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Short Term Borrowings - Additional Information (Detail) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 Financial_Institution | Dec. 31, 2012 | Dec. 31, 2011
Short-term Debt [Line Items] |  |  |
Federal home loan bank shares owned | 14,529 |  |
Percentage of investment to be maintained on total assets | 0.20% |  |
Additional percentage of investment to be maintained on total advances | 4.50% |  |
Percentage of credit available on total assets | 20.00% |  |
Amount of credit available on total assets | $ 63,716,000 |  |
Long-term federal home loan bank advances | 20,000,000 |  |
Average short-term borrowings | 1,838,000 | 399,000 | 811,000
Number of financial institution lending credit facility | 2 |  |
Unsecured Line Of Credit |  |  |
Short-term Debt [Line Items] |  |  |
Line of credit, amount available for borrowing | 3,000,000 | 3,000,000 | 3,000,000
Financial Bank One | Federal Funds |  |  |
Short-term Debt [Line Items] |  |  |
Line of credit, amount available for borrowing | 8,000,000 |  |
Financial Bank Two | Federal Funds |  |  |
Short-term Debt [Line Items] |  |  |
Line of credit, amount available for borrowing | $ 5,000,000 |  |

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- Definition Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer. + 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 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64702-112823 + Details
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