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Note 12 - Significant Transactions (Details Textual) - USD ($) |  | 3 Months Ended | 5 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Oct. 31, 2019 | Dec. 31, 2020 | Sep. 30, 2020 | Dec. 31, 2019 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Payments to Acquire Businesses, Gross |  |  |  |  |  |  | $ (0) | $ 184,102,000
Amortization of Intangible Assets, Total |  |  | $ 3,828 |  | $ 2,565 |  | 10,694 | 5,895
Amortization of Inventory Step-up Cost |  |  |  |  |  |  | (436,000) | 5,134,000
Goodwill, Ending Balance |  |  | 165,784,000 |  |  | $ 141,536,000 | 165,784,000 |
Share-based Payment Arrangement, Expense |  |  | $ 3,611,000 |  | $ 3,260,000 |  | $ 6,887,000 | $ 5,310,000
Effective Income Tax Rate Reconciliation, Percent, Total |  |  | 20.70% |  | 11.30% |  | 75.00% | 19.20%
GPT Acquisition [Member] |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 181,547,000 |  |  |  |  |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles |  |  |  |  |  |  | $ (6,002,000) |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory |  |  |  |  |  |  | (3,752,000) |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment |  |  |  |  |  |  | 878,000 |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Accrued Expenses |  |  |  |  |  |  | 1,899,000 |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Receivable |  |  |  |  |  |  | 500,000 |
Amortization of Intangible Assets, Total |  |  |  |  |  |  | (344,000) | $ 4,801,000
Depreciation, Total |  |  |  |  |  |  |  | $ 66,000
Inventory Step-up Cost | 8,066,000 |  |  |  |  |  |  |
Amortization of Inventory Step-up Cost |  |  |  |  |  | $ 8,502,000 | (436,000) |
Goodwill, Ending Balance | $ 85,130,000 | [1] | $ 85,130,000 |  |  |  | 85,130,000 |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  | 23,863,000 |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  | (7,370,000) |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Amortization of Intangible Assets |  |  |  |  |  |  | (6,000,000) |
Business Combination, Pro Forma Information, Realized and Unrealized Gain (Loss) of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  | $ 4,000 |
Effective Income Tax Rate Reconciliation, Percent, Total |  |  |  |  |  |  |  | 25.00%
GPT Acquisition [Member] | Performance Stock Units [Member] | Key GPT Employees [Member] |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  |  |  |  | $ 358,000
GPT Acquisition [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  |  |  | 10 years |
GPT Acquisition [Member] | Technology-Based Intangible Assets [Member] |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  |  |  | 10 years |
GPT Acquisition [Member] | Cost of Sales [Member] |  |  |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  |  |  |  |  | $ 178,000 |
GPT Acquisition [Member] | Cost of Sales [Member] | Biopharmaceutical Development [Member] |  |  |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  |  |  |  |  | 1,101,000 |
GPT Acquisition [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  |  |  |  |  | (522,000) |
Depreciation, Total |  |  |  | $ 207,000 |  |  |  |
GPT Acquisition [Member] | General and Administrative Expense [Member] | Biopharmaceutical Development [Member] |  |  |  |  |  |  |  |
Amortization of Intangible Assets, Total |  |  |  |  |  |  | $ 5,328,000 |
[1] | Acquired goodwill of $85,130, all of which is allocated to the Biopharmaceutical Development reportable segment, represents the value expected to arise from organic revenues growth projections that are expected to exceed that of our legacy divisions, and the opportunity to expand into a new market with well-established market share. The goodwill acquired is not deductible for income tax purposes.

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