Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Segment Information [Abstract]

Schedule Of Operating Segment Results

				Other	Corporate,
				Operating	Other and
	PRB	APP	WBIT	Segments	Eliminations	Consolidated
Three months ended March 31, 2012
Revenues	$      401,177	$   469,058	$     144,559	$    24,857	$        -	$        1,039,651
Income (loss) from operations	32,543	15,835	31,241	(3,750)	(21,788)	54,081
Total assets	2,263,517	4,640,344	752,197	940,245	1,568,815	10,165,118
Depreciation, depletion and amortization	41,223	76,017	18,600	3,687	439	139,966
Amortization of acquired sales contracts, net	(816)	(13,088)	-	(113)	-	(14,017)
Capital expenditures	3,986	66,303	15,137	5,644	2,201	93,271
Three months ended March 31, 2011
Revenues	$ 393,113	$ 155,439	$ 324,386	-	$ -	$ 872,938
Income from operations	46,874	26,892	54,394	-	(25,922)	102,238
Total assets	2,244,173	683,949	710,324	-	1,261,532	4,899,978
Depreciation, depletion and amortization	41,691	20,529	21,016	-	301	83,537
Amortization of acquired sales contracts, net	5,944	-	-	-	-	5,944
Capital expenditures	2,838	11,777	17,302	-	6,794	38,711

Reconciliation Statement Of Segment Income From Operations To Consolidated Income Before Income Taxes

	Three Months Ended March 31
	2012	2011
Income from operations	$       54,081	$     102,238
Interest expense	(74,772)	(34,580)
Interest income	1,021	746
Income before income taxes	$      (19,670)	$      68,404