Employee Benefit Plans (Notes)

6 Months Ended

Jun. 30, 2013

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Employee Benefit Plans [Text Block]

15. EMPLOYEE BENEFIT PLANS

The Company has four qualified non-contributory defined benefit pension plans covering a significant majority of its employees and an unfunded plan that provides benefits in excess of amounts allowable under current tax law in the qualified plans. Currently, all qualified plans are closed to new participants. Employee benefit plan liabilities are calculated using actuarial estimates and management assumptions. These estimates are based on historical information, along with certain assumptions about future events. Changes in assumptions, as well as changes in actual experience, could cause the estimates to change.

The net pension and postretirement benefit costs that have been recognized during the stated periods are shown in the following tables:

	Pension						Postretirement
	Three Months Ended June 30,						Three Months Ended June 30,
	2013			2012			2013		2012
Components of Net Periodic Benefit Cost
Service cost	$	2,011		$	2,102		$	249	$	227
Interest cost	3,953			4,321			240		242
Expected return on plan assets	(5,966		)	(6,369		)	—		—
Amortization of prior service cost	322			327			6		6
Amortization of losses	4,791			4,394			218		156
Net periodic benefit cost	$	5,111		$	4,775		$	713	$	631

	Pension						Postretirement
	Six Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013		2012
Components of Net Periodic Benefit Cost
Service cost	$	4,430		$	4,042		$	498	$	437
Interest cost	8,787			8,309			480		465
Expected return on plan assets	(13,390		)	(12,248		)	—		—
Amortization of prior service cost	710			629			13		12
Amortization of losses	10,516			8,451			436		299
Net periodic benefit cost	$	11,053		$	9,183		$	1,427	$	1,213

In 2013, the Company has no mandatory pension contribution requirements, but may make discretionary contributions.