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

Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Valuation allowance	$ 5.4	$ 5.4	$ 82.3
Reversal of valuation allowance on deferred tax assets	4.9	57.9
Operating Loss Carryforwards	5.3	5.3
Restricted Net Operating Loss Carryforwards	$ 10.4	$ 10.4

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.