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Regulatory Capital (Tables) | 12 Months Ended
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Dec. 31, 2018
Banking and Thrift [Abstract] |
Schedule of compliance with regulatory capital requirements | The following capital amounts and ratios are based upon the Bank’s assets.
|  | Actual |  | “Well Capitalized” Regulatory Requirements
|  | Amount | Ratio |  | Amount |  | Ratio
As of December 31, 2018: |  |  |  |  |  |  |
Common Equity Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 2,896,091 |  | 12.1 | % |  | $ | 1,558,174 |  | > | 6.5 | %
Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 2,896,091 |  | 12.1 | % |  | $ | 1,917,752 |  | > | 8.0 | %
Total Capital (to Risk-Weighted Assets) |  | $ | 3,196,279 |  | 13.3 | % |  | $ | 2,397,190 |  | > | 10.0 | %
Tier 1 Capital (to Average Assets) |  | $ | 2,896,091 |  | 11.1 | % |  | $ | 1,299,032 |  | > | 5.0 | %
As of December 31, 2017: |  |  |  |  |  |  |
Common Equity Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 2,350,081 |  | 11.9 | % |  | $ | 1,288,435 |  | > | 6.5 | %
Tier 1 Capital (to Risk-Weighted Assets) |  | $ | 2,350,081 |  | 11.9 | % |  | $ | 1,585,767 |  | > | 8.0 | %
Total Capital (to Risk-Weighted Assets) |  | $ | 2,597,926 |  | 13.1 | % |  | $ | 1,982,208 |  | > | 10.0 | %
Tier 1 Capital (to Average Assets) |  | $ | 2,350,081 |  | 11.0 | % |  | $ | 1,067,739 |  | > | 5.0 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958577-112826 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958570-112826 + Details
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