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Regulatory Capital (Tables)
 12 Months Ended
Dec. 31, 2017
Regulatory Capital Requirements [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations
 
 
At December 31, 2017
 
Required for capital
adequacy purposes effective
 
To be well-capitalized under prompt corrective action regulations
 
 
Company
 
Bank
 
January 1, 2017
 
January 1, 2019
 
Bank
Leverage ratio
 
9.37
%
 
9.03
%
 
4.000
%
 
4.00
%
 
5.00
%
CET1
 
10.81
%
 
11.33
%
 
5.750
%
(1
)
7.00
%
(2
)
6.50
%
Tier I risk-based capital ratio
 
11.75
%
 
11.33
%
 
7.250
%
(1
)
8.50
%
(2
)
8.00
%
Total risk-based capital ratio
 
12.87
%
 
12.50
%
 
9.250
%
(1
)
10.50
%
(2
)
10.00
%
 
 
 
 
 
 
 
 
 
 
 
(1) Includes 1.25% capital conservation buffer.
 
 
 
 
 
 
(2) Includes 2.5% capital conservation buffer.
 
 
 
 
 
 
 
 
 
At December 31, 2016
 
Required for capital
adequacy purposes effective
 
To be well-capitalized under prompt corrective action regulations
 
 
Company
 
Bank
 
January 1, 2016
 
January 1, 2019
 
Bank
Leverage ratio
 
9.73
%
 
9.50
%
 
4.000
%
 
4.00
%
 
5.00
%
CET1
 
11.49
%
 
12.23
%
 
5.125
%
(3
)
7.00
%
(4
)
6.50
%
Tier I risk-based capital ratio
 
12.58
%
 
12.23
%
 
6.625
%
(3
)
8.50
%
(4
)
8.00
%
Total risk-based capital ratio
 
13.84
%
 
13.48
%
 
8.625
%
(3
)
10.50
%
(4
)
10.00
%
 
 
 
 
 
 
 
 
 
 
 
(3) Includes 0.625% capital conservation buffer.
 
 
 
 
 
 
(4) Includes 2.5% capital conservation buffer..