REGULATORY CAPITAL MATTERS - Actual and Required Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Banc of California, NA
Total risk-based capital
Total risk-based capital ratio, actual amount	$ 1,007,762	$ 1,120,122
Total risk-based capital ratio, actual ratio (percent)	17.46%	15.71%
Total risk-based capital ratio, minimum capital requirements amount	$ 461,843	$ 570,382
Total risk-based capital ratio, minimum capital requirements ratio (percent)	8.00%	8.00%
Total risk-based capital ratio, minimum required to be well capitalized under prompt corrective action provisions amount	$ 577,304	$ 712,977
Total risk-based capital ratio, minimum required to be well capitalized under prompt corrective action provisions ratio (percent)	10.00%	10.00%
Tier 1 risk-based capital
Tier 1 risk-based capital ratio, actual amount	$ 946,049	$ 1,053,308
Tier 1 risk-based capital ratio, actual ratio (percent)	16.39%	14.77%
Tier 1 risk-based capital ratio, minimum capital requirements amount	$ 346,382	$ 427,786
Tier 1 risk-based capital ratio, minimum capital requirements ratio (percent)	6.00%	6.00%
Tier 1 risk-based capital ratio, minimum required to be well capitalized under prompt corrective action provisions amount	$ 461,843	$ 570,382
Tier 1 risk-based capital ratio, minimum required to be well capitalized under prompt corrective action provisions ratio (percent)	8.00%	8.00%
Common equity tier 1 capital
Common equity tier 1 capital ratio, actual amount	$ 946,049	$ 1,053,308
Common equity tier 1 capital ratio, actual ratio (percent)	16.39%	14.77%
Common equity tier 1 capital ratio, minimum capital requirements amount	$ 259,787	$ 320,840
Common equity tier 1 capital ratio, minimum capital requirements ratio (percent)	4.50%	4.50%
Common equity tier 1 capital ratio, minimum required to be well capitalized under prompt corrective action provisions amount	$ 375,247	$ 463,435
Common equity tier 1 capital ratio, minimum required to be well capitalized under prompt corrective action provisions ratio (percent)	6.50%	6.50%
Tier 1 leverage
Tier 1 leverage ratio, actual amount	$ 946,049	$ 1,053,308
Tier 1 leverage ratio, actual ratio (percent)	12.02%	10.36%
Tier 1 leverage ratio, minimum capital requirements amount	$ 314,707	$ 406,694
Tier 1 leverage ratio, minimum capital requirements ratio (percent)	4.00%	4.00%
Tier 1 leverage ratio, minimum required to be well capitalized under prompt corrective action provisions amount	$ 393,383	$ 508,368
Tier 1 leverage ratio, minimum required to be well capitalized under prompt corrective action provisions ratio (percent)	5.00%	5.00%
Banc of California, Inc.
Total risk-based capital
Total risk-based capital ratio, actual amount	$ 921,892	$ 977,342
Total risk-based capital ratio, actual ratio (percent)	15.90%	13.71%
Total risk-based capital ratio, minimum capital requirements amount	$ 463,950	$ 570,368
Total risk-based capital ratio, minimum capital requirements ratio (percent)	8.00%	8.00%
Tier 1 risk-based capital
Tier 1 risk-based capital ratio, actual amount	$ 860,179	$ 910,528
Tier 1 risk-based capital ratio, actual ratio (percent)	14.83%	12.77%
Tier 1 risk-based capital ratio, minimum capital requirements amount	$ 347,963	$ 427,776
Tier 1 risk-based capital ratio, minimum capital requirements ratio (percent)	6.00%	6.00%
Common equity tier 1 capital
Common equity tier 1 capital ratio, actual amount	$ 670,355	$ 679,400
Common equity tier 1 capital ratio, actual ratio (percent)	11.56%	9.53%
Common equity tier 1 capital ratio, minimum capital requirements amount	$ 260,972	$ 320,832
Common equity tier 1 capital ratio, minimum capital requirements ratio (percent)	4.50%	4.50%
Tier 1 leverage
Tier 1 leverage ratio, actual amount	$ 860,179	$ 910,528
Tier 1 leverage ratio, actual ratio (percent)	10.89%	8.95%
Tier 1 leverage ratio, minimum capital requirements amount	$ 315,825	$ 407,145
Tier 1 leverage ratio, minimum capital requirements ratio (percent)	4.00%	4.00%

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

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The amount of total capital as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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