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Cover
Jan. 25, 2024
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jan. 25, 2024
Entity File Number 001-35522
Entity Registrant Name BANC OF CALIFORNIA, INC.
Entity Central Index Key 0001169770
Entity Tax Identification Number 04-3639825
Entity Incorporation, State or Country Code MD
Entity Address, Address Line One 11611 San Vicente Boulevard
Entity Address, Address Line Two Suite 500 
Entity Address, City or Town Los Angeles
Entity Address, State or Province CA
Entity Address, Postal Zip Code 90049
City Area Code 855
Local Phone Number 361-2262
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol BANC
Security Exchange Name NYSE
Depositary Shares, each representing a 1/40th interest in a share of 7.75% fixed rate reset non-cumulative perpetual preferred stock, Series F [Member]  
Document Information [Line Items]  
Title of 12(b) Security Depositary Shares, each representing a 1/40th interest in a share of 7.75% fixed rate reset non-cumulative perpetual preferred stock, Series F
Trading Symbol BANC/PF
Security Exchange Name NYSE