Note 17 - Subsequent Event (Details Textual) - Foreign-Trade Zone Corporation [Member] - Subsequent Event [Member] $ in Millions	Apr. 05, 2021 USD ($)
Business Combination, Consideration Transferred, Total	$ 18.0
Payments to Acquire Businesses, Gross	$ 13.0
Business Combination, Performance-based Earnout Payments, Period (Year)	3 years
Notes Payable, Other Payables [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 2.4
Debt Instrument, Term (Year)	4 years

The period of performance-based earnout payments of the business combination.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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