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Note 3 - Segment Reporting Information - Summarized Financial Information by Reportable Business Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Net Sales | $ 315,612 | $ 305,558
Operating income (loss) | 8,030 | 13,076
Capital expenditures | 2,233 | 2,739
Depreciation and amortization | 8,114 | 8,654
Segment Reconciling Items [Member] |  |
Operating income (loss) | (15,162) | (11,265)
Capital expenditures | 460 | 260
Depreciation and amortization | 283 | 504
Lighting Segment [Member] |  |
Net Sales | 189,000 | 206,199
Lighting Segment [Member] | Operating Segments [Member] |  |
Operating income (loss) | 13,328 | 16,123
Capital expenditures | 1,596 | 1,386
Depreciation and amortization | 6,306 | 6,714
Display Solutions Segment [Member] |  |
Net Sales | 126,612 | 99,359
Display Solutions Segment [Member] | Operating Segments [Member] |  |
Operating income (loss) | 9,864 | 8,218
Capital expenditures | 177 | 1,093
Depreciation and amortization | $ 1,525 | $ 1,436

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