The actual return on plan assets for the period.

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- Definition

Amount of the effect of the government subsidy for prescription drug benefits on the measurement of interest cost in net periodic postretirement benefit cost for the period.

+ References

No definition available.

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- Definition

Amount of the effect of the government subsidy for prescription drug benefits on the measurement of net loss amortization in net periodic postretirement benefit cost for the period.

+ References

No definition available.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(3)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

+ References

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

+ References

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- Definition

Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (l)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Health Care Cost Trend Rate

-URI http://asc.fasb.org/extlink&oid=6514820

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- Definition

The ultimate trend rate for health care costs.

+ References

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- Definition

Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

+ References

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- Definition

Amount of the effect of the government subsidy for prescription drug benefits on the measurement of net periodic postretirement benefit cost. That effect includes (1) any amortization of the actuarial experience gain, (2) the reduction in current period service cost due to the subsidy, and (3) the resulting reduction in interest cost on the accumulated postretirement benefit obligation as a result of the subsidy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 60

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964

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Pension Plan and Employee Benefits, Additional Disclosures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets (in hundredths)		5.70%	15.20%
Expected return on plan assets (in hundredths)	6.76%	6.78%	6.61%	7.80%
Projected benefit payments [Abstract]
2014		$ 16,251
2015		17,037
2016		17,918
2017		19,025
2018		20,087
Next five years		119,982
Other Benefits [Member]
Impact of future Medicare subsidies on the components of other benefit costs [Abstract]
(Increase) reduction in interest cost		0	(8)
Reduction in net loss amortization		0	199
Reduction in net other benefit cost		0	191
Assumed health care cost trend rates for next fiscal year(in hundredths)		7.00%	8.00%	9.00%
Ultimate health care trend rate (in hundredths)		5.00%
Year that rate reaches ultimate trend rate		2031
Effect of one-percentage point change in assumed health care cost trend rates [Abstract]
Effect of one-percentage point increase on total of service and interest cost components		31
Effect of one-percentage point decrease on total of service and interest cost components		(11)
Effect of one-percentage point increase on postretirement benefit obligation		291
Effect of one-percentage point decrease on postretirement benefit obligation		(324)
Projected benefit payments [Abstract]
2014		3,557
2015		3,645
2016		3,789
2017		3,888
2018		3,985
Next five years		19,813
SERP Benefits [Member]
Projected benefit payments [Abstract]
2014		2,743
2015		3,011
2016		3,230
2017		3,277
2018		3,460
Next five years		$ 20,169