Regulatory Capital (Tables)

9 Months Ended

Sep. 30, 2018

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The following table summarizes the Company’s and the Bank’s regulatory capital ratios at September 30, 2018 and December 31, 2017, as well as the minimum regulatory capital ratios required for the Bank to be deemed “well-capitalized.” 

	At September 30, 2018				Required for capital adequacy purposes effective								To be well-capitalized under prompt corrective action regulations
	Company		Bank		January 1, 2018				January 1, 2019				Bank
Leverage ratio	9.74	%	9.35	%	4.000	%			4.00	%			5.00	%
CET1	11.15	%	11.52	%	6.375	%	(1	)	7.00	%	(2	)	6.50	%
Tier I risk-based capital ratio	12.00	%	11.52	%	7.875	%	(1	)	8.50	%	(2	)	8.00	%
Total risk-based capital ratio	13.25	%	12.77	%	9.875	%	(1	)	10.50	%	(2	)	10.00	%
(1) Includes 1.875% capital conservation buffer.
(2) Includes 2.5% capital conservation buffer.

	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	%	(3	)	7.00	%	(4	)	6.50	%
Tier I risk-based capital ratio	11.75	%	11.33	%	7.250	%	(3	)	8.50	%	(4	)	8.00	%
Total risk-based capital ratio	12.87	%	12.50	%	9.250	%	(3	)	10.50	%	(4	)	10.00	%
(3) Includes 1.25% capital conservation buffer.
(4) Includes 2.5% capital conservation buffer.