Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2011

Retirement Plans [Abstract]

Change in Benefit Obligation

		Pension		Postretirement		Pension		Postretirement
		Plan		Plan		Plan		Plan
		2011		2011		2010		2010
		($ in Thousands)
Change in Fair Value of Plan Assets
Fair value of plan assets at beginning of year		$	159,791	$	-	$	133,554	$	-
Actual return on plan assets			(2,481)		-		14,477		-
Employer contributions			26,000		502		20,000		610
Gross benefits paid			(9,888)		(502)		(8,240)		(610)
	Fair value of plan assets at end of year	$	173,422	$	-	$	159,791	$	-
Change in Benefit Obligation
Net benefit obligation at beginning of year		$	129,114	$	4,150	$	119,935	$	4,429
Service cost			9,898		-		9,622		-
Interest cost			6,414		198		6,377		227
Actuarial loss			1,308		123		1,420		104
Gross benefits paid			(9,888)		(502)		(8,240)		(610)
	Net benefit obligation at end of year	$	136,846	$	3,969	$	129,114	$	4,150
Funded (unfunded) status		$	36,576	$	(3,969)	$	30,677	$	(4,150)
Noncurrent assets		$	39,802	$	-	$	31,274	$	-
Current liabilities			-		(495)		-		(587)
Noncurrent liabilities			(3,226)		(3,474)		(597)		(3,563)
Asset (Liability) Recognized in the Consolidated Balance Sheets		$	36,576	$	(3,969)	$	30,677	$	(4,150)

AOCI Components

Amounts recognized in accumulated other comprehensive income (loss), net of tax, as of December 31, 2011 and 2010 follow.
		Pension		Postretirement		Pension		Postretirement
		Plan		Plan		Plan		Plan
		2011		2011		2010		2010
		($ in Thousands)
Prior service cost		$	274	$	103	$	320	$	347
Net actuarial (gain) loss			32,932		(135)		24,050		(212)
Amount not yet recognized in net periodic benefit cost, but
	recognized in accumulated other comprehensive income	$	33,206	$	(32)	$	24,370	$	135

Changes in OCI

Other changes in plan assets and benefit obligations recognized in other comprehensive income (“OCI”), net of tax, in 2011 and 2010 were as follows.
		Pension Plan		Postretirement Plan		Pension Plan		Postretirement Plan
		2011		2011		2010		2010
		($ in Thousands)
Net gain (loss)		$	(16,711)	$	(123)	$	777	$	(104)
Amortization of prior service cost			72		395		72		395
Amortization of actuarial gain (loss)			2,024		-		1,601		(3)
Income tax (expense) benefit			5,780		(106)		(995)		(111)
	Total Recognized in OCI	$	(8,835)	$	166	$	1,455	$	177

Net period benefit cost for the pension and postretirement plans

The components of net periodic benefit cost for the Pension and Postretirement Plans for 2011, 2010, and 2009 were as follows.
		Pension		Postretirement		Pension		Postretirement		Pension		Postretirement
		Plan		Plan		Plan		Plan		Plan		Plan
		2011		2011		2010		2010		2009		2009
						($ in Thousands)
Service cost		$	9,898	$	-	$	9,622	$	-	$	8,649	$	-
Interest cost			6,414		198		6,377		227		6,262		261
Expected return on plan assets			(12,896)		-		(12,152)		-		(11,520)		-
Amortization of:
	Prior service cost		72		395		72		395		72		395
	Actuarial (gain) loss		2,024		-		1,601		(3)		551		(54)
Total net periodic benefit cost		$	5,512	$	593	$	5,520	$	619	$	4,014	$	602

Weighted Average Benefit Assumptions

		Pension Plan		Postretirement Plan		Pension Plan		Postretirement Plan
		2011		2011		2010		2010
Weighted average assumptions used to determine
	benefit obligations:
Discount rate		4.90	%	4.90	%	5.10	%	5.10	%
Rate of increase in compensation levels		5.00		N/A		5.00		N/A
Weighted average assumptions used to determine net
	periodic benefit costs:
Discount rate		5.10	%	5.10	%	5.50	%	5.50	%
Rate of increase in compensation levels		5.00		N/A		5.00		N/A
Expected long-term rate of return on plan assets		7.75		N/A		8.00		N/A

Plan Asset Allocation Percentages

Asset Category		2011		2010
Equity securities		65	%	64	%
Debt securities		34		35
Other		1		1
	Total	100	%	100	%

Pension Plan Investments

				Fair Value Measurements Using
		December 31, 2011		Level 1		Level 2		Level 3
		($ in Thousands)
Pension Plan Investments:
Money market account		$	1,690	$	1,690	$	-	$	-
Mutual funds			92,026		92,026		-		-
Common /collective trust funds			79,706		-		79,706		-
	Total Pension Plan Investments	$	173,422	$	93,716	$	79,706	$	-
				Fair Value Measurements Using
		December 31, 2010		Level 1		Level 2		Level 3
		($ in Thousands)
Pension Plan Investments:
Money market account		$	861	$	861	$	-	$	-
Mutual funds			78,046		78,046		-		-
Common /collective trust funds			80,884		-		80,884		-
	Total Pension Plan Investments	$	159,791	$	78,907	$	80,884	$	-

Expected Benefit Payments

	Pension Plan		Postretirement Plan
	($ in Thousands)
Estimated future benefit payments:
2012	$	13,604	$	495
2013		10,361		458
2014		10,483		393
2015		11,892		355
2016		12,044		308
2017-2021	$	64,502	$	1,282

One Percentage Point Change in Assumed Health Care Cost

	2011				2010
	100 bp Increase		100 bp Decrease		100 bp Increase		100 bp Decrease
	($ in Thousands)
Effect on total of service and interest cost	$	15	$	(13)	$	17	$	(16)
Effect on postretirement benefit obligation	$	305	$	(266)	$	343	$	(317)