Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Cash and cash equivalents	$ 3,228	$ 2,357
Accounts receivable – interest owners	4,762	5,339
Accounts receivable – oil and natural gas revenues, net	6,276	6,829
Derivative instruments	21,648	19,486
Inventories	326	326
Prepaid expenses and deposits	5,365	5,767
Assets held for sale	6,275	26,618
Total current assets	47,880	66,722
OIL AND NATURAL GAS PROPERTIES, BASED ON THE FULL COST METHOD
Properties being amortized	1,070,091	938,701
Properties not subject to amortization	158,448	39,694
Less accumulated depreciation, depletion, and impairment	(786,700)	(630,632)
Oil and Gas Property, Full Cost Method, Net	441,839	347,763
PROPERTY AND EQUIPMENT, AT COST, NET	66,627	69,037
DERIVATIVE INSTRUMENTS	6,185	17,484
OTHER ASSETS	13,451	6,084
TOTAL ASSETS	575,982	507,090
CURRENT LIABILITIES:
Accounts payable	15,764	24,919
Accrued expenses	22,483	33,048
Accrued interest	5,221	3,317
Revenue distributions payable	6,931	4,839
Current maturities of long-term debt	26	26
Total current liabilities	50,425	66,149
LONG-TERM DEBT, LESS CURRENT MATURITIES	372,793	284,943
DEFERRED PREMIUMS ON DERIVATIVE INSTRUMENTS	1,883	10,622
OTHER LIABILITIES	7,557	7,157
Preferred stock, par value $.001 per share, 10,000,000 shares authorized:
Common stock, par value $.001 per share-100,000,000 shares authorized, 59,208,178 sharessued and outstanding as of September 30, 2011 and 31,283,353 shares issued and outstanding as of December 31, 2010	59	31
Additional paid-in capital	685,055	531,944
Accumulated deficit	(569,546)	(430,784)
Accumulated other comprehensive income, net of taxes	14,294	15,227
Total GMX Resources’ equity	129,865	116,420
Noncontrolling interest	13,459	21,799
Total equity	143,324	138,219
TOTAL LIABILITIES AND EQUITY	575,982	507,090
Junior Participating Preferred Class A [Member]
Preferred stock, par value $.001 per share, 10,000,000 shares authorized:
Preferred stock, par value $.0001 per share	0	0
Series B Cumulative Preferred Stock [Member]
Preferred stock, par value $.001 per share, 10,000,000 shares authorized:
Preferred stock, par value $.0001 per share	$ 3	$ 2