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Note 5 - Accumulated Other Comprehensive Income (Details) - Changes in Accumulated Other Comprehensive Income (Loss) by Component Net of Tax (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Changes in Accumulated Other Comprehensive Income (Loss) by Component Net of Tax [Abstract]    
Balance $ (2,237) [1] $ 5,391 [1]
Other comprehensive Income (loss) before reclassification 1,847 [1] (1,004) [1]
Amount reclassified from accumulated other comprehensive income (loss) 4 [1] (122) [1]
Period change 1,851 [1] (1,126) [1]
Balance $ (386) [1] $ 4,265 [1]
[1] All amounts are net of tax. Amounts in parentheses indicate debits.