Share-Based Compensation - Share-Based Payment Award Activity (Parenthetical) (Detail) (USD $)	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic value represents the excess of the closing stock price related to options outstanding	$ 17.67	$ 16.00	$ 13.59

The excess of the closing stock price on the last day of the trading period over the exercise price.

No definition available.

Name:	hafc_ClosingPriceOfCommonStock
Namespace Prefix:	hafc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant