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

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.

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