REGULATORY CAPITAL MATTERS (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Banc of California, Inc.
Total risk-based capital ratio
Amount	$ 908,490	$ 635,291
Ratio	13.45%	11.18%
Minimum Capital Requirement	$ 540,392	$ 454,515
Ratio	8.00%	8.00%
Tier 1 risk-based capital ratio
Amount	$ 887,664	$ 608,644
Ratio	13.14%	10.71%
Minimum Capital Requirement	$ 405,294	$ 340,887
Ratio	6.00%	6.00%
Common equity tier 1 capital ratio
Amount	$ 618,593	$ 417,894
Ratio	9.16%	7.36%
Minimum Capital Requirement	$ 303,970	$ 255,665
Ratio	4.50%	4.50%
Tier 1 leverage ratio
Amount	$ 887,664	$ 608,644
Ratio	8.87%	8.07%
Minimum Capital Requirement	$ 400,468	$ 301,761
Ratio	4.00%	4.00%
Banc of California, NA
Total risk-based capital ratio
Amount	$ 1,009,823	$ 763,522
Ratio	14.96%	13.45%
Minimum Capital Requirement	$ 540,087	$ 454,192
Ratio	8.00%	8.00%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 675,109	$ 567,739
Ratio	10.00%	10.00%
Tier 1 risk-based capital ratio
Amount	$ 970,489	$ 725,922
Ratio	14.38%	12.79%
Minimum Capital Requirement	$ 405,065	$ 340,644
Ratio	6.00%	6.00%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 540,087	$ 454,192
Ratio	8.00%	8.00%
Common equity tier 1 capital ratio
Amount	$ 970,489	$ 725,922
Ratio	14.38%	12.79%
Minimum Capital Requirement	$ 303,799	$ 255,483
Ratio	4.50%	4.50%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 438,821	$ 369,031
Ratio	6.50%	6.50%
Tier 1 leverage ratio
Amount	$ 970,489	$ 725,922
Ratio	9.70%	9.64%
Minimum Capital Requirement	$ 400,047	$ 301,232
Ratio	4.00%	4.00%
Minimum Required to Be Well Capitalized Under Prompt Corrective Action Provisions	$ 500,059	$ 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 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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