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v2.4.1.9

Regulatory Capital Matters (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Common equity tier 1 capital ratio |  |
Amount | $ 391,714 banc_TierOneRiskBasedCommonCapital |
Ratio | 9.01%banc_TierOneRiskBasedCommonCapitaltoRiskWeightedAssets |
Minimum Capital Requirement | 195,659 banc_TierOneRiskBasedCommonCapitalRequiredforCapitalAdequacy |
Ratio | 4.50%banc_TierOneRiskBasedCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets |
Parent Company [Member] |  |
Total risk-based capital ratio |  |
Amount | 502,054 us-gaap_Capital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 473,656 us-gaap_Capital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Ratio | 11.55%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 11.28%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Minimum Capital Requirement | 347,838 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 335,829 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Ratio | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Tier 1 risk-based capital ratio |  |
Amount | 470,808 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 442,307 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Ratio | 10.83%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 10.54%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Minimum Capital Requirement | 260,879 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 167,914 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Ratio | 6.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Tier 1 leverage ratio |  |
Amount | 470,808 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 442,307 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Ratio | 7.99%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 8.57%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Minimum Capital Requirement | 235,611 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 206,502 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Ratio | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Banc Of California National Association [Member] |  |
Total risk-based capital ratio |  |
Amount | 589,547 us-gaap_Capital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 503,727 us-gaap_Capital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 13.58%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 12.04%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Minimum Capital Requirement | 347,348 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 334,834 us-gaap_CapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 8.00%us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions | 434,185 us-gaap_CapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 418,543 us-gaap_CapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 10.00%us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Tier 1 risk-based capital ratio |  |
Amount | 558,301 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 472,378 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 12.86%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 11.29%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Minimum Capital Requirement | 260,511 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 167,417 us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 6.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 4.00%us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions | 347,348 us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 251,126 us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 8.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 6.00%us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Common equity tier 1 capital ratio |  |
Amount | 558,301 banc_TierOneRiskBasedCommonCapital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember |
Ratio | 12.86%banc_TierOneRiskBasedCommonCapitaltoRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember |
Minimum Capital Requirement | 195,383 banc_TierOneRiskBasedCommonCapitalRequiredforCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember |
Ratio | 4.50%banc_TierOneRiskBasedCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember |
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions | 282,220 banc_TierOneRiskBasedCommonCapitalRequiredtobeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember |
Ratio | 6.50%banc_TierOneRiskBasedCommonCapitalRequiredtobeWellCapitalizedtoRiskWeightedAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember |
Tier 1 leverage ratio |  |
Amount | 558,301 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 472,378 us-gaap_TierOneLeverageCapital / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 9.49%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 9.17%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Minimum Capital Requirement | 235,344 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 206,095 us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacy / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 4.00%us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions | $ 294,180 us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | $ 257,619 us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalized / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember
Ratio | 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember | 5.00%us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets / dei_LegalEntityAxis = banc_BancOfCaliforniaNationalAssociationMember

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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 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=35709795&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=35709795&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=35709795&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=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 1B -URI http://asc.fasb.org/extlink&oid=35709795&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=35709795&loc=SL5958568-112826 + 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 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=35709795&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=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage 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=35709795&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=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations. + 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=35709795&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=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 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 + Details
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- Definition The amount of Tier 1 Leverage Capital 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=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Risk Based 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=35709795&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=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 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&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=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 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 + Details
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- Definition The amount of Tier 1 Risk Based Capital 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=35709795&loc=SL5958568-112826 + 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=35709795&loc=SL5958568-112826 + Details
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- Definition Tier 1 capital divided by risk weighted assets as defined by regulations. + 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=35709795&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=35709795&loc=SL5958568-112826 + Details
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