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Pension Benefits (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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| Components of Net Periodic Benefit Costs for Both Pension Plans | ||||
| Defined Benefit Plan, Service Cost | $ 1,232,000 | $ 950,000 | $ 3,697,000 | $ 2,850,000 |
| Defined Benefit Plan, Interest Cost | 345,000 | 296,000 | 1,034,000 | 888,000 |
| Defined Benefit Plan, Expected Return on Plan Assets | (286,000) | (220,000) | (858,000) | (660,000) |
| Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 4,000 | 0 | 13,000 | 0 |
| Defined Benefit Plan, Amortization of Gains (Losses) | 197,000 | 102,000 | 591,000 | 304,000 |
| Defined Benefit Plan, Net Periodic Benefit Cost | 1,492,000 | 1,128,000 | 4,477,000 | 3,382,000 |
| Percentage in excess of the greater of the benefit obligation or the market-related value of assets, gain and losses amortized (as a percent) | 10.00% | |||
| Required contribution to Qualified Pension Plan for the current fiscal year | $ 5,400,000 | $ 5,400,000 | ||
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- Definition
The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the next twelve months after the current reporting period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions. No definition available.
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- Definition
Represents the percentage in excess of the greater of the benefit obligation or the market-related value of assets upon which the gains and losses are amortized over the average remaining service period of active participants. No definition available.
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- Definition
The amount of gains or losses recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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