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Note 5 - Restructuring and Other Charges (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Restructuring and Related Costs [Table Text Block]
   
Thermonics
Relocation
 
Balance - January 1, 2012
  $ -  
Accruals for facility closure costs
    313  
Cash payments related to facility closure costs
    (359 )   
Refund of lease termination fees
     46  
Balance - December 31, 2012
  $ -