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Note 6 - Guarantees (Tables)
6 Months Ended
Jun. 30, 2015
Guarantees [Abstract]  
Schedule of Product Warranty Liability [Table Text Block]
Accrued warranty obligations as of December 31, 2014
  $ 5  
Actual warranty experience during 2015
    (4 )
2015 warranty provisions
    4  
Accrued warranty obligations as of June 30, 2015
  $ 5  
         
Deferred Revenue, by Arrangement, Disclosure [Table Text Block]
Deferred revenue on extended warranties as of December 31, 2014
  $ 27  
New extended warranty and maintenance arrangements in 2015
    94  
Recognition of extended warranty and maintenance arrangement revenue in 2015
    (94 )
Deferred revenue on extended warranties as of June 30, 2015
  $ 27