Note 7 - Goodwill And Other Intangible Assets (Detail) (USD $)	3 Months Ended			9 Months Ended			9 Months Ended									1 Months Ended	6 Months Ended
	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012	Mar. 31, 2013 Electronics Components Segment [Member]	Jun. 30, 2012 Electronics Components Segment [Member]	Mar. 31, 2012 Electronics Components Segment [Member]	Mar. 31, 2013 All Other Category [Member]	Jun. 30, 2012 All Other Category [Member]	Mar. 31, 2012 All Other Category [Member]	Mar. 31, 2013 Lighting Segment [Member]	Jun. 30, 2012 Lighting Segment [Member]	Mar. 31, 2012 Lighting Segment [Member]	Mar. 31, 2013 LSI Virticus [Member]	Dec. 31, 2012 LSI Virticus [Member]
Goodwill, Impairment Loss	$ 272,000	$ 258,000		$ 2,413,000	$ 258,000		$ 2,413,000									$ 272,000	$ 2,141,000
Goodwill Impairment Testing Value Above Carrying Value							10,500,000		7,700,000	2,100,000		1,800,000	8,500,000		28,800,000
Goodwill Impairment Testing Percent Value Above Carring Value							42.00%		33.00%	182.00%		155.00%	10.00%		32.00%
Goodwill	10,508,000			10,508,000		12,921,000	9,208,000	11,621,000		1,165,000	1,165,000		135,000	135,000			2,413,000
Goodwill Impairment Percentage																	89.00%
Amortization of Intangible Assets	$ 576,000		$ 648,000	$ 1,917,000	$ 1,940,000