Quarterly report pursuant to Section 13 or 15(d)

Sale of Insurance Subsidiaries and Discontinued Operations - Additional Information (Detail)

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Sale of Insurance Subsidiaries and Discontinued Operations - Additional Information (Detail) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Mar. 31, 2014
Discontinued operations [Member]
Jun. 30, 2014
Discontinued operations [Member]
Jun. 30, 2014
Chun Ha and All World To Chunha Holdings Corporation [Member]
Installment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]              
Total sale price             $ 3,500,000
Sale consideration received             2,000,000
Reduction by cash and cash equivalents included in net assets             1,600,000
Net proceeds from sales of subsidiaries     398,000       398,000
Consideration due             1,500,000
Discontinued operations held for sale, Description             The total sales price was $3.5 million, of which $2.0 million was paid upon signing. The $2.0 million was reduced by $1.6 million cash and cash equivalents included in net assets of Chun-Ha and All World, resulting in $398,000 net cash proceeds. The remaining $1.5 million will be payable in three equal installments on each anniversary of the closing date through June 30, 2017.
Number of installments payable             3
Net loss from discontinued operations 467,000 (160,000) 444,000 (89,000)      
Income from discontinued operation per diluted share $ (0.01) $ 0.01 $ (0.01)        
Gain on disposal 51,000   51,000        
Income tax benefit from operating loss     4,000        
Capital gain tax     470,000        
Operating loss (52,000) 244,000 (14,000) 128,000      
Non-interest income 5,073,000 6,738,000 10,901,000 13,887,000 1,300,000 2,700,000  
Non-interest expense $ 18,557,000 $ 18,607,000 $ 36,830,000 $ 36,263,000 $ 1,400,000 $ 2,700,000