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Note 10 - Industry Segments (Detail) - Industry Segments - Asset Information (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Identifiable assets $ 9,625 $ 10,105
Information Technology [Member]
   
Identifiable assets 1,725 1,791
Industrial Products [Member]
   
Identifiable assets 5,927 6,654
Operating Segments [Member]
   
Identifiable assets 7,652 8,445
Corporate [Member]
   
Identifiable assets $ 1,973 $ 1,660