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Pension Plans (Details 6) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | $ 18,406 | $ 15,077 | $ 14,192
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 15,734 | 12,218 |
Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 2,672 | 2,859 |
Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Cash [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 464 | 304 |
Cash [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 464 | 304 |
Cash [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Cash [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Equity Securities [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 6,121 | 5,445 |
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 6,121 | 5,445 |
Equity Securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
U.S. Treasury Bonds [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 4,205 | 1,880 |
U.S. Treasury Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 4,205 | 1,880 |
U.S. Treasury Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
U.S. Treasury Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Agency Bonds [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 905 |
Agency Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 905 |
Agency Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 0 |
Agency Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 0 |
Etf Equity [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 458 |
Etf Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 458 |
Etf Equity [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 0 |
Etf Equity [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets |  | 0 |
Mutual Funds-Equity [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 4,944 | 3,226 |
Mutual Funds-Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 4,944 | 3,226 |
Mutual Funds-Equity [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Mutual Funds-Equity [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Corporate Bonds [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 2,640 | 2,827 |
Corporate Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Corporate Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 2,640 | 2,827 |
Corporate Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Mortgage-Backed Securities [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 32 | 32 |
Mortgage-Backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 0 | 0 |
Mortgage-Backed Securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | 32 | 32 |
Mortgage-Backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of the Company's pension plan assets |  |  |
Fair market value of assets | $ 0 | $ 0 |

X
- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 49 -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 Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph d(iv)(b)(i) -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 4: 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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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