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Note 6 - Changes in Accumulated Other Comprehensive Income by Component (Details) - Reclassifcation Out of Component of Accumulated Other Comprehensive Income (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Note 6 - Changes in Accumulated Other Comprehensive Income by Component (Details) - Reclassifcation Out of Component of Accumulated Other Comprehensive Income [Line Items]        
Realized gains on available-for sale securities       $ 500
Amounts Reclassified From OCI [Member]
        
Note 6 - Changes in Accumulated Other Comprehensive Income by Component (Details) - Reclassifcation Out of Component of Accumulated Other Comprehensive Income [Line Items]        
Realized gains on available-for sale securities    [1] 1 [1]   483
Less: Income tax expense    [1]    [1]   (174)
Total reclassification related to available-for-sale securities    [1] 1 [1]   309
Realized gains and losses on cash flow hedges 16 [1] (23) [1] 30 3
Less: Income tax (expense) benefit    [1] 8 [1]   (1)
Total reclassification related to cash flow hedges $ 16 [1] $ (15) [1] $ 30 $ 2
[1] Amounts in parentheses represent reductions to earnings in the statement of operations.