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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 Segment Office | Jun. 30, 2013 | Dec. 31, 2013
Accounting Policies [Line Items] |  |  |  |  |
Number of offices in which the company operates throughout the country |  |  | 22 |  |
Impairment charge related to investment |  |  | $ 0 |  |
Held to maturity or trading securities |  |  |  |  |
Debt securities other than temporarily impaired |  |  |  |  |
Maturity of interest bearing deposits |  |  | 90 days |  |
Contractual term of loans, reasonable period |  |  | 6 months |  |
Balance of loans serviced for others | 319,000,000 |  | 319,000,000 |  | 322,653,000
Foreclosed real estate totaled | 1,415,000 |  | 1,415,000 |  | 987,000
Advertising expense | 133,000 | 122,000 | 366,000 | 177,000 |
Percentage of deferred tax assets |  |  | 50.00% |  |
Accumulated other comprehensive income (loss), net of taxes | $ 1,285,000 |  | $ 1,285,000 |  | $ (4,813,000)
Number of operating significant segment |  |  | 1 |  |
Maximum [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Cash and cash equivalents, original maturities |  |  | 90 days |  |
Maximum [Member] | Building and Improvements [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Plant and equipment, useful life |  |  | 40 years |  |
Maximum [Member] | Furniture and Equipment [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Plant and equipment, useful life |  |  | 15 years |  |
Minimum [Member] | Building and Improvements [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Plant and equipment, useful life |  |  | 10 years |  |
Minimum [Member] | Furniture and Equipment [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Plant and equipment, useful life |  |  | 3 years |  |

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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