Retirement Plan Benefits (Tables)

12 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Components of Change in Benefit Obligation of Pension Plans

The components of the change in benefit obligation of the Pension Plan is as follows (table in thousands):

	December  31, 2012			December  31, 2011
Benefit obligation, at beginning of year	$	482,609		$	427,213
Interest cost	21,440			22,663
Benefits paid	(16,598		)	(15,493		)
Actuarial loss	51,815			48,226
Benefit obligation, at end of year	$	539,266		$	482,609

Reconciliation of Beginning and Ending Balances of Fair Value of Assets of Pension Plans

The reconciliation of the beginning and ending balances of the fair value of the assets of the Pension Plan is as follows (table in thousands):

	December  31, 2012			December  31, 2011
Fair value of plan assets, at beginning of year	$	395,859		$	379,617
Actual return on plan assets	51,442			31,735
Benefits paid	(16,598		)	(15,493		)
Fair value of plan assets, at end of year	$	430,703		$	395,859

Components of Net Periodic Expense of Pension Plans

The components of net periodic expense (benefit) of the Pension Plan are as follows (table in thousands):

	2012			2011			2010
Interest cost	$	21,440		$	22,663		$	22,685
Expected return on plan assets	(26,000		)	(25,008		)	(23,304		)
Recognized actuarial loss	12,847			11,174			12,616
Net periodic expense (benefit)	$	8,287		$	8,829		$	11,997

Weighted Average Assumptions Used in Pension Plans to Determine Benefit Obligations

The weighted-average assumptions used in the Pension Plan to determine periodic benefit cost for the years ended December 31 are as follows:

	December  31, 2012		December  31, 2011		December  31, 2010
Discount rate	4.6	%	5.4	%	6.0	%
Expected long-term rate of return on plan assets	6.75	%	6.75	%	6.75	%
Rate of compensation increase	N/A		N/A		N/A

The weighted-average assumptions used in the Pension Plan to determine benefit obligations at December 31 are as follows:

	December  31, 2012		December  31, 2011		December  31, 2010
Discount rate	3.7	%	4.6	%	5.4	%
Rate of compensation increase	N/A		N/A		N/A

Weighted Average Assumptions Used in Pension Plans to Determine Periodic Benefit Cost

The benefit payments are expected to be paid in the following years (table in thousands):

2013	$	21,610
2014	22,703
2015	24,005
2016	25,546
2017	27,139
2018-2021	155,275

Pension Plan Assets at Fair Value

The following table sets forth, by level within the fair value hierarchy, the Pension Plan’s assets at fair value as of December 31, 2012 and 2011 (tables in thousands):

	December 31, 2012
	Level 1		Level 2		Level 3		Total
Common collective trusts	$	—	$	308,233	$	—	$	308,233
Mutual funds	—		—		—		—
U.S. treasury securities	2,275		—		—		2,275
Corporate debt securities	—		120,022		—		120,022
Total	$	2,275	$	428,255	$	—	430,530
Plan payables, net of accrued interest and dividends							173
Total							$	430,703
	December 31, 2011
	Level 1		Level 2		Level 3		Total
Common collective trusts	$	—	$	284,250	$	—	$	284,250
Mutual funds	—		2,666		—		2,666
U.S. treasury securities	2,979		—		—		2,979
Corporate debt securities	—		105,082		—		105,082
Total	$	2,979	$	391,998	$	—	394,977
Plan payables, net of accrued interest and dividends							882
Total							$	395,859

Pension Plan Investments at Fair Value Represented 5% or More of Pension Plan Net Assets

Pension Plan investments at fair value as of December 31, 2012 and 2011 which represented 5% or more of the Pension Plan’s net assets were as follows:

	2012		2011
EB Daily Valued Small Cap Stock Index Fund	25,842		23,038
EB Daily Valued Stock Index Fund	85,834		82,060
EB Daily Valued International Stock Index Fund	25,850		21,938
EB Long Term Government Bond Index	45,732		44,058
EB Long Term Credit Bond Index	67,902		60,111
Corporate Debt Securities	124,519		105,082
	$	375,679	$	336,287

Weighted Average Target Asset Allocations

The long-term weighted average target asset allocations are as follows:

	December 31, 2012
U.S. large capitalization equities	17	%
U.S. small capitalization equities	4
International equities	4
U.S. long-duration fixed income	75
High yield fixed income	—
Total	100	%

Actual Allocation of the Assets in the Pension Plans

The actual allocation of the assets in the Pension Plan at December 31, 2012 and 2011were as follows:

	December  31, 2012		December  31, 2011
U.S. large capitalization equities	28	%	29	%
U.S. small capitalization equities	6		6
International equities	8		7
U.S. long-duration fixed income	55		55
High yield fixed income	3		3
Total	100	%	100	%