REGULATORY CAPITAL MATTERS (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Banc of California, Inc.
Total risk-based capital ratio
Amount	$ 840,448	$ 635,291
Ratio	13.59%	11.18%
Minimum Capital Requirement	$ 494,858	$ 454,515
Ratio	8.00%	8.00%
Tier 1 risk-based capital ratio
Amount	$ 814,569	$ 608,644
Ratio	13.17%	10.71%
Minimum Capital Requirement	$ 371,144	$ 340,887
Ratio	6.00%	6.00%
Common equity tier 1 capital ratio
Amount	$ 503,561	$ 417,894
Ratio	8.14%	7.36%
Minimum Capital Requirement	$ 278,358	$ 255,665
Ratio	4.50%	4.50%
Tier 1 leverage ratio
Amount	$ 814,569	$ 608,644
Ratio	9.27%	8.07%
Minimum Capital Requirement	$ 351,322	$ 301,761
Ratio	4.00%	4.00%
Banc of California, NA
Total risk-based capital ratio
Amount	$ 865,712	$ 763,522
Ratio	14.03%	13.45%
Minimum Capital Requirement	$ 493,805	$ 454,192
Ratio	8.00%	8.00%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 617,256	$ 567,739
Ratio	10.00%	10.00%
Tier 1 risk-based capital ratio
Amount	$ 828,539	$ 725,922
Ratio	13.42%	12.79%
Minimum Capital Requirement	$ 370,354	$ 340,644
Ratio	6.00%	6.00%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 493,805	$ 454,192
Ratio	8.00%	8.00%
Common equity tier 1 capital ratio
Amount	$ 828,539	$ 725,922
Ratio	13.42%	12.79%
Minimum Capital Requirement	$ 277,765	$ 255,483
Ratio	4.50%	4.50%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 401,217	$ 369,031
Ratio	6.50%	6.50%
Tier 1 leverage ratio
Amount	$ 828,539	$ 725,922
Ratio	9.44%	9.64%
Minimum Capital Requirement	$ 351,104	$ 301,232
Ratio	4.00%	4.00%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 438,880	$ 376,540
Ratio	5.00%	5.00%

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Tier One Risk Based Common Capital

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Tier One Risk Based Common Capital Required for Capital Adequacy

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Tier One Risk Based Common Capital Required for Capital Adequacy to Risk Weighted Assets

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Tier One Risk Based Common Capital Required to be Well Capitalized

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Tier One Risk Based Common Capital Required to be Well Capitalized to Risk Weighted Assets

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Tier One Risk Based Common Capital to Risk Weighted Assets

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The amount of total capital as defined in the regulations.

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The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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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.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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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.

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Total Capital divided by risk weighted assets as defined in the regulations.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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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.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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