Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.3.1.900
Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2014
Subsidiary
Dec. 31, 2015
USD ($)
Branches
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2013
Mar. 31, 2010
Dec. 31, 2015
USD ($)
Branches
loan_pool
Dec. 31, 2014
USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Percent of net loan recoveries to average loans   0.06%         0.06%  
Percent of nonperforming, non-PCI loans to all loans   0.60%         0.60%  
Percent of classified loans to all loans   1.24%         1.24%  
Allowance for loan losses of loans receivable | $   $ 42,935         $ 42,935 $ 52,666
Percent of allowance for loan losses to all loans   1.35%         1.35%  
Period of utilization rate and historical loss rates used for breaking down commitments by loan type   60 months   48 months 36 months 24 months    
General loan pools [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Number of loan pools             14  
Homogeneous loan pools [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Number of loan pools             3  
Oldest four quarters [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Risk factor calculations       46.00% 17.00% 40.00%    
Next four quarters [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Risk factor calculations       31.00% 33.00%      
Third four quarters [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Risk factor calculations       15.00%        
Most recent four quarters [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Risk factor calculations       8.00% 50.00% 60.00%    
Nonperforming Financing Receivable [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Delinquency period of loans with respect to interest or principal for discontinuance of accrual of interest income (less than)             90 days  
Cash and Cash Equivalents [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Delinquency period of loans with respect to interest or principal for discontinuance of accrual of interest income (less than)             90 days  
CANADA | Full Service [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Number of branches | Branches   42         42  
Chun Ha and All World To Chunha Holdings Corporation [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Number of subsidiaries sold | Subsidiary 2              
Hanmi Bank [Member]                
Financing Receivable, Recorded Investment, Past Due [Line Items]                
Number of shares exchanged for each of the Bank's share     1