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Note 2 - Business Segment Information - Summarized Financial Information by Reportable Business Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Net Sales | $ 305,558 | $ 328,852
Operating income (loss) | 13,076 | (19,890)
Capital expenditures | 2,739 | 2,618
Depreciation and amortization | 8,654 | 10,221
Corporate and Eliminations [Member] |  |
Operating income (loss) | (11,265) | (10,791)
Capital expenditures | 260 | 37
Depreciation and amortization | 504 | 979
Lighting Segment [Member] |  |
Net Sales | 206,199 | 235,114
Lighting Segment [Member] | Operating Segments [Member] |  |
Operating income (loss) | 16,123 | (12,211)
Capital expenditures | 1,386 | 2,239
Depreciation and amortization | 6,714 | 7,648
Graphics Segment [Member] |  |
Net Sales | 99,359 | 93,738
Graphics Segment [Member] | Operating Segments [Member] |  |
Operating income (loss) | 8,218 | 3,112
Capital expenditures | 1,093 | 342
Depreciation and amortization | $ 1,436 | $ 1,594

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