Hanmi Financial Corporation Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Investment Securities - Summary of Investment Securities Available for Sale (Detail)

Investment Securities - Summary of Investment Securities Available for Sale (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 1,061,703	$ 549,113
Gross Unrealized Gain	3,980	782
Gross Unrealized Loss	4,966	18,969
Estimated Fair Value	1,060,717us-gaap_AvailableForSaleSecurities	530,926us-gaap_AvailableForSaleSecurities
Collateralized mortgage obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	188,704	130,636
Gross Unrealized Gain	417	274
Gross Unrealized Loss	1,074	3,217
Estimated Fair Value	188,047	127,693
Municipal bonds-tax exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,319	13,857
Gross Unrealized Gain	71	110
Gross Unrealized Loss	0	30
Estimated Fair Value	4,390	13,937
Municipal bonds-taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	16,615	33,361
Gross Unrealized Gain	398	73
Gross Unrealized Loss	91	1,080
Estimated Fair Value	16,922	32,354
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,018	21,013
Gross Unrealized Gain	2	8
Gross Unrealized Loss	72	186
Estimated Fair Value	16,948	20,835
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	571,678	222,768
Gross Unrealized Gain	2,811	317
Gross Unrealized Loss	1,203	6,026
Estimated Fair Value	573,286	217,059
U.S. government agency securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	129,857	90,852
Gross Unrealized Gain	172
Gross Unrealized Loss	1,822	7,316
Estimated Fair Value	128,207	83,536
SBA loan pool securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	109,983	13,598
Gross Unrealized Gain	52
Gross Unrealized Loss	588	969
Estimated Fair Value	109,447	12,629
U.S. treasury securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	163	19,998
Gross Unrealized Gain	0
Gross Unrealized Loss	0	1
Estimated Fair Value	163	19,997
Other securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,916	3,030
Gross Unrealized Gain	57
Gross Unrealized Loss	80	144
Estimated Fair Value	22,893	2,886
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	450
Gross Unrealized Gain	0
Gross Unrealized Loss	36
Estimated Fair Value	$ 414