Subsequently Defaulted Loans Modified (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 11,471	$ 27,109
Extended Maturity
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	9,206	13,210
Payment Delay
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	2,197
Combination Term Extension and Interest Rate Reduction
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	68
Combination Term Extension and Payment Delay
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		13,899
Commercial Portfolio Segment [Member] \| Other commercial
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	142
Commercial Portfolio Segment [Member] \| Extended Maturity \| Other commercial
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	74
Commercial Portfolio Segment [Member] \| Extended Maturity and Interest Rate Reduction \| Other commercial
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	68
Other Residential Real Estate \| Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	2,197	3,539
Other Residential Real Estate \| Mortgages [Member] \| Extended Maturity
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	0	3,539
Other Residential Real Estate \| Mortgages [Member] \| Payment Delay
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	2,197
Commercial Real Estate Loan Receivable \| Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		23,570
Commercial Real Estate Loan Receivable \| Mortgages [Member] \| Combination Term Extension and Payment Delay
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		13,899
Multi-Family Real Estate Loans \| Mortgages [Member] \| Extended Maturity
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 9,132	$ 9,671

BANC OF CALIFORNIA, INC. 10-K