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

Quarterly report pursuant to Section 13 or 15(d)

Borrowings and Subordinated Debentures - Additional Information (Detail)

Borrowings and Subordinated Debentures - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 20, 2021	Mar. 21, 2017	Dec. 31, 2005	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2014
Debt Instrument [Line Items]
Overnight advances from federal home loan banks				$ 50,000,000		$ 50,000,000		$ 250,000,000
Overnight advances (percent)				5.77%		5.77%		4.65%
Advances from the FHLB				$ 112,500,000		$ 112,500,000		$ 100,000,000
Weighted average interest rate of outstanding advances (percent)				2.77%		2.77%		0.87%
Interest expense on borrowings				$ 753,000	$ 349,000	$ 4,755,000	$ 1,056,000
Pledged loans receivable, carrying value				2,410,000,000		2,410,000,000		$ 1,990,000,000
Remaining available borrowing capacity				1,320,000,000		1,320,000,000		1,070,000,000.00
Loans pledged with FRB				24,700,000		24,700,000		23,400,000
Borrowing capacity through Fed Discount Window				23,900,000		23,900,000		22,000,000
Subordinated debentures issued				136,800,000		136,800,000		136,800,000
Debt instrument, maturity date	Sep. 01, 2031	Mar. 30, 2027
2031 Notes
Debt Instrument [Line Items]
Subordinated debentures issued	$ 110,000,000
Fixed interest rate	3.75%
Amortization of debt issuance costs	$ 2,100,000
Debt issuance costs, net				$ 108,300,000		$ 108,300,000		108,200,000
2027 Notes
Debt Instrument [Line Items]
Subordinated debentures issued		$ 100,000,000
Fixed interest rate		5.45%
Percentage of redemption price of outstanding principal amount.				100.00%		100.00%
Unamortized debt issuance cost				$ 1,100,000		$ 1,100,000
Subordinated debentures \| Central Bancorp, Inc
Debt Instrument [Line Items]
Subordinated debentures issued			$ 26,000,000
Debt instrument, maturity date						Mar. 15, 2036
Fixed interest rate			6.26%	7.07%		7.07%
Debt outstanding, net of issuance cost				$ 21,600,000		$ 21,600,000		21,200,000
Unpaid principal balance									$ 26,800,000
Estimated fair value									18,500,000
Debt instrument discount				5,200,000		$ 5,200,000		$ 5,600,000	$ 8,300,000
Frequency of interest payment						quarterly
Term for the initial fixed interest rate						5 years
Optional interest payment deferral period (not to exceed)						5 years
Variable interest rate basis						three-month LIBOR plus 140 basis points
Amortization of subordinated debentures				$ 106,000	$ 104,000	$ 314,000,000	$ 308,000,000
Benchmark Rate \| 2031 Notes
Debt Instrument [Line Items]
Basis spread	3.10%
3-month London Interbank Offered Rate (LIBOR) \| 2027 Notes
Debt Instrument [Line Items]
Basis spread		3.315%
3-month London Interbank Offered Rate (LIBOR) \| Subordinated debentures \| Central Bancorp, Inc
Debt Instrument [Line Items]
Basis spread			1.40%
3-Month Secured Overnight Financing Rate (SOFR ) \| Subordinated debentures \| Central Bancorp, Inc
Debt Instrument [Line Items]
Basis spread						1.66%
3-Month Secured Overnight Financing Rate (SOFR ) \| Credit Spread \| Subordinated debentures \| Central Bancorp, Inc
Debt Instrument [Line Items]
Basis spread						1.40%
3-Month Secured Overnight Financing Rate (SOFR ) \| Adjustment to Convert 3-month LIBOR to 3-month SOFR \| Subordinated debentures \| Central Bancorp, Inc
Debt Instrument [Line Items]
Basis spread						0.26%