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

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.

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