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Benefit Plans (Details 7) (Pension Plans, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule of fair value hierarchy, the Company's pension plan assets
Total	$ 4,046	$ 3,454	$ 4,284	$ 3,921
Fixed income funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total	1,023	1,409
Equity funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total	3,023	2,045
Level 1 [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total	4,046	3,454
Level 1 [Member] \| Fixed income funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total	1,023	1,409
Level 1 [Member] \| Equity funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total	3,023	2,045
Level 2 [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total
Level 2 [Member] \| Fixed income funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total
Level 2 [Member] \| Equity funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total
Level 3 [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total
Level 3 [Member] \| Fixed income funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total
Level 3 [Member] \| Equity funds [Member]
Schedule of fair value hierarchy, the Company's pension plan assets
Total

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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