Quarterly report [Sections 13 or 15(d)]

Liquidity - Additional Information (Detail)

v3.25.1
Liquidity - Additional Information (Detail) - USD ($)
Mar. 31, 2025
Dec. 31, 2024
Line of Credit Facility [Line Items]    
Amount available from borrowing source $ 27,000,000 $ 27,600,000
Borrowings 0 0
Line of credit 140,000,000.0 140,000,000.0
State of California time deposits 2,398,077,000 2,325,283,000
Hanmi Bank    
Line of Credit Facility [Line Items]    
Cash on deposit with bank subsidiary 6,600,000 11,400,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances 117,500,000 262,500,000
Broker deposits $ 76,000,000 60,700,000
Percentage of borrowings from FHLB (up to) 30.00%  
Total borrowing capacity based on pledged collateral $ 1,700,000,000 1,690,000,000
Borrowing capacity available based on pledged collateral 1,430,000,000 1,300,000,000
Amount available from borrowing source 27,000,000.0 27,600,000
Carrying value for loans pledged by Bank 28,900,000 29,400,000
Borrowings 0 0
Maximum borrowing capacity of line of credit 100,000,000  
State of California time deposits 150,000,000 120,000,000
U.S. Treasury securities | Hanmi Bank    
Line of Credit Facility [Line Items]    
Debt securities fair value $ 42,900,000 $ 38,800,000