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
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 359,288		$ 330,871
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	32,429
Loan and lease loss provision (income)	(80)	$ (1,525)
Balance at end of period	33,152
Non-PCI Loans and Leases [Member]
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	31,458	37,494
Loan and lease loss provision (income)	0	(1,729)
Balance at end of period	32,261	35,381
Allowance for off-balance sheet items [Member] \| Non-PCI Loans and Leases [Member]
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	1,184	986
Loan and lease loss provision (income)	0	234
Balance at end of period	1,184	$ 1,220
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	330,906		310,987
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	20,555		15,669
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 7,827		$ 4,215