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Note 6 - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Tables)
 9 Months Ended
Sep. 30, 2014
Disclosure Text Block [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
Nine Months
Ended
September 30,
2014 (*)
 
   
Unrealized
Gain and Loss
on Cash Flow
Hedges
 
Beginning Balance
  $ 117  
Other comprehensive loss before reclassification
    (175 )
Amounts reclassified from accumulated other comprehensive income (loss)
    (15 )
Net current-period other comprehensive loss
    (190 )
Ending Balance
  $ (73 )
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
   
Amount Reclassified From Accumulated
Other Comprehensive Income (loss) (*)
   
   
Three Months Ended
September 30,
   
Nine Months Ended
September 30,
   
Details About Accumulated Other Comprehensive Income (loss) Components
   
2014
     
2013
     
2014
     
2013
  Statement of
Operations
Classification
Realized gains (losses) on available-for sale securities
  $ -     $ (11
)
 
$
-    
$
472  
Gain on sale of securities
Less: Income tax (expense) benefit
   
-
     
4
     
-
     
(172
)
Income tax
(expense) benefit
Total reclassification related to available-for-sale securities
 
$
-
   
$
(7
)
 
$
-
   
$
300
 
Net income (loss)
                                   
Realized gains and (losses) on cash flow hedges
 
$
(14
)
 
$
44
   
$
15
   
$
47
 
Cost of revenues
Less: Income tax expense
   
-
     
(16
)
   
-
     
(17
)
Income tax
(expense) benefit
Total reclassification related to cash flow hedges
 
$
(14
)
 
$
28
   
$
15
   
$
30
 
Net income (loss)