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Note 9 - Guarantees (Tables)
6 Months Ended
Jun. 30, 2013
Guarantees [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]

Balance - January 1, 2013

  $ 197  

Payments made under product warranty

    (55 )

Accruals for product warranty

    60  

Balance - June 30, 2013

  $ 202