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Note 7 - Industry Segments (Detail) - Industry Segments - Asset Information (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Identifiable assets	$ 9,903	$ 9,936
Information Technology [Member]
Identifiable assets	1,179	1,712
Industrial Products [Member]
Identifiable assets	6,760	6,250
Operating Segments [Member]
Identifiable assets	7,939	7,962
Corporate [Member]
Identifiable assets	$ 1,964	$ 1,974

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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