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Note 14 - Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Balance at Beginning of Year $ (789) $ (643)  
Before Reclassifications - Net of Tax (1,694) (136)  
Realized - Net of Tax 153 (10)  
Other Comprehensive Income (Loss) (1,541) (146) $ 2,404
Balance at End of Year $ (2,330) $ (789) $ (643)