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REGULATORY REQUIREMENTS (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Actual |  |
Total Capital (to Risk-Weighted Assets), Amount | $ 2,395,109,000 | $ 2,296,253,000
Tier I Capital (to Risk-Weighted Assets), Amount | 2,102,476,000 | 2,116,757,000
Tier I Capital (to Average Assets), Amount | 2,102,476,000 | 2,116,757,000
Total Capital (to Risk-Weighted Assets), Ratio (as a percent) | 13.50% | 16.10%
Tier I Capital (to Risk-Weighted Assets), Ratio (as a percent) | 11.90% | 14.80%
Tier I Capital (to Average Assets), Ratio (as a percent) | 8.60% | 9.60%
For Capital Adequacy Purposes |  |
Total Capital (to Risk-Weighted Assets), Amount | 1,416,203,000 | 1,142,743,000
Tier I Capital (to Risk-Weighted Assets), Amount | 708,102,000 | 571,371,000
Tier I Capital (to Average Assets), Amount | 976,596,000 | 880,526,000
Total Capital (to Risk-Weighted Assets), Ratio (as a percent) | 8.00% | 8.00%
Tier I Capital (to Risk-Weighted Assets), Ratio (as a percent) | 4.00% | 4.00%
Tier I Capital (to Average Assets), Ratio (as a percent) | 4.00% | 4.00%
Regulatory Requirements - Additional Disclosure |  |
Minimum total consolidated assets for exclusion of trust preferred securities as Tier I regulatory capital | 15,000,000,000 |
Trust preferred securities as a percentage of the Company's Tier I capital | 4.40% | 6.30%
East West Bank |  |
Actual |  |
Total Capital (to Risk-Weighted Assets), Amount | 2,262,494,000 | 2,225,888,000
Tier I Capital (to Risk-Weighted Assets), Amount | 2,041,894,000 | 2,046,477,000
Tier I Capital (to Average Assets), Amount | 2,041,894,000 | 2,046,477,000
Total Capital (to Risk-Weighted Assets), Ratio (as a percent) | 12.90% | 15.60%
Tier I Capital (to Risk-Weighted Assets), Ratio (as a percent) | 11.60% | 14.30%
Tier I Capital (to Average Assets), Ratio (as a percent) | 8.40% | 9.30%
For Capital Adequacy Purposes |  |
Total Capital (to Risk-Weighted Assets), Amount | 1,407,944,000 | 1,142,215,000
Tier I Capital (to Risk-Weighted Assets), Amount | 703,972,000 | 571,107,000
Tier I Capital (to Average Assets), Amount | 973,958,000 | 880,162,000
Total Capital (to Risk-Weighted Assets), Ratio (as a percent) | 8.00% | 8.00%
Tier I Capital (to Risk-Weighted Assets), Ratio (as a percent) | 4.00% | 4.00%
Tier I Capital (to Average Assets), Ratio (as a percent) | 4.00% | 4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions |  |
Total Capital (to Risk-Weighted Assets), Amount | 1,759,931,000 | 1,427,769,000
Tier I Capital (to Risk-Weighted Assets), Amount | 1,055,958,000 | 856,661,000
Tier I Capital (to Average Assets), Amount | 1,217,448,000 | 1,100,202,000
Total Capital (to Risk-Weighted Assets), Ratio (as a percent) | 10.00% | 10.00%
Tier I Capital (to Risk-Weighted Assets), Ratio (as a percent) | 6.00% | 6.00%
Tier I Capital (to Average Assets), Ratio (as a percent) | 5.00% | 5.00%
Reserve Requirement |  |
Daily average reserve requirement | $ 218,500,000 | $ 228,700,000

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- Definition The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: 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=7881181&loc=d3e65071-112826 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=7881181&loc=SL5958568-112826 + Details
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- Definition The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: 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=7881181&loc=d3e65071-112826 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=7881181&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 1B -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958570-112826 + Details
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- Definition The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 + Details
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- Definition Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital. + References Reference 1: 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=7881181&loc=d3e65071-112826 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=7881181&loc=SL5958568-112826 + Details
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- Definition The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: 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=7881181&loc=d3e65071-112826 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=7881181&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 1B -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958570-112826 + Details
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- Definition The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. + References Reference 1: 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=7881181&loc=SL5958568-112826 + Details
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