is less than the net book value of the asset an impairment could exist and the amount of the impairment loss, if any, will generally be measured as the difference between the net book value of the assets and their estimated fair values. There were no impairment losses recognized during the years ended December 31, 2020 and 2019.

Income Tax, Policy [Policy Text Block]

Income taxes

We account for income taxes using an asset and liability method which generally requires recognition of deferred tax assets and liabilities for the expected future tax effects of events that have been included in the financial statements or tax returns. Under this method, deferred tax assets and liabilities are recognized for the future tax effects of differences between tax bases of assets and liabilities, and financial reporting amounts, based upon enacted tax laws and statutory rates applicable to the periods in which the differences are expected to affect taxable income. We evaluate the likelihood of realization of deferred tax assets and provide an allowance where, in management’s opinion, it is more likely than not that the asset will not be realized. Our policy for interest and penalties is to recognize interest and penalties as a component of the provision for income taxes in the consolidated statement of operations.

We determine any uncertain tax positions based on a determination of whether and how much of a tax benefit taken in the Company’s tax filings or positions is more likely than not to be sustained upon examination by the relevant income tax authorities.

Judgment is applied in the determination of the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. As of December 31, 2020, the Company has an unrecorded tax benefit of $96,000 related to tax attributes being carried forward. The Company is generally subject to examination by U.S. federal and local income tax authorities for all tax years in which loss carryforward is available.

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Concentrations of risk

In the years ended December 31, 2020 and 2019, we derived approximately 13% of our revenue from one customer and 15% of our revenue from one customer, respectively. All revenue from foreign customers are denominated in United States dollars.

In the year ended December 31, 2020, no suppliers accounted for more than 10% of purchases. In the year ended December 31, 2019, we derived approximately 12% of purchases from one supplier.

The following table represents the Company’s total revenue by geographic area (based on the location of the customer):

	Year Ended December 31,
Revenue by customers’ geographic locations	2020			2019
United States		73	%		69	%
Canada		13	%		16	%
Europe, Middle East, Africa (EMEA)		12	%		14	%
Other		2	%		1	%
Total revenue		100	%		100	%

At December 31, 2020, one customer accounted for 17% of gross accounts receivable. At December 31, 2019, two customers accounted for 25% of gross accounts receivable. No other customers accounted for more than 10% of our gross accounts receivable. In the years 2020 and 2019, we derived approximately 60% and 74%, respectively, of our revenue from CryoStor products.

At December 31, 2020, one supplier accounted for 21% of accounts payable. At December 31, 2019, two suppliers accounted for 24% of accounts payable. No other suppliers accounted for more than 10% of our accounts payable.

Share-based Payment Arrangement [Policy Text Block]

Stock-based compensation

We measure and record compensation expense using the applicable accounting guidance for share-based payments related to stock options, time-based restricted stock, market-based restricted stock awards and performance-based restricted stock awards granted to our directors and employees. The fair value of stock options, including performance awards, without a market-based condition is determined by using the Black-Scholes option-pricing model. The fair value of restricted stock awards with a market condition is estimated, at the date of grant, using the Monte Carlo Simulation model. The Black-Scholes and Monte Carlo Simulation valuation models incorporate assumptions as to stock price volatility, the expected life of options or awards, a risk-free interest rate and dividend yield. In valuing our stock options, significant judgment is required in determining the expected volatility of our common stock. Expected volatility for stock options is based on the historical and implied volatility of our own common stock while the volatility for our restricted stock awards with a market condition is based on the historical volatility of our own stock and the stock of companies within our defined peer group. Further, our expected volatility may change in the future, which could substantially change the grant-date fair value of future awards and, ultimately, the expense we record. The fair value of restricted stock, including performance awards, without a market condition is estimated using the current market price of our common stock on the date of grant.

We expense stock-based compensation for stock options, restricted stock awards, and performance awards over the requisite service period. For awards with only a service condition, we expense stock-based compensation using the straight-line method over the requisite service period for the entire award. For awards with a market condition, we expense the grant date fair value over the vesting period regardless of the value that the award recipients ultimately receive.

Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]

Goodwill

Goodwill represents the excess of the purchase price over the net amount of identifiable assets acquired and liabilities assumed in a business combination measured at fair value. Goodwill is not amortized but is tested for impairment at least annually. The Company reviews goodwill for impairment annually at the end of its fourth fiscal quarter and whenever events or changes in circumstances indicate that the fair value of a reporting unit may be less than its carrying amount (a triggering event). The Company first assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the quantitative goodwill impairment test described in FASB ASC Topic 350, “Intangibles – Goodwill and Other”. The more likely than not threshold is defined as having a likelihood of more than 50 percent. If, after assessing the totality of events or circumstances, the Company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the quantitative goodwill impairment test is unnecessary and goodwill is considered to be unimpaired. However, if based on the qualitative assessment the Company concludes that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company will proceed with performing the quantitative goodwill impairment test. In performing the quantitative goodwill impairment test, the Company determines the fair value of each reporting unit and compares it to its carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not impaired. If the carrying value of a reporting unit exceeds its fair value, the Company records an impairment loss equal to the difference. The Company operates as one reporting unit as of the goodwill impairment measurement date of December 31, 2020. As of December 31, 2020, management believes there are no indications of impairment.

Warrants, Policy [Policy Text Block]

Certain warrants which have features that may result in cash settlement

Warrants that include cash settlement features are recorded as liabilities at their estimated fair value at the date of issuance and are remeasured at fair value each reporting period with the increase or decrease in fair value recorded in the consolidated statements of operations. The warrants are measured at estimated fair value using the Black Scholes valuation model, which is based, in part, upon inputs for which there is little or no observable market data, requiring the Company to develop its own assumptions. Inherent in this model are assumptions related to expected stock-price volatility, expected life, risk-free interest rate and dividend yield. We estimate the volatility of our common stock at the date of issuance, and at each subsequent reporting period, based on historical volatility that matches the contractual remaining life of the warrants. The risk-free interest rate is based on the U.S. Treasury zero-coupon yield curve on the grant date for a maturity similar to the expected remaining life of the warrants. The expected life of the warrants is assumed to be equivalent to their remaining contractual term. The dividend rate is based on our historical rate, which we anticipate to remain at zero. The assumptions used in calculating the estimated fair value of the warrants represent our best estimates. However, these estimates involve inherent uncertainties and the application of management judgment. As a result, if factors change and different assumptions are used, the warrant liability and the change in estimated fair value could be materially different. The following is our weighted average assumptions used in the Black Scholes calculations of the warrants:

	Year Ended December 31,
	2020			2019
Risk free interest rate		0.1	%		1.9	%
Expected dividend yield		0.0	%		0.0	%
Contractual remaining lives		0.2			1.7
Expected volatility		56.8	%		70.3	%