Hanmi Financial Corporation Quarterly report pursuant to Section 13 or 15(d)

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

Securities - Summary of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 990,052	$ 978,796
Gross Unrealized Gain	300	63
Gross Unrealized Loss	(111,651)	(125,021)
Estimated Fair Value	878,701	853,838
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	56,174	49,690
Gross Unrealized Gain	79
Gross Unrealized Loss	(1,327)	(1,664)
Estimated Fair Value	54,926	48,026
Mortgage-backed securities - residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	532,117	540,590
Gross Unrealized Gain	152	63
Gross Unrealized Loss	(68,164)	(75,501)
Estimated Fair Value	464,105	465,152
Mortgage-backed securities - commercial
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	61,489	61,799
Gross Unrealized Loss	(10,623)	(10,507)
Estimated Fair Value	50,866	51,292
Collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	112,021	98,236
Gross Unrealized Gain	69
Gross Unrealized Loss	(11,544)	(12,751)
Estimated Fair Value	100,546	85,485
Debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	150,362	150,338
Gross Unrealized Loss	(9,994)	(11,839)
Estimated Fair Value	140,368	138,499
Total U.S. government agency and sponsored agency obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	855,989	850,963
Gross Unrealized Gain	221	63
Gross Unrealized Loss	(100,325)	(110,598)
Estimated Fair Value	755,885	740,428
Municipal bonds-tax exempt
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	77,889	78,143
Gross Unrealized Loss	(9,999)	(12,759)
Estimated Fair Value	$ 67,890	$ 65,384