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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
ASSETS    
Cash and Cash Equivalents $ 65,904 $ 134,006
Accounts Receivable:    
Oil and gas sales 19,339 15,241
Joint interest operations 3,105 3,552
Derivative Financial Instruments   1,446
Other Current Assets 1,824 1,993
Total current assets 90,172 156,238
Property and Equipment:    
Unevaluated oil and gas properties   84,144
Oil and gas properties, successful efforts method 3,797,101 4,332,222
Other 19,590 19,521
Accumulated depreciation, depletion and amortization (3,018,029) (3,397,467)
Net property and equipment 798,662 1,038,420
Other Assets 1,040 1,192
Total Assets 889,874 1,195,850
LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT)    
Accounts Payable 45,311 57,276
Derivative Financial Instruments 6,030  
Accrued Expenses 40,366 38,444
Total current liabilities 91,707 95,720
Long-term Debt 1,044,506 1,249,330
Deferred Income Taxes Payable 9,126 1,965
Reserve for Future Abandonment Costs 15,804 20,093
Total liabilities 1,161,143 1,367,108
Commitments and Contingencies
Stockholders' Equity (Deficit):    
Common stock—$0.50 par, 75,000,000 shares authorized, 9,544,035 and 13,937,627 shares issued and outstanding at December 31, 2015 and 2016, respectively 6,969 4,772
Common stock warrants 5,672  
Additional paid-in capital 531,924 504,670
Accumulated deficit (815,834) (680,700)
Total stockholders' deficit (271,269) (171,258)
Total liabilities and stockholders' deficit $ 889,874 $ 1,195,850