Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 32,122	$ 102,493
Restricted cash	4,325	4,325
Short-term investments	6,008	0
Accounts receivable – interest owners	5,952	8,607
Accounts receivable – oil and natural gas revenues, net	4,705	7,082
Derivative instruments	1,929	0
Inventories	326	326
Prepaid expenses and deposits	1,583	2,655
Assets held for sale	410	2,045
Total current assets	57,360	127,533
OIL AND NATURAL GAS PROPERTIES, BASED ON THE FULL COST METHOD
Properties being amortized	1,105,167	1,062,801
Properties not subject to amortization	162,783	147,224
Less accumulated depreciation, depletion, and impairment	(1,003,510)	(871,346)
Oil and Natural Gas Properties, Based on the Full Cost Method, Net	264,440	338,679
PROPERTY AND EQUIPMENT, AT COST, NET	63,159	65,858
DERIVATIVE INSTRUMENTS	1,451	0
OTHER ASSETS	8,382	10,131
TOTAL ASSETS	394,792	542,201
CURRENT LIABILITIES:
Accounts payable	11,582	13,550
Accrued expenses	15,911	17,835
Accrued interest	4,956	3,256
Revenue distributions payable	5,609	5,980
Short-term derivative instruments	1,141	0
Current maturities of long-term debt	51,256	26
Total current liabilities	90,455	40,647
LONG-TERM DEBT, LESS CURRENT MATURITIES	362,987	426,805
DEFERRED PREMIUMS ON DERIVATIVE INSTRUMENTS	608	0
OTHER LIABILITIES	8,415	7,476
Preferred stock, par value $.001 per share, 10,000,000 shares authorized:
Common stock, par value $.001 per share – 250,000,000 shares authorized, 74,451,790 shares issued and outstanding as of June 30, 2012 and 63,085,432 shares issued and outstanding as of December 31, 2011	74	63
Additional paid-in capital	709,829	690,986
Accumulated deficit	(796,073)	(649,341)
Accumulated other comprehensive income, net of taxes	7,764	14,029
Total GMX Resources’ equity	(78,403)	55,740
Noncontrolling interest	10,730	11,533
Total equity	(67,673)	67,273
TOTAL LIABILITIES AND EQUITY	394,792	542,201
Series A Junior Participating Preferred Stock
Preferred stock, par value $.001 per share, 10,000,000 shares authorized:
Preferred stock	0	0
9.25% Series B Cumulative Preferred Stock
Preferred stock, par value $.001 per share, 10,000,000 shares authorized:
Preferred stock	$ 3	$ 3