Note 3 - Segment Reporting Information - Summarized Financial Information by Reportable Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Net sales	$ 89,541	$ 92,305	$ 174,498	$ 179,771
Operating income (loss)	(20,271)	4,547	(17,337)	(20,267)
Capital expenditures	931	692	1,579	1,190
Depreciation and amortization	2,592	2,552	5,235	5,124
Corporate and Eliminations [Member]
Operating income (loss)	(2,680)	(2,983)	(5,983)	(6,343)
Capital expenditures	94	36	200	91
Depreciation and amortization	243	283	501	575
Lighting Segment [Member]
Net sales	63,654	69,174	125,086	137,602
Lighting Segment [Member] \| Operating Segments [Member]
Operating income (loss)	(18,452)	5,275	(14,602)	(17,655)
Capital expenditures	588	499	864	760
Depreciation and amortization	1,952	1,885	3,942	3,786
Graphics Segment [Member]
Net sales	25,887	23,131	49,412	42,169
Graphics Segment [Member] \| Operating Segments [Member]
Operating income (loss)	861	2,255	3,248	3,731
Capital expenditures	249	157	515	339
Depreciation and amortization	$ 397	$ 384	$ 792	$ 763

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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