Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net loss	$ (37,875)	$ (51,828)
Other comprehensive loss, net of income tax:
Change in fair value of derivative instruments, net of income tax of $0 and $80, respectively	0	156
Reclassification of gain on settled contracts, net of income taxes of ($1,809) and ($1,511), respectively	(3,512)	(2,934)
Comprehensive loss	(41,387)	(54,606)
Comprehensive income attributable to the noncontrolling interest	889	1,412
Comprehensive loss attributable to GMX shareholders	$ (42,276)	$ (56,018)