Note 4 - Segment Reporting Information - Identifiable Assets by Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Identifiable assets	$ 312,555	$ 286,821
Corporate and Eliminations [Member]
Identifiable assets	5,078	7,298
Lighting Segment [Member] \| Operating Segments [Member]
Identifiable assets	149,062	132,169
Display Solutions Segment [Member] \| Operating Segments [Member]
Identifiable assets	$ 158,415	$ 147,354

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details