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)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2014
USD ($)
Subsidiary
Installment
Jun. 30, 2015
USD ($)
$ / shares
Jun. 30, 2014
USD ($)
$ / shares
Jun. 30, 2015
USD ($)
$ / shares
Jun. 30, 2014
USD ($)
$ / shares
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Net loss from discontinued operations   $ 0 $ 467 $ 0 $ 444
Loss from discontinued operation per diluted share (in usd per share) | $ / shares   $ (0.00) $ 0.01 $ (0.00) $ 0.01
Noninterest income   $ 11,133 $ 5,488 $ 21,983 $ 11,702
Noninterest expense   $ 27,118 18,139 $ 58,822 35,937
Discontinued Operations, Disposed of by Sale [Member] | Chun Ha and All World To Chunha Holdings Corporation [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Number of subsidiaries sold | Subsidiary 2        
Total assets $ 5,636   5,636   5,636
Net assets of discontinued operations 3,343   3,343   3,343
Total sale price 3,500   3,500   3,500
Sale consideration received 2,000        
Consideration due $ 1,500   1,500   1,500
Number of installments payable | Installment 3        
Gain on sale $ 51        
Capital gain tax 470        
Operating loss 14   52   14
Income tax expense $ 11        
Net loss from discontinued operations     $ 467   444
Loss from discontinued operation per diluted share (in usd per share) | $ / shares     $ 0.01    
Noninterest income     $ 1,300   2,700
Noninterest expense     $ 1,400   $ 2,700