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

Off-Balance Sheet Commitments - Distribution of Undisbursed Loan Commitments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 353,722		$ 353,722		$ 371,448
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period			31,974
Provision (income)	16,699	$ 100	17,816	$ 749
Balance at end of period	49,386		49,386
Non-PCI Loans and Leases
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	32,896	31,777	31,974	31,043
Provision (income)	16,699	100	17,816	749
Balance at end of period	49,386	31,818	49,386	31,818
Allowance for off-balance sheet items \| Non-PCI Loans and Leases
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	1,100	1,323	1,439	1,296
Provision (income)	233	34	(106)	61
Balance at end of period	1,333	$ 1,357	1,333	$ 1,357
Commitments to extend credit
Loss Contingencies [Line Items]
Total undisbursed loan commitments	311,129		311,129		325,100
Standby letters of credit
Loss Contingencies [Line Items]
Total undisbursed loan commitments	32,663		32,663		32,500
Commercial letters of credit
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 9,930		$ 9,930		$ 13,848