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Employee Benefit Plans (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 30, 2008
Employee Benefit Plans (Textual) [Abstract] |  |  |  |  |
Vesting period | 6 years |  |  |  |
Restricted stock awards, shares issued | 11,000 | 11,000 | 10,150 |  |
Employee Benefit Plans (Additional Textual) [Abstract] |  |  |  |  |
Minimum percentage of eligible compensation on a pre-tax basis for eligible employees to save | 1.00% |  |  |  |
Percentage of total eligible compensation, contribution by Bank, maximum limit | 4.00% |  |  |  |
Employee contribution matching percentage | 50.00% |  |  |  |
Vesting percentage in participant's deferral contributions and employer matching contributions | 100.00% |  |  |  |
Employer matching contribution and the discretionary contribution | $ 744 | $ 680 | $ 551 |  |
One employee received shares from awards granted due to retirement |  | 210 | 210 | 210 |
Three employees received shares from awards granted due to retirement |  |  | 557 | 557 | 557
Restricted Stock [Member] |  |  |  |  |
Employee Benefit Plans (Textual) [Abstract] |  |  |  |  |
Vesting period | 3 years |  |  |  |
Restricted stock awards, shares issued | 11,000 | 11,000 | 10,150 |  |
Stock issued to number of employees | 54 | 56 | 53 |  |
Shares vest under the plan | 100.00% | 100.00% | 100.00% |  |
Shares forfeited due to employee termination | 1,135 | 778 | 1,575 |  |
Number of shares vested | 8,910 | 9,432 | 7,425 |  |
Number of employees, received the stock | 41 | 44 | 40 |  |
Compensation expense | 219 | 202 | 191 |  |
Unrecognized compensation expense related to the nonvested portion of restricted stock awards under the plan | $ 334 |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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