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Regulatory Matters (Tables)
12 Months Ended
Dec. 31, 2018
Regulatory Matters Tables Abstract  
Schedule of regulatory capital requirements under banking regulations

The actual capital amounts and ratios for the Company and Bank as of December 31, 2018 and 2017 are presented in the table below: 

 

    Company     Bank           To Be Well
Capitalized Under
Prompt
    Actual     Actual     Minimum Required For   Corrective Action
(dollars in thousands)   Amount     Ratio     Amount     Ratio     Capital Adequacy Purposes   Regulations *
As of December 31, 2018                                    
CET1 capital (to risk weighted assets)   $ 1,007,438       12.49 %   $ 1,147,151       14.23 %     6.375 %     6.5 %
Total capital (to risk weighted assets)     1,297,427       16.08 %     1,217,140       15.10 %     9.875 %     10.0 %
Tier 1 capital (to risk weighted assets)     1,007,438       12.49 %     1,147,151       14.23 %     7.875 %     8.0 %
Tier 1 capital (to average assets)     1,007,438       12.10 %     1,147,151       13.78 %     5.000 %     5.0 %
                                                 
As of December 31, 2017                                                
CET1 capital (to risk weighted assets)   $ 845,123       11.23 %   $ 969,250       12.91 %     5.750 %     6.5 %
Total capital (to risk weighted assets)     1,129,954       15.02 %     1,033,554       13.76 %     9.250 %     10.0 %
Tier 1 capital (to risk weighted assets)     845,123       11.23 %     969,250       12.91 %     7.250 %     8.0 %
Tier 1 capital (to average assets)     845,123       11.45 %     969,250       13.15 %     5.000 %     5.0 %

  

*Applies to Bank only