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, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 308,801hafc_UndisbursedLoanCommitments	$ 325,612hafc_UndisbursedLoanCommitments
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	297,912	309,584
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	6,299	8,982
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 4,590	$ 7,046