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Note 6 - Goodwill (Details Textual) $ in Thousands		3 Months Ended		12 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2022 USD ($)
Number of Reporting Units				7
Goodwill, Impairment Loss				$ (0)
Engineering Technologies Group [Member]
Goodwill, Impairment Loss	$ 7,600	$ 7,600		$ (0)
Refrigerated Solutions Group [Member]
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down			$ 7,700

X

- Definition

Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

+ References

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X

- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

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