Quarterly report pursuant to Section 13 or 15(d)

Liquidity - Additional Information (Detail)

v3.20.2
Liquidity - Additional Information (Detail) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Line of Credit Facility [Line Items]    
Outstanding borrowings $ 0 $ 0
Hanmi Bank    
Line of Credit Facility [Line Items]    
Cash on deposit with bank subsidiary 16,100,000  
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances 150,000,000.0 90,000,000.0
Broker deposits 206,500,000 264,200,000
Outstanding borrowings $ 0 0
Percentage of borrowings from FHLB (up to) 30.00%  
Borrowing capacity available based on pledged collateral $ 1,430,000,000 878,400,000
Hanmi Bank | Paycheck Protection Program    
Line of Credit Facility [Line Items]    
Advances from Federal Reserve Bank $ 0 $ 0