Annual report pursuant to Section 13 and 15(d)

Condensed Financial Information of Parent Company - Statement of Income of Parent Company (Detail)

v3.8.0.1
Condensed Financial Information of Parent Company - Statement of Income of Parent Company (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]                      
Interest expense $ (9,440) $ (8,936) $ (8,148) $ (5,995) $ (5,247) $ (4,743) $ (4,179) $ (4,105) $ (32,519) $ (18,274) $ (16,109)
Other operating expenses                 (10,868) (10,993) (10,806)
Income tax benefit (13,049) (9,890) (9,057) (8,628) (9,611) (8,248) (8,857) (6,183) (40,624) (32,899) (38,182)
Equity in undistributed earnings of subsidiary                 339 457  
Net income $ 11,497 $ 14,923 $ 14,457 $ 13,783 $ 14,416 $ 13,121 $ 14,148 $ 14,804 54,660 56,489 53,823
Hanmi Financial [Member]                      
Condensed Income Statements, Captions [Line Items]                      
Dividends from bank subsidiary                 22,619 8,978 15,129
Interest expense                 (5,353) (825) (623)
Other operating expenses                 (5,291) (5,188) (4,639)
Income before taxes and undistributed income                 11,975 2,965 9,867
Income tax benefit                 7,513 2,382 2,140
Income before undistributed income of subsidiary                 19,488 5,347 12,007
Equity in undistributed earnings of subsidiary                 35,172 51,142 41,816
Net income                 $ 54,660 $ 56,489 $ 53,823