Segment Information

12 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Segment Information

Note 14 — Segment Information

The Company's operations are focused in the Gulf of Mexico and in the North Sea. Management reviews and evaluates separately the operations of its Gulf of Mexico segment and its North Sea segment. The operations of both segments include natural gas and liquid hydrocarbon production and sales. The accounting policies of the reportable segments are the same as those described in Note 2 to the Consolidated Financial Statements. Segment activity for the years ended December 31, is as follows (in thousands):

	Gulf of Mexico			North Sea			Total
2011
Revenues	$	668,184		$	19,024		$	687,208
Depreciation, depletion and amortization		285,966			12,608			298,574
Impairment of oil and gas properties		56,401			1,238			57,639
Gain on disposal of properties		27,000			—			27,000
Drilling interruption costs		19,691			—			19,691
Income (loss) from operations		159,317			(6,625	)		152,692
Interest income		223			—			223
Interest expense, net		326,411			—			326,411
Derivative income		23,373			1,818			25,191
Gain on debt extinguishment		1,095			—			1,095
Income tax expense		—			(18,068	)		(18,068	)
Additions to oil and gas properties		332,873			211,042			543,915
Total assets		2,830,027			558,747			3,388,774
2010
Revenues	$	416,836		$	21,161		$	437,997
Depreciation, depletion and amortization		200,457			20,200			220,657
Impairment of oil and gas properties		48,392			14,875			63,267
Gain on exchange/disposal of properties		26,720			—			26,720
Drilling interruption costs		23,647			—			23,647
Loss from operations		16,071			23,105			39,176
Interest income		243			453			696
Interest expense, net		222,104			—			222,104
Derivative expense		(16,253	)		(6,166	)		(22,419	)
Loss on debt extinguishment		(75,316	)		—			(75,316	)
Income tax benefit		24,023			12,250			36,273
Additions to oil and gas properties		570,393			139,890			710,283
Total assets		2,896,486			393,616			3,290,102

	Gulf of Mexico			North Sea			Total
2009
Revenues	$	295,124		$	17,030		$	312,154
Depreciation, depletion and amortization		128,777			24,003			152,780
Impairment of oil and gas properties		45,799			—			45,799
Gain (loss) on disposal of properties		13,177			(744	)		12,433
Income (loss) from operations		3,825			(21,054	)		(17,229	)
Interest income		537			173			710
Interest expense, net		40,884			—			40,884
Derivative income (expense)		(9,834	)		9,122			(712	)
Income tax benefit		18,885			3,649			22,534
Additions to oil and gas properties		721,793			96,386			818,179
Total assets		2,545,876			257,271			2,803,147