Pension And Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2011

Pension And Postretirement Benefits

Estimated Components Of The Recorded Net Periodic Benefit Cost For Pension And Postretirement Benefits

	Three Months Ended June 30,
	Pension						Postretirement Benefits
	2011			2010			2011			2010
Service cost	$	2,437		$	2,557		$	34		$	119
Interest cost		5,027			5,327			214			599
Expected return on assets		(5,298	)		(4,867	)		—			—
Amortization of:
Prior service cost (credit)		116			135			(167	)		(324	)
Actuarial loss (gain)		1,368			2,365			(8	)		—
Settlement charge (adjustment)		—			(16	)		—			—
Total net periodic benefit cost	$	3,650		$	5,501		$	73		$	394

	Six Months Ended June 30,
	Pension						Postretirement Benefits
	2011			2010			2011			2010
Service cost	$	5,630		$	5,522		$	175		$	274
Interest cost		11,617			11,506			1,113			1,375
Expected return on assets		(12,243	)		(10,511	)		—			—
Amortization of:
Prior service cost (credit)		267			291			(871	)		(744	)
Actuarial loss (gain)		3,162			5,108			(43	)		—
Settlement charge		14			83			—			—
Total net periodic benefit cost	$	8,447		$	11,999		$	374		$	905