Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Sale of Insurance Subsidiaries and Discontinued Operations - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2014
USD ($)
Subsidiary
Installment
$ / shares
Dec. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
$ / shares
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Gain on disposal $ 51                      
Capital gain tax 470                      
Operating loss (14)                      
Net loss from discontinued operations (444)                 $ 0 $ 0 $ (444)
Income tax expense from operating loss $ 11                      
Net loss from discontinued operation per diluted share (in usd per share) | $ / shares $ (0.01)                     $ (0.01)
Noninterest income   $ 8,067 $ 8,674 $ 9,373 $ 6,961 $ 12,056 $ 13,561 $ 11,135 $ 10,850 33,075 47,602 $ 42,296
Noninterest expense   $ 25,955 $ 28,337 $ 27,863 $ 26,068 $ 28,186 $ 28,723 $ 27,028 $ 31,391 108,223 115,328 $ 98,671
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 $ 5,600                      
Net assets of discontinued operations 3,300                      
Total sale price 3,500                      
Sale consideration received                   $ 2,000    
Consideration due $ 1,500                      
Number of installments payable | Installment 3                      
Discontinued operations [Member]                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Noninterest income                     2,700  
Noninterest expense                     $ 2,700