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Note 11 - Significant Transaction (Details Textual) - USD ($) $ in Thousands |  | 2 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Oct. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Payments to Acquire Businesses, Gross |  |  |  |  |  | $ 184,102 | $ 4,840
Amortization of Inventory Step-up Cost |  |  |  |  |  | 5,134 |
Amortization of Intangible Assets, Total |  |  |  | $ 2,565 | $ 2,190 | 5,895 | 5,418
Revenue from Contract with Customer, Excluding Assessed Tax, Total | [1] |  |  | $ 31,655 | $ 26,682 | $ 83,479 | $ 76,689
Effective Income Tax Rate Reconciliation, Percent, Total |  |  |  | 11.00% | 9.50% | 20.70% | 8.60%
Asset Impairment Charges, Total |  |  |  | $ 276 | $ 3,669 | $ 298 | $ 3,669
Biopharmaceutical Development [Member] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax, Total | [1] |  |  | 5,637 |  | 5,637 |
Cold Chain Packaging [Member] |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax, Total | [1] |  |  | 229 | 2,052 | 2,442 | 5,521
Asset Impairment Charges, Total |  |  |  |  |  | 276 |
Accounts Receivable, after Allowance for Credit Loss, Total |  |  | $ 132 | 132 |  | 132 |
GPT Acquisition [Member] |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 181,547 |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | [2] | 6,663 |  |  |  |  |
Inventory Step-up Cost |  | 12,958 | 787 | 787 | $ 12,958 | 787 | 12,958
Amortization of Inventory Step-up Cost |  |  | 5,134 |  |  | 5,134 |
Amortization of Intangible Assets, Total |  |  |  |  |  | 3,336 | $ 4,289
Business Combination, Acquisition Related Costs |  |  |  |  |  | $ 1,200 |
Revenue from Contract with Customer, Excluding Assessed Tax, Total |  |  |  | 5,637 |  |  |
Net Income (Loss) Attributable to Parent, Total |  |  |  | $ (4,997) |  |  |
Effective Income Tax Rate Reconciliation, Percent, Total |  |  |  |  |  | 25.00% |
GPT Acquisition [Member] | Biopharmaceutical Development [Member] |  |  |  |  |  |  |
Goodwill, Acquired During Period |  | 119,130 |  |  |  |  |
GPT Acquisition [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  | 794 |  |  |  |
GPT Acquisition [Member] | Cost of Sales [Member] |  |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  | $ 124 |  |  |  |
GPT Acquisition [Member] | Customer Relationships [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 10 years |  |  |  |
GPT Acquisition [Member] | Trade Names [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 10 years |  |  |  |
GPT Acquisition [Member] | Technology-Based Intangible Assets [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 10 years |  |  |  |
GPT Acquisition [Member] | Noncompete Agreements [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 5 years |  |  |  |
GPT Acquisition [Member] | Trade Accounts Receivable [Member] |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  | $ 6,663 |  |  |  |  |
[1] | Intersegment revenues are not significant and are eliminated to arrive at consolidated totals.
[2] | Accounts receivable is composed of $6,663 of trade accounts receivable, net which is due from customers and is expected to be collected.

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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