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Investment Securities - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Government and agencies debt securities |  |
Investment [Line Items] |  |
Percentage amount by which investment positions in continuous loss position had depreciated from amortized cost basis | 3.50% |
Municipal obligations |  |
Investment [Line Items] |  |
Gross gains on sales of available for sale securities | $ 22,000 |
Agency mortgage-backed securities |  |
Investment [Line Items] |  |
Gross gains on sales of available for sale securities | 7,000 | 35,000
Agency notes and bonds |  |
Investment [Line Items] |  |
Gross gains on sales of available for sale securities |  | 2,000
Collateralized Mortgage Obligations Issued By Private Enterprise |  |
Investment [Line Items] |  |
Gross losses on sales of available for sale securities |  | 18,000
Agency CMO |  |
Investment [Line Items] |  |
Gross losses on sales of available for sale securities |  | 8,000
Another Financial Institution |  |
Investment [Line Items] |  |
Cost method investments,shares acquired | 100,000 |
Cost method investments | $ 540,000 |
Cost method investments, ownership percentage | 7.00% |

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- Definition Cost Method Investment Ownership Shares Acquired + References No definition available. + Details
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- Details
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- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition This item represents the volatility of the security's fair value, represented as a percentage, which was considered as one of the potential factors in reaching a conclusion that the available-for-sale investments are not other-than-temporarily impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=29638308&loc=d3e40346-111594 + Details
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