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Employee Benefit Plans (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan, Fair Value of Plan Assets	$ 5,656	$ 4,892	$ 4,497
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	3,030	2,421
Fixed Income Funds [Member]
Defined Benefit Plan, Fair Value of Plan Assets	2,626	2,471
Fixed Income Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Fixed Income Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	2,626	2,471
Fixed Income Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Private Equity Funds, Domestic [Member]
Defined Benefit Plan, Fair Value of Plan Assets	2,203	1,758
Private Equity Funds, Domestic [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	2,203	1,758
Private Equity Funds, Domestic [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Private Equity Funds, Domestic [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Private Equity Funds, Foreign [Member]
Defined Benefit Plan, Fair Value of Plan Assets	296	209
Private Equity Funds, Foreign [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	296	209
Private Equity Funds, Foreign [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Private Equity Funds, Foreign [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Cash and Cash Equivalents [Member]
Defined Benefit Plan, Fair Value of Plan Assets	531	454
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	531	454
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan, Fair Value of Plan 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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