Employee Benefit and Retirement Plans (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Pension Plans [Member]
Accumulated other comprehensive income that are expected to be recognized as a component of net benefit (income) cost
Initial net asset (obligation)	$ 0
Prior service cost	0
Net loss	0
Total estimated amortization from Accumulated Other Comprehensive Income for fiscal 2012	0
Postretirement Plans [Member]
Accumulated other comprehensive income that are expected to be recognized as a component of net benefit (income) cost
Initial net asset (obligation)	0
Prior service cost	(166)
Net loss	68
Total estimated amortization from Accumulated Other Comprehensive Income for fiscal 2012	$ (98)

The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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- Definition

The amounts in accumulated other comprehensive income related to transition assets (obligations), origination from the adoption of FAS 87 and 106, expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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- Definition

The aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

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