Note 7 - Goodwill And Other Intangible Assets (Detail) (USD $)	3 Months Ended
Sep. 30, 2011	Mar. 31, 2012 Electronics Components Segment [Member]	Mar. 31, 2012 All Other Category [Member]	Mar. 31, 2012 Lighting Segment [Member]
Goodwill and Intangible Asset Impairment	$ 258,000
Goodwill Impairment Testing Value Above Carrying Value		$ 7,700,000	$ 1,800,000	$ 28,800,000
Goodwill Impairment Testing Percent Value Above Carring Value		33.00%	155.00%	32.00%

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

No definition available.

Name:	us-gaap_GoodwillAndIntangibleAssetImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration