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Note 12 - Segment Information (Detail) - Segment Information Identifiable Assets & Long Lived Assets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Identifiable assets $ 33,668 $ 31,237
1,246 1,134
Thermal Products [Member]
   
Identifiable assets 21,950 20,030
Mechanical Products [Member]
   
Identifiable assets 6,344 8,240
Electrical Products [Member]
   
Identifiable assets 5,374 2,967
UNITED STATES
   
U.S. 995 836
Foreign [Member]
   
Foreign $ 251 $ 298