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v3.21.2

Note 1 - Organization and Significant Accounting Policies (Details Textual) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2020 | Sep. 30, 2021 USD ($) | Sep. 30, 2020 | Dec. 31, 2020 USD ($) | Oct. 01, 2020 USD ($)
Number of Reportable Segments |  |  | 1 |  |  |
Number of Operating Segments |  |  | 1 |  |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance | $ 75,100,000 |  | $ 75,100,000 |  | $ 90,400,000 |
Deferred Tax Payments, Social Security | $ 432,000 |  | $ 432,000 |  |  |
Deferred Social Security Tax Payments Payback, Percentage Tranche One | 50.00% |  | 50.00% |  |  |
Deferred Social Security Tax Payments Payback, Percentage Tranche Two | 50.00% |  | 50.00% |  |  |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] |  |  |  |  |  |
Number of Major Customers | 1 | 1 | 1 | 1 |  |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | CryoStor Products [Member] |  |  |  |  |  |
Concentration Risk, Percentage | 30.00% | 62.00% | 33.00% | 64.00% |  |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | 780XLE Freezer Line [Member] |  |  |  |  |  |
Concentration Risk, Percentage | 29.00% |  | 21.00% |  |  |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Customer [Member] |  |  |  |  |  |
Concentration Risk, Percentage | 19.00% | 11.00% | 14.00% | 12.00% |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |  |  |  |
Number of Major Customers |  |  | 2 |  | 1 |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member] |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  | 17.00% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Two Customers [Member] |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 29.00% |  |  |
Supplier Concentration Risk [Member] | Accounts Payable [Member] |  |  |  |  |  |
Number of Suppliers |  |  | 1 |  | 1 |
Supplier Concentration Risk [Member] | Accounts Payable [Member] | One Supplier [Member] |  |  |  |  |  |
Concentration Risk, Percentage |  |  | 11.00% |  | 21.00% |
Paycheck Protection Program CARES Act [Member] |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.00% |  | 1.00% |  |  |
Paycheck Protection Program CARES Act [Member] | SciSafe Holdings, Inc [Member] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt |  |  |  |  |  | $ 295,300
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 1.00%

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