Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Operations

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Condensed Consolidated Statements of Operations - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Income Statement [Abstract]        
Revenues $ 123,323 $ 99,655 $ 247,716 $ 177,370
Operating costs and expenses:        
Lease operating expenses 31,519 36,622 71,683 81,091
Production taxes 449 370 964 896
Gathering and transportation 5,318 6,398 11,527 11,490
Depreciation, depletion, amortization and accretion 40,364 57,493 80,354 121,226
Ceiling test write-down of oil and natural gas properties   104,592   221,151
General and administrative expenses 16,474 16,235 29,748 32,678
Derivative (gain) loss (3,689) 4,942 (7,644) 2,449
Total costs and expenses 90,435 226,652 186,632 470,981
Operating income (loss) 32,888 (126,997) 61,084 (293,611)
Interest expense:        
Incurred 11,436 29,773 22,730 57,587
Capitalized   (102)   (445)
Gain on exchange of debt 8,056   7,811  
Other (income) expense, net 5,168 (24) 5,114 1,282
Income (loss) before income tax benefit 24,340 (156,644) 41,051 (352,035)
Income tax benefit (8,975) (35,722) (16,563) (40,604)
Net income (loss) $ 33,315 $ (120,922) $ 57,614 $ (311,431)
Basic and diluted earnings (loss) per common share $ 0.23 $ (1.58) $ 0.40 $ (4.07)