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Employee Benefits (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Matched percentage by employer | 50.00% |  |
Maximum employee percentage of deferred salary matched by employer | 6.00% |  |
Employer contributions | $ 867 | $ 739 | $ 668
Non-elective safe-harbor contribution received each December 31st | 3.00% |  |
Maximum age benefit could be reduced or forfeited | 65 years |  |
Supplemental income benefit liability | 121 | 146 |
Supplemental income benefit expense | $ 16 | $ 13 | $ 13
Maximum [Member] |  |  |
Non-elective safe-harbor contribution received each December 31st | 10.00% |  |
Minimum [Member] |  |  |
Non-elective safe-harbor contribution received each December 31st | 1.00% |  |

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- Definition Maximum Age Benefits Can Be Reduced Or Forfeited Due To Employment Termination + References No definition available. + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan. + References No definition available. + Details
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