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SECURITIES - Securities available for sale (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost $ 344,480 $ 277,323  
Estimated Fair Value 344,820 280,507  
Unrealized Gains 2,104 3,400  
Unrealized Losses 1,764 216  
Amortized Cost      
Within one year 49,359    
After one, but within five years 68,076    
After five, but within ten years 26,437    
After ten years 0    
Total 344,195    
Fair Value      
Within one year 49,621    
After one, but within five years 68,847    
After five, but within ten years 26,876    
After ten years 0    
Total 344,357    
Proceeds from sales and calls of securities resulting in gains or losses [Abstract]      
Proceeds 72,718 36,258 $ 2,650
Gross gains 410 6,869 16
Gross losses (38) 0 0
Gross losses 142 2,641 $ 6
Obligations of U.S. Government and U.S. Government sponsored enterprises      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 99,430 180,535  
Estimated Fair Value 100,166 181,673  
Unrealized Gains 752 1,300  
Unrealized Losses 16 162  
Mortgage-backed securities, residential      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 199,680 60,787  
Estimated Fair Value 198,366 61,660  
Unrealized Gains 427 892  
Unrealized Losses 1,741 19  
Amortized Cost      
Without single maturity date 199,680    
Fair Value      
Without single maturity date 198,366    
Collateralized mortgage obligations      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 0 335  
Estimated Fair Value 0 338  
Unrealized Gains 0 3  
Unrealized Losses 0 0  
Obligations of states and political subdivisions      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 43,695 30,677  
Estimated Fair Value 44,426 31,451  
Unrealized Gains 737 802  
Unrealized Losses 6 28  
Corporate bonds and notes      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 747 1,502  
Estimated Fair Value 752 1,533  
Unrealized Gains 5 35  
Unrealized Losses 0 4  
SBA loan pools      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 643 1,296  
Estimated Fair Value 647 1,304  
Unrealized Gains 5 11  
Unrealized Losses 1 3  
Amortized Cost      
Without single maturity date 643    
Fair Value      
Without single maturity date 647    
Trust preferred securities      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 0 1,906  
Estimated Fair Value 0 2,028  
Unrealized Gains 0 122  
Unrealized Losses 0 0  
Corporate stocks      
Amortized cost and estimated fair value of securities available for sale [Abstract]      
Amortized Cost 285 285  
Estimated Fair Value 463 520  
Unrealized Gains 178 235  
Unrealized Losses $ 0 $ 0