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Regulatory Capital Requirements (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Jan. 01, 2019
Jan. 01, 2016
Dec. 31, 2019
Dec. 31, 2018
REGULATORY CAPITAL REQUIREMENTS [Abstract]        
Capital conversation buffer (as a percent)   0.625% 2.50%  
Bank specific capital conversation buffer (as a percent)     5.87%  
Capital conservation buffer, Minimum ratios, as a percent     2.50%  
Due to affiliate, current     $ 0.0 $ 0.0
Common Equity Tier 1 required for capital adequacy purposes, ratio (as a percent)     7.00%  
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets     8.50%  
Capital Required for Capital Adequacy to Risk Weighted Assets     10.50%  
Tier One Leverage Capital Required for Capital Adequacy to Average Assets     4.00%  
Common Equity Tier 1 required for well capitalized to risk weighted assets (as a percent)     6.50%  
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets     8.00%  
Capital Required to be Well Capitalized to Risk Weighted Assets     10.00%  
Tier One Leverage Capital Required to be Well Capitalized to Average Assets     5.00%  
Payment of dividends     $ 0.0 $ 4.0
Common equity Tier 1 capital to risk-weighted assets minimum ratio     4.50%  
Common equity tier one risk based capital required for capital adequacy to risk weighted asset raised     6.00%  
Common equity tier one risk based capital required for capital adequacy to risk weighted asset total     4.00%  
Additional capital conservation buffer in percentage 0.625%      
Capital conservation buffer in percentage final 2.50%