Note 16 - Subsequent Event (Detail) - Assets and liabilities disposed of (USD $) In Thousands, unless otherwise specified	Jul. 30, 2011	Jul. 28, 2012 Disposal Of Power Conversion Business [Member]
Accounts receivable		$ 1,332
Inventories		1,720
Prepaid expenses (a)		73
Total current assets	25,716	3,125
Property plant and equipment, net (a)		443
Total assets		3,568
Total current liabilities (a)	$ 13,008	$ 1,002

For the disposal group, including a component of the entity (discontinued operation), the aggregate of amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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For the disposal group, including a component of the entity (discontinued operation), carrying value (net of accumulated depreciation and any write-downs) of tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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- Definition

Carrying value as of the balance sheet date of current obligations (due less than one year or one operating cycle, if longer) arising from the sale, disposal or planned sale in the near future (generally within one year) of a disposal group, including a component of the entity (discontinued operation).

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