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Note 8 - Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Mar. 31, 2022
Goodwill | $ 99,661 | $ 133,076
Measurement period adjustment |  | 600
Accumulated impairment losses | (89,288) | (89,288)
Goodwill | 43,788 | 44,388
Goodwill acquired | 33,415 |
Lighting Segment [Member] |  |
Goodwill | 70,971 | 70,971
Measurement period adjustment |  | 0
Accumulated impairment losses | (61,763) | (61,763)
Goodwill | 9,208 | 9,208
Goodwill acquired | 0 |
Display Solutions Segment [Member] |  |
Goodwill | 28,690 | 62,105
Measurement period adjustment |  | 600
Accumulated impairment losses | (27,525) | (27,525)
Goodwill | 34,580 | $ 35,180
Goodwill acquired | $ 33,415 |

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