Note 6 - Goodwill and Other Intangible Assets (Details) (USD $)	12 Months Ended		6 Months Ended	0 Months Ended	6 Months Ended	0 Months Ended													3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2012 Not Tested for Goodwill Impairment [Member]	Mar. 01, 2013 LSI Virticus [Member]	Dec. 31, 2012 LSI Virticus [Member]	Jun. 30, 2014 Electronics Components Segment [Member]	Jun. 30, 2014 Electronics Components Segment [Member]	Mar. 01, 2014 Electronics Components Segment [Member]	Jun. 30, 2013 Electronics Components Segment [Member]	Mar. 01, 2013 Electronics Components Segment [Member]	Jun. 30, 2014 All Other Category [Member]	Mar. 01, 2014 All Other Category [Member]	Jun. 30, 2013 All Other Category [Member]	Mar. 01, 2013 All Other Category [Member]	Jun. 30, 2014 Lighting Segment [Member]	Mar. 01, 2014 Lighting Segment [Member]	Jun. 30, 2013 Lighting Segment [Member]	Mar. 01, 2013 Lighting Segment [Member]	Sep. 30, 2013 Intellectual Property [Member]
Note 6 - Goodwill and Other Intangible Assets (Details) [Line Items]
Goodwill	$ 10,508,000	$ 10,508,000			$ 2,413,000		$ 9,208,000		$ 9,208,000		$ 1,165,000		$ 1,165,000		$ 135,000		$ 135,000
Goodwill, Impairment Loss				272,000	2,141,000
Goodwill Impairment, Percentage					89.00%
Number of Reportable Segments	3		3
Goodwill Impairment Testing, Value Above Carrying Value								18,200,000		10,500,000		2,500,000		2,100,000		2,500,000		8,500,000
Goodwill Impairment Testing, Percent Value Above Carrying Value								71.00%		42.00%		453.00%		182.00%		3.00%		10.00%
Impairment of Intangible Assets, Finite-lived						805,000
Payments to Acquire Intangible Assets																			$ 268,000
Finite-Lived Intangible Asset, Useful Life																			9 years