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Note 10 - Guarantees (Tables)
6 Months Ended
Jun. 30, 2012
Schedule of Product Warranty Liability [Table Text Block]
Balance - January 1, 2012
  $ 214  
Acquisition of Thermonics
    67  
Payments made under product warranty
    (90 )
Accruals for product warranty
    55  
Balance - June 30, 2012
  $ 246