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Employee Benefits (Details 1) (Fair Value Measurements Level 3 Inputs [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value Measurements Level 3 Inputs [Member]
Changes in Level 3 securities
Balance at beginning of year	$ 1,522	$ 1,431
Purchases	152
Actual return - assets still being held	17	91
Balance at end of year	$ 1,691	$ 1,522

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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