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, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 347,429		$ 347,429		$ 330,871
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period			32,429
Loan and lease loss provision (income)	422	$ (1,515)	342	$ (3,040)
Balance at end of period	33,758		33,758
Non-PCI Loans and Leases [Member]
Allowance for Loan Off-Balance Sheet Items [Roll Forward]
Balance at beginning of period	32,261	35,381	31,458	37,494
Loan and lease loss provision (income)	593	(1,455)	593	(3,184)
Balance at end of period	33,038	34,259	33,038	34,259
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	1,220	1,184	986
Loan and lease loss provision (income)	(49)	255	(49)	489
Balance at end of period	1,135	$ 1,475	1,135	$ 1,475
Commitments to extend credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	313,290		313,290		310,987
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	19,249		19,249		15,669
Commercial letters of credit [Member]
Loss Contingencies [Line Items]
Total undisbursed loan commitments	$ 14,890		$ 14,890		$ 4,215