Note 17 - Accumulated Other Comprehensive Income (Loss) - Activity in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accumulated other comprehensive income (loss) $ (2,863) $ (1,475)  
Other comprehensive income (loss) before reclassifications (1,011) (1,612)  
Amounts reclassified from accumulated other comprehensive income (loss) 2,323 224  
Change in the accumulated loss on terminated cash flow hedge derivatives (1,731)    
Transfer of securities from available for sale to held to maturity  
Net other comprehensive income (loss) during the period (419) (1,388) $ 3,327
Accumulated other comprehensive income (loss) (3,282) (2,863) (1,475)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]      
Accumulated other comprehensive income (loss) 564 1,313  
Other comprehensive income (loss) before reclassifications 3,368 (498)  
Amounts reclassified from accumulated other comprehensive income (loss) 54 (34)  
Change in the accumulated loss on terminated cash flow hedge derivatives    
Transfer of securities from available for sale to held to maturity (314) (217)  
Net other comprehensive income (loss) during the period 3,108 (749)  
Accumulated other comprehensive income (loss) 3,672 564 1,313
Securities Transferred from Available-for-Sale to Held-to-Maturity [Member]      
Accumulated other comprehensive income (loss) (1,065) (1,282)  
Other comprehensive income (loss) before reclassifications  
Amounts reclassified from accumulated other comprehensive income (loss)  
Change in the accumulated loss on terminated cash flow hedge derivatives    
Transfer of securities from available for sale to held to maturity 314 217  
Net other comprehensive income (loss) during the period 314 217  
Accumulated other comprehensive income (loss) (751) (1,065) (1,282)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]      
Accumulated other comprehensive income (loss) (2,362) (1,506)  
Other comprehensive income (loss) before reclassifications (4,379) (1,114)  
Amounts reclassified from accumulated other comprehensive income (loss) 2,269 258  
Change in the accumulated loss on terminated cash flow hedge derivatives (1,731)    
Transfer of securities from available for sale to held to maturity  
Net other comprehensive income (loss) during the period (3,841) (856)  
Accumulated other comprehensive income (loss) $ (6,203) $ (2,362) $ (1,506)