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Note 9 - Guarantees (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Product Warranty Liability [Table Text Block]

Balance - January 1, 2012

  $ 214

Acquisition of Thermonics

    67

Payments made under product warranty

    (124 )

Accruals for product warranty

    68

Balance - September 30, 2012

  $ 225