CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 0
Accounts receivable, net of allowance of $568,429 and $525,556, respectively	12,215,741	11,726,078
Prepaid expenses	811,937	844,495
Derivative instruments	23,203	1,892,744
Deferred tax asset, net	10,854,534	10,361,157
Total current assets	23,905,415	24,824,474
PROPERTY AND EQUIPMENT
Oil and gas properties (successful efforts method of accounting)	750,422,487	740,070,145
Other property and equipment	3,036,873	3,061,635
Accumulated depreciation, depletion and amortization	(454,996,621)	(442,304,300)
Total property and equipment, net	298,462,739	300,827,480
NONCURRENT ASSETS
Deposits	34,743	34,743
Debt issuance cost	960,325	1,056,272
Derivative instruments	211,210	67,261
Deferred tax asset, net	43,801,070	41,810,159
Total noncurrent assets	45,007,348	42,968,435
TOTAL ASSETS	367,375,502	368,620,389
CURRENT LIABILITIES
Accounts payable	31,939,209	31,127,671
Accrued liabilities	9,616,158	6,680,843
Asset retirement obligations	738,428	876,774
Derivative instruments	136,373
Total current liabilities	42,430,168	38,685,288
NONCURRENT LIABILITIES
Long-term debt	238,589,148	239,368,865
Asset retirement obligations	10,236,482	10,152,432
Derivative instruments	21,026
Other noncurrent liabilities	559,349	571,687
Total noncurrent liabilities	249,406,005	250,092,984
Total liabilities	291,836,173	288,778,272
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Common stock (par value $0.001; 200,000,000 shares authorized; 46,874,484 and 46,259,009 shares issued and 46,606,703 and 46,063,822 shares outstanding as of March 31, 2013 and December 31, 2012, respectively)	46,874	46,259
Additional paid-in capital	246,669,871	246,007,941
Retained deficit	(170,074,924)	(165,343,525)
Treasury stock (at cost, 267,781 and 195,187 shares as of March 31, 2013 and December 31, 2012, respectively)	(1,102,492)	(868,558)
Total stockholders' equity	75,539,329	79,842,117
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 367,375,502	$ 368,620,389