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Consolidated Balance Sheets - Successor - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Current assets    
Cash and cash equivalents $ 99,143 $ 121,231
Restricted cash - collateral 0 50,000
Restricted cash - other 2,165 2,840
Accounts receivable, net 71,277 74,097
Derivative contracts 1,310 0
Prepaid expenses 5,248 5,375
Other current assets 15,954 3,633
Total current assets 195,097 257,176
Oil and natural gas properties, using full cost method of accounting    
Proved (includes development and project costs excluded from amortization of $16.7 million at December 31, 2016) 1,056,806 840,201
Unproved 100,884 74,937
Less: accumulated depreciation, depletion and impairment (460,431) (353,030)
Net oil and natural gas properties capitalized costs 697,259 562,108
Other property, plant and equipment, net 225,981 255,824
Other assets 1,290 6,284
Total assets 1,119,627 1,081,392
Current liabilities    
Accounts payable and accrued expenses 139,155 116,517
Derivative contracts 10,627 27,538
Asset retirement obligations 41,017 66,154
Other current liabilities 8,115 3,497
Total current liabilities 198,914 213,706
Long-term debt 37,502 305,308
Derivative contracts 3,568 2,176
Asset retirement obligations 36,527 40,327
Other long-term obligations 3,176 6,958
Total liabilities 279,687 568,475
Commitments and contingencies (Note 15)
Stockholders’ Equity    
Common stock 36 20
Warrants 88,500 88,381
Additional paid-in capital 1,038,324 758,498
Accumulated deficit (286,920) (333,982)
Total stockholders’ equity 839,940 512,917
Total liabilities and stockholders’ equity $ 1,119,627 $ 1,081,392