Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Schedule Of Income Tax Expense

(Dollars in thousands)	Years ended December 31,
	2011			2010			2009
Current provision (benefit)
Federal	$	3,804		$	(52,792	)	$	7,849
State and local		4,156			179			624
Foreign		2,228			1,589			2,237
		10,188			(51,024	)		10,710
Deferred provision (benefit)
Federal		85,106			63,509			5,541
Federal net operating loss		(40,057	)		--			--
State and local		4,544			2,533			(262	)
Foreign		(152	)		(2,446	)		1,489
		49,441			63,596			6,768
	$	59,629		$	12,572		$	17,478

Schedule Of Income (Loss) Before Income Taxes

(Dollars in thousands)	Years ended December 31,
	2011		2010			2009
U.S. sources	$	139,978	$	30,706		$	(94,089	)
Non-U.S. sources		8,094		(14,149	)		3,820
	$	148,072	$	16,557		$	(90,269	)

Schedule Of Income Taxes Calculated On Income Before Income Taxes And Provision For Income Taxes

(Dollars in thousands)	Years ended December 31,
	2011			2010			2009
Federal statutory tax rate of 35%	$	51,825		$	5,795		$	(31,594	)
State income tax, net of federal
income tax benefit		7,458			2,607			(676	)
Foreign taxes in excess of (less than) U.S. statutory rate		(757	)		(1,606	)		2,388
Non-deductible operating expenses and
tax-exempt income		113			878			2,231
Creditable foreign tax,  net of
foreign tax credits		925			631			246
Non-deductible goodwill impairment,
write-down of an acquisition-related
receivable and purchase-price adjustment		(2,351	)		5,745			47,185
Fuel tax credit		(3,632	)		(4,054	)		(3,123	)
IRS audit settlement		5,888			--			--
Other, net		160			2,576			821
Income tax provision	$	59,629		$	12,572		$	17,478

Schedule Of Deferred Tax Assets And Liabilities

(Dollars in thousands)	December 31,
	2011			2010
Deferred tax assets
Employee benefits	$	248,481		$	163,119
Self-insurance accruals		37,426			42,950
Capital-loss carryforwards		695			92
Operating-loss carryforwards		57,635			15,636
Tax-credit carryforwards		6,877			6,259
Share-based compensation		13,724			12,650
Other		14,350			14,161
Valuation allowance		(17,515	)		(12,749	)
		361,673			242,118
Deferred tax liabilities
Property, plant and equipment		313,041			245,083
Prepaid expenses		25,056			23,814
Revenue		6,939			7,562
Other		8,269			5,658
		353,305			282,117
Net deferred tax asset (liability)	$	8,368		$	(39,999	)

Schedule Of Unrecognized Tax Benefits

(Dollars in thousands)
Balance at December 31, 2009	$	14,818
Gross increases – prior-period tax positions		140
Gross decreases – prior-period tax positions		(1,684	)
Gross increases – current-period tax positions		358
Settlements		(2,234	)
Lapse of statute of limitations		(1,595	)
Balance at December 31, 2010		9,803
Gross increases – prior-period tax positions		2,770
Gross increases – current-period tax positions		1,014
Settlements		(1,758	)
Lapse of statute of limitations		(1,152	)
Balance at December 31, 2011	$	10,677