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Regulatory Matters (Tables)
12 Months Ended
Dec. 31, 2019
Banking and Thrift [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations
The Corporation's and Bank's actual and required capital ratios as of December 31, 2019 and December 31, 2018 under regulatory capital rules were as follows.
ActualFor Capital Adequacy
Purposes
To Be Well-Capitalized
Under Prompt
Corrective Action
Provisions
(Dollars in thousands)AmountRatioAmountRatioAmount  Ratio  
At December 31, 2019
Total Capital (to Risk-Weighted Assets):
Corporation$655,010  13.78 %$380,276  8.00 %$475,344  10.00 %
Bank552,142  11.66  378,724  8.00  473,405  10.00  
Tier 1 Capital (to Risk-Weighted Assets):
Corporation524,137  11.03  285,207  6.00  380,276  8.00  
Bank516,087  10.90  284,043  6.00  378,724  8.00  
Tier 1 Common Capital (to Risk-Weighted Assets):
Corporation524,137  11.03  213,905  4.50  308,974  6.50  
Bank516,087  10.90  213,032  4.50  307,713  6.50  
Tier 1 Capital (to Average Assets):
Corporation524,137  10.02  209,330  4.00  261,663  5.00  
Bank516,087  9.90  208,589  4.00  260,737  5.00  
At December 31, 2018
Total Capital (to Risk-Weighted Assets):
Corporation$604,213  13.70 %$352,764  8.00 %$440,955  10.00 %
Bank506,728  11.54  351,220  8.00  439,026  10.00  
Tier 1 Capital (to Risk-Weighted Assets):
Corporation479,550  10.88  264,573  6.00  352,764  8.00  
Bank476,639  10.86  263,415  6.00  351,220  8.00  
Tier 1 Common Capital (to Risk-Weighted Assets):
Corporation479,550  10.88  198,430  4.50  286,621  6.50  
Bank476,639  10.86  197,561  4.50  285,367  6.50  
Tier 1 Capital (to Average Assets):
Corporation479,550  10.13  189,374  4.00  236,718  5.00  
Bank476,639  10.12  188,487  4.00  235,609  5.00