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Note 20 - Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2012
Fair Value, by Balance Sheet Grouping [Table Text Block]
   
December 31
 
   
2012
   
2011
 
   
Carrying
   
Fair
   
Carrying
   
Fair
 
   
Amount
   
Value
   
Amount
   
Value
 
Assets
                       
Cash and cash equivalents
  $ 27,898     $ 27,898     $ 32,562     $ 32,562  
Restricted cash
    177       177       169       169  
Short-term investments
    69,427       69,427       93,016       93,016  
Long-term investments in available-for-sale securities
    943       943       791       791  
Restricted assets
    10,000       10,000       -       -