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Note 3 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2013
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
   

Three Months Ended

September 30

   

Nine Months Ended

September 30,

 
   

2013

   

2012

   

2013

   

2012

 

Balance at beginning of period

  $ -     $ 923     $ -       902  

Losses included in earnings

    -       -       -       (11 )

Gains included in other comprehensive income

    -       -       -       32  

Balance as of September 30

  $ -     $ 923     $ -     $ 923