Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components Of Tax Expense (Benefit) On Income From Continuing Operations

years ended December 31
(add 000)	2011			2010			2009
Federal income taxes:
Current	$	15,967		$	10,539		$	15,879
Deferred		4,080			14,779			5,150
Total federal income taxes		20,047			25,318			21,029
State income taxes:
Current		2,827			1,988			3,646
Deferred		(882	)		3,429			1,079
Total state income taxes		1,945			5,417			4,725
Foreign income taxes:
Current		(1,006	)		(260	)		528
Deferred		--			443			(308	)
Total foreign income taxes		(1,006	)		183			220
Total taxes on income	$	20,986		$	30,918		$	25,974

Summary Of Effective Income Tax Rate On Continuing Operations

years ended December 31	2011			2010			2009
Statutory tax rate		35.0	%		35.0	%		35.0	%
Increase (reduction) resulting from:
Effect of statutory depletion		(17.5	)		(12.8	)		(14.1	)
State income taxes		1.3			2.7			2.8
Foreign taxes		3.4			0.6			0.2
Domestic production deduction		(1.6	)		(1.6	)		(0.8	)
Medicare subsidy		0.2			1.8			(0.1	)
Other items		0.1			(1.9	)		0.5
Effective income tax rate		20.9	%		23.8	%		23.5	%

Deferred Tax Assets And Liabilities

December 31	Deferred Assets (Liabilities)
(add 000)	2011			2010
Deferred tax assets related to:
Employee benefits	$	37,903		$	44,517
Inventories		60,462			59,612
Valuation and other reserves		14,882			8,636
Net operating loss carryforwards		10,835			6,970
Gross deferred tax assets		124,082			119,735
Valuation allowance on deferred tax assets		(9,402	)		(7,119	)
Total net deferred tax assets		114,680			112,616
Deferred tax liabilities related to:
Property, plant and equipment		(258,433	)		(235,674	)
Goodwill and other intangibles		(54,782	)		(61,318	)
Other items, net		(1,132	)		(3,940	)
Total deferred tax liabilities		(314,347	)		(300,932	)
Net deferred tax liability	$	(199,667	)	$	(188,316	)

Deferred Tax Assets And (Liabilities) Recognized

December 31
(add 000)	2011			2010
Current deferred income tax benefits	$	80,674		$	83,380
Noncurrent deferred income taxes		(222,064	)		(228,698	)
Net deferred income taxes	$	(141,390	)	$	(145,318	)

Unrecognized Tax Benefits

years ended December 31   (add 000)	2011			2010			2009
Unrecognized tax benefits at beginning of year	$	11,011		$	16,722		$	15,482
Gross increases – tax positions in prior years		1,217			19,619			2,072
Gross decreases – tax positions in prior years		(1,510	)		(3,258	)		(1,694	)
Gross increases – tax positions in current year		6,274			6,462			6,312
Gross decreases – tax positions in current year		(4,625	)		(5,135	)		(5,393	)
Settlements with taxing authorities		(3,079	)		(12,573	)		(57	)
Lapse of statute of limitations		--			(10,826	)		--
Unrecognized tax benefits at end of year	$	9,288		$	11,011		$	16,722