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Fair Value Measurements - Carrying Values and Estimated Fair Values of Company's Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Financial Assets |  |
Securities | $ 103,301 | $ 89,456
Bank owned life insurance | 10,978 | 10,609
Carrying Amount [Member] |  |
Financial Assets |  |
Cash and short-term investments | 31,508 | 31,028
Securities | 103,301 | 89,456
Restricted stock | 1,804 | 1,974
Loans held for sale |  | 503
Loans, net | 346,449 | 370,519
Bank owned life insurance | 10,978 | 10,609
Accrued interest receivable | 1,302 | 1,459
Financial Liabilities |  |
Deposits | 450,711 | 466,917
Other borrowings | 6,052 | 6,076
Trust preferred capital notes | 9,279 | 9,279
Accrued interest payable | 177 | 286
Fair Value [Member] |  |
Financial Assets |  |
Cash and short-term investments | 31,508 | 31,028
Securities | 103,301 | 89,456
Restricted stock | 1,804 | 1,974
Loans held for sale |  | 503
Loans, net | 353,874 | 375,941
Bank owned life insurance | 10,978 | 10,609
Accrued interest receivable | 1,302 | 1,459
Financial Liabilities |  |
Deposits | 451,377 | 468,870
Other borrowings | 6,095 | 6,220
Trust preferred capital notes | 9,399 | 8,735
Accrued interest payable | 177 | 286
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member] |  |
Financial Assets |  |
Cash and short-term investments | 31,508 | 31,028
Securities | 5 | 3
Restricted stock |  |
Loans held for sale |  |
Loans, net |  |
Bank owned life insurance |  |
Accrued interest receivable |  |
Financial Liabilities |  |
Deposits |  |
Other borrowings |  |
Trust preferred capital notes |  |
Accrued interest payable |  |
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member] |  |
Financial Assets |  |
Cash and short-term investments |  |
Securities | 103,296 | 89,453
Restricted stock | 1,804 | 1,974
Loans held for sale |  | 503
Loans, net |  |
Bank owned life insurance | 10,978 | 10,609
Accrued interest receivable | 1,302 | 1,459
Financial Liabilities |  |
Deposits | 326,955 | 306,719
Other borrowings |  |
Trust preferred capital notes |  |
Accrued interest payable | 177 | 286
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member] |  |
Financial Assets |  |
Cash and short-term investments |  |
Securities |  |
Restricted stock |  |
Loans held for sale |  |
Loans, net | 353,874 | 375,941
Bank owned life insurance |  |
Accrued interest receivable |  |
Financial Liabilities |  |
Deposits | 124,422 | 162,151
Other borrowings | 6,095 | 6,220
Trust preferred capital notes | 9,399 | 8,735
Accrued interest payable |  |

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- Definition Fair value portion of amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13487-108611 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 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3 -Subparagraph a, b -Article 5 + Details
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