Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Mar. 31, 2010
Dec. 31, 2013
Accounting Policies [Line Items]    
Reverse stock split   The number of shares of our common stock and the computation of basic and diluted earnings (loss) per share were adjusted retroactively for all periods presented to reflect the 1-for-8 reverse stock split, which became effective on December 19, 2011.
Period of utilization rate and historical loss rates used for breaking down commitments by loan type   36 months
Loans to be impaired if the Bank's Tier 1 Capital exceeds, percentage   5.00%
Hanmi Bank [Member]
    
Accounting Policies [Line Items]    
Number of shares exchanged for each of the Bank's share   1
General loan pools [Member]
    
Accounting Policies [Line Items]    
Number of loan pools   11
Homogeneous loan pools [Member]
    
Accounting Policies [Line Items]    
Number of loan pools   3
Nonperforming Financing Receivable [Member]
    
Accounting Policies [Line Items]    
Delinquency period of loans with respect to interest or principal for discontinuance of accrual of interest income   90 days
Maximum [Member]
    
Accounting Policies [Line Items]    
Period of utilization rate and historical loss rates used for breaking down commitments by loan type 36 months  
Maximum [Member] | Cash and Cash Equivalents [Member]
    
Accounting Policies [Line Items]    
Delinquency period of loans with respect to interest or principal for discontinuance of accrual of interest income   90 days
Minimum [Member]
    
Accounting Policies [Line Items]    
Period of utilization rate and historical loss rates used for breaking down commitments by loan type 24 months  
CANADA | Full Service [Member]
    
Accounting Policies [Line Items]    
Number of branches   27
Washington [Member] | Loan Production [Member]
    
Accounting Policies [Line Items]    
Number of branches   2
TEXAS | Loan Production [Member]
    
Accounting Policies [Line Items]    
Number of branches   2
Most recent four quarters [Member]
    
Accounting Policies [Line Items]    
Risk factor calculations 60.00% 50.00%
Next four quarters [Member]
    
Accounting Policies [Line Items]    
Risk factor calculations   33.00%
Oldest four quarters [Member]
    
Accounting Policies [Line Items]    
Risk factor calculations 40.00% 17.00%