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Note 6 - Goodwill and Other Intangibles - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022
March 31, 2021	$ 43,471
March 31, 2022	43,471	$ 43,471
Grid [Member]
March 31, 2021	43,471	34,634
Neeltran Acquisition		8,837
Less impairment loss	0
March 31, 2022	$ 43,471	$ 43,471

X

- Definition

Amount after accumulated impairment loss of an asset representing 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

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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