CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Cash and Cash Equivalents	$ 61,255	$ 65,904
Accounts Receivable:
Oil and gas sales	26,700	19,339
Joint interest operations	11,872	3,105
Derivative Financial Instruments	1,318
Assets Held for Sale	198,615
Other Current Assets	2,745	1,824
Total current assets	302,505	90,172
Property and Equipment:
Oil and gas properties, successful efforts method	2,631,750	3,797,101
Other	18,918	19,590
Accumulated depreciation, depletion and amortization	(2,042,739)	(3,018,029)
Net property and equipment	607,929	798,662
Income Taxes Receivable	19,086
Other Assets	899	1,040
Total Assets	930,419	889,874
LIABILITIES AND STOCKHOLDERS' DEFICIT
Accounts Payable	126,034	45,311
Derivative Financial Instruments		6,030
Accrued Expenses	42,455	40,366
Total current liabilities	168,489	91,707
Long-term Debt	1,110,529	1,044,506
Deferred Income Taxes	10,266	9,126
Reserve for Future Abandonment Costs	10,407	15,804
Total liabilities	1,299,691	1,161,143
Commitments and Contingencies
Stockholders' Deficit:
Common stock—$0.50 par, 75,000,000 shares authorized, 13,937,627 and 15,427,561 shares issued and outstanding at December 31, 2016 and 2017, respectively	7,714	6,969
Common stock warrants	3,557	5,672
Additional paid-in capital	546,696	531,924
Accumulated deficit	(927,239)	(815,834)
Total stockholders' deficit	(369,272)	(271,269)
Total liabilities and stockholders' deficit	$ 930,419	$ 889,874