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SECURITIES - Amortized cost and fair value of debt securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Available-For-Sale - Estimated fair value    
Fair Value $ 305,578 $ 316,054
Other mortgage backed debt securities [Member]    
Available-For-Sale - Amortized cost    
Within 1 Year [1] 0  
1 - 5 Years [1] 0  
5 - 10 Years [1] 0  
After 10 Years [1] 6,534  
Total [1] 6,534  
Available-For-Sale - Estimated fair value    
Within 1 Year [1] 0  
1 - 5 Years [1] 0  
5 - 10 Years [1] 0  
After 10 Years [1] 6,496  
Fair Value 6,496 [1] 4,749
U.S. Treasury securities [Member]    
Available-For-Sale - Amortized cost    
Within 1 Year 5,332  
1 - 5 Years 0  
5 - 10 Years 0  
After 10 Years 0  
Total 5,332  
Available-For-Sale - Estimated fair value    
Within 1 Year 5,339  
1 - 5 Years 0  
5 - 10 Years 0  
After 10 Years 0  
Fair Value 5,339 5,295
US Government Corporations & Agencies Obligations [Member]    
Available-For-Sale - Amortized cost    
Within 1 Year [1] 0  
1 - 5 Years [1] 16,722  
5 - 10 Years [1] 33,895  
After 10 Years [1] 52,464  
Total [1] 103,081  
Available-For-Sale - Estimated fair value    
Within 1 Year [1] 0  
1 - 5 Years [1] 16,743  
5 - 10 Years [1] 33,823  
After 10 Years [1] 52,550  
Fair Value [1] 103,116  
Obligations of state and political subdivisions [Member]    
Available-For-Sale - Amortized cost    
Within 1 Year 1,001  
1 - 5 Years 21,676  
5 - 10 Years 30,837  
After 10 Years 90,926  
Total 144,440  
Available-For-Sale - Estimated fair value    
Within 1 Year 1,001  
1 - 5 Years 22,057  
5 - 10 Years 31,620  
After 10 Years 95,154  
Fair Value 149,832 182,278
Asset-backed Securities [Member]    
Available-For-Sale - Amortized cost    
Within 1 Year 0  
1 - 5 Years 0  
5 - 10 Years 10,037  
After 10 Years 3,808  
Total 13,845  
Available-For-Sale - Estimated fair value    
Within 1 Year 0  
1 - 5 Years 0  
5 - 10 Years 10,070  
After 10 Years 3,842  
Fair Value 13,912 14,370
Corporate debt securities [Member]    
Available-For-Sale - Amortized cost    
Within 1 Year 0  
1 - 5 Years 27,134  
5 - 10 Years 0  
After 10 Years 0  
Total 27,134  
Available-For-Sale - Estimated fair value    
Within 1 Year 0  
1 - 5 Years 26,883  
5 - 10 Years 0  
After 10 Years 0  
Fair Value $ 26,883 $ 26,243
[1] 1Mortgage-backed securities are allocated for maturity reporting at their original maturity date.