Quarterly report pursuant to Section 13 or 15(d)

Liquidity - Additional Information (Detail)

v3.20.2
Liquidity - Additional Information (Detail) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Line of Credit Facility [Line Items]    
Outstanding borrowings   $ 0
Paycheck Protection Program    
Line of Credit Facility [Line Items]    
Advances from Federal Reserve Bank $ 101,800,000  
Advances from Federal Reserve Bank, percentage 0.35%  
Hanmi Bank    
Line of Credit Facility [Line Items]    
Cash on deposit with bank subsidiary $ 20,300,000  
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances 150,000,000.0 90,000,000.0
Broker deposits $ 235,200,000 264,200,000
Outstanding borrowings   0
Percentage of borrowings from FHLB (up to) 30.00%  
Borrowing capacity available based on pledged collateral $ 1,500,000,000 $ 878,400,000
Hanmi Bank | Paycheck Protection Program    
Line of Credit Facility [Line Items]    
Advances from Federal Reserve Bank $ 101,800,000  
Advances from Federal Reserve Bank, percentage 0.35%