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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Current assets    
Cash and cash equivalents $ 150,998 $ 121,231
Restricted cash - collateral 0 50,000
Restricted cash - other 2,841 2,840
Accounts receivable, net 56,711 74,097
Derivative contracts 1,212 0
Prepaid expenses 3,684 5,375
Other current assets 11,952 3,633
Total current assets 227,398 257,176
Oil and natural gas properties, using full cost method of accounting    
Proved 882,946 840,201
Unproved 110,941 74,937
Less: accumulated depreciation, depletion and impairment (377,280) (353,030)
Net oil and natural gas properties capitalized costs 616,607 562,108
Other property, plant and equipment, net 245,818 255,824
Derivative contracts 5,441 0
Other assets 1,933 6,284
Total assets 1,097,197 1,081,392
Current liabilities    
Accounts payable and accrued expenses 105,939 116,517
Derivative contracts 1,545 27,538
Asset retirement obligations 67,015 66,154
Other current liabilities 7,167 3,497
Total current liabilities 181,666 213,706
Long-term debt 37,516 305,308
Derivative contracts 0 2,176
Asset retirement obligations 41,364 40,327
Other long-term obligations 1,742 6,958
Total liabilities 262,288 568,475
Commitments and contingencies (Note 7)
Stockholders’ Equity    
Common stock, $0.001 par value; 250,000 shares authorized; 35,855 issued and outstanding at March 31, 2017 and 21,042 issued and 19,635 outstanding at December 31, 2016 34 20
Warrants 88,381 88,381
Additional paid-in capital 1,029,668 758,498
Accumulated deficit (283,174) (333,982)
Total stockholders’ equity 834,909 512,917
Total liabilities and stockholders’ equity $ 1,097,197 $ 1,081,392