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Regulatory Capital Requirements (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Common equity tier 1 capital to risk-weighted assets |  |
Actual Amount | $ 1,653,480 | $ 1,569,004
Actual Ratio (as a percent) | 12.71% | 12.75%
Minimum Capital Ratio (as a percent) | 4.50% | 4.50%
Well-Capitalized Ratio (as a percent) | 6.50% | 6.50%
Tier 1 capital to risk-weighted assets |  |
Actual Amount | $ 1,653,480 | $ 1,569,004
Actual Ratio (as a percent) | 12.71% | 12.75%
Minimum Capital Ratio (as a percent) | 6.00% | 6.00%
Well-Capitalized Ratio (percent) | 8.00% | 8.00%
Total capital to risk-weighted assets |  |
Actual Amount | $ 1,791,407 | $ 1,705,098
Actual Ratio (as a percent) | 13.77% | 13.85%
Minimum Capital Ratio (as a percent) | 8.00% | 8.00%
Well-Capitalized Ratio (as a percent) | 10.00% | 10.00%
Tier 1 capital to average assets (leverage ratio) |  |
Actual Amount | $ 1,653,480 | $ 1,569,004
Actual Ratio | 8.66% | 8.36%
Minimum Capital Ratio (as a percent) | 4.00% | 4.00%
Well-Capitalized Ratio (percent) | 5.00% | 5.00%
First Hawaiian Bank |  |
Common equity tier 1 capital to risk-weighted assets |  |
Actual Amount | $ 1,645,372 | $ 1,533,056
Actual Ratio (as a percent) | 12.67% | 12.51%
Tier 1 capital to risk-weighted assets |  |
Actual Amount | $ 1,645,372 | $ 1,533,063
Actual Ratio (as a percent) | 12.67% | 12.51%
Total capital to risk-weighted assets |  |
Actual Amount | $ 1,783,299 | $ 1,669,157
Actual Ratio (as a percent) | 13.73% | 13.62%
Tier 1 capital to average assets (leverage ratio) |  |
Actual Amount | $ 1,645,372 | $ 1,533,063
Actual Ratio | 8.63% | 8.19%

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- Definition The minimum Common Equity Tier 1 capital ratio (Common Equity Tier 1 divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition The Common Equity Tier 1 capital ratio required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition The amount of total capital as defined in the regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 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 948 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998 + 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 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: 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 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=35709795&loc=SL5958570-112826 + Details
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- Definition The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in 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=35709795&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 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: 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 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 + Details
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