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Note 5 - Accumulated Other Comprehensive Income (Details) - Significant Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income (Loss) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Unrealized gains on available-for-sale securities        
$ $ 64 $ (10) $ 58 $ 175
(22) 3 (20) (60)
$ $ 42 $ (7) $ 38 $ 115