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Retirement and Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Retirement and Employee Benefit Plans [Abstract]

Changes In The Plans Benefit Obligations


												Other Postretirement
	Pension Benefits											Benefits
				2012					2011				2012							2011
	(in thousands)

Change in benefit obligations:
Benefit obligation at January 1	$		81,738				$		67,933			$	6,793						$	4,955
Service cost			10,942						9,323				1,832							1,354
Interest cost			4,050						3,671				398							252
Participant contributions			–						–				21							19
Actuarial loss			14,981						6,967				2,525							302
Benefits paid			(6,951)						(6,156)				(105)							(89)
Plan amendments			672						–				–							–
Settlements			–						–				–							–
Benefit obligation at December 31	$		105,432				$		81,738			$	11,464						$	6,793

Changes In The Plans Fair Value Of Assets And Funded Status [Text Block]


													Other Postretirement
	Pension Benefits												Benefits
		2012						2011						2012							2011
	(in thousands)

Change in plan assets:
Fair value of plan assets at January 1	$		68,023				$	56,949					$	–						$	–
Actual return/(loss) on plan assets			11,191					4,717						–							–
Employer contributions			11,084					12,513						84							70
Participant contributions			–					–						21							19
Benefits paid			(6,951)					(6,156)						(105)							(89)
Settlements			–					–						–							–
Fair value of plan assets at December 31	$		83,347				$	68,023					$	–						$	–
Funded status of plans at December 31	$		(22,085)				$	(13,715)					$	(11,464)						$	(6,793)

Pension And Other Postretirement Benefit Costs


											Other Postretirement
		Pension Benefits									Benefits
		2012			2011			2010			2012			2011			2010
		(in thousands)

Service cost	$	10,942		$	9,323		$	7,096		$	1,832		$	1,354		$	1,089
Interest cost		4,050			3,671			3,249			398			252			195
Expected return on plan assets		(5,426)			(4,398)			(3,503)			–			–			–
Amortization of transition obligation		–			–			–			64			64			65
Amortization of prior service cost		286			344			346			14			14			14
Amortization of net loss		1,220			856			806			93			11			21
Net periodic benefit cost		11,072			9,796			7,994			2,401			1,695			1,384
Settlements and curtailments		–			–			223			–			–			–
Total benefit cost	$	11,072		$	9,796		$	8,217		$	2,401		$	1,695		$	1,384

Projected Benefit Obligation, Accumulated Benefit Obligation, And Fair Value Of Plan Assets


		2012			2011
		(in thousands)

Projected benefit obligation	$	105,432		$	81,738
Accumulated benefit obligation	$	100,379		$	77,317
Fair value of plan assets	$	83,347		$	68,023

Amounts Recognized In Other Comprehensive Income


			Pension Benefits			Other Postretirement Benefits
			(in thousands)

Net actuarial loss arising during the year		$	(9,215)		$	(2,525)
Amortization of transition obligation			–			64
Amortization of prior service cost			287			14
Amortization of net loss			1,219			93
Plan amendments			(672)			–
Tax effect			3,343			934
		$	(5,038)		$	(1,420)

Weighted Average Assumptions Used In The Measurement Of Benefit Obligations


	Pension Benefits						Other Postretirement Benefits
	2012			2011			2012			2011

Discount rate	4.00	%		5.00	%		4.00	%		5.00	%
Rate of compensation increase	4.50	%		4.50	%		n/a			n/a

Weighted Average Assumptions Used In The Measurement Of Net Periodic Benefit Cost


	Pension Benefits									Other Postretirement Benefits
	2012			2011			2010			2012			2011			2010

Discount rate	5.00	%		5.50	%		5.75	%		5.00	%		5.50	%		5.75	%
Expected return on plan assets	7.50	%		7.50	%		7.50	%		n/a			n/a			n/a
Rate of compensation increase	4.50	%		4.50	%		4.50	%		n/a			n/a			n/a

Measurement Purposes Following Trend Rates Were Assumed


	2012			2011

Health care cost trend assumed for next year	8	%		9	%
Rate to which the cost trend is assumed to decline	5	%		5	%
Year that the rate reaches the ultimate trend rate	2031			2031

One Percentage Point Change In Assumed Health Care Cost Trend Rates


		1% Increase			1% Decrease
	(in thousands)

Effect on the total service and interest cost components	$	340		$	(281)
Effect on postretirement benefit obligations	$	1,639		$	(1,360)

Benefit Payments Which Reflect Expected Future Service


	Pension Benefits			Other Postretirment Benefits
	(in thousands)

2013	$	4,599		$	314
2014	$	6,599		$	418
2015	$	6,573		$	559
2016	$	8,297		$	748
2017	$	9,155		$	855
Years 2018-2022	$	58,870		$	6,681

Plan Assets Allocation To Any Asset Class Falls Outside Of The Specified Range


	Pension Plan Asset Allocations
Asset category:	Target				Actual
Equity securities:
U.S. large cap growth equity	6	%			6	%
U.S. large cap value equity	6	%			6	%
U.S. large cap core equity	15	%			14	%
U.S. small cap equity	3	%			3	%
Non-U.S. equity	25	%			26	%
Emerging markets equity	5	%			5	%
Fixed income and cash and cash equivalents	40	%			40	%
Total	100	%			100	%

Fair Value Measurement Of Pension Plan Assets


Asset category:	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)			Significant Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in thousands)
Equity securities:
U.S. large cap growth equity⁽¹⁾	$	4,588		$	4,588		$	–		$	–
U.S. large cap value equity⁽²⁾		5,257			5,257			–			–
U.S. large cap core equity⁽³⁾		11,564			–			11,564			–
U.S. small cap equity⁽⁴⁾		2,792			2,792			–			–
Non-U.S. equity⁽⁵⁾		21,891			21,891			–			–
Emerging markets equity⁽⁶⁾		4,454			–			4,454			–
Fixed income ⁽⁷⁾		31,021			–			31,021			–
Cash and cash equivalents		1,780			1,780			–			–
Total	$	83,347		$	36,308		$	47,039		$	–

Net Periodic Pension and Other Postretirement Benefit Costs


Asset category:	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)			Significant Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
	(in thousands)
Equity securities:
U.S. large cap growth equity⁽¹⁾	$	3,792		$	3,792		$	–		$	–
U.S. large cap value equity⁽²⁾		3,689			3,689			–			–
U.S. large cap core equity⁽³⁾		10,849			–			10,849			–
U.S. small cap equity⁽⁴⁾		2,201			2,201			–			–
Non-U.S. equity⁽⁵⁾		16,719			16,719			–			–
Emerging markets equity⁽⁶⁾		3,377			–			3,377			–
Fixed income ⁽⁷⁾		25,192			–			25,192			–
Cash and cash equivalents		2,204			2,204			–			–
Total	$	68,023		$	28,605		$	39,418		$	–