Retirement Plans (Components Of Net Periodic Benefit Costs (Income)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Retirement Plans [Abstract]
Service cost	$ 651	$ 570	$ 458
Interest cost	925	962	1,074
Expected return on plan assets	(1,772)	(1,829)	(1,216)
Recognized net actuarial loss	611	140	436
Amortization of transition liability	10	12	12
Amortization of prior service cost	40	40	39
Net Periodic Benefit Cost (Income)	465	(105)	803
Net loss (gain)	1,393	4,130	(2,273)
Amortization of net loss	(611)	(140)	(436)
Amortization of transition liability	(10)	(12)	(12)
Amortization of prior service cost	(40)	(40)	(39)
Total recognized in other comprehensive loss (income)	732	3,938	(2,760)
Total recognized in net periodic benefit cost (income) and other comprehensive loss (income)	$ 1,197	$ 3,833	$ (1,957)

Total Net Periodic Benefit Cost Recognized Including Amount In Other Comprehensive Income Loss Pension

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- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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The amount of the transition obligation or asset recognized in net periodic benefit cost.

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- Definition

Before tax amount, net of reclassification adjustments, of the (increase) decrease in the value of the projected benefit obligation and the increase (decrease) in the value of the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost.

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- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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- Definition

Amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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Before tax amount, net of reclassifications, of pension and other postretirement benefit plans (gain) loss included in accumulated other comprehensive income.

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