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Note 13 - Accumulated Other Comprehensive Income (Details) - Activity in Accumulated Other Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Accumulated other comprehensive income (loss) $ (478)     $ (2,567)     $ (478) $ (2,567) $ (2,392) $ 1,258
Comprehensive income (loss) 429 (181) 1,666 (2,260) (1,747) 182 1,914 (3,825) (3,650)  
Unrealized Gains on Securities [Member]
                   
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Accumulated other comprehensive income (loss) 1,359     (2,099)     1,359 (2,099) (1,809) 2,189
Comprehensive income (loss) 267 1,115 1,786 (2,110) (2,397) 219        
Unrealized Gains on Derivatives [Member]
                   
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Accumulated other comprehensive income (loss) (1,837)     (468)     (1,837) (468) (583) (931)
Comprehensive income (loss) $ 162 $ (1,296) $ (120) $ (150) $ 650 $ (37)