Acquisitions (Tables)

9 Months Ended

Sep. 30, 2011

Acquisitions [Abstract]

Purchase Price Of The Fair Value Of The Assets Acquired And Liabilities Assumed

Purchase price	$	291,292
Fair value of assets acquired (liabilities assumed):
Property, plant and equipment	$	249,381
Other current assets	2,877
Goodwill	38,496
Other intangibles	3,898
Environmental liabilities	(375		)
Other current liabilities	(2,985		)
Total	$	291,292

Consolidated Income Statement Information

	Three Months Ended September 30,
	2010						2011
	As Reported		Pro Forma Adjustments		Pro Forma		As Reported
Revenues	$	406,201	$	9,027	$	415,228	$	435,510
Net income	$	56,637	$	4,790	$	61,427	$	110,240

	Nine Months Ended September 30,
	2010						2011
	As Reported		Pro Forma Adjustments		Pro Forma		As Reported
Revenues	$	1,158,956	$	36,483	$	1,195,439	$	1,261,734
Net income	$	223,623	$	15,740	$	239,363	$	303,304