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Note 3 - Segment Reporting Information - Summarized Financial Information by Reportable Business Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Net Sales | $ 76,387 | $ 82,377 | $ 146,393 | $ 171,078
Operating income (loss) | 2,686 | 1,760 | 4,888 | 8,599
Capital expenditures | 475 | 764 | 880 | 1,119
Depreciation and amortization | 1,990 | 2,152 | 4,023 | 4,551
Segment Reconciling Items [Member] |  |  |  |
Operating income (loss) | (2,591) | (2,752) | (5,800) | (6,089)
Capital expenditures | 160 | 162 | 169 | 187
Depreciation and amortization | 76 | 117 | 132 | 352
Lighting Segment [Member] |  |  |  |
Net Sales | 45,126 | 53,436 | 90,531 | 116,627
Lighting Segment [Member] | Operating Segments [Member] |  |  |  |
Operating income (loss) | 2,134 | 3,150 | 5,722 | 12,309
Capital expenditures | 275 | 557 | 644 | 887
Depreciation and amortization | 1,610 | 1,661 | 3,229 | 3,439
Graphics Segment [Member] |  |  |  |
Net Sales | 31,261 | 28,941 | 55,862 | 54,451
Graphics Segment [Member] | Operating Segments [Member] |  |  |  |
Operating income (loss) | 3,143 | 1,362 | 4,966 | 2,379
Capital expenditures | 40 | 45 | 67 | 45
Depreciation and amortization | $ 304 | $ 374 | $ 662 | $ 760

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