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Note 13 - Segment Information (Detail) - Segment Information Identifiable Assets & Long Lived Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Identifiable assets	$ 33,767	$ 31,237
	1,230	1,134
United States [Member]
U.S.	1,031	836
Foreign [Member]
Foreign	199	298
Thermal Products [Member]
Identifiable assets	21,234	20,030
Mechanical Products [Member]
Identifiable assets	7,024	8,240
Electrical Products [Member]
Identifiable assets	$ 5,509	$ 2,967

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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