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Liquidity - Additional Information (Detail) (USD $) | Sep. 30, 2013 | Dec. 31, 2012 | Apr. 30, 2013 Trust Preferred Securities [Member] | Mar. 31, 2013 Trust Preferred Securities [Member] | Sep. 30, 2013 Maximum [Member] | Sep. 30, 2013 Hanmi Bank [Member] | Sep. 30, 2013 Fed Discount Window [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Redemption of preferred securities |  |  | $ 51,500,000 | $ 30,900,000 |  |  |
Amount of advances from the Federal Home Loan Bank (FHLB) | 2,600,000 | 2,900,000 |  |  |  |  |
Broker deposits |  |  |  |  |  | 0 |
Percent of borrowing from FHLB |  |  |  |  | 30.00% |  |
Total borrowing capacity based on pledged collateral | 366,200,000 | 275,100,000 |  |  |  |  |
Borrowing capacity available based on pledged collateral | 363,500,000 | 272,200,000 |  |  |  |  |
Bank's FHLB borrowing | 2,645,000 | 2,935,000 |  |  |  |  |
Borrowing percentage of total assets | 0.09% | 0.09% |  |  |  |  |
Amount available from borrowing source |  |  |  |  |  |  | 91,800,000
Carrying value for loans pledged by bank | 126,800,000 |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |  |
Maximum borrowing capacity of line of credit |  | $ 100,000,000 |  |  |  |  |

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- Definition Borrowing capacity available based on pledged collateral. + References No definition available. + Details
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- Definition Borrowing capacity based on pledged collateral. + References No definition available. + Details
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- Definition Broker deposits. + References No definition available. + Details
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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Amount of advances from the Federal Home Loan Bank (FHLB). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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