Quarterly report pursuant to Section 13 or 15(d)

Liquidity - Additional Information (Detail)

v3.22.2.2
Liquidity - Additional Information (Detail) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]    
Total borrowing capacity based on pledged collateral $ 1,860,000,000 $ 1,800,000,000
Amount available from borrowing source 23,000,000.0 32,800,000
Borrowings 0  
Line of credit 115,000,000.0  
Hanmi Bank    
Line of Credit Facility [Line Items]    
Cash on deposit with bank subsidiary 14,900,000 94,900,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances 100,000,000.0 137,500,000
Broker deposits $ 93,300,000 141,800,000
Percentage of borrowings from FHLB (up to) 30.00%  
Total borrowing capacity based on pledged collateral $ 1,610,000,000 1,840,000,000
Borrowing capacity available based on pledged collateral 1,390,000,000 $ 1,610,000,000
Amount available from borrowing source 23,000,000.0  
Carrying value for loans pledged by Bank 28,600,000  
Borrowings 0  
Maximum borrowing capacity of line of credit 100,000,000.0  
U.S. Treasury securities | Hanmi Bank    
Line of Credit Facility [Line Items]    
Debt securities fair value $ 11,800,000