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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph g

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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.

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

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

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

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

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

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930

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-Name Statement of Financial Accounting Standard (FAS)

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Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

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Pension, Savings and Postretirement Benefits (Details 3) (USD $) In Thousands, unless otherwise specified							12 Months Ended					12 Months Ended													12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Level 1	Dec. 31, 2011 Level 1	Dec. 31, 2012 Level 2	Dec. 31, 2011 Level 2	Dec. 31, 2012 Total equities	Dec. 31, 2012 Equity mutual funds	Dec. 31, 2011 Equity mutual funds	Dec. 31, 2012 Equity mutual funds Level 1	Dec. 31, 2011 Equity mutual funds Level 1	Dec. 31, 2012 Fixed income payments	Dec. 31, 2012 Money market	Dec. 31, 2011 Money market	Dec. 31, 2012 Money market Level 1	Dec. 31, 2011 Money market Level 1	Dec. 31, 2012 Fixed income mutual funds	Dec. 31, 2011 Fixed income mutual funds	Dec. 31, 2012 Fixed income mutual funds Level 1	Dec. 31, 2011 Fixed income mutual funds Level 1	Dec. 31, 2012 Stable value	Dec. 31, 2011 Stable value	Dec. 31, 2012 Stable value Level 2	Dec. 31, 2011 Stable value Level 2	Dec. 31, 2012 Cash equivalents	Dec. 31, 2012 Pension plans	Dec. 31, 2011 Pension plans	Dec. 31, 2010 Pension plans	Dec. 31, 2012 Postretirement Healthcare Coverage
Target allocation
Plan's target allocation (as a percent)							50.00%					45.00%													5.00%
Fair Value Measurements
Total	$ 22,372	$ 19,609	$ 19,181	$ 16,453	$ 3,191	$ 3,156		$ 11,344	$ 9,858	$ 11,344	$ 9,858		$ 644	$ 384	$ 644	$ 384	$ 7,193	$ 6,211	$ 7,193	$ 6,211	$ 3,191	$ 3,156	$ 3,191	$ 3,156		$ 22,372	$ 19,609	$ 19,328
Allocation Percent	100.00%	10.00%						51.00%	50.00%				3.00%	2.00%			32.00%	32.00%			14.00%	16.00%
Employer contributions
Anticipated pension contributions to the plans in 2013																										1,500
Benefit payments expected to be paid
2013																										1,337			626
2014																										1,349			672
2015																										1,354			709
2016																										1,403			750
2017																										1,445			784
2018-2022																										$ 7,756			$ 4,228