Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY (Narrative) (Details)

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STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Reclassifications of unrealized gains (losses) on AFS     $ 7,675 $ 383 $ 800
Accounting Standards Update 2017-12          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Reclassifications of unrealized gains (losses) on AFS $ 400        
Accounting Standards Update 2018-02          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Amounts reclassified from accumulated other comprehensive income $ (107)        
Accounting Standards Update 2016-01          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Amounts reclassified from accumulated other comprehensive income   $ (61)      
Serial Preferred Stock          
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Preferred stock, shares authorized     500,000    
Preferred stock, par value (usd per share)     $ 10.00    
Preferred stock, shares issued     0 0  
Preferred stock, shares outstanding     0 0