Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Operating Activities
Net loss	$ (54,836)		$ (52,053)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation, depletion, accretion and amortization	75,597	[1]	85,167	[1]
Net gain on sale of property, plant & equipment and businesses	(17,141)		(17,862)
Contributions to pension plans	(1,132)		(1,124)
Share-based compensation	4,933		1,877
Deferred tax provision	(39,918)		(30,966)
Changes in assets and liabilities before initial effects of business acquisitions and dispositions	22,349		45,828
Other, net	(2,719)		(1,723)
Net cash provided by (used for) operating activities	(12,867)		29,144
Investing Activities
Purchases of property, plant & equipment	(26,851)		(18,848)
Proceeds from sale of property, plant & equipment	1,623		10,750
Proceeds from sale of businesses, net of transaction costs	18,164		11,827
Payment for businesses acquired, net of acquired cash	(60,212)		0
Other, net	2		31
Net cash provided by (used for) investing activities	(67,274)		3,760
Financing Activities
Payment of current maturities and long-term debt	(10,016)		(90)
Dividends paid	(1,299)		(1,295)
Proceeds from exercise of stock options	3,203		3,483
Other, net	856		331
Net cash provided by (used for) financing activities	(7,256)		2,429
Net increase (decrease) in cash and cash equivalents	(87,397)		35,333
Cash and cash equivalents at beginning of year	275,478		155,839
Cash and cash equivalents at end of period	$ 188,081		$ 191,172

[1] The allocation of indirect depreciation to our operating segments was changed in the fourth quarter of 2012 to better align the presentation with how management views information internally. The 2012 DDA&A amounts presented above have been revised to conform to the 2013 presentation.