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REGULATORY REQUIREMENTS AND MATTERS (Tables) | 12 Months Ended
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Dec. 31, 2015
Banking and Thrift [Abstract] |
Schedule of actual and required capital amounts and ratios | The following tables present the regulatory capital information of the Company and the Bank as of December 31, 2015 and 2014:
|  | December 31, 2015 |  | December 31, 2014
($ in thousands) |  | Basel III |  | Basel I
| Actual |  | Minimum Requirement |  | Well Capitalized Requirement |  | Actual |  | Minimum Requirement |  | Well Capitalized Requirement
| Amount |  | Ratio |  | Ratio |  | Ratio |  | Amount |  | Ratio |  | Ratio |  | Ratio
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 3,082,945 |  |  | 12.2 | % |  | 8.0 | % |  | 10.0 | % |  | $ | 2,753,599 |  |  | 12.6 | % |  | 8.0 | % |  | 10.0 | %
East West Bank |  | $ | 3,039,524 |  |  | 12.1 | % |  | 8.0 | % |  | 10.0 | % |  | $ | 2,590,173 |  |  | 11.8 | % |  | 8.0 | % |  | 10.0 | %
Tier I capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 2,686,627 |  |  | 10.7 | % |  | 6.0 | % |  | 8.0 | % |  | $ | 2,405,452 |  |  | 11.0 | % |  | 4.0 | % |  | 6.0 | %
East West Bank |  | $ | 2,754,201 |  |  | 11.0 | % |  | 6.0 | % |  | 8.0 | % |  | $ | 2,316,615 |  |  | 10.6 | % |  | 4.0 | % |  | 6.0 | %
CET1 capital (1) (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 2,650,413 |  |  | 10.5 | % |  | 4.5 | % |  | 6.5 | % |  | N/A |  |  | N/A |  |  | N/A |  |  | N/A |
East West Bank |  | $ | 2,754,201 |  |  | 11.0 | % |  | 4.5 | % |  | 6.5 | % |  | N/A |  |  | N/A |  |  | N/A |  |  | N/A |
Tier I leverage capital (to adjusted average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 2,686,627 |  |  | 8.5 | % |  | 4.0 | % |  | 5.0 | % |  | $ | 2,405,452 |  |  | 8.4 | % |  | 4.0 | % |  | 5.0 | %
East West Bank |  | $ | 2,754,201 |  |  | 8.8 | % |  | 4.0 | % |  | 5.0 | % |  | $ | 2,316,615 |  |  | 8.2 | % |  | 4.0 | % |  | 5.0 | %
Risk weighted assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 25,232,575 |  |  | N/A |  |  | N/A |  |  | N/A |  |  | $ | 21,931,486 |  |  | N/A |  |  | N/A |  |  | N/A |
East West Bank |  | $ | 25,129,885 |  |  | N/A |  |  | N/A |  |  | N/A |  |  | $ | 21,875,078 |  |  | N/A |  |  | N/A |  |  | N/A |
Adjusted quarterly average total assets (2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 31,458,517 |  |  | N/A |  |  | N/A |  |  | N/A |  |  | $ | 28,501,115 |  |  | N/A |  |  | N/A |  |  | N/A |
East West Bank |  | $ | 31,385,333 |  |  | N/A |  |  | N/A |  |  | N/A |  |  | $ | 28,418,340 |  |  | N/A |  |  | N/A |  |  | N/A |
(1) | CET1 capital measurement was introduced under the Basel III Capital Rules implemented during 2015.
(2) | Reflects adjusted average total assets for the three months ended December 31, 2015 and 2014.
N/A = not applicable

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958577-112826 + Details
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